Bases for printing with coating providing improved printing quality and resolution capability at reduced consumption of ink

FIELD: textiles, paper.

SUBSTANCE: invention relates to the pulp and paper industry and relates to the bases for printing with coating that provides improved printing quality and resolution capability at reduced consumption of ink. The product in the form of a paper substrate has on at least one of the first and second surfaces coating swelling under the influence of water, which thickness is less than 10 mcm. The base coating comprises some amount of pigment of coating, which is sufficient to impart at least one surface of the Parker surface evenness of about 4 and is dispersed in a binder matrix for the pigment of coating swelling under the influence of water, in a weight ratio of the coating pigment to the binder matrix of at least 2:1. The pigment of coating comprises larger porous coating pigment particles and smaller coating pigment particles in a weight ratio of at least 0.2:1. Coating of the base provides the porous surface receptive to ink.

EFFECT: invention provides enhanced printing quality and image resolution capability on paper base with coating on an inkjet printer at a reduced level of use of the ink.

57 cl, 4 dwg, 6 tbl, 3 ex

 

The technical FIELD

[1)001] the Present invention refers broadly to the basics for printing, including paper base having a coating on one or both surfaces of the paper base to improve print quality, good printing resolution, fast drying, etc. at low levels of use of ink for an inkjet printer. In addition, the present invention refers broadly to a method of making such paper basics with coating, and method of printing an image on a paper base coated with an inkjet printer at reduced ink usage.

PREREQUISITES FOR CREATING INVENTIONS

[0002] In traditional manufacturing calendered paper used for printing, non-woven fabric can be produced from aqueous mixtures of solids, which may include wood pulp and/or synthetic fibers together with various additives such as sizing agents, binders, fillers, pigments, etc. Sizing agents are used mainly to prevent excessive penetration, spreading paint, resistance to contamination of water or ink, and particularly to internal absorption of water or ink received by the base paper. Such sizing agents may include agents to "internal sizing", the hen sizing agent (for example, dimer of alkylbetaine, alkenyl-succinic anhydride, and so on) include, add, etc., in the paper manufacturing process to form fibrous paper backing, as well as substances for "gluing surface (for example, starch, copolymers of styrene and maleic anhydride, styrene acrylates, and so on), when the sizing agent is applied or add etc. to the surface of the molded fibrous paper backing. Glued the base paper may have improved properties in the sense of, for example, the print density, because more paint or pigment present in the ink remains on the surface of the paper base paper, and is not absorbed into the paper base.

[0003] In recent years, the use of methods of inkjet printing is growing rapidly. Inkjet printing is a method of forming an ink image on a paper basis of the deposited droplets of ink comprising dyes or pigments. This printing method enables high-speed full-color printing. For ink jet printing droplets of ink are sprayed or ejected jet print nozzles at high speed, to direct these ink droplets in the direction of the paper base and besiege them on her to obtain printed images.

[0004] the Ink used in inkjet printing may contain dyes or pigments in the quality of the ve printing substances. In the case of the ink containing pigments, the ink may also be in the form of an emulsion of pigment. The use of emulsions of the pigments in the ink increases the drying time of the ink drops deposited on the surface of the paper base, and thus can lead to bleeding deposited droplets of ink. The drying time of the ink can be increased, in particular, when the ink droplets deposited on the surface of the paper base, which is treated with an agent for the internal sizing or surface sizing.

DISCLOSURE

[0005] According to a first broad aspect of the present invention, the proposed product, including:

base paper having a first surface and a second surface, and the paper base has a value of HST approximately 50 seconds; and

swell under the influence of water covering the basics at least one of the first and second surfaces, which has a thickness of less than approximately 10 microns and provides receptive to ink a porous surface, and covering the basics includes:

the binder matrix of the pigment coating, swelling under the influence of water, and the binder matrix comprises a water-soluble polymeric binder and a polymeric latex binder in a mass ratio of at least about 1:1, which were made; and

a certain amount of pigment aircraft is Oia, sufficient to impart the values of the smoothness of the surface by Parker at least about 4, at least one of the first and second surfaces, which is dispersed in a binder matrix in the mass ratio of the pigment coating binder matrix is at least about 2:1, and the pigment coating includes:

larger porous particles of the pigment coating having a particle size of more than approximately 1 μm and an effective pore volume of at least about 0.1 cm3/g; and

smaller particles of the pigment coating having a particle size of approximately 1 μm or less;

with larger porous particles of the pigment coating are in a mass ratio to the smaller pigment particles coating of at least about 0.2:1.

[0006] According to a second broad aspect of the present invention, a method is proposed, comprising the following steps:

(a) providing a paper substrate having a first surface and a second surface, and the paper base has a value of HST approximately 50 seconds; and

(b) processing at least one of the first and second surfaces swell under the influence of water covering the basics for getting the basics for printing, and the coverage of the surface has a thickness of less than approximately 10 microns and provides receptive to ink Paris the second surface, and moreover covering the basics includes:

a binder matrix for pigment coating, swelling under the influence of water, and the binder matrix comprises a water-soluble polymeric binder and a polymeric latex binder in a mass ratio of at least about 1:1, which were made; and

a certain amount of pigment coating, sufficient to impart the values of the smoothness of the surface by Parker at least about 4, at least one of the first and second surfaces, and a pigment coating dispersed in a binder matrix in the mass ratio of the pigment coating binder matrix is at least about 2:1, and the pigment coating includes:

larger porous particles of the pigment coating having a particle size of more than approximately 1 μm and an effective pore volume of at least about 0.1 cm3/g; and

smaller particles of the pigment coating having a particle size of approximately 1 μm or less;

with larger porous particles of the pigment coating are in a mass ratio to the smaller pigment particles coating of at least about 0.2:1.

[0007] According to a third broad aspect of the present invention, a method is proposed, comprising the following steps:

(a) providing the basis for print, including:

B. the per base, having a first surface and a second surface, and the paper base has a value of HST approximately 50 seconds; and

swell under the influence of water covering the basics at least one of the first and second surfaces, which has a thickness of less than 10 microns and provides receptive to ink a porous surface, and covering the basics includes:

a binder matrix for pigment coating, swelling under the influence of water, and the binder matrix comprises a water-soluble polymeric binder and a polymeric latex binder in a mass ratio of at least about 1:1, which were sewn; and a certain amount of pigment coating, sufficient to give the value of the smoothness of the surface by Parker at least about 4, at least one of the first and second surfaces, and a pigment coating dispersed in a binder matrix in the mass ratio of the pigment coating binder matrix is at least about 2:1, and the pigment coating includes:

larger porous particles of the pigment coating having a particle size of more than approximately 1 μm and an effective pore volume of at least about 0.1 cm3/g; and

smaller particles of the pigment coating having a particle size of approximately 1 μm or less;

moreover, the larger orestie the pigment particles of the coating are in a mass ratio to the smaller pigment particles coating of at least about 0.2:1; and

(b) printing an image on at least one of the first and second surfaces on an inkjet printer with the ink usage to about 7 g/m2.

BRIEF DESCRIPTION of DRAWINGS

[0008] the Invention will be described in conjunction with the attached drawings, on which:

[0009] FIG.1 is a diagram showing a variant of the method of processing one or both surfaces of the paper base coating composition using a size press with dosing scraper;

[0010] FIG.2 is a diagram showing a variant of the method of processing one or both surfaces of the paper base coating composition using a size press with horizontal fill in the contact zone;

[0011] FIG.3 is a diagram showing a variant of the method of processing one or both surfaces of the paper base coating composition using a size press with vertical fill in the contact zone; and

[0012] FIG.4 - graphs of the values of the print density of the black (OD) against values of laying ink for the four coatings relative to the values for the base paper, comprising a line graph of the values of the underlying securities, and logarithmic graph of the values for one of the coatings.

DETAILED DESCRIPTION

[0013] Before describing the invention will preferably identify some of the substantive terms. It should be understood that the following definitions are used throughout the text of this application.

Definition

[0014] If the definition of terms departs from the commonly accepted meaning of the term the applicant intends to use the definitions provided below, unless specifically stated otherwise.

[0015] For the purposes of the present invention, the terms directions such as"top", "bottom", "side", "front side", "front", "forward", "back", "backward", "back", "rear", "above", "below", "left", "right", "horizontal", "vertical", "up", "down," etc. are used merely for convenience in describing the various embodiments of the present invention. Embodiments of the present invention, shown for example in FIG.1-3, can be oriented in a different manner.

[0016] For the purposes of the present invention, the term "print" refers to any paper-based, which can be printed by the inkjet printing process. The basis for printing may include fabric, stripes and so on, can be in the form of a roll, a separate sheet and so on

[0017] For the purposes of the present invention, the term "paper-based" refers to a fibrous cloth, which can be formed, created, made, etc. of the mixtures, compositions and so on, including paper fibers, agents for the internal sizing of paper and so on, plus any other optional additives for the manufacture of paper, such as, for example, fillers, agents, giving blagorodnost, optical brighteners (or fluorescent bleach), and so on, the Paper base may be in the form of a roll, a separate sheet and so on

[0018] For the purposes of the present invention, the term "filler paper" usually refers to mineral products (for example, calcium carbonate, kaolin clay, and so on), which can be used for making paper, to reduce the cost of materials per unit mass of paper, increase opacity, enhance smoothness, etc., These mineral products can be in the form of fine particles with a size range from about 0.5 to 5 microns.

[0019] For the purposes of the present invention, the term "paper without coating" refers to a paper substrate, which has 0 or entity 0 the surface of the paper coated on one or both sides or surfaces of the paper base.

[0020] For the purposes of the present invention, the term "paper with one-sided coating" refers to a paper substrate which has a surface coating on one, but not on both sides or surfaces of the paper base.

[0021] For the purposes of the present invention, the term "paper base with double-sided coating" refers to a paper substrate which has a surface coating on both sides or surfaces of the paper the OI Foundation.

[0022] For the purposes of the present invention, the term "calendered paper" refers to paper that has been subjected to calendering, for example, to improve the smoothness of the paper for printing and writing and to increase the gloss of the paper surface. For example, calendering may include the process of using pressure to give a smooth yet rough surface paper. Calendering of the paper can be carried out in the calender, which may include the sequence of the shafts at the end of the paper machine (in-line) or separate from the paper machine (outside processing line).

[0023] For the purposes of the present invention, the term "coating" refers to coatings that include at least a binder pigment coating with crosslinked polymer swellable in water, and the pigment coating. These coatings (or composition used for obtaining such coatings may also include other optional additives, such as, for example, drying metal salts, agents for fixing cationic dyes, optical brighteners, fluorescent brighteners, solvents, thinners, agents against scratching and resistance to external damage, antifoaming additives, rheology modifiers, dispersant, surfactants, agents for sizing papers and so on The coating composition can be in the form of aqueous solution, aqueous suspension, colloidal suspension, a liquid, thixotropic mixtures, etc.

[0024] For the purposes of the present invention, the term "on the basis of solids" refers to the mass percentage of each of the respective solid materials (for example, drying the metal salt; calcium carbonate in the pigment; the agent for fixing cationic dye; plastic pigment, agent for the surface sizing of paper, optical brighteners, and so on) present in the coating composition, coating and so on, in the absence of any liquids (e.g. water). Unless otherwise indicated, all information contained in this document percentage for the solid materials are given on the basis of solids.

[0025] For the purposes of the present invention, the term "solids content" refers to the percentage of non-volatile, not liquid components (by weight), which are present in the coating composition, and so on

[0026] For the purposes of the present invention, the term "swellable under the influence of water" refers to the coating, binder and so on, which is able to absorb, absorb, absorb, etc. aqueous liquid, including ink for inkjet printers, but which are not soluble in water, for example, does not substantially dissolve in the presence of aqueous liquids.

[0027] For the purposes of the present invention, the term pigment coating" refers to a material (for example, the substance in the form of fine particles), which can be used or intended to be used for impact absorbing properties of the basis for printing.

[0028] For the purposes of the present invention, the term "larger porous particles of the pigment coating" refers to pigment particles coating with an average size greater than approximately 1 micron in diameter and having an effective pore volume of at least about 0.2 cm3/g, as at least about 0.2 cm3/g (e.g., at least about 0.3 cm3/g). Sources of suitable larger porous particles of the pigment coating can include one or more of: particles of ground calcium carbonate (ICC), such as particles of cationic ground calcium carbonate (ICC), which has a surface area of approximately 43 m2/g and an effective pore volume of at least about 0.2 cm3/g (such as that available under the trademark Omyajet), particles of precipitated calcium carbonate particles of absorbent plastic, clay particles, kaolin particles, particles of calcined clay, talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silicon dioxide, the particles of zeolite and so on

[0029] For the purposes of the present invention, the term "effective pore volume" refers to the internal volume of pores, such as: (a) the void or hollow space is TBA, located beneath the surface of the pigment, (b) pores or depressions on the surface of the pigment and/or (C) cracks or crevices in the surface of the pigment due to the fault of larger particles or combining smaller particles. The effective pore volume can be calculated by the following equation: EIT=(1/P(pigment))-(1/P(solid pigment)), where EIT is the effective pore volume, P(pigment) is the measured or calculated density of the corresponding pigment, and P(solid pigment) is the density of the particulate pigment of the same material, but without the internal pore volume.

[0030] For the purposes of the present invention, the term "smaller pigment particles coating" refers to particles of a pigment coating having an average size of approximately 1 micron or less in diameter. Sources of suitable smaller particles of the pigment coating can include one or more of: particles of microsilica, such as anionic silica fume (e.g., Degussa Aerodisp W7330N), aluminium oxide particles, particles of ground calcium carbonate particles precipitated calcium carbonate, clay particles, kaolin particles, particles of calcined clay, bentonite clay particles, talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silicon dioxide and so on

[0031] For the purposes of the present invention, the term "calcium carbonate" refers to different carbonates cal the Oia, which can be used as coating pigments, such as precipitated calcium carbonate (COC), ground calcium carbonate (ICC), the modified COC and/or the ICC, and so on

[0032] For the purposes of the present invention, the term "precipitated calcium carbonate (COC) refers to calcium carbonate, which can be obtained by the reaction of deposition and which can be used as a pigment coating. The OCC may include almost completely crystalline form of calcite, caso3. The calcite crystal can have several different macroscopic shapes depending on production conditions. Precipitated calcium carbonates can be obtained by carbonization of gaseous carbon dioxide (CO2) aqueous suspension of calcium hydroxide ("milk of lime"). The source material for obtaining the OCC may include limestone, but can also be calcined (i.e., heated to remove CO2to obtain quicklime, CaO. Water can be added to "redeem" lime obtaining lime milk is a suspension of Ca(OH)2which is then subjected to the influence of gas bubbles CO2. Low temperature during the addition of CO2lead to rhombohedral (formless) particles COC. Higher temperature during the addition of CO2produce solenoid-riches is their (rosette-shaped) particles COC. In any case, the end of the reaction occurs at the optimum pH, when milk of lime is effectively converted to CaCO3and before the concentration of CO2will be high enough for oxidation of suspension and re-dissolution of some of its parts. In cases where the JCC is continually not mix or store in a long time, it may be necessary to add more than trace amounts of such anionic dispersant, as polyphosphates. Wet COC may have a weak cationic colloidal charge. On the contrary, dried COC may be like most of millet products CaCO3in the presence of a negative charge, depending on whether you have used dispersers. Calcium carbonate can be precipitated from aqueous solution in three different forms crystals: waterina form, which is thermodynamically unstable, kaltsitnykh form, which is the most stable and most widely occurs in nature, and aragonite form, which is metastable at normal ambient conditions of temperature and pressure, but which can be transformed into calcite at elevated temperatures. Aragonite form is orthorhombic form, which crystallizes as a long thin needle, which can be aggregated or not aggregated. Kaltsitnykh form can exist in a number of the x different forms, of which most often occurs in rhombohedral with crystals that can be aggregated or not aggregated, and scalenohedron form has crystals that are usually not aggregated. Sources of suitable COC may include, for example, the sources described in U.S. patent No. 6666953 (Gein, etc. /Gane et al./), issued December 24, 1999, U.S. patent No. 763807 (Gein and others), issued December 29, 2009, and in European patent application No. 1712595 (Kaesberger /Kaessberger/), published on October 18, 2006, the contents and disclosure of which is incorporated herein in full by reference.

[0033] For the purposes of the present invention, the term "absorbent plastic pigment (also known as "plastic pigment in the form of hollow spheres") refers to the pigment coating comprising a polymeric outer shell that covers or encapsulates an inner emptiness, a space, cavity, etc. Sources of suitable absorbent plastics are disclosed, for example, in U.S. patent No. 4806207 (Monson etc. /Monzon et al./), issued February 21, 1989, and U.S. patent No. 6139961 (Blankenship etc. /Blankenship et al./); issued October 31, 2000, the contents and disclosure of which is incorporated herein in full by reference.

[0034] For the purposes of the present invention, the term "fume" refers to the noncrystalline silicon dioxide, which may be the intelligent flaming pyrolysis of silicon tetrachloride of quartz sand, vaporized in an electric arc at 3000°C, and so on Microsilica may have a primary particle size from about 5 to 50 nm. The primary particles of silica fume is not porous, agglomerated secondary particles formed in the solution, and usually have a surface area of 50-600 m2/year Sources suitable microsilica can be obtained from companies Evonik Degussa, Cabot and Wacker Chemie Dow Corning.

[0035] For the purposes of the present invention, the term "binder matrix of the pigment coating, swelling under the influence of water" refers to a binder matrix, swelling under the influence of water to cover the paper base, which can be used to enhance the binding ability of the composition of the pigment coating, coating etc. of the Binder matrix of the pigment coating, applicable in the present description, include water-soluble polymeric binder and a polymeric latex binder, which were sewn so that the binder matrix swells under the influence of water, but insoluble in water.

[0036] For the purposes of the present invention the term "water-soluble polymeric binder" refers to a binder agent for pigments the basics, which can include linear, branched or grafted polymers or copolymers that contain sufficient hydrophilic segments, to make the polymer soluble is m in water. Sources of suitable water-soluble polymeric binder may include one or more of: starch binder, cellulose binder (such as Methocel K, cellulose ether from Dow Chemical company), binder based on polyvinyl alcohol (such as Elvanol 70-06, fully hydrolyzed polyvinyl alcohol from DuPont), a binder based on polyacrylic acid binder based on poly (methacrylic acid), binders based on polyvinylene, binder based on polyacrylamide, polyester resins, binders based from sulphonated polystyrene binder based on carboxylating polystyrene and so on

[0037] For the purposes of the present invention, the term "starch binder" refers to a water-soluble polymeric binder agent for pigments coating that includes one or more of: starch, a derivative of starch, etc. Suitable starch binder can be derived from natural starch, for example, natural starch derived from known plant source, for example, wheat, maize, potato, tapioca etc., Starch binder may be modified (i.e., modified starch) one or more chemical treatments known in the field of starch binders for paper, for example, by oxidation to convert some is from CH. 2OH groups,- COOH groups, etc., In some cases, the starch binder may have a small percentage of acetyl groups. Alternatively, the starch binder may be chemically treated to give it a cationic (i.e., cationic starch) or amphoteric (i.e., amphoteric starch), i.e. cationic, and anionic charge. The starch binder may also be a starch converted to starch ether or hydroxyalkylated starch by replacing some-OH groups, for example-och2CH2IT is the group, -och2CH3the group, -och2CH2CH2HE's groups, etc. Another class of chemically processed starch binder that can be used, known as starch phosphates. Alternatively, the raw starch can be hydrolyzed by dilute acid, enzyme, etc. to obtain a starch binder in the form of gum dekstrinovym type.

[0038] For the purposes of the present invention the term "polymer latex binder" refers to a binder agent for pigments coating, which includes a polymer emulsion, polymer suspensions, etc. Sources of suitable polymeric latex binder may include one or more of: styrene-butadiene rubber latexes (such as CP620NA from Dow Chemical), latex based, acrylic on what the iMER, the latex-based polyvinyl acetate latex based on styrene and acrylic (such as CP6810NA from the Dow Chemical company), polyurethane latexes, latex-based starch and copolymer of acrylic latexes based on starch / styrene and acrylic (such as copolymers of starch/latex PenSize and PenCP from Penford Products), latexes based on polyvinyl alcohol (PVOH)of a copolymer of styrene and acrylic latexes based on PVOH copolymer/acrylic and so on

[0039] For the purposes of the present invention, the term "crosslinked" refers to a binder matrix, which is chemically and/or physically cross-linked to become swell under the influence of water, but insoluble in water.

[0040] For the purposes of the present invention, the term "physically crosslinked" refers to a binder matrix, which effectively stitched due to the structure of the polymer matrix (e.g., the presence of the crystalline segments of the polymer chain, more macromolecular segments Tg of the polymer chain, the hydrophobic segments of the polymer chain, which are not soluble in water, and so on), and not due to chemical crosslinking. Suitable physically crosslinked binder may include high molecular weight (twisted) starch polymers or fully hydrolyzed polyvinyl alcohols (PVOH), which may be crystalline segments in the polymer chain, which are not soluble in water at room temperature,or copolymers, such as PenCote, PenCP, PenSize, the penstock and so on, which are graft copolymers of starch and styrene-acrylic polymers which contain styrene and/or acrylic side chains, which are not soluble in water, and combinations or mixtures of such physically cross-linked polymers.

[0041] For the purposes of the present invention, the term "chemically cross-linked" refers to a polymeric matrix, which is tailored using chemical cross-linking agents. Suitable chemically crosslinked polymers can include those that can be chemically cross-linked using, for example, glyoxalic, salts of boric acid, organic salts of titanium, epoxides (such as Heloxy 67 from Hexion), and so on, (for example, effective for polymers having hydroxyl groups such as polyvinyl alcohols, modified starches, gidroksilirovanii acrylic polymers or gidroksilirovanii styrene-acrylic polymers, cellulosic polymers, and so on), zirconium salt or aziridine (for example, effective for polymers having hydroxyl and especially carboxyl groups, such as acrylic latexes, guar gum, carboxymethyl cellulose, styrene-acrylic copolymers, polyurethanes, epoxy resins and so on and so forth, and combinations or mixtures of such physically cross-linked polymers.

[0042] For the purpose of the present invention, the term "processing" in relation to coatings and is notitiam, used for obtaining such coatings can include adding, sedimentation, deposition, sputtering, coating, being covered, distribution, cleaning, finishing, dipping, etc.

[0043] For the purposes of the present invention, the term "volume of coating the surface of the paper substrate" refers to the number of coatings or compositions used to obtain such a coating is present on a specific side or surface treated paper base. The amount of coating of the paper base may be determined in grams of the composition per square meter of the paper base (below referred to as"g/m2").

[0044] For the purposes of the present invention, the term "mainly remains on the surface(s) of the paper substrate" refers to a coating or composition used to obtain such coverage, mostly remaining on the surface of the paper base and does not absorb into the paper base.

[0045] For the purposes of the present invention, the term "device for coating" refers to a device, equipment, machine, etc. that can be used for processing, application, etc. of the coating or composition used to obtain such coverage, on one or more sides or surfaces of the paper base, for example, immediately after the paper dried basis for the first time. Device for the application covered with what I can include devices for coating with an air scraper, the device with the rod for a coating device with a squeegee coater, size press, and so on, See the publication: G. A. Smook, Handbook for Pulp and Paper Technologists (j.E. CMYK Handbook technologist pulp and paper industry") (2nd ed., 1992), pages 289-92, the contents and disclosure of which are incorporated herein by reference, which shows a General description of the device for applying the coating, which can be used here. The size press may include the size press with a bathtub, a metering size press, and so on, See the publication: G. A. Smook, Handbook for Pulp and Paper Technologists (2nd ed., 1992), S. 283-85, the contents and disclosure of which are incorporated herein by reference, which shows a General description of size presses, which can be used here.

[0046] For the purposes of the present invention, the term "the size press with medium contact zone" refers to the size press having filled in the contact zone (tank), also known as "the size press with a bathtub". Size press with medium contact zone may include vertical size press, a horizontal size press, and so on

[0047] For the purposes of the present invention, the term "metering size press" refers to the size press, which includes a component for distribution, dispensing, etc. deposited, nanosims and so on coatings or compositions used to obtain such coverage, on the side or surface of the paper base. Metering size press may include a metering size press rod metering size press shaft, the size press with a metering doctor blade, etc.

[0048] For the purposes of the present invention, the term "metering size press with a rod" refers to a metering size press, which uses the terminal for distribution, dispensing, etc. coatings or compositions used to obtain such coverage, on the surface of the paper base. The terminal may be stationary or to move relative to the paper base.

[0049] For the purposes of the present invention, the term "metering size press with an adjustable shaft" refers to a metering size press, which can be used shaft with an adjustable gap, gear shaft, soft rolling shaft and so on Shaft with an adjustable gap, gear shaft, soft rolling shaft, etc. can be fixed relative to the paper base can rotate relative to the paper base and so on

[0050] For the purposes of the present invention, the term "metering size press with scraper" refers to dosing media, which can use the scraper for distribution, dispensing, etc. of the coating or the composition is, used to obtain such coverage, on the surface of the paper base.

[0051] For the purposes of the present invention, the term "drying metal salt" refers to those salts of metals, which can improve the drying time of the ink deposited or applied on the basis for printing in inkjet printing processes. These drying metal salts include one or more multivalent drying of metal salts and may, optionally, also include one or more monovalent drying of metal salts. Contrarian for these metal salts may include, for example, chloride, bromide, acetate, bicarbonate, sulfate, sulfite, nitrate, hydroxide, silicate, chlorohydrate etc. Drying salt of the metal may be introduced as an aqueous solution, including, for example, from about 1 to about 60% (e.g., from about 10 to 40%) polyvalent metal salt drying.

[0052] For the purposes of the present invention, the term "multivalent drying the metal salt" refers to those clothes metal salts in which the cation portion is multivalent cation having a positive charge of 2 or more (for example, a calcium cation, a magnesium cation, aluminum cation, and so on), such as calcium salts, magnesium salts, aluminum salts, etc., and which are soluble in water. Suitable multivalent drying metal salts (e.g., TLD is the valence of the salt, trivalent salt, and so on) can include one or more of calcium chloride, calcium acetate, calcium hydroxide, calcium nitrate, calcium sulfate, calcium sulfite, magnesium chloride, magnesium acetate, magnesium nitrate, magnesium sulfate, magnesium sulfite, aluminum chloride, aluminum nitrate, aluminum sulfate, aluminum chlorohydrate, sodium sulfate-aluminium, vanadium chloride, etc.

[0053] For the purposes of the present invention, the term "monovalent drying the metal salt" refers to those clothes metal salts in which the cation portion is a monovalent cation with a positive charge of 1 (for example, sodium cation, potassium cation, lithium cation, and so on), such as salts of sodium, potassium salts, lithium salts, etc. Suitable monovalent drying metal salts can include one or more of sodium chloride, sodium acetate, sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium silicates, sodium sulfate, sodium sulfite, sodium nitrate, sodium bromide, potassium chloride, potassium acetate, potassium carbonate, potassium bicarbonate, potassium hydroxide, silicates of potassium, potassium sulfate, potassium sulfite, potassium nitrate, potassium bromide, lithium chloride, lithium acetate, lithium carbonate, lithium bicarbonate, lithium hydroxide, lithium silicates, lithium sulfate, lithium sulfite, lithium nitrate, lithium bromide, etc.

[0054] For the purposes of the crust is asego of the invention, the term "cationic agent for fixing dye" refers to the cationic compounds (e.g., nitrogen-containing compounds or mixtures of such compounds that may contribute to fixation, seizure, etc. of the ink applied in the process of inkjet printing, and which can impart other properties, including resistance to water. These cationic agents for fixation of the dye may include compounds, oligomers and polymers that contain one or more functional groups of the Quaternary ammonium, and may include water-soluble cationic polymers, which can form a complex with anionic dyes. Such functional groups may vary widely and may include substituted and unsubstituted amines, imine, amides, urethanes, groups, Quaternary ammonium, dicyandiamide, guanidine, biguanide etc. are Examples of such compounds are polyamine, polyethyleneimine, polymers or copolymers diallyldimethylammonium chloride (DADMAC), copolymers of vinylpyrrolidone (VP) and stereoselectivity by diethylaminoethylmethacrylate (DEAMEMA), polyamides, polyhexamethyleneguanidine (RNPS), cationic polyurethane latex, cationic polyvinyl alcohols, copolymers of polyalkylene and dicyandiamide, polyaddition of minglecity, poly[oksietilenom(dimethylimino) ethylene (dimethylimino) ethylene] dichloride, etc. or combinations thereof. These cationic agents for fixation of the dye may include ISCO and weight cationic polymers and oligomers, having a molecular weight equal to or less than 100 000, for example, equal to or less than approximately 50 000, for example, from about 10 000 to about 50 000. Examples of such materials are copolymers of polyalkylene dicyandiamide, poly [oxy-ethylene(dimethylimino) ethylene(dimethylaminoethyl] dichloride and polyamine having a molecular weight in a desirable range. Cationic agents for fixing dyes suitable for the present document, may include low molecular weight cationic polymers such as a copolymer of polyalkylene dicyandiamide, poly[oksietilenom (dimethylimino)ethylene(dimethylimino)ethylene] dichloride, for example, low molecular weight copolymers of polyalkylene dicyandiamide. See U.S. patent No. 6764726 (Yang and others), issued July 20, 2004, all of the disclosure and contents of which are incorporated herein by reference.

[0055] For the purposes of the present invention, the term "opacity" refers to the ability of paper to hide objects such as printed images on the following pages, or printed on the reverse side, for example, to minimize, prevent, and so on, ray, etc., In the sense it is used here, the opacity of the basics of paper can be measured, for example, as a TAPPI opacity and transparency. The TAPPI opacity can be the measurement is according to the standard T om-91.

[0056] For the purposes of the present invention, the term "smoothness of the paper by Parker" refers to the extent to which the surface of the paper deviates from a flat or essentially flat surface which is influenced by the thickness of paper, paper width, the deviation from a flat surface, and so on, which is measured by the control TAPPI method T 555 om-99. Values of smoothness of paper by Parker reflect the degree of "mikroheranhvatho" basis or cover the basics. The higher the value of smoothness of paper by Parker, the greater the roughness has a base or floor surface. Conversely, the lower the value of smoothness of paper by Parker, the greater the smoothness of the ground or surface.

[0057] For the purposes of the present invention, the term "print quality" refers to such factors, traits, characteristics, etc. that can affect handling etc, exterior, form, etc. of the printed image on the print. The print quality basics paper can be measured as, for example, one or more of: (1) the print density; (2) print contrast; (3) drying time; (4) the sharpness of the edges; (5) colors; (6) color saturation; (7) gloss printing; (8) the presence of spots when printing and (9) the flowing colors on the color. For the purposes of the present invention, the print quality basics paper here mainly determined by the density measurement is Ekati, the drying time and the sharpness of the edges of the basics of paper.

[0058] For the purposes of the present invention, the term "print density" refers to the optical density, measured by using a reflection densitometer (X-Rite, Macbeth, and so on), which measures the light absorption property of the image printed on the sheet of paper. For example, the higher the print density, the darker it may seem a printed image. High density printing also give better contrast, sharper image for viewing, and so on, the print Density measured here as the print density of the black (i.e., the print density of images that are black in color). The method of measuring the print density of the black is printing a solid block of black color on a sheet of paper and the subsequent measurement of optical density. The printer used to print a solid block of black color on paper, is a HP Deskjet 6122, manufactured by Hewlett-Packard, (or equivalent), which uses the black cartridge #45 (product number HP A) (or equivalent). The default installation uncoated paper type and print mode "Fast, normal quality" are used to print a solid block of black color on a sheet of paper. Spectrodensitometer X-Rite model 528 6 mm aperture can be used to measure optical p is h solid block of black color, printed on a sheet of paper to get the values of the print density of the black. Units for measuring the print density of the black Visual color, the status of T and the mode of the absolute density. In General, acceptable values of the print density of the black ("ODO"for the black pigment is at least approximately 1.45 when using standard mode printing (plain paper, normal quality) for desktop HP inkjet printer and you are using the most ordinary ink black pigment (equivalent to cartridge No. 45 for inkjet printing). Some embodiments of the basics of paper of the present invention can have the values of the print density of the black (ODOat least approximately 1,50, for example, at least approximately 1.60. See also application for U.S. patent No. 2007/0087134 (Koenig and others), published on 19 April 2007, all disclosure and contents of which are incorporated herein by reference, and which describes how to do this check the print density of the black.

[0059] For the purposes of the present invention, the term "print contrast" refers to the difference in pitch between the print area and a blank area.

[0060] For the purposes of the present invention, the term "drying time" refers to the time needed to besieged chernilevsky on the substrate surface to be printed. If the deposited ink dries fast enough, they can move on to the other core sheets for printing, which is undesirable. The percentage of transferred ink ("IT%") is registered as a measure of the drying time. The higher the percentage of transferred ink, the more (worse) the drying time. Conversely, the lower the percentage of transferred ink, the less (better) the drying time. Embodiments of the basics of paper of the present invention may interest the value of the transferred ink ("IT%"), equal to or less than about 65%. In some embodiments, the implementation of the framework paper of the present invention, the value of 1T% can be equal to or less than approximately 50%, for example, equal to or less than about 40% (for example, equal to or less than approximately 30%).

[0061] For the purposes of the present invention, the term "transfer ink" refers to a test to determine the drying time basis for printing, for example, sheets of paper for printing. "The transfer of ink" is defined here as the value of the optical density of the transferred after rolling roller, and is expressed as a percentage of optical density, moved to an empty part of the canvas to print (e.g., sheet of paper) after rolling the platen. This method includes printing a solid color blocks on the paper having a base weight of 20 pounds per 1300 square feet (using PR is ntera HP Deskjet 6122 from Hewlett-Packard company (or its equivalent), uses the black cartridge #45 (product number HP A) (or its equivalent) with default values of "Uncoated paper" and "Fast normal print quality"), the shutter speed for a certain period of time, 5 seconds after printing, and then fold in half so that the printed portion was in contact with the blank part of the paper, and rolling a hand roller weighing 4.5 pounds, as, for example, the platen room HR-100 from the company Chem Instruments, Inc., Mentor, Ohio, USA. The optical density measured at an adjourned (ODT), not moved (ODO) parts of the block and the area without image (ODB) reflective densitometer (X-Rite company, Macbeth, and so on). The percentage of transfer ("IT%") define as IT%=[(ODT-ODB)/(ODO-ODB)]×100. See also application for U.S. patent No. 2007/0087134 (Koenig and others), published on 19 April 2007, all disclosure and contents of which are incorporated herein by reference, and which describes how to perform such a test transfer of ink.

[0062] For the purposes of the present invention, the term "sharpness of the edge (EA) refers to the degree of sharpness (or roughness) of the edge of the printed image (e.g., printed lines). The sharpness of the edges (EA) can be measured by the device, such as a System for analyzing personal images QEA (company Quality Engineering Associates, Burlington, Massachuset is), scanner QEA ScannerlAS or system camera-based ImageXpert KDY. All these devices receive the enlarged digital image of the sample and calculate the value of EA by image analysis. The value of EA (also called "edge roughness" is defined in method ISO 13660. This method includes printing a solid line with a length of 1.27 mm or more and a sample with a resolution of at least 600 dpi. The device calculates the location of the region on the basis of the darkness of each pixel is near the edges of the line. The threshold region can be defined as the point 60% of the transition from the reflection coefficient of the base (bright region, Rmax) to the reflectance image (dark region, Rmax) using equation R60=Rmax-60% (Rmax-Rmin). Edge roughness can then be defined as the standard deviation of the residuals from the line fitted to the threshold of the edge line is calculated perpendicular to the fitted line. For some embodiments of the foundations of paper of the present invention, the value of EA can be less than about 15, for example, less than about 12, so that less than about 10 (e.g., less than about 8). See also application for U.S. patent No. 2007/0087134 (Koenig and others), published on 19 April 2007, all disclosure and contents of which are incorporated herein by reference, and cat heaven describes how to measure the values of the sharpness of the edge (EA).

[0063] For the purposes of the present invention, the term "color gamut" refers to the total set of possible colors in any color and can be identified by a complete subset of colors. A higher value color scale indicates the print quality with brighter color. The color scheme can be obtained by measuring the parameters of the CIE L*, a*, b* of a sequence of colored blocks, including white (blank), cyan, Magenta, yellow, red, green, blue, and black, and calculation of the appropriate colors on these measured values. Parameter CIE L* represents the white. The L* values can range from zero (representing black) to 100 (representing white or perfectly reflecting diffuser). The value a* represents the degree of green/red. A positive value a* represents red, and a negative value a* represents the green. A positive value of b* is yellow, and the negative value of b* is blue. Values of CIE L*, a* and b* can be measured with X-Rite 528 using light source D65 and angle of 10 degrees.

[0064] For the purposes of the present invention, the term "saturation" refers to more vivid or saturated color printing, high density printing and high values of colors.

[0065] For C the lei of the present invention, the term "gloss" refers to the ability of the paper to reflect some of the incident light under the mirror angle. Gloss can be based on measuring the amount of light specularly reflected from the surface of the paper sample at a given angle, for example, 75 degrees, as in the case of the gloss of 75 degrees (and according to the measurements described in the test method TAPPI T 480 om-92).

[0066] For the purposes of the present invention, the term "gloss print" relates to the measurement of gloss, made on the basis of printed paper.

[0067] For the purposes of the present invention, the term "presence of spots when printing" refers to the heterogeneity of the printed image, which can occur due to uneven application of ink, uneven ink absorption, etc. on the substrate surface to be printed. The presence of spots when printing can be measured by the tester based stains scanner, for example, the verification method of forming and spot C3PATX03 with scanner Agfa model DUOSCAN. Sample bases for printing (for example, a sheet of paper) first print control ink-jet printer. Control sample should include an image block of solid black (100%). Color block is a square with dimensions of approximately 20-50 mm 20-50 mm After exposure for 20 minutes, or when the printed image is completely dry, the sample print feature on the scanner side printing down. The scanner is positioned at a resolution of 500 dots on im. Software Verity (Verity IA LLC, 2114 Sunrise Drive, Appleton, Wisconsin, USA) can be used to analyze data from a scanner. Install the appropriate size for testing based on the size of the color block. Can be measured by two indicators spots: the rate of micropenises and the rate of macropathology. The rate of micropenises measure changes in density on the area of 0.1 square inch and the rate of macropathology measure changes in density the average density values of each square 0.1 square inch. The lower the value of the indicator spot, the better the print quality.

[0068] For the purposes of the present invention, the term "wicking color" refers to the spread of ink of the same color in ink of a different color on paper, which can reduce the resolution, color text and lines on a colored background. For example, blue and black stripes can be printed on a yellow background. Green and black stripes can be printed on a background color Magenta, and red and black stripes can be printed on a background color cyan. The smallest distance in micrometers between two colored lines without clamping (or numb color more than half on the adjacent color bar) is registered as an indicator of flowing color. In other words, the smaller the value of flowing color is a color, the better the print quality. The distance that can be tested include 50 μm, 100 μm, 150 μm, 300 μm, etc., In some embodiments, implementation of the present invention tested distance can reach 150 μm or less before will be closing (leaking) that can be considered "good" property of flowing colors on the color.

[0069] For the purposes of the present invention, the term "digital printing" refers to the reproduction, formation, development, presentation, etc. of digital images based on the print, for example, on paper. Digital printing may include laser printing, inkjet printing, and so on

[0070] For the purposes of the present invention, the term "laser printing" refers to the technology, method, device, and so on, digital printing, in which a laser beam is used to create, view, etc. latent image on, for example, at Xerox drum. Light of the laser beam can then create a charge on the drum, which can then capture the toner, which has the opposite charge. This toner can then be transferred to paper and created, formed, presents, etc. connected with the base for printing by, for example, thermofixation.

[0071] For the purposes of the present invention, the term "electrophotographic process registration" indicates the I to the process, which registers the image based on the printing, such as paper, by xerography or Electrophotography. In the electrophotographic process, the image is often formed on the basis of the toner particles, which are deposited on one surface or side of the base for printing and then attach the heat method such one surface or side of the base for printing, for example, by heating. When electrophotographic registration of the print may have two relatively smooth or flat sides or surfaces, or may have one side or surface that teksturirovanie, rough or smooth/not flat, while the other side or surface that is relatively smooth or flat.

[0072] For the purposes of the present invention, the term "ink jet printing" refers to refers to the technology, method, device, and so on, digital printing, which can form an image on the basis of the print, such as a base paper, by spraying, spray coating, etc. of tiny drops of liquid ink onto the print through the nozzle of the printer. The size (e.g., smaller), precise application, and so on, ink drops can provide more high-quality inkjet prints. Inkjet printing can include continuous ink jet printing, ink jet printing on request, and so on

[0073] For the purpose of this is to subramania the term "liquid" refers to non-gaseous liquid composition, connection, material, etc. that are easy fluid at the temperature of use (e.g., at room temperature) with a slight tendency toward dispersion or without it and with a relatively high compressibility.

[0074] For the purposes of the present invention, the term "viscosity" in relation to compositions for sizing the surface of the paper refers to the viscosity of Brookfield. The viscosity Brookfield can be measured by Brookfield viscometer at a temperature of 150°F, using spindle No. 5 at 100 rpm

[0075] For the purposes of the present invention, the term "printer" refers to any device that prints an image based on the print, such as a sheet of paper, including laser printers, inkjet printers, electrophotographic recording devices (e.g., copiers, scanners, Fax machines and so on

[0076] For the purposes of the present invention, the term "pigment printer" can refer or to inks (which are used, for example, in an inkjet printer and so on), or the toner which is used, for example, in a laser printer, electrophotographic recording device, and so on).

[0077] For the purposes of the present invention, the term "ink" refers to a pigment printer that is used in inkjet printers. The term "ink" may include ink dye-based and/or based ink pigment. Che the Nile-based dye containing a dye, which can be an organic molecule that is soluble in the medium of ink. Ink dye-based can be classified according to their use as acid dyes, basic dyes or direct dyes, or according to their chemical structure as azo dyes, which are based on isostructure-N=N-; diazonium dyes based on diazonium salts; quinone-minovia dyes that are derived from quinine, etc., based Ink pigment include pigment, which is a solid colored particle, suspended in the medium of ink. Such a particle may include a colored mineral precipitated dye precipitated dye, which is attached to the carrier part, and so on, the Ink often served, deposited, sprayed, etc. on Wednesday for printing in the form of drops, which are then dried in the medium to be printed, forming a printed image.

[0078] For the purposes of the present invention, the term "toner" refers to a pigment printer that is used in laser printers. Toner is often served, precipitates, etc. on Wednesday for printing in the form of particles, and the particles are then fixed by a heat method on a printing medium, forming an image.

[0079] For the purposes of the present invention, the term "room temperature" refers to the generally accepted value of room temperature, i.e., the rate is atory the environment from 20°C to 25°C.

[0080] For the purposes of the present invention, the term "test sizing Hercules" or "HST" refers to the verification of the resistance to penetration, for example, an acidic aqueous solution through the paper. HST can be measured using the procedure described in the method 530 RT-89 standard TAPPI. See U.S. patent No. 6764726 (Yang and others), issued July 20, 2004, all of the disclosure and contents of which are incorporated herein by reference. The HST value measured under the conditions described in TAPPI standard T-530 RT-89, using 1% of the ink on the basis of formic acid and an end point of reflection of 80%. The measured value of the HST reflects the relative level of sizing paper and/or paper-based. For example, lower values of the HST (i.e., the HST values below approximately 50 seconds) reflect a relatively low level of sizing paper based paper. Conversely, higher values of the HST (i.e., the HST values above approximately 250 seconds) reflect a relatively high level of sizing paper and/or paper-based. For the purposes of the present invention is HST in the range of from about 50 to about 250 seconds is considered to be an intermediate value HST, reflecting an intermediate level sizing of paper and/or paper-based. The measured value of the HST also reflects both the level of the internal sizing of paper and the level of proclaimers paper. But at relatively low levels of agents for paper sizing, typically used in the manufacture of paper, for example, from about 1 to about 2 pounds per ton, or from about 0.04 to about 0.08 g/m2for paper having a base weight of 20 pounds per 1300 square feet), the value of HST basics paper mainly (if not exclusively) reflects the contribution made by agents for the internal sizing of paper (which usually greatly enhance the value of the HST even at low application levels), and not agents for surface sizing of paper (which usually increase the value of HST minimum at such low levels of usage).

[0081] For the purpose of the present invention, the term "porous surface, perceiving ink" refers to the coverage of the surface, which is able to absorb, absorb, absorb, etc. deposited ink for inkjet printer.

[0082] For the purpose of the present invention, the term "coupon" refers to the basis of printed material at least on one side, made on an inkjet printer using the ink-based pigment, which propagate in the place of purchase (e.g., checkout) in the retail trade.

[0083] For the purpose of the present invention, the term "resistance to wet abrasion resistance refers to the resistance of the image produced jet mobile is AMI, when it is exposed to water and abrasion. Test for resistance to wet abrasion can be performed by using, for example, marker, wet finger, a special device (crock meter) (i.e., the device automatically enters the material, such as paper, cloth, sandpaper, etc. in contact with the sample, such as scanned paper and provides abrasion at a certain speed with a certain force and with a certain number of runs that is programmed into the device), and so on, the Image is performed by ink jet ink, which gives the least amount of erosion after such a test, can be considered as having the best resistance to wet abrasion.

[0084] For the purpose of the present invention, the term "ink" refers to ink (in grams per square meter (g/m2)), which is applied on the base paper in an inkjet printer to form an image. A specific level of your ink usage may depend on the choice of a particular printer, the print mode (base, print quality, print speed, and so on) and so on

Description

[0085] embodiments of the products of the present invention, including the basis for printing, offer the advantage of high print quality, good resolution printing, fast drying, with whom Onesti to wet abrasion, etc. at lower levels of use pigment inkjet ink. Embodiments of these foundations for printing include a paper base having a first surface and a second surface, and the paper base has a value of HST approximately 50 seconds, such as about 40 seconds; and swell under the influence of water covering the basics at least one of the first and second surfaces. Covering the basics includes: a binder matrix of the pigment coating with crosslinked polymer swellable in water, and the binder matrix comprises a water-soluble polymeric binder and a polymeric latex binder in a mass ratio of at least about 1:1, for example, in the range from about 1:1 to about 10:1, such as from about 1.5:1 to about 2.5:1 (for example, approximately 2:1), which were sewn; and the pigment coating, dispersed in a binder matrix in a mass ratio of at least about 2:1, for example, in the range from about 2:1 to about 10;1, such as from about 3:1 to about 5:1. The pigment coating comprises: a larger porous particles of the pigment coating having an average particle size of more than approximately 1 micron in diameter and an effective pore volume of at least about 0.1 cm3/g, such as at least PR is approximately 0.2 cm 3/g, for example at least about 0.3 cm3/g (for example, in the range from about 0.4 to about 2.2 cm3/g) (larger porous particles of the pigment coating can include one or more of: particles of ground calcium carbonate particles precipitated calcium carbonate particles of absorbent plastic, clay particles, kaolin particles, particles of calcined clay, talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silicon dioxide, the particles of zeolite and so on); and smaller pigment particles coating with an average particle size of approximately 1 micron or less in diameter (smaller pigment particles coating can include one or more of: particles of microsilica, the aluminium oxide particles, particles of ground calcium carbonate particles precipitated calcium carbonate, clay particles, kaolin particles, particles of calcined clay, the particles of bentonite compounds, preventing clay, talc particles, particles of titanium dioxide, the particles of barium sulfate or particles of silicon dioxide, the particles of zeolite and so on). Larger porous particles of pigment coatings are smaller pigment particles coating in a mass ratio of at least about 0.2:1, for example, in a mass ratio of at least about 1:1, such as at least about 3:1 Coverage Foundation provides receptive to ink porous surface and the pigment coating is to number, sufficient to impart at least one of the first and second surfaces of the values of the smoothness of the surface by Parker at least about 4, for example, in the range of from about 4 to about 12, such as from about 4 to about 8.

[0086] embodiments of the present invention also include a method of cooking basics for printing, comprising a paper base coated. In embodiments, the implementation of this method, at least one of the first and second surfaces of the paper base treated swellable under the influence of water covering the basics.

[0087] embodiments of the products of the present invention, including the basis for printing, we can offer coated paper suitable for printing coupons on one or both surfaces of the base. Accordingly, embodiments of the present invention can also include a method of printing based on the print, which is described above. In embodiments, the implementation of this method of printing an image then print at least one of the first and second surfaces on an inkjet printer with the ink usage to about 7 g/m2for example, in the range of from about 0.5 to about 7 g/m2such as from about 0.5 to about 5 g/m2(for example, from the roughly 0.5 to about 3 g/m 2). In some embodiments, the implementation of this method of printing the print includes coupon paper with an image printed on the coupon paper in the form of an image of the coupon.

[0088] Coupons for goods or services can be distributed at points of purchase (for example, settlement offices). These coupons may have information printed on one surface using the offset or flexographic printers. On the other side can be printed with additional information, such as barcodes that can be printed on the coupon at the point of distribution on inkjet printers using ink-based pigment. To meet the requirements of distributors coupons paper base used in inkjet printers, should be suitable to print these coupons with high quality (for example, easy to read) and good resolution (for example, good readability) when using the smallest possible number of ink (i.e., decreased use of ink), and be quick drying and resistant to smearing in wet conditions.

[0089] Prior to coating for paper bases used with inkjet printers, can provide high print density and also be quick drying. Examples of such paper bases coated include boom is GU coated photographic quality", having a glossy coating consisting of a swellable under the influence of water polymers or particles of aluminum oxide, or matte finish, consisting of microsilica or precipitated silicon dioxide. These types of glossy paper "photographic quality" coated can provide excellent density and resolution printing and can quickly dry out when used in a desktop photo printers, but have poor resistance to smearing when printing inkjet-based ink pigment. Matte paper "photographic quality" from the floor may also have good resistance to bleeding and the print quality when printing on a desktop inkjet photo printers. But glossy and matte paper types "photographic quality" coating can have a very low print density when printing on printers "photographic quality" due to the very small amount of ink. For example, a printer for coupons may only provide approximately 0.8 g/m2ink against, for example, from about 8 to about 10 g/m2on a standard desktop inkjet printer. Such a small amount of ink can lead to poor dispersion of the points, which gives a good resolution, but lower print density.

[0090] the problem of using these types of paper pictures the specific quality coated with jet printers can be solved by variants of the implementation framework for the printing of the present invention. These are the basics for printing include a paper substrate with a coating, which can be used for printing, for example, coupons for inkjet printers for coupons at relatively low levels of use of the ink (for example, at levels up to about 7 g/m2), while providing high print quality and good resolution (for example, barcodes), a relatively short drying time, resistance to creasing, etc. Short drying time can be achieved by using the paper base, which has a reduced internal/surface sizing, i.e. a lower value of HST approximately 50 seconds. Increased density and good print resolution can be achieved by adjusting the porosity of the coating of the paper base so that it corresponded to the amount of ink deposited on the surface of the paper base. In this respect, it is possible to use a relatively small thickness of the coating (i.e., less than approximately 10 μm) with increasing mass relations pigment coating binder matrix (i.e., at least about 2:1, for example, in the range from about 2:1 to about 10:1) and the choice of coating pigments, which provide a suitable pore volume for retaining ink in the coating, and allowing the ink drop a little soap the procedure on the surface, to increase the print density to the maximum without damage to the print resolution.

[0091] in Addition, the resistance of the coated paper to wet abrasion is achieved by using: (a) swellable in water binder polymer matrix of the pigment coating comprising one or more water-soluble polymeric binder and one or more polymeric latex binder in a mass ratio of at least about 1:1 (for example, a binder of ethyl starch and styrene-acrylic latex binder in a mass ratio of 2:1, made with glyoxal) to make the coating is resistant to water; and (b) the creation of mikroheranhvatho in the coverage of the surface by selecting the pigment coating, which includes a larger porous particles of the pigment coating is larger than about 1 μm (e.g., size, on average, approximately 4 microns). In order to achieve a suitable absorbency pigment bases and resistance to wet abrasion, the pigment coating comprises: a larger porous particles of the pigment coating having an effective pore volume of at least about 0.2 cm3/g (i.e., increased porosity), such as cationic ground calcium carbonate (ICC), having a pore volume of at least about 0.3 cm3/g (e.g., such as available under the name Omyajet) is whether the absorbent plastic pigment to provide porosity, and smaller particles of pigment coating (i.e., low porosity), which may be the same as that available under the name of Degussa Aerodisp W7330N to provide resistance to water, in a mass ratio of the larger to the smaller pigment particles coating, for example, approximately 80:20 (i.e., approximately 4:1).

[0092] In some embodiments, the implementation of these grounds for printing: (a) paper-based, you can use a relatively small number of agents for internal sizing and/or surface sizing of paper, to get the value of HST in the range from 0 to about 50 seconds; (b) the thickness of the coating bases may be from about 3 to about 8 μm (for example, if it is less than approximately 3 μm, it may be difficult to obtain uniform coverage of the surface without micromac); (c) the mass ratio of the pigment coating binder matrix should be at least about 2:1, for example, from about 2:1 to about 10:1, when using the increased rate of binding more porous pigments in the coating; (d) use for pigment coating mixture comprising cationic ICC from the company Omya (such as available under the name Omyajet) having an average particle diameter of about 4-5 μm and a specific surface area of approximately 43 m2/g, which is AET to this pigment effective pore volume of about 0.2 cm 3/g (vs. typical anionic ICC, having a particle size of from approximately 0.6 to approximately 1.0 μm in diameter and without pore size) to obtain an improved (shorter) the drying time, and anionic silica fume from the company Degussa (Aerodisp W7330N) in a mass ratio of approximately 80:20 (i.e., approximately 4:1); (e) leaded corn starch and a polymer latex in a mass ratio of at least about 2:1 in a binder matrix; and (f) covering the basics crosslinked using a crosslinking agent based on glyoxal to make a waterproof coating, with silica fume improves the resistance to water.

[0093] One variant of the method of the present invention for processing one or both surfaces of the paper base coating composition, comprising one or more binder pigment coating, swelling under the influence of water, and one or more pigments of the coating, also shown in FIG.1. In FIG.1 shows a variant implementation of the system for implementation variant of the method of the present invention, which may be in the form of, for example, a size press with a metering rod, indicated in the General position 100. The size press 100 may be used for coating base paper, indicated in General position 104. The base 104 moves in n the Board, shown by the arrow 106, and has a pair of opposite sides or surfaces indicated respectively positions 108 and 112.

[0094] the Size press 100 includes a first node that is specified in the General position 114, for applying the coating composition to the surface 108. Node 114 includes a first reservoir, indicated in General position 116 containing the coating composition, indicated in General position 120. The first receiving shaft, indicated in General position 124, which can rotate in the counterclockwise direction indicated by the curved arrow 128, takes a certain amount of the composition of the coating from the source 120. This amount of coating composition, which is a rotating shaft 124 can then be transferred to the first shaft applicator, indicated in General position 132, which rotates in the opposite direction, i.e. clockwise, indicated by the curved arrow 136. (The location of the first receiving shaft 124, shown in FIG.1, are merely illustrative, and the shaft 124 may be positioned differently relative to the first shaft of the applicator 132, so that the composition of the coating could be transferred to the surface of the shaft of the applicator 132). The amount of coating composition that is transferred to the first shaft applicator 132, it is possible to adjust the metering rod 144, which distributes moved composition on the surface of the shaft is-applicator 132, providing relatively uniform and uniform thickness of the first coating, which is indicated by the position 148, the coating on the first surface 108 of the basics of shaft 104 applicator 232.

[0095] As shown in FIG.1, the size press 100 can also be equipped with a second node that are specified in the General position 152, for applying the coating composition to the surface 112. The node 152 includes a second reservoir, indicated in General position 156, a second source of coating composition, indicated in General position 160. The second receiving shaft, indicated in General position 164, which can rotate in the clockwise direction shown by the curved arrow 168, takes a certain amount of the composition of the coating from the source 160. This amount of coating composition, which is a rotating shaft 164 can then be transferred to the second receiving shaft, indicated in General position 172, which rotates in the opposite direction, i.e. counterclockwise, as shown by the curved arrow 176. As shown in FIG.1 by the dashed rectangle and the arrow 176, the second receiving shaft 164 may be positioned differently relative to the second shaft of the applicator 172, so that the composition of the coating could be transferred to the surface of the shaft of the applicator 172. The amount of coating composition that can be transferred to the second shaft applicator 172 may maintains the further second metering rod 184, which distributes moved composition on the surface of the shaft-applicator 172, providing relatively uniform and uniform thickness of the second coating, the specified position 188, the coating on the second surface 112 of the basics of shaft 104 applicator 172.

[0096] In FIG.2 shows another variant implementation of the system for implementation variant of the method of the present invention, which may take the form of, for example, a horizontal size press with medium contact zone indicated in the General position 200. Horizontal size press 200 can be used for applying the coating composition on the canvas of paper specified in the General position 204 (e.g., as described for FIG.1, above). Canvas 204 moves in the direction indicated by the arrow 206, and has a pair of opposite sides or surfaces indicated respectively positions 208 and 212.

[0097] the Horizontal size press 200 includes a first source of coating composition, indicated in General position 216 in the form of a nozzle which sprays a stream of coating composition specified position 220, in General down in the direction of the surface of the first countershaft, the specified position 232, which rotates in the clockwise direction, which is indicated by the curved arrow 236. Fill the tank or tub, indicated in General position 240, with whom is leased in the area of contact between the first transmission shaft 232 and the second gear shaft 272 due to plate or barrier (not shown), below the contact zone. The intermediate shaft 232 causes the composition of the first coating is relatively uniform and uniform thickness, the specified position 248, on the first surface 208 of the blade 204.

[0098] the Second source of coating composition, indicated in General position 256, in the form of a nozzle which sprays a stream of coating composition, indicated by the position 260, in General down towards the surface of the second countershaft specified position 272, which rotates in the counterclockwise direction, which is indicated by the curved arrow 276. The intermediate shaft 272 passes composition of the second coating is relatively uniform and uniform thickness, the specified position 288, on the second surface 212 of the blade 204.

[0099] In FIG.3 shows another variant implementation of the system for implementation variant of the method of the present invention, which may take the form of, for example, the vertical size press with medium contact zone indicated in the General position 300. Vertical size press 300 may be used for applying the coating composition to the paper web, indicated in General position 304 (e.g., as described for FIG.1, above). Canvas 304 moves in the direction shown by arrow 306, and has a pair of opposite sides or surfaces indicated respectively positions 308 and 312.

[000] Vertical size press 300 includes the first source of coating composition, specified in the General position 316 in the form of a nozzle which sprays a stream of coating composition specified position 320, the total upward and in the direction of the bottom surface of the first gear shaft kit shaft, the specified position 332, which rotates in the clockwise direction, which is indicated by the curved arrow 336. Less fill the tank or tub, indicated in General position 340 (compared with the tank or tub 340 horizontal size press of 300), created in the contact zone between the first lower gear shaft 332 and the second upper gear shaft 372 due to plate or septum (not shown) located to the right of the contact zone. Gear shaft 332 causes the composition of the coating specified position 348, relatively uniform and uniform thickness on the bottom of the first surface 308 of the blade 304.

[0101] the Second source of coating composition, indicated in General position 356, in the form of a nozzle disperses the flow of coating composition, indicated by the position of the 360, in General downwards and towards the surface of the second upper countershaft specified position 372 which rotates in the counterclockwise direction, which is indicated by the curved arrow 376. The intermediate shaft 372 causes the composition of the coating specified position 388, relatively uniform and uniform thickness on the upper second over the awn 312 of blade 304.

EXAMPLES

[0102] examples of embodiments paper bases coated and methods for their preparation.

Example 1

[0103] the coating Composition specified in Table 1 (in units of dry parts of each ingredient, the total amount of solids of each composition, the mass of the coating on the side, and so on) is prepared and applied on both sides of base paper 38 pounds per 3300:

tr>
Table 1
ChemicalBrand nameRun 1-1Run 1-2Run 1-3Run 1-4
Larger porous particles IWC pigmentOmyajet, 36%100
Larger porous particles IWC pigmentOmyajet, 34%555555
Smaller particles IWC pigmentHydrocarb 90, 76%45
Smaller particles IWC pigmentSetacarb, 76%4545
Binder based on polyvinyl alcoholCelvol 203 S444
Starch binderPenford 29066650
The release of dye PolyDADMACNalkat 2020222
Grease calcium stearateDevflo 50C, 50%1111
Multivalent drying salt metalCaCl2, 32%222
The polyacrylate thickenerRheocarb 1200.10.5
Total parts115.1115115151.5
Solids, %42424230
Coating weight (g/m2/side)9955

[0104] the Ingredients of each composition of the coatings listed in Table 1, above, were added in this order into the mixer with a high force slice. The paper web was coated using a doctor blade device for coating speed of about 800 m/min. and Then the paper is cut into sheets of a size of 8.5 inch × 11 inch and used to print to a desktop printer Epson C+. The control sample consisted of solid blocks of black, cyan, Magenta, yellow, blue, red and green. Area without printing used to measure the Oia white. This control sample (printer EPSON S+ setting "Uncoated paper") was published in three print modes: draft, text, and image. The density of the black blocks were measured using spectrodensitometer X-Rite model, as described in paragraph [0058], above, and the results are shown in Table 2.

Table 2
SampleDraftTextImage
Run 1-10,531,381,46
Run 1-20,501,42the 1.44
Run 1-30,621,431,45
Run 1-40,921,421,46
The base paper0,811,291,32
The ink volume (g/m2)2,928,9510,32

[0105] the ink is measured by weighing a piece of paper before and after printing a solid block of black size 7.5 inches by 9 inches, and calculating the amount of ink spent on printing, in grams per square meter (g/m2). This ink was measured three times and averaged to obtain the values shown in Table 2. In FIG.4 shows graphs specified in the General position 400, the values of the print density of the black (OD) against the ink consumption values from Table 2 for the Run 1-1 (filled diamonds), Run 1-2 (filled squares), Run 1-3 (filled triangles) and Run 1-4 (solid circles) relative to the base paper (unfilled squares). A straight line 404 represents a line graph of the values of the base paper, and a curve 408 represents a logarithmic graph of the values of Runs 1-3. In FIG.4 shows that these four sample paper give similar results density black when printing in normal (text) and the best (image) modes. However, when printing in draft mode, which has a much lower value of ink, Run 1-4 gives much greater print density black (OD), because of the composition of Run 1-1 - Run 1-3 have a higher ratio of 10:1 pigment:binder, whereas the composition of Run 4 has a smaller ratio of pigment:binder 2:1. Cover PR is gona 1-1 and Run 1-2 also about two times thicker than the coating for a Run 1-4. Both of these factors mean that the coating Run 1-1 and Run 1-2 much more ink absorption than the floor Girder 1-4. On the basis of photographs with a scanning electron microscope (SEM) ink distributed on the floor, but a bit through the coating into the paper. Therefore, the pores more just filled in the coating Run 1-4 even with less ink, while the coverage Runs 1-1 and 1-2 for the most part not filled with less ink. Unfilled pores contribute to the scattering of light, which leads to an apparent lower density printing (more "blurred") compared to the more filled pores coated paper Run 1-4. However, at higher flow of ink (i.e., when all the pores are filled or nearly filled the entire thickness of the coating), these four specimens of the coated paper are similar to the print density. Conversely, the paper that is optimized for printing at normal settings, it will not be necessary to have a good quality print with low ink consumption.

Example 2

[0106] In the laboratory made four compositions of the coatings are shown in Table 3.

Table 3
ChemicalBrand name Floor 2-1Floor 2-2Floor 2-3Floor 2-4
Larger porous particles of the ICC for pigmentOmyajet, 36%100100100100
Starch binderEthylex 20652001005025
Total parts300200150125
Solids, %30303030

[0107] All four of the coating shown in Table 3, contain pigments with larger porous particles of the ICC in different ways, the pigment/binder in the form of leaded starch. Every 100 g of the coating was mixed by hand using a spatula until a homogeneous appearance. Then used the spiral rod to create the paper samples coated with different thickness of each the coating. Samples after coating was dried for about 1 min in the oven with convection air at a temperature of approximately 110°C. is Used, the base paper had a base weight of approximately 38 pounds per 3300 square feet and has not been gluing surface in the sizing press. The size of the squeegee and the mass of coating specified for each sample in Table 4, below. Then the samples used for printing in an inkjet printer Epson TM-S with parameters "Uncoated paper "Draft print mode", to compare the values of the print density and drying time. De facto consists of solid blocks of black, cyan, Magenta and yellow. The print density of each solid block was measured using a spectrodensitometer X-Rite model 528, as described in paragraph [0058], above, and the results are shown in Table 4.

(C)
Table 4
Coating weightThe drying timeThe print density (OD)
The attitude of the pig - pig-ment/binderFloorThe size of the squeegee(g/m2)BlackCyanMagentaYellow
1:22-1#32,0300,770,680,720,69
#7the 4.7350,770,670,690,69
#117,4300,800,670,740,72
1:12-2from2,2200,870,760,750,72
#75,225 0,860,760,730,73
#118,2200,840,750,720,72
2:12-3#32,5100,880,800,750,72
#7the 5.7100,900,810,750,71
#119,0150,900,800,750,71
4:12-4#32,750,830,770,70
#76,350,770,840,770,70
#119,950,760,770,730,66

[0108] the Results in Table 4 show that the drying time depends strongly on the used relations pigment/binder. For example, smaller amounts of binder to create a more porous structure of the coating, which gives an improved drying time.

Example 3

[0109] In the laboratory made four compositions of the coatings are shown in Table 5.

Table 5
ChemicalBrand nameRun 3-1Run 3-2Run 3-3Run 34
Larger porous particles of the ICC for pigmentOmyajet, 36%8090
Absorbing case for pigmentDOW10
Smaller particles of the ICC for pigmentAerodisp W7330N20
Smaller particles of the ICC for pigmentOmya CoverCarb 85100100
Starch binderEthylex 20402525
Latex binderDOW Latex 3130112.512.5
Binder based poly is innovage alcohol Celvol 325107
The release of dye PolyDADMACNalco 202010
Glyoxalase crosslinking agentCartabond TSI4444
Total parts151.5141.5114111
Solids, %30303030

[0110] the First two coatings (for the Runs 3-1 and 3-2) are two different coating compositions according to the modalities for the implementation of the present invention, which provide an excellent print quality, achieving excellent drying time and resistance to wet abrasion. The second two cover (for the Runs 3-3 and 3-4) are shown for comparison purposes. Every 100 g of the coating was mixed hand with this is Yu, using a spatula, until a homogeneous appearance. Then used the spiral rod to create the paper samples coated with different thickness of each coating. Samples after coating was dried for about 1 min in the oven with convection air at a temperature of approximately 110°C. is Used, the base paper had a base weight of approximately 38 pounds per 3300 square feet and has not been gluing surface in the sizing press. The size of the squeegee and the mass of coating specified for each sample in Table 6 below. Then the samples used for printing in an inkjet printer Epson TM-S with parameters "Uncoated paper "Draft print mode", to compare the values of the print density and drying time. De facto consists of solid blocks of black, cyan, Magenta and yellow. The print density of each solid block was measured using a spectrodensitometer X-Rite model 528, as described in paragraph [0058], above, and the results are shown in Table 6.

Table 6
The mass of the aircraft-partyTime up drying ChaniaResistance to wet abrasion The print density (OD)
The ratio of pigment / binderAircraft-TilleThe size of the squeegee(g/m2)(C)BlackCyanMagentaYellow
2,7:1Run 3-1#75,00Good0,790,860,780,70
2,7:1Run 3-2#97,50Good0,810,900,820,73
10:1Run 3-3#89,010Poor1,041,010,920,79
:1 Run 3-4#1415,00Poor0,930,840,900,75

[0111] the Results in Table 6 show that the first two samples coated (Beams 3-1 and 3-2), made according to the options of implementing the present invention, give a good print density for all the measured colors and excellent drying time and good resistance to wet abrasion. On the other hand, the coated samples from Runs 3-3 and 3-4, which do not contain large porous particles of the ICC pigment, but only the smaller particles of the ICC exhibit poor resistance to wet abrasion. Due to the lack of larger porous particles of the ICC in the pigment coating on the samples from Runs 3-3 and 3-4 less absorbent, and thus, the mass of the coating may need to be increased to achieve good drying time. Even when the coating weight of 9 g/m2the sample from Run 3-3 still had a bad drying time of 10 seconds. The sample from Run 3-4 with a coating weight of 15 g/m2achieves good drying time, but still has poor resistance to wet abrasion.

[0112] All documents, patents, journal articles and other m is materials, specified in this application are included in it by reference.

[0113] Although the present invention has been fully described in connection with several variants of its implementation with reference to the accompanying drawings, it should be understood that the specialists in this field can be apparent various changes and modifications. Such changes and modifications are to be understood as included within the scope of the present invention, which is defined by the attached claims, unless they violate it.

1. Product, including:
base paper having a first surface and a second surface, and the paper base has a value of HST, measured according to the method 530 pm-89 no standard TAPPI, approximately 50 seconds; and
swell under the influence of water covering the basics at least one of the first and second surfaces, which has a thickness of less than approximately 10 microns and provides receptive to ink a porous surface, and covering the basics includes:
a binder matrix for pigment coating, swelling under the influence of water, and the binder matrix comprises a water-soluble polymeric binder and a polymeric latex binder in a mass ratio of at least about 1:1, which were sewn; and
a certain amount of pigment coating, sufficient to impart values to smooth the hair surface by Parker at least about 4, at least one of the first and second surfaces, which is dispersed in a binder matrix in the mass ratio of the pigment coating binder matrix is at least about 2:1, and the pigment coating includes:
larger porous particles of the pigment coating having a particle size of more than approximately 1 μm and an effective pore volume of at least about 0.1 cm3/g, and
smaller particles of the pigment coating having a particle size of approximately 1 μm or less;
with larger porous particles of the pigment coating are in a mass ratio to the smaller pigment particles coating of at least about 0.2:1.

2. The product under item 1, characterized in that the coating fundamentals applied to the first and second surfaces.

3. The product under item 1, characterized in that the mass ratio of the pigment coating binder matrix is in the range from about 2:1 to about 10:1.

4. The product under item 3, characterized in that the mass ratio of the pigment coating binder matrix is in the range from about 3:1 to about 5:1.

5. The product under item 1, characterized in that the larger porous particles of pigment coatings include one or more of: particles of ground calcium carbonate particles precipitated calcium carbonate particles of absorbent plastic, clay particles, kaolin particles, h is Stacy calcined clay, the talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silica or zeolite particles.

6. The product under item 5, characterized in that the larger porous particles of pigment coatings include one or more of: particles of ground calcium carbonate or particles of precipitated calcium carbonate.

7. The product under item 5, characterized in that the larger porous particles of pigment coatings have an effective pore volume of at least about 0.2 cm3/year

8. The product under item 7, characterized in that the larger porous particles of pigment coatings have an effective pore volume of at least about 0.3 cm3/year

9. The product under item 1, characterized in that the smaller particles of pigment coatings include one or more of: particles of microsilica particles of aluminum oxide, the particles of ground calcium carbonate particles precipitated calcium carbonate, clay particles, kaolin particles, particles of calcined clay, the particles of bentonite compounds, preventing clay, talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silica or zeolite particles.

10. The product under item 5, wherein the smaller particles of pigment coatings include particles of silica fume.

11. The product under item 1, characterized in that the mass ratio larger porous particles of pigment pokr is party to the smaller pigment particles of the coating is at least about 1:1.

12. The article on p. 11, characterized in that the mass ratio larger porous particles of the pigment coating to the smaller pigment particles of the coating is at least about 3:1.

13. The product under item 1, characterized in that the mass ratio of water-soluble polymer binder to the polymer latex binder is in the range from about 1:1 to about 10:1

14. The product under item 13, wherein the mass ratio of water-soluble polymer binder to the polymer latex binder is in the range from about 1.5:1 to about 2.5:1

15. The product under item 1, characterized in that the water-soluble polymer binder includes one or more of: starch binders, cellulosic binders, binder based on polyvinyl alcohol binder based on polyacrylic acid binder based on poly (methacrylic acid), binders based on polyvinylene, binder based on polyacrylamide, polyester resins, binders based from sulphonated polystyrene or binder based on carboxylating polystyrene.

16. The product under item 15, wherein the water-soluble polymer binder comprises a starch binder.

17. The product under item 1, characterized in that the polymer latex binder includes about the but or more of: a styrene-butadiene rubber latexes, latex-based acrylic polymer latexes based on polyvinyl acetate, latex based on styrene and acrylic, polyurethane latexes, latex-based copolymer of starch and acrylic, starch/latex based on styrene and acrylic, polyvinyl alcohol (PVOH)/latex based on styrene and acrylic or latex-based PVOH copolymer/acrylic.

18. The product under item 17, characterized in that the polymer latex binder includes a styrene-acrylic latex binder.

19. The product under item 18, characterized in that the water-soluble polymer binder comprises a binder based leaded starch and a binder based on styrene-acrylic latex binder and on the basis of leaded starch crosslinked glyoxal.

20. The product under item 1, characterized in that the coverage of the surface has a thickness in the range from about 3 to about 8 microns.

21. The product under item 1, wherein the paper base has a value of HST approximately 40 seconds.

22. The method includes the following steps:
(a) providing a paper substrate having a first surface and a second surface, and the paper base has a value of HST, measured according to the method 530 pm-89 standard TAPPI, approximately 50 seconds; and
(b) processing at least one of the first and second surfaces of rasb Hushim under the influence of water covering the basics for getting the basics for print, moreover, the coverage of the surface has a thickness of less than approximately 10 microns and provides receptive to ink a porous surface, and covering the basics includes:
a binder matrix for pigment coating, swelling under the influence of water, and the binder matrix comprises a water-soluble polymeric binder and a polymeric latex binder in a mass ratio of at least about 1:1, which were sewn; and
a certain amount of pigment coating, sufficient to give the value of the smoothness of the surface by Parker at least about 4, at least one of the first and second surfaces, and a pigment coating dispersed in a binder matrix in the mass ratio of the pigment coating binder matrix is at least about 2:1 and a pigment coating includes:
larger porous particles of the pigment coating having a particle size of more than approximately 1 μm and an effective pore volume of at least about 0.1 cm3/g; and
smaller particles of the pigment coating having a particle size of approximately 1 μm or less;
with larger porous particles of the pigment coating are in a mass ratio to the smaller pigment particles coating of at least about 0.2:1.

23. The method according to p. 22, wherein step (b) includes the em processing the first and second surfaces coated canvas.

24. The method according to p. 22, characterized in that the mass ratio of the pigment coating binder matrix covering the basics for stage (b) is in the range from about 2:1 to about 10:1.

25. The method according to p. 24, characterized in that the mass ratio of the pigment coating binder matrix covering the basics for stage (b) is in the range from about 3:1 to about 5:1.

26. The method according to p. 22, characterized in that the larger porous pigment particles coating the basis for step (b) include one or more of: particles of ground calcium carbonate particles precipitated calcium carbonate particles of absorbent plastic, clay particles, kaolin particles, particles of calcined clay, talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silica, or zeolite particles.

27. The method according to p. 26, characterized in that the larger porous pigment particles coating the basis for step (b) include one or more of: particles of ground calcium carbonate or particles of precipitated calcium carbonate.

28. The method according to p. 26, characterized in that the larger porous pigment particles coating the basis for stage (b) have an effective pore volume of at least about 0.2 cm3/year

29. The method according to p. 28, characterized in that the larger porous particles of the pigment coating is very foundations for stage (b) have an effective pore volume of at least about 0.3 cm 3/year

30. The method according to p. 22, characterized in that the smaller pigment particles coating the basis for step (b) include one or more of: particles of microsilica particles of aluminum oxide, the particles of ground calcium carbonate particles precipitated calcium carbonate, clay particles, kaolin particles, particles of calcined clay, the particles of bentonite compounds, preventing clay, talc particles, particles of titanium dioxide, the particles of barium sulfate or particles of silicon dioxide.

31. The method according to p. 30, characterized in that the smaller pigment particles coating the basis for step (b) include particles of silica fume.

32. The method according to p. 31, characterized in that the mass ratio larger porous particles of the pigment coating to the smaller pigment particles coating the basis for stage (b) is at least about 1:1.

33. The method according to p. 32, characterized in that the mass ratio larger porous particles of the pigment coating to the smaller pigment particles coating the basis for stage (b) is at least about 3:1.

34. The method according to p. 22, characterized in that the mass ratio of water-soluble polymer binder to polymeric latex binder covering the basics for stage (b) is in the range from about 1:1 to about 10:1

35. The method according to p. 34, characterized in that the mass from osenia water-soluble polymer binder to polymeric latex binder covering the basics for stage (b) is in the range from about 1.5:1 to about 2.5:1

36. The method according to p. 22, wherein the water-soluble polymer binder coating the basis for step (b) includes one or more of: starch binders, cellulosic binders, binder based on polyvinyl alcohol binder based on polyacrylic acid binder based on poly (methacrylic acid), binders based on polyvinylene, binder based on polyacrylamide, polyester resins, binders based from sulphonated polystyrene or binder based on carboxylating polystyrene.

37. The method according to p. 36, wherein the water-soluble polymer binder coating the basis for step (b) includes a starch binder.

38. The method according to p. 22, wherein the polymer latex binder coating the basis for step (b) includes one or more of: a styrene-butadiene rubber latexes, latex-based acrylic polymer latexes based on polyvinyl acetate, latex based on styrene and acrylic, polyurethane latexes, latex-based copolymer of starch and acrylic, starch/latex based on styrene and acrylic, polyvinyl alcohol (PVOH)/latex based on styrene and acrylic latexes based on PVOH copolymer/acrylic or epoxy latex.

39. The method according to p. 38, wherein the polymer latex svyazuyushaya the basis for step (b) comprises a styrene-acrylic latex binder.

40. The method according to p. 39, wherein the water-soluble polymer binder coating the basis for step (b) includes a binder based leaded starch and a binder based on styrene-acrylic latex binder and on the basis of leaded starch crosslinked glyoxal.

41. The method according to p. 22, characterized in that the coating bases for step (b) has a thickness in the range from about 3 to about 8 microns.

42. The method includes the following steps:
(a) providing the basis for print, including:
base paper having a first surface and a second surface, and the paper base has a value of HST, measured according to the method 530 pm-89 standard TAPPI, approximately 50 seconds; and
swell under the influence of water covering the basics at least one of the first and second surfaces, which has a thickness of less than approximately 10 microns and provides receptive to ink a porous surface, and covering the basics includes:
a binder matrix for pigment coating, swelling under the influence of water, and the binder matrix comprises a water-soluble polymeric binder and a polymeric latex binder in a mass ratio of at least about 1:1, which were sewn; and
a certain amount of pigment coating, sufficient to give at least the one of the first and second surfaces of the values of the smoothness of the surface by Parker at least about 4, moreover, the pigment coating dispersed in a binder matrix mass ratio of at least about 2:1, and the pigment coating includes:
larger porous particles of the pigment coating having a particle size of more than approximately 1 μm and an effective pore volume of at least about 0.1 cm3/g; and
smaller particles of the pigment coating having a particle size of approximately 1 μm or less;
with larger porous particles of the pigment coating are in a mass ratio to the smaller pigment particles coating of at least about 0.2:1; and
(b) printing an image on at least one of the first and second surfaces on an inkjet printer with the ink usage to about 7 g/m2.

43. The method according to p. 42, characterized in that the print for stage (a) includes coupon paper, and the print image on the stage (b) is the image of the coupon.

44. The method according to p. 42, characterized in that the image is printed at step (b) with the level of use of the ink from about 0.5 to about 5 g/m2.

45. The method according to p. 44, characterized in that the image is printed at step (b) with the level of use of ink from approximately 0.5 to approximately 3 g/m2.

46. The method according to p. 42, characterized in that the mass ratio of pegma is the coating binder matrix covering the basics for stage (a) is in the range from about 2:1 to about 10:1.

47. The method according to p. 46, characterized in that the mass ratio of the pigment coating binder matrix covering the basics for stage (a) is in the range from about 3:1 to about 5:1.

48. The method according to p. 42, characterized in that the larger porous pigment particles coating the basis for step (a) include one or more of: particles of ground calcium carbonate particles precipitated calcium carbonate particles of absorbent plastic, clay particles, kaolin particles, particles of calcined clay, talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silica or zeolite particles.

49. The method according to p. 48, characterized in that the larger porous pigment particles coating the basis for step (a) include one or more of: particles of ground calcium carbonate or particles of precipitated calcium carbonate.

50. The method according to p. 48, characterized in that the larger porous pigment particles coating the basis for stage (a) have an effective pore volume of at least about 0.2 cm3/year

51. The method according to p. 50, characterized in that the larger porous pigment particles coating the basis for stage (a) have an effective pore volume of at least about 0.3 cm3/year

52. The method according to p. 48, characterized in that the smaller pigment particles coating the basis for step(a) include one or more of: particles of microsilica, the aluminium oxide particles, particles of ground calcium carbonate particles precipitated calcium carbonate, clay particles, kaolin particles, particles of calcined clay, the particles of bentonite compounds, preventing clay, talc particles, particles of titanium dioxide, the particles of barium sulfate particles of silica or zeolite particles.

53. The method according to p. 52, characterized in that the smaller pigment particles coating the basis for step (a) include particles of silica fume.

54. The method according to p. 53, characterized in that the mass ratio larger porous particles of the pigment coating to the smaller pigment particles coating the basis for stage (a) is at least about 1:1.

55. The method according to p. 54, characterized in that the mass ratio larger porous particles of the pigment coating to the smaller pigment particles coating the basis for stage (a) is at least about 3:1.

56. The method according to p. 42, characterized in that the mass ratio of water-soluble polymer binder to polymeric latex binder covering the basics for stage (a) is in the range from about 1:1 to about 10:1.

57. The method according to p. 56, characterized in that the mass ratio of water-soluble polymer binder to polymeric latex binder covering the basics for stage (a) is in the range of p is blithedale of 1.5:1 to about 2.5:1.



 

Same patents:

FIELD: paper.

SUBSTANCE: paper base contains fibers of coniferous and deciduous wood, or their mixtures, which have average length that is more or equal to 75 mcm and have filler fixed to part of these fibers, and also less than 50 wt % of fibers have average length less than 75 mcm from total weight of base. Paper mass is produced by contact of deciduous or coniferous wood fibers or their mixtures having average length of 75 mcm and having filler fixed to part of mentioned fibers, with fibers average length of which is less than 75 mcm, from total weight of base.

EFFECT: improved smoothness of paper.

20 cl, 25 dwg, 3 tbl, 3 ex

FIELD: textiles, paper.

SUBSTANCE: composition comprises a mixture of one of the two porous stable aggregates and precipitated calcium carbonate (PCC) called grade B OCC or grade C OCC, in combination with the second OCC of non-equal-faced type (OCCNT) - the pigment of fine grinding. The ratio of grade B OCC or grade C OCC and OCC of non-equal-faced type OCCNT is selected in the range from 90/10% to 10/90% by dry weight. The content of dry weight of pigments is selected in the range from 0.3% to 5.0% by dry weight of the finished paper product. Depending on the granulometry of two OCC of fine grinding the said mixture may contain a pigment and/or filler of coarser grinding. The main criterion of selection of the pigment of "coarser grinding" is that it should have a granulometry which does not have influence on the significant deviation in the number of particles smaller than 0.2 microns, preferably less than 0.3 microns, more preferably less than 0.5 micron, the most preferably less than 1 micron.

EFFECT: composition enables to eliminate the print-through through the layer of light thin paper such as newsprint and to improve the technical properties of the paper sheet.

24 cl, 4 dwg, 1 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical, paint and paper industry. Aqueous mineral materials are prepared by a) providing at least one mineral material in the form of an aqueous suspension or in dry form, b) providing at least one partially or completely lithium-neutralised water-soluble organic polymer selected from a group of homopolymers of acrylic or methacrylic acid and/or copolymers of acrylic and/or methacrylic acid with one or more acrylic, vinyl or allyl monomers, wherein the molar ratio of non-neutralised acid groups is in the range of 0-10%, c) combining the at least one partially or completely lithium-neutralised water-soluble organic polymer from step b) with at least one mineral material from step a). The obtained mineral materials or aqueous suspensions thereof are used in making paper, plastic and paint.

EFFECT: invention enables to obtain material having a stable pH, low Brookfield viscosity, which remains stable over time, and requires low content of dispersant and/or grinding enhancer.

34 cl, 13 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: dense layer of silicon dioxide is deposited on the surface of titanium dioxide particles from a gas phase, said silicon dioxide layer being doped with at least one doping element selected from a group which includes Sn, Sb, In, Y, Zn, F, Mn, Cu, Mo, Cd, Ce, W and Bi or mixtures thereof. A dense layer of silicon dioxide can be deposited on the surface of titanium dioxide from a liquid phase, said silicon dioxide layer being doped with at least one doping element selected from a group which includes Sb, In, Ge, Y, Nb, F, Mo, Ce, W and Bi or mixtures thereof.

EFFECT: invention increases photostability of titanium dioxide pigment particles.

27 cl, 18 dwg

FIELD: chemistry.

SUBSTANCE: invention can be used to produce a pigment suitable in making paper for ink-jet printing. Precipitated calcium carbonate is obtained by mixing quicklime with water in a reactor or a tank with a mixer, followed by filtration of the calcium hydroxide suspension to remove all residual contaminants and/or non-reactive quicklime. The filtered suspension is then fed into a stainless steel reactor fitted with a mixer. Temperature is kept in the range of 10-70°C, after which the suspension is fed into a carbonisation reactor, where a carbon dioxide-containing gas is bubbled through the suspension. The carbonisation step is carried out at carbonisation gas flow rate of less than 30 litres per minute per kilogram of calcium hydroxide during precipitation under normal conditions. The suspension is removed from the tank when conductivity reaches the minimum level and pH drops below 8, wherein large particles are removed through a filter. The obtained calcium carbonate can be used as a pigment.

EFFECT: invention improves the quality of ink-jet printing while reducing the cost of production of paper for ink-jet printing.

15 cl, 5 dwg, 17 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: titanium dioxide based pigment contains titanium dioxide particles in rutile form, having a coating. The coating contains aluminium phosphate, aluminium oxide, titanium oxide and silicon oxide. The particles are characterised by specific surface area, calculated according to a Brunauer-Emmet-Teller (BET) equation, of at least 15 m2/g. To obtain coated pigments, an aqueous suspension of uncoated titanium dioxide particles is prepared first, followed by addition of aluminium-containing and phosphorus-containing components. Further, while maintaining pH 4-9, an alkaline silicon-containing component and at least one pH regulating component, one of which is an acidic titanium-containing component, are then added. The formed suspension is then filtered, washed and dried and the precipitate is ground to obtain coated particles.

EFFECT: invention increases opacity of decorative paper.

22 cl, 5 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention can be used in production of tissue paper. Surface-treated natural calcium carbonate is used as filler in tissue paper products, where said calcium carbonate is a product of reaction of natural calcium carbonate with an acid and carbon dioxide. The carbon dioxide is formed in situ by treatment with the acid and/or is fed from an external source. The surface-treated natural calcium carbonate is obtained as an aqueous suspension having pH higher than 6.0, measured at 20°C.

EFFECT: invention improves softness of tissue paper products such as facial tissue, toilet paper, ornamental paper, towels, napkins or tissue paper cloths.

47 cl, 1 dwg, 5 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: titanium dioxide based pigment, containing titanium dioxide particles, has a coating layer containing aluminium phosphate and aluminium oxide, and said layer additionally contains hollow particles. To obtain said pigment, aqueous suspension of titanium dioxide is prepared first, and aluminium- and phosphorus-containing components are then added, after which hollow particles are added and pH of the suspension is brought to 4-9. Also, aqueous suspension of titanium dioxide can be obtained at pH not lower than 10, and aluminium- and phosphorus-containing components can then be added while maintaining pH of at least 10, after which hollow particles are added. Further, pH of the suspension is brought to 4-9 and an aluminium oxide coating is then applied at pH from 4 to 9.

EFFECT: invention increases opaqueness and retention of pigment when making decorative paper.

22 cl, 1 dwg, 1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. The method of producing jointly ground calcium carbonate material, which contains ground calcium carbonate (GCC) and precipitated calcium carbonate (PCC) with coefficient of curvature at least equal to approximately 30, preferably at least approximately 40 and even more preferably at least approximately 45, comprises the following steps: a) obtaining at least one calcium carbonate material, optionally, in form of an aqueous suspension; b) combined grinding of GCC and PCC, optionally, with at least another mineral material which is selected from talc, clay, Al2O3, TiO2 or mixtures thereof; c) optional sieving and/or concentration of the jointly ground calcium carbonate obtained after step (b); d) optional drying of the jointly ground calcium carbonate material obtained after step (b) or (c). The coefficient of curvature is defined as d30/d70×100, where d30 and d70 denote equivalent spherical diameters, relative which 30 wt % and 70 wt % particles have a smaller size.

EFFECT: invention enables to improve optical properties of enamel paper and exclude the PCC deagglomeration step.

40 cl, 2 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. The method of producing jointly ground calcium carbonate material, which contains ground calcium carbonate (GCC) material and precipitated calcium carbonate (PCC) comprises the following steps: a) obtaining at least one calcium carbonate material, optionally, in form of an aqueous suspension; b) combined grinding of GCC and PCC, optionally, with at least another mineral material which is selected from talc, clay, Al2O3, TiO2 or mixtures thereof; c) optional sieving and/or concentration of the jointly ground calcium carbonate obtained at step (b); d) optional drying of the jointly ground calcium carbonate material obtained at step (b) or (c). The fraction of particles of the obtained material with size smaller than 1 mcm is greater than 80%, preferably greater than 85%, more preferably greater than 90% and even more preferably greater than 95%. BET specific surface area is less than 25 m2/g.

EFFECT: invention enables to increase lustre of enamel paper.

44 cl, 2 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: suspension containing calcium carbonate is obtained by adding one or more zirconium compounds and possibly one or more other additives which do not contain phosphate, acting as a dispersant and/or an additive which assists in grinding. Calcium carbonate in dry form and/or in form of an aqueous dispersion or filtered residue is added an aqueous suspension and/or aqueous emulsion and/or aqueous solution containing one or more zirconium compounds. The zirconium compounds used is ammonium zirconium carbonate or calcium zirconium carbonate or mixture thereof.

EFFECT: invention enables to avoid the use of phosphate dispersants when preparing stable aqueous suspensions of calcium carbonate and increases content of solid substance in the suspension.

17 cl, 22 ex

FIELD: printing.

SUBSTANCE: invention relates to a method of manufacturing a smooth or ultra-smooth sheet material for overprinting. It comprises the following steps: manufacturing a multilayer structure consisting of a lower layer of plastic film, an intermediate anti-adhesive layer, and also an outer layer for overprinting, gluing one side of the substrate or the upper side of the layer for overprinting, placement of the substrate on the layer for overprinting with their laminating followed by removal of the plastic film from the layer for overprinting, and this layer for overprinting forms on the sheet of smooth or ultra-smooth side.

EFFECT: invention provides creation of an ultra-smooth sheet material suitable for overprinting and suitable for complete recycling, when possible.

25 cl, 6 dwg, 8 ex

Information carrier // 2533821

FIELD: chemistry.

SUBSTANCE: invention relates to information carriers. Claimed is an information carrier, successively including a substrate, selected from a polymer-covered paper, synthetic paper and plastic films, the first ink-receiving layer and the second ink-receiving layer, with the ink-receiving layer containing at least one substance, selected from aluminium oxide, aluminium oxide hydrate and highly dispersive silicon oxide, polyvinyl alcohol and boric acid, with a weight ratio of the boric acid and polyvinyl alcohol content in the first ink-receiving layer constituting 2.0 wt % or more and 7.9 wt % or less, with the second ink-receiving layer containing highly-dispersive silicon dioxide, polyvinyl alcohol and boric acid, and a weight ratio of the boric acid and polyvinyl alcohol content in the second ink-receiving layer constitutes 10.0 wt % or more and 30.0 wt % or less.

EFFECT: claimed carrier makes it possible to prevent cracking after the application of ink-receiving layers, possesses the high ink-absorbing ability and a resistance to cracking in bending.

6 cl, 4 tbl, 68 ex

Data storage device // 2532419

FIELD: printing.

SUBSTANCE: data storage device comprises a substrate and at least one ink receiving layer. The first ink receiving layer, which represents at least one ink receiving layer, comprises inorganic particles having an average primary particle size of 1 mcm or less, and the inorganic particles coated with the metal oxide. The inorganic particles covered with the metal oxide have an average primary particle size of 15.0 mcm or more. When the maximum value of the FLOP data storage device is represented as FLOPMax and the minimum value of FLOP is represented as FLOPMin, the FLOPMin is 2.5 or more and the value FLOPMin/FLOPMax is 0.80 or more and 1.00 or less.

EFFECT: proposed data storage device has a high degree of pearl lustre.

8 cl, 2 dwg, 3 tbl

FIELD: printing.

SUBSTANCE: reversible thermosensitive medium for printing, comprising a base, a reversible thermosensitive layer for printing, provided on the base, and the antistatic layer, at that the antistatic layer is provided on at least a the reversible thermosensitive layer for printing or the substrate surface opposite to its surface on which the reversible thermosensitive layer for printing is provided, the antistatic layer comprises spherical fillers and a curable electroconductive polymer, and the spherical fillers satisfy the following expression (1): 4 ≤ the average diameter of particles of the spherical fillers/thickness of the antistatic layer ≤ 6… (1).

EFFECT: invention has improved antistatic properties.

12 cl, 15 dwg

Tool marking // 2530908

FIELD: process engineering.

SUBSTANCE: invention relates to method of tools marking. This method comprises provision of tool, its thermal treatment, provision of tool primer ply, printing on tool and application of electrolytic coat thereon. For printing of pattern at primer ply, a layer of dye is used. Layer of dye includes at least one ID element. Said ID element includes at least one ID zone with dye, background section around ID zone with no dye, and boundary line located around background section with dye. Electrolytic coating is applied to section without ID zone and boundary line. Note here that there a sharp contrast between coating and dye ply.

EFFECT: clear and stable mark.

14 cl, 11 dwg

Recording medium // 2526007

FIELD: physics, computer engineering.

SUBSTANCE: recording medium successively includes a substrate, a first ink-receiving layer and a second ink-receiving layer, wherein content of boric acid in the first ink-receiving layer is 2.0 wt % or more and 7.0 wt % or less with respect to content of polyvinyl alcohol in the first ink-receiving layer, and content of boric acid in the second ink-receiving layer is 10.0 wt % or more and 30.0 wt % or less with respect to content of polyvinyl alcohol in the second ink-receiving layer; the outermost surface layer of the recording medium has particle content of 0.5 wt % or more and 5.0 wt % or less with respect to content of an inorganic pigment, said particles having secondary particle average size of 1.0 mcm or more and 20.0 mcm or less.

EFFECT: disclosed recording medium reduces cracking when bent.

5 cl, 6 tbl

FIELD: chemistry.

SUBSTANCE: method of instrument marking includes formation of an instrument 10, performing a depressed marking 15 in the instrument 10, quenching of the instrument 10, coloration of the instrument 10 in order to create a colour layer 20 on the instrument 10 in the depressed marking 15 and near it, cleaning the instrument 10 from excess of the colorant, overflowing the depressed marking 15, coloration of the instrument 10 into black colour to create a coloured black layer 40 on the instrument 10, except for the depressed marking 15, and painting the instrument 10 to form a transparent layer of paint 50 on the instrument to create luster and prevent rust.

EFFECT: marking is clear, and the applied coating protects the instrument from rust.

9 cl, 8 dwg

FIELD: printing.

SUBSTANCE: present invention relates to a sheet for printing having improved drying time of the image. The sheet for printing comprises a substrate comprising lignocellulosic fibres, and at least 0.02 g/m2 of a water soluble divalent metal salt which is applied by a gluing press. The test value of gluing Hercules ("HST") of the substrate is about from 3 seconds to 300 seconds. The HST value and the amount of divalent metal salt is selected so that the sheet for printing has a percentage of ink transfer ("IT%") equal or less than about 60.

EFFECT: proposed sheet for printing provides improved drying time of the image.

27 cl, 6 dwg, 10 tbl, 4 ex

FIELD: printing.

SUBSTANCE: invention relates to recording sheets used in printing processes. The recording sheet comprises a substrate of the web of cellulosic fibres and the sizing composition. The sizing composition comprises a binder and a divalent metal salt. The said salt in a concentration of at least 51% of the total concentration and not less than 2500 parts per million is located at a distance within 25% of the total substrate thickness from at least one surface of the said substrate. At that the recording sheet has Qtotal as a measure of the amount of the sizing agent in the transition from the outer edges towards the middle of the sheet in cross-section of less than 0.5. Also a method of production of the recording sheet is described.

EFFECT: said substrate and the sizing agent interact with formation of the I-shaped structure of the recording sheet which provides an optical density of black printing of at least 1,15.

20 cl, 15 dwg, 2 tbl, 10 ex

FIELD: printing.

SUBSTANCE: invention relates to a method of manufacturing a security or valuable document, which includes the following steps: B) multilayer material is produced, which comprises a paper substrate, a masking layer provided on the paper substrate in the masking area, and marking substance modified by laser radiation, provided in the marked area, at that the marked area covers the masking area, and L) the multilayer material in the marked area is subjected to laser action in order to create the negative signs in the masking area simultaneously in register and discolored signs on unmasked areas of the marked area. At that before performing the step L) on the masking layer at least in the marked area the recesses are made in the form of patterns, signs or a code.

EFFECT: invention provides a high degree of protection against forgery.

25 cl, 22 dwg

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