Method and device for the transfer of material from the bulk environment
(57) Abstract:The method of applying material to the surface, in which three-dimensional environment (e.g., ink) in the form of compounds dispersed insoluble material (e.g., ink particles and supportive environment is fed into the cell. The movement of insoluble material in the surround environment is in the direction of the transmitting holes inside the cell, concentrating so insoluble material inside the surround environment. Then, the insoluble material is removed from the bulk environment through the hole and is applied to the surface. These signs will provide simplification and cost reduction of this method. 4 C. and 10 C.p. f-crystals, 23 ill. The present invention relates to a method of transferring material, preferably particles of the bulk medium, preferably a liquid, and more particularly to a method, which can be used for printing.There are various filtration and separation technology using electrophoresis and similar processes.Patent GB-A-1186184 discloses a separating device, which combines electrophoresis and flow rate for separation of one or more components that uniformly or h is or fully share from each other and/or from the liquid or liquids. The fluid flows in the space between the inner stationary cylinder and the outer rotating cylinder in the presence of an electric field.US-A-3909383 discloses a cleaning process, which uses known technology electrophoresis for cleaning contaminants from liquids, which is used to produce images in the systems electrophotographic printing that use liquid toners. The purified liquid can be used again, as the filtered particles are removed for subsequent application.Patent EP-O-0320709 discloses a method of separation based on electrophoresis, such as the above mentioned methods.WO-A-8809210 relates to a device in which instead of using electrophoresis as a means of cleaning liquid containing particles of various types, can be used ultrasound to guide the particles along the flowing fluid so that the particles could be collected.GB-A-2098498 relates to techniques for separation, which also uses ultrasound to reject particles in the flowing fluid to clean it. In this publication applies to the way that causes the drift of particles in an ultrasonic field that causes particles -4011157 object of the invention is the removal or filtering specific component of the contaminated fluid, so that the treated liquid can be used again. The method uses the well-known ultrasonic atomization technology to separate liquid ink from specific pollution. Purified liquid ink (available from inclusions) are transferred back to the print station, while the solid contamination is collected in containers for removal.WO-A-9320927 discloses a method that uses a well-known phenomenon of dielectrophoresis for separating particles suspended in the fluid flowing through the cell. It can be assumed that this type of system can be used for particle concentration, but the application is not filed.EP-A-0307940 discloses the use of laser for separating biological particles.FR-A-2232192 discloses the use of an alternating magnetic or electric field to save ink containing magnetic particles in a suitable form, i.e., to prevent them from hardening, followed by the application of the applied DC field to extract liquid from the container. In the patent description also says that with the help of the mentioned electrodes or magnets extracted liquid can be concentrated.CH-A-562631 run acceptor threads as well as the electric field. Field Flow Fractionation - JC Goodinegs Chemical Engineering News, Vol. 66, No. 41, 10 October 1988 summarizes the most technical proposals listed in the above mentioned patent descriptions.Containing particles of the fluid flows in the presence of an external field or gradient fields, such as: electric or magnetic field, or temperature gradient, which is orthogonal to the direction of flow. The different fractions are deposited in various areas of fluid flow.All of the above methods based on known effects, and they are already being used for separation of dispersed particles from a fluid, for example, for cleaning.US-A-4717926 and US-A-4928125 describe printing technique, using respectively the electric and magnetic fields.The object of the present invention is the increase in the concentration of insoluble suspended liquid particles in the transmission and the subsequent transfer of the concentrate volume on the surface, for example, to print on the surface.In PCT/AU 92/00665 disclosed a method in which discrete agglomerates of particles fed from containing these fluid particles, and the electric field created in the place of eruption, ensures frequent material to the surface, includes submission to the transmitting station surround environment in the form of a composition dispersed insoluble material and supportive environment and the deposition of material on the surface. This known solution can serve as the closest analogue to the invention in the part of the method of applying material to the surface, and printing method.In US-A-5144340 described device transmit material that contains fluid-filled cell having an insulating wall, an inlet for liquid transmitting aperture and two electrodes, one of which is located in the transmitting hole, also in this patent disclosed a printer that includes a transmission device material.The known solution is the closest analog of the invention in side transfer device material and printer.The present invention is associated with the development of the concepts in the known solutions. In the known method, in which the particles in the fluid delivered to the site selection due to the flow of fluid toward and then away from the place of allocation of particles. A current flowing to the place of discharge, contains particles that are subject to collection in the site selection before to be deleted therefrom, and a current flowing from the separation of the STS, which significantly increases the cost of the system compared to the head of the selection.The present invention, among other things, is to simplify and reduce the cost of this method and system.Therefore, in accordance with the present invention provides a method of applying material to the surface, which includes:
submission to the transmitting station surround environment in the form of a composition dispersed insoluble material and supportive environment and the deposition of material on the surface;
ensuring movement of insoluble material within the bulk medium in the direction of the designated transfer inside the transmitting station and of the concentration of insoluble material within the bulk medium in the transmission; and
subsequent removal of material from the concentrate inside of the surround environment in the transmission, followed by the deposition of material on the surface.According to further aspect of the invention, the method provides a flow of insoluble material in the surround environment separately in relation to supporting the environment in which the material is removed from the concentrate in a place that contains a free boundary objemnee in relation to supporting the environment, and the motion of particles inside the volume of the environment carried out on the basis of electrophoresis; insoluble material has a dielectric constant that is different from the constants supportive environment, while providing the movement and concentration of insoluble material using an inhomogeneous electric field (dielectrophoresis); the insoluble material has a density different from the density supportive environment, and movement and create concentration by sedimentation, flotation or centrifugation; the insoluble material has a negligible dipole moment and moves and concentrated by supplying a non-uniform magnetic fields.According to the next object of the invention is a method of printing, which uses a method of applying material to the surface in accordance with any of the above aspects of the invention, with three-dimensional environment contains ink and colored particles.In addition, in this method, particles are removed from the bulk environment through a nozzle or other opening; and the particles are removed from the bulk environment in place that contains one metal cone-shaped needle probe, converging at the end of the tube, tapering hollow body and met rastvorimym material.According to another object of the invention, the transmission device material contains fluid-filled cell having an insulating wall, an inlet for liquid transmitting aperture and two electrodes, one of which is located in the transmitting hole, it additionally has an outlet for the liquid, the carrier particles are transferred onto the surface of the material, while the first electrode partially covering the cell, and the second is to extract particles from the liquid.In addition, in accordance with the invention provides a printer comprising a transmission device material made of the above.Thus, the method can be used to maintain during operation, a certain level of concentration of insoluble material in the environment.The particle "floats" inside the volume of the medium, preferably a liquid, so it can be atomized with the flow volume of the medium containing the particles; this makes it possible to avoid the complexities and costs associated with pumps, etc. In such cases, three-dimensional environment acts as a support or carrier for the particles, but not as a transmitting medium.The invention also includes the apparatus of the liquid; the first electrode at least partially covering the cell; the second ejection electrode is located in the hole. The apparatus may form part of the printer.One of the specific applications of the method of the invention is in the field of conventional drum for Electrophotography feed tinting material on the drum from its environment, serving as a support or carrier. In conventional processes reduce the concentration of toner within the storage media is performed on the entire volume of the mixture. When the concentration falls below a certain level, toner cartridge or equivalent must be replaced, even if the toner particles present in the mixture. The present invention is able to use a greater percentage of the toner due to the maintenance of selective concentration in place of the transfer of the toner on the drum.In some cases, this method of the invention can be combined with the method, which includes the volumetric flow of the medium. For example, in some printing techniques may be required volumetric flow of the medium in the tank or container for refill.To create a concentration of particles can be used in different transport mechanisms, some of which are the structure, also described with reference to the drawings 13-20. In the drawings shows:
Fig. 1 illustrates the electrophoretic mechanism;
Fig. 2 illustrates dielectrophoresis mechanism;
Fig. 3 illustrates the method including sedimentation and flotation;
Fig. 4 illustrates a method of acoustically guided particle;
Fig. 5 shows a method of optically guided particle;
Fig. 6 shows the method of centrifugation for the motion of particles inside the volume supportive environment or media;
Fig, 7 shows how the motion of particles using magnetophoresis;
Fig. 8 shows the method of using the geometry of the specific volumetric flow;
Fig. 9 and 10 show a method involving the use of imploding membranes;
Fig. 11 illustrates a manner similar to the method of Fig. 9 and 10, but using the membrane placed on a movable grid;
Fig. 12 shows the way in which envisages continued support of the variance;
Fig. 13 diagramme illustrates the cell printhead in terms of vectors flows;
Fig. 14 and 15A illustrates in more detail the same cell in the incision;
Fig. 16 shows the trajectory of the ink particles on the cut printhead electrostatic damage to the module and 19 demonstrate the increase in ejection electrode to the printhead, Fig. 19 shows the landing electrode;
Fig. 20 shows the placement of multielectrode Assembly for an alternative cell design;
Fig. 21 is a diagram illustrating the principle of the motion of particles during electrophoresis;
Fig. 22 is a diagram illustrating the principle of the motion of particles when dielectrophoresis;
Fig. 23 is a diagram illustrating a conceptual model of the printhead, which has electrophoretic concentration.In Fig. 1 shows the process of electrophoresis, in which charged particles 11 contained in the liquid or gel-like environment, are moving in the electrostatic field E applied to the electrodes 13 and 14 by means of a battery or DC source 15. The arrows on the particles 11 indicate their direction of movement along the lines of e in an electric field E also shows the concentration of particles, which occurs either when a collision with an obstacle or when moving along the force lines of the electric field. Methods based on electrophoresis, corresponding to the invention include variants in which the particles move through a sequence of electrodes along the channel and switch in series with a suitable temporary which is significantly different from the constant fluid particles 22, feel the force in an inhomogeneous electric field E that occur between the electrodes 23 and 24 due to the constant current source 25. The field induces dipoles in the particles 21 that under the influence of an inhomogeneous electric field causes the particles motion in the direction of increasing field lines (electrode 24) (regardless of the direction of the field). The increase in concentration is due to the increase in field strength as the converging field lines e or when the particles encounter the obstacle.In the method of Fig. 3 particles 31 having a density different from the density of the carrier fluid 32, are collected in vessel 36 and subjected to the action of the Archimedean force in the gravitational field of q that results in the deposition (as shown), or by flotation. Excessive concentration occurs when particles 31 have come up against a barrier, usually either the bottom of the container 36, or the surface of the liquid 37. Then the particles are removed through the opening 38 by the action of electrostatic forces, as described above.Can be implemented in a more complex process of increasing concentration when you allow particles to settle (or float) in the presence of other carefully selected species particles. In which m is a local increase in the concentration of those species of particles, which have greater precipitation.The method of Fig. 4 shows how the acoustic excitation, preferably ultrasonic frequencies generated, for example, the piezoelectric transducer 40 is transmitted through the bulk medium 42 and is able to exert pressure on the particles 41, resulting in their movement, as shown in the drawing. Particles can be collected at the border or in some places depending on the nature of the acoustic field, but in this case they are going in the funnel 43; end openings 44 are removed by the above method.Intense sound field can be used to direct the particles to the place of eruption or by creating a standing wave having a node from the back seat of the eruption.The light beam 50 passing through shown in Fig. 5 system, typically a laser beam of sufficiently high energy can cause the force acting on the particle 51, and not on the carrier fluid 52, if it is transparent to light. The amplitude of the force depends on the light reflected from particles or adsorbed. Concentration occurs when the particles collide with the barrier or when the beam 53 has a converging geometry as singing execution particles from flowing in the direction of the arrow F to the place of eruption.Particles, whose density differs from the density of the carrier fluid will be deposited or come under the action of a centrifuge, as if they were in the field of gravity. Concentration occurs for the same reasons. However, at high speeds, the inertia of the particles may also lead to motion relative to the fluid.As shown in Fig. 6, particles 61 lower density than the carrier fluid 62 may be concentrated on the center line of a rotating liquid, and extracted as needed through the hole 62 in the direction of the arrow F.As shown in Fig. 7, magnetophones occurs when particles 71 have a magnetic dipole moment. Particles 71 will line up and move in an inhomogeneous magnetic field H, is quite similar to the movement when dielectrophoresis. The system requires appropriate configuration of the magnetic field H generated by core coils 73 and 74 which surround the container 75, the eruption of particles 76 is near the pole.It is known that a certain geometry of the volumetric flow can lead to the accumulation of suspended particles, when the Reynolds number of these particles is not small value, so that the phenomenon is 83, where it was found that the particles 81 concentrate within the bulk medium in the ring at some distance between the Central line and the wall. Thus, the particles are concentrated along the flow direction F. Another simple example (not shown) is a point of stagnation of flow in which particles accumulate around the stagnation point where the flow velocity is close to zero (an example is the Lee side of obstacles).Fig. 9 and 10 illustrate the method of concentration, in which the container 90 is imploding translucent bag 91, which divides a concentrated blend of particles from 93 lean mixture 94, as particles are removed from the site of injection 92 one of the methods above.Fig. 11 illustrates such a method in which a translucent membrane 101 is placed on the grid 102, which is able to move downward, causing the cleaning solution 104 and concentrating the solution 105, inside the tank 100 as particles extracted at the point 103 in accordance with one of methods described above.Fig. 12 shows the way in which the particles are concentrated within a volume of liquid, as the solution flows through the path through the tank 110 with the Central trubka the t tank, the particles are concentrated in the volume of the liquid at the end of the porous part of the feed tube and removed for drainage from the eruption 114, in accordance with one of the above techniques. Purified reverse flow appears in the field 115.Fig. from 13 to 16 shows the printhead, which integrates the principles of the present invention, using the method of electrophoresis (as thoroughly described above in connection with Fig. 1) for the concentration of insoluble ink particles. Shown and described head for printing involves the printing of a single point on the surface.The print head 120, the inside has a triangular shape, provided with a cavity 121, which under pressure (for example, using a pump - not shown) serves ink 122 (the type of which will be described later) via the input 123. To ensure the continuity of action, provides an output 124, so as to ensure the distribution of the vectors of the flow, as shown in Fig. 13 arrows 125. Given cell has external dimensions: 10 mm wide and 13.3 mm and a thickness of 6 mmCell 120 has a PEEK (poly ether ether ketone) housing 126, which, as seen in cross section in Fig. 14 and 15, has the opposite wedge-shaped jambs of the year 14A and 15A illustrate, respectively, the details of the openings 128 and an ink meniscus 133, which is formed here in the process. From all sides the cell is closed plate side walls 129, 130, which form part of the housing 126. The housing 126 may form part of a larger set of cells secured by fastening clamps or the like. They are not shown, as it does not affect the principles of action and not needed in the present context. Located around the outer side of the cell 121 of the thin plate-like electrode 131 is formed from a piece of stainless steel 132, shown in Fig. 17. The electrode 131 surrounds the narrower side walls with posts 127 and part of the plastic base body 126, in addition, it has a lug or tongue 135, which is placed in the cavity 121 to ensure contact with the ink 122. The electrode 131 (known as electrophoretic electrode) and the shoals 127 is formed so that during operation of the component vectors of the electric field E in the fluid directed insoluble ink particles away from the walls of the cell. In other words, E*n > 0 almost along the entire perimeter of the ink cells 120, where E is the vector electric field and n is the normal to the surface, uklad and, otherwise, it will change the electric field in the cell. Fig. 16 shows the trajectory described ink particles in the electrostatic model of the cross section of the cell with the external extraction electrode. The viscosity of the liquid and the charge on the particles is such that particles follow almost along the lines of the field as it can be seen from the drawings.Inside the hole 128 is extracting electrode 134 (alternatively, to print many points can be configured with a set of electrodes 134' in a linear sequence, as shown in Fig. 20). The electrode 134 is made of electroforming Nickel of a thickness of 15 μm, with a cross section of typical electroforming parts. One side of the electrode is flat and the other is a bit stretched. Fig. 18, 18A (in more detail) and 19 show the extraction electrode 134 and its specific location within the cell 120. Retrieves the electrode 134 is located on the front standing holder 129, which is connected to the side wall 129 of the housing 126 and the electrode 134 protrudes from the hole 128 at a distance of 50 to 100 μm (see also Fig. 14A). Electrical connection is made through wire 138 which is held in the cavity 121 through the opening 137 in Boko is matichesky to close the opening 137.Insoluble particles acquire a charge through the action of the charging particles of the agent, which ionizes in solution, resulting insoluble particles acquire a charge and form different ions of equal and opposite charge. This mechanism is well known in the field of liquid toners, for example, photocopy machines and displays based on electrophoresis.Next will be described the printhead. When not printing, the appropriate charge on the electrophoretic electrode 131 and the extraction electrode (electrophoretic electrode has a potential of from 1.2 to 2.0 kV) cause the ink particles move under the action of electrophoresis to the extraction electrode. Since the electrophoretic electrode 131 is in contact with the ink inside the cell, through the contact 135, the potential of the ink when the equilibrium condition is the same as for electrophoretic electrode 131. This will lead to a small concentration of particles near the extraction electrode 134. When extracting pulse (ripple range from 200 V to 1.5 kV; duration from 50 to 20 μs, and may have a frequency from 1 to 10 kHz) is applied to the extracting electrode 134, the particles of ink ejected (for example, as described in PCT/ AU 92/00665) on the balance is disturbed, which leads to the continuous movement of the particles to keep clean around the extraction electrode and to keep the concentration.Ink is fed to the cell through the inlet 123 in the side plate 129 to ensure a constant supply of ink particles in the cell in an area of low concentration between inlet and outlet 124 through the particles can be concentrated in the area around the extraction electrode 134. The flow velocity in a region with a high concentration around the extraction electrode is low, so doing so that particles that were concentrated under the action of the field, not subsequently was washed out due to the volume of fluid flow in these areas. In practice, the iontophoresis electrode 131 is held at a positive (in this case) a higher potential than the time-averaged potential of the extraction electrode 134.Used ink preferably belong to the ink described in PCT/ AU 94/00357, i.e. containing a carrier liquid having a high electrical resistance (e.g., >109Omsm) and insoluble coloring particles suspended within the carrier. Soluble or partially soluble resin or the like can be introduced into rest included modifying the charge agents for maintenance of the charging process.The following description is part of a research reference, prepared by the inventors in connection with aspects of the invention, and together with Fig. 21 and 23 describes methods of transportation of particles.Transportation of particles.The mechanism, which is a combination of the transportation process, which concentrates the inclusion in the carrier liquid, and the separation process (which may be the extraction process), which transmits the inclusion of the carrier fluid. This application outlines the modelling work that has been carried out for the processes of particle transfer.A simple model of the particle stream.A particle moving along the surface of the liquid, experiencing the effect of reduced friction compared to the particle in the fluid volume. The friction force depends on the interaction of the particles with the liquid surface. The magnitude of the effective viscosity is usually not known, although we can assume that it has an intermediate value between the viscosity of the liquid and the viscosity of the air. To confirm that the proposed model of the transport process is lawful, a comparison was made of the particle motion along the outer side of the electrode with the observed is of a finite field element. Was built interpolation function of the distribution of tangential potential for Etangentialdepending on the distance along the electrode. Expression of the motion of the particle is:
< / BR>x(0)=xstart< / BR>< / BR>where is the effective viscosity, acquired the particles, and x(t) is the position of a particle along the surface of the liquid at time t. The equation was solved numerically for values of viscosity lying between the viscosity of the carrier fluid and the viscosity of the air, effectively equal to zero. These numerical experiments confirmed that in the bulk liquid velocities of particles are small enough to create a significant transfer of particles. On the surface, where the values of effective viscosity lower velocities derived from the model were much closer to the rates observed in practice. This partly confirms that this model of the free surface of the transfer is correct.The above discussion shows how a specific method of transmission, which occurs on the free surface. This method is not attractive for practical product, in particular for office equipment, need to be found alternative methods. These methods discuss Araunah particles under the action of applied electric field. Field acts on a portable particle charge, creating a force that causes the particles to move through a balanced environment, as shown in Fig. 21, the Speed with which they move, is characterized by their mobility and depends on their discharge, the radius and the viscosity of the liquid.This force is of fundamental importance near the point of eruption, as the electric force acting on a particle is the fundamental principle for the separation of suspended liquid.The action of this force on the particles can cause, if the physical boundaries of the fluid is let, three-dimensional motion in the liquid. This is because the fluid due to viscosity interacts with the particles, which corresponds to the transmission of motion from the particles to the liquid, and is equivalent to the action on the particle strength triple. Acting on a distributed set of particles, this will create a force acting on the fluid volume. It will be shown that this movement may be useful as a means of transmission volume.Gradient diffusion.If a set of particles unevenly distributed in space and time, then after some time heterogeneity will flatten. In the direction of the concentration gradient occurs FCP is m important enough, because removal of the particles creates concentration gradients, which can diffuse particles. However, in practice this effect is small and was not considered in the main part of the subsequent process is executed.Dielectrophoresis.Inhomogeneous in space the electric field creates a force acting on the particle, which is different from its surroundings dielectric constant. This occurs even when the particle does not carry any slight electrical charge. This force arises due to the fact that the field induces on opposite ends of the particles are equal in value and opposite in sign to the charge, thereby creating an electric dipole. However, due to the heterogeneity of the field, it interacts more strongly with the charge on one side than on the other side, thus creating a weak force. This is illustrated in Fig. 22.As a rule, if the particle is charged, the dielectric strength is much weaker than the forces due to electrophoresis, acting on the charge in the same electric field. However, when the field gradient is high enough, as near the point of extraction, the effect of dielectrophoresis can be significant. For bolshinstvosvoih field. Thus, near the point of extraction dielectrophoresis force acts against the electrophoretic force.A simple model of one-dimensional electrophoretic transfer.Fig. 23 shows a conceptual model of the head, which is replenished by electrophoresis. Particles are removed from the point of extraction at a rate that is determined by the requirements to printing speed. The number of extracted particles should be increased at the expense of the particles contained in the volume of the ink container. In any position, x, along the head identified the following qualitative characteristics: the cross-sectional area a(x), the concentration of particles k(x), the average particle radius r(x), velocity V(x), viscosity (x), the electric field E(x).In equilibrium, the electric field required to maintain the flow of particles takes the form
< / BR>where Q/M(x) is the ratio of charge to mass of the particles, d is the diameter of the recoverable drops, the other characteristics defined above. Thus, the electric field required for the transport of particles can be reduced through appropriate design of the mobility of the particles and using the variation of the cross section of a liquid tank, Mobile particles can be transferred more rapidly the La transmission of a larger number of particles per unit length of the tank. The decrease in electrophoretic field is desirable, as it reduces the magnitude of the total field along the length of the tank and, therefore, the maximum voltage applied on the head.In Fig. 23 shows the container with ink 201 and the point of extraction 202 in the coordinate system x-y. In the drawing the particles to be removed through the point 202, has the parameters: fo= frequency of removal of particles, ro= radius of the removed particles, ko= concentration of the removed particles.The speed of the removed particles is:
4/3r3okofo.about 1. The method of applying a material on a surface, comprising applying to the transmitting station surround environment in the form of a composition dispersed insoluble material and supportive environment and the deposition of material on a surface, characterized in that it also includes ensuring movement of insoluble material within the bulk medium in the direction of the designated transfer inside the transmitting station and of the concentration of insoluble material within the bulk medium in the transmission and subsequent removal of material from areas of concentration within the bulk medium in the transmission, followed by the deposition of material on the surface.2. Easdale in relation to supporting the environment.3. The method according to p. 1, characterized in that the material removed from the concentrate in a place that contains the free border of the surround environment to another environment.4. The method according to any of the preceding paragraphs, characterized in that the insoluble material is in the form of particles.5. The method according to any of paragraphs.1 to 4, characterized in that the insoluble material is charged in relation to supporting the environment, and the motion of particles inside the volume of the environment carried out on the basis of electrophoresis.6. The method according to any of paragraphs.1 to 4, characterized in that the insoluble material has a dielectric constant that is different from the constants supportive environment, while providing the movement and concentration of insoluble material using an inhomogeneous electric field (dielectrophoresis).7. The method according to any of paragraphs.1 to 4, characterized in that the insoluble material has a density different from the density supportive environment, and movement and create concentration by sedimentation, flotation or centrifugation.8. The method according to any of paragraphs.1 to 4, characterized in that the insoluble material has a negligible dipole moment and moves and concentrated by supplying Neogene material on the surface in accordance with any of the preceding paragraphs, this volume environment contains ink and colored particles.10. The method according to any of the preceding paragraphs, characterized in that the particles are removed from the bulk environment through a nozzle or other opening.11. The method according to any of the preceding paragraphs, characterized in that the particles are removed from the bulk environment in place that contains one metal cone-shaped needle probe, converging on a cone tube, tapering hollow body and tapering metal hard case.12. The method according to any of paragraphs.1 - 11, characterized in that the part of the supportive environment removed from the surround environment together with insoluble material.13. Device transmit material that contains fluid-filled cell having an insulating wall, an inlet for liquid transmitting aperture and two electrodes, one of which is located in the transmitting hole, characterized in that it additionally has an outlet for the liquid, the carrier particles are transferred onto the surface of the material, while the first electrode partially covering the cell, and the second is to extract particles from the liquid.14. The printer, characterized in that it includes a transmission device material, you
FIELD: printing devices.
SUBSTANCE: device has feeding section, meant for feeding paper for printing one sheet after another separately, and transporting route, passing, actually, linearly for transporting printed data carrier, having high rigidity. A portion of feeding section is overlapped with transporting route in vertical transverse direction, but does not in direction, perpendicular to direction of transporting of carrier of printed information.
EFFECT: simplified construction, lower costs, higher reliability, broader functional capabilities.
18 cl, 22 dwg
FIELD: printing materials.
SUBSTANCE: invention relates to printing ink containing first colorant and second colorant, at least one of the colorants including fluorescent color. First and second colorants are located separately on a printing medium while printing ink ensure obtaining printed image with improved fluorescent properties. Invention further relates to printed image and a method of forming printed image utilizing such ink. Invention solves the problem of reducing fluorescence and improving fluorescent properties by way of separating fluorescence region and colored region as well as by way of formation of area on printing medium wherein points of coagulated first colorant are spread in the region of fixed second colorant so that absorption of fluorescent emission energy from fluorescent colorant is considerably reduced by coexisting colorant involving corresponding technologies. The latter are based on a novel technical conception residing in improvement of characteristics of fluorescent emission of a second colorant used in printing ink including a first fluorescent colorant, which, being excited at specified excitation wavelength, fluoresces within specified wavelength range.
EFFECT: improved fluorescent properties of printed image.
15 cl, 31 dwg, 4 tbl, 33 ex
FIELD: image printing devices and jet printing devices for printing by means of discharging ink from printing instrument.
SUBSTANCE: printing device for printing with printing instrument contains carriage, to which with possible extraction aforementioned printing instrument is connected and which carriage may move along the sheet for printing; and holding base, adapted for guiding printing instrument into carriage and holding it, when the carriage is stopped in replacement position, where printing instrument may be attached to the carriage or detached from it. Resulting jet printing device allows the user to recognize a faulty stop and printing device in the invention may be installed in a carriage and removed without possible falling.
EFFECT: increased efficiency.
15 cl, 11 dwg
FIELD: print engineering.
SUBSTANCE: invention provides ink containing first fluorescent color material emitting fluorescence at specified emission wavelength used for measurement or determination of excitement at specified excitement wavelength; and second fluorescent color material emitting fluorescence when excited at specified excitement wavelength, said second color material being contained in larger amount than said first color material. To obtain fluorescence at desired emission wavelength, excitement spectrum of the first color material in ink should have peak wavelength range adjoining specified fluorescent wavelength, and emission fluorescence spectrum of the second color material has emission wavelength range that includes at least above-mentioned peak wavelength range.
EFFECT: enhanced fluorescence intensity due to presence of several fluorescent coloring substances.
9 cl, 26 dwg, 3 tbl, 6 ex
SUBSTANCE: invention pertains to ink for an ink-jet printer. Description is given of the ink for an ink-jet printer, containing 62-77 mass % water, 10-18 mass % dye, X (%), water soluble organic substance 1 and 2.0-15 mass %, Y (%), water soluble organic substance 2. Viscosity of the ink ranges from 1 to 5 cP at 25°C, content X (%) of substance 1 and content Y (%) of substance 2 satisfies the relationship in formula (I) and formula (II): (I) 0.15 ≤ Y/X ≤ 0.9; (II) 15 mass % ≤ X+ Y ≤ 32 mass %. Compound 1 is a water-retaining water soluble organic compound, with difference between the water-retention capacity in a surrounding medium at 23°C and humidity of 45% and water-retention capacity in a surrounding medium at 30°C and 80% humidity at 36% or less. Compound 2 is a water soluble organic compound, different from the dye and from the water soluble organic compound 1.
EFFECT: proposed ink sufficiently suppresses the effect of twisting printing material and provides for stable injection.
26 cl, 6 dwg, 6 tbl, 21 ex
SUBSTANCE: invention relates to water-based printing dye used in the set of reaction liquid with water-based printing dye for image formation. The water-based printing dye is proposed making a part of the system using a reaction liquid including, at least, a polyvalent metal and water-based printing dye comprising, at least a pigment dispersion wherein the pigment is dispersed in anionic polymer disperser. Here note that the water-based printing dye meets the specified requirements.
EFFECT: production of a stable jet printing irrespective of the printing conditions, formation of uniform image with a high resistance to deterioration, clear image even in two-side printing, high-quality image sharpness.
18 cl, 1 tbl, 10 ex
FIELD: polygraphic industry.
SUBSTANCE: ink for jet printing is described including water, watersoluble organic solvent and coloring substance which is phthalocyanine compound. Content of specified coloring substance is in the range of 0.5 wt % ≤ content < 3.0 wt % relative to ink weight. Watersoluble organic solvent includes 2-pyrrolidone in amount of 50.0% or more relative to ink weight. Value of dispersion distance d75, measured using small angle X-ray scattering method for molecular aggregates in ink corresponds to 75% of dispersion distance distribution. Suggested ink is high resistant to ambient gases, to coloring substance aggregation and provides bronze play-resistant images.
EFFECT: getting ink that is high resistant to ambient gases, to coloring substance aggregation and provides bronze play-resistant images.
12 cl, 9 dwg, 9 tbl, 8 ex
FIELD: technological processes; printing industry.
SUBSTANCE: method of mask templates generation, used for generation of image data for printing of multiple types of points by means of scanning, is characterised by the fact that location of printing-permitting pixels is determined in every of multiple mask templates that correspond to multiple types of points, for that purpose location of printing-permitting points is determined, so that low frequency components, which are determined by location of printing-permitting pixels in every of multiple mask templates, are reduced in multiple mask templates. Method of data processing contains stage, at which image data is generated, which provides printing of multiple point types by means of corresponding multiple scanning, using mask template. Device of data processing, which contains facility for generation of image data, provides printing of multiple point types by means of corresponding multiple scanning, using mask template. For generation of image data for printing of multiple point types by means of corresponding scanning multiple mask templates are used, at that when at least two of multiple mask templates are superimposed one above each other, template of printing-permitting pixels from imposed mask templates has less low frequency components compared to the template produced by imposition of at least two mask templates, at which they substitute each other. Invention is produced as a result of deposition caused by grains, which may be formed during separate printing, and also elimination of problems caused by formation of such grains.
EFFECT: higher image quality.
49 cl, 93 dwg
FIELD: polygraphic industry.
SUBSTANCE: invention is attributed to ink for jet printing. Ink for jet printing is described which ink includes coloring substance with formula (I), or its salt, (I) where: M - hydrogen atom, alkaline metal, alkali-earth metal or cation or ammonium ion of organic amine; n - integer 1 or 2, and water-soluble organic solvent, selected from the group including ethylene glycol, diethylene glycol, 2-pyrrolidone, 1,5-pentanediol, 1,6-hexanediol and ethylene-carbamide, in the quantity of 50 wt % or more relative to content of all organic solvents in the ink. Suggested yellow ink has enhanced humidity resistance and color hue stability due to lowered migration.
EFFECT: obtaining ink with enhanced humidity resistance and color hue stability.
7 dwg, 10 tbl, 21 ex
FIELD: polygraphic industry.
SUBSTANCE: invention is attributed to ink for jet printing. Ink for jet printing is described. This ink contains coloring substance which has area of buffer effect in the area of ink application, in quantity from 3 wt % or more of total ink mass. Additionally ink includes compound with formula (I) and/or compound with formula (II) H(OCH2CH2)pR5. Suggested ink for jet printing is capable to prevent damage of heating element surface during contact with liquid and disconnection in circuit for voltage supply to heating element even in case when long-term continuous printing is performed.
EFFECT: obtaining the ink for jet printing which is capable to prevent damage of heating element surface during contact with liquid and disconnection in circuit for voltage supply to heating element even in case when long-term continuous printing is performed.
9 cl, 7 dwg, 5 tbl, 21 ex