Roll emitting diodes for roll drum printing systems, structures and methods

FIELD: printing.

SUBSTANCE: group of inventions relates to inkjet printers and, in particular, to roll inkjet printers having a print head which uses light emitting diodes (LEDs). The improved printing system comprises a drum structure, a print carriage for applying via it the LED curable ink, for example, of one or more print heads, and one or more LED light sources to cure the applied ink. Some embodiments may preferably additionally comprise one or more LED drying stations, for example to control, deceleration or stopping the spread of ink droplets. In addition, some embodiments of the printer may comprise a mechanism for supplying inert gas such as nitrogen, or other gas, which is at least partially depleted in oxygen, between the LED power source and the substrate.

EFFECT: disclosed LED printing structures usually provide higher quality and/or lower costs as compared to systems of prior technology level for a wide range of the resulting printed products.

30 cl, 13 dwg

 

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of patent application U.S. No. 12/943843, filed 10 November 2010, which is fully incorporated herein by reference.

The technical field TO WHICH the INVENTION RELATES

The principles of the present invention relate to inkjet printers and, in particular, relate to-roll inkjet printers that have a print head that uses light-emitting diodes (LED, light emitting diodes).

The LEVEL of TECHNOLOGY

Historically, roll inkjet printers were used to create prints, which are discussed at greater distances, for example, paper prints or vinyl prints for billboards. Such prints are usually not required to be of high quality, and the technology used for many years, were the ink is solvent-based.

In recent years, the technology of UV ink was applied to roll inkjet printers that have allowed us to print on a wider range of substrates and with improved print quality. For example, Fig.1 shows a first exemplary roll printer 10 having ultraviolet curing 24. In the exemplary printer 10 shown in Fig.1, the substrate 14 is moved 18, for example, over an input roller 16, a set of rollers 12, over a cooling device�28 ohms and the output roller 28. Printhead carriage 20, which includes one or more inkjet heads 22, causing the ink to the substrate 14 as it passes through the rollers 12. The ink on the substrate 14 is then hardened by one or more lamps 24 UV curing, which may be located above the cooling device 26.

Although these UV printers has provided adequate quality for a limited range of print applications, the UV light sources 24 is typically heated as substrate 14 and the adjacent surface of the print mechanisms to a temperature of from 150 to 200 degrees Fahrenheit (F), which often can cause problems with accuracy of placement of the UV-curable ink drops 22 or the accuracy of positioning or moving the substrates 14. For example, the heat from the UV light sources 24 is readily stored by the substrate 14 and rollers that can for many substrates, especially thin or sensitive to temperature, can cause them to strain or damage, hindering the preservation of exact or constant gap between the substrate and the print head. This buildup of heat usually limits the types of substrate 14, which can be used in UV printers.

Printers with UV light sources 24 can make� cooling the substrate, for example, using a chilled roller or other cooling device 28, which typically can circulate cooling water for cooling metal roller in contact with the substrate 14. In addition, some UV printers have tubes that resist the absorption of the ultraviolet rays is arranged between the UV light sources 24 and the substrate 14, through which cold water to reduce the heat that otherwise would have reached the substrate.

There is a continuing need to improve the quality of prints at a higher resolution, due to the desire to produce a wide range of printing products, such as, but not limited to, goods, labels and packaging of any retail outlet (POP, point of purchase, where the main requirement is the closeup view. Increasing the capacity of the printer is a constant requirement, which is due to the cost of the customer and competition.

In recent years this has led to an increase in the cost of printed products, since they often require more heads, for example, to increase the print speed and/or endurance of the printer. In addition, we used the surface to be cooled, for example, thermoelectric devices, and�and cooling of the areas near the UV lamps for example, by passing the cooling water in front of the lamps so as to ensure the quality movement for an extended range of substrates, such as thinner and/or temperature sensitive substrates, and to meet the requirements to improve the accuracy of placement of the drops.

Although these UV printers has provided adequate print quality for some applications, the sources 22 of the ultraviolet light is typically heated as substrate and adjacent the drum surface to a temperature of from 150 to 200 degrees Fahrenheit (F). For printing systems using mercury vapor the substrate is usually heated to a temperature of from 150 to 220ºF, depending on factors such as the type of lamp for adjusting the output power and speed. Even with cooling and low power system using the mercury vapor of the substrate is typically heated to a temperature of more than 100ºF.

It would be useful to offer such a printing system, which could produce a wide range of printed products with high resolution, which could be viewed close up, as, for example, printed materials for products, labels and packaging in retail outlets (POP). The development of such a print system will be a major technological advance.

In addition, it would be desirable to offer such a printing system, which m�GLA to produce a wide range of printed materials on various types of substrates, such as thin and/or temperature sensitive substrates. The development of such a system would constitute a further technological progress.

In addition, it would be desirable to offer such a printing system, which could produce a wide range of printed materials on various types of substrates without the need of cooling rollers. The development of such a system would constitute a further technological progress.

Some of the latest flat printers having a planar working surface, use LED curing of the applied ink. Fig.2 shows a second example of the ink jet printer 30, which has LED curing 38 for a flat work surface 32. For example, the substrate 40 may be placed or positioned between the Assembly 34 of the print head and the working surface 32, and the printer 30 includes one or more heads 36 and one or more LED sources 38 light.

Although such plastoferrite printers 30 began the use of LED curing, such configurations plastoferrite printer are often expensive and can only provide a limited range of printed output.

It would therefore be preferable to offer such a printing system that could economically produce a wide variety of printed products in a wider d�AMAZONE substrates. The development of such a system would constitute a further technological progress.

Summary of the INVENTION

Advanced printing system includes a drum structure, the print carriage for the application of LED-curable ink, for example, using one or more printheads, and one or more LED light sources for curing the applied ink. Some variants of the implementation can preferably further include the one or more LED drying stations, for example, to control, slow or stop the spread of droplets of ink. In addition, some embodiments of the printer may include a mechanism for submitting any inert gas, for example nitrogen, or other gas, which at least partially oxygen-depleted, between the LED energy source and the substrate. Open LED printhead structure can provide higher quality and/or lower costs compared with systems of the prior art for a wide range of output printed products, such as, but not limited to, the withdrawal of superwide format (SWF, super wide format), output of wide format (WF, wide format), label, packaging, or displays or signage.

BRIEF description of the DRAWINGS

Fig.1 shows an exemplary Rulon�th printer having ultraviolet curing;

Fig.2 shows an exemplary printer with UV curing for a flat working surface;

Fig.3 is a schematic side view of the first exemplary embodiment of the LED roll to roll printer;

Fig.4 is a schematic side view of a second exemplary embodiment of the LED roll to roll printer;

Fig.5 is a schematic bottom view of an exemplary printhead carriage LED roll to roll printer;

Fig.6 is a schematic side view of an exemplary printhead carriage LED roll to roll printer;

Fig.7 is a schematic partial perspective view of a scanning print carriage and drum to an exemplary LED roll to roll printer;

Fig.8 is a schematic partial perspective view of the print carriage, which extends across the width of the drum to an exemplary LED roll to roll printer;

Fig.9 is a schematic view of the controls and subsystems for some variants of the implementation of the LED roll to roll printers;

Fig.10 is a schematic view of an exemplary Assembly of the station LED curing;

Fig.11 is a schematic view of an exemplary LED Assembly drying station;

Fig.12 is a block diagram of primerno� process associated with printing on the roll LED printer, and

Fig.13 is a partial enlarged view of the ink supply, drying and curing for an LED printer.

DETAILED DESCRIPTION

Fig.3 is a schematic side view of the first exemplary embodiment of the LED (LED) roll printer 50, e.g. 50A. Fig.4 is a schematic side view of a second exemplary embodiment of the LED roll to roll printer 50b. LED roll printers 50, e.g. 50A (Fig.1), 50b (Fig.2) include a drum-type structure 54, which provides a working surface of a printing substrate 53, in combination with the print carriage 56 and one or more assemblies 58 LED curing.

As can be seen in Fig.3 and Fig.4, the print drum 54, as a rule, is arranged to receive the substrate 53 for printing, when the substrate 53 is arranged to move 110 (Fig.7, Fig.8) considered between the roll 52 and the winding roll 60. The print drum 54 is cylindrical, having a diameter of 55, which preferably may be of sufficient size to provide a curved surface 57, where one or more printheads 72 (Fig.5, Fig.6) are located at the height of the head 142 (Fig. 9), for example, in the range from 1.5 mm to 2 mm from the surface of the substrate 53.

Printing drum 56 is preferably at m�re partially consist of a material, possessing good dimensional stability, such as, but not limited to, ceramics, carbon fiber, Nickel alloy (e.g., Hastelloy C ®, available from Haynes International, Inc., Kokomo, IN), stainless steel, titanium or their alloys. For some variants of implementation, the roll LED drum printers 50 print drum 54 preferably may consist of the internal structure 114 (Fig.7, Fig.8), such as a cylindrical core comprising a polymer and/or metal, with the outer shell 114 (Fig.7, Fig.8), for example, of natural or synthetic rubber, polymer, ceramic, carbon fiber, Nickel alloys (e.g. alloy Hastelloy C ®), stainless steel alloys, titanium or their alloys. Printing drum 56 may be preferably at least partially hollow, such as including holes or cavities 117, passing through it, whereby it may be regulated by the weight, cost and/or inertia. Printed reels 56, which are at least partially hollow 117, provide rapid cooling during rotation of the drum 110 (Fig.7), thereby reducing or eliminating the accumulation of heat over time.

During the printing process, for example 220 (Fig.12), the printing drum may preferably controlled to rotate at step 112 (Fig.7) or to rotate continuously 110. In �llustrating LED drum printers 50, with continuous rotation 110, for example, at a given speed, the printer 50 may preferably rasterize an image signal or file 145 data to properly create the image 242 (Fig.13), for example, by using a Central controller 144 (Fig.9), and/or a local control module 88 ink system (Fig.6). In some exemplary embodiments, the substrate 50 53 110 moves slowly, while the head 72 to move quickly, e.g., 102, 104 (Fig.7), for example, parallel to the axis 103 of the drum along one or more support rails 84, where the image 242 is constructed according to the joint motion, for example, 110, 102.

LED drum printers 50 provide precise positioning and movement of the substrate 53, resulting in accurate placement of droplets 72, because the substrate 53 is essentially wrapped around a large area 69 contact convex cylindrical circuit 94 (Fig.6) of the printing drum 54, which is typically significantly larger than the field of 68 printed area (Fig.3). In addition, the substrate 53 in LED drum printers 50 is not deformed from high temperature, because the station 58 LED curing at work are cool.

The substrate 53 is placed around the drum 54 and is held in place by a cylindrical clamping rollers 62, e.g., 62a, 62b. In the first exemplary variant implementation�tion LED drum roll printer 50, shown in Fig.3, pinch rollers 62a, 62b are located at the bottom of the print drum 54, for example, at point 65A of the feed substrate and the point of exit 65b of the substrate. After the substrate 53 is placed on the print drum 54, the friction 176 (Fig.9), for example, between the substrate 53 and the printing drum 54 and/or the force applied clamping rollers 62, ensures that the substrate 53 is not moved or stretched in the print zone 68. The second exemplary embodiment of the LED drum roll printer 50 shown in Fig.4, further includes one or more idler rollers 64, for example, the first tension roller 64A between the first pressing roller 62A and de-coiling roll 52 and/or second tension roller 64b between the second pressing roller 62b and by rotation of the roll 60.

Control of the movement of the printing drum can typically include an encoder 146 (Fig.9) and the corresponding motor 148 (Fig.9), where the encoder 146, such as a linked or associated with the Central controller 144 provides a signal or otherwise interacts with the motor 148, and where the motor 148 is associated with a drive mechanism 150 for moving 110 of the printing drum 54, for example, directly or indirectly. In some embodiments, the system 50 of the print drum 54, together with the substrate 53 is preferably able to move, e.g.�, step 112 (Fig.7, Fig.8), with accuracy within at least 0.25 of the diameter of a pixel. For example, for an LED roll to roll printer 50 having the print resolution of 1200 dots per inch (dpi), moving 110 preferably may be stepped or otherwise managed 112 to be equal to or less than 0.0002 inch.

Drum structure 54, therefore, provides a working surface for printing, having a convex cylindrical circuit 94 (Fig.6) within the print zone 68 where the drum 54 is also used to control the substrate 53 in combination with the print carriage 56 having a corresponding cylindrical contour 94, and one or more stations 58 LED curing. Station 58 LED curing provides a cured 232 (Fig.12) of the ink is caused to 226 (Fig.12) on a substrate 53, located on the surface of the drum 54, while substantially reducing or eliminating the heat load on the substrate 53 and/or drum 54, for example, compared with the ultraviolet lamps 24 (Fig.1). Current suppliers-sensitive LED ink include 3M, Inc. from the city of St. Paul, Minnesota; ImTech Inc. from the city of Corvallis, Oregon; Agfa Graphics from the city of Mortsel, Belgium; and Sun Innovations company from Novosibirsk, Russia.

The current exemplary embodiment of the LED drum of the printing system 50, operating at full capacity, shows the range of temperature� substrate 52 from 70 to 100 degrees Fahrenheit, the temperature of the drum roller is less than the temperature of the substrate 53, when printing and navigating the drum roller 54, while the temperature of the drum roller 54 is about 80 degrees Fahrenheit when the substrate 53 is missing.

In various printing systems, the key temperature is the temperature at the surface of the substrate, for example, 14, 40, 53, when there are dark or black image 242, for example the ink 242, as dark colors absorb more heat, this can cause differential expansion due to variable density printing. Such differential expansion may cause buckling or pleating of the substrate prior to printing systems, such that the substrate does not move properly and/or may hit on the head.

Station 58 LED curing, therefore, reduce or eliminate crimping, bending or other changes in the distance to the substrate 59, 142, which otherwise may occur with other sources of curing energy, e.g., ultraviolet lamps 24. In addition, LED roll printers 50 retain precise control of movement of the substrate, since the operating temperature of the printing drum 54 and the substrate 53 is substantially more stable compared with printers that have other sources of energy from�of eridania, for example, the UV lamp 24.

Drum structure 54 in combination with stations 58 LED curing provides high quality printing for a wide range of printed products and is cost-effective compared to prior printing systems. In addition, the drum structure 54 and its associated mechanisms, for example, rollers 52, 60, 62, 64, robust in nature and can be easily implemented for a wide range of print formats and applications.

Fig.5 is a schematic bottom view 70 indicative of the print carriage 56 for LED roll to roll printer 50. Fig.6 is a schematic side view 80 of an exemplary print carriage 56 for LED roll to roll printer 50. An exemplary printhead carriage 56, shown in Fig.5, includes one or more printheads 72, for example, 72A-72m, such to provide a variety of color channels, such as, but not limited to, the process color CMYK printing including cyan (C), Magenta (M), yellow (Y) and black (K) colors; and/or one or more colors for choice, for example, the colors of the palette Pantone ®. In some embodiments, the print carriage 56 and the axis 78 of the carriage may be preferably perpendicular to the direction of movement 110 (Fig.7) of the substrate 53 and parallel to the axis of the printing drum (Fig.7). In other embodiments, the implementation�of moving the print carriage 56 and the axis 78 of the carriage can be preferably parallel to the direction of movement of the substrate 110 53 and perpendicular to the axis of the printing drum.

As shown in Fig.6, the print carriage 56 typically has a concave contour 96 of the carriage, in which the jet nozzle 98 72 printheads are usually located at a certain height 59, 142 (Fig.3, Fig.9) from the printing drum 54 having a corresponding convex cylindrical contour 94.

Approximate printheads 72, as shown in Fig.5 and Fig.6 as a rule, are operated by local control electronics 88, 90 of the ink supply, for example, an ink cartridge, and an associated conduit 92, and drops 172 ink (Fig.9) controlled ink-jet applied onto a substrate 53, for example, in accordance with the incoming signal 145 image (Fig.9).

Given as an example of the print cartridge shown in Fig.5, also includes one or more stations 58 LED curing, e.g., 58A, 58b, each station 58 LED curing includes LED elements 184 (Fig.10) for directing light 250 (Fig.13) for curing, drying, 172 ink deposited on a substrate 53. As can be seen from Fig.5, the most modern of embodiments of the system 50 include two or more stations 58 LED curing, e.g., 58A, 58b located, for example, at opposite ends 60A, 60b of the print carriage 56. Although illustrative printhead carriage 56, shown in Fig.5, includes � yourself station 58 LED curing for example, 58A, 58b, attached at opposite ends 60A, 60b, station 58 LED curing alternative can be located separately from the print carriage 56 in LED roll print system 50. Station 58 LED curing usually provide complete curing of the ink 172, for example, for a given number of passes of the substrate 53 by one or more respective stations 58 LED curing, and the power level can be accurately adjusted, for example, by control of 152 LED curing (Fig.9).

Given as an example of the print cartridge shown in Fig.5, also includes one or more LED drying stations 76, for example, 76a-76e, for example, between one or more groups of printheads 72, with each LED drying station 76 includes LED drying elements 204 (Fig.11) for directing light 246 (Fig.13) to control or stop the spread of deposited droplets 172 ink placed on the substrate 53. In some embodiments the LED roll to roll printers 50, the number and frequency of the drying stations 76 may vary from one drying station 76, is placed, for example, in the center of the print carriage, for example, between stations LED curing 58, to many LED drying stations 76, for example, having LED drying station 76 for each group g�nimble 72. LED drying station 76 can preferably be thin and/or have relatively low power, for example, compared with 58 stations LED curing, and LED drying station 76 can provide enough power to control or stop the spread of deposited droplets 172 ink (Fig.9). LED drying station 76 may, therefore, reduce the negative impact on the print quality differential distribution of droplets and interaction with each other ink of different colors.

LED roll printers 50 provide accurate placement of the drops, controlled spreading of the drop and minimal interaction drops, thus giving the excellent addressability drops and the print quality, such as:

- hold environment 53 on the drum 54;

- accurate step movement;

- proper choice of the printhead; and

- optional drying.

As can be seen from Fig.6, the print carriage may be supported relative to the print drum 54 via one or more rails 84, which are mounted parallel to the drum 54, for example, with appropriate support rails mechanisms 86. The print carriage 56 may be fixedly attached to the rail 84, as, for example, the print carriage 56 which extends across the entire width of the printing drum�54. Alternatively, the printhead carriage 56 may be moved along the rail 84, as, for example, the print carriage 56, which scans across the width of the substrate 53, located on a printing drum 54.

Fig.7 is a schematic partial view in perspective of the printing drum 100 and the scanning print carriage 56 for an exemplary LED roll to roll printer 50. Fig.8 is a schematic partial perspective view 120 of the print carriage 56 which extends across the entire width of the printing drum 56 exemplary LED roll to roll printer 50.

As shown in Fig.7, the print carriage 56 is preferably 102 can move through the scan relative to the print drum 54, for example, by incremental steps 104 of the carriage. Given as an example of the print carriage 56, shown in Fig.7, is movably mounted to the support rail 84 and preferably 102 to move across the range 108 of the carriage in which the print heads 54 can cause ink droplet 72 to the useful width of the image of the substrate 53, which can pass across the width 106 of the substrate 53, or can be controlled is limited to the region 122 (Fig.8) within the width 106 of the substrate so as to provide a minimum field 124 on the outer edges of the substrate 53. LED drum printers 50 having the scan, ie mobile, the print drum 54 for single-pass printing can be used for a wide range of printing applications, such as, but not limited to, billboards, signage applications in retail outlets, for example, wide format (WF) and/or supererogatory (SWF). For example, a scanning pass of the print carriage 56 is provided for substrates having a width of 106 to 50 inches that is usually necessary for labels, billboards, signage and/or application in retail outlets.

Given as an example of the print carriage 56, shown in Fig.8, for example representing the print plate 56, runs the entire length of the printing drum 54 and is fixedly installed on one or more support rails 84 and stationary printheads 72, for example, many printheads 72 for applying the set of colors is controllably applied to the ink drops 172 for useful width 122 of the image of the substrate 53. Useful width 122 of the image of the substrate 53 can pass through the entire width of the substrate 106 or 53 can be controlled is limited to the area within the width of the substrate 106 so as to provide minimum field 124 on the outer edges of the substrate 53. LED drum printers 50 having a stationary print drum 54 for single-pass printing can be used for a wide variety of printed approx�of modifications, such as, but not limited to, printing of labels and packaging. For example, a stationary single-pass printhead carriage 56 is provided for applications that have a width 106 of the substrate 12 inch that is typically used for labels.

Given as an example of the printhead carriage or plate 56, shown in Fig.8, may include long LED array 182 (Fig.10), which extends across the width of the drum 54 at a predetermined distance from an end of the array of printheads, for example, before the output terminal of the or the pressing roller 62. Given as an example of the printhead carriage or plate 56, shown in Fig.8, may alternatively include a variety of LED arrays 182.

For various embodiments of LED drum printers 50 diameter 55 of the printing drum 54 having a corresponding convex contour 96, and the corresponding concave contour 97 print carriage 56 can preferably be selected based on one or more other parameters of the light drum of the printer, such as, but not limited to, the configuration of the print carriage 56, for example, scanning or stationary, and/or configuration of printheads 72, for example, perpendicular to the direction of travel of the substrate 110, for stationary single-pass LED printer drum 50 with the carriage, to�area extends over all of the print drum 54, or parallel to the direction of travel of the substrate 110, for example, for a scanning LED printer drum 50 having a carriage which moves 102 (Fig.7) along the printing drum 54.

Since 72 printheads typically include a large number of jet nozzles 98, the distance between the different nozzles 98 and the substrate 53 and the printing drum 54 may be slightly different for some variants of implementation of the printer 50. For example, printheads 72, which have a flat surface 99 of head (Fig.6), the nozzle 98, which are located close to the center of the surface 99 of the head, may be closer to the substrate 53 than the nozzle 98, which are located farther from the center of the working surface 99 of head. The time of flight of the ink drops 172 (Fig.9) increases according to the distance between the nozzles 98 and the substrate 53. Some embodiments of the LED drum printers 50 preferably have such a configuration to minimize the differences in time of flight the distance between the nozzles 98 and the substrate 53 is relatively uniform across the print head, for example, but not limited to, ranges from 1 mm to 1.4 mm, or, alternatively, the maximum distance difference is, for example, 0.5 mm. In some embodiments, the LED drum printers 50 length 72 printheads and d�Amer 55 of the printing drum 54 may preferably be selected to minimize such differences in time of flight. In addition, some embodiments of the LED drum printers 50 have heads that are configured for changing the angle to minimize the differences in time of flight. Some embodiments of the LED drum printers 50 may preferably to compensate for the difference in time of flight, for example, through local control of the ink system 88 and/or the Central controller 144 (Fig.9), for example, by controlling the time of firing the droplets 226 (Fig.12) for one or more of the nozzles 98. For some variants of the implementation of single-pass LED drum printers 50, in which the head 72 is inserted perpendicular to the movement of the drum 110, it is less of an issue, for example, in cases where the distance between the nozzles 98 and the substrate 53 is within the maximum differential distance.

Fig.9 is a schematic view of control blocks 140 and subsystems of some embodiments of LED roll to roll printers 50, for example, for the controlled movement of the printing drum 56, the controlled deposition of droplets 172 ink LED and controlled curing 232 (Fig.12). Shown as an example embodiment of the system shown in Fig.9, also preferably includes one or more neutralizing stations 160 and adnfle more drying stations 76 with their associated control units.

As shown in Fig.9, to move the printing drum 56 may include an encoder 146 and the corresponding engine 148, where the encoder 146, such as a linked or associated with the Central controller 144 provides a signal or otherwise interacts with the motor 148, and where the motor 148 moves the print drum 54, for example, directly or indirectly through the drive mechanism 150, 110 to move the substrate 53, for example, incremental steps 112, for example, to provide the required resolution with a put drops 172 ink.

In addition, as shown in Fig.9, the system 90 of the ink supply, for example, which includes ink tanks and associated piping 92, typically managed by a Central controller 144 and/or local unit 88 controls (Fig.6) for controlled ejection of ink drops 172 of one or more printheads 72 on a substrate 53, for example, in accordance with the incoming signal 145 of the image.

As further seen in Fig.9, one or more stations 58 LED curing, e.g., 58A, 58b, are controlled by a Central controller 144 and/or the control unit 152 LED curing light radiation from one or more LED elements 184 (Fig.10) for curing, that is, drying the deposited droplets 172 ink placed on the substrate 53.

Given as an example Sidrolandia the printer 50, shown in Fig.9, preferably includes one or more LED drying stations 76 which is controlled by a Central controller 144 and/or block 154 control LED for drying radiation 228 (Fig.12) light 246 (Fig.13) from one or more LEDs of the drying elements 204 (Fig.11) in such a way as to ensure sufficient power output 228 to control or stop the spread of deposited droplets 172 ink placed on the substrate 53.

LED roll printers 50 preferably may further include means for supplying gas 157, which represents an inert gas or a gas that at least partially oxygen-depleted, between stations 58 LED curing and substrate 53. Similar feeding gas may preferably be provided at or near one or more drying stations 76 to similarly serve 164 gas 157 between LED drying stations 76 and the substrate 53. Given as an example LED roll printer 50 shown in Fig.9, preferably comprises a reservoir 156 for storage and distribution of gas 157, such as, but not limited to an inert gas, e.g. nitrogen. Gas 157, as a rule, is transported via line 158 to neutralizing the 160 stations located on or adjacent to the relevant stations 58 LED curing. The gas supply 157 may preferably control�affect the Central controller 144 and/or block 162 management of neutralization for the introduction of a layer 164 of the gas 157 between stations 58 LED curing located on or near the print carriage 56, and the substrate 53, located on the outer surface 94 of the printing drum 54, to reduce the level of oxygen in the print zone, for example, to improve the quality of the cured ink or to reduce the power required for curing ink applied 172.

Fig.10 is a schematic illustration of the approximate 180 Assembly 58 station LED curing, which typically includes an array 182 of one or more LED elements 184, for example, installed or otherwise attached to the housing Assembly 186 curing. Given as an example of the LED array 182, shown in Fig.10, includes a plurality of the LED elements 184 arranged in rows columns 188 and 190. As LED elements 184, as a rule, are reliable, Assembly 58 stations LED curing reliably provide LED curing over a long lifetime. In addition, since the Assembly 58 stations LED curing often include lots of LED elements 184, Assembly 58 LED curing may preferably provide redundancy. For example, even if some of the LEDs fail, the majority of the LED elements will continue to work to provide for curing 232, thus reducing power loss and/or to prevent downtime of the printer. Current suppliers of LED sources �Veta for curing and/or drying include company Exfo, Inc., Quebec, Canada; Phoseon Technology, Hillsboro, Oregon; Integration Technology North America, Chicago, Illinois, and Baldwin Technology Co., G. Shelton, Connecticut.

Fig.11 is a schematic illustration 200 of an exemplary Assembly 76 LED drying station, which typically includes an array 202 of one or more LED elements 204, for example, installed or otherwise attached to the housing Assembly 206 drying station. Given by way of example, the drying LED array 202 shown in Fig.11, include a variety of LED drying elements 204 arranged in rows columns 208 and 210. Since the LED elements 204 as a rule, are reliable, assemblies 76 LED drying stations reliably provide LED drying 228 over a long lifetime. In addition, since the Assembly 76 LED drying stations often include lots of LED elements 204, Assembly 76 LED curing can provide redundancy for drying functionality. For example, even if some of the LEDs 204 fails, the majority of LED elements 204 will continue to work to ensure drying 228, thus reducing power loss and/or to prevent downtime of the printer.

Fig.12 is a block diagram of the sequence of operations of an exemplary process 220 that is associated with LED roll printer 50. First provided 22 LED printer 5, which includes a cylindrical print drum 54, one or more stations LED curing and the print carriage 56 that defines overall concave section 96, which generally corresponds to the outer surface contour 94 of the printing drum 54, in which the printhead carriage includes one or more printheads 72 having a nozzle 98 for ink, located generally on the concave surface 96. The substrate 53 224 is then fed to the print drum to the print carriage 56, and drops 172 ink 226 are applied to the substrate 53, for example, in accordance with the input signal or file 145 data, for example, to create an image, text, pattern or any combination of them. For embodiments of the LED of the printer 50 having one or more drying stations 76, one or more stations 76 can be powered 228, for example, in connection with the filing 226 ink, transfer roller 54 and/or the movement of the carriage 56 of the printer, such as scanning 102 to slow or stop the spread of ink applied 172. For embodiments of the LED of the printer 50 having one or more neutralizing stations 160, one or more neutralizing stations 160 may preferably serve 230 inert gas 157, for example, in connection with the inclusion of 232 one or more stations LED curing for curing the applied ink 172.

Fig.13.�t is a partial enlarged view 240 ink supply, dry and cure for an exemplary LED of the printer 50. For example, droplets 172 ink fired printheads 72 on a substrate 53. For LED printers 50, having a drying station 76, a drying element 204 can be controlled to be powered to emit drying energy 246 thus to slow or stop the spread of ink applied 242, for example, printed image 242, on the substrate 53. Station 58 LED curing, e.g., 58A, 58b, in a controlled manner are powered to emit energy of 250 curing to harden the ink 242 on the substrate 53. In addition, for LED printer 50 having a neutralizing station 160, the gas can in a controlled manner distributed between stations curing and substrate 53. Similarly, neutralizing station 160 may preferably distribute the gas 157 drying between stations 76 and the substrate 53, if necessary.

LED roll printers 50 unite system 58 LED curing with the construction of the printer based on the drum, to take advantage of the low temperature curing, provide assemblies 58 LED curing. LED roll printers 50 can also preferable to provide a drying station 76, for example, LED the drying Assembly 76 to slow or stop the flow of ink applied. �configuratie LED roll to roll printer 50 is relatively less expensive to manufacture than the known design of the printers and provide high quality printing that may be required for a wide range of printing applications, such as, but not limited to, applications in retail outlets, labels, packaging, and/or photorealistic applications.

Cold LED lamp elements 184 provide a seal on the drum without heating the drum, thus preventing or reducing the change of the gap with the substrate as a result of temperature changes, as well as providing precise control of the movement of the substrate. The use of the drum 54 is substantially simplifies the design of the printer 50 that allows you how to improve print quality and reduce costs.

Some embodiments of the LED drum printers 50, such as, but not limited to, for supererogatory (SWF) and wide format (WF) printer includes two sets of rollers for controlling movement of 100 of the substrate 53 and the Central drum working surface 54 for supporting the substrate 53 during the printing process. The rollers 62, 64 is preferably composed of rubber and may preferably have high dimensional stability to ensure smooth and accurate drive of the substrate 53, for example, for the substrate 53 having a width 106 (Fig.7, Fig.8) up to 5 meters.

In many known designs of printers changes giving� " s on the substrate can create an error of the movement, which can lead to errors of placement of the drops, while sliding the substrate may also be a factor, for example, using a variety of substrates. In contrast to the known constructions of the working surface, LED drum printers 50 preferably can reduce or eliminate motion errors associated with any changes to the working surface, the build-up of material and/or temperature fluctuations.

While some of the mechanisms described herein with reference to specific embodiments of LED printers 50, some mechanisms can be easily used in various printing equipment. For example, while the LED dryer Assembly described herein as used for LED roll to roll printers, such LED drying Assembly can provide drying for other configurations, for example, for other printers with UV curing, in which the spread of such ink can be controllably slowed or stopped by using LED drying.

Accordingly, although the invention has been described in detail with reference to specific preferred variant implementation, specialists in this field of technology to which belongs the present invention, it will be understood that various changes and modifications can be made without atstop�ing from the essence and scope of the claims, which follows below.

1. Printing system, including:
a printing drum having a cylindrical outer contour for receiving the substrate at him;
the print carriage having a generally concave inner contour defined therein, and having a first end and a second end opposite the first end, wherein the printhead carriage includes:
one or more printheads for controlled ink-jet shooting ink onto a substrate;
the number of assemblies LED (light emitting diode) curing for curing the applied ink on the substrate, wherein the first assembling of the LED curing assemblies LED curing located on the first end of the printhead carriage, and a second Assembly LED curing assemblies LED curing located on the second end of the printhead carriage, and
at least one drying station, positioned between the first LED Assembly and second curing Assembly LED curing for delivery of light energy to be deposited on the substrate to the ink to control or stop the spread of droplets of ink before curing assemblies LED curing; and
the drive mechanism for rotation of the printing drum and the substrate relative to the print carriage.

2. The printhead system of claim 1, further comprising:
at least one rail is configured in a�m parallel to the printing drum; and
the mechanism for moving the print carriage along at least one rail.

3. The print system according to claim 1, in which the printhead carriage is fixedly located with respect to the printing drum, wherein the substrate has the characteristic width of the substrate, which runs in the longitudinal direction along the printing drum, wherein the substrate has a certain width printing which is less than or equal to the width of the substrate, and wherein the printheads are configured to apply ink to any point on a certain width of the print substrate.

4. The print system according to claim 1, in which the printhead carriage has a carriage axis defined between the first end and second end, wherein the axis of the carriage in either parallel or perpendicular to the printing drum.

5. The print system according to claim 1, in which the printhead carriage further includes a mechanism for feeding gas over at least part of the substrate.

6. The print system according to claim 5, in which the gas is any of an inert gas or gas at least partially oxygen-depleted.

7. The print system according to claim 6 in which the inert gas is a nitrogen.

8. The print system according to claim 5, in which the mechanism for gas supply is arranged to supply gas between at least one of the assemblies LED curing and podloga�.

9. The print system according to claim 1, in which the printing drum includes an outer shell, which consists of any of the following: natural rubber, synthetic rubber, polymer, ceramic reinforced with carbon fibers composite material, Nickel alloy, stainless steel, titanium or their alloys.

10. The printhead system of claim 1, further comprising:
roller for a parent roll; and
roller for winding roll;
moreover, the substrate is rotationally moved over the print drum is considered between the roll and the winding roll.

11. The print system according to claim 10, further comprising:
at least one pinch roller between the printing drum and any of the parent roll or roller for winding the roll, and pinch roller configured to hold the substrate in contact with the outer contour of the printing drum.

12. The print system according to claim 11, further comprising:
at least one tension roller between the pressing roller and any of the parent roll or roller for winding roll, and a tension roller configured to apply force to the substrate.

13. The print system according to claim 11, in which the printing drum and the printhead carriage is arranged to provide a print of any of these�etok, billboards, signage, or applications in retail outlets.

14. The method, which includes stages:
for the printer, including:
cylindrical printing drum, and
the print carriage having a first end and a second end opposite the first end, wherein the printhead carriage defines a generally concave area that generally surrounds at least a portion of the outer surface of the printing drum, wherein the printhead carriage includes:
one or more printheads having nozzles for ink, located generally on the concave surface, inkjet fired ink;
the number of assemblies LED curing for curing the applied ink on the substrate, and the first assembling of the LED curing assemblies LED curing located on the first end of the printhead carriage and the second Assembly of the LED curing assemblies LED curing located on the second end of the printhead carriage, and
at least one drying station, positioned between the first LED Assembly and second curing Assembly LED curing for delivery of light energy to be deposited on the substrate to the ink to control or stop the spread of droplets of ink before curing, by at least one of the assemblies LED curing;
feeding the substrate over the print drum to p�datausa the carriage;
applying one or more drops of ink onto a substrate;
delivery of light energy through a drying station to be deposited on the substrate the ink; and
supplying power to at least one of the stations LED curing for curing the dried ink applied.

15. A method according to claim 14, wherein the printer further includes:
at least one rail configured generally parallel to the printing drum; and
the mechanism for moving the print carriage along at least one rail.

16. A method according to claim 14, in which the printhead carriage is fixedly located with respect to the printing drum, wherein the substrate has the characteristic width of the substrate, which runs in the longitudinal direction along the printing drum, wherein the substrate has a certain width printing which is less than or equal to the width of the substrate, and wherein the printheads are configured to apply ink to any point on a certain width of the print substrate.

17. A method according to claim 14, in which the printhead carriage has a carriage axis defined between the first end and second end, wherein the axis of the carriage in either parallel or perpendicular to the printing drum.

18. A method according to claim 14, further comprising the stage of:
gas flow over at least part of the substrate.

19. A method according to claim 18, in which ha� represents any of an inert gas or gas at least partially oxygen-depleted.

20. A method according to claim 19, in which the inert gas is a nitrogen.

21. A method according to claim 18, in which the gas is fed between at least one of the assemblies LED curing and substrate.

22. A method according to claim 14, in which the printing drum includes an outer shell, which consists of any of the following: natural rubber, synthetic rubber, polymer, ceramic reinforced with carbon fibers composite material, Nickel alloy, stainless steel, titanium or their alloys.

23. A method according to claim 14, wherein the printer further includes:
roller for a parent roll; and
roller for winding roll;
moreover, the substrate is rotationally moved over the print drum, between the roller for parent roll and a roller for winding the roll.

24. A method according to claim 14, wherein the printer further includes:
at least one pinch roller between the printing drum and any of the parent roll and a roller for winding the roll, and pinch roller configured to hold the substrate in contact with the outer contour of the printing drum.

25. A method according to claim 24, wherein the printer further includes:
at least one tension roller between the pressing roller and any of the roller for de-coiling loop�and or roller for winding the roll, moreover, the tension roller is arranged to apply a force to the substrate.

26. A method according to claim 14, wherein the printer is arranged to print any of: labels, billboards, signage, or applications in retail outlets.

27. Printhead carriage for printing on a substrate placed on a cylindrical printing drum which includes:
a slider body having a first end and a second end opposite the first end, and having a concave inner contour defined on it.
one or more printheads having nozzles for ink for managed jet shooting ink onto a substrate placed on a printing drum, wherein the nozzles are arranged on the concave inner contour of the housing of the carriage;
the number of assemblies curing, each of the curing assemblies includes one or more light-emitting elements (LED) curing the applied ink on the substrate, and the first Assembly of the curing of the curing assemblies located on the first end of the housing of the carriage and the second Assembly of the curing of the curing assemblies located on the second end of the housing of the carriage, and
at least one drying station, positioned between the first Assembly and second curing the curing Assembly for delivering light energy to be deposited on the substrate to the ink to control�I or stop the spread of droplets of ink before curing, by at least one of the assemblies curing; and
the mechanism for positioning the concave internal contour relative to the printing drum.

28. The printhead carriage according to claim 27, in which the carriage axis defined between the first end and second end, wherein the axis of the carriage in either parallel or perpendicular to the printing drum.

29. The printhead carriage according to claim 27, further comprising:
the mechanism for feeding gas over at least part of the substrate.

30. The printhead carriage according to claim 29, in which the gas contains any one of an inert gas or gas at least partially oxygen-depleted.



 

Same patents:

FIELD: printing.

SUBSTANCE: device comprises the activation control means for activating the processing device, when power is supplied to the processing device. The input means for performing notification to prompt the user of the processing device to enter the information of authentication to authenticate the user and enter the authentication information in accordance with the user instruction based on the notification. The permission means for permission of performing the predetermined processing by the processing device in accordance with the authentication information entered by the said input means. At that permission by permission means is prohibited when the power supply to the processing device is stopped. And in case when the said activation control means activates the processing device and executing the predetermined processing is not permitted by the said permission means, the said input means performs notification, and in the case when the said activation control means activates the processing device and executing the predetermined processing permitted by the said permission means, the said input means does not perform notification.

EFFECT: control device for controlling the processing device in the printing system is provided, which performs the predetermined processing.

13 cl, 7 dwg

FIELD: printing.

SUBSTANCE: printing device comprises a nitrogen generator designed for separating the ambient atmospheric air to the first component and the second component. The first component comprises an oxygen component that comprises oxygen in a higher concentration than the ambient atmospheric air, and the nitrogen component that comprises nitrogen at a lower concentration than the said ambient atmospheric air. The second component comprises a substantially pure nitrogen component. The printing device comprises flow print assembly of ink jet printing. The flow print assembly comprises a region of oxygen inhibition. The printing area is located in the flow line after the said area of the oxygen inhibition, at that the printing area comprises a unit of printheads. The area of inertisation is located in the flow line after the said printing area, and the said area of inertisation comprises the applicator of nitrogen. The curing area is located in the flow line after the said applicator of nitrogen, and the said area of curing comprises a curing radiation lamp.

EFFECT: conveying surface is designed for providing the support for the carrier and for transportation of the said carrier through each of the said flow print assemblies of ink jet printing and for transporting the carrier through the area of the oxygen inhibition.

20 cl, 8 dwg

FIELD: physics, computer engineering.

SUBSTANCE: image fixing device includes a supporting surface along which a recording medium moves from the front side to the back side, and can support the recording medium; an image fixing section which is located opposite the supporting surface and performs an image fixing process when the recording medium is supported by the supporting surface after recording the image on the medium intended for recording in a front position of the supporting surface. When the direction in which the supporting surface and the image fixing section are located opposite each other changes, the supporting surface is located relatively further from the image fixing section than the area which is located in front of the supporting surface on a path along which the recording medium moves. The supporting surface includes a tilted surface, which reduces distance, which is tilted so as to approach the image fixing section such that the distance measured from the image fixing section in the direction in which the supporting surface and the image fixing section are located opposite each other gradually decreases towards the back side of the path along which the recording medium intended for recording moves.

EFFECT: improved structure.

8 cl, 11 dwg

FIELD: chemistry.

SUBSTANCE: invention can be used for inkjet printing. A porphyrazine colorant or its salt is represented by formula (1), where rings A-D each independently represents a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring. E represents alkylene, X represents sulfo-substituted group aniline or the like, which can additionally have a substituent, R1 represents C1-C6 alkyl group, b equals to 0.00 or more and less than 3.90, as the average value, c equals to 0.10 or more and less than 4, as the average value, and the sum of b and c equals to 1.00 or more and less than 4.00, as the average value. The composition of colorant for inkjet printing, which contains the porphyrazine colorant or its salt.

EFFECT: invention makes it possible to obtain the composition of a colorant, which has good shade, possesses excellent properties of various types of resistance, in particular, ozone resistance, provides a possibility of high density of printing, possesses properties which almost do not produce a bronze tint effect.

21 cl, 5 tbl, 17 ex

FIELD: printing.

SUBSTANCE: substrate of the printing elements comprises a printing element, a switching element which actuates the printing element based on the input control signal, a first current source which generates the predetermined current. In addition the substrate comprises a second current source which generates the current based on the input voltage, and a current generating circuit which generates the control signal by amplifying the current obtained by adding the voltage generated by the second current source and the current generated by the first current source, and then generates the control signal by amplifying the current generated by the first current source.

EFFECT: increased control speed with the feedback for voltage to be applied to the printing element with low power consumption.

11 cl, 12 dwg

FIELD: printing industry.

SUBSTANCE: ink jet printing device controls ejection of ink from the printheads, whereby only low infiltration ink is ejected in the edge area of print carrier, which is located next to the nonprint area, and at this time, the high infiltration ink is not used. In addition, the ink jet printing device controls ejection of ink from the printheads, whereby the low infiltration ink and the high infiltration ink are used for non-periphery area which is located near the periphery area, and to carry out printing the low infiltration ink are ejected into the non-periphery area prior to the high infiltration ink.

EFFECT: prevention of reduction of optical density.

14 cl, 86 dwg

FIELD: printing industry.

SUBSTANCE: image processing method involves a stage, at which input data of an image are determined to colour ink data, which corresponds to volumes of use of one or more types of colour inks and transparent ink. With that, input image data is converted to colour ink data so that the amount of transparent ink used in colour ink data using the ink containing technical carbon becomes more or is equal to the amount of transparent ink used in colour ink data using no ink containing the technical carbon.

EFFECT: providing the possibility of reducing excess glossiness in the area of dark sections of the printed image.

12 cl, 31 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to jet printing inks, particularly non-aqueous inks for jet printing. The ink for jet printing contains a pigment, binder, polyetheramide resin as a pigment dispersant, an organic solvent and an anti-corrosion agent from an imidazole group or a group of volatile anti-corrosion agents, preferably dicyclohexylamine or cyclohexylammonium cyclohexylcarbamate.

EFFECT: disclosed inks have high dispersion stability and prevent corrosion of print heads of jet printers and nozzle clogging.

8 cl, 8 tbl, 34 ex

FIELD: printing industry.

SUBSTANCE: waterless ink composition for inkjet printing contains a pigment, a polymer in an amount of 1 to 20 wt % in terms of total weight, dispersing of pigment, organic solvent, and alcohol containing an amino group in an amount of 0.01 to 3 wt % in terms of total weight. The alcohol containing an amino group is selected from the group consisting of 2-amino-1-butanol, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol and tris(hydroxymethyl) aminomethane. As the polymer the ink contains polyester, acrylic resin or polyvinyl chloride. The aqueous extract of the said waterless ink composition has pH ranging from 6.0 to 10.0.

EFFECT: increased stability of its pressure injection and the absence of clogging the nozzle of the print head with achievement of high quality printing.

7 cl, 1 tbl, 5 ex

FIELD: printing.

SUBSTANCE: invention relates to a substrate for the print head and the print device on the print head of which the substrate is placed. The substrate comprises: a set of printing elements arranged in a predetermined direction, the first logic circuit 104 located in accordance with the relevant groups each of which is designed for a specific number of adjacent printing elements, and made with the ability to choose the printing element for actuation of the printing elements that belong to each group; an actuation circuit 106 made with the ability of actuation the printing elements based on the signals output from the first logic circuit 104; the second logic circuit 105 made with the ability to supply from outside of input the printing data to the first logic circuits 104 corresponding to the respective groups; and means of storage the charges 108 located in the respective groups, connected with bus of power supply to provide power to at least one of the first logic circuits 104, the second logic circuits 105 and the actuation circuits 106 and made with the ability to store the charges in accordance with the voltage applied through the bus of power supply.

EFFECT: opportunity of effective suppression of the voltage fluctuation is provided due to the voltage drop between the ground bus and the bus of power supply of the second logic circuits or the drive circuits.

6 cl, 14 dwg

Printing device // 2256560

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

Printing device // 2318673

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

FIELD: chemistry.

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

FIELD: polygraphy.

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

Up!