WO2020078004A1 - 一种适用于轻介质的打印方法及打印系统 - Google Patents

一种适用于轻介质的打印方法及打印系统 Download PDF

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Publication number
WO2020078004A1
WO2020078004A1 PCT/CN2019/088759 CN2019088759W WO2020078004A1 WO 2020078004 A1 WO2020078004 A1 WO 2020078004A1 CN 2019088759 W CN2019088759 W CN 2019088759W WO 2020078004 A1 WO2020078004 A1 WO 2020078004A1
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Prior art keywords
printing
color
standard
light
area
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PCT/CN2019/088759
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English (en)
French (fr)
Inventor
汤振华
彭俊甲
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广州精陶机电设备有限公司
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Publication of WO2020078004A1 publication Critical patent/WO2020078004A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

Definitions

  • the invention relates to the field of industrial printers, in particular, it is a printing method and printing system suitable for light media.
  • Heavy media such as ceramic tiles and glass have the characteristics of uniform surface arc and uniform composition.
  • the difference in the color and the permeability of the printing liquid is small.
  • the media itself has a low hardness, and is formed by bonding or pressing multiple layers of boards.
  • the actual performance of such printing media depends on the characteristics of the core paper and the outermost cardboard. Multi-layer cardboard connection structure. The factors that affect the printing effect are mainly concentrated on the outermost cardboard.
  • corrugated paper, synthetic paper and other light media are mainly used for commodity packaging. Therefore, the production process and accuracy requirements are not high.
  • the material of the outermost cardboard The difference with the manufacturing process will more easily lead to different liquid permeability and different shades of cardboard. When packaging with pure unpatterned corrugated paper or synthetic paper, consumers will not pay too much attention to color when making a single purchase The difference itself.
  • the present invention provides a printing method and printing system suitable for light media, which solves the problem of non-standard printing caused by different colors or different penetration rates when printing on light media, and is suitable for non-standard printing. Standard color light media printing.
  • the technical solution of the present invention is a printing method suitable for light media, which prints a primer, standard color and spot color on the surface of light media in sequence; the primer is used to adjust the printing performance of light media to the standard ;
  • the standard color is used to print the standard color in the light medium preset pattern;
  • the spot color is used to print the non-standard color in the light medium preset pattern, or used for tracking color, or for color registration, or for Distribute part of the larger amount of standard colors to the special area for printing; standard and non-standard colors constitute all colors of the light medium pattern.
  • Corrugated paper, synthetic paper and other light media are mainly used for packaging, publicity, etc., only need to use ink or ink for printing, its drying is faster, and no special drying area is required.
  • ink jet drops on the light medium, it will have a certain diffusion and penetration; when the ink is dried, the color effect of the light medium is also very different due to the differences in materials and processes. Therefore, in order to ensure the final ink The color rendering effect is consistent.
  • the print performance of the light medium needs to be adjusted to the standard. Print performance adjusted to standard.
  • the printing surface of the light medium is first covered with a primer, which is used to adjust the printing performance of the light medium to the standard, at least to ensure that all printing on the same soft medium
  • a primer which is used to adjust the printing performance of the light medium to the standard, at least to ensure that all printing on the same soft medium
  • the water absorption and diffusivity of the ink of the same formula are kept the same, so as to avoid the occurrence of staining of the intersecting borders when printing different colors, which will cause the soft media to be scrapped.
  • the transparent ink can be used as the primer, to keep the water absorption and diffusivity of the printing medium to the ink consistent, and can promote the adhesion performance of the subsequent ink and the medium, so that the color of the subsequent printing The effect is consistent; if the color of the printing surface is not uniform due to the unevenness of the soft media during synthesis, white ink can be used as the primer for printing, and the color of the printing surface of the soft media is adjusted to white, on the one hand, the printing surface of the soft media can be uniform On the other hand, using white as the base coat also facilitates the coloring and color dispersion of the subsequent preset patterns, and improves the color rendering effect.
  • the preset patterns are printed. According to different production needs, the colors of the patterns are also very different, but they can be divided into two categories: one is commonly used when printing or printing Standard colors, that is, CMYK colors composed of cyan, magenta (magenta), yellow, and black, can be reproduced by these four colors in printing.
  • spot color refers to increasing the color gamut of the printed pattern, such as orange can expand the color gamut of red
  • CMYK four-color machine use the printing machine to adjust each color Chopped ink volume and water to achieve the desired pattern color effect.
  • spot colors can also be used to distribute standard colors with a large amount of usage. When the amount of a color used in a standard color is large, part of the amount of this color can be adjusted to the spot color area.
  • the printing method of the present invention sequentially adds the standard color and the color used to print the process color (CMYK) in the light medium preset pattern in the post-coating step
  • the standard colors and non-standard colors are distinguished and divided into two steps, which do not interfere with each other; cooperate with the primer to make corrugated paper, synthetic paper and other light media
  • the pattern display effect is consistent, and it can be used for non-standard color printing, which improves the printing effect of soft media and enriches the printing pattern of soft media.
  • the printer works for a period of time, as the ink or impurities in the ink continue to accumulate at the print head, it may cause a certain print head to be clogged, or when one of the print heads fails, the print head may not work.
  • There will be "white dots” or “white lines” on the printing surface that is, there is no corresponding ink or ink on the route traveled by the faulty nozzle, which forms a strong contrast with the normally printed soft media.
  • undercoat printing the position of "white dot” or “white line” appears in the subsequent standard and spot color printing, due to the difference in ink or ink diffusion, the border is smudged or stained, which affects the presentation of the final pattern of the soft medium.
  • the primer, standard color, spot color or The protective color is printed at least twice, and is printed to the same position on the surface of the light medium by different nozzles on the printer.
  • the present invention also provides another technical solution, a printing system suitable for light media, the printing system includes a primer area, a color marking area, a spot color area, and sequentially penetrates and is located in the primer area, color marking area and special Conveying platform in the lower part of the color zone;
  • the primer area is used for printing primer on the surface of light medium
  • the color-coded area is used to print a standard color in a light medium preset pattern
  • the spot color area is used for printing a non-standard color in a preset pattern of light media, or for tracking color, or for color registration, or for allocating a part of the amount of color in the standard color with a larger amount to the special area for printing;
  • the conveying platform is used to carry light media through the primer zone, the color zone and the spot color zone in sequence.
  • the primer area used for primer printing, the target color area used for CMYK standard color printing and the spot color area used for non-standard color printing are sequentially arranged above the same conveying platform, so that the need Printed corrugated paper, synthetic paper and other light media pass through the primer area, the color marking area and the spot color area in turn, first cover the soft medium and print the primer completely, when the color of the soft medium is uniform, the transparent color can be used as the primer , Adjust the water absorption and permeability of the soft medium to be consistent; when the color of the soft medium is uneven, white ink can be used as the primer, and at the same time adjust the water absorption, permeability and surface color of the soft medium to be consistent, which is convenient for subsequent pre-preparation Let the pattern print.
  • the preset pattern is completely printed on the printing surface of the soft medium. While continuously completing all the printing work, it also solves the problem of inconsistent printing performance of the soft medium, making the final presentation
  • the printed pattern is exactly the same as the preset pattern, reducing the defective rate after printing on soft media.
  • the printing system further includes a protection area provided above the conveying platform and located behind the spot color area, for protecting the preset pattern after printing.
  • the primer area, the color marking area, the spot color area and the protection area are respectively provided with a plurality of printing modules, and each printing module is provided with at least one pair of full-format printing channels.
  • the printing system further includes a maintenance module for cleaning and moisturizing the printing nozzle; the number of the maintenance module and the printing module are the same.
  • a maintenance module for cleaning the nozzle and moisturizing the nozzle is provided in the printing system; in order to reduce the time for maintaining the nozzle, each printing module corresponds to a maintenance module.
  • the maintenance module is located between two printing modules, or the maintenance module is located between the printing module and the conveying platform.
  • the maintenance module is a tray structure with a sponge pad, and a moisturizing agent is adsorbed on the sponge, which can be used for moisturizing the printing nozzle.
  • the maintenance module can be set between the two printing modules, that is, along the direction of the soft media movement, the maintenance module can be set on each printing module Behind, when the print head needs to be maintained, move the print head in the print module to the sponge on the maintenance module, and apply pressure to the ink to make the ink become a high-pressure liquid to flush out. After the head is cleared, print The nozzle is lowered into the sponge to moisturize.
  • the maintenance module can be set between the printing module and the conveying platform.
  • the printing module is a box structure with a large opening on the bottom plate, and the printing nozzle is located In the lower part of the box, there is a gap between the printing module and the conveying platform.
  • the tray of the maintenance module can be inserted into the gap, and the printing nozzle can be inserted into the sponge by lifting, so that the printing nozzle is placed in the maintenance module to moisturize.
  • the maintenance module and the printing module are located at the same lateral position, and the printing module can enter the maintenance module through lateral translation.
  • the direction of printing movement of the soft media is defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction is the lateral direction.
  • a maintenance module can be set in the lateral position of each printing module, and the printing module can be translated horizontally into the maintenance module for cleaning and moisturizing;
  • the method can not occupy the length interval, and can even reduce the spacing between each printing module to 10cm; secondly, in order to ensure that the print head enters the maintenance module safely, the maintenance module has the same dimensions as the printing module, When using multiple printing modules for soft media printing, this method can greatly reduce the total length of the printer.
  • the docking structure includes a first slide rail provided on the printer frame and a second slide rail provided on the maintenance bracket for supporting the maintenance module.
  • the first slide rail and the second slide rail are provided with a matching interface, so that the two Maintain the same level.
  • the purpose of setting two slide rails is that the maintenance module can be retrieved or moved according to actual needs, which is more flexible than the fixed docking method.
  • the technical solution of the present invention divides the printing line into a primer area, a color marking area, a spot color area, and a protection area, and first standardizes the printing performance of the soft medium to facilitate subsequent preset pattern printing. Ensure the color rendering of the pattern, extend the color retention time of the printed pattern, improve the wear resistance of the color, and improve the yield rate of the soft medium after printing; by setting a maintenance device, the service life of the print head is extended, and the maintenance cost of the printing system is reduced .
  • FIG. 1 is a schematic structural diagram of a printing method and a printing system of the present invention.
  • Figure 2 is a schematic diagram of the structure of the conveying platform in the present invention.
  • FIG. 3 is another schematic structural diagram of the conveying platform in the present invention.
  • FIG. 4 is a schematic diagram of the position of the maintenance device in Embodiment 1 of the printing system of the present invention.
  • FIG. 5 is a schematic diagram of the position of the maintenance device in Embodiment 2 of the printing system of the present invention.
  • FIG. 6 is a schematic diagram of the position of the maintenance device in Embodiment 3 of the printing system of the present invention.
  • a printing method suitable for light media sequentially prints a primer, a standard color, and a spot color on the surface of the light media; the standard color and the spot color constitute all colors of the light medium pattern.
  • the primer is used to adjust the printing performance of the light medium to the standard; the printing performance includes the water absorption of the light medium to the printing liquid, the diffusibility of the printing liquid, and the consistency of the surface color of the light medium.
  • the printing performance is adjusted to the standard to ensure that the same formula has the same water absorption and diffusivity for the ink of the same formula, avoiding the appearance of intersecting borders when printing different colors Dyeing, etc.
  • the color of the printed surface can be adjusted to a uniform color, and white as the primer is also convenient for subsequent pre-coating Set the coloring and color divergence of the pattern to improve the color rendering effect.
  • the standard color is used to print the standard color in the preset pattern of light media, that is, the CMYK color composed of four colors of cyan, magenta (magenta), yellow, and black, which can be reproduced by these four colors in printing. Tens of thousands of colors.
  • the spot color is used for printing non-standard colors in the preset patterns of light media, or for tracking colors, or for color registration, or for allocating a part of the amount of color used in the standard color to a special area for printing.
  • the standard color is distinguished from the non-standard color and is divided into two steps, which do not interfere with each other; cooperate with the primer to make the pattern display effect of corrugated paper, synthetic paper and other light media consistent, and can be used for non-standard color printing, which improves The printing effect of soft media enriches the printing pattern of soft media.
  • the primer, standard color or spot color is printed in two times, and is printed to the same position on the surface of the light medium by different nozzle holes on the printer; the primer, standard color or spot color is printed in two times, each time
  • the print volume is 50% of the total.
  • each printing module is provided with at least one pair of full-format printing channels.
  • a printing method suitable for light media in which a primer, a standard color, a spot color, and a protective color are sequentially printed on the surface of the light medium; the standard color and the spot color constitute all colors of the light medium pattern.
  • the primer is used to adjust the printing performance of the light medium to the standard, and the printing performance includes the water absorption of the light medium to the printing liquid, the diffusibility of the printing liquid, and the consistency of the surface color of the light medium;
  • the standard color is used to print the light medium
  • the standard color in the preset pattern that is, the CMYK color composed of cyan, magenta (magenta), yellow, and black;
  • the spot color is used to print the non-standard color in the light medium preset pattern, or for Follow-up color, or for color registration, or for allocating a part of the larger amount of standard color to the special area for printing;
  • the protective color is used to extend the retention time of the standard color and / or spot color.
  • the base coat, standard color, spot color or protective color are printed in two and printed to the same position on the surface of the light medium by different nozzle holes on the printer; the base coat, standard color, spot color or protective color are divided in two Print, each print volume is 50% of the total.
  • each color in the primer area, color marking area, spot color area and protection area is provided with two printing modules, and each printing module is provided with at least one pair of full-format printing channels.
  • a printing system suitable for light media includes a primer area A, a color area B, a spot color area C, and sequentially penetrates and is located in the primer area A, the color area B, The conveying platform 100 at the lower part of the spot color zone C and the protection zone D; the primer zone A is used for printing the primer on the surface of light media;
  • the color-coded area B is used to print a standard color in a preset pattern of light media
  • the spot color area C is used to print a non-standard color in a light medium preset pattern, or to be used as a follow-up color, or to be used for color registration, or to allocate a part of the amount of color used in the standard color to a specific area for printing ;
  • the protection area D is used to add a protection color for extending the color retention time on the preset pattern of the printing medium
  • the conveying platform 100 is used to carry light media through the primer zone A, the color zone, the spot color zone C, and the protection zone D in sequence.
  • the conveying platform 100 includes at least two conveying mechanisms connected to each other.
  • the conveying mechanism includes a bracket 110, driving rollers 120 and driven rollers 130 disposed at both ends of the bracket 110, and a conveyor belt 140 surrounding the driving roller 120 and driven rollers 130.
  • All the driving roller 120 and the driven roller 130 must be kept parallel, but due to processing errors, the circumference of the belt on both sides The length is usually inconsistent.
  • the conveying mechanism further includes a pressing roller 150 disposed between the driving roller 120 and the driven roller 130 and in contact with the conveyor belt 140.
  • the pressing roller 150 may be disposed on the upper surface of the conveyor belt 140 or on the conveyor belt 140.
  • the lower surface; the two ends of the pressing roller 150 are movably connected to the front and back sides of the bracket 110, by adjusting the height of the two ends of the pressing roller 150 or one of the ends to eliminate the difference in the circumference of the two sides of the conveyor belt 140, so that the soft media is always along The same straight line runs.
  • the conveyor belt 140 inevitably deflects during the installation process.
  • the setting of the pressing roller 150 is convenient for adjusting the position of the conveyor belt 140 during the installation process.
  • the primer area A is provided with 2 printing modules 200
  • the color marking area B is provided with 4 printing modules 200
  • the spot color area C is provided with 2 printing modules 200
  • the protection area D is provided with 2 One printing module 200; each of the above printing modules 200 is provided with at least one pair of full-format printing channels.
  • the printing system further includes 10 maintenance modules 700 that can clean and moisturize the printing nozzles in the printing module 200, corresponding to 10 printing modules 200 respectively.
  • each maintenance module 700 is arranged behind each printing module 200.
  • the printing nozzle in the printing module 200 is moved to the maintenance module 700 .
  • This structure is suitable when the width of the installation space of the printer is limited and the length is not limited.
  • the printing system further includes 10 maintenance modules 700 that can clean and moisturize the printing nozzles in the printing module 200.
  • Each corresponds to 10 printing modules 200, and the maintenance module 700 is disposed between the printing module 200 and the conveying platform 100.
  • the printing module 200 is a box structure with a large opening on the bottom plate, the printing nozzle is located at the lower part of the box, the printing module 200 and the conveying platform There is a gap between 100;
  • the maintenance module 700 is a tray with a sponge pad. The tray can be inserted into the gap 800, and the print head can be inserted into the sponge by lifting, so that the print head is placed in the maintenance module 700 for cleaning and moisturizing.
  • This structure is suitable when the installation space of the printer is small, but the height is large.
  • the printing system further includes 10 maintenance modules 700 that can clean and moisturize the printing nozzles in the printing module 200.
  • 10 printing modules 200 Corresponding to 10 printing modules 200 respectively.
  • a maintenance module 700 and a printing module 200 are taken as an example to illustrate this embodiment: the maintenance module 700 and the printing module 200 are located at the same lateral position, and are arranged beside the printing bracket 110 through the maintenance bracket 500.
  • the maintenance bracket 110 is provided with a lifting device for adjusting the relative height of the maintenance module 700 and the printing module.

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Abstract

一种适用于轻介质的打印方法和打印系统，所述方法是在轻介质表面依次打印底涂、标准色和专色；所述底涂用于将轻介质的打印性能调整至标准；所述标准色用于打印轻介质预设图案中的标准色；所述专色用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印。所述打印系统包括用于在轻介质表面打印底涂的底涂区、用于打印轻介质预设图案中的标准色的标色区、用于打印轻介质预设图案中的非标准色的专色区和用于承载轻介质依次经过底涂区、颜色区和专色区的输送平台。所述方法和系统解决了轻介质打印时颜色不同或渗透率不同而导致的打印不标准的问题，且适用于非标准色的轻介质打印。

Description

一种适用于轻介质的打印方法及打印系统 技术领域
本发明涉及工业打印机领域，具体的说，是一种适用于轻介质的打印方法及打印系统。
背景技术
工业打印机被广泛应用在瓷砖、玻璃等加工产业上，通过打印的方式将釉料打印至瓷砖的砖胚或玻璃上，然后再进行烧制，烧制后釉料颜色和质感即会变化成色。
瓷砖、玻璃等重介质具有表面光弧度一致，成分一致的特点，其上色度和打印液体的渗透率差异较小，对于不同批次的瓷砖、玻璃等进行打印时，只要注意打印液体颜色的调配即可实现理想的上色度一致的完整图案。
但对于瓦楞纸、合成纸等轻介质而言，介质本身的硬度较低，且采用多层板粘合或压制而成，此类打印介质的实际表现取决于芯纸和最外层纸板的特性和多层纸板的连接结构。影响打印效果呈现的因素主要集中在最外层纸板上，一般来讲，瓦楞纸、合成纸等轻介质主要用于商品包装等，因此，其制作工艺和精度要求不高，最外层纸板的材料和制作工艺的差别会更容易导致其对液体的渗透率不同、纸板颜色深浅不同，当采用纯的无图案的瓦楞纸或合成纸进行包装时，消费者在进行单一购买时，不会过于注重颜色本身的差异。但随着市场竞争的加大，越来越多的商家通过在包装上施加图案等进行商品区分或宣传，此时，若采用渗透率不同、颜色不同的瓦楞纸、合成纸等轻介质进行图案打印时，会出现每个轻介质同一位置的图案颜色深浅各不相同，甚至同一块轻介质上同一颜色的最终呈现效果也大不相同，而消费者的视线会集中在印有图案的包装，此时打印图案后的瓦楞纸、合成纸等轻介质用于产品包装或宣传时，效果不理想。
其次，当瓦楞纸、合成纸等轻介质用于包装或宣传时，图案的色彩较为丰富，根据实际的用途，往往会在小范围采用非标准色，即不在印刷四色模式(CMYK)内的其他颜色，如金黄色、粉红色等，此时若在原有的打印机上腾出一个区用于非标准色的打印，则会导致原有印刷四色模式的打印不充分，需要工人频繁的添加或注入打印液体，浪费人力资源；因此，亟需一种适用于轻介质的打印方法或系统。
发明内容
有鉴于此，本发明为解决上述问题，提供一种适用于轻介质的打印方法及打印系统，解决了轻介质打印时颜色不同或渗透率不同而导致的打印不标准的问题，且适用于非标准色的轻介质打印。
本发明的技术方案是，一种适用于轻介质的打印方法，所述方法在轻介质表面依次打印底涂、标准色和专色；所述底涂用于将轻介质的打印性能调整至标准；所述标准色用于打印轻介质预设图案中的标准色；所述专色用于打印轻介质预设图案中的非标准色、或用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印；标准色和非标准色构成轻介质图案的全部颜色。
瓦楞纸、合成纸等轻介质主要用作包装、宣传等，只需要采用油墨或墨水进行打印即可，其干化较快，无需特别设置烘干区。当油墨喷绘滴落在轻介质上时，会产生一定的扩散、渗透；当油墨干燥后，轻介质由于材料和工艺造成的差异，其显色效果也大不相同，因此，为了保证最后油墨的显色效果一致，在正式打印预设图案前，需要将轻介质的打印性能调整至标准，即将包括轻介质对于打印液体的吸水性、打印液体扩散性、轻介质表面颜色的一致性在内的打印性能调整至标准。
在本技术方案中，在正式打印预设图案前，首先在轻介质的打印表面覆盖一层底涂，用于将轻介质的打印性能调整至标准，至少保证在同一块软介质上的所有打印表面上，对同一配方的油墨的吸水性和扩散性保持一致，避免打印不同颜色时相交边界出现染色等会造成软介质报废的情况发生。若软介质表面的颜色均匀一致时，可采用透明油墨作为底涂，将打印介质对油墨的吸水性和扩散性保持一致，且可以促进后续的墨水与介质的粘合性能，使后续打印色彩的效果一致；若软介质在合成时不均匀导致的打印表面颜色不均匀的情况，可采用白墨作为底涂进行打印，将软介质的打印表面颜色调整至白色，一方面可以均匀软介质的打印底涂，另一方面以白色作为底涂也便于后续预设图案的上色和颜色发散，提高显色效果。
当软介质的打印性能调整至标准后，再进行预设图案的打印，根据生产的不同需求，构成图案的颜色也大不相同，但可以分为两类：一是现在打印或印刷时常用的标准色，即由青、洋红(品红)、黄、黑四种色彩构成的CMYK色，在印刷中可由这四种色彩再现其它成千上万种色彩；二是无法通过CMYK色再现的其他颜色或用于追色或套色的部分称为专色；所述追色是指增加打印图案的色域，如橙色可以扩充红色的色域；在CMYK四色上机时，使用印刷机调整每剁的墨量和水，达到想要的图案颜色效果。其次，专色也可用于分摊用量较大 的标准色，当标准色中某一颜色的使用量较大时，可将此颜色的部分用量调整至专色区。
每种专色在打印时需要使用专用的打印喷头，从而，本发明的打印方法在底涂后的步骤中依次增加了用于打印轻介质预设图案中印刷色(CMYK)的标准色和用于打印轻介质预设图案中非标准色的专色，将标准色与非标准色区分开来，分为两个步骤，互相不干扰；与底涂配合，使瓦楞纸、合成纸等轻介质的图案显示效果一致，且可用于非标准色的打印，提高了软介质的打印效果、丰富了软介质的打印图案。
进一步地，当采用挥发性、色彩维持时间较短的水性染料墨水打印时，打印好的软介质经过长途运输或折叠等，水性染料墨水的发散或软介质表面的磨损会造成颜色损失甚至完全破坏原有的打印图案，丧失包装宣传效果，因此，为延长标准色和/或专色的保留时间，在专色后增加保护色的打印。
进一步地，在打印机工作一段时间后，随着油墨或墨水中的杂质不断聚集在打印喷头处，有可能造成某一个打印喷头堵塞，或当其中一个喷头故障时，导致喷头无法工作，此时，在打印表面会出现“白点”或“白线”，即该故障喷头所行进的路线上并无相应油墨或墨水，与正常打印的软介质形成较为强烈的对比。在进行底涂打印时，出现“白点”或“白线”的位置在后续标准色和专色打印时，由于油墨或墨水扩散度不同导致边界晕染或染色，影响软介质最终图案的呈现效果；在进行标准色或专色的打印时，出现“白点”或“白线”会导致图案不完整；在进行保护色打印时，出现“白点”或“白线”的位置颜色发散和磨损相对较快，也会连带的影响周边颜色；无论出现哪一种缺陷，该软介质都会沦为报废品，因此，为提高软介质打印的成品率，将底涂、标准色、专色或保护色至少分两次打印，并由打印机上的不同喷孔打印到轻介质表面的同一位置，即使某一次打印出现故障，其他打印也能弥补此种缺陷；但打印次数过多，会降低打印速度，且打印喷头的增多会导致打印机成本大大增加，因此，从提高打印速度和降低成本的角度出发，设置底涂、标准色、专色或保护色分两次打印，每次的打印量为总量的50％。
本发明还提供另一种技术方案，一种适用于轻介质的打印系统，所述打印系统包括底涂区、标色区、专色区和依次贯穿并位于底涂区、标色区和专色区下部的输送平台；
所述底涂区用于在轻介质表面打印底涂；
所述标色区用于打印轻介质预设图案中的标准色；
所述专色区用于打印轻介质预设图案中的非标准色、或用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印；
所述输送平台用于承载轻介质依次经过底涂区、颜色区和专色区。
在本技术方案中，将用于底涂打印的底涂区、用于CMYK标准色打印的标色区和用于非标准色打印的专色区的依次设置在同一个输送平台上方，使需要打印的瓦楞纸、合成纸等轻介质依次经过底涂区、标色区和专色区，先在软介质上全面覆盖打印好底涂，当软介质的颜色统一时，可采用透明色作为底涂，将软介质的吸水性和渗透性调整到一致；当软介质的颜色不均时，可采用白墨作为底涂，同时调整软介质的吸水性、渗透性和表面颜色到一致，便于后面进行预设图案打印。当软介质经过标色区和专色区后，预设图案完全打印在软介质的打印表面，连续性的完成全部打印工作的同时，也解决了软介质打印性能不一致的问题，使最终呈现的打印图案与预设图案完全一致，降低软介质打印后的次品率。
进一步地，所述打印系统还包括设置在输送平台上方且位于专色区之后的保护区，用于保护打印后的预设图案。
当采用水性染料墨水进行打印时，由于水性染料墨水的颜色保存时间较短，在运输和包装过程中，颜色不耐磨，容易造成图案颜色褪色甚至是图案缺损，为避免由此造成的包装宣传效果查，可在专色打印完成后增加一个保护区，通过在打印表面上全面覆盖一层透明保护色，延长水性染料墨水颜色的保留时间，提高颜色的耐磨性。
进一步地，所述底涂区、标色区、专色区和保护区分别设有若干打印模组，每个打印模组设有至少一对全幅面打印通道。
当打印机的打印喷头由于墨水中杂质堵塞或故障时，会在打印表面出现“白点”或“白线”，使软介质打印后成为残次品，为了降低出现“白点”或“白线”的概率，可以采用N组全幅面打印通道的方式打印同一区域图案的方式，每个打印通道的打印模量为打印总墨量的1/N。当其中一个打印通道的某个打印喷头出现堵塞或故障，其他打印通道的相同位置的打印喷头可正常打印，覆盖“白点”或“白线”，只要打印通道的数量足够，出现“白点”或“白线”的几率就越小；但由于打印喷头价格昂贵，且通道过多会占用工厂面积和延长打印时间，因此，从经济型角度出发，设置底涂、标准色、专色或保护色的每个颜色设有两个打印模组，将每个颜色分两次打印，每次的打印量为总量的50％。
进一步地，所述打印系统还包括维护模组，进行打印喷头的清洗和保湿；所述维护模组与打印模组数量相同。
为降低喷头堵塞的几率，在打印系统内设置用于清洗喷头和对喷头进行保湿的维护模组；为了减小维护喷头的时间，每一个打印模组对应设置一个维护模组。
进一步地，所述维护模组位于两个打印模组之间，或维护模组位于打印模组与输送平台之间。
更进一步地，所述维护模组为带海绵铺垫的托盘结构，海绵上吸附有保湿剂，可用于打印喷头的保湿。
若打印机的安装空间宽度受限、长度不受限时，可将维护模组设置在两个打印模组之间，即沿着软介质运动的方向，将维护模组设置在每个打印模组的后面，当打印喷头需要进行维护时，将打印模组中的打印喷头移动到维护模组上的海绵上，通过向墨水施加压力，使墨水变成高压液体冲出，喷头疏通后，将打印喷头整体下降至海绵内，进行保湿。
若打印机的安装空间较小，但高度较大时，可将维护模组设置在打印模组与输送平台之间，在此结构中，打印模组为底板大开口的箱体结构，打印喷头位于箱体下部，打印模组与输送平台之间具有间隙，维护模组的托盘可插入间隙中，打印喷头可通过升降插入海绵中，使得打印喷头放置在维护模组内进行保湿。
进一步地，所述维护模组与打印模组位于同一横向位置，打印模组可以通过横向平移进入维护模组内。
将软介质的打印运动方向定义为纵向，则与纵向垂直的为横向。当打印机的安装空间宽度不受限、长度受限时，可在每个打印模组的横向位置设置一个维护模组，打印模组可以整体横向平移到维护模组内进行清洗和保湿；此种方式可以不占用长度区间，甚至可以将每个打印模组之间的间距缩减至10cm；其次，为了保证打印喷头安全的进入维护模组，所述维护模组的外形尺寸与打印模组一致，当采用多个打印模组进行软介质打印时，采用此种方式可以大大缩减打印机的总长。
进一步地，可以通过在打印模组与维护模组之间设置对接结构，保证维护模组与打印模组的精准平移，缩短打印模组平移至维护模组的时间；更进一步地，所述对接结构包括设置在打印机机架上的第一滑轨和设置在用于支撑维护模组的维护支架上的第二滑轨，第一滑轨和第二滑轨之间设有对接口，使二者维持在同一水平线上。设置两个滑轨的目的在于，可根据实际需求调取或移动维护模组，比采用固定式的对接方式更为灵活。
与现有技术相比，，本发明的技术方案将打印线分为底涂区、标色区、专色区和保护区，先将软介质的打印性能标准化，便于后续进行预设图案打印，保证图案的显色性，延长了打印图案的颜色留存时间、提高颜色的耐磨性，提高软介质打印后的出品率；通过设置维护装置，延长打印喷头的使用寿命，降低打印系统的维护成本。
附图说明
图1为本发明打印方法和打印系统的结构示意图。
图2为本发明中输送平台的结构示意图。
图3为本发明中输送平台的另一结构示意图。
图4为本发明打印系统实施例1中维护装置位置示意图。
图5为本发明打印系统实施例2中维护装置位置示意图。
图6为本发明打印系统实施例3中维护装置位置示意图。
具体实施方式
下面结合具体实施方式对本发明作进一步的说明。其中，本发明实施例附图中相同或相似的标号对应相同或相似的部件，仅用于示例性说明，不能理解为对本发明的限制；为了更好地说明本发明的实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；本发明中实施例术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，而不是指示或暗示所指的装置或元件必须具有特定的方位或以特定的方位构造，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。
方法实施例1
如图1所示，一种适用于轻介质的打印方法，所述方法在轻介质表面依次打印底涂、标准色和专色；标准色和专色构成轻介质图案的全部颜色。
所述底涂用于将轻介质的打印性能调整至标准；打印性能包括轻介质对于打印液体的吸水性、打印液体扩散性、轻介质表面颜色的一致性。通过在轻介质的打印表面覆盖一层透明底涂，将打印性能调整至标准，保证在同一打印表面上，对同一配方的油墨的吸水性和扩散性保持一致，避免打印不同颜色时相交边界出现染色等会造成软介质报废的情况发生；通过采用白墨作为底涂，调整软介质吸水性和渗透性的同时，还能将打印表面的颜色调整至均色，且白色作为底涂也便于后续预设图案的上色和颜色发散，提高显色效果。
所述标准色用于打印轻介质预设图案中的标准色，即由青、洋红(品红)、黄、黑四种色彩构成的CMYK色，在印刷中可由这四种色彩再现其它成千上万种色彩。
所述专色用于打印轻介质预设图案中的非标准色、或用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印，将标准色与非标准色区分开来，分为两个步骤，互相不干扰；与底涂配合，使瓦楞纸、合成纸等轻介质的图案显示效果一致， 且可用于非标准色的打印，提高了软介质的打印效果、丰富了软介质的打印图案。
优选地，所述底涂、标准色或专色分两次打印，并由打印机上的不同喷孔打印到轻介质表面的同一位置；底涂、标准色或专色分两次打印，每次的打印量为总量的50％。
优选地，所述底涂区、标色区和专色区内的每个颜色均设有两个打印模组，每个打印模组设有至少一对全幅面打印通道。
方法实施例2
如图1所示，一种适用于轻介质的打印方法，所述方法在轻介质表面依次打印底涂、标准色、专色和保护色；标准色和专色构成轻介质图案的全部颜色。
所述底涂用于将轻介质的打印性能调整至标准，打印性能包括轻介质对于打印液体的吸水性、打印液体扩散性、轻介质表面颜色的一致性；所述标准色用于打印轻介质预设图案中的标准色，即由青、洋红(品红)、黄、黑四种色彩构成的CMYK色；所述专色用于打印轻介质预设图案中的非标准色、或用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印；所述保护色用于延长标准色和/或专色的保留时间。
优选地，所述底涂、标准色、专色或保护色分两次打印，并由打印机上的不同喷孔打印到轻介质表面的同一位置；底涂、标准色、专色或保护色分两次打印，每次的打印量为总量的50％。
优选地，所述底涂区、标色区、专色区和保护区内的每个颜色均设有两个打印模组，每个打印模组设有至少一对全幅面打印通道。
系统实施例1
如图1所示，一种适用于轻介质的打印系统，所述打印系统包括底涂区A、标色区B、专色区C和依次贯穿并位于底涂区A、标色区B、专色区C和保护区D下部的输送平台100；所述底涂区A用于在轻介质表面打印底涂；
所述标色区B用于打印轻介质预设图案中的标准色；
所述专色区C用于打印轻介质预设图案中的非标准色、或用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印；
所述保护区D用于在打印介质预设图案上增加用于延长颜色保留时间的保护色；
所述输送平台100用于承载轻介质依次经过底涂区A、颜色区、专色区C和保护区D。
由于整个系统沿传送方向的跨度较大，传输平台的长度也有较高的要求，但用来传送软介质的传送带140的长度一般很难达到这个长度要求，为此，如图2及图3所示，所述输 送平台100包括至少两个相互对接的传送机构。所述传送机构包括支架110、设置于支架110两端的主动辊120和从动辊130、环绕所述主动辊120和从动辊130的传送带140。为保证软介质得到准确定位后传送到四个分区进行打印时都能够保持最初的准确定位，所有主动辊120和从动辊130都要保持平行，但是由于加工误差的存在，皮带两侧的周长通常是不一致的，即使强制张紧使其变形，运行过程中传送带140会逐渐跑偏，坯体也会跟着跑偏，导致前后工序难以对应，影响瓷砖的质量。为此，所述传送机构还包括设置在主动辊120和从动辊130之间并与传送带140接触配合的压辊150，压辊150可以设置在传送带140上表面，也可设置在传送带140的下表面；所述压辊150两端分别活动连接于所述支架110前后两侧，通过调节压辊150两端或其中一端的高度以消除传送带140两侧的周长差，使软介质始终沿同一直线运行，此外，传送带140在安装过程中难免出现偏摆的情况，压辊150的设置便于在安装过程中调整传送带140的位置。
优选地，所述底涂区A设有2个打印模组200、标色区B设有4个打印模组200、专色区C设有2个打印模组200、保护区D设有2个打印模组200；以上每个打印模组200设有至少一对全幅面打印通道。
如图4所示，所述打印系统还包括可以对打印模组200内的打印喷头进行打印喷头的清洗、保湿的10个维护模组700，分别对应10个打印模组200。沿着软介质运动的方向，将每个维护模组700设置在每个打印模组200的后面，当打印喷头需要进行维护时，将打印模组200中的打印喷头移动到维护模组700中。此种结构适用于打印机的安装空间宽度受限、长度不受限时。
系统实施例2
本实施例与系统实施例1的区别仅在于，如图5所示，所述打印系统还包括可以对打印模组200内的打印喷头进行打印喷头的清洗、保湿的10个维护模组700，分别对应10个打印模组200，维护模组700设置在打印模组200与输送平台100之间。
以一个打印模组200和一个维护模组700为例说明本实施例中的维护结构：打印模组200为底板大开口的箱体结构，打印喷头位于箱体下部，打印模组200与输送平台100之间具有间隙；维护模组700为带海绵铺垫的托盘，托盘可插入间隙800中，打印喷头可通过升降插入海绵中，使得打印喷头放置在维护模组700内进行清洗和保湿。此种结构适用于打印机的安装空间较小，但高度较大时。
系统实施例3
本实施例与系统实施例1的区别仅在于，如图1所示，所述打印系统还包括可以对打印模组200内的打印喷头进行打印喷头的清洗、保湿的10个维护模组700，分别对应10个打印模组200。
如图6所示，以一个维护模组700与打印模组200为例说明本实施例：维护模组700与打印模组200位于同一横向位置，通过维护支架500设置在打印支架110旁，所述维护支架110设有升降装置，用来调节维护模组700与打印模组的相对高度。所述打印机机架400上的第一滑轨610和设置在用于支撑维护模组700的维护支架上的第二滑轨620，第一滑轨610和第二滑轨620之间设有对接口，使二者维持在同一水平线上。
显然，本发明虽然以上述实施例公开，但并不是对本发明的限定。任何本领域的普通技术人员在不脱离本发明的精神和范围内，在上述说明的基础上都可以做出可能的变化和修改。因此，本发明的保护范围应当以本发明的权利要求书所界定的范围为准。

Claims (10)

  1. 一种适用于轻介质的打印方法，其特征在于，所述方法在轻介质表面依次打印底涂、标准色和专色；所述底涂用于将轻介质的打印性能调整至标准；所述标准色用于打印轻介质预设图案中的标准色；所述专色用于打印轻介质预设图案中的非标准色、或用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印；标准色和非标准色构成轻介质图案的全部颜色。
  2. 根据权利要求1所述的一种适用于轻介质的打印方法，其特征在于，所述打印性能包括轻介质的对于打印液体的吸水性、打印液体扩散性、轻介质表面颜色的一致性。
  3. 根据权利要求1或2所述的一种适用于轻介质的打印方法，其特征在于，所述打印方法还包括在专色后增加保护色，用于延长标准色和/或专色的保留时间。
  4. 根据权利要求3所述的一种适用于轻介质的打印方法，其特征在于，所述底涂、标准色、专色或保护色至少分两次打印，并由打印机上的不同喷孔打印到轻介质表面的同一位置。
  5. 一种适用于轻介质的打印系统，其特征在于，所述打印系统包括底涂区、标色区、专色区和依次贯穿并位于底涂区、标色区和专色区下部的输送平台；
    所述底涂区用于在轻介质表面打印底涂；
    所述标色区用于打印轻介质预设图案中的标准色；
    所述专色区用于打印轻介质预设图案中的非标准色、或用于追色、或用于套色、或用于将标准色中的用量较大的颜色用量分配一部分至专区打印；
    所述输送平台用于承载轻介质依次经过底涂区、颜色区和专色区。
  6. 根据权利要求5所述的一种适用于轻介质的打印系统，其特征在于，所述打印系统还包括设置在输送平台上方且位于专色区之后的保护区，用于保护打印后的预设图案。
  7. 根据权利要求6所述的一种适用于轻介质的打印系统，其特征在于，所述底涂区、标色区、专色区和保护区分别设有若干打印模组，每个打印模组设有至少一对全幅面打印通道。
  8. 根据权利要求7所述的一种适用于轻介质的打印系统，其特征在于，所述打印系统还包括维护模组，进行打印喷头的清洗和保湿；所述维护模组与打印模组数量相同。
  9. 根据权利要求8所述的一种适用于轻介质的打印系统，其特征在于，所述维护模组位于两个打印模组之间，或维护模组位于打印模组与输送平台之间。
  10. 根据权利要求8所述的一种适用于轻介质的打印系统，其特征在于，所述维护模组与打印模组位于同一横向位置，打印模组可以通过横向平移进入维护模组内。
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