An inkjet printing device and printing method

An ink jet printing device and jet printing technology, applied in printing and other directions, can solve the problems of slow printing speed, increased depth of printing carriage, large printing nozzle, etc., and achieve the effect of reducing speckle

Active Publication Date: 2016-06-29
BEIJING MEIKEYI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 and figure 2 As shown, a white ink print head is installed at the front end and rear end of the color ink print head. The disadvantage of this method is that the depth of the bottom plate where the print head is installed is relatively large, and the depth of the printing carriage also increases.
[0006] Invention patent WO2006 / 078799 proposes an inkjet printing device and printing method, such as image 3 As shown, in this invention, two sets of coaxial nozzles are used to print color ink or white ink in two or three sections respectively. Due to the low utilization rate of nozzle holes of the nozzles, the printing speed is slow
[0007] Invention patent US2005 / 0162451A1 also proposes an inkjet printing device and printing method, such as Figure 4 As shown, in this invention, the nozzles for ejecting inks of different colors are arranged vertically, and the nozzle arrangement occupies a wide area, and the requirements for the bottom plate and the trolley are relatively high.
[0008] Using the conventional inkjet printing method to print the light box cloth, the concentration of the color of the single-layer image is just right during the day, but at night under the illumination of the light, the image color will be lighter. The method of the prior art is to print the same image twice. Increase the density of the color. In this way, the color density of the image is just right under the light at night, but the density of the image color is too strong during the day

Method used

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  • An inkjet printing device and printing method
  • An inkjet printing device and printing method
  • An inkjet printing device and printing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The printing device of the dual-image mode in the multi-channel printing mode is shown in Figure 5. In this mode, the printing carriage is controlled to move back and forth vertically in the paper-feeding direction. The first row of color ink nozzles, the second row of coated ink nozzles and the third row All the color ink nozzles in the row are printing. When printing, the control system controls the ink from the color ink nozzles c1, m1, y1, k1 to spray the first print image on the printing medium, and then controls the second row of coated ink nozzles w1, w2 to spray The white ink is on the first printed image, and finally the third row of color ink nozzles c2, m2, y2, k2 is controlled to spray the second printed image on the white ink layer. The first printed image and the second printed image in the present invention may be the same image or different images.

[0053] When the printing medium is a translucent medium, such as when printing a light box cloth, the fir...

Embodiment 2

[0056] Figure 7 It is a schematic diagram of foreground color printing in multi-channel printing mode. In this mode, the control system controls the printing carriage to move back and forth vertically in the direction of paper feeding. The first row of color ink nozzles and the second row of coated ink nozzles perform printing work, and the third row Color ink nozzles are not working. The moving direction of the printing medium is shown in the figure. The control system controls the first color ink nozzle c1, m1, y1, k1 to spray the printed image onto the printing medium, and then controls the second row of coated ink nozzles w1, w2 to spray the coated ink to on the printed image. The printing medium in this mode is transparent, such as glass.

Embodiment 3

[0058] Figure 8 It is a schematic diagram of background color printing in multi-channel printing mode. In this mode, the printing carriage is controlled to move back and forth vertically in the direction of paper feeding. The third row of color ink nozzles and the second row of coated ink nozzles perform printing work. The first row of color ink nozzles Not working. When printing, the control system controls the second row of coated ink nozzles w1, w2 to spray the coated ink onto the printing medium, and then the third row of colored ink nozzles c2, m2, y2, k2 sprays the printed image on the coated ink . Usually the printing medium for background color printing is non-white. In order to increase the vividness of the color, a layer of white ink is first printed on the non-white printing medium. The coating ink of the present invention can also be one-color ink according to actual needs.

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PUM

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Abstract

The invention discloses an inkjet printing device comprising at least one spray head for spraying coating ink; a plurality of spray heads for spraying color ink; a control system for controlling the work of each spray head; it is characterized in that the coating ink spray head and The color ink nozzles are arranged in three rows, and the number of ink nozzles spraying the same color is equal. The first row is the color ink nozzles, the second row is the coated ink nozzles, and the third row is the color ink nozzles. The control system controls the first The first row of color ink nozzles, the second row of coated ink nozzles, and the third row of color ink nozzles perform inkjet work at the same time to realize the dual image printing mode. The present invention can realize printing modes such as foreground color printing, background color printing, double-image printing and double-speed color printing by controlling the ink-jet work of the coating ink nozzle and the color ink nozzle; the images in the dual-image printing mode can be the same, It can be different. When there are two identical images, the transparency of one of the images can be adjusted.

Description

technical field [0001] The invention relates to an inkjet printing device, in particular to an inkjet printing device capable of realizing multiple printing modes and a printing method thereof. Background technique [0002] Inkjet printing sprays ink droplets onto the printing medium through the nozzle to form the desired printed image. The observer sees that each ink or combination of inks has a specific color (eg yellow, cyan, magenta, etc.) on the print medium. This requires that the printed image should preferably be printed on a white or near-white printing medium to ensure that the color on the final printed image seen by the observer is correct, otherwise, the image seen by the observer will be interfered by the color at the bottom of the printed image. [0003] Therefore, in order to print a color image on a non-white printing medium (eg, a color printing medium or a transparent printing medium), generally before printing a color image, a layer of white ink needs to...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B41J2/21B41J2/01
CPCB41J2/145B41J2/2114B41J2/2117B41J2/21
Inventor张原
OwnerBEIJING MEIKEYI