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Multi-level printing system control method based on optimum ink utilization

A technology of printing system and control method, which is applied in the direction of image communication, electrical components, etc., can solve the problems that the color characteristics of the base color cannot be considered, the ink volume utilization cannot be realized, and the screen screening process is out of touch, so as to achieve the best utilization, ensure the maximum, Guarantee the effect of color gamut

Active Publication Date: 2015-01-28
SHANGHAI PUBLISHING & PRINTING COLLEGE +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing multi-level control process is out of line with the color conversion and screening process, and the dot level is divided by the dot area ratio of the image pixel, which cannot take into account the color characteristics of each primary color, and cannot achieve the best ink utilization.

Method used

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  • Multi-level printing system control method based on optimum ink utilization
  • Multi-level printing system control method based on optimum ink utilization
  • Multi-level printing system control method based on optimum ink utilization

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Embodiment

[0037] figure 2 It is a flowchart of the control of the multi-level seven-color printing system in the embodiment of the present invention.

[0038] figure 2 It is a representation diagram of different levels of screen dot output levels in the ab space of the color scale in the embodiment of the present invention.

[0039] image 3 It is a flow chart of the single-channel ink volume limit algorithm in the embodiment of the present invention.

[0040] like figure 1 As shown, the multi-level seven-color printing system control has the following steps:

[0041] Step A: color-separate the chroma (Lab) image in the chroma (Lab) color space, and convert it into a second digital image in the 4+N channel color space. The number N of spot colors is determined by the hardware configuration of the printing system. In this embodiment, it is the printing color mode (CMYK+RGB), that is, 3 spot colors including RGB color mode, and a total of 7 colors are taken as an example.

[0042]...

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Abstract

The invention provides a multi-level printing system control method based on optimum ink utilization. The multi-level printing system control method comprises the following steps that (A) color separation is conducted on a chromaticity (Lab) image of a chromaticity (Lab) color space, and a second digital image of a 4+N channel digital image is obtained through conversion; (B) the second digital image is converted into a third digital image and a net point level description file through a net point level conversion model; (C) screening is conducted on the third digital image through a second-level screening method, and a 1-bit label image file format file is obtained after screening; (D) consolidation is conducted on the 1-bit label image file format file and the net point level description file, and N grayscale label image file format images are obtained; (E) information of the grayscale label image file format images is converted into a printing system control instruction through the printing system description language, and output of a printing system is controlled.

Description

technical field [0001] The invention relates to the field of printing system control, in particular to a control method for a multi-level printing system based on optimal use of ink volume for controlling the multi-level printing system to print with optimal ink volume in the field. Background technique [0002] The control process of the traditional multi-level printing system realizes the determination of the dot level through the multi-level screening algorithm. The core idea of ​​the process is to process the image of each channel after color separation as a grayscale image, and only according to the dot area ratio of the pixel Divide the level of outlets, the larger the area ratio of outlets, the higher the grade of outlets. Through research in this paper, it is found that the color characteristics of each base color are not the same, the amount of inkjet required to achieve the best output is different, the dot area ratio is different, and the dot level is also differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/23H04N1/50H04N1/60
CPCH04N1/50H04N1/6008H04N1/605
Inventor 杨晟炜顾萍于明伟孔玲君田全慧方恩印钱志伟
Owner SHANGHAI PUBLISHING & PRINTING COLLEGE
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