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Digital sample printing method of spot color participation image

A digital proofing and spot color technology, which is applied in printing, rotary printing presses, printing machines, etc., can solve the problem that spot color hanging screen color simulation cannot be satisfied, the result of spot color digital proofing cannot be trusted, and digital proofing cannot realize WYSIWY Income and other problems, to achieve the effect of high cost, long cycle, and reduce rework rate

Active Publication Date: 2011-03-23
TONGCHENG YUNCHENG PLATEMAKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Even though the solid hue simulation of spot colors is relatively close, the simulation of spot colors and screen colors still cannot achieve satisfactory results
[0005] Due to the above shortcomings, the digital proofing of spot color images cannot achieve WYSIWYG, which makes customers and prepress production staff unable to trust the results of spot color digital proofing

Method used

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  • Digital sample printing method of spot color participation image
  • Digital sample printing method of spot color participation image
  • Digital sample printing method of spot color participation image

Examples

Experimental program
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Embodiment

[0029] The steps of this embodiment are as follows:

[0030] 1) Prepare the GMG spot color ladder version:

[0031] 11) Prepare the spot color ladder file before printing: It is recommended to use the built-in ladder file of GMG software, which can realize automatic measurement. like figure 1 ;

[0032] 12) Engraving spot color ladder: use the commonly used spot color electro-engraving process to engrave the ladder (such as genuine, pearl film reverse, aluminum foil reverse three types of electro-engraving process for engraving), different processes can be engraved on a plate roller , it is convenient for proofing;

[0033] 13) The engraved plate roll is stored in the concave workshop for spare use. Pay attention to the protection of the plate roll.

[0034] 2) Correct the difference between GMG built-in Pantone spot color library and concave sample:

[0035] 21) Use the built-in Pantone spot color library to print the digital sample of the spot color scale before printin...

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Abstract

The invention relates to a digital sample printing method of a spot color participation image, comprising the following steps of: preparing a GMG (Gif Movie Gear) spot color scale plate; correcting the difference between a GMG built-in Pantone spot color library and a gravure sample, including printing a spot color scale digital sample by using the built-in Pantone spot color library before printing; printing a spot color gravure sample by using the GMG spot color scale plate to make a field color value consistent with the digital sample; respectively measuring the dot area coverage rate or the density value of the spot color scale digital sample and the spot color gravure sample, and respectively generating a curve; and improving the effect of the spot color scale digital sample to make the two curves approximate as much as possible. The invention provides an adjustment basis for prepress staffs on the manuscript type of spot color participation electroanalysis, and the EPSON effect of using GMG sample printing is very approximate to the gravure sample printing effect; the prepress staffs can use EPSON sample printing to carry out accurate spot color simulate sample printing to realize color sample printing; the spot color simulated by digital sample printing is very approximate to the printing effect, and thereby, the sampling demand of clients on such type of manuscripts is satisfied, the rework rate is reduced and the cost is reduced.

Description

technical field [0001] The invention relates to a proofing method, in particular to a digital proofing method of spot color participating images. Background technique [0002] The traditional practice of prepress for spot color participation images is to simulate spot color hues in Photoshop by matching the CMYK quadrants. The disadvantages of this approach are as follows: [0003] After replacing the spot color with the quadratic color in Photoshop, the overlapping hierarchical relationship between the spot color and the color separation has been lost before proofing. [0004] Even if the solid hue simulation of the spot color is close, the simulation of the spot color hanging screen color still cannot achieve satisfactory results. [0005] Due to the above shortcomings, the digital proofing of spot color participation images cannot achieve WYSIWYG, which makes customers and prepress production personnel unable to trust the results of spot color digital proofing. SUMMAR...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F9/04
Inventor 宁建良
Owner TONGCHENG YUNCHENG PLATEMAKING
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