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, digital proofing cannot realize WYSIWYG, and spot color digital proofing results cannot be achieved. Trust and other issues, to achieve the effect of high cost, long cycle, and reduce rework rate

Active Publication Date: 2012-08-15
TONGCHENG YUNCHENG PLATEMAKING
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  • 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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Effect test

Embodiment

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

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

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

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

[0033] 13) The engraved version rollers are stored in the concave sample workshop for standby, pay attention to the protection of the version rollers.

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

[0035] 21) Use the built-in Pantone spot color library to print spot color lad...

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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 issatisfied, 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 a spot color participating image. Background technique [0002] The traditional way to participate in spot color images before press is to simulate the spot color hue through CMYK four-color matching in Photoshop. The disadvantages of this approach are as follows: [0003] After the spot color is replaced by four color separations in Photoshop, the superimposed hierarchical relationship between spot color and color separation is lost before proofing. [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-mentioned shortcomings, the digital proofing of spot color participating images cannot realize what you see is what you get, which makes customers and prepress production personnel unable to trust the results of spot col...

Claims

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Application Information

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