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High-fidelity spot color number hard proofing method

A spot color and digital technology, applied in image communication, electrical components, etc., can solve the problems of high cost, long cycle, low efficiency, etc., and achieve the effect of high reproduction accuracy, strong applicability, and increased speed

Active Publication Date: 2014-04-23
HANGZHOU DAILY PRESS GRP SHENGYUAN PRINTING CO LTD
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Problems solved by technology

[0003] At present, there are two types of spot color proofing at home and abroad: the actual printing of spot color proofing by printing machines and the simulation of actual spot color proofing by digital hard proofing systems. The former has problems such as long cycle, high cost and low efficiency, while the latter has problems with spot color library Problems such as low matching accuracy, poor repeatability and complicated operation steps in actual proofing are difficult to meet the actual production and application requirements of spot color hard proofing

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  • High-fidelity spot color number hard proofing method

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with accompanying drawing.

[0032] Such as figure 1 As shown, a high-fidelity spot color digital hard proofing method specifically includes the following steps:

[0033] Step 1. Establish a spot color hard proofing color block guide table parameter control database;

[0034] According to the proofing characteristics of hard proofing equipment at home and abroad, the position of different spot colors in the color gamut space and the control standard of color difference of spot color hard proofing data, set the parameter control database of the color block guide table of spot color hard proofing.

[0035] Step 2. Proof the spot color with hard proofing equipment and evaluate the effect of the spot color

[0036] 2-1. Utilize printing general color management software to control hard proofing equipment for spot color proofing;

[0037] 2-2. After the spot color proofing sheet is completed and dried, t...

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Abstract

The invention belongs to the technical field of printing, and particularly relates to a high-fidelity spot color number hard proofing method. The method comprises the following steps: step 1: a spot color hard proofing color block guide table parameter control database is established; step 2: a spot color is proofed by a hard proofing device and a spot color effect evaluation is performed; step 3: a spot color hard proofing color block guide table test chart is generated; step 4: the test chart is printed and data-analyzed; and step 5: an original drive value of an optimal color block is applied to substitute the original drive value of the spot color block in a GMG color management system so that spot color proofing with the minimum chromatic aberration is realized. The neighborhood color block guide table is established for the spot colors via a programming method, and the guide table is utilized to perform proofing. Then the chromatic aberration of each color block value in the guide table is measured, and the minimum value of the chromatic aberration is defined as a proofing drive value of the spot color in color management software. Problems that conventional spot color proofing is slow in speed and low in accuracy are compensated by the method and cycle correction is not needed so that a requirement of spot color proofing can be realized via one time of correction.

Description

technical field [0001] The invention belongs to the technical field of printing, and in particular relates to a high-fidelity spot color digital hard proofing method. Background technique [0002] Spot color proofing is the key technology and technical bottleneck of high-quality packaging and printing products. Establishing a high-quality, high-efficiency, and low-cost spot-color hard proofing method is becoming a key research and development issue for printing companies and an important problem to be solved urgently. [0003] At present, there are two types of spot color proofing at home and abroad: the actual printing of spot color proofing by printing machines and the simulation of actual spot color proofing by digital hard proofing systems. The former has problems such as long cycle, high cost and low efficiency, while the latter has problems with spot color library and Problems such as low matching accuracy, poor repeatability and complicated operation steps in actual p...

Claims

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Application Information

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IPC IPC(8): H04N1/387H04N1/40
Inventor 王强戴俊萍王月圆
Owner HANGZHOU DAILY PRESS GRP SHENGYUAN PRINTING CO LTD
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