CN101987529A - Digital sample printing method of spot color participation image - Google Patents
Digital sample printing method of spot color participation image Download PDFInfo
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- CN101987529A CN101987529A CN2009100561185A CN200910056118A CN101987529A CN 101987529 A CN101987529 A CN 101987529A CN 2009100561185 A CN2009100561185 A CN 2009100561185A CN 200910056118 A CN200910056118 A CN 200910056118A CN 101987529 A CN101987529 A CN 101987529A
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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
The present invention relates to proofing method, particularly relate to the digital sample printing method that a kind of special look participates in image.
Background technology
Traditional method to spot color participation image before the seal is: simulate the spot color form and aspect by the color matching of CMYK four color separations in Photoshop.The shortcoming of this way is as follows:
After in Photoshop that spot color is alternative with four color separations, the hierarchical relationship that mutually laminates of spot color and color separation just lost before drawing a design.
Even the simulation of the form and aspect on the spot of spot color is more approaching, but still can not reach satisfied result to the simulation of spot color linked network look.
Because above-mentioned shortcoming, the digital sample printing that causes spot color to participate in image can't realize What You See Is What You Get, so that the producer can't trust spot color digital sample printing result before the client, seal.
Summary of the invention
Technical problem to be solved by this invention is exactly to provide a kind of special look to participate in the digital sample printing method of image for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: a kind of special look participates in the digital sample printing method of image, it is characterized in that, may further comprise the steps:
1) prepares GMG spot color step-wedge version;
2) difference of correction GMG built-in Pantone special look storehouse and recessed sample:
21) use built-in Pantone spot color storehouse to print the digital sample of spot color step-wedge before the seal;
22) it is concave-like to beat spot color with GMG spot color step-wedge version, and making on the spot, color-values reaches consistent with digital sample;
23) measure respectively the digital sample of spot color step-wedge and spot color concave-like dot area coverage rate or density value, and the difference formation curve;
24) improve the digital sample effect of spot color step-wedge, above-mentioned two curves are approached as far as possible.
Described step 1) further comprises:
11) prepare the built-in step-wedge file of GMG software before the seal;
12) use the special look electricity carver commonly used engraving step-wedge of planting.
The digital sample of described look step-wedge comprises the digital sample of cyan, the digital sample of magenta, special blue digital sample, special green digital sample and special red digital sample.
Described step 24) for beating spot color with GMG spot color step-wedge version when concave-like, loads the adjustment curve according to the concave-like curve of spot color.
Described step 24) be to adjust spot color electric carving curve according to the concave-like curve of spot color.
Compared with prior art, the present invention provides the adjustment foundation for printing front personnel in the contribution type that spot color participates in the electricity branch, traditional way is to look near the form and aspect of spot color according to the gravure chromatogram drawing a design with color separation simulation spot color, the effect of coming out is very undesirable, the EPSON effect of utilizing GMG to draw a design is very approaching with the concave-like effect of drawing a design, personnel just can use EPSON to draw a design to carry out accurately spot color simulation to draw a design before the seal, the What You See Is What You Get that the realization spot color is drawn a design; Spot color by digital sample printing simulation is very near printing effect, satisfied the client to this type of contribution see the sample requirement, and reduced rework rate, reduced cost (in the past when doing the contribution of many spot colors participation electricity branches, all be to see the concave-like rear final version of test to the client, the cycle is long, the cost height).
Description of drawings
Fig. 1 is the step-wedge file schematic diagram of the embodiment of the invention;
Fig. 2 draws a design for the digital sample printing of the embodiment of the invention and recessed sample and reduces curve synoptic diagram one;
Fig. 3 draws a design for the digital sample printing of the embodiment of the invention and recessed sample and reduces curve synoptic diagram two;
Fig. 4 is that the full spot color of the embodiment of the invention participates in contribution digital sample printing and concave-like reduction comparison diagram under standard sources.
Wherein: a is the recessed sample curve of drawing a design, and b is the digital sample printing curve.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
The present invention reaches the form and aspect of accurate simulation spot color linked networks at different levels by the form and aspect that allow digital sample printing simulate the spot color step-wedge, and can make the spot color form and aspect the most approaching in the maximum gamut of printing the function realization by the circulation correction.With respect to only simulate spot color on the spot form and aspect to carry out digital sample printing be a progress.
Embodiment
The present embodiment step is as follows:
1) prepare the special look step-wedge of GMG version:
11) prepare spot color step-wedge file before the seal: the built-in step-wedge file of GMG software is used in suggestion, can realize automatic measurement.As Fig. 1;
12) the special look step-wedge of engraving: use special look electricity carver commonly used to plant and carve step-wedge (carving as legal, the anti-version of pearly-lustre film, anti-edition three kinds electric carver's skills of aluminium foil), different technology can be carved on a version roller, conveniently draws a design;
13) it is for subsequent use that the roller that engraving is good leaves concave-like workshop in, notes the protection of roller.
2) difference of correction GMG built-in Pantone special look storehouse and recessed sample:
21) use built-in Pantone spot color storehouse to print the digital sample of spot color step-wedge before the seal; Suggestion is printed several representational colors and is convenient for measuring (such as cyan, magenta, specially blue, specially green, specially red etc.);
22) it is concave-like to beat spot color with GMG spot color step-wedge version, makes on the spot color-values and digital sample reach consistent (general Δ E＜2 can think reach requirement);
23) measure digital sample printing and concave-like drawing a design and go back virgin curve: measure respectively the digital sample of spot color step-wedge and spot color concave-like dot area coverage rate or density value, difference formation curve in Excel.As Fig. 2;
24) improve the spot color effect of drawing a design: two kinds of method improvement effects are arranged, the one, loading curve when GMG beats spot color, the 2nd, adjust spot color electric carving curve.The result who finally reaches is that two curves will approach as far as possible, such as Fig. 3;
3) set up the special look of particular customer storehouse:
A lot of internationally recognizable brands all have own specific special look storehouse, such as P﹠G.Will set up special look storehouse for this client at particular customer.Step is as follows:
31) obtain the special look database of client (being the LAB value of target that the client requires): generally by two kinds of methods, the one, directly take the desired value of all special looks of client, the 2nd, the special look full pattern that provides by measuring customer.(database is not generally accomplished to settle at one go, need to constantly accumulate in cooperative process, and is constantly perfect.)
32) difference of correction client special look storehouse and recessed sample (or printing): trimming process is the same.
4) special look participates in the digital sample printing workflow of image:
41) production technology section formulates spot color artistic carving: the spot color according to the client participates in electricity branch contribution type, formulates spot color artistic carving, and makes a record;
42) spot color digital sample printing: use the spot color storehouse corresponding with artistic carving to carry out digital sample printing before the seal.(such as glue sample, sample) will chase after if the client has the spot color full pattern, then will measure, and verify as required digital sample printing and concave-like reducing degree.And the special color range that loads correspondence in software transfers curve to draw a design;
43) specially look recessed sample is drawn a design: the contribution that special look participates in, and when drawing a design, recessed sample need measure color-values.Making on the spot color-values and digital sample reach consistent (general Δ E＜2 can think reach requirement), is that digital sample printing and concave-like reduction ratio be under standard sources for a full spot color participation contribution such as Fig. 4.
Claims (5)
1. the digital sample printing method of a special look participation image is characterized in that, may further comprise the steps:
1) prepares GMG spot color step-wedge version;
2) difference of correction GMG built-in Pantone special look storehouse and recessed sample:
21) use built-in Pantone spot color storehouse to print the digital sample of spot color step-wedge before the seal;
22) it is concave-like to beat spot color with GMG spot color step-wedge version, and making on the spot, color-values reaches consistent with digital sample;
23) measure respectively the digital sample of spot color step-wedge and spot color concave-like dot area coverage rate or density value, and the difference formation curve;
24) improve the digital sample effect of spot color step-wedge, above-mentioned two curves are approached as far as possible.
2. a kind of special look according to claim 1 participates in the digital sample printing method of image, it is characterized in that described step 1) further comprises:
11) prepare the built-in step-wedge file of GMG software before the seal;
12) use the special look electricity carver commonly used engraving step-wedge of planting.
3. a kind of special look according to claim 1 and 2 participates in the digital sample printing method of image, it is characterized in that, the digital sample of described look step-wedge comprises the digital sample of cyan, the digital sample of magenta, special blue digital sample, special green digital sample and special red digital sample.
4. a kind of spot color according to claim 3 participates in the digital sample printing method of image, it is characterized in that described step 24) for beating spot color with GMG spot color step-wedge version when concave-like, load the adjustment curve according to the concave-like curve of spot color.
5. a kind of spot color according to claim 3 participates in the digital sample printing method of image, it is characterized in that described step 24) be to adjust spot color electric carving curve according to the concave-like curve of spot color.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100561185A CN101987529B (en) | 2009-08-07 | 2009-08-07 | Digital sample printing method of spot color participation image |
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|---|---|---|---|
| CN2009100561185A CN101987529B (en) | 2009-08-07 | 2009-08-07 | Digital sample printing method of spot color participation image |
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| CN101987529A true CN101987529A (en) | 2011-03-23 |
| CN101987529B CN101987529B (en) | 2012-08-15 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042853A (en) * | 2013-01-21 | 2013-04-17 | 上海紫恩数码科技有限公司 | Special colour simulation method |
| CN103129184A (en) * | 2011-11-30 | 2013-06-05 | 北大方正集团有限公司 | Special colour calibration method and device of special colour calibration |
| CN104965970A (en) * | 2015-04-30 | 2015-10-07 | 华文包装股份有限公司 | Special color determination method for packaging and printing multimedium digital proofing |
| CN108460716A (en) * | 2018-01-30 | 2018-08-28 | 大连工业大学 | Spot color printing image digital watermark method and system |
| CN110774729A (en) * | 2019-10-15 | 2020-02-11 | 中荣印刷集团股份有限公司 | High-fidelity offset printing method based on seven primary colors |
| CN111914316A (en) * | 2020-07-17 | 2020-11-10 | 陕西科技大学 | Method for designing gravure spot color digital ladder ruler based on spectral reflectivity |
| CN114638786A (en) * | 2022-02-21 | 2022-06-17 | 杭州印鸽科技有限公司 | Picture printing effect simulation system and color matching method for different processes |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0601933A3 (en) * | 1992-12-10 | 1994-12-14 | Minnesota Mining & Mfg | Electrophotographic color proofing system for gravure printed images. |
| CN1227568C (en) * | 2003-04-30 | 2005-11-16 | 上海龙樱彩色制版有限公司 | Colour management method in digital proofing |
| JP2006303686A (en) * | 2005-04-18 | 2006-11-02 | Dainippon Screen Mfg Co Ltd | Conversion method of image data, image data converter, and program |
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2009
- 2009-08-07 CN CN2009100561185A patent/CN101987529B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103129184A (en) * | 2011-11-30 | 2013-06-05 | 北大方正集团有限公司 | Special colour calibration method and device of special colour calibration |
| WO2013078837A1 (en) * | 2011-11-30 | 2013-06-06 | 北大方正集团有限公司 | Method and apparatus for calibrating special color |
| US9056511B2 (en) | 2011-11-30 | 2015-06-16 | Peking University Founder Group Co., Ltd. | Method and apparatus for calibrating spot color |
| CN103042853A (en) * | 2013-01-21 | 2013-04-17 | 上海紫恩数码科技有限公司 | Special colour simulation method |
| CN103042853B (en) * | 2013-01-21 | 2014-07-16 | 上海紫恩数码科技有限公司 | Special colour simulation method |
| CN104965970B (en) * | 2015-04-30 | 2017-09-12 | 华文包装股份有限公司 | Spot color for packages printing multimedium digital proof determines method |
| CN104965970A (en) * | 2015-04-30 | 2015-10-07 | 华文包装股份有限公司 | Special color determination method for packaging and printing multimedium digital proofing |
| CN108460716A (en) * | 2018-01-30 | 2018-08-28 | 大连工业大学 | Spot color printing image digital watermark method and system |
| CN110774729A (en) * | 2019-10-15 | 2020-02-11 | 中荣印刷集团股份有限公司 | High-fidelity offset printing method based on seven primary colors |
| CN110774729B (en) * | 2019-10-15 | 2021-02-26 | 中荣印刷集团股份有限公司 | High-fidelity offset printing method based on seven primary colors |
| CN111914316A (en) * | 2020-07-17 | 2020-11-10 | 陕西科技大学 | Method for designing gravure spot color digital ladder ruler based on spectral reflectivity |
| CN111914316B (en) * | 2020-07-17 | 2024-01-12 | 陕西科技大学 | Design method of intaglio special color digital ladder ruler based on spectral reflectivity |
| CN114638786A (en) * | 2022-02-21 | 2022-06-17 | 杭州印鸽科技有限公司 | Picture printing effect simulation system and color matching method for different processes |
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| CN101987529B (en) | 2012-08-15 |
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Owner name: TONGCHENG YUNCHENG PLATE MAKING CO., LTD. Free format text: FORMER OWNER: SHANGHAI YUNAN PLATE-MAKING CO., LTD. Effective date: 20130105 |
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Effective date of registration: 20130105 Address after: 231400 Tongcheng City, Anqing Province, private Economic Development Zone Xingyuan West Road Patentee after: Tongcheng Yuncheng Platemaking Co., Ltd. Address before: 201805 Jiading District Town, Anting, Qinan Road, No. 288, No. Patentee before: Shanghai Yunan Plate-Making Co., Ltd. |