CN103813053A - Method for building gravure spot color separation workflow based on spectrum technology - Google Patents
Method for building gravure spot color separation workflow based on spectrum technology Download PDFInfo
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- CN103813053A CN103813053A CN201410048987.4A CN201410048987A CN103813053A CN 103813053 A CN103813053 A CN 103813053A CN 201410048987 A CN201410048987 A CN 201410048987A CN 103813053 A CN103813053 A CN 103813053A
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Abstract
The invention relates to a method for building gravure spot color separation workflow based on spectrum technology. The method includes the steps: firstly, measuring the spectrum of an original color, and setting a spot color target and building a spot color ICC; secondly, building a scanning, soft proofing and digital proofing color management work process model, and then developing decomposition operation software from RGB (red, green and blue) to spot colors based on an LAB color space; thirdly, collectively inputting a scanning pattern of the original and the spot color ICC to color separation software to obtain a spot color model, inspecting whether data of the color model overflow or not, revising the data, and confirming the decomposed spot colors; finally, performing proofing for decomposed spot color information to inspect a color separation result. By the method, the average color separation manufacture time of one manuscript is within one hour, efficiency is greatly improved, images compounded by spot color channels keep original colors, and remaking rate is low.
Description
Technical field
The present invention relates to intaglio printing industry, relate in particular to the spot color separating method of intaglio printing decorative panel.
Background technology
The technology of spot color separating mainly contains two types at present, and a kind of is the special color separation software that adopts import, directly draws the mode point spot color of picture color, this mode is relatively backward, and the procurement price costliness of software, workman is difficult to training and grasps, and quality also depends on workman's experience.
Another kind is the decomposition simulation of carrying out color with PHOTOSHOP software, but PS software is mainly used for decomposing CMYK tetra-color separations, divide the scarce capacity of spot color, RGB has caused the loss of colouring information when transforming CMYK, the decomposition of spot color relies on workman to revise by rule of thumb adjustment, and the process-cycle reaches one week, inefficiency, color separation quality rely on workman experience number and contribution difficulty, quality is unstable.
Summary of the invention
The present invention seeks to provide in order to overcome the deficiencies in the prior art a kind of point of spot color separating method that colour efficiency is higher and composograph original color conservation degree is higher.
For achieving the above object, the technical solution used in the present invention is: a kind of method of setting up intaglio plate spot color separating workflow based on spectral technique, it comprises the steps:
(1) set up scanning, softly draw a design, digital sample printing color management course of work model;
(2) software to the decomposition operation of spot color based on LAB color space exploitation RGB color;
(3) spectrum of measurement original copy color, sets spot color look target and sets up spot color ICC;
(4) by the software in the scintigram of original copy and the common input step of described spot color ICC (2), obtain spot color colour model, check whether the data of colour model overflow, and revise, confirm to decompose spot color;
(5) the spot color information of decomposition is drawn a design to check color separation result.
Optimally, in step (3), described original copy color spectrum data measure by spectrophotometric instrument.
Optimally, in step (5), described drawing a design comprises LCD soft proof and digital sample printing.
Owing to adopting technique scheme, beneficial effect of the present invention: the present invention is by setting up a point spot color workflow based on spectral technique, by measuring the spectrum of original copy color, set spot color look target and set up spot color ICC, scintigram Input Software is realized to point spot color automatically, extract spot color information, the correctness of these spot colors can be checked by the LCD soft proof based on color management workflow and digital sample printing simultaneously, in 1 hour, just can complete by a set of contribution of the inventive method average color separation Production Time, efficiency is greatly improved, and each Spot Channel composograph keeps former figure color, rework rate is lower.
Accompanying drawing explanation
Accompanying drawing 1 is for carrying out the flow chart of spot color separating based on the inventive method.
Embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is done to detailed introduction:
Gravure plate-making flow chart as shown in Figure 1, it mainly comprises the steps such as original copy input, software color separation, digital sample printing and Plate making printing, respectively the realization of each step is described below according to flow chart:
In original copy input step, first copy an original copy, analyze original copy and determine colour code, then original copy is scanned to obtain digital document.Wherein, determine in colour code at analysis original copy, mainly measure the spectrum of original copy color by spectrophotometric instrument, to obtain ICC tag file.
In software color separation, model scanning, softly draw a design, digital sample printing color management course of work model, under LAB color space, complete the decomposition operation of RGB color to spot color, exploitation color separation software, can avoid like this RGB loss to color of image information to the computing of CMYK, also can inaccurately not cause extracting the impure of spot color because of what draw color; The scintigram file obtaining in original copy input step and ICC tag file are inputted to color separation software jointly, obtain spot color colour model to calculate, check whether the data of colour model overflow, revise, then confirm to decompose spot color.
Complete after above-mentioned steps, can draw a design by screen or EFI software, and the spot color information of decomposing is tested.Thereby can carry out follow-up Plate making printing.
The present invention, by setting up spot color separating workflow, has following beneficial effect:
1, go out one group of best spot color not specifying in spot color situation according to RGB image calculation, the result of datumization is not subject to the interference of human factor;
Average color difference≤1.5 of all color lumps in the figure 2, obtaining after actual scanning original text and scanning, obtain the original copy input of higher resolution and color rendition;
3, automatically RGB image is divided into Spot Channel according to definite spot color, average color separation Production Time of a set of contribution is in 1 hour;
4, each Spot Channel composograph keeps former figure color, because color separation structure is forbidden the rework rate causing and dropped in 1%;
5, provide the image color preview function after version combination of all kinds after spot color separating, can obtain easily different schemes of colour, have more selection for client.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (3)
1. a method of setting up intaglio plate spot color separating workflow based on spectral technique, is characterized in that, it comprises the steps:
(1) set up scanning, softly draw a design, digital sample printing color management course of work model;
(2) software to the decomposition operation of spot color based on LAB color space exploitation RGB color;
(3) spectrum of measurement original copy color, sets spot color look target and sets up spot color ICC;
(4) by the software in the scintigram of original copy and the common input step of described spot color ICC (2), obtain spot color colour model, check whether the data of colour model overflow, and revise, confirm to decompose spot color;
(5) the spot color information of decomposition is drawn a design to check color separation result.
2. the method for setting up intaglio plate spot color separating workflow based on spectral technique according to claim 1, is characterized in that: in step (3), described original copy color spectrum data measure by spectrophotometric instrument.
3. the method for setting up intaglio plate spot color separating workflow based on spectral technique according to claim 1, is characterized in that: in step (5), described drawing a design comprises LCD soft proof and digital sample printing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410048987.4A CN103813053A (en) | 2014-02-12 | 2014-02-12 | Method for building gravure spot color separation workflow based on spectrum technology |
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| CN201410048987.4A CN103813053A (en) | 2014-02-12 | 2014-02-12 | Method for building gravure spot color separation workflow based on spectrum technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739592A (en) * | 2016-11-21 | 2017-05-31 | 武汉宝钢印铁有限公司 | A kind of metal UV color printing product color separation prints coating method |
| CN108353114A (en) * | 2015-10-30 | 2018-07-31 | 惠普深蓝有限责任公司 | Printing equipment |
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| CN101049770A (en) * | 2006-04-04 | 2007-10-10 | 深圳职业技术学院 | Color printing method on surface of metal in high fidelity |
| CN101197914A (en) * | 2007-12-14 | 2008-06-11 | 北京圣彩虹制版印刷技术有限公司 | Digital high simulation art work duplicating method |
| CN101534452A (en) * | 2009-04-17 | 2009-09-16 | 山东大学 | Conversion method for color gamut conversion system of laser television display based on experimental calibration |
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2014
- 2014-02-12 CN CN201410048987.4A patent/CN103813053A/en active Pending
Patent Citations (3)
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| CN101049770A (en) * | 2006-04-04 | 2007-10-10 | 深圳职业技术学院 | Color printing method on surface of metal in high fidelity |
| CN101197914A (en) * | 2007-12-14 | 2008-06-11 | 北京圣彩虹制版印刷技术有限公司 | Digital high simulation art work duplicating method |
| CN101534452A (en) * | 2009-04-17 | 2009-09-16 | 山东大学 | Conversion method for color gamut conversion system of laser television display based on experimental calibration |
Non-Patent Citations (1)
| Title |
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| 孙中锋: "四基色专色分色技术的研究", 《西安电子科技大学硕士学位论文》, 1 January 2009 (2009-01-01) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108353114A (en) * | 2015-10-30 | 2018-07-31 | 惠普深蓝有限责任公司 | Printing equipment |
| US10778869B2 (en) | 2015-10-30 | 2020-09-15 | Hp Indigo B.V. | Printing devices |
| CN108353114B (en) * | 2015-10-30 | 2020-12-22 | 惠普深蓝有限责任公司 | Printing equipment |
| CN106739592A (en) * | 2016-11-21 | 2017-05-31 | 武汉宝钢印铁有限公司 | A kind of metal UV color printing product color separation prints coating method |
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Application publication date: 20140521 |
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