CN102886999A - Method for making high-definition high-fidelity color picture on surface of offset paper - Google Patents

Abstract

The invention provides a method for making a high-definition high-fidelity color picture on the surface of offset paper. The method comprises the following steps of: firstly, scanning a color original picture to be manufactured through a USM (Ultra Sonic Motor) of an electronic color scanner to input a pattern into a computer or directly using a picture of a digital camera to composite a 1200dpiTIF electronic record picture; toning and optimizing the electronic record picture through color management software; carrying out color separation on three primary colors of the electronic record picture by utilizing GSM2.0 software and separating the colors into six channels: Cyan, Magenta, Yellow, Black, Orange and Green to ensure that the coverage area of various colors in a chromatogram is maximized; transferring and outputting the treated electronic record picture onto a PS (Photo Shop) plate by utilizing photosensitization; and finally, transferring the pattern onto the copper printing paper in a color sequence of Magenta, Cyan, Yellow, Black, Orange and Green through a lithographic printing press. By applying the method, the high-definition high-fidelity color picture can be manufactured on the surface of copper printing paper, the definition of the picture is high, and natural colors and a vivid color gamut are reproduced.

Description

The method of making fine definition, high-fidelity colour picture on the offset paper surface

Technical field

The present invention relates to the method at offset paper surface making fine definition, high-fidelity colour picture.

Background technology

In the prior art, by scanner technology photo is translated into electronics shelves photo, become Cyan, Magenta, Yellow, Black to transfer on the positive image film or the pre-coating light sensitive plate color separation of electronics shelves photo again, again by printing machine with cyan ink, the upper magenta ink of M, the upper Yellow ink of Y, the upper black ink pattern transfer of K on the C version to paper.

Said method exists that pattern is careful not, the tone light and shade change indefinite, picture is flat, level is outstanding, the not high deficiency of definition, can't show the nature realistic colour.

Summary of the invention

The objective of the invention is to overcome the deficiency that prior art exists, a kind of method of making fine definition, high-fidelity colour picture on the offset paper surface is provided.

Purpose of the present invention is achieved through the following technical solutions:

Method in that the offset paper surface makes fine definition, high-fidelity colour picture may further comprise the steps:

1) the colour original photo that will make is input to pattern computer or directly uses the Digit camera picture by the USM scanning of electron colour scanner, synthetic 1200dpi TIF electronics shelves photo;

2) by color management software electronics shelves photo toning is optimized;

3) utilize GSM2.0 software that the three primary colors of electronics shelves photo are carried out color separation, color separation becomes 6 passage: Cyan(days lion cyan), Magenta(days lion magenta), Yellow(days lion is yellow), Black(days lion black), Orange(days lion is orange), Green(days lion is green); Make multiple color coverage maximization in chromatogram;

4) the electronics shelves photo that utilizes sensitization to process shifts and outputs on the PS version (pre-coating light sensitive plate);

5) by offset press with Magenta(days lion magentas), Cyan(days lion cyan), Yellow(days lion is yellow), Black(days lion black), Orange(days lion is orange), Green(days lion is green) successively the look order with design transfer to offset paper.

Further, the above-mentioned method of making fine definition, high-fidelity colour picture on the offset paper surface, wherein, in the step 1), described electron colour scanner is the SG8060 electron colour scanner.

Further, the above-mentioned method of making fine definition, high-fidelity colour picture on the offset paper surface, wherein, step 2) in, described color management software is photoshop color management software.

The substantive distinguishing features that technical solution of the present invention is outstanding and significant progressive being mainly reflected in:

The invention provides at paper surface and carry out polychrome printing and Applied Digital color separation technology, sensitization technology in conjunction with the copying and printing method of modern printing technology, use the method to make fine definition, high-fidelity colour picture on the offset paper surface, image definition is high, reproduces natural colour and colour gamut true to nature.

The specific embodiment

1.1 the colour original that will make is input to computer by the SG8060 electron colour scanner with pattern, the electronics shelves photo of synthetic 1200dpi TIF.

Original text, photo, rough sketch, printed matter input data are penetrated in transmission

2.1 optimize photo by the photoshop technology of mix colors.

1. the space of a whole page: clean and tidy: without newly-increased dirty point, white point, pollution, vignette (oil vacuole), scuffing, folding line and other open defect.

2. picture:

Specification, content, composition (carry cut, direction, positive and negative) meet pressing (hard copy) requirement.

1) the dark light following technological requirement that meets:

Calibration:

Normal original copy: art paper H=Y97% M96% C95% BK125%

S=Y7% M8% C1% BK12%

The colour cast original copy: colour cast generally weakens 3/4, or fully correction (deciding on requirement)

Level: bright, in, shadow is clearly demarcated;

Color: true, nature, coordination;

The clear degree of wash rice: hard mouthful of clear, bright and clean, nothing.

3.1 utilize GSM2.0 software that the three primary colors in the pattern are carried out color separation electronics shelves photo, color separation becomes 6 passage: Cyan, Magenta, Yellow, Black, Orange, Green.

4.1 utilize the sensitization technology that the electronics shelves photo transfer of technical finesse is outputed to (pre-coating light sensitive plate) on the PS version.

Image-forming principle by laser photocomposing machine arrives Cyan, Magenta, Yellow, Black, Orange, Green on the PS version (pre-coating light sensitive plate) with design transfer by CTP (being called for short CTP).

1) environment:

Indoor temperature: 23 ℃ ± 20%;

Relative humidity: 60% ± 20%;

On-the-spot illumination: keep all illuminations normal;

The on-the-spot ventilation: air draft is often opened.

2) equipment:

Film setter DT6120

The call wire number: modulating net 20 μ m directly make a plate;

Registration accuracy: 2400dpi

Record light value: field density 〉=4.0

Record is linear: output positive image data: 5,11,16,22,28,33,39,44,50,55,60,64,69,73,79,82,87,91,96,100

Output negative data: 5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100

Washer LD-M1090

DEV.T 32sec DEV.℃ 35℃ DRY.℃ 45℃

D.AC：60、16 N.AC 60.16 D.R：40、30

F.R D/N：40、25

3) material:

Film model: Kodak

Cover medicine model: KY400(develops) the KY400(photographic fixing);

Development proportioning 2:4, photographic fixing proportioning 1:4.

Identical base density, different exposure knots

5.1 in the situations such as the temperature that sets, humidity, ink-water balance by offset press with Magenta, Cyan, Yellow, Black, Orange, Green successively look order with design transfer to paper.

1) environment:

Indoor temperature: 22 ℃ ± 8% ℃;

Relative humidity: 60% ± 20%;

On-the-spot illumination: keep all illuminations normal;

The on-the-spot ventilation: air draft is often opened.

2) space of a whole page:

Neatly: without dirty point, white point, pollution, vignette, scuffing, folding line, and other obvious mechanical defect.

Gage line: cross hairs, linea angulata, broken line, signature, colour code, version number, signal strips are complete.

Specification: mass colour is convinced, self-consistentency.

Positive and negative: it is consistent with touching the pillow just to carry on the back the fit seaming.

Picture: the site wash rice is clear without ghost image.

Plain net: color is convinced.

Make the output printing parameter

Tradition four looks compare in 2 dimension gamut map with " fine definition high-fidelity printed matter ", and are specific as follows:

In sum, the invention provides at paper surface and carry out polychrome printing and Applied Digital color separation technology, sensitization technology in conjunction with the copying and printing method of modern printing technology, use the method to make fine definition, high-fidelity colour picture on the offset paper surface, image definition is high, reproduces natural colour and colour gamut true to nature.

What need to understand is: the above only is preferred embodiment of the present invention; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (3)

1. the method for making fine definition, high-fidelity colour picture on the offset paper surface is characterized in that may further comprise the steps:

1) the colour original photo that will make is input to pattern computer or directly uses the Digit camera picture by the USM scanning of electron colour scanner, synthetic 1200dpi TIF electronics shelves photo;

2) by color management software electronics shelves photo toning is optimized;

3) utilize GSM2.0 software that the three primary colors of electronics shelves photo are carried out color separation, color separation becomes 6 passage: Cyan, Magenta, Yellow, Black, Orange, Green; Make multiple color coverage maximization in chromatogram;

4) the electronics shelves photo that utilizes sensitization to process shifts and outputs on the PS version;

5) by offset press with Magenta, Cyan, Yellow, Black, Orange, Green successively look order with design transfer to offset paper.

2. according to claim 1 in the surperficial method of making fine definition, high-fidelity colour picture of offset paper, it is characterized in that: in the step 1), described electron colour scanner is the SG8060 electron colour scanner.

3. method of making fine definition, high-fidelity colour picture on the offset paper surface according to claim 1 is characterized in that: step 2) in, described color management software is photoshop color management software.