Color simulation method for digital proofing

A technology of digital proofing and simulation methods, applied in the direction of image communication, electrical components, etc., can solve difficult, troublesome and complex problems, and achieve the effect of easy and convenient operation

Active Publication Date: 2013-05-01
上海紫恩数码科技有限公司
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for the vast majority of prepress files contain dots, how to simulate the color of these non-solid areas becomes very difficult
[0005] For example, the completed color separation electronic file contains patterns of various dot ratios in the finished document (such as ai format or pdf format), and the dot size of 50% of the dots is still 50%. After rip, the generated tiff The dots in the file are still 50%. When digital proofing, you need to use the preset printer compensation curve to print 50% of the dots into 67% to simulate the dot expansion during printing. When using this electronic file for plate making, different plate making The factory needs to...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Color simulation method for digital proofing
  • Color simulation method for digital proofing
  • Color simulation method for digital proofing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The color simulation method of digital proofing of the present invention, its concrete steps are as follows:

[0022] 1. The selected printing process type is satellite wide-format flexographic printing, and determine its specific printing process conditions:

[0023] Use comexi brand FPLUS2510 flexographic printing machine, Flint's FAH114D printing plate, sinwa company for laser plate making, printing plate 110L / inch square dots, screen angle C: 67.5°, M: 37.5°, Y: 82.5°, K : 7.5°, the thickness of t esa company is 0.5mm neutral hardness double-sided adhesive plate, using the FLX series alcohol-soluble ink of Hanghua Ink, the ink diluent uses ethanol: propylene glycol ether = 4: 1, printing viscosity 22s, printing The speed is 300m / min, the substrate is milky white PE-LD film, cyan (C) uses apex 315 (l / cm) anilox roller, magenta (M) uses apex 275 (l / cm) anilox roller, yellow (Y) use apex 200 (l / cm) anilox roll, black (K) use apex 400 (l / cm) anilox roll;

[0024] In a...

Embodiment 2

[0054] 1. The selected printing process type is satellite wide-format flexographic printing, and determine its specific printing process conditions:

[0055] Use the F10 gravure printing machine of FUJI brand, the circumference of the printing plate of Shanghai Yuncheng Plate is 510mm, the screening process is carried out according to Table 6, and the GC01 series ester-soluble ink of Letong Ink is used, and the ink diluent uses ethyl acetate: n-propyl acetate : Isopropanol=5:4:1, printing viscosity 15s, printing speed 180m / min, substrate is transparent PET shrink film.

[0056] Table 6, Screening process of various colors

[0057]

C

M

Y

K

special blue

Screening angle

30°

60°

45°

30°

30°

Screening lines

70L / cm

70L / cm

70L / cm

100L / cm

70L / cm

[0058] In addition, an Epson7910 digital printer was also selected and adjusted so that the printed products would not have dot expansion.

[0059]...

Embodiment 3

[0088] The color simulation method implementation example 3 of digital proofing of the present invention, its concrete steps are as follows:

[0089] 1. Use the same printing conditions as in Embodiment 2.

[0090] 2. The same method as step 3 of the specific embodiment 2 is used to make an electronic file, which is composed of M+special green, the printing process of M is exactly the same as M in the specific embodiment 2, and the printing process of the special green is the same as that of the specific embodiment 2 special blue exactly the same;

[0091] 3. Known special green L * =46.27,a * =-74.66,b * =28.37, the color of M is exactly the same as the M of the specific embodiment 2, carry out the same steps 4, 5, 6 as the specific embodiment 2, and combine the CIEL of the two colors * ,a * ,b * Into step 6, you can get a satisfactory digital sample.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a color simulation method for digital proofing, which comprises the following steps that color information and a dot gain value in actual printing process conditions are measured, the dot gain value is utilized to directly perform dot gain on an electronic file before RIP (Raster Image Processing), during RIP or after RIP, the electronic file after the RIP after the dot gain is used, and a digital printer without the dot gain during printing is used for digital proofing. The color simulation method for digital proofing has the advantages of easiness in operation and precise simulation, and the WYSIWYG (what you see is what you get) effect of digital proofing is achieved.

Description

technical field [0001] The invention belongs to the technical field of printing and relates to a color simulation method for digital proofing before printing. Background technique [0002] In order to achieve the purpose of "what you see is what you get", before printing, it is necessary to use software to display the electronic files for printing on the computer screen; in many cases, it is necessary to use professional inkjet printers and professional printing paper. Print out the electronic file, that is, digital proofing, for customer confirmation, and accept the final print as an attachment to the contract. [0003] Therefore, "digital proofing = printing sample" is the goal of efforts before printing. To achieve this goal, it is extremely important to accurately simulate each color. [0004] For products that are all solid color blocks, it is relatively simple. It only needs to measure the L*, a*, and b* values ​​of each color block to prove that their colors are cons...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04N1/54
Inventor 曹员珍范崟
Owner 上海紫恩数码科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap