ICC file manufacturing method of converting RGB color mode to CMYK color mode

Abstract

Provided is an ICC file manufacturing method of converting an RGB color mode to a CMYK color mode, comprising: using the ICC file editor in an ICC file generator to open an ICC file, and modifying the ICC file with a 360% printing ink amount, wherein changing the output of the C channel, the M channel, the Y channel and the K channel of CMYK in inputting 100% to be 95.0, 90.0, 90.0 and 85.0; modifying gray balance data, and respectively adjusting the M and Y channels to be 19 when the C channel is 25; adjusting the M and Y channels to be 40 when the C channel is 50; respectively adjusting the M and Y channels to be 64 when the C channel is 75; and determining employing long black or short black to generate black print according to a print object, and finishing if meeting color picture inspection standards, or else returning. The method can manufacture ICC conversion files suitable for Chinese printing environments, and is used for domestic printing environments to greatly reduce color loss in color transmission processes on different devices.

Description

technical field [0001] The invention belongs to the field of image processing such as traditional printing, digital printing, quick printing, photography and advertisement design; in particular, it relates to a method for making an ICC color description file for converting an RGB color mode into a CMYK color mode. Background technique [0002] Our photographers and designers often ask: why the colors of the images we provide are not the same as they expected after printing? Why is there a color cast? Why is the printed color not as satisfactory as the color of the display? So they express surprise and disappointment with the color printed, thus expressing dissatisfaction, requesting a return, or even not paying. [0003] Therefore, how to convert the RGB images in the hands of photographers and designers into CMYK images for printing is a very urgent problem to be solved. A beautiful CMYK picture comes from the joint efforts of photographers, painters, artists, designers,...

AI Technical Summary

Problems solved by technology

[0015] If you choose the ICC files of various printing standards existing in the computer system, such as Figure 4 As shown: here are the ICC files of European CoatedFORGRA39, European EuroscaleCoated, Japan JapanColor2001Coated, American U.S.SheetfedCoatedV2 and other standards formulated according to the international standard ISO12647-2, but they often do not meet the needs of domestic customers because the paper we use Raw and auxiliary materials such as ink, plate, fountain solution and blanket are different from those in standard-setting regions (such as Europe)

It is best if there is an ICC printed by ourselves, because it reflects our own printing situation in China, but the ICC printed by us only reflects the condition of a certain printing machine at that time, and cannot be used in all periods and on all machines

Images