Color Management in Printing Process (II)

What is a good process? And in this process, you can solve all the problems of color. Under a premise that your profile is all done, and the equipment has reached a stable condition, after all aspects are ready, simply In terms of color management, the process is based on Profile to Profile. For example, one of your images is to be printed on the printer. In the case of proofing on an inkjet printer, C, M, and Y are passed through the CMM. The value of L, a*, b* obtained by conversion of K value should be the same, that is to say, the color of a picture printed by the printer should be the same as the effect printed by the printing press. It is very simple, but it cannot be impossible for every one to do this in production. It is necessary to use some auxiliary tools to achieve the purpose of color management.

(a) The predetermined image already knows which printer to print on, and knows the profile of the press, knows the profile of the worktable screen of the PC or Mac, and also knows the profile of the printer they are using on the design side, throughout In the production process, after passing through the RIP and completing the layout, we generated the CIP3 and gave it to the printing press to do a piece of information for each part of the ink control. At the same time, we brought in the Press Profile and Proofer Profile to exchange the color in each part. For a proofer, you can get a digital proofing of an embossing press, and then through some Internet mechanisms, whether it is a full page or a single image, you can predict the printed color on a remote machine. This is The ideal architecture for the entire color management.

We must consider the existing architecture, existing equipment, or the cost of the investment in the process. All of them have the RIP methods of the following CMS processes:

(ii) Before RIP was put together, the output before the digital proofing was another RIP. In this RIP, there was a profile of our printer and a proofing profile. Then we went to one of our digital proofs. This was a RIP twice. The method will have a problem of safety, efficiency and cost. That is to say, buying more RIPs and fonts is a cost issue.

(C) Another way is RIP once, which is better in terms of safety and efficiency. However, in such a solution, the question of quality is a consideration, and there will be some differences in quality. RIP once must be pumped. Because of the point approach, the quality of outlets is not as beautiful as the quality of a RIP outlet that specializes in outlets.

(D) The above comprehensive CMS RIP production methods, the overall performance of each method is relatively average, each manufacturer in the selection of the CMS process, you can consider the needs of each vendor to import CMS color management process, consider it Consider efficiency, cost, safety, and its quality.

(5) In addition, we can also use Photoshop's software environment, with the screen to establish the correct parameters to do the screen soft proofing CMS color management, then how to establish the correct parameters? First open Photoshop's CMYK setup, load the correct ICC profile, the correct printer profile, and the screen color is RGB, so you must define the screen Profile, you can correctly predict the print color on the screen In the color control of the screen, we must first establish three points: the white point of the screen, the brightness, and the Gamma of the screen (the adjustment of the screen). The screen correction can also be done through various tools and software.