When performing pre-press color separation output operations, some documents produced by pre-press production and art designers who do not understand the requirements of the printing process often encounter graphics and images using RGB mode in PS or PDF documents. Pre-output processing brings difficulties. Correctly processing the colors in the RGB mode in the output document is an important operation to do a pre-press output job.

Existing RIP output software or digital output process software all provide methods for processing RGB mode colors. By setting the output software parameters, you can better control the color-separated output results of RGB mode colors, and ensure the greatest possible color restoration. In the RGB color separation output, the black version often has no color separation data. This problem can be solved in output software such as RIP.

1. RGB color processing of Harlequin RIP output software

In the Harlequin RIP software, there are two cases of RGB color processing, which are the RGB color separation processing method when the color management function (No Color Management) is not turned on, and the RGB using the Harlequin color management function (Harlequin ColorPro) Color separation processing.

1. RGB color processing without color management function

Since opening the color management function of Harlequin RIP requires the purchase of a color management function module, some output units that use Harlequin RIP software may not have the function of color management. In the case of No Color Management, you can also simply set the method for controlling RGB mode color separation when processing RGB mode colors.

2. RGB color processing using Harlequin ColorPro

If the color management function (Color Pro) has been turned on in Harlequin RIP, you can add a color separation control curve to control the processing of RGB mode colors.

Second, the RGB color processing of the Agfa Apogee digital output system

In the digital output process system, the processing method of RGB mode is more perfect. Taking Apogee flow system as a column, more detailed settings are available for operation in its color separation processing module. In Apogee's color separation processing component PDF Render, the color separation processing settings can be set for different color modes and for different situations of graphics and images.

For graphics or image elements in the document, if the ICC characteristic data file is included for processing, you can choose not to use the built-in characteristic file and use the built-in characteristic file for operation, or you can specify a default characteristic file for processing in the process.

For the target characteristic file (ie CMYK color characteristic file) of the output document, it can be set in the printing component of the output job.

Apogee digital process system can transfer the personalized characteristic files of the operator into the system, and can manage the color for each color-related component. Its powerful output color management function can better ensure the targeted processing of different color modes and spot colors in the output process to achieve the best output effect.

At present, it is impossible for graphic designers and designers to have a good understanding of the technical characteristics of printing. When outputting jobs, they will encounter some documents that do not meet the requirements. You must be careful about the output of these documents. The best way is to communicate and communicate with the producer to solve problems such as the use of RGB colors, so as not to cause unnecessary trouble.

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