CMYK/Grayscale Source and RGB/Lab Source

The CMYK/Grayscale Source and RGB Source print options allow you to define the color spaces of the CMYK and RGB data, respectively, in your document so that the appropriate color conversion occurs on the Fiery Server.

Commonly used color spaces are available on the Fiery Server. For others, you can import custom profiles to the Fiery Server.

CMYK/Grayscale Source

To properly manage color in a printed image that was separated using an ICC profile, the same profile must be specified for printing the image.

The CMYK/Grayscale Source profile setting you specify depends on the CMYK profile or press standard for which the CMYK data was separated. This option affects CMYK data only.

For images that were separated using a custom separation (such as a separation produced with an ICC profile), select the corresponding profile on the Fiery Server with the CMYK/Grayscale Source setting.
For images that were separated for a press standard, select the press standard as the CMYK/Grayscale Source setting.

The CMYK/Grayscale Source option can be set to any CMYK source profile that is present on the Fiery Server.

If you do not want CMYK data in a job to be converted to a CMYK source color space, you can select one of the following settings:

None or Bypass Conversion - These settings send the original CMYK data in the job to the printer without conversion, but with calibration applied. The None setting or the Bypass Conversion setting is recommended if you use another color management system instead of ColorWise (for example, ColorSync or Photoshop).

If your document contains an embedded CMYK profile, select None or select the Use Embedded Profile When Present (CMYK) option. The embedded profile is applied to CMYK data.

Note: For some older models of Fiery Server, the embedded profile is applied to CMYK data regardless of the CMYK/Grayscale Source setting. For all models of Fiery Server, selecting the None setting or the Use Embedded Profile When Present (CMYK) option results in using the embedded profile.

ColorWise Off - This setting sends the original CMYK data in the job to the printer without calibration applied and without converting the CMYK data. The CMYK data is still subject to maximum density constraints, however.

The ColorWise Off setting is available for a specific job but it cannot be the default setting on the Fiery Server. You select this setting for a specific job.

Note: When you print with the ColorWise Off setting, make sure that the options you choose in your application do not cause the application to modify CMYK data. You must specify No Color Management in the application when you print with the ColorWise Off setting.

RGB/Lab Source

When you specify a profile for RGB Source, the Fiery Server overrides source color space definitions or profiles that other color management systems may have specified. For example, if your document contains an embedded RGB profile, the RGB Source setting overrides it.

When you specify an RGB source profile, the output from the Fiery Server is consistent across platforms. The RGB Source options are as follows:

EFIRGB - Specifies an EFI-defined color space recommended for users who have no detailed information about their RGB data.
sRGB (PC) - A Microsoft and Hewlett-Packard recommended color space designed for typical home and office applications.
Apple Standard - Specifies the color space of an older Mac OS computer monitor.
Adobe RGB (1998) - An Adobe-defined color space, used in some pre-press workflows as the default working space for Adobe Photoshop.
ECI-RGB - The European Color Initiative (ECI) recommended space for use as an RGB working color space and color data exchange format for ad agencies, publishers, reproduction, and printing houses.
Fiery RGB - An EFI-defined color space recommended for users of office applications. This color space is similar to EFIRGB but is larger and can provide a more desirable blue output.

In cases where you do not want RGB Source to override another specified source color space, either select None or select the Use Embedded Profile When Present (RGB) option, whichever setting your Fiery Server supports.

If RGB Source is set to None, or the Use Embedded Profile When Present (RGB) option is enabled, the Fiery Server ignores RGB Source and uses the RGB profile embedded in the print job (if any) as the RGB source profile.