AR-PE1 (serv.man11). ARPE1 Colour Manual - Sharp Copying Equipment User Guide / Operation Manual. Page 123

A special feature of Photoshop allows you to save RGB EPS (PostScript) images that 
include independent source color space information. This feature is sometimes referred 
to as “PostScript Level 2 tagging” or “RGB tagging.” 

You define the source color space to apply to RGB EPS images by specifying a Monitor 
Setup in Photoshop. However, this Photoshop-specific source color space definition is 
overridden by the RGB Source print option setting located in the Print dialog box 
under Printer Specific Options, unless you set the latter to Off (see page 1-6). 

You can choose colors in Photoshop with various color models including HSB, CIE 
Lab, RGB, and CMYK. You can also choose named colors from the PANTONE color 
library in Photoshop. For best results, use the color definition methods described in 
Chapter 5.

Before saving an RGB EPS file, check the Photoshop Monitor Setup. This setting 
defines the RGB source color space information that will be included in the RGB EPS 
image. You can override this source color space with the RGB Source setting in the 
Print dialog box under Printer Specific Options (see page 1-6).

Before saving a file, perform any rotating, cropping, and resizing needed. This speeds 
processing when printing from the application in which the image is placed.

It is recommended that you use the EPS or TIFF file formats to save RGB images that 
will be imported into other documents and printed to the Fiery X4. EPS and TIFF 
files can be imported into virtually all page layout applications.