Xerox Phaser EX7750 Leaflet

One example of how you might use this setting is with a page that contains black text 
on a light blue background. The background blue color is CMYK = 40%, 30%, 0%, 
0% and the black text is CMYK = 0%, 0%, 0%, 100%. 

• With Black Overprint set to Text or Text/Graphics, the final text or text/graphic 

portions of the page are overprinted, or combined with the underlying colors. Black 
colors generated by applications (for example, RGB = 0%, 0%, 0%; CMYK = 0%, 
0%, 0%, 100%) are printed using the maximum amount of black toner allowed by 
the calibration curve. This means that black text and line art will not exhibit 
halftone artifacts (as long as the printer is calibrated correctly). There is no transition 
in the cyan and magenta toners, and the quality of the output is improved since it 
will not show artifacts near the edges of the text or text/graphics. The option also 
works with text defined in the RGB color space, that is RGB = 0, 0, 0. 

• With Black Overprint Off, the border of the text or text/graphics is on an edge that 

has cyan and magenta toners on one side (outside the text) and black toner on the 
other side (inside the text). This transition may cause visible artifacts because of the 
practical limitations of the printer.

This feature is not available with the PCL driver.

The Spot Color Matching option provides automatic matching of spot colors with 
their best CMYK equivalents.

•

—The EX7750 uses a built-in table to generate the closest CMYK matches of 

spot colors your printer can produce. (New tables are generated when you add new 
output profiles.)The EX7750 uses the CMYK matches determined through Spot-
On (see 

•

—The EX7750 uses CMYK equivalents defined by the spot color manufacturer, 

such as PANTONE. These are the same CMYK equivalents used by applications 
that include spot color libraries.