Xerox Phaser EX7750 Leaflet
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Managing color on the EX7750
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OTE
:
The rendering styles associated with the PCL driver do not match those
associated with the PostScript driver.
Pure Black Text/Graphics
The Pure Black Text/Graphics option affects the printout for black text and
vector
graphics
on a page. Under most circumstances, leave this option set to On. When
Pure Black Text/Graphics is on, black colors generated by applications (for example,
RGB = 0, 0, 0; CMYK = 0%, 0%, 0%, 100%; or K = 100%) are printed using the
maximum amount of black toner allowed by the calibration curve. This means the
black text and line art will not exhibit halftone
RGB = 0, 0, 0; CMYK = 0%, 0%, 0%, 100%; or K = 100%) are printed using the
maximum amount of black toner allowed by the calibration curve. This means the
black text and line art will not exhibit halftone
artifacts
(as long as the printer is
calibrated correctly) and will not be misregistered, since there is only one toner used.
In addition, this setting eliminates
In addition, this setting eliminates
blasting
.
For some jobs, it is preferable to clear this option, for example, if the page includes
gradient
fills that use black. The following table describes the behavior of the Pure
Black Text/Graphics option with black data defined in different color spaces.
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OTE
:
Use the Pure Black Text/Graphics option only when printing composites, not
when printing separations.
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OTE
:
PostScript applications (such as QuarkXPress) may convert elements defined as
RGB = 0, 0, 0 to four-color CMYK black before sending the job to the EX7750. These
elements are not affected by the Pure Black Text/Graphics option. For details, see the
elements are not affected by the Pure Black Text/Graphics option. For details, see the
Input
black color
Pure Black Text/Graphics
On
Off
RGB
Prints 100% black
With the default profile, prints a rich black using
all toners.
all toners.
CMYK
Prints only with black toner, because CMYK
simulations preserve the black channel. The actual
amount of toner used depends on the current
simulation and the calibration state of the printer.
simulations preserve the black channel. The actual
amount of toner used depends on the current
simulation and the calibration state of the printer.
Spot
Prints only with black toner, because spot color
simulations preserve the black channel. The actual
amount of toner used depends on the current
simulation and the calibration state of the printer.
simulations preserve the black channel. The actual
amount of toner used depends on the current
simulation and the calibration state of the printer.