250 Troubleshooting C7085-90921
Some of the PANTONE® colors will not match exactly. There are over 945 PANTONE® colors in
the PANTONE® Matching System. These colors were created using sixteen inks on a lithographic
printing press. Not all of these colors can be reproduced by a laser color printer because they are
out of a laser printer's four-color range. PANTONE® calibrates HP printers to provide the closest
match for all the colors we can reproduce and provide the colors closest to those we cannot
reproduce.
Note This feature requires the use of the PostScript 3 Emulation printer driver. It utilizes a function in the
PostScript language for describing custom colors like PANTONE® that is unique to PostScript and
not present in the PCL data stream. PANTONE® colors are used mostly in publishing environments
by applications such as QuarkXpress and Adobe InDesign that tend to use PostScript only.
Adjusting color balance
This printer features automatic color calibration to provide high-quality color output. In situations
that require critical color control, you can manually adjust the density balance of the printer’s four
toner colors.
CAUTION This procedure should only be performed by your network administrator. Performing this procedure
changes the color balance of the printer by altering halftones and affects all print jobs.
To adjust color balance
Step 1: Print a color balance calibration page.
The color balance calibration page (shown in Figure 7-7) displays current color settings and
provides a record of the printer’s initial settings before any adjustments are made.
1 Press
[MENU] until CALIBRATION MENU displays.
2 Press
[ITEM] until PRINT CALIBRATION PAGE displays.
3 Press
[SELECT] to print the color balance calibration page. The page consists of four color bars
(cyan, magenta, yellow, and black) and a box containing gray balance circles. The factory
default setting for each color is zero. The range of settings is -5 to +5.
Note Adjusting densities using the four color bars provides coarse color balance adjustments. After making
these adjustments, you can fine-tune color densities by adjusting the gray balance. (See step 7
for instructions.)
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