Xerox 6180N - Phaser Color Laser Printer Color Management Manual page 24

Stock Management and Calibration
3-2
New or custom stocks may require characterization if you
choose to place them in a new color group. If the new or custom
stock is placed within one of the pre-installed color groups, the
stock picks up the profile assigned to the color group. Each new
or custom stock needs to be characterized only once. This
characterization is assigned to the color group and is invoked
each time the stock is selected for use in a job.
Once created, a color profile is assigned to any stock within the
color group.
The three pre-installed color groups are:
• Bright White (L* > 95)
• White (93.7 < L*< 95)
• Other (L* < 93.7)
NOTE: The L* values are white point values and can be
obtained by looking at the ream wrapper and/or from the
manufacturer.
The three pre-installed color groups cannot be deleted; Xerox
Qualified Stocks may be removed from your Stock Library, but
not from the Stock Catalog. However, you may add new, non-
Xerox stocks to the existing stock groups. It is advantageous to
do so, as long as the new stocks share the same white point
value.
Additionally, it is suggested that you place any colored stocks
you wish to use in the Other group, although perfectly fine results
can be achieved by placing all stocks in the white group. While
these suggestions may not seem to make sense, they work well
in practice. Most users who print on beige stock, or light blue
stock, for instance, are generally willing to trade off maximum
color consistency for the ability to produce good-looking prints on
non-standard media.
An advantage to maintaining the "3-stock" model is that it limits
calibration to only three representative stocks. The "3-stock"
model is recommended for most workflows, requiring a little
more setup than the "unspecified" workflow but achieving better
color outcomes.
Color Management Guide