Maintaining Copier Consistency; Print Device Gamut - Canon ColorPASS-Z5000 Color Manual

B
B-2 Color Management
Color transparency film
RGB monitor
Offset press (white)
Other print device

Maintaining copier consistency

The factors described below affect print device consistency, as well as color fidelity and
overall output quality.
Paper stock and toner
The paper and toner used by your copier can greatly affect printed color. For best
results, use the supplies recommended by the manufacturer of the copier.
Maintenance
Problems such as streaking and insufficient or excessive amounts of one or more toners
arise when a copier does not receive periodic maintenance or needs major repairs. In
addition to having it serviced regularly, monitor the condition of your copier by
making standard test prints at regular intervals. You can do this easily by printing the
ColorPASS Test Page. Save the prints and show them to the service technician
whenever output densities vary from the norm or other problems appear.

Print device gamut

Different color reproduction techniques have different color capabilities, or gamuts.
Color transparency films have comparatively large gamuts, as do color monitors. The
color gamut that can be produced using process inks or CMYK toners on paper is
smaller. This is why some colors that can be displayed on a color monitor, especially
bright saturated colors, cannot be reproduced exactly by your ColorPASS copier—nor,
for that matter, can they be reproduced on a press using process colors. Moreover,
different print devices have different gamuts—some colors that your copier can
produce cannot be reproduced on an offset press, and vice versa. The following
illustration provides a graphical representation of this concept.