Canon imageRUNNER C3100 N - Manual (Page 90)

Printing Problems 4-14
4
T
roub
leshooting
The gray data appears grainy.
Cause The RGB Pure Black Process setting, in combination with the Prioritize Printing
of Line and Text setting in the printer driver or Output Profile setting on the
control panel, is affecting the gray part of the data.
Remedy 1 Disable RGB Pure Black Process and Prioritize Printing of Line and Text in the
Windows PS printer driver or Mac PS printer driver and print the data again.
(See the Help function on the printer driver.)
Remedy 2 Set RGB Pure Black Process to 'Off' and Output Profile to 'PS Normal' on the
PS menu from the touch panel display and print the data again. (See "RGB
Pure Black Process," on p. 2-37, and "Output Profile," on p. 2-35.)
NOTE
If you change the above settings, gray or black data is printed using CMYK toners.
Therefore, the data may be printed in color, even if all pages are monochrome.