Canon imageRUNNER C3100 N Printer Manual page 86

The color does not match the other imageRUNNER C3100/C3100N that you are using at the
same time
Cause 1
Remedy
Cause 2
Remedy
The specified color of thin lines or filled-in patterns do not print or disappear
4
Cause 1
Remedy 1 Adjust the color in the software application you are using and print the data
Remedy 2 Change the pattern in the software application you are using and print the data
Cause 2
Remedy 1 Change the density of the color and print the data again.
Remedy 2 Change the direction of the paper and print the data again.
Remedy 3 Set Halftones in the printer driver to 'Error Diffusion' and print the data again.
NOTE
You can also perform the same procedure from the touch panel display. (See "Halftones,"
on p. 2-25.)
4-10 Printing Problems
There is a slight unevenness in the Y (Yellow), M (Magenta), C (Cyan), or K
(blacK) toner density.
Slightly adjust the toner density of the Y (Yellow), M (Magenta), C (Cyan), or K
(blacK) toners. (See "Toner Save," on p. 2-10.)
The machine's density settings are not adjusted correctly.
Perform an Automatic Gradation Adjustment. (See Chapter 4, "Customizing
Settings," in the Reference Guide.)
The combination of the color or pattern cannot be reproduced correctly.
again.
again.
The color looks different due to the halftone pattern.
(See the Help function on the printer driver.)