Canon imagePRESS C800 Series Operation Manual page 231

Problem
Printed output has white
gaps between color panes.
An uneven density occurs.
Gradation problem occurs.
Temperature or humidity
changes significantly in the
print environment.
Uneven color planes occur. The Shading correction procedure assures consistent, even color
Slight color tone deviations
over time.
imagePRESS C800 Series
Solution
Enable the trapping preset setting.
Print quality settings on page 243
You can create new trapping presets.
Create a trapping preset on page 174
1. Perform the professional Auto gradation adjustment proce-
dure.
2. Perform the Shading correction procedure.
About calibration on page 160
1. Reset the Auto gradation adjustment calibration curves.
2. Perform the Auto gradation adjustment procedure.
About calibration on page 160
Perform the standard or professional Auto gradation adjustment
procedure.
About calibration on page 160
planes on the output.
About calibration on page 160
When printer calibration, automatic gradation adjustment and me-
dia family calibration cannot correct the slight colour deviations
you can use the automatic correction color tone (ACCT) function.
Register the color tones for the ACCT function on page
(See
(See Correct the color tones with the ACCT function on page
When also the ACCT function cannot fix the color tone deviations,
contact your local service representative.
(See )
(See )
(See )
(See )
(See )
(See )
Chapter 8 - Help
Problem Solving
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