Streaks (Lines) Appear In Gradated Portions - Canon LBP7780CX User Manual

07YL-0RW

Streaks (Lines) Appear in Gradated Portions

<Cause 1> When you are using the PCL/UFR II printer driver, gray compensation is applied to
the gray portions of the "streaks" in the diagrams.
Perform the following procedure in the printer driver.
UFR II Printer Driver
Display the [Quality] tab
Solution
PCL Printer Driver
See Help of the PCL printer driver.
You can specify the same setting from the printer's control panel.
"[Setup] Menu ([Quality] Options)"
<Cause 2> When you are using the PS printer driver, [TR Normal] or [TR Photo] in [Output
Profile] is applied to the gray portions of the "streaks" in the diagrams.
Set [Output Profile] in the [PS] options to [PS Normal] or [PS Photo].
Solution 1
"[Setup] Menu ([PS] Options)"
Set [RGB Pure Black Mode] in the [PS] options to [Off]. Also, you can specify the same setting in the PS
Solution 2 printer driver. For more details, see Help of the PS printer driver.
"[Setup] Menu ([PS] Options)"
1. Click [Details].
2. Click [Advanced Settings] in the [Detailed Settings] dialog box.
3. Set [Gray Compensation] to [Off].