Canon imagePROGRAF GP-2000 imagePROGRAF GP-4000 GP-2000 series User Manual - Page 712

The back side of the paper is dirty Check 1 Was the previous print job borderless, or printed on small paper? Open the top cover and clean the platen. Cleaning Inside the Top Cover Check 2 Is Detect paper width in the touch screen menu set to Disable? Printing with Detect paper width set to Disable may cause the platen to be dirtied. Set Detect paper width in the touch screen menu to Enable, and then open the top cover and clean the platen. Cleaning Inside the Top Cover To continue printing with Detect paper width set to Disable, first open the top cover and clean the platen, and then manually feed roll paper over the platen when printing. Cleaning Inside the Top Cover Feeding Roll Paper Manually Check 3 Paper may be gripped weakly over the platen. Set a higher Transport unit vacuum strength in the touch screen menu. Adjusting Vacuum Strength Check 4 Is the setting of Extension for borderless printing in the touch screen menu large? The platen may become dirtied by setting a large amount of extension. Reduce the setting of Extension for borderless printing in the touch screen menu to less than the current setting. Menu Structure Check 5 If using plain paper, is the media type set to Plain papers? 712