Canon imagePROGRAF iPF9400S User Guide - Page 904

The contrast becomes uneven during printing iPF9400S 6 Using the back of the Cleaning Brush, move the Switch to the side opposite ●, corresponding to the size of the paper for printing. In this case, note that you will move the switch in the opposite direction from the direction in step 4. • The Switch only moves number 1 and the number that matches the paper size. Set all of the switches where the Note number does not match the paper size in switches number 2 and higher to the ● side. 7 Close the Top Cover. Troubleshooting Problems with the printing quality The contrast becomes uneven during printing Cause The paper feed amount is out of adjustment. The type of paper specified in the printer driver does not match the type loaded in the printer. Corrective Action Adjust the feed amount. (See "Adjusting the Feed Amount.") →P.813 Load paper of the same type as you have specified in the printer driver. (See "Loading Rolls in the Printer.") →P.541 (See "Loading Sheets in the Printer.") →P.563 Make sure the same type of paper is specified in the printer driver as you have loaded in the printer. 1. Press the Stop button and stop printing. 2. Change the type of paper in the printer driver and try printing again. The length of printed images is inaccurate in the feeding direction Cause Corrective Action In the Control Panel menu, Adj. Priority is set to Print Quality. Set Adj. Priority to Print Length in the Control Panel menu, and then execute Adjust Length. (See "Adjusting the Feed Amount.") →P.813 The type of paper specified in the printer driver Load paper of the same type as you have specified in the printer driver. 904 does not match the type loaded in the printer. (See "Loading Rolls in the Printer.") →P.541 (See "Loading Sheets in the Printer.") →P.563 Make sure the same type of paper is specified in the printer driver as you have loaded in the printer. User's Guide