Canon Color imageCLASS LBP712Cdn imageCLASS LBP712Cdn User Guide - Page 559

Troubleshooting Do you print data without margins? ● This symptom occurs if a margin is set to none in the printer driver. The marginal areas within the first 1/4" (5 mm) from the respective edges of paper are not printable (for envelopes, the top and bottom marginal areas within the first 3/8" (10 mm) from the top/bottom edge are not printable). Make sure to have margins around the document to print. [Finishing] tab [Advanced Settings] [Expand Print Region and Print] [Off] Are you using custom size paper loaded in correct orientation? ● Load the custom size paper in landscape orientation when you print without using the UFR II printer driver. ● Load the custom size paper in portrait orientation if the following conditions are met when you are using the UFR II printer driver. Paper Size in Select Feeder Menu Loaded Paper Long edge length is 8 1/2" (215.9 mm) or less. Streaks Appear/Printing is Uneven Have you cleaned the fixing unit? ● Clean the fixing unit. Fixing Unit(P. 567) Is the amount remaining in toner cartridge running low? ● Check how much toner is left, and replace the toner cartridge as necessary. Replacing Toner Cartridges(P. 568) Is it time to replace the toner cartridge? ● Materials inside the toner cartridge may have deteriorated. Replace the toner cartridge. How to Replace Toner Cartridges(P. 571) Are you using the machine in an environment with high humidity? ● Change the setting of . Selecting may improve the problem. Special Density Mode(P. 426) 553