Canon imagePROGRAF iPF6450 User Guide - Page 987

iPF6450 Printing is faint Problems with the printing quality Printing is faint ...987 Paper rubs against the printhead ...988 The edges of the paper are dirty ...988 The surface of the paper is dirty ...989 The back side of the paper is dirty ...989 Roller marks are left across the trailing edge of paper 989 Immediately after borderless printing, the trailing edge margin is soiled during regular printing 990 Printed colors are inaccurate ...990 Banding in different colors occurs ...990 Colors in printed images are uneven ...991 Image edges are blurred or white banding occurs 992 Setting the Blue Switch on the Platen ...992 The contrast becomes uneven during printing ...995 The length of printed images is inaccurate in the feeding direction 995 Images are printed crooked ...995 Documents are printed in monochrome ...996 Line thickness is not uniform ...996 Lines or colors are misaligned ...996 Borders appear during borderless printing ...997 Printing is faint Troubleshooting Cause You may be printing on the wrong side of the paper. The Printhead nozzles are clogged. Because the printer was left without ink tanks installed for some time, ink has become clogged in the ink supply system. Paper is jammed inside the Top Cover. Print on the printing surface. Corrective Action Print a test pattern to check the nozzles and see if they are clogged. (See "Checking for Nozzle Clogging.") →P.927 After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control Panel. (See "Cleaning the Printhead.") →P.928 Follow the steps below to remove the jammed piece of paper inside the Top Cover. Problems with the printing quality 1. Open the Top Cover and make sure the Carriage is not over the Platen. 2. Remove any scraps of paper inside the Top Cover. (See "Clearing Jammed Roll Paper.") →P.977 (See "Clearing a Jammed Sheet, Fed Manually.") →P.980 3. Close the Top Cover. The ink was not dry when paper was cut. Printing may be faint if Print Quality in Advanced Settings in the printer driver is set to Standard or Draft. You are printing on paper that tends to generate dust when cut. Specify a longer drying period in the Control Panel menu, in Paper Details > Roll DryingTime. (See "Menu Settings.") →P.663 In Advanced Settings of the printer driver, choose Highest or High in Print Quality. Printing in Draft or Standard mode is faster and consumes less ink than in Highest or High modes, but the printing quality is lower. (See "Giving Priority to Particular Graphic Elements and Colors for Printing.") →P.63 In the Control Panel menu, set CutDustReduct. in Paper Details to On. (See "Reducing Dust from Cutting Rolls.") →P.552 987 User's Guide