Canon imagePROGRAF iPF785 Basics Guide - Page 99
The surface of the paper is dirty, Printed colors are inaccurate, Application Color Matching Priority
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iPF785 Series The surface of the paper is dirty Cause You are printing on heavyweight paper or paper that curls or wrinkles easily after absorbing ink. The Ejection Guide is soiled. Corrective Action For film-based media such as Tracing Paper, set the VacuumStrngth to Standard, Strong or Strongest in the Control Panel menu. If the paper still rubs against the printhead, set the Head Height in the Control Panel menu to a higher value than the current setting. (See "Adjusting the Vacuum Strength.") ➔User's Guide (See "Troubleshooting Paper Abrasion and Blurry Images.") ➔User's Guide Clean the Ejection Guide. (See "Cleaning the Printer Exterior.") ➔User's Guide The surface of the paper is dirty Cause The Paper Retainer is soiled. Corrective Action Clean the Paper Retainer. (See "Cleaning Inside the Top Cover.") ➔P.42 You are using a paper that does not dry easily. In the Control Panel menu, set Roll DryingTime to at least 1 min. (See "Menu Settings.") ➔User's Guide When paper that does not dry easily is used for printing, it may curl during printing and touch the Output Tray. In this case, in the Control Panel menu, complete the settings for Dry time and Area in Scan Wait Time. However, note that printing will now take longer. (See "Menu Settings.") ➔User's Guide Troubleshooting The back side of the paper is dirty Cause The Platen has become dirty after borderless printing or printing on small paper. The Platen has become soiled because you have set Width Detection to Off in the Control Panel menu. The Paper Retainer is soiled. Corrective Action Open the Top Cover and clean the Platen. (See "Cleaning Inside the Top Cover.") ➔P.42 Set Width Detection to On in the Control Panel menu, and then open the Top Cover and clean the Platen. (See "Cleaning Inside the Top Cover.") ➔P.42 Open the Top Cover and clean the Platen. After this, manually advance the roll onto the Platen before printing. (See "Cleaning Inside the Top Cover.") ➔P.42 (See "Feeding Roll Paper Manually.") ➔User's Guide Clean the Paper Retainer. (See "Cleaning Inside the Top Cover.") ➔P.42 Problems with the printing quality Printed colors are inaccurate Cause Color adjustment has not been activated in the Advanced Settings of the printer driver. Corrective Action In the Advanced Settings of the printer driver, access Color Settings in Color Mode to adjust colors. (See "Main Sheet (Windows).") ➔User's Guide (See "Main Pane (Mac OS X).") ➔User's Guide Colors have not been adjusted on the computer or monitor. Refer to the computer and monitor documentation to adjust the colors. Adjust the settings of the color management software, referring to the software documentation as needed. The Printhead nozzles are clogged. Print a test pattern to check the nozzles and see if they are clogged. (See "Checking for Nozzle Clogging.") ➔User's Guide Application Color Matching Priority is set to Off in the Windows printer driver. Click Special Settings in the Layout sheet of the printer driver, and set Application Color Matching Priority to On in the dialog box that is displayed. (See "Layout Sheet (Windows).") ➔User's Guide 99 Basic Guide