Question about Cannon i70 Printer

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Variable ink darkness

Every other line prints dark then light. And some lines appear wavy. If line 1 is dark, so is line 3,5,7,9, etc. And lines 2,4,6,8, etc. will be light. We use the printer almost every day to some degree. We have replaced ink cartridges. No change. We did deep cleaning and ran out a black ink cartridge. No change.

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Re: Variable ink darkness

If the printer has been used exrensively then its probably the printhead that needs replacing. The i70 printer uses a QY6-0046-000 Canon Printhead Printheads are available from many sites on-line and thru PC World

Posted on Dec 31, 2006

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Did the dark lines start after the change? If so, maybe the drum on one of the cartridges is damaged. (Since you mentioned dark, I'd suspect the black cartridge.) Try replacing cartridges.

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Remove the cartridge and put it back in. If same issue persists, try to do head cleaning and nozzle checks simultaneously from the computer.

Start -> Control Panel -> Printers & Faxes (Windows XP) / Printers (Windows Vista) -> Printer Icon (right click) -> Printing Preferences -> Maintenance

You should be able to see nozzle check, click it and follow the prompt. Line patterns that corresponds to the colors of the ink cartridges would be printed. If breaks on those patterns appears, continue with head cleaning. Try to do this about 3 times until all patterns are complete.

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Dark copies (whole pages) are usually a result of poor charge of the drum. Drum is that green thing (usually, seen blue ones too). You get text and graphics in places, where the drum has been discharged (light discharges drum). So if everything is dark - the drum is discharged fully, or not charged at all. Look for bent, dirty or missing connector plates, springs, paper covering contacts. If you get lines it could also be the fuser (hot thing) - needs replacing. Everything depends on how the copy looks like, I would have to see it. Hope this is helpful somehow ;-)

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