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Canon G3501 printing/ink supply issues
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[QUOTE="beneix, post: 222082, member: 19367"] My G3501 worked flawlessly until this summer, when we were away from home for two weeks. When we came back, it wasn't printing magenta at all. I did cleaning, deep cleaning, nothing helped. I took out the printer head and pushed some ethanol/distilled water solution through it with a syringe and this fixed the issue. A few weeks later, the printer was playing up again, now for more than just magenta. I opened the printer and saw that there was air in the ink tubes. I cleaned both print heads with a cleaning solution. I also used a syringe to pull ink back to the print head tray and everything was OK after a few prints. Now this week the black ink was playing up and there was a little air in the black tube. I clamped all the tubes, removed the black print head, pulled the ink back, put the head in, un-clamped the tubes and did some test prints. Now it seems like there is only enough ink supply for the beginning of each print session, then the ink supply doesn't keep up. I printed this test page: [ATTACH type="full"]2620[/ATTACH] Here are detail crops from the section printed first by the head and the section printed last: [ATTACH type="full"]2618[/ATTACH] [ATTACH type="full"]2619[/ATTACH] As you can see, the black is almost perfect at the start and then it deteriorates. I am now wondering if there can be some obstruction earlier in the ink supply, somewhere at the ink tank or between the ink tank and the tubes, that makes for poor ink supply and also leads to air intrusion in the tubes. As the problem started when it was quite hot this summer and the printer was unused for several weeks, it seems plausible that it relates to ink drying out in some part of the printer. Has anyone else experienced anything similar? [/QUOTE]
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Canon G3501 printing/ink supply issues
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