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Canon G3501 printing/ink supply issues
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[QUOTE="beneix, post: 222138, member: 19367"] UPDATE: Printing has now returned to normal, after about 20 more "normal" print-outs. My conclusion is that even when the ink is fully returned to the tube and to the head, and with clean nozzles, somehow there is something (perhaps the level of pressure in the ink supply tubes) that still requires a number of print-outs to return to normal. My advice to anyone else having issues with the Canon ink tank series is to keep a watchful eye on the ink tubes, especially after opening the holder of the print head(s). As you do this, you break the seal between the ink tube and the ink entrance on the print head. This allows air to intrude into the ink tube and ink retreats towards the tank. When you then close the head assembly again, you can try as much as you like to run printing, cleaning and even deep cleaning – without a continuous path of ink all the way into the head, you will have issues. The only way to deal with this is to use something to clamp the ink tubes before opening the head assembly, to prevent the ink from retreating. If necessary, unclamp and use a syringe to pull ink back all the way until you have no air in the tubes. Then only remove the clamps after the assembly is shut closed so that the tubes seal against the head ink openings. [/QUOTE]
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Canon G3501 printing/ink supply issues
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