Tom Hock
Getting Fingers Dirty
Could I have found the reason for frequent Canon print head clogging? I noticed when I put new ink tanks in my Canon i850 printer there doesn't seem to be much compression of the rubber seal between the ink tank outlet and the print head inlet screen. the ink tanks, when placed into position, are very easy to snap into the lock position with hardly any downward force to compress the seal, and the tanks are easy to rock from side to side, as they are not tightly seated. The original seals may have compressed over time.
If this seal is not tight, might air not get pulled into the print head? This could cause the ink to dry in the head and cause blockage or loss of color consistancy.
I just put my old Canon S750 back into service, and when I get some time (maybe in a month or two) I'll try to place a rubber washer on top, or under, the original rubber seal in my i850 to cause more compression and a better seal. I did a quick test by cutting a small rubber washer from a thin rubber sheet, maybe 1/32 inches thick, and placed it on top of the original seal. The ink tank still snapped into position with very little force, but did seem to be more secure. I'll try 1/16 inch thick rubber next. This has to improve the seal and I can't see any downside to this as long as I don't over do it. After all, it is supposed to be an air tight seal.
I would appreciate any thoughts you may have on this. Maybe someone with more time than I have right now will try this and report the results.
If this seal is not tight, might air not get pulled into the print head? This could cause the ink to dry in the head and cause blockage or loss of color consistancy.
I just put my old Canon S750 back into service, and when I get some time (maybe in a month or two) I'll try to place a rubber washer on top, or under, the original rubber seal in my i850 to cause more compression and a better seal. I did a quick test by cutting a small rubber washer from a thin rubber sheet, maybe 1/32 inches thick, and placed it on top of the original seal. The ink tank still snapped into position with very little force, but did seem to be more secure. I'll try 1/16 inch thick rubber next. This has to improve the seal and I can't see any downside to this as long as I don't over do it. After all, it is supposed to be an air tight seal.
I would appreciate any thoughts you may have on this. Maybe someone with more time than I have right now will try this and report the results.