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"LA Awesome" is a very strong cleaner! It works well on outdoor cooking grills and similar really greasy deposits. On the bottle, it notes it is not recommended for glass. The recommended cleaner for Canon carts is Original Windex. I would NEVER let LA AWESOME (diluted or not) enter a print...

Be aware that that type of cart will still have a foreshortened life, since that type of print head has marginal cooling. NEVER let that style of cart run empty of ink, or will be certain to overheat the print head. The ink itself is a major source providing cooling of the head.

Good to hear a new cart did the trick.

I've replaced waste ink pads on my I960 and my MP730. It's like, one step beyond accessing the waste pump discharge tubing. Quite possible, but very tricky. Lot's of room for error...

It's gotta be a real "dig" into the guts of a Canon Printer to access the purge pump discharge tube...

I the timing encoder is clean, I have no solid answer. It certainly appears to occur during bi-directional printing due to the regular stepwise offsets. Perhaps the print head is "confused" about what nozzles to fire?? The alignment print "should" exhibit evidence of bi-directional offset...

IMO, the offsets are being generated during bi-directional printing, and not from paper feed issues. Higher quality paper selections typically force uni-directional printing. That points right back to the timing strip. Just one drop of ink in the wrong place will be counted (or obscure) as an...

The integral print head on the PB cart has probably failed electronically. I would not expect them to last long, as they don't have a great heat sink to dissipate the generated heating during operation (Canon print heads operate by flash boiling the ink to "spit" it out the nozzle). The black...

Happy new year, and welcome!

The photos of your nozzle plate can nowhere near determine any positive issue. This nozzle plate "chip" is one of the most complicated in the industry. ONE single blown conduction path can cause what you are seeing (which appears to be from bi-directional printing). Instantaneous currents...

Best wishes from Laramie, Wyoming (currently -3 degrees F).

About home printing... https://www.dealnews.com/features/Are-Printers-Still-Necessary-in-2019/2208539.html BTW, Happy New Year!!!

Yes, you might have stubborn deposits/precipitate in the fine print head yellow ink passageways.

You gotta wonder... IF, the reservoir is "air tight", how does the air above the ink level in that reservoir get in there as the ink level drops?? The ONLY way is through the vertical slots and ink connection passage between the sponge compartment and the reservoir compartment. Perhaps your...

Lenticular clouds over the Laramie Valley (it DOES get quite windy here...).

Yum!

+1...what Stratman said. I would use Origional Windex rather than dish soap, but given enough time both should work to dissolve a stubborn clog in dye inks. Pigment ink clogs can be VERY hard to deal with...

That implies that the purge unit is not leaking (which is good). I cannot explain the empty carts.

Those carts should not have emptied (if you story is correct). They may have drained out while installed. When you flooded the ceramic pads, did they hold a pool of liquid (they should have), or did the fluid seem to drain away?

Has anyone with either of of these printers reached the point of full waste ink pads/diapers?