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Welcome! we may not have ALL the answers (yet), but we got some of 'em!

THANX! ...and I cannot resist posting again, this about 20 miles from me, and 10 miles north of Laramie, days ago...

I would have to say the print head has an electronic failure (sorry), but would prefer to see a service test print to confirm that. You might try removing the carts and print head, and re-seating everything...

I haven't been up there yet this year, but WYDOT finally opened the road last week. Gimme two weeks and I'll be up there. It really is one of the most beautiful places on this earth (IMO). It's reasonably easy for us "oldsters" to get up to the peak.

...and 5 Union Pacific locomotives (and a LONG freight) rumble by on one of the last original stretches of the Transcontinental Railway.

Oh boy! More headless and cartless printers on Craigslist and eBay. Best way to overcome a filled waste ink diaper...

Here you go...rain and virga veil the view across the Laramie Valley.

I'm stick'n to PLAIN PAPER (whatever that is)!

I also topfill. Part of my process is to keep the vent and outlet hole sealed during refilling. I refill until the clear plastic tab at the top of the ink reservoir side touches the ink. I install the silicone plug on the reservoir...THEN... ...I remove the outlet seal and squeeze the...

Yours truly removed the outlet clip of a new OEM cart before removing the serpentine vent cover (yeah, it's possible, just not easy)...AT 7400' ALTITUDE! The cart must have been filled near sea level. It equalized pressure....OUT THE OUTLET (what a mess)!

I can agree that Canon print heads have a design lifetime, probably based (loosely) on nozzle firing count, else they won't make it through the warranty period. I doubt that there's an actual "nozzle firing" register in the firmware that, when reached, initiates some sort of disabling function.

Canon pint heads "die" for several reasons. The most common (IMO) is the extreme current duty imposed on the microelectronics and microconductors in the print head nozzle "die" (no pun intended). To increase the life of a thermal (eg, Canon) print head: PRINT SLOWER! (use "night" or "quite"...

Don't give up yet...if a nozzle check shows ANYTHING in the PGBK matrix, even very faint lines, the PGBK nozzles are firing. Good luck.

Wow...so much...GREEN!!!

If you want B&W text docs only, I second the vote for a cheap monochrome laser printer.

I would like to see one of Hat's neighborhood view...maybe several!