topic Re: TR8620a - Ink Carts Won't Work in Desktop Inkjet Printers

TR8620a - Ink Carts Won't Work

twillis — Fri, 07 Aug 2026 03:28:53 GMT

hey is anyone else having issues with their ink carts? I bought some that say they are compatible but the printer says they don't work. like they both say canon on them but the numbers are different. so I have an old blk cart and the number is 281, the replacement I bought is blk but the numbers are 251. they look exactly the same except one spot under the bottom, so instead of it being smooth it has like a little sensor underneath. other then that they are the same. does anyone know how to fix this?

Re: TR8620a - Ink Carts Won't Work

jrhoffman75 — Fri, 07 Aug 2026 11:59:29 GMT

@twillis wrote:

hey is anyone else having issues with their ink carts? I bought some that say they are compatible but the printer says they don't work. like they both say canon on them but the numbers are different. so I have an old blk cart and the number is 281, the replacement I bought is blk but the numbers are 251. they look exactly the same except one spot under the bottom, so instead of it being smooth it has like a little sensor underneath. other then that they are the same. does anyone know how to fix this?

That is not the correct cartridge. The 281 is the correct number. There is no fix other than purchasing the correct cartridge.

Re: TR8620a - Ink Carts Won't Work

SignifDigits — Fri, 07 Aug 2026 11:59:53 GMT

Per the same question at https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/PIXMA-TR8620a-CLI-251-vs-281-Ink-Cartridge-Compatibility/td-p/400964 Your printer is NOT compatible with 251 inks. These are the ONLY inks your printer is compatible with: https://canon.us/3ipDm6u

Re: TR8620a - Ink Carts Won't Work

normadel — Fri, 07 Aug 2026 19:52:17 GMT

Why did you buy the 251? From who? It would not say it was compatible with YOUR printer.