I know you're talking about printers, but I'm having the same problem with my Canon scanner and ended up on VueScan's site. They have software that will allow me to continue to use my perfectly good 8800F scanner when I have to replace my MacPro5,1 with a new iMac.
It will cost (roughly) £40 to get a flatbed scan, but £90 to use the scanner to its full potential (film).
A new flatbed Canon scanner (including software) is £65. I suppose I should stump up the extra £25 to prolong the 8800F's life and "save the planet". But, how much longer will this 10-year-old scanner last?
iMac (19,1, 3.1 GHz i5, 12.7.4, 40 Gb RAM); MacBook Air (1.8 Ghz, 8 Gb RAM, 10.14.6, 256 Gb SSD) Vodafone router and Devolo Wi-Fi Extender, Canon TS8351 printer/scanner.
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