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Man-in-the-Middle PCB Unlocks HP Ink Cartridges
(hackaday.com)
This is a most excellent place for technology news and articles.
Nowadays you have tank printers. They're more expensive upfront but the ink is much cheaper. It's even cheaper if you go for aftermarket ink. I have an Epson and it's great. Don't think I'll go with the cheap ink however, I just don't use it that much to justify the savings