1988
I used to work for a company that HP contracted us as reps to stand around best buys and office depots and such and sell HP. I remember sometime after the 02 inks went away reliability really took a dump. But 02, while more reliable in my experience, took 5 different color cartridges. Pricey (though I'd get free ink sometimes from the job).
Toward the end of my time there the printers were just hot garbage, and I went through two HP laptops in a short time (got a big discount on number 2).
I won't buy HP anymore.