OMG, I totally remember those. They made this upper frequency shreek, as they ever so slowly printed each line. And the print out wouldn't even be nice dark contrast, it was grey, and you liked it! Why? It was all there was, so we thought.
Then when ink jets came out, what an improvement that was, imagine that, a printer that is quiet, you could hear yourself think. Trouble is, this was also about the period when companies saw a huge money grab opportunity with ink cartridges.
When laser printers came out in the 90's, they were the coolest, and IMHO, still are. I am actually still using an old HP 2100 laserjet printer, which is the same model my school used back in the day. And yes, believe it or not, this old thing still works lol.
The only bad thing about laser printers is that they use more expensive ink toners, mine basically cost 50 dollars per toner, and the printers use more power. But let me tell you, these printers have a long life, they can print thousands of pages before everything wears out on them.