There are two common types of laser printers. Those that have special paper that react to heat, such as receipt printers, would fit the description.
The other laser printers… Hm, I don’t think your description is accurate either. It’s more that the laser electrically charges ink particles so that they jump on to a separate roller that gets rolled on to the paper.
I’m no expert though.
Are you thinking about daylight savings time? I’d agree there, but timezones absolutely make sense, and we’ve always used some version of it. “See you at noon” has a sort of built in timezone, as does sunrise and sunset. We (all human societies) relate hours to the day in a similar, albeit more regular way. If you did away with timezones, you’d replace a minor inconvenience with a monstrous one. Everyone uses what, GMT? Naah