Should printers be turned off at night, or left on to reduce wear and tear?

Question

I have a friend who leaves his Laserjet print on all night in his home office, primarily because he believes that turning on and off the printer causes wear and tear on the printer's electronic parts. I have to hand it to him -- the thing is ancient (10+ years) and it runs like a charm, but even on standby mode, the printer is using up a lot of energy.

I'm looking for hard facts that support either his point (he's an engineer) or mine that today's modern electronics are designed to be turned on/off regularly. I've done a pretty thorough search on why PC's should/shouldn't be turned on/off but have come across little on printers.

(BTW, there's also little *research* done on the actual impact of turning on and off PCs).

Answer 1

Every printer is different, but my HP Laserjet printer has a low-power mode it automatically goes in. Most smaller printers have no fans and the only 'wear and tear' you could experience would be having the little LEDs lit up. That's using hardly any energy at all.

Answer 2

Laser printers automatically recharges the ink supply periodically. Laser ink will age with heat so it has a timer to discard ready supply and pull on new. If his unit goes to true standby, this will not happen since the heaters are turned off and fans shutdown. It is a lot like sleep mode on a computer. A unit that is instant print is staying on and recharging the ink which can add up to cost since it is not being used. Also the heaters are active so the electrical use is higher.

Answer 3

Using energy? Puhleeze! Leave the stupid printer on.

Answer 4

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