Archived from groups: comp.periphs.printers (
More info?)
In article <2op7g5Fd7e83U1@uni-berlin.de>,
Plan9 <benzplan9@hotmail.com> wrote:
> I recently purchased a Brother HL-1440. My first laser printer. I
> have always powered off all of my inkjet printers each night or when I
> did not expect to use them for several hours. My thinking was that
> the power down parked the print head/cartridges and kept them from
> drying out.
You mean you never actually read the owner's manuals for the inkjet
printrs in question? You just decided that you must know better based
on your hunches, therefore why bother with reading the manufacturer's
specifications.
There's a lot of "my thinking was..." going on in the world, and that's
how old wives' tales come about. Then you get to have kids, and you
pass your "wisdom" on to your kids, then they turn out dumb as stumps as
well.
> According to the HL-1440 user guide the printer only uses 6 watts of
> power during sleep mode and there is nothing to dry out.
That's correct.
> So should I
> just leave it on or power off each night? Any harm to the printer
> either way?
What does the manual say?
You have a TV and a VCR, right? Do you power those off? By power off,
I mean do you actually cut ALL power from going to those devices when
you're not using them?
No, you don't. When you hit the power button, they go to sleep. Their
internal circuitry is still alive and consuming power; they're keeping
time, channel memories, etc, and they're listening for a remote control
or internal timer code to tell them to turn on the rest of the
circuitry, fire up the tube, start the tape rolling, etc.
Look at your TV and VCR manuals, and see how much power they consume
when "off".
So you don't actually turn OFF your TV and VCR when you're not using
them, right? You don't go and hit a power strip switch or anything, or
some master power button (sometimes called a "vacation" button) on the
TV, right?
The laser printer is no different. When sleeping it's powered all the
way down except for the same bare minimum current required to keep the
circuitry alive that looks for a print job coming in. When a print job
comes in, the rest of the machine powers up and prints the job. Then it
goes back to sleep again after a few minutes.
Modern HP printers don't even have an on/off switch. The most they ever
power down is to sleep mode--just like the most your VCR ever powers
down is sleep mode. Some current is ALWAYS going through the thing.
For extended absences, unplug the thing. Otherwise, leave it plugged in
and let its internal circuitry decide when to turn the fuser and motors
on and when to leave them off.
An actual power switch isn't needed nowadays, and is overkill.