@newssvr17.news.prodigy.com>, "shamanjp" <shamanjp
(nospam)@prodigy.net> says...
If you turn the printer off by pressing the power button the printer will
make sure that the heads are parked so they won't dry out prior to powering
down. If power is disrupted by turning off a power strip it's possible the
printer may be caught with the heads not in the parked position and the
heads could dry and clog.
JP
There are also some models which actually are keeping
track of the passage of time (even when powered down)
and will perform a quick "head clean cycle" before
printing if the firmware judges the cleaning is
required.
I had a 600 series Epson that would clog like crazy if
simply switched off on a power strip, but didn't clog
after I learned not to do this.
Considering the TINY ammount of power consumed by the
printer when its not printing, and the problems you can
get if you disconnect it, I recommend NOT DISCONNECTING
THE POWER FROM ANY INKJET PRINTER IF YOU DONT HAVE TO!!
For all but 2 of the printers that are connected to my
system (there are six connected) I dont even bother to
switch them off at all because the ONLY time any of them
give problems is after being off for an extended time.
One of the 2 that do get switched off is the Laser
printer (they draw a lot of juice and are designed to be
OFF when idle hence the "warm up" period built into
them) and an HP 7350 that has some kind of firmware bug
that causes it to "fall into a deep sleep" if it is left
on without being used for over an hour. The HP gets
powered down BEFORE the computer, otherwise it wont
respond to its own power switch (Im waiting to hear from
HP if this is a known bug or a defective unit its only a
few months old and has ALWAYS acted this way).
The other four units (HP 952c, HP1200 3in1, Canon S820,
Canon BJC 4550) NEVER get powered down, and (knock wood)
NEVER give clogging problems. All of these units get re-
inked by me with bulk ink (
www.inksupply.com)designed
specifically for the printer series, and I print a LOT!!
During horse show season the old Canon prints from 40 to
50 small (4x6 or 3x5) PROOFS a day, After proofing the
S820 will print those 40 or 50 pix to what ever size is
needed. The HP 7350 does 40 or so 5x8 prints a day, the
HP 3in1 does duty as a copier/fax 2 or 3 times a week,
and the 952 c does a hundred or so pages a week of
text/graphics.
I dont think I see or hear more than 2 cleaning cycles a
week from the lot of them except for after a power
outage when they ALL do long head cleaning cycles on
power-up(3 to 5 hours without power after ANY type of
rain or thunderstorm is normal/average for my power
company)