Tom you did not read what I wrote, I said reported. This indicates
it may not be out of ink.
Many of these companies have admitted, they put a timer type of chip
on the cartridges to count number of copies made, and default it to
report empty at the number of copies made. (not empty carridge) This
is bad business.
On Epson's you are totally correct. They use a pump and pump the ink
to the print head which is separate from the cartridge.
On the Konica/Minolta Color Laser, it recently reported an error and
stopped printing. Turns out that they have a fuse on the Drum that
blows after so many print jobs. replaced the fuse and I am back
printing. Drum will have to be replaced some time, but it is not
used up yet.
My Epson also stops when the ink is out, and when I replace the
cartridge I can hear the printer pumping ink to the print head. I
also know if I leave it sit too long, I need to run a couple of
cleaning cycles to clean the head so it will print properly again.
Ink Jet printer manufacturers have become Ink Makers who also sell
printers, as the profit margin on the ink is a hell of a lot higher
than it is on the printer, and they know they can make tons more
money on Ink than printer.
An HP does not have pumps (unless you get one of the L models)
because the print head is also part of the cartridge.
I have been a little leery of the HP pro series as it does have
wonderfully separate ink cartridges, but it also sports two print
heads. I have not read how long they will last.
Stewart
At 05:43 PM 3/2/2009, you wrote:
If an inkjet cart runs to empty it will pump air into the printer's feed
tubes. This is hard for an owner to repair. So the printer will have to
be sent out for service or replaced. This will make the owner very
unhappy. It is good engineering to make sure that this will not happen.
Well worth leaving a few cents of ink behind.
Don't take advice from people who don't understand how inkjet printers
work.
Rev. Stewart A. Marshall
mailto:[email protected]
Prince of Peace www.princeofpeaceozark.org
Ozark, AL SL 82
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