Re: Print black only with HP printer

I have an HP photo printer and have been very pleased with it. I like
the ability to just change individual colors.
I think HP "accidentally" forgot to write in the program to just print
Black when that cartridge
has plenty of ink.
I have one cartridge that is out of color and it thinks that Magenta
is necessary to print black.:-)
Any workarounds ?
Thanks.

"Arthur Entlich" <e-printerhelp@xxxxxxxx> wrote in message
news:euBdl.119200$ln7.103188@xxxxxxxxxxxxxxx
Just to add a bit about permanent or semi-permanent ink heads.

There are two basic designs in inkjet heads, thermal and piezo electric.

Thermal heads actually use heat the ink in each nozzle to around boiling
so that stream develops in the ink and that steam pushes a drop of ink out
of the end of the nozzle. These head designs vary from ones integrated
into the cartridge (made for one time use, although some people
successfully refill these cartridges numerous times before the head fails)
to more robust ones which are separate from the ink cartridge and may last
up to 10 or more ink cartridge installations.

Thermal heads of either type (one time or permanent) cannot tolerate being
activated for printing without ink in them for long or they will get
overheated and melt or otherwise become damaged (burn out). Therefore they
require ink flow to protect them from damage. As such, in the case of a
permanent head design, if the ink cartridge runs dry, the printer shuts
down to prevent the head from being damaged. Also,, even if the head
wasn't activated in a printing scenario, it may still dry out and clog due
to not having ink in the cartridge.

With the "one fill" heads integrated into the cartridge, the assumption is
you will be tossing it and replacing it so it doesn't matter if it burns
out or clogs from drying.

Piezo electric heads are different as, although they are usually
permanent, they do not heat up to any great extent, as the mechanism to
move the ink is mechanical using an electrical pulse to change the
dimensions of a small pump to cause it to expel ink out of a nozzle.

Although these heads can also dry out and clog, they are less likely to
get damaged from running without ink in them.

Art

How does any of that information answer the OPS question about magenta being
needed to print black?


.

Relevant Pages

  • Re: Print black only with HP printer
    ... The complete second paragraph I've written explains the mechanics of a thermal head and that those printers with "permanent" heads shut down if any ink color runs out to protect the head from burn out, ... I have one cartridge that is out of color and it thinks that Magenta ... How does any of that information answer the OPS question about magenta being needed to print black? ...
    (comp.periphs.printers)
  • Re: Print black only with HP printer
    ... There are two basic designs in inkjet heads, ... Thermal heads actually use heat the ink in each nozzle to around boiling ... cartridge and may last up to 10 or more ink cartridge installations. ... Therefore they require ink flow to protect them from damage. ...
    (comp.periphs.printers)
  • Re: Print black only with HP printer
    ... There are two basic designs in inkjet heads, ... Thermal heads actually use heat the ink in each nozzle to around boiling so that stream develops in the ink and that steam pushes a drop of ink out of the end of the nozzle. ... These head designs vary from ones integrated into the cartridge to more robust ones which are separate from the ink cartridge and may last up to 10 or more ink cartridge installations. ... Thermal heads of either type (one time or permanent) cannot tolerate being activated for printing without ink in them for long or they will get overheated and melt or otherwise become damaged. ...
    (comp.periphs.printers)
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    ... I am saying neither the cartridge nor the head "knows" if it is getting ink or not. ... Rather that sensor is designed to determin eth temperature of the ink to estimate the viscosity of the ink, and it makes adjusting in the frequencies the heads use to be more responsive and accurate in dot position and size. ... It is possible you recieved a defective cartridge, chip or something else is wrong. ...
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  • Re: Use non-Epson cartridges and die!
    ... >> damage the heads because it simply isn't true. ... >> sometimes they even send you extra ink if it the ... > Epson are giving themselves a bad name judging by your comments don't ...
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