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Re: HP 3755 Printer, Black Ink Mystery

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From Boris <Boris@invalid.invalid>
Newsgroups comp.periphs.printers
Subject Re: HP 3755 Printer, Black Ink Mystery
Date Fri, 27 Dec 2024 05:59:42 -0000 (UTC)
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Tony <lizandtony@orcon.net.nz> wrote in
news:part1of1.1.#oXtwiQt3MA89g@ue.ph: 

> Boris <Boris@invalid.invalid> wrote:
>>Printer is an HP DeskJet 3755.  It uses a tri-color cartridge, and a 
>>black cartridge.  It's connected to various Windows computers via a 
>>Netgear router.  Connection is fine.
>>
>>The black cartridge is empty, as demonstrated by the fact that when 
>>printing a 'Test page', all that is printed is the blue printer icon,
>>and also in blue, the words "Windows Printer Test Page".  
>>
>>When printing any multi-color document, all colors are printed, but 
>>nothing black, such as text, appears.  OK, it's out of black, but...
>>
>>If I use the printer's control panel to print out internal reports
>>such as "Printer Information Page", or "Printer Status Report", which
>>are in black text, these reports are printed perfectly in black.
>>
>>How is this possible?
>>
>>Hmmm...print jobs issued from Windows don't print black, but print
>>jobs issued internally from the printer's control panel do print
>>black. 
>>
>>I downloaded and ran HP's Print and Scan Doctor for Windows.  It said
>>it corrected a printer issue (it didn't identify the issue), and then
>>went on to check ink and printing quality, such as alignment and
>>cleaning printheads.  The result was that colors were fine, alignment
>>was fine, but it didn't print out any black patterns, saying that the
>>black cartridge was empty.
>>
>>So, HP's own diagnostic verified black ink was empty.
>>
>>But where does the black ink come from to print the internal reports, 
>>perfectly?
>>
>>Any ideas?
> If the black cartridge is empty then the only way that the printer can
> print black is to use the colour cartridges. That is probably what is
> happening. The printer is probably designed to combine the colours to
> print black for internal reports.

Tony, you may have been correct.  I finally got around to getting a new 
black cartridge (the printer is 3 hours away from where I normally 
reside, thus the long time to reply).  Once installed, the printers is 
working beautifully.  It prints black (and all colors) perfectly.
Thanks for the reply.

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Thread

HP 3755 Printer, Black Ink Mystery Boris <Boris@invalid.invalid> - 2024-11-27 23:31 +0000
  Re: HP 3755 Printer, Black Ink Mystery Tony <lizandtony@orcon.net.nz> - 2024-11-28 19:22 +0000
    Re: HP 3755 Printer, Black Ink Mystery Boris <Boris@invalid.invalid> - 2024-12-27 05:59 +0000
      Re: HP 3755 Printer, Black Ink Mystery Tony <lizandtony@orcon.net.nz> - 2024-12-30 09:30 +0000

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