don't look too much for a rear input slot.
if you can get the head to work good on paper/ohp tansparency with the
"special" ink you
have won.
there is a always some way to modify it to accept pcbs.
you can cut out a straight path and then use a big pcb as "desk" plate. on
this you mount the actual pcb to be printed on.
it might be too difficult to get it accept lots of different pcb sizes.
the hp i have with rear input slot would need a lot of modification too.
because it is only built to accept thin media like envelopes.
also the height of the print head is very important.
make this adjustable.
the one hp i have has a lever which pivots a excentric beared rod which
supports the head assembly.
it is for setting it to "paper" or "envelope".
maybe something of this kind is needed.
regards
stefan
On Mon, 23 Jun 2003 16:26:18 -0000, Steve <alienrelics@...> wrote:
> Very good explanation of the difference between piezo and
> thermal/bubblejet. However, despite the website describing thermal
> heads as temporary, part of the ink cartridge, and short-lived, I've
> used two Canon BJC 610 inkjet printers for quite a few prints without
> ever replacing the heads, sold one and the other finally did clog
> badly but it was so old by then that I bought another printer rather
> than put herculean effort or pay $12.95 for a new head. Then a Canon
> BJC 5000 that clogged badly enough to require replacement about every
> 6 ink replacements. Now a Canon BJC 6000 that I've used quite a bit
> but has never (knock on wood, ow my head!) yet needed a new print head.
>
> With Stefan's experience and your's and others observations, I am
> going to see if I can pick up a working Epson inkjet since they are
> Piezo. Loads of Epson 600's in the thrift stores here lately, but they
> don't have a straight through paper path. Are there any Epson inkjets
> that have a rear feed slot and a straight paper path?
>
> Steve Greenfield
>
> --- In Homebrew_PCBs@yahoogroups.com, "grantfair2001"
> <grant.fair@s...> wrote:
>> Stefan - here is some basic info on printhead design, for what it is
>> worth.
>>
>> https://www.inkzone.com/resource/ptech.cfm
>>
>> I am wodering if the heat in your print head acted as a catalyst and
>> the polymers cross linked. That would make a "clog" I think.
>>
>> A chemist friend who develops plastics for Dupont thought that the
>> potassium permanganate you probably used acted as a catalyst and
>> triggered cross-linking. I will ask him about the heat theory, too,
>> when I get a chance.
>>
>> Grant
>>
>
>
>
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