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'[SX] Must see - drive ink jet cartridge directly'
2006\03\01@173431 by Peter

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There is a contest on too, up to $30k prizes.

http://www.mattgilliland.com/

Peter

2006\03\02@052135 by Russell McMahon

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$3,000, alas
But knowing what's involved in driving an inkjet cartridge is
worthwhile.
Saves having to get ones oscilloscope out :-)

> There is a contest on too, up to $30k prizes.
>
> http://www.mattgilliland.com/

2006\03\02@055853 by Philip Pemberton

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In message <00bf01c63de3$1c18b690$d201a8c0@y2k>
         Russell McMahon <spam_OUTapptechTakeThisOuTspamparadise.net.nz> wrote:

> $3,000, alas

I'm tempted to enter, but less for the prizes and more for the fun. I have no
need for another printer - my Epson Stylus C64 does a perfectly passable job
of photo printing, and my Panasonic KXP7110 laser printer does pretty much
everything else...

Hmm... 18F452 wired up to a printhead....

> But knowing what's involved in driving an inkjet cartridge is
> worthwhile.
> Saves having to get ones oscilloscope out :-)

Heh. Saves a great deal of "which pin is which?" type guesswork too.

Like said, I'm tempted to buy a couple of printhead carriers and a cartridge
to play with. The big problem being shipping fees and import duty/VAT...

Thanks for the link though, Peter - very interesting nonetheless.

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2006\03\02@141156 by Peter Todd

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On Thu, Mar 02, 2006 at 12:34:33AM +0200, Peter wrote:
>
> There is a contest on too, up to $30k prizes.
>
> http://www.mattgilliland.com/

Wow, and here's me getting all excited about a simple hammer receipt
printer with a possible parallel interface that I found...

I could make some really nifty art with that, 3d surface printers
anyone? Or perhaps printing ink onto sensitised light-developing
PCB-like substrates, the trick being, with proper 3d control of the
print head, the substrate can be a curved surface and you'd end up with
circuits built onto 3d objects. That technology has been done, but not
in that manner, nor anywhere near as potentially cheap.

Hexapods are a nice way to get relatively cheap 3d machining. They
suffer from their flexibility, and are hard to keep ridged enough for
real machining, but I think they'd be fine for something as low pressure
as squirting ink.

Just gotta find some way to plate copper onto arbetrary surfaces that
can withstand the soldering...

--
petespamKILLspampetertodd.ca http://www.petertodd.ca

2006\03\02@144351 by David VanHorn

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I thought it looked interesting, but their kit is $99, and the top prize
isn't all that much higher than the price of the kit.

I've never messed with an ink-slinger yet though.. Just thermals and
impacts.  Much the same I think, just a different sort of mess when you
breakpoint with a head driver enabled. :)

2006\03\02@150525 by Peter

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On Thu, 2 Mar 2006, Russell McMahon wrote:

> $3,000, alas
> But knowing what's involved in driving an inkjet cartridge is worthwhile.
> Saves having to get ones oscilloscope out :-)

Oops. But it is 'cool'. Click on the video link on that page. I found
that video very motivating ;-)

Peter

2006\03\02@150825 by Peter

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On Thu, 2 Mar 2006, Philip Pemberton wrote:

> Heh. Saves a great deal of "which pin is which?" type guesswork too.
>
> Like said, I'm tempted to buy a couple of printhead carriers and a cartridge
> to play with. The big problem being shipping fees and import duty/VAT...
>
> Thanks for the link though, Peter - very interesting nonetheless.

Just keep in mind that the inkjet head featured in that contest is not
the kind in your normal printer. It is a rugged industrial head used for
package marking, ticketing and such. It has only 12 nozzles. Your normal
inkjet will have at least 50 on the black cartridge alone, and drive
them in a matrix (the head used in the contest is straight driven).

Peter

2006\03\02@153616 by William Killian

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> -----Original Message-----
> From: .....piclist-bouncesKILLspamspam.....mit.edu [EraseMEpiclist-bouncesspam_OUTspamTakeThisOuTmit.edu] On
Behalf
{Quote hidden}

It is hard for me to get all excited about print heads.  My first 'real
job' as a software engineer was with Genicom where I did firmware for
laser, dot matrix and shuttle matrix (a weird sort of sideways dot
matrix comb vibrating horizontally firing pins when they were both in
place horizontally due to the swing and vertically due to paper slew.
Used to have boxes of print heads laying around.

But then again firing jets of colored ink...  Hmm... maybe that could be
fun.



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2006\03\02@205340 by kravnus wolf

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yeah, me saving on oscilloscope too......


john

--- Russell McMahon <@spam@apptechKILLspamspamparadise.net.nz> wrote:

> $3,000, alas
> But knowing what's involved in driving an inkjet
> cartridge is
> worthwhile.
> Saves having to get ones oscilloscope out :-)
>
> > There is a contest on too, up to $30k prizes.
> >
> > http://www.mattgilliland.com/
>
> --

2006\03\02@234513 by William Chops Westfield

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On Mar 2, 2006, at 2:20 AM, Russell McMahon wrote:

> But knowing what's involved in driving an inkjet cartridge is
> worthwhile.

Note that HP's thermal inkjet technology is substantially different
in principal than (for instance) piezo-electric inkjets as using on
many other printers.  Presumably finite lifetime of the thermal
elements is one reason for their starting down the "cartridges are
more expensive than the printer" road that Russell dislikes so much.
(technically speaking, there are a lot of good reasons to include
printheads in the easily replaceable ink-unit; it's too bad
economic considerations have made such a mess of the concept.)

BillW

2006\03\03@002408 by William Chops Westfield

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On Mar 2, 2006, at 12:36 PM, William Killian wrote:

> But then again firing jets of colored ink...
> Hmm... maybe that could be fun.
>
I want to turn the "empty" cartridges into "misters"...

BillW

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