Simao Cardoso pravi:
> Slavko Kocjancic wrote:
>
>> I'm start journey to make inkjet head for printing pcb's. As far I
>> know all direct print inkjet have problem's with ink and head itself
>> is problematic. So I was just trying to make one pixel piezo head
>> capable to jet etch resist for making traces and after that to print
>> real solder resist mask.
>>
>
> Hi,
>
> There is something like that available
> http://www.microfab.com/equipment/devices.html
>
Seems good point. But its probably too expensive as price is not listed.
(If price is not listed on web then near all the time that is done to
not scare people)
Even 100Eur is high price for me.
> I have seen your name in CNC related threads, so if is in your interest,
>
Yes I'm on cnczone.com too. :D A lot of hobbyes but near nill money
makers.
> I remember one long thread of CNC related ideas from one guy which
> wanted to use an injector from a modern car diesel engine to build a CNC
> solder paste application machine. Interesting at first but stopped at
> the idea. I disassembled several diesel machines and repaired them,
> mostly big engines, is really fun for me, but all with classical
> injection system, newer car engines have constant pressure diesel pump
> and an electronically controlled injector with built-in valve. It may
> work as the devices above, never play with one but they should have the
> pressure valve and the very thin exit hole, so they need to be hacked.
>
I think in that way to. (presure maintained with pump and electronic
valve to open it) But as I know the injector has more exit holes not
only one.
> But you may consider an old HP head. Is simpler to build, and you can
> find cheap CISS systems on eBay for relevant ones. If you search for
> direct inkjet compositions they are mostly if not all for thermal heads.
>
There is the problem as I want to use real solder mask. and this stuf is
thick like honey. the epson head can't blow that stuf out of the nozzle.
> It can evaporate the solvent making higher solids on surface less on the
> inkjet, reducing viscosity and surface tension problems. Time ago when i
> was searching for this i found one company which had a custom built
> epoxy printer and the photo showed an HP45 head in there. Didn't wrote
>
If that's true then I realy like to find that link.
> down the url and can't find it anymore. And the
> guy-who-uses-this-group-to-make-money is selling this heads, you may
> find an old HP printer and extract some fun from it.
>
> Simao
>
>
>
Slavko.