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Re: [Homebrew_PCBs] Inkjet printing to copper - finally the ink resists! (like crazy!)

2006-08-01 by Stefan Trethan

There's so much more that needs doing.
Curing time effects
Different / other inks (hopefully cheaper)
Doublesided alignment
Component legend print
Use of ink as soldermask
How about soldermask AND component legend (inks running together).

We are still at the beginning i fear.
If you compare it to toner transfer this is equivalent to a very limited  
stage, like a exactly specified brand paper, a special model printer and  
laminator, exact procedure,...
We know that a huge variety of ways will make good toner transfer, i think  
we need to research that for inkjet printing now.

Anyway, i think anyone would be able to get to a starting point that works  
with what i used, i tried to keep it cheap and easily available with the  
C84 although it is probably fairly complicated to modify for not very  
mechanically inclined people. Someone maybe should try the CD printer now.

I'll also have to get the other inks at some point (have only yellow and  
black so far), and more yellow (used half of it already during the  
experiments, especially at the beginning with the bad carts and while the  
vacuum pump was still enabled). I have this silly idea of a full 4-color  
component legend in my head ;-)

BTW i'm surprised how well the C84 head stays working. I have disabled the  
vacuum pump so it can no longer clean the head. The nozzles will usually  
still work after days of sitting there without any cleaning, and if one  
fails it is easy to fix by sucking on the vacuum line with a syringe (suck  
about half a second then move the head off the parking station and suck  
the ink out of the line, plug the line closed). If you think how much ink  
the vacuum pump sucks out unnecessarily...

ST


On Tue, 01 Aug 2006 22:32:17 +0200, Myc Holmes <mycroft2152y@...>  
wrote:

> Don't belittle the effort, You did put some numbers on the process. that
> makes it much more capable of being repeated. Thats a lot better than
> heating it over a burner until it turns violet-- too subjective.
> Myc
> To the rest of you guys, pick yourself up off the floor, I am really
> complementing Stefan.
> :)

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