Homebrew PCBs

Hello Robert,

I have adapted my C70 in a similar way. The middle top rollers were 
removed and also the white plastic rear paper guide. In the front I 
removed the middle star wheels. By using a 3 mm plexi-glass plate at 
the backside on top of the power supply (with some holes in it for 
cooling) to fill up the gap, I get a flat path throught the printer. 
What kind of material do you use for the "custom bed"? I was thinking 
about 0.5 mm aluminum, but that may ruin the abrasive roller coating. 
The next challenge is to reprogram the printer such that it prints one 
page from a preset reference y-axes position of the moving bed. How do 
you control the y-movement?

With kind regards,

Gerard

--- In Homebrew_PCBs@yahoogroups.com, Robert Hedan <robert.hedan@...> 
wrote:
>
> My solution for the C84 is to lift the upper part of the chassis by 
1/4" so
> that I could use a custom 'bed' for the PCB.  That way the traction 
roller
> didn't come in contact with the PCB surface, only the bottom of this 
drawer.
> I am removing the center of the top rollers leaving only the ones of 
each
> end.  That idea also lets me implement that 'auto-centering' idea 
for
> double-sided PCBs.
> 
> Now if I can only have enough sunny days to work on building it.
> 
> Robert
> :)
> 
> 
> > -----Message d'origine-----
> > De : Homebrew_PCBs@yahoogroups.com 
> > [mailto:Homebrew_PCBs@yahoogroups.com] De la part de Volkan Sahin
> > Envoyé : mai 12 2006 16:34
> > À : Homebrew_PCBs@yahoogroups.com
> > Objet : Re: [Homebrew_PCBs] Re: direct inkjet printing
> > 
> > 
> ...
> >  Another problem with Epson printers they are using abrasive 
> > roller for paper feeding/positioning  and when you use PCB 
> > you slowly started to damage the abrasive coating of roller. 
> > This causes y-axis starting position errors because of fast 
> > feeding during start phase of printing. Now, I have faced 
> > with this problem and decided to disable y-axis motor during 
> > paper intake/feeding phase. I think this will solve the 
> > problem. Any ideas?  So, what is the answer? I think, since I 
> > have so much experience and understand the operation of 
> > CX4200 and CX4800, I will choose CX4200 again.
> >      Cheers,
> > Volkan
>