Homebrew PCBs

mpdickens wrote:
> --- Adam Seychell <a_seychell@...> wrote:
> 
> 
>>The black ink in my old Epson 660 is extremely UV
>>blocking. I can expose a PCB over 5 times normal and
>>still not manage to effect the dark areas.
> 
> 
> Well, I'm no expert in the area of optical physics. 
> 
[deleted]>
> OTOH, this may be a total load of bullsh!t and a waste
> of my time. I'll let you know...
> 
> 

I have also looked at available inkjet resolutions because I'm very 
interested in how fine detail photomask you can get from a inkjet. The 
two printers I've tried (Epson 660, Cannon S330) can do 0.25mm (10 mils) 
trace/space widths.
Most new photo printers do 1200dpi+ on both axis, It would be 
interesting to compare the Cannon i560 (4800x1200dpi) with the S330 I 
currently own. Are the pigment based inks are darker ?
It seems that both Epson and Cannon are changing to pigment black inks 
on their photo inkjet printers.