On 04/11/13 20:22,
beefyzee@... wrote:
>
>
> More disaster. Taping a peice of plain paper to the transparency worked to
> fool the printer but the opaqueness of the black print was atrocious. Edge
> quality was good but the ink just didn't sit evenly on the transparency. It's
> as though it was too "watery", lacking black density, and laying in a mottely
> manner with pin holes everywhere. Also taking a long time to dry, so even if
> I could get the print settings which pumped out a lot extra ink, I reckon it
> would not dry quickly enough to make use of it and the excess ink might
> smear. My ink cartridges are a CISS system from Australian manufacturer Rihac
> so NOT using original Espon cartridges, which I had read give the best
> results.
>
> Looking at the special super black opaque inks designed for this purpose they
> seem to be mentioning that they are super fast drying, something I can see
> being important when max volumes of ink are being pumped out. This probably
> also stops the mottling effect caused by slow drying watery inks like mine.
>
> Probably wastedabout $200 so far on this PCB making venture but for some
> reason the PCB fever has me.
I've never had success with the "sandpapery" overhead projector transparencies.
The ink doesn't dry (i only tried dye ink though).
If you use the gelatine transparencies, you need the dye ink. Pigment ink is not
as watery based (more like an oil/wax), so doesn't soak into the gelatine. It
stays wet on top.