Photo inksets have UV blockers for the light cyan and light magenta, because they tend to fade quickly without them.
http://tech.dir.groups.yahoo.com/group/Homebrew_PCBs/message/22732Yellow also reportedly works well. You will need to test your particular inkset.
http://tech.dir.groups.yahoo.com/group/Homebrew_PCBs/message/22737Makers of screens for screenprinting use standard inks on vellum all the time.
Steve Greenfield AE7HD
--- In Homebrew_PCBs@yahoogroups.com, "Hikmet" wrote:
>
> "UV blocking ink" is that a special ink or default inks will block uv's.
>
> I have epson l800 and it has dye based ink.
>
> --- In Homebrew_PCBs@yahoogroups.com, "cunningfellow" wrote:
> >
> > > Steve Greenfield wrote:
> > >
> > > It is easier and cheaper to get high resolution
> > > inkjet than to get high resolution Laser.
> >
> > >> r.d. terramir wrote:
> > >> inkjets don't do a very good job on transparencies
> > >> and the printout tend to be too opaque.
> >
> > >>>
> >
> > I agree with Steve on this.
> >
> > a $50 inkjet can do a fine job on proper trannies
> > (if it has UV blocking ink)
> >
> > a $2000 laser printer can just compete on trace/space
> > but is not as good on large fills
> >
> > It takes a medium car priced laser printer to beat
> > an inkjet for making phototools. Then only some of
> > them. We have had expensive printers that have even
> > failed to do as good as job as a $500 printer.
> >
>