Homebrew PCBs

I have an Epson Stylus R320 that I want to use with transparencies for PCB artwork using photosensitized FR4 and UV exposure. I use a row of 20 UV LED (395nm) that I mounted on an old HP scanner so I can control the exposure to UV.

How is it possible to increase the resolution of the print?

Thanks,
Jean-Paul

--- In Homebrew_PCBs@yahoogroups.com, DJ Delorie <dj@...> wrote:
>
> I have an Epson R280 (Claria inks) and I've used Jetstar's standard and 
> premium films, as well as SilkJet films, all without problem.  I even 
> wrote a program to print using 100% ink coverage at 2880 DPI and these 
> films work pretty much flawlessly (important to keep the head clean though).
> 
> In the USA, I got mine from vpcinc.com
>