Adam Seychell wrote:
> Hello,
> I was interested in testing performance of various inkjet
> printers and transparency print media...
...
> Now there is the question can a simple back-light images show how
> well it can work as a photomask in UV photoresist exposure?
Maybe you could print a black area a few cm square then
detect how much uv gets thru with a uv photodiode.
http://www.google.com.au/search?q=uv+photodiode&ie=UTF-8&oe=UTF-8&hl=en&btnG=Google+Search&meta=Some washing powder has a phosphor in it that converts
uv to visible, making white look "whiter".
A photomultiplier tube would be sensitive and has a sharp
cut-off for longer wavelengths.