Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Ben H. Lanmon" <bhleavi@y...>
wrote:

...
> I use to use the Black ink with somewhat good results, but not long 
> ago learned from someone on one of the lists don't remember if it 
> was this one that Yellow ink blocks UV, he recommends use the photo 
> inks using Yellow and Green together think it was.  Myself I use a 
> HP CP 1700 printer, print the Transparency using the Yellow ink 
> only, has always worked Great for me so far.  AS I recall from his 
> test, was that Cannon printers where the best machines to use, using 
> Photo Ink.

I think it was me, here, passing it on from the Screenprinters list.
Someone did some thinking about the fact that Canon had to make the
lighter photo shades of ink UV fade resistant, that maybe it would
block UV better than black. He did some experiments and found it to be
true.

I think it was Photo Cyan and Yellow that were the most UV dense, so
he printed a yellowish light green. If you print dark green, the
printer will use regular Cyan.

Steve Greenfield