Re: update: screw-in BLB light-box

Thanks, Judy. There are certainly lots of angles to consider here (excuse the pun - smiles). Cheers! JT

--
Judy Rowe Taylor
Mukilteo, WA
Art is a voice of the heart, a song of the soul.
www.enduringibis.com
jude.taylor@comcast.net or judyrowetaylor@enduringibis.com
> 
> On Mon, 1 Aug 2005, jude.taylor@comcast.net wrote:
> 
> > I did not use any reflectors, but that is a possibility that might help.  The 
> top of the box INSIDE above the bulbs is all white and should, as far as I can 
> figure, reflect rather than absorb the UV.  There are, however, several inches 
> of space from the tip of the coil to the base  of the ceramic sockets (top of 
> box), and the sides of the box were not painted white or lined with reflective 
> material.
> >
> > Hummmh!  I wonder if silver / white "tea chest" paper lining would work?
> 
> Judy, I have no idea if my experience with reflectors would apply to your 
> experience with reflectors, but --FWIW -- I found that all the ones I 
> tried (with tube flourescents) diffused the light either some or a lot, 
> hence costing sharpness, some or a lot. Crumpled aluminum foil on the base 
> was the worst, but even just plain white cost sharpness. I don't know why 
> exactly. But I don't need to know why. I observed it -- (easiest to judge 
> how much with a 21-step of course).
> 
> "Tea chest" paper might be medium bad -- not likely to lie *perfectly* 
> flat, also with some pattern or mini-grooves of reflection, but not as bad 
> as crumpled foil.
> 
> That, BTW, may not happen in your setup as much as it did in mine if 
> you've got serious-level vacuum frame -- but that's only a guess. It could 
> be irrespective of print sandwiching techniques, but in any event needs to 
> be watched for.
> 
> Judy