Re: question of gum bichromate spectral sensitivity
Hi Keith, If your contact printing frame or vacuum frame has ordinary glass, it will cut most of UVB already. (>90% to be conservative... It's more like 98% according to many web sources!) So, what you experience should be more about the difference between the output of the lamps in regions other than UVB, both in terms of spectral distribution and power. Are all metal-halide bulbs the same? Regards, Loris. 11 Haziran 2009, Perşembe, 7:32 pm tarihinde, Keith Gerling yazmış: > My Violux light source is much slower than my NuArc, although they both > use > metal-halide bulbs. The Violux has safety glass that filters out light > below 320nm. Should I get faster results without this glass? > > Thanks > > Keith >
|