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morse contact printers
In article t,
Richard Knoppow wrote: "Thor Lancelot Simon" wrote in message ... In article et, Richard Knoppow wrote: If its as slow as contact printing paper it should work like a charm. The lamps are arranged with separate switches for each lamp for dodging but the lamps are also arranged with additional switches that turn them on or off in concentric rings. The 10x10 printer has 39 low wattage GE UV lamps. These are rather nice for platinum printing. I am surprized they are intense enough. Platinum printing usually requires a very strong source such as a plate burner or not too strong daylight, similar to printing out paper. The UV sources in the Morse printer are about 4 watts each. They were designed for short printing time on paper like Azo, not for printing out papers. Have you actually used a Morse printer for Platinum? I took a printing class with George Tice in the early 1990s, and on the last day he brought his platinum printing setup in and demonstrated it. From the description of the arrangement of light sources in the 10x10 Morse I am pretty much certain that that's what he used (his printer was 10x10 as well). I don't know whether he modified the light source somehow for more brightness -- were these bulbs available in higher wattages? The printer was very convenient and certainly nicer than other light sources for platinum printing that I've used since. Platinum emulsion is very UV sensitive. Perhaps that makes the difference. -- Thor Lancelot Simon "We cannot usually in social life pursue a single value or a single moral aim, untroubled by the need to compromise with others." - H.L.A. Hart |
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