Photocopying – Contact printing – Fluid pressure retention of carrier and receiver in exposure...
Patent
1983-03-16
1984-08-07
Hayes, Monroe H.
Photocopying
Contact printing
Fluid pressure retention of carrier and receiver in exposure...
355 70, G03B 2720
Patent
active
044640471
ABSTRACT:
In a vacuum printer for the graphic arts having a housing, blanket and glass frames upon the housing adapted to receive a negative and a light sensitive sheet, and an upright mounted upon and projecting above the housing, an overhead multiple lamp mount console is adjustably spaced from the glass frame and comprises an upright carriage guidably mounted upon the upright. A top frame overlies the glass frame and is secured to the carriage assembly. First and second lamp assemblies of different wattages span and are movably mounted upon a pair of tracks on the top frame adjacent their respective ends. The lamp assemblies are adapted for alternate movements upon the tracks so as to centrally overlie the glass frame, adapted for selective light exposure of the sensitized sheet. A third lamp assembly of a different wattage spans and is movably mounted upon additional tracks underlying and secured to a second lamp assembly adapted for movement thereon to centrally overlie the glass frame.
REFERENCES:
patent: 2270578 (1942-01-01), Campbell
patent: 2287228 (1942-06-01), Campbell
patent: 2376416 (1945-05-01), Campbell
patent: 2494282 (1950-01-01), Campbell
patent: 3106145 (1963-10-01), Hutchins
Maher Robert J.
Tooson Ronald
Douthitt Corporation
Hayes Monroe H.
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