G - Physics
03
B
95/4
G03B 27/20 (2006.01) G03B 27/04 (2006.01)
Patent
CA 1215570
Abstract of the Disclosure Disclosed is an exposure device which is mounted on a base and in- cludes two exposure lamp arrangements with shutters, as well as a movable mounting support and a stationary mounting support. The movable mounting support is adapted for being displaced between side walls by means of two compressed air cylinders. Positioning elements, which are swivelled upward, have end faces which contact stop faces at the back of a frame of the movable mounting support, when the positioning elements adopt a horizontal position. A motor is provided for driving drive rollers. Positioning pins which are engaged by springs are extended by the action of compressed air cylinders, in order to adjust masters provided with register perforations, on glass plates of the frames and to accommodate a plate which is to be exposed. A vacuum pump is connected with suction means, which are arranged in the frames. Thus the present invention provides an exposure device which renders it possible to obtain perfect exposure of two photosensitively coated sides of a vertically arranged plate, while preventing air pockets from forming between the two sides of the plate and the masters pressed against them, and which allows uncom- plicated changing of masters.
441073
Schmitt Klaus
Schoen Klaus-Peter
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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