Lithographic dual light source apparatus
AssigneeDual Light Inc.
InventorTerry L. Smith
Life of this patent
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Abstract
An apparatus is disclosed for alternatively positioning a quartz or pinpoint light above a vacuum printing frame in a lithographic process. Either a quartz or a pinpoint light is required to produce fine line contacts, duplicates and reverses which are subsequently arranged in the desired orientation and transferred onto a printing plate for offset printing. The apparatus is located over a vacuum printing frame, or similar device, and has both the quartz light and pinpoint light attached to a movable housing. The housing is movable along two rails so as to accurately position either of the lights in its proper position over the printing frame. Movement of the housing is initiated by the operator and ceases when the housing contacts a limit switch.
Claims15
An apparatus for moving a light source into a desired position comprising:
- (a) mounting means for mounting at least two light sources said light sources including at least one pinpoint light and at least one quartz light;
- and,
- (b) means to move said mounting means into first and second positions such that in a first position one of said light sources is in a desired position, and in a second position, another of said light sources is in a desired position.
Apparatus for positioning either a quartz light or a pinpoint light in proper position over a vacuum frame comprising:
- (a) a pair of support rails mounted in parallel above said vacuum frame;
- (b) a housing slidably attached to said pair of rails, said housing having said quartz light and said pinpoint light mounted therein;
- (c) means to move said housing between a first position in which the quartz light is in operative position over the vacuum frame, and a second position in which the pinpoint light is in operative position over the vacuum frame;
- and
- (d) remote control means to control the movement of the housing and the operation of the quartz and pinpoint lights.
Dependencies are inferred from the claim text.