The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 1984
Filed:
Mar. 26, 1982
John W Powers, Brookline, MO (US);
Western Litho Plate & Supply Co., St. Louis, MO (US);
Abstract
Apparatus for exposing lithographic plates to light through a film, e.g. a negative, adapted for exposing one plate to light through a film or a plurality of plates to light through a film, having a first carriage with vacuum grippers for picking up a plate and a negative from each of two side-by-side plate stacks and two side-by-side negative stacks, the carriage being adapted to carry the picked-up plates and negatives to an exposure station and deposit them in registration on a platen at the exposure station for exposure of the plates to light through the negatives and through a window movable up and down at the exposure station, the window having vacuum grooves for raising the negatives, the apparatus further having a second carriage with vacuum grippers for gripping the plates exposed at the exposure station and negatives raised with the window and carrying the exposed plates and the films away from the platen and the window and out of the exposure station.