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:
Mar. 01, 1988
Filed:
Feb. 03, 1987
Eugene L Green, Sr, Dallas, TX (US);
Wilson Engraving Company, Inc., Dallas, TX (US);
Abstract
A method for accurately positioning photopolymer color plates onto print cylinders of a rotary press is disclosed. The photopolymer plates are prepared with the aid of specially prepared color separated films and are mounted onto assigned print cylinders with the aid of index pins. Alignment accuracy is provided in part by producing each color separated film from the same camera film negative on which an image field and reference marks have been photographically transferred from mechanical artwork. Continuity of alignment accuracy is provided by center scribe reference marks utilized together with index holes which are precision located and punched, respectively, onto and through carrier sheets, masks, duplicating film and color separated negatives. Various combinations of pre-punched carrier sheets, masks, contact duplicating film, color separated negatives, and unexposed printing plates are mechanically coupled in precise alignment by pin register tabs throughout the various stages of the plate production process. In particular, superimposed sheets are coupled together and center scribe marks are maintained in alignment by pin register tabs which are received in registration in the precision punched index holes.