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:
Jul. 19, 1977
Filed:
Jul. 28, 1975
Applicant:
Inventor:
Gualtiero Giori, Lonay, CH;
Assignee:
De La Rue Giori S.A., , CH;
Primary Examiner:
Int. Cl.
CPC ...
B41M / ; B24B / ; G03F / ;
U.S. Cl.
CPC ...
101170 ; 511645 ; 96 363 ; 101150 ; 1014011 ;
Abstract
An intaglio printing plate is prepared by coating a copperplate-engraved plate having a superficial chromium layer with an ink-accepting material such as a hardenable epoxy or acrylic resin, an enamel varnish, or a chemically or electrolytically deposited metal, and removing said layer from the non-grooved parts by treatment in a ball-graining machine. The ink-accepting material remaining in the grooves forms concave recesses suitable for wet offset printing with the precision, complexity and fineness of a copperplate design.