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. 29, 1994
Filed:
Dec. 13, 1991
Roland H Thoms, Cortland, NY (US);
BMC Industries, Inc., Minneapolis, MN (US);
Abstract
A photo printing plate having an upper air evacuation channel and a lower air evacuation channel with the lower air evacuation channel formed in a emulsion layer and the upper air evacuation channels formed by spacers located partially on top of the opaque pattern that projects outward from the emulsion layer and partially on top of the nonopaque emulsion layer adjacent to the opaque pattern to provide an air evacuation channel formed by the evacuation channels in the emulsion surface and the spacers so that the air can be rapidly evacuated between the photo printing plate and a layer of etchant resist while maintaining the layer of etchant resist less than 10 microns from the top surface of the photo printing plate.