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:
May. 08, 1979
Filed:
Nov. 04, 1976
Juergen Meyer, Taunusstein, DE;
Heimann GmbH, , DE;
Abstract
A photosensitive matrix having a substrate with a group of row conductors, a group of column conductors extending across the row conductors to form a plurality of points of intersection with a photoconductive cell in series with a rectifier adjacent each point to inteconnect the row conductor to the column conductor characterized by the substrate being of a material which is at least approximately light impermeable in the light-sensitive spectrum of the photoconductive cells so that light projected on one cell is not conducted by the substrate to create a false signal in adjacent cells. Preferably, the substrate is a ceramic material which has been dyed black and the dyed black ceramic material consists of Al.sub.2 O.sub.3 mixed with Fe.sub.2 O.sub.3.