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. 09, 1976
Filed:
May. 02, 1975
Applicant:
Inventor:
Shou Ling Hou, Barrington, IL (US);
Assignee:
Addressograph-Multigraph Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
96-15 ; 96 / ; 96-18 ; 355 / ; 346 / ;
Abstract
An ion modulator of improved sensitivity and capable of producing copies of excellent quality is provided in the form of a conductive metal screen which is coated with a photoconductor or insulator and having a supplementary electrode forming an integral part thereof. The supplementary electrode functions to provide a positive or negative bias potential resulting in a larger transmission coefficient, better gray scale, improved light sensitivity, and the ability to operate in both positive and negative modes.