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:
Feb. 02, 1988
Filed:
Nov. 09, 1983
Applicant:
Inventors:
Arthur C Lutus, San Jose, CA (US);
Victor B Van Blerk, San Jose, CA (US);
Assignees:
Ricoh Company, Ltd., Tokyo, JP;
Ricoh Systems, Inc., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 15 ; 355 77 ; 430125 ;
Abstract
In an electrophotographic copying system designed according to the present invention, a transparent conducting plastic layer is placed between the drum surface and the red/green electroluminescent panel. This layer is either grounded or is biased to repel the electrically charged toner.