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:
Nov. 02, 1976
Filed:
Feb. 18, 1975
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 96 / ; 3401 / ; 355-4 ; 355 14 ;
Abstract
A sintered body obtained by sintering a mixture of lead monoxide, titanium dioxide, zirconium dioxide and lanthanum oxide under a certain condition, is used as transfer master. The transfer master is subjected to electric polarization in accordance with the original picture to be copied so that a plurality of electrophotographic copies are swiftly produced.