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:
Jun. 05, 1990
Filed:
Jul. 15, 1988
Applicant:
Inventors:
Hisanori Yagi, Ibaraki, JP;
Kousuke Hamada, Amagasaki, JP;
Isamu Nakano, Takatsuki, JP;
Yoshihiro Nishimura, Amagasaki, JP;
Assignee:
Kanzaki Paper Manufacturing Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; G03G / ;
U.S. Cl.
CPC ...
428325 ; 428331 ; 428336 ; 428511 ; 428512 ; 428513 ; 427121 ; 430 48 ;
Abstract
Disclosed is an electrostatic recording medium comprising an electroconductive support and a dielectric layer formed on the electroconductive support and containing an insulating resin and a pigment, characterized in that the pigment comprises kaolin having a quartz content of not more than 2% by weight and that the dielectric layer has, on the surface thereof, projections based on the pigment and having an equivalent diameter of 5-15 um as spacers.