logo

For the Inventor, By the Inventor

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.:

US 4165393 B1

PDFFull Text
Date of Patent:
Aug. 21, 1979

Filed:

Nov. 17, 1976

Magnetic brush developing process for electrostatic images

Applicant:
Inventors:

Kohji Suzuki, Kawasaki, JP;

Manabu Mochizuki, Kawasaki, JP;

Hajime Oyama, Tokyo, JP;

Teruyuki Ohnuma, Yokohama, JP;

Assignee:

Ricoh Co., Ltd., Tokyo, JP;

Attorney:

Cooper, Dunham, Clark, Griffin & Moran

Primary Examiner:

Michael F Esposito

Assistant Examiner:

Stuart D Frenkel

Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
427 18 ; 96 / ; 252 / ;
Abstract

A magnetic developing process for use in electrophotographic or electrostatic recording techniques employs a magnetic brush formed by a developer which comprises a powder mixture of a low resistance toner and a high resistance toner, at least one of which comprises a magnetic toner. Both toners are triboelectrically charged, and the magnetic toner serves as a carrier, so that both toners are attracted to an electrostatic image to provide a developing thereof.

Find Patent Forward Citations

Suzuki, Kohji. (1979). Magnetic brush developing process for electrostatic images (U.S. Patent No. 4165393). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4165393

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…