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:
Aug. 16, 1983
Filed:
Mar. 23, 1982
Fuminobu Nishimura, Yokohama, JP;
Mitsuaki Kohyama, Higashi-kurume, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A copying apparatus comprises a photosensitive body and a developing device. The developing device includes a first storage chamber for storing a first red toner, a second storage chamber adjacent to the first storage chamber for storing a second black toner, and a developing roller having an outer peripheral surface consisting of a first portion facing the photosensitive body, a second portion located inside the first storage chamber, and a third portion located inside the second storage chamber, and rotatable clockwise and counterclockwise. The first red toner is supplied from the first storage chamber to the photosensitive body when the developing roller rotates clockwise, and the second black toner is supplied from the second storage chamber to the photosensitive body when the developing roller rotates counterclockwise.