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. 06, 2001
Filed:
May. 25, 2000
Toshiaki Miyashiro, Shizuoka-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developing device mounted on a main body of an electrophotographic image forming apparatus and adapted to develop an electrostatic latent image formed on an electrophotographic photosensitive member, includes: a developer container including a developing portion with a developer bearing member for containing a developer therein and feeding the developer to the electrophotographic photosensitive member and a hopper for containing the developer therein and feeding the developer to the developing portion in order to develop the electrostatic latent image formed on the electrophotographic photosensitive member; and a developer residual amount detecting electrode pair having first and second electrodes disposed to interpose the developing portion and the hopper portion therebetween in order to detect the residual amount of developer by the main body of the electrophotographic image forming apparatus; wherein the first electrode of the developer residual amount detecting electrode pair comprises the developer bearing member, and the second electrode is fitted on an outer wall of the developer container.