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:
Oct. 22, 1991
Filed:
Dec. 26, 1990
Masashi Yamamoto, Takatsuki, JP;
Toshimitsu Fujiwara, Kobe, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A monocomponent developing device for use in the electrophotographic image forming apparatus, which comprises a developing roller rotatably supported so as to confront a rotatably supported photoreceptor, a toner supply means for supplying toner onto the developing roller, a regulating member held in contact with a surface of the developing roller and operable to triboelectrically charge the toner, supplied onto the surface of the photoreceptor, while regulating the amount of the toner, and a coating film formed on at least a portion of a surface of the regulating member which is held in contact with the developing roller. The coating film has the same polarity in triboelectric series as that of the toner and is abradable after repetition of developing with a surface of the regulating member consequently exposed.