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:
Apr. 30, 1991
Filed:
May. 06, 1988
Tateki Oka, Osaka, JP;
Naoki Toyoshi, Osaka, JP;
Tomoaki Yokoyama, Osaka, JP;
Hiroshi Mizuno, Osaka, JP;
Hiroshi Murasaki, Osaka, JP;
Akihito Ikegawa, Osaka, JP;
Kouichi Etou, Osaka, JP;
Shuichi Nakagawa, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A developing apparatus includes a photosensitive drum positioned in confronting relation to a developing sleeve. A toner accommodating tank is provided for supplying toner to the developing sleeve. The toner accommodating tank is divided into a small chamber and a supplementary chamber which are separated from one another by a partition which permits toner to be supplied from the supplementary chamber to the small chamber but which prevents the return of toner from the small chamber to the supplementary. A movable shutter selectively permits and prevents toner from being supplied from the supplementary chamber to the small chamber in accordance with operation of the apparatus.