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:
Dec. 30, 1986
Filed:
Oct. 15, 1984
Applicant:
Inventor:
Mamoru Shimono, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ;
Abstract
A developing apparatus is provided with a developing roller disposed in a casing and carrying a toner on the surface thereof, and a detecting mechanism adapted to detect the amount of the toner in the casing and to deliver an empty signal when the casing is emptied of the toner. The detecting mechanism includes a lever rockable within a vertical plane in the casing and has an elongate body, and a detecting section which is wider than the elongate body and disposed at the distal end to the elongate body to engage the surface of the toner stored in the casing. The lever is adapted to hang by gravity in accordance with the amount of the toner.