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. 24, 1992
Filed:
Sep. 06, 1991
Kazuo Fuji, Higashiosaka, JP;
Mita Industrial Co., Ltd., , JP;
Abstract
In a developer agitating method, a carrier and a toner are mixed by a spiral in an agitating passage to provide the developer. The developer is conveyed along the axis of the spiral through a high conveying speed section of the passage wherein the developer is agitated in a manner such that a part of the spiral is exposed by extending out of the developer. The developer is conveyed from the high-speed section to a low-speed section wherein the mixture rate of the toner and the carrier is detected. In a preferred embodiment, high-speed and low-speed conveying are controlled according to the pitch of the fans of the spiral. In another preferred embodiment of a developer agitating apparatus, the spiral is arranged with a restricting member which reduces the performance of developer carrying in the vicinity of the toner density sensor, but not at the toner supply mouth.