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:
Jul. 18, 2017
Filed:
May. 22, 2015
Kazuya Saitoh, Kanagawa, JP;
Hiroomi Tamura, Kanagawa, JP;
Tetsuto Ueda, Kanagawa, JP;
Sho Sekiguchi, Kanagawa, JP;
Kazuya Saitoh, Kanagawa, JP;
Hiroomi Tamura, Kanagawa, JP;
Tetsuto Ueda, Kanagawa, JP;
Sho Sekiguchi, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A developing device includes a casing containing a two-component developer including toner and carrier, a developer bearer to transfer the developer on the developer bearer to a developing area, a toner density sensor to output an output value based on toner density of the developer, a toner density detection module to detect the toner density based on the output value of the toner density sensor and output characteristics relating the toner density and the output value, an acquisition module to acquire the output characteristics based on the output value of the toner density sensor relating a new developer and a predetermined toner density of the new developer, a bulk density fluctuation estimating module to estimate bulk density fluctuation for bulk density of the new developer, and a correction module to correct the output value based on the estimated bulk density fluctuation.