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. 07, 2017
Filed:
Nov. 03, 2014
Applicants:
Akinori Yamaguchi, Osaka, JP;
Naoki Nakatake, Hyogo, JP;
Inventors:
Akinori Yamaguchi, Osaka, JP;
Naoki Nakatake, Hyogo, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0831 (2013.01); G03G 15/0889 (2013.01); G03G 15/086 (2013.01);
Abstract
A developing device includes: a toner detection unit that detects whether there is toner that is stored; a stirring unit that stirs toner in a toner container; a calculation unit that calculates an output duty by comparing an output voltage of the toner detection unit representing whether there is toner after the stirring, with a predetermined voltage value; and a remaining amount detection unit that detects an amount of remaining toner at the output duty from a correspondence relationship between the output duty and an amount of remaining toner that is previously set.