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:
Jan. 26, 1993
Filed:
Nov. 29, 1991
Shin Hasegawa, Kawasaki, JP;
Hajime Oyama, Ichikawa, JP;
Eiichi Katoh, Tokyo, JP;
Masao Moriya, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner end detecting method for an electrophotographic copier which allows the copier to operate even when a toner end condition is detected by accident or when a developing device included in the copier and being used is replaced with another storing a toner of the same color while a toner end condition is not reached. When the power source of the copier is turned off and then on or when the developing device is set on the copier, the method executes a recovery procedure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile