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:
Sep. 06, 2011
Filed:
May. 02, 2008
Keiko Matsumoto, Yokohama, JP;
Emi Kita, Tokyo, JP;
Mugijirou Uno, Isehara, JP;
Satoru Miyamoto, Ebina, JP;
Junichi Terai, Isehara, JP;
Keiko Matsumoto, Yokohama, JP;
Emi Kita, Tokyo, JP;
Mugijirou Uno, Isehara, JP;
Satoru Miyamoto, Ebina, JP;
Junichi Terai, Isehara, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing agent storage device for storing a refill developing agent includes toner particles, carrier particles, an inner layer of the developing agent storage device. The toner particles and carrier particles compose the refill developing agent. The inner layer is provided as a wall contacting the refill developing agent. An electrostatic chargeability level of the toner particles, the carrier particles, and the inner layer is set in an order of toner, inner layer, and carrier from any one of a negative charge side and a positive charge side.