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:
Feb. 08, 2000
Filed:
Jun. 01, 1998
Mugijiroh Uno, Isehara, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developer, process cartridge and electrophotographic apparatus that includes the process cartridge and developer, which has as component parts, a main toner body, and an additive that enhances the fluidity of the main toner body. A mixing ratio of the additive to the main toner body, ensures that a contact charger, will not become contaminated, with excess additive that bypasses a cleaning device. While the additive ensures a proper fluidity of the main body of the toner, an excessive amount of additive, beyond a predetermined range, is avoided, so as to prevent the additive from contaminating the contact charger, thus enhancing the lifespan of the contact charger while maintaining image quality.