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:
Dec. 16, 1986
Filed:
Nov. 26, 1984
Moriyoshi Tsukano, Kawasaki, JP;
Hisao Ishizu, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developer supply system for a dry process electrophotographic copier supplies a single component or dual component type developer to a developing unit. After a used developer has been discharged from the developing unit, a fresh charge of carrier is supplied to the developing unit and, then, a fresh charge of toner to be mixed with the fresh carrier. A circuit is provided for controlling such a sequence. Independent cylindrical cartridges are allocated to the toner of the single composition developer and to the toner and carrier of the dual composition developer. Each of the cartridges is received in a cylindrical cartridge. The cartridge casing is mounted in a hopper casing associated with the developing unit and is driven for rotation therein.