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:
Aug. 26, 1986
Filed:
Sep. 24, 1984
Takeshi Saito, Ichikawa, JP;
Ricoh Company, Ltd., , JP;
Abstract
A removable developing unit of an electrostatic recording apparatus, particularly a multi-color copying apparatus, has a casing with an aperture, at one side to allow contact of a developing sleeve with a photoconductive member when the developing unit is mounted in the copying apparatus. A cover and an automatic closing mechanism is provided so that the aperture is covered when the developing unit is removed from the copying apparatus. The casing includes a toner hopper to which a replaceable toner cartridge is attached. The correct color of replacement toner for the developing unit is ensured by removable tabs or openings on the toner hopper which matches those of the correct color toner cartridge.