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:
Nov. 26, 1991
Filed:
May. 30, 1990
Yukio Nishio, Tama, JP;
Kazunori Hirose, Hiratsuka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention is directed to a developing device using a one-component developer composed of colored fine sythetic resin toner particles. The device includes a vessel for holding the developer and a developing roller rotatably provided within the vessel, a portion thereof being exposed therefrom and resiliently pressed against a surface of an photosensitive drum. The toner particles are held by the surface of the developing roller to form a developer layer therearound, and are carried to the surface of the image formation drum for development of an electrostatic latent image formed thereon. The developing device further incorporates a blade member provided within the vessel and resiliently engaged with the developing roller for regulating a thickness of the developer layer formed therearound. The pressures exerted on the developing roller by the phososensitive drum and the blade member, respectively, can be at least partially released.