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:
Jan. 16, 2001
Filed:
Jan. 06, 1994
Hideki Kamaji, Kawasaki, JP;
Masae Ikeda, Kawasaki, JP;
Kazunori Hirose, Kawasaki, JP;
Hiroshi Nou, Kawasaki, JP;
Masahiro Wanou, Kawasaki, JP;
Teturou Nakashima, Kawasaki, JP;
Masatoshi Kimura, Kawasaki, JP;
Yukio Nishio, Kurume, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An electrophotographic recording apparatus includes a photosensitive drum on which an electrostatic latent image can be written, a developing device for developing the latent image of a charged visible image with a one-component developer, and a transferring device for electrostatically transferring the charged visible image from the drum to a sheet or paper. The developing device has a conductive foam rubber roller for entraining the developer to form a developer layer therearound and for bringing the layer to the drum for the development of the latent image, a conductive blade resiliently engaged with the foam rubber roller for uniformly regulating a thickness of the developer, and an electric source for applying electric energy to the blade to electrically charge the developer layer by a charge-injection effect. The transferring device has a conductive foam rubber transfer roller in contact with the drum, and an electric source for applying energy to the transfer roller to give a paper an electric charge having a polarity opposite to that of the charged visible image during a passage of a recording medium through a nip between the drum and the transfer roller.