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:
Oct. 17, 1989
Filed:
Sep. 01, 1987
Hiroyuki Idenawa, Hiratsuka, JP;
Hideaki Mochimaru, Yokohama, JP;
Hajime Kanda, Tokyo, JP;
Nobuhiro Makita, Tokyo, JP;
Yoshiaki Tanaka, Kawasaki, JP;
Takahiro Yagisita, Yokohama, JP;
Takanori Yamaki, Tokyo, JP;
Takeshi Motohashi, Yokohama, JP;
Masayoshi Miyamoto, Yokohama, JP;
Hisao Ishizu, Tokyo, JP;
Yasuhiro Sagawa, Yamato, JP;
Tadaaki Kanno, Yokosuka, JP;
Tomoo Sankoda, Yamato, JP;
Hiroshi Hosokawa, Yokohama, JP;
Hideo Aoki, Yokohama, JP;
Takami Suzuki, Yokohama, JP;
Hiromi Takada, Yokohama, JP;
Toshio Shimazaki, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A laser printer or like electrostatic recording apparatus of the type developing an electrostatic latent image provided on a photoconductive drum by toner which is conveyed by a developing roller. Various devices of the apparatus including the photoconductive drum and developing roller are separated into an upper and a lower unit which are openable away from each other. A photoconductive drum assembly including the photoconductive element and a developing assembly including the developing roller are individually detachable from a body of the apparatus. Various measures are taken to enhance stable and safe operation, miniaturization, easy maintenance, operability, service life, and image quality.