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:
Jun. 09, 1998
Filed:
Oct. 01, 1996
Syuichiro Ogata, Tokyo, JP;
Yoshitatsu Okiyama, Tokyo, JP;
Kazuyoshi Yoshida, Tokyo, JP;
Toru Ishihara, Tokyo, JP;
Kuniharu Hayashi, Tokyo, JP;
Hiroyuki Yajima, Tokyo, JP;
Mikio Yamamoto, Tokyo, JP;
Takashi Itaya, Tokyo, JP;
Masanori Maekawa, Tokyo, JP;
Kazuhiko Nagaoka, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
A method of forming an electrostatic latent image includes printing operation and toner recovering operation. the printing operation includes charging, forming an electrostatic latent image, developing, and transferring operations. The toner recovering operation includes the step of charging the photosensitive drum in timed relation to the rotation of the photosensitive drum after printing operation so that reversely charged toner deposited on the charging roller migrates from the charging roller to the photosensitive drum. The toner migrated from the charging roller to the photosensitive drum is recovered into a developer. An apparatus for forming an image includes a charging roller, photosensitive drum, developing roller, and transfer roller. The apparatus further includes a reversely-charged-toner recovering device which causes the photosensitive drum to be charged in timed relation to the rotation of the photosensitive drum after printing operation so that the reversely charged toner deposited on the charging roller migrates to the photosensitive drum. The developer recovers the toner which has migrated to the photosensitive drum from the charging roller.