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. 22, 1993
Filed:
May. 02, 1991
Mitsuaki Kohyama, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An image forming apparatus for forming a toner image. The apparatus includes a photosensitive drum, a laser device for forming a latent image on the photosensitive drum, a developing device for developing the latent image with a toner agent/and for cleaning the toner agent remaining on the photosensitive drum therefrom while the latent image is developed, a transfer device for transferring the developed image on the photosensitive drum to a recording medium such as a paper sheet, a disordering and charging device for disordering the toner agent remaining on the photosensitive drum after transfer of the developed image by the transfer device so as to render the developed image unreadable or nonpatterned, and for charging the photosensitive drum at a predetermined potential while the toner agent remaining on the photosensitive drum is disordered and a bias source for supplying the disordering and charging device with a bias voltage having an AC bias voltage.