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. 25, 1988
Filed:
Mar. 30, 1987
Tomoyuki Asada, Yokohama, JP;
Kiyoshi Tomimori, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A device for transferring charged developing particles onto an electrostatic latent image, comprising a reservoir for holding a quantity of developing particles, a multilayered developing roller rotatably exposed to the quantity of developing particles, including a surface layer for frictionally charging the developing particles with a specified polarity and for attracting the charged developing particles for forming a coating of charged developing particles on the surface layer, and an image carrier for supporting the electrostatic latent image in proximity to the developing roller, the latent image having a polarity opposite to the specified polarity for attracting the charged developing particles from the coating onto the latent image.