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:
Nov. 06, 1984
Filed:
Jan. 19, 1983
Masahide Iseki, Osaka, JP;
Tadanobu Nakajima, Nara, JP;
Hiroshi Kajita, Hyogo, JP;
Masuo Kawamoto, Osaka, JP;
Mita Industrial Company Ltd., Osaka, JP;
Abstract
A mass of residual charged toner is blocked by a blade member held in slidable engagement with a photosensitive member against movement therewith toward a development roller when an image is being formed on the photosensitive member. When no image is being formed thereon, the blade member is lifted off the photosensitive member to allow the mass of residual toner to move therewith toward the development roller. During this time, a bias potential having a polarity the same as that of the toner is applied to members of an electrostatic or electrographic copying machine located between the blade member and the development roller for repelling the mass of toner toward the photosensitive member against being scattered off the latter and hence smearing surrounding parts.