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. 08, 1988
Filed:
Jan. 29, 1987
Yukio Nagase, Tokyo, JP;
Hiroshi Satomura, Hatogaya, JP;
Hidemi Egami, Zama, JP;
Yoshihiko Hirose, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A device for electrically discharging or charging a member to be discharged or charged, includes a dielectric member, first and second electrodes embedded in the dielectric member, the first and second electrodes being supplied with an alternating voltage therebetween to cause discharge adjacent a part of a surface of the dielectric member at a predetermined discharge starting voltage, a third electrode disposed to or adjacent a part of the surface of the dielectric member at such a position as when the discharge occurs by application of the alternating voltage between the first and second electrodes, no discharge occurs between the first electrode and the third electrode or between the second electrode and the third electrode, AC source for applying an alternating voltage between the first electrode and the second electrode, DC source for applying a bias voltage between the third electrode and the member to be discharged or charged.