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:
Jan. 09, 1996
Filed:
Jul. 06, 1994
Kazuo Otsuka, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In an electrophotographic image forming apparatus having an image carrier for forming an electrostatic latent image thereon, a charging device has a charging member facing the image carrier and spaced apart therefrom by a predetermined gap, and a power source for applying a predetermined voltage to the charging member. The device charges the image carrier without contacting it and is, therefore, advantageous over a conventional contact type charging device in respect of resistivity to smears, reliability and uniform charging. Moreover, since the charging device is operable with a voltage lower than a voltage conventionally applied to a corona charger, it causes a minimum of ozone to be produced while enhancing safety operation.