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. 17, 1989
Filed:
Jul. 05, 1988
Akinori Kimura, Kanagawa, JP;
Akira Yoda, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A developing apparatus wherein a developer is supplied to an exposed electrophotographic film to develop an image formed on the film has a developing section provided with an electrode which is disposed in opposing relation to the film. A bias voltage of the same polarity as that of the film which is electrically charged is applied to the electrode to prevent fogging of the image. The bias voltage is lowered or made opposite in polarity for a relatively short period of time, thereby momentarily improving the adhesion of the developer to the film, and thus allowing the developer to reliably adhere even to a relatively low density portion of the image.