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. 15, 1985
Filed:
Aug. 27, 1984
Fuji Xerox Co., Ltd., , JP;
Abstract
This invention provides a magnetic printer which permits substantially thorough removal of the residual developing agent from the magnetic latent image carrier or the photoreceptor's surface after the stage of image transfer even when the developing agent in use has high specific resistance and excels in both transfer property and developing property. The magnetic printer according to this invention is adapted to effect removal of any developing agent remaining on the magnetic latent image carrier after transfer of a visible image of developing agent by conferring electric charge upon the residual developing agent and subsequently forcing thorough departure of the residual developing agent from the magnetic latent image carrier by virtue of electrostatic force, wherein a source of electric pulses is used to generate the aforementioned electro-static force in such a manner that the electric charges imparted in advance to the residual developing agent are prevented from being reduced, totally eliminated or even reversed the polarity thereof by the DC electric field produced by the DC electric field produced between a bias roll and an opposite roll.