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:
Apr. 17, 1990
Filed:
Sep. 20, 1988
Tomoaki Yokoyama, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A developing device in an image forming apparatus which having a developing sleeve disposed in face-to-face relationship with a photoreceptor drum, a magnetic roller disposed inside the developing sleeve for forming a magnetic brush of developing material on an outer peripheral surface of the developing sleeve for the developing of a latent image on the photoreceptor drum, and a casing enclosing the developing sleeve and having a portion which is held in contact with the magnetic brush. Portions of the casing are formed of or with a toner adherence preventive material of a type capable of being charged to the same polarity as that of the toner particles when held in frictional contact with the material used to charge the toner particles.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile