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. 05, 1982
Filed:
Aug. 01, 1979
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A method of electrophotography in which an electrostatic latent image is formed on the surface of a material layer and a non-magnetic cylinder is provided to confront the surface of said material layer. A permanent magnet roll made up of a plurality of symmetrically arranged magnetic poles extends axially in said cylinder. A magnetic brush is formed by attracting a semiconducting or insulating magnetic toner onto the cylinder with the aid of a magnetic attraction force of the permanent magnet roll. The cylinder and permanent magnet roll are moved relative to each other to permit the magnetic brush to slide along the surface of the material layer thereby to allow the magnetic toner to adhere at predetermined position on the surface of said material layer, and a toner image is transferred onto a transferring member and is then subjected to fixing. The cylinder and the permanent magnet roll are rotated in the same direction so that the magnetic toner is moved in the same direction as that of said material layer at a speed less than 100 mm/sec irrespective of the speed of movement of the surface of said material layer at a development section.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile