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, 1996
Filed:
Jul. 06, 1995
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
An image forming method includes the steps of charging a surface of a movable image-bearing member uniformly by using a roller charging means, forming an electrostatic latent image on the image-bearing member by carrying out an image exposure, delivering a magnetic developer which is attracted onto a surface of a sleeveless permanent magnetic member to a developing region located opposite to the electrostatic latent image formed on the image-bearing member, the sleeveless permanent magnetic member being formed with a plurality of magnetic poles provided on its surface and having a cylinder shape, developing the electrostatic latent image using the magnetic developer comprising a toner and magnetic carriers, the magnetic carriers having a volume resistivity of 10.sup.10 .OMEGA..cm or more, and transferring a toner image onto a transfer sheet by using a roller transfer means.