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:
Mar. 02, 1993
Filed:
Jul. 06, 1990
Abstract
A method for developing an electrostatic latent image comprises the steps of attracting a developer comprised of a magnetic toner and a magnetic carrier onto the surface of a sleeve with a magnet roll disposed therein, rotating the magnet roll and the sleeve in the direction opposite to the rotational direction of an image carrier to move the developer in the same direction as the sleeve, and supplying the developer onto the image carrier under an alternating electrical field and an alternating magnetic field to thereby conduct development. An apparatus for effecting the method comprises a casing for accommodating the developer; the magnet roll arranged to be rotated in the direction opposite to the rotational direction of image carrier; the sleeve arranged to be rotated in the same direction as the magnet roll; and an alternating electrical field applying means.