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. 09, 1996
Filed:
Nov. 07, 1994
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An electrostatic latent image developer containing a carrier, a toner, and an electric field adjusting agent. The electric field adjusting agent is formed as particles having an average particle size smaller than that of the carrier, and contains a magnetic powder in a specific amount less than that of a magnetic powder contained in the carrier and greater than that of a magnetic powder contained in the toner. The magnetic powder may be deposited on the surface of each particle of the electric field adjusting agent to form a conductive layer capable of smoothly taking or imparting charges away from or to the toner. Accordingly, an electric field formed in a gap between a developing sleeve and a photosensitive member can be intensified to thereby prevent an edge effect and enhance a permittivity in this gap. Accordingly, the electrostatic latent image formed on the photosensitive member can be faithfully developed.