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:
Sep. 03, 1991
Filed:
Dec. 01, 1989
Richard A Weitzel, Hilton, NY (US);
Larry W Speer, Hilton, NY (US);
Susan P Westbrook, Fairport, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A magnetic brush development apparatus for applying developer material to a latent electrostatic image wherein the mixing of pigmented marking particles in the developer material is enhanced. The development apparatus includes a housing having a portion defining a sump adapted to contain a supply of developer material to which marking particles may be selectively added. A magnetic brush is located substantially within the housing in spaced relation to the sump portion for applying developer material to the latent image. A feed mechanism, located within the housing between the sump portion and the magnetic brush transports developer material from the sump to the magnetic brush. An agitating and transporting mechanism, located in said sump portion, agitates developer material and transports developer material to the feed mechanism. In order to enhance the mixing of developer material, flow of developer material is directed from the wall of the housing adjacent to the sump portion back into the agitating and transport mechanism.