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:
Nov. 02, 1999
Filed:
Jun. 03, 1997
Applicant:
Inventors:
Edward P Furlani, Lancaster, NY (US);
Thomas M Stephany, Churchville, NY (US);
William Mey, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; B41J / ; G01D / ;
U.S. Cl.
CPC ...
346 745 ; 347169 ;
Abstract
A magnetic brush development roller assembly for an electrographic printer includes a cylindrical multipole magnet mounted for rotation about a cylindrical axis; and a conductive non-magnetic stationary shell surrounding the multipole magnet. The shell defines an axial slot for receiving an imaging head, and has a region of reduced conductance extending substantially around the circumference of the shell, whereby eddy currents generated by rotation of the magnet within the shell and hence resistive heating and drag on the magnet are reduced.