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:
Feb. 05, 1991
Filed:
Sep. 15, 1989
Ashok K Agarwala, Penfield, NY (US);
Bijay S Saha, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A magnetic brush useful in an electrophotographic apparatus. An outer sleeve is made of non-magnetic metal. An inner core is disposed within the outer sleeve so as to permit relative rotation of the inner core and the outer sleeve. The inner core comprises a shaft, which is made of magnetic or non-magnetic metal, and a magnetic layer covering a generally cylindrical surface of the shaft. The magnetic layer consists essentially of a plasma-sprayed alloy of iron, a rare earth, and boron. The rare earth is selected from the group consisting of neodymium, praseodymium, and mixtures thereof. Neodymium is preferred. A bonding layer may be optionally provided, preferably an alloy of nickel, chromium, aluminum, and yttrium.