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:
Dec. 20, 1994
Filed:
Feb. 09, 1993
Applicant:
Inventor:
Takashi Shirakawa, Takizawa, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61J / ;
U.S. Cl.
CPC ...
346 / ; 4289088 ;
Abstract
A wear resistance layer is formed on a surface of a portion of a sliding contact part adapted to contact with a recording medium and slide relative thereto. The wear resistance layer is formed of a material mainly composed of chromium oxide and at least one of conductive nitride and conductive carbide. Accordingly, the wear resistance of the sliding contact part can be greatly improved to thereby extend the service life.