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:
Oct. 12, 1993
Filed:
Mar. 22, 1991
Applicant:
Inventor:
Minoru Tanaka, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335302 ; 335296 ; 148311 ; 148313 ; 420127 ;
Abstract
A magnetic material and an actuator having magnetic circuit elements incorporating the magnetic material formed of equal amounts of iron and cobalt and between about 2.1 to 5% by weight vanadium. The actuator is well suited for inclusion in an impact printer for driving the impact members of the impact printer in response to printing signals. The composition of the magnetic material of the actuator provides high energy efficiency under greatly fluctuating direct current conditions by reducing eddy currents.