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:
May. 25, 1993
Filed:
Aug. 10, 1992
Shigeki Mizuno, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An impact dot head for a printer includes a frame and a plurality of printing wires movably supported on the frame in a predetermined array. Each printing wire is bent by a different predetermined amount to be guided when moved. A plurality of armatures are respectively coupled to a respective one of the printing wires for moving the printing wires. A plurality of magnetic cores are respectively associated with each one of the armatures for selectively driving the armatures. Each of the armatures is driven by its respective magnetic core between a rest position and a printing position. A retaining member is supported on the frame and has a plurality of openings each of which is respectfully associated with one of the armatures. A plurality of coil springs each of which is supported in a respective one of the openings normally biases the armatures in the rest position. Each of the openings has a depth corresponding to the amount of bending of the printing wire associated therewith.