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:
Mar. 08, 1994
Filed:
Nov. 16, 1992
Akio Yano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A printing head including a plurality of impact printing wires constituting a dot matrix and a plurality of actuators for respectively and selectively driving the printing wires. Each actuator is constituted of a movable member to which the printing wire corresponding thereto is connected, a base member, a piezoelectric device mounted on the base member, and first and second leaf springs. The first leaf spring is connected between the movable member and the piezoelectric device, and the second leaf spring is connected between the movable member and the base member in parallel relationship to the first leaf spring. Each of the first and second leaf springs has a shape such that it is narrowest at the central portion thereof and is gradually widened toward the opposite ends thereof. Owing to this shape, a stress generating at the opposite ends of each leaf spring can be reduced to thereby prevent breakage of each leaf spring.