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. 18, 1993
Filed:
Mar. 13, 1992
Hiroyuki Maesawa, Iruma, JP;
Kazumasa Mizoguchi, Iruma, JP;
Ye Data Inc., Tokyo, JP;
Abstract
An impact dot line printer has a hammer bank equipped with a plurality of printing heads along printing lines mounted on the upper side of a belt extended between a pair of rotational drums. A counter balancer is mounted on the lower side thereof, the hammer bank and the counter balancer being reciprocated in the directions reverse to each other. Since repelling springs are provided on both left and right sides in order to reduce thrust required for deceleration at the end of shuttling operation of the hammer bank and the counter balancer, vibrations or noises caused by the collisions with the spring might occur. But by the present invention, rotors are provided with eccentric weights which act so as to offset force couple at the time of the collisions with the repelling springs, whereby the shock force caused by the collisions is sharply decreased to suppress the vibrations or noises.