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:
Sep. 16, 1980
Filed:
May. 11, 1978
Applicant:
Inventors:
Assignees:
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Shinshu Seiki Kabushiki Kaisha, Nagao, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
400124 ; 101 9305 ;
Abstract
The head portion of a dot printer includes a cup-shaped yoke, an electromagnet on a coil frame, an iron core within said coil frame, said core being securely fixed to said cup-shaped yoke, a second yoke, a movable element comprising a second iron core disposed for attraction by said electromagnet and a holding member for holding said movable element for rotation around a fulcrum on said fulcrum member. The structure is such that tolerances can be held closely in mass production, thereby providing high reliability and high quality printing at low cost.