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:
Dec. 28, 1982
Filed:
Mar. 23, 1981
Applicant:
Inventors:
Toshio Kurihara, Tokorozawa, JP;
Nagao Mizutani, Tokorozawa, JP;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
101 9304 ; 400121 ;
Abstract
A cross point type dot matrix impact printer comprising a platen and a plurality of hammers arranged in the axial direction of the platen. The platen has a helix composed of a plurality of protrusions helically provided on the periphery thereof. The hammer has a hammer head which strikes each protrusion during the rotation of the platen for performing the dot matrix impact printing.