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:
Feb. 12, 1980
Filed:
Feb. 27, 1978
Hirotoshi Matsui, Shiki, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A plurality of magnetic dot elements are provided, each of which comprises a cylindrical magnet and a conical impact member fixed to the cylindrical magnet. The magnetic dot elements are rotatable and can shift their positions along their axes. A magnetic field control is provided for controlling the orientation of each of the magnetic dot elements in accordance with print information so that the conical impact member of a selected magnetic dot element faces a print receiving member. A depression plate is provided for depressing the magnetic dot elements toward the print receiving member in such a manner that the conical impact member of the selected magnetic dot element comes into contact with the print receiving member, whereby a desired character is printed on the print receiving member in a dot matrix fashion.