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:
Jul. 12, 1983
Filed:
Feb. 10, 1982
Robert Adler, Northfield, IL (US);
Extel Corporation, Northbrook, IL (US);
Abstract
A method and apparatus for character-by-character magnetic printing on plain paper, using a dot matrix format; a sheet of paper is positioned on the surface of a thin, elongated strip platen of permanent magnet material and a magnetic printhead comprising a columnar array of electromagnets scans the platen. Selective energization of the electromagnets, during each scan, magnetizes dot-size portions of the platen in dot matrix patterns defining magnetic images of the characters in a line of text; limited quantities of toner are applied to the paper generally concurrently with formation of the magnetic images to develop those images as visible characters, which are subsequently fixed on the paper surface.