Typewriting machines – Annular typewriter
Patent
1982-02-10
1983-07-12
Sewell, Paul T.
Typewriting machines
Annular typewriter
101DIG5, 101426, 346 742, B41J 312, B41J 2716, B41J 316
Patent
active
043927548
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.
REFERENCES:
patent: 2841461 (1958-07-01), Gleason
patent: 2985135 (1961-05-01), Hickerson
patent: 3142840 (1964-07-01), Smith et al.
patent: 3254626 (1966-06-01), Uemura
patent: 3593832 (1971-07-01), Damouth et al.
patent: 3683382 (1972-08-01), Ballinger
patent: 3684075 (1972-08-01), Staller et al.
patent: 3735416 (1973-05-01), Ott et al.
patent: 3825936 (1974-07-01), Ott et al.
patent: 3890623 (1975-06-01), Schmid et al.
patent: 4072957 (1978-02-01), Kokaji et al.
Extel Corporation
Sewell Paul T.
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