Recorders – Magnetographic – Magnetographic head
Patent
1987-04-30
1988-04-19
Evans, Arthur G.
Recorders
Magnetographic
Magnetographic head
346 742, G01D 1510
Patent
active
047393424
ABSTRACT:
A magnetographic printing head comprises an array of crossed elongated bar-shaped print elements, each of which is individually magnetizable by electrical conductors wound about respective ones of the print elements. The print elements are arranged in two parallel arrays which are spaced apart from each other to define a passage through which a magnetic medium is to be passed for the imprinting of marks thereon. A mark can be imprinted at each cross point of the crossed arrays upon application of sufficient magnetizing current to each of the print elements at the cross point. The print elements are specifically shaped to provide for concentration of magnetic fields at the cross points in two dimensions to accomplish high resolution printing. The concentration of the fields is accomplished in one embodiment of the invention by the use of a knife-edge configuration to opposed facing surfaces of the elements of the opposed arrays, and in a second embodiment by a set of pedestals upstanding from the elements of one of the arrays. The resulting configuration of the print head has structural simplicity which permits economical fabrication while retaining high resolution in the printing.
REFERENCES:
patent: 2841461 (1958-07-01), Gleason
patent: 3157748 (1964-11-01), Eldredge
patent: 3161862 (1964-12-01), Williams
patent: 3182296 (1965-05-01), Baldwin, Jr. et al.
patent: 3195115 (1965-05-01), Bradley
patent: 3196416 (1965-07-01), Williams
patent: 3278913 (1966-10-01), Raffel
patent: 3348931 (1967-10-01), Reekstin, Jr.
patent: 3386101 (1968-05-01), Sims, Jr.
patent: 3445830 (1969-05-01), Middlehoek
patent: 3490011 (1970-01-01), Ransom
patent: 3707706 (1972-12-01), Kefalas
patent: 3890623 (1975-06-01), Schmid et al.
patent: 4001841 (1977-01-01), Berkowitz
patent: 4072957 (1978-02-01), Kokaji et al.
patent: 4097871 (1978-06-01), Berkowitz et al.
patent: 4158213 (1979-06-01), Griffith
patent: 4176362 (1979-11-01), Nelson
patent: 4257051 (1981-03-01), Lindsay et al.
patent: 4291314 (1981-09-01), Nathan et al.
patent: 4339760 (1982-07-01), Wang et al.
patent: 4342039 (1982-07-01), Wang
patent: 4442441 (1984-04-01), Kikuchi et al.
patent: 4470051 (1984-09-01), Springer
patent: 4503439 (1985-03-01), Springer
patent: 4525724 (1985-06-01), Franaszek et al.
Dove Derek B.
Keefe George E.
Yarmchuk Edward J.
Evans Arthur G.
International Business Machines - Corporation
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