Recorders – Magnetographic – Magnetographic head
Patent
1982-05-26
1984-09-04
Tarcza, Thomas H.
Recorders
Magnetographic
Magnetographic head
G01D 1512
Patent
active
044700512
ABSTRACT:
Apparatus for producing a preselected final image in a travelling magnetic image-storage medium, which image is formed of an arrangement of individual magnetic image units and line segments formed of a plurality of linearly disposed contiguous units having a predetermined center-to-center spacing. Adjacent units in adjacent line segments have substantially the same predetermined center-to-center spacing when viewed in a direction substantially normal to the direction of travel, and also have a known maximum actual center-to-center spacing. Plural magnetic writing heads, each capable of producing an image unit, are distributed to have, when viewed in a direction substantially parallel with the direction of travel of the medium, a center-to-center spacing equalling that of contiguous units in a line segment. The actual center-to-center spacing between heads capable of forming adjacent image units in a line segment exceeds the mentioned center-to-center spacings between adjacent units. A controller receives data defining a desired final image from an input channel, and develops time-coordinated signals which energize heads selectively at appropriate times as the medium travels past the heads, to effect recording on the same of image units and line segments to form the final image. The heads may be distributed in one or more side-by-side adjacent columns, each extending along a path oblique both to the direction of travel of the medium, and to the line along which a line segment may be written.
REFERENCES:
patent: 4072957 (1978-02-01), Kokaji et al.
patent: 4176362 (1979-11-01), Nelson
patent: 4380768 (1983-04-01), Palombo et al.
Ferix Corporation
Tarcza Thomas H.
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