Printing – Selective or progressive – Bed and platen machines
Patent
1975-04-14
1977-04-05
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101110, 101 9322, B41J 144
Patent
active
040155218
ABSTRACT:
Apparatus for printing characters on a printout surface comprise a shaft having a longitudinal axis, a plurality of curved segments mounted side by side on the shaft for individual angular movement about the axis, each of the segments having a series of character types on an outer curved surface and a distinct first surface feature, such as a projection or a recess, behind each of the character types in an inner curved surface. The segments are also movable toward and away from the printout surface perpendicularly to the mentioned axis. The apparatus further includes equipment for selectively positioning the character types adjacent the printout surface, including devices for individually moving the segments angularly relative to the mentioned axis and for selectively resetting the segments to a rest position. The apparatus further includes equipment for selectively moving the shaft and segments toward and away from the printout surface, including a print hammer structure having a second surface feature for engagement of the segments at the first surface features behind athe selectively positioned character types of the angularly moved segments, and equipment coupled to the hammer structure for actuating the angularly moved segments at the first surface features with the print hammer structure toward the printout surface for a printout of the characters on the selectively positioned character types.
REFERENCES:
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patent: 3731622 (1973-05-01), Baranoff
patent: 3771442 (1973-11-01), Ditman
patent: 3861302 (1975-01-01), Mizutani et a.
patent: 3865030 (1975-02-01), Chida et al.
patent: 3874286 (1975-04-01), Ishikawa
patent: 3878779 (1975-04-01), Clary
Bell & Howell Company
Coven Edward M.
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