Printing – Selective or progressive – Bed and platen machines
Patent
1980-01-28
1981-06-30
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101 9329, 400155, 364900, B41J 120
Patent
active
042756537
ABSTRACT:
A printer system comprising a belt printer mechanism controlled by a stored program digital microprocessor to print lines of data on a print medium. Selective operation of a linear array of print hammers, paper feeding, data conversion and arranging in scan/subscan order are performed by the microprocessor. The fire data for operating hammers is precalculated and arranged in scan/subscan order during the print medium feeding interval with printing occurring immediately at the first print scan after print medium motion in which one or more desired characters become aligned with print hammers. An indirect addressing technique which eliminates sorting is used to arrange the print position fire data in scan/subscan order.
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Bolcavage Richard D.
Fleek Arthur E.
Marcus Mitchell P.
Coven Edward M.
Gasper John S.
International Business Machines - Corporation
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