Printer for different character densities

Details Printer for different character densities Printer for different character densities

1977-10-17

1979-04-24

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9348, 101 9314, B41J 930

Patent

active

041506197

ABSTRACT:
Impact printing apparatus for recording at different character densities having an interposer unit movable between a plurality of print hammers and type chain to provide a translation function for the variable character-to-character distances required of the different character densities. During low density recording the interposer unit renders ineffective certain of the print hammers otherwise used for the higher density. A single type chain may be used with different interposer arrangements to obtain the various densities or type chains of different densities can be used.

REFERENCES:
patent: 3332343 (1967-07-01), Sims
patent: 3715978 (1973-02-01), Raider
patent: 3795186 (1974-03-01), Curtiss et al.
patent: 4055117 (1977-10-01), Munday
Dowd, "Cooperating Print Hammers", IBM Tech. Discl. Bulletin, vol. 17, No. 4, 9/74, pp. 1012-1013.
Heydkamp et al., "Print Hammer Arrangement", IBM Tech. Discl. Bulletin, vol. 9, No. 8, 1/67, pp. 1013-1014.

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