Printing – Selective or progressive – Bed and platen machines
Patent
1978-05-12
1980-10-28
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101 9323, 101110, 101 9309, B41J 124
Patent
active
042300398
ABSTRACT:
A printing apparatus includes a type drum the outer circumferential surface of which has a first set of type including a plurality of type faces arranged in a counter-clockwise spiral and a second set of type including a plurality of type faces arranged in a clockwise spiral. The type drum is both reciprocated and rotated in synchronous fashion by cooperation between reciprocating and rotating drive means so that the sets of type disposed on the type drum pass the positions of a plurality of printing hammers confronting the drum and adapted to perform printing by striking the type faces on the drum through an inked ribbon and recording medium.
REFERENCES:
patent: 2926602 (1960-03-01), MacDonald et al.
patent: 3433153 (1969-03-01), Harrington et al.
patent: 3599772 (1971-08-01), Comstock
patent: 3604347 (1971-09-01), Muterspaw
patent: 3669237 (1972-06-01), Wagner et al.
patent: 3675753 (1972-07-01), Perucca
patent: 3724631 (1973-04-01), Kaczeus
patent: 3896919 (1975-07-01), Hutley
Kinoshita Teruo
Kunita Masao
Kurihara Toshio
Mizutani Nagao
Nishiyama Yutaka
Citizen Watch Company Limited
Coven Edward M.
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