Printing – Selective or progressive – Bed and platen machines
Patent
1984-03-20
1984-10-30
Crowder, Clifford D.
Printing
Selective or progressive
Bed and platen machines
101111, B41J 120
Patent
active
044794304
ABSTRACT:
Systems for discriminating among a plurality of type carriers differing in number of characters and pitch of characters are disclosed. In one circuit, the type carrier is provided with synchronizing marks and discrimination marks in addition to the usual type character marks. The synchronizing mark is located at the beginning of a set of characters, and the discrimination mark is located a predetermined distance from the synchronizing mark according to the number of characters and pitch of the particular type carrier. This distance is determined by counting type character marks. In another circuit, one or more discrimination marks are provided between type character marks at the beginning of a set of characters. The number of discrimination marks indicates the number of characters of the particular type carrier. In either circuit, a counter of only a few stages and a simple decoding circuit are all that are required to carry out the discrimination operation.
REFERENCES:
patent: 3845709 (1974-11-01), Gardiner
patent: 3880075 (1975-04-01), Bovett et al.
patent: 3899968 (1975-08-01), McDevitt
patent: 4055117 (1977-10-01), Munday
patent: 4074798 (1978-02-01), Berger
patent: 4152981 (1979-05-01), Sapino et al.
Katagiri Shigenobu
Kobayashi Tsuneki
Nakano Hiroshige
Crowder Clifford D.
Hitachi Koki Company Limited
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