Printing column number limiting device

Details Printing column number limiting device Printing column number limiting device

1978-10-10

1980-12-02

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9329, 101 9309, 178 23R, B41J 120

Patent

active

042364477

ABSTRACT:
A device for limiting the number of printing columns in a printer in which a group of printing data codes transferred from a data source are successively compared with a group of type codes which are determined in correspondence to the instantaneous positions of type on a type carrier, so that a type in a place where a printing data code coincides with a type code is printed. The device comprises a reversible counter adapted to subject a coincidence signal relating to said printing data code and type code and a printing completion signal for each place to addition and subtraction, respectively, so that when the count value of the reversible counter reaches a predetermined value, printing for further places is inhibited.

REFERENCES:
patent: 3651487 (1972-03-01), Washington
patent: 3795186 (1974-03-01), Curtiss et al.
patent: 3872788 (1975-03-01), Palombo
patent: 3921517 (1975-11-01), Barcomb et al.
patent: 3944741 (1976-03-01), Harris et al.
patent: 3952648 (1976-04-01), Sery et al.
Blythe et al., "Hammer Firing Control in Belt Printers", IBM Tech. Discl. Bulletin, vol. 20, No. 4, 9/77, pp. 1319-1320.

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