Tabulation control systems for printing apparatus

Details Tabulation control systems for printing apparatus Tabulation control systems for printing apparatus

1974-07-26

1979-04-17

Shapiro, Paul E.

Typewriting machines

Control of print position along print-line by signal...

B41J 2500, G06K 1500

Patent

active

041496191

ABSTRACT:
A tabulation control system including a tab position memory shift register for memorizing tab-set position signals representing summed up values from the first position in a range in which tab setting operations are possible. A buffer register is connected to receive tab-set position signals in response to shift signals according to tab commands, a printing head position counter for counting the total and number of shifts of a printing head from the first position is provided. Also provided is coincidence detector which compares the output from the buffer register with the output of the counter and stops the printing head when these outputs coincide with each other.

REFERENCES:
patent: 2739690 (1956-03-01), Blodgett
patent: 2818961 (1958-01-01), Toeppen
patent: 3091387 (1963-05-01), Locke
patent: 3286237 (1966-11-01), Kikuchi
patent: 3519118 (1970-07-01), Reszka
patent: 3646268 (1972-02-01), Ricciardi et al.
patent: 3749223 (1973-07-01), Guzak, Jr.
patent: 3854566 (1974-12-01), Ellis
IBM Technical Disclosure Bulletin, vol. 13, No. 8, 1-71, pp. 2141-2142.
IBM Technical Disclosure Bulletin, vol. 13, No. 8, 3-71, pp. 3182-3184.

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