Motor driven single element printer

Details Motor driven single element printer Motor driven single element printer

1978-06-21

1980-08-05

Sewell, Paul T.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Imprint by pivoting of type-head-carrier and type-head...

4001623, 400163, 400166, B41J 160

Patent

active

042159431

ABSTRACT:
A printer has a horizontally movable carrier which supports a print head including a print element on which are disposed type characters in a two dimensional array with the element controllably movable by motors in two degrees of freedom to selectively position each type character opposite a record-medium-carrying platen for printing. The print head is on a rocker having a cam follower which cooperates with a cam on a shaft driven by a variable speed motor which is also on the carrier. During printing the motor speed is controlled so that the print element is driven against the platen with a force related to the particular character being printed. The motor speed is further controlled so that there is not only a minimum wait between the printing of successive characters but there are also minimum accelerations and decelerations of the motor.

REFERENCES:
patent: 3014569 (1961-12-01), Palmer
patent: 3628644 (1971-12-01), Cralle et al.
patent: 3695410 (1972-10-01), Kapp
patent: 3788443 (1974-01-01), Menzi
patent: 3789971 (1974-02-01), Deyessa et al.
patent: 3924721 (1975-12-01), Reynolds

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