Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1976-08-02
1978-08-29
Coven, Edward M.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
364900, 101 9305, 400 76, B41J 770
Patent
active
041097777
ABSTRACT:
A ticket printer is disclosed. A motor equipped with a centrifical speed governor, opposing ticket rollers and ticket transport tray rolls a blank, multipage ticket form past seven needle printing heads which are solenoid actuated and two sequencing switches. The ticket to be printed is inserted into the ticket transport tray and engages a motor operate switch which rotates certain ticket rollers at a governed speed. The ticket advances, pinched by opposing rollers and moves beneath the seven parallel needle printing heads and also actuates a print start switch which initiates electronic operation. The ticket continues its advance while being printed for N digits until the ticket disengages the motor start switch whereupon the drive motor rotates sufficiently to expel the ticket from the tray and printer. The apparatus accepts N digits of BCD formated data in serial fashion. This data is stored temporarily in the register, and is called sequentially by a multiplexer connected to a four line input into a BCD to seven segment decoder. The seven segment signals are output to a (X by Y) seven by five matrix which forms drive signals for dot keyers connected to seven solenoids. The solenoids are momentarily actuated to form a dot. They are actuated potentially five times during the advance of the ticket form to place each digit on the ticket form on a seven by five dot pattern.
REFERENCES:
patent: 2997152 (1961-08-01), Dirks
patent: 3869986 (1975-03-01), Hubbard
patent: 3892174 (1975-07-01), Marcher
patent: 3923135 (1975-12-01), Holman et al.
patent: 3942620 (1976-03-01), Dillinger et al.
patent: 3970184 (1976-07-01), Helmrich et al.
Callahan John A.
Ottenstein Allan S.
Coven Edward M.
Gunn Donald
Research Fuels, Inc.
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