Impact mechanism for impact printer

Details Impact mechanism for impact printer Impact mechanism for impact printer

1988-06-14

1989-10-17

Burr, Edgar S.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Means for repositioning carriage or platen thereon

4001442, 4001572, 400166, 400385, 400389, 4003881, 101 9319, 101 9329, 101 9348, B41J 904

Patent

active

048742651

ABSTRACT:
An impact mechanism for use in an impact printer, to deliver a printing force to drive a character element against a platen by means of a print tip movable toward and away from the platen. A rockable bail bar having an axis of rotation substantially parallel to the axis of the platen is constrained to limited angular movement toward and away from the platen by a prime mover connected to the bail bar. A push rod interconnects the print tip and the bail bar for delivering impact forces to the platen as the bail bar is moved toward the platen. The push rod is normally coupled to the bail bar for delivering impact forces to the platen and may be decoupled from the bail bar for drawing the pring tip away from the platen so as to allow the character element to be removed. A decoupling mechanism is provided to lift the push rod off of the bail bar and to recouple it to the bail bar as required.

REFERENCES:
patent: 4023662 (1977-05-01), Perurea
patent: 4086997 (1978-05-01), Wu
patent: 4652153 (1987-03-01), Kotsuzumi et al.
patent: 4657415 (1987-04-01), Khushi et al.
patent: 4668112 (1987-05-01), Guba et al.
patent: 4678355 (1987-07-01), Guba et al.
patent: 4681469 (1987-07-01), Guba
patent: 4737043 (1988-04-01), Guba et al.

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