Open loop carriage control for dot-matrix printer using tables

Details Open loop carriage control for dot-matrix printer using tables Open loop carriage control for dot-matrix printer using tables

1989-03-20

1991-07-23

Wiecking, David A.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400124, 400903, B41J 1930

Patent

active

050338897

ABSTRACT:
A method for operating a dot-matrix printer to allow printing in the accelerating and decelerating regions of the carriage traverse, which comprises the steps of: firing the wires for registration at the present position of the carriage and stepping the carriage by energization of a stepper motor driving the carriage for the period required to complete the step when accelerating the carriage or the period required to brake the carriage when decelerating the carriage. These times will decrease as the carriage accelerates to the desired velocity and will increase as the carriage decelerates from the desired velocity.

REFERENCES:
patent: 4044882 (1977-08-01), Weinke
patent: 4203678 (1980-05-01), Nordstrom
patent: 4468140 (1984-08-01), Harris
patent: 4693618 (1987-09-01), Nanagate
patent: 4733981 (1988-03-01), Takeuchi
patent: 4869610 (1989-09-01), Nishizawa

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