Technique for controlling the position of a driving motor and a

Details Technique for controlling the position of a driving motor and a Technique for controlling the position of a driving motor and a

1997-06-19

1999-12-14

Burr, Edgar

Typewriting machines

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

400174, 400175, B41J 2116

Patent

active

060008695

ABSTRACT:
A device for accurately controlling the positions of a driving motor and a print head and enhancing print quality by sensing the position of the driving motor by occurring pulses from a timer at shorter intervals than predetermined step units and synchronously driving the print head with control of the driving motor, includes a synchronizing pulse generator for generating high speed synchronizing pulses for controlling the position of the driving motor and the print head, a position controller for synchronously controlling the position of the driving motor with divided generated pulses, a print head controller for synchronously controlling the position of the print head with the divided generated pulse, an interrupt controller for receiving interrupt signals generated in the position controller during the acceleration and deceleration of the driving motor and for generating interrupt in the priority order, and a CPU (central processing unit) for generating interrupts according to interrupt request signals, setting time in the generator, outputting signals for controlling the driving motor according to the set time during the acceleration and deceleration periods and governing all the component blocks.

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