Microprocessor-controlled printing mechanism having an...

Details Microprocessor-controlled printing mechanism having an... Microprocessor-controlled printing mechanism having an...

B - Operations, Transporting

41

J

101/94

B41J 9/00 (2006.01) B41J 9/38 (2006.01) B41J 9/48 (2006.01) H01R 13/52 (2006.01)

Patent

CA 1210638

ABSTRACT OF THE DISCLOSURE A plunger armature printing system incorporates an opto-electronic sensor for sensing the movement of a vane fixed to the armature of the print mechanism. The output signal generated by the sensor is employed to define periods for measurement of the speed of movement of the armature. A microprocessor is employed for supplying accelerating and decelerating pulses to the armature magnet for causing the armature to achieve a preselected printing force, in response to the time intervals between similar signals produced by said sensor, and to return said armature to its rest position rapidly without rebound.

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