B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
341/89
B41F 33/00 (2006.01) B41L 21/02 (2006.01) B41L 35/06 (2006.01) G07B 17/00 (2006.01)
Patent
CA 1146654
ABSTRACT OF THE DISCLOSURE As documents are moved serially past a servo motor-driven endor- ser, it endorses a stamp upon each. A transport signal dependent on docu- ment speed, and an endorser signal generated by an optical tachometer mounted to the servo motor, provide input to a frequency comparator. The output of the comparator is a control signal which controls the servo motor speed to adjust the endorser rotational surface velocity to equalization with the document speed. Logic circuitry sets the endorser at a zero angular position. Responsive to an endorse command, the endorser is acceler- ated to document speed, receives ink from a supply roller, then endorses the passing document. A counter and a digital comparator in cooperation with the tachometer signal completion of the endorsement whereupon the endorser is decelerated and placed in the zero position. Should a succeed- ing endorse command occur prior to complete deceleration, acceleration is resumed after a delay count given by a PROM and based upon the pulse count when the succeeding endorse command is received.
338762
Maclean George
Milanes Eddy J.
Pexton Harold W.
Magnetic Peripherals Inc.
Smart & Biggar
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