Document endorser apparatus
November 7, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3335661 3537393 3641313 Method and apparatus for synchronous printing of a moving web Device for sensing the direction of motion Resonant sensor using a phase locked loop detector Document endorsing control circuitry and method for minimizing power consumption requirements Digital photo-optical tachometer Speedometer and odometer apparatus Single revolution mechanism InventorsAssigneeApplicationNo. 05/958478 filed on 11/07/1978US Classes:101/235, Single revolution101/248, Cylinder-registering mechanisms324/165, With direction indicator324/166, Including speed-related frequency generator324/172, Including synchronized recording medium377/17, Position determining377/2, Control377/3, Counting on an object, areas having alternating physical properties (e.g., counting lines on grid, teeth on gear, windings on coil)377/53With photoelectric sensorExaminersPrimary: Eickholt, Eugene H.Attorney, Agent or FirmInternational ClassesB41L 21/00 (20060101)B41L 21/02 (20060101) B41L 35/00 (20060101) B41L 35/06 (20060101) G07B 17/00 (20060101) AbstractAs documents are moved serially past a servo motor-driven endorser, it endorses a stamp upon each. A transport signal dependent on document 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 accelerated 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 succeeding 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.Other References
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