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US 6,650,077 B1Granted
Method for controlling printer paper feed
AssigneeLexmark International, Inc.
InventorsMichael Anthony Marra, III, Barry Baxter Stout
Life of this patent
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AssigneeLexmark International, Inc.
InventorsMichael Anthony Marra, III, Barry Baxter Stout
Estimating the term…
A method for rotating a printer paper-feed roller toward a desired rotational position wherein the printer paper-feed roller is driven by a motor. One step includes controlling the motor with a signal which at least includes the product of a scale factor and a function of an error signal, wherein the error signal represents the difference between the actual rotational position and the desired rotational position of the printer paper-feed roller. Another step includes varying the scale factor in a predetermined manner over time when a predetermined condition has been met. In one example, the scale factor is decreased in a linear manner over time when the predetermined condition has been met. In one implementation, the predetermined condition is a predetermined rotational distance of the printer paper-feed roller from the desired rotational position.
A method for rotating a printer paper-feed roller toward a desired rotational position wherein the printer paper-feed roller is driven by a motor and wherein the method comprises the steps of:
A method for rotating a printer paper-feed roller toward a desired rotational position wherein the printer paper-feed roller is driven by a motor, wherein the motor is controlled by a controller, wherein the controller has an output signal, and wherein the method comprises the steps of:
A method for rotating a printer paper-feed roller toward a desired rotational position wherein the printer paper-feed roller is driven by a motor, wherein the motor is controlled by a controller, and wherein the method comprises the steps of:
A method for rotating a printer paper-feed roller toward a desired rotational position wherein the printer paper-feed roller is driven by a motor, wherein the motor is controlled by a controller, wherein the controller has an input signal and an output signal, wherein the input signal represents an error signal which is equal to the difference between the actual rotational position and the desired rotational position of the printer paper-feed roller, wherein the output signal includes the product of a scale factor and a function of the input signal, and wherein the method comprises the steps of:
A method for rotating a printer paper-feed roller toward a desired rotational position wherein the printer paper-feed roller is driven by a motor, wherein the motor is controlled by a controller, wherein the controller has an input signal and an output signal, wherein the input signal represents an error signal which is equal to the difference between the actual rotational position and the desired rotational position of the printer paper-feed roller, wherein the output signal includes the product of a scale factor and a function of the input signal, wherein the function is proportional to the time integral of the input signal, and wherein the method comprises the steps of:
A method for rotating a printer paper-feed roller toward a desired rotational position wherein the printer paper-feed roller is driven by a motor, wherein the motor is controlled by a controller, wherein the controller has an input signal and an output signal, wherein the input signal represents an error signal which is equal to the difference between the actual rotational position and the desired rotational position of the printer paper-feed roller, wherein the output signal includes the product of a scale factor and a function of the input signal, wherein the function is proportional to the time derivative of the input signal, and wherein the method comprises the steps of:
Dependencies are inferred from the claim text.