Systems and methods for multi-pick detection
AssigneeXerox Corporation
InventorsDavid L. Knierim, Mark H. Cowan
Life of this patent
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Abstract
Detecting a multi-pick in a nip of a media feed mechanism, includes determining a limit of a property of a media feed mechanism that is related to the kinetic properties of one or more rollers that form a nip; monitoring the property of the media feed mechanism; determining a maximum value of the of the monitored property; comparing the maximum value to the limit; and determining, if the maximum value exceeds the operational limit, that a multi-pick has occurred.
Claims25
A method for detecting a multi-pick of sheets of a media in a nip of a media feed mechanism, comprising:
- determining a limit of a property of the media feed mechanism that is related to at least one kinetic property of one or more rollers that form a nip and are driven by a motor to rotate in a first direction (media feed direction), or are not driven, wherein the media feed mechanism feeds all the multi-picked sheets of the media in the first direction, and the kinetic property includes at least one of a rotational displacement, a torque, a force, an acceleration, a speed, and an energy required to produce at least one of the torque, the acceleration, the speed and the rotational displacement,
- monitoring the property of the media feed mechanism;
- and
- determining, if the monitored property exceeds the limit, that the multi-pick has occurred.
A system for detecting a multi-pick of sheets of a media, comprising:
- at least one controller that:
- accesses a data stream containing values representing kinetic properties of one or more rollers that form a nip and are driven by a motor to rotate in a first direction (media feed direction), or are not driven, and outputs sampled values that are sampled from the data stream at a predetermined sampling rate, wherein the rollers feed all the multi-picked sheets of the media in the first direction, and the kinetic property includes at least one of a rotational displacement, a torque, a force, an acceleration, a speed, and an energy required to produce at least one of the torque, the acceleration, the speed and the rotational displacement;
- and
- accesses the sampled values, analyzes the sampled values, and determines whether a multi-pick has occurred.
A storage medium storing a set of program instructions executable on a data processing device and usable for detecting a multi-pick of sheets of a media in a nip of a media feed mechanism, the set of program instructions comprising:
- instructions for determining a limit of a property of the media feed mechanism that is related to kinetic properties of one or more rollers that form a nip and are driven by a motor to rotate in a first direction (media feed direction), or are not driven, wherein the media feed mechanism feeds all the multi-picked sheets of the media in the first direction, and the kinetic property includes at least one of a rotational displacement, a torque, a force, an acceleration, a speed, and an energy required to produce at least one of the torque, the acceleration, the speed and the rotational displacement;
- instructions for monitoring the property of the media feed mechanism;
- and
- instructions for determining, if the monitored property exceeds the operational limit, that a multi-pick has occurred.
Dependencies are inferred from the claim text.