Xerox Corporation

Mark H Cowan

David W Hanks

Marcia Dawn Haney

Michael W Whalen

David Lyell Knierim

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.

Systems and methods for multi-pick detection

A system and method for sensing the positioning the printhead in one or more of a standby position, a wipe position, and a printing position uses electrical signals from a drive motor as an indicator of whether the printhead has properly moved to a desired position. As the printhead is tilted to a print position, a first position electrical signal is detected by sampling a resistance on the torque motor at a first time. A second position electrical signal is determined by sampling another resistance on the motor at a second time. A slope is calculated between the first position sample and the second position sample. The calculated slope is analyzed to determine whether the printhead is operating properly. Thus, the need for standalone sensors to determine the positioning of the printhead is eliminated.

Systems and methods for determining printhead in a print position

A system and method for determining proper positioning of the printhead as it travels between first and second positions by sampling an electrical resistance signal of a motor during tilting of the printhead, calculating an average of specified samples at a time, and comparing the calculated average to a predetermined threshold to determine whether the printhead is operating properly. Thus, the need for sensors to determine the positioning of the printhead is eliminated.

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Sherwood, OR, United States of America

Mark H Cowan