Print medium handling
First Claim
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1. A method of assisting in handling a print medium on a spindle, said spindle being operatively connected with a motor, said method comprising the following steps:
- rotating said spindle by an outside force in a first direction when handling the print medium, said rotation generating an electromotive force opposing said rotation in said first direction, wherein said outside force is not from said motor; and
causing the motor to apply a torque in said first direction, said torque based on and proportional to the electromotive force opposing said rotation in said first direction.
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Abstract
A method of assisting in handling a print medium on a spindle, said spindle being operatively connected with a motor, said method comprising the following steps: rotating said spindle by an outside force in a first direction when handling the print medium, said rotation generating an electromotive force in said motor in a second direction, opposite to said first direction; and causing the motor to apply a torque in said first direction, said torque being proportional to the electromotive force generated in the second direction by the rotation of the spindle.
10 Citations
17 Claims
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1. A method of assisting in handling a print medium on a spindle, said spindle being operatively connected with a motor, said method comprising the following steps:
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rotating said spindle by an outside force in a first direction when handling the print medium, said rotation generating an electromotive force opposing said rotation in said first direction, wherein said outside force is not from said motor; and causing the motor to apply a torque in said first direction, said torque based on and proportional to the electromotive force opposing said rotation in said first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A print medium advance mechanism for advancing a print medium, said advance mechanism comprising at least a first spindle upon which a print medium can be loaded, a first motor operatively connected to said first spindle, and a control system,
said control system being adapted to determine an amount of electromotive force generated in the first motor when said first spindle is being rotated by an outside force, wherein said electromotive force opposes rotation of said first spindle, and wherein said outside force is not from said motor and, said control system being adapted to, in an assisted media handling operation, cause the first motor to apply a torque based on and proportional to said determined electromotive force.
Specification