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US 6,805,342 B2Granted
Printer-control method and printer-control apparatus
AssigneeSeiko Epson Corporation
InventorsToshiyuki Takahara, Tetsuji Takeishi
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AssigneeSeiko Epson Corporation
InventorsToshiyuki Takahara, Tetsuji Takeishi
Estimating the term…
In accordance with printer-control method and printer-control apparatus according to the present invention, in speed control for a paper-supply motor from the time when a paper-supply roller starts a paper-supply operation to the time when an upper end of a printing paper abuts against a paper-feed roller and a driven roller thereof and then the paper-supply motor is stopped with the upper end portion of the printing paper being nipped by the paper-feed roller and the driven roller thereof, when a difference between a target speed and a current speed in a constant speed section under feedback control becomes equal to or larger than a predetermined value, a proportional gain coefficient used for speed control calculation is changed to a value which is larger than an usual value.
A printer-control method in speed control for a paper-supply motor from the time when a paper-supply roller starts a paper-supply operation to the time when an upper end of a printing paper abuts against a paper-feed roller and a driven roller thereof and then the paper-supply motor is stopped with the upper end portion of the printing paper being nipped by the paper-feed roller and the driven roller thereof, when a difference between a target speed and a current speed in a constant speed section under feedback control becomes equal to or larger than a predetermined value, a proportional gain coefficient used for speed control calculation is changed to a value which is larger than an usual value.
A printer-control apparatus comprising a feedback control component which changes a proportional gain coefficient used for speed control calculation to a value which is larger than an usual value when a difference between a target speed and a current speed in a constant speed section under feedback control becomes equal to or larger than a predetermined value in speed control for the paper-supply motor from the time when a paper-supply roller starts a paper-supply operation to the time when an upper end of a printing paper abuts against a paper-feed roller and a driven roller thereof and then the paper-supply motor is stopped with an upper end portion of the printing paper being nipped by the paper-feed roller and the driven roller thereof.
A storage medium for computer program in which a computer program for executing, in a computer system, a printer-control method for changing a proportional gain coefficient used for speed control calculation to a value which is larger than an usual value when a difference between a target speed and a current speed in a constant speed section under feedback control becomes equal to or larger than a predetermined value in speed control for the paper-supply motor from the time when a paper-supply roller starts a paper-supply operation to the time when an upper end of a printing paper abuts against a paper-feed roller and a driven roller thereof and then the paper-supply motor is stopped with the upper end of the printing paper being nipped by the paper-feed roller and the driven roller thereof is recorded.
Dependencies are inferred from the claim text.