Printing media feeding apparatus, printing apparatus provided with the feeding apparatus, printing media feeding speed control method and computer program
First Claim
1. A printing media feeding apparatus comprising:
- feeding means that includes a motor, a drive transmission mechanism which transmits a driving force of the motor, and a drive shaft to which the driving force is transmitted by the drive transmission mechanism, the drive shaft being rotated to feed the printing media;
detection means that is provided in the drive shaft and detects the rotational speed of the drive shaft; and
control means for controlling the motor, the control means controlling the motor based on an input from the detection means so that the rotational speed of the drive shaft becomes constant.
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Accused Products
Abstract
The present invention has been made to prevent density irregularity from appearing in a print result and to thereby improve image quality by controlling a motor so that the rotational speed of a drive shaft that feeds printing media becomes constant. The present invention provides a printing media feeding apparatus including a feeding section that includes a motor, a drive transmission mechanism which transmits a driving force of the motor, and a drive shaft to which the driving force is transmitted by the drive transmission mechanism, the drive shaft being rotated to feed the printing media, a detection section that is provided in the drive shaft and detects the rotational speed of the drive shaft, and a controller that controls the motor, the controller controlling the motor based on an input from the detection section so that the rotational speed of the drive shaft becomes constant.
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Citations
14 Claims
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1. A printing media feeding apparatus comprising:
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feeding means that includes a motor, a drive transmission mechanism which transmits a driving force of the motor, and a drive shaft to which the driving force is transmitted by the drive transmission mechanism, the drive shaft being rotated to feed the printing media;
detection means that is provided in the drive shaft and detects the rotational speed of the drive shaft; and
control means for controlling the motor, the control means controlling the motor based on an input from the detection means so that the rotational speed of the drive shaft becomes constant. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A printing apparatus comprising:
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a print head that prints visual data on printing media;
feeding means that includes a motor, a drive transmission mechanism which transmits a driving force of the motor, and a drive shaft to which the driving force is transmitted by the drive transmission mechanism, the drive shaft being rotated to feed the printing media;
detection means that is provided in the drive shaft and detects the rotational speed of the drive shaft; and
control means for controlling the motor, the control means controlling the motor based on an input from the detection means so that the rotational speed of the drive shaft becomes constant.
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8. A printing media feeding speed control method that rotates a drive shaft through a drive transmission mechanism transmitting a driving force of a motor to feed printing media, comprising the steps of:
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detecting the rotational speed of the drive shaft; and
controlling the rotation number of the motor based on the detected rotational speed so that the rotational speed of the drive shaft becomes constant. - View Dependent Claims (9, 10, 11)
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12. A computer program used for a printing media feeding speed control method that rotates a drive shaft through a drive transmission mechanism transmitting a driving force of a motor to feed printing paper, comprising the steps of:
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detecting the rotational speed of the drive shaft, and controlling the rotation number of the motor based on the detected rotational speed so that the rotational speed of the drive shaft becomes constant.
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13. A printing media feeding apparatus comprising:
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a feeding section that includes a motor, a drive transmission mechanism which transmits a driving force of the motor, and a drive shaft to which the driving force is transmitted by the drive transmission mechanism, the drive shaft being rotated to feed the printing media;
a detection section that is provided in the drive shaft and detects the rotational speed of the drive shaft; and
a controller that controls the motor, the controller controlling the motor based on an input from the detection section so that the rotational speed of the drive shaft becomes constant.
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14. A printing apparatus comprising:
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a print head that prints visual data on printing media;
a feeding section that includes a motor, a drive transmission mechanism which transmits a driving force of the motor, and a drive shaft to which the driving force is transmitted by the drive transmission mechanism, the drive shaft being rotated to feed the printing media;
a detection section that is provided in the drive shaft and detects the rotational speed of the drive shaft, and a controller that controls the motor, the controller controlling the motor based on an input from the detection section so that the rotational speed of the drive shaft becomes constant.
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Specification