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Motor control apparatus, sheet conveying apparatus, and image forming apparatus

A technology of control devices and motors, applied in the field of image forming devices and motor control devices, to achieve the effect of preventing large-scale

Active Publication Date: 2018-04-20
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, a new signal line for the stop signal is required, which is a factor for increasing the size of the circuit board.

Method used

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  • Motor control apparatus, sheet conveying apparatus, and image forming apparatus
  • Motor control apparatus, sheet conveying apparatus, and image forming apparatus
  • Motor control apparatus, sheet conveying apparatus, and image forming apparatus

Examples

Experimental program
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Embodiment Construction

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, embodiment described below is only an example which actualized this invention, and does not limit the technical scope of this invention.

[0023] figure 1 It is a diagram showing the configuration of an image forming apparatus 10 according to an embodiment of the present invention. Also, in the following descriptions, sometimes the figure 1 Up-down direction 2, left-right direction 3 and front-back direction 4 shown in .

[0024] Such as figure 1 As shown, the image forming apparatus 10 is a printer, and uses toner to print an image on the sheet member P1. In addition, the image forming apparatus 10 is not limited to a printer having only a printing function. For example, the present invention can also be applied to a facsimile machine, a copier, or a digital multifunction machine having various functions such as a printing function, a copying function, ...

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PUM

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Abstract

The present invention provides a motor control device (58), which includes: a pulse width detection unit (595), a speed control unit (591), a pulse width storage unit (596), an identical pulse detection unit (597), and a stop processing unit (598) . The pulse width detection unit detects the pulse width of the pulse included in the pulse signal when a pulse signal is input. The speed control unit performs acceleration control to accelerate the rotational speed of the drive motor from zero to the target rotational speed, and deceleration control to decelerate the rotational speed of the drive motor to zero. The identical pulse detection unit detects the difference between the pulse width detected by the pulse width detection unit and the pulse width stored in the pulse width storage unit among the pulses included in the pulse signal input during the deceleration control. The pulse width of the first pulse is the same as that of the pulse width. The stop processing unit stops the control of the rotation speed of the drive motor by the speed control unit.

Description

technical field [0001] The present invention relates to a motor control device for controlling a drive motor, a sheet conveyance device including the motor control device, and an image forming apparatus including the sheet conveyance device. Background technique [0002] Conventionally, image forming apparatuses such as copiers, printers, facsimile machines, and digital multifunction machines are provided with a plurality of rollers for conveying a sheet member on which an image is formed, and these rollers are driven by a drive motor. As the drive motor, a servo motor such as a DC brushless motor may be used, for example. Also, it is known that a DC brushless motor is used as a driving motor for driving a conveyance roller that conveys a sheet from a sheet feeding cassette (see Patent Document 1). [0003] In an image forming apparatus employing the servo motor as a driving source of the conveying roller, a detector such as a rotary encoder is generally provided in order t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P27/08H02P1/46H02P3/18H02P1/52G03G15/36H02P6/06B65H7/00B65H5/06
CPCG03G15/50G03G15/602H02P27/08H02P1/46H02P3/18H02P6/06B65H5/06B65H2555/24B65H7/00B65H2557/23B65H2557/33Y02P70/10H02P29/00B65H5/062B65H2801/06G03G15/6529H02P1/52
Inventor 山岸友树大西贤一
Owner KYOCERA DOCUMENT SOLUTIONS INC