Title:
CIRCUIT BOARD AND IMAGE FORMATION DEVICE
Document Type and Number:
Japanese Patent JP2017050508
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for preventing problems from occurring in the operation of a circuit on a circuit board due to the noise occurring in the signal line of the circuit board attached to the housing of an image formation device, when electrostatic discharge takes place during operation of the image formation device.SOLUTION: A transport motor drive board 202 includes a motor control IC305 for controlling a transport motor according to a control signal, and an enable signal circuit 30 to which a signal is inputted from a body control board. The enable signal circuit 30 is constituted of multiple passive elements, and includes a filter circuit for filtering noise superposed on the control signal due to electrostatic discharge occurred on the outside of the drive board 202. The filter circuit is constituted by not providing a passive element between a signal pattern, between an input terminal 301 and the motor control IC305 and the ground plane of the drive board 202, but providing a passive element between the signal pattern and a power supply line 306.SELECTED DRAWING: Figure 3
Inventors:
HONPO TSUNAO
Application Number:
JP2015174992A
Publication Date:
March 09, 2017
Filing Date:
September 04, 2015
Export Citation:
Assignee:
CANON KK
International Classes:
H05K1/02; B41J29/00; H05K1/18
Attorney, Agent or Firm:
Yasunori Otsuka
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
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