US 11,930,576 B2
Image forming device
Masato Sueyasu, Nagoya (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Dec. 27, 2022, as Appl. No. 18/146,599.
Claims priority of application No. 2021-214853 (JP), filed on Dec. 28, 2021.
Prior Publication US 2023/0209684 A1, Jun. 29, 2023
Int. Cl. G03G 15/043 (2006.01); H05B 45/37 (2020.01); H05B 45/50 (2022.01)
CPC H05B 45/50 (2020.01) [G03G 15/043 (2013.01); H05B 45/37 (2020.01)] 10 Claims
OG exemplary drawing
 
1. An image forming device, comprising:
a photosensitive drum;
an LED head configured to expose a surface of the photosensitive drum;
a main controller board comprising a main controller, a voltage output circuit, a first voltage terminal, a second voltage terminal and a first input/output terminal connected to the main controller, the voltage output circuit being configured to output a first voltage via the first voltage terminal and a second voltage via the second voltage terminal, the first input/output terminal being configured to input and output a control signal; and
an LED controller board comprising a third voltage terminal, a fourth voltage terminal, a second input/output terminal and an LED controller, the third voltage terminal being electrically connected to the first voltage terminal via a first wiring, the fourth voltage terminal being electrically connected to the second voltage terminal via a second wiring, the second input/output terminal being electrically connected to the first input/output terminal via a control wiring, the LED controller being configured to transmit and receive the control signal to and from the main controller via the second input/output terminal to control light emission of the LED head,
wherein the LED controller board is configured to output a voltage according to the first voltage input to the third voltage terminal to the LED head, the LED controller being electrically connected to the fourth voltage terminal, a voltage according to the second voltage input to the fourth voltage terminal being input to the LED controller.