US 12,111,595 B2
Optical scanning device, image forming apparatus, and control method for proper initialization of laser driver
Kazutaka Matsumoto, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Mar. 13, 2023, as Appl. No. 18/120,945.
Claims priority of application No. 2022-045771 (JP), filed on Mar. 22, 2022.
Prior Publication US 2023/0305466 A1, Sep. 28, 2023
Int. Cl. G03G 15/04 (2006.01); G02B 26/12 (2006.01); G03G 15/00 (2006.01)
CPC G03G 15/5004 (2013.01) [G02B 26/123 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An optical scanning device comprising:
a light emitter that emits a laser beam;
a driver that operates, depending on a signal inputted thereto, in a master state in which the driver performs an initialization by reading data from a storage device or in a slave state in which the driver drives the light emitter according to an operation mode corresponding to the signal; and
a signal outputter that outputs the signal to the driver, wherein
for the initialization of the driver, the signal outputter outputs a signal for setting the driver to the slave state and setting the operation mode to a specific operation mode,
the driver performs the initialization based on a beam intensity of the laser beam emitted from the light emitter driven according to the operation mode based on the signal outputted from the signal outputter,
when the driver is in the slave state, the signal outputter alternately and repeatedly outputs, to the driver, a signal corresponding to a first operation mode in which the driver drives the light emitter so that the beam intensity is a first beam intensity, and a signal corresponding to a second operation mode in which the driver drives the light emitter so that the beam intensity is a second beam intensity that is smaller than the first beam intensity, and
the driver performs the initialization based on the first beam intensity and the second beam intensity.