Light scanning device and image forming apparatus

摘要

A light scanning device includes a scanning unit and a power consumption unit. The scanning unit faces a scan surface and performs scanning by dividing one scan area into segments by having multiple light-emitting-element groups arranged in a predetermined scanning direction. Each light-emitting-element group writes an image onto the scan surface by causing multiple light-emitting elements arranged in the scanning direction to emit light in a time-division manner based on image information. The power consumption unit operates during a non-writing period occurring between scanning processes repeatedly executed in each light-emitting-element group, so as to cause consumption of electric power corresponding to electric power consumed for light emission in the light-emitting-element group.

主权项

1. A light scanning device comprising:
a scanning unit that faces a scan surface and that performs scanning by dividing one scan area into segments by having a plurality of light-emitting-element groups arranged in a predetermined scanning direction, each light-emitting-element group writing an image onto the scan surface by causing a plurality of light-emitting elements arranged in the scanning direction to emit light in a time-division manner based on image information; an light-emission signal output unit that outputs an light-emission signal causing the plurality of light-emitting-element groups to emit image light corresponding to the image information only during each writing period; and a power consumption unit that operates during each non-writing period occurring between writing periods repeatedly executed in each light-emitting-element group, the power consumption unit outputting a forced-light-emission-signal only during the non-writing period causing consumption of electric power corresponding to electric power consumed for light emission in the light-emitting-element group during the writing period.