US Patent No. 10,893,592

IMAGE FORMING DEVICE


Patent No. 10,893,592
Issue Date January 12, 2021
Title Image Forming Device
Inventorship Masayuki Furusawa, Sakai (JP)
Kazushi Yamaneki, Sakai (JP)
Kenta Konishi, Sakai (JP)
Assignee SHARP KABUSHIKI KAISHA, Sakai (JP)

Claim of US Patent No. 10,893,592

1. An image forming device comprising:operation keys operated by a operator;
a pattern light emission portion including a plurality of light sources; and
a light emission controller that controls light emission of a plurality of types of light emission patterns from the pattern light emission portion, wherein
the pattern light emission portion notifies the operator of information on operations of the operation keys,
the light emission controller emits respective light emission patterns corresponding to a plurality of types of operations by the operator on the operation keys,
the respective light emission patterns include respective series of light emission patterns from turn-on to turn-off of the plurality of light sources, and
when emission of a preceding light emission pattern corresponding to a preceding operation of one of the operation keys among the plurality of types of light emission patterns temporally overlaps with emission of a subsequent light emission pattern corresponding to an operation of another one of the operation keys subsequent to the preceding operation, the light emission controller stops the emission of the preceding light emission pattern corresponding to the preceding operation of the one of the operation keys before the turn-off of the emission of the preceding light emission pattern, and preferentially emits the subsequent light emission pattern having a delayed light emission start timing.