Patent ID: 11902476
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  B  G | IPC G  H

Claim 9:
10. The inspection device according to claim 1,
wherein the controller comprises:
a processor; and
a non-transitory computer-readable medium storing computer-readable instructions configured to, when executed by the processor, cause the controller to:
cause the light source to emit light toward the white reference section, and receive the pixel signal output from the reader when the light receiving element receives the reflected light from the white reference section;
determine the rate of decrease in the pixel value relative to the reference data, based on the received pixel signal;
when the rate of decrease is equal to or higher than the first threshold, output the instruction signal concerning the instruction to clean the reader;
after outputting the instruction signal, re-determine the rate of decrease in response to receiving input of the completion signal concerning completion of cleaning of the reader; and
update the reference data using the re-determined rate of decrease.