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

Claim 5:
6. The inspection device according to claim 5,
wherein the memory stores a state of a stain flag, and
wherein the controller is further configured to, when the rate of decrease is equal to or higher than the first threshold, and the elapsed period since the last update of the reference data is shorter than the first particular period, perform:
when the state of the stain flag is “OFF,” after outputting the instruction signal, re-determining the rate of decrease in response to receiving input of the completion signal;
when the re-determined rate of decrease is equal to or higher than a third threshold, outputting the instruction signal again, to repeat the output of the instruction signal until the re-determined rate of decrease becomes lower than the third threshold;
when the re-determined rate of decrease becomes lower than the third threshold while the number of times the instruction signal has been output is equal to or less than a second particular number of times, storing the re-determined rate of decrease as a fourth threshold into the memory, and setting the state of the stain flag to “ON”;
when the state of the stain flag is “ON,” after outputting the instruction signal, re-determining the rate of decrease in response to receiving input of the completion signal;
when the re-determined rate of decrease is equal to or higher than the fourth threshold, outputting the instruction signal again, to repeat the output of the instruction signal until the re-determined rate of decrease becomes lower than the fourth threshold; and
when the re-determined rate of decrease becomes lower than the fourth threshold while the number of times the instruction signal has been output is equal to or less than a third particular number of times, storing the re-determined rate of decrease as the fourth threshold into the memory.