Patent ID: 11932013
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 3:
4. The printing device according to claim 2, further comprising:
a controller configured to perform:
determining whether an output waveform of the second distance sensor is abnormal;
in response to determining that the output waveform of the second distance sensor is abnormal, determining whether a measurement portion by the second distance sensor is a leading portion of the printing medium;
in response to determining that the measurement portion by the second distance sensor is the leading portion of the printing medium, stopping the second distance sensor and emitting light from the first distance sensor; and
in response to determining that the measurement portion by the second distance sensor is not the leading portion of the printing medium, measuring the distance using both the first distance sensor and the second distance sensor.