| CPC H04N 1/00819 (2013.01) [H04N 1/0097 (2013.01); H04N 1/00689 (2013.01); H04N 1/00692 (2013.01); H04N 1/00779 (2013.01); H04N 1/00822 (2013.01); H04N 1/00896 (2013.01)] | 17 Claims |
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1. An image reading apparatus, comprising:
a medium placing part at which a medium is placed;
a medium detection sensor configured to detect presence or absence of the medium at the medium placing part;
a transport unit configured to transport the medium placed at the medium placing part, wherein the transport unit comprises at least one of a roller or a motor;
a reading unit configured to read the medium transported by the transport unit and output a reading result, wherein the reading unit comprises at least one of a light source, an image sensor, a lens or a mirror; and
a processor configured to control the transport unit and the reading unit,
wherein
before transporting of the medium by the transport unit, the processor is further configured to execute a calibration processing of calibrating the reading unit when the medium detection sensor detects that the medium is present,
the processor is further configured to execute, after the calibration processing, the calibration processing each time a first time-period elapses in a state where the medium detection sensor detects that the medium is present, and
when a start instruction of reading the medium is received, the processor is further configured to start transport of the medium by the transport unit, and cause the reading unit to read the medium on a basis of calibration information of a last calibration processing.
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