MEDIUM DETECTION MECHANISM, MEDIUM DETECTION METHOD, AND PRINTING APPARATUS

摘要

A medium detection mechanism includes a medium guide that holds a medium and an optical sensor including an irradiation section that emits irradiation light to the medium guide and a light receiving section that receives reflected light. An amount of received light that is received by the light receiving section from among reflected light of external light that enters the medium guide and reflected light of the irradiation light is smaller than or equal to a predetermined value.

主权项

1. A medium detection mechanism comprising:
a medium guide that holds a medium; and an optical sensor including an irradiation section that emits irradiation light to the medium guide and a light receiving section that is arranged to receive reflected light of the medium guide or the medium, wherein a sensor angle of the optical sensor with respect to the medium is set so as to differ from an angle which maximizes the amount of received light at the light receiving section when there is the medium on the medium guide.