Patent ID: 8391735
Filing Date: 2013-03-05
Classification: B65H,G03G

Abstract:
1. A recording material determination apparatus configured to determine a type of a recording material, the recording material determination apparatus comprising: a first detection unit configured to irradiate the recording material with light and detect the light via the recording material; a second detection unit configured to irradiate the recording material with an ultrasonic wave and detect the ultrasonic wave via the recording material, wherein vibrations of the recording material being detected by the second detection unit with the ultrasonic wave are suppressed by a contact unit in contact with the recording material, and the first detection unit and the second detection unit are located at a downstream side of a feeding unit configured to feed the recording material stacked on a stacking unit in a direction of conveying the recording material, and wherein the recording material is at a position where the second detection unit detects the recording material when the recording material is at a position where the first detection unit detects the recording material.