Patent ID: 8045868

Claim:
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; and a conveyance unit configured to convey the recording material, wherein the first detection unit and the second detection unit are located opposite each other with respect to the conveyance unit, and 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 first detection unit and the second detection unit are located at such positions that both the first detection unit and the second detection unit are capable of detecting a recording material while the conveyance unit is conveying the recording material.