Recording material determination apparatus and image forming apparatus

An image forming apparatus comprising:

• an image forming unit configured to form an image on a recording material;
• a feeding unit configured to feed the recording material stacked on a staking unit;
• a conveyance unit configured to convey the recording material to the image forming unit;
• a first detection unit configured to irradiate the recording material with light and detect the light via the recording material;
• and
• a second detection unit configured to irradiate the recording material with an ultrasonic wave and detect the ultrasonic wave via the recording material,
• wherein the first detection unit and the second detection unit are located opposite each other with respect to the conveyance unit, the first detection unit and the second detection unit are located at the downstream side of the feeding unit in the direction of conveying the recording material,
• 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, and
• wherein an image forming condition of the image forming unit is set based on results of detections performed by the first detection unit and the second detection unit.

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;
• and
• a second detection unit configured to irradiate the recording material with an ultrasonic wave and detect the ultrasonic wave via the recording material,
• wherein the first detection unit and the second detection unit perform respective detection operations at different timings,
• wherein the first detection unit performs a detection operation in a state in which the recording material is conveyed, and
• wherein the second detection unit performs a detection operation in a state in which the recording material is stopped.

An image forming apparatus comprising:

• an image forming unit configured to form an image on a recording material;
• a conveyance unit configured to convey the recording material to the image forming unit;
• a first detection unit configured to irradiate the recording material with light and detect the light via the recording material;
• and
• a second detection unit configured to irradiate the recording material with an ultrasonic wave and detect the ultrasonic wave via the recording material,
• wherein the first detection unit and the second detection unit perform respective detection operations at different timings, the different timings meaning that the first detection unit performs a detection operation in a state in which the recording material is conveyed, and whereas the second detection unit performs a detection operation in a state in which the recording material is stopped, and
• wherein an image forming condition of the image forming unit is set based on results of detections performed by the first detection unit and the second detection unit.

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
• wherein the first detection unit and the second detection unit perform respective detection operations in a state in which the recording material is stopped.

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
• the first detection unit includes an image reading sensor configured to irradiate light to a surface of the recording material, to capture light reflected from the surface of the recording material as an image, and to detect a surface condition of the recording material based on the captured image, and
• wherein the first detection unit and the second detection unit perform respective detection operations substantially at the same timing.

An image forming apparatus comprising:

• an image forming unit configured to form an image on a recording material;
• a conveyance unit configured to convey the recording material to the image forming unit;
• a first detection unit configured to irradiate the recording material with light and detect the light via the recording material;
• and
• a second detection unit configured to irradiate the recording material with an ultrasonic wave and detect the ultrasonic wave via 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
• wherein the first detection unit and the second detection unit perform a detection operation while the conveyance unit stops the recording material, and an image forming condition of the image forming unit is set based on results of detections performed by the first detection unit and the second detection unit.

An image forming apparatus comprising:

• an image forming unit configured to form an image on a recording material;
• a conveyance unit configured to convey the recording material to the image forming unit;
• a first detection unit configured to irradiate the recording material with light and detect the light via the recording material;
• and
• a second detection unit configured to irradiate the recording material with an ultrasonic wave and detect the ultrasonic wave via 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
• wherein the first detection unit and the second detection unit perform a detection operation at the same time, and an image forming condition of the image forming unit is set based on results of detections performed by the first detection unit and the second detection unit.