Image forming apparatus

An image forming apparatus comprising:

• a transfer portion configured to nip and convey a recording material and transfer a toner image to the recording material;
• a fixing portion that is located on a downstream side of the transfer portion in a conveyance direction of the recording material, and configured to nip and convey the recording material conveyed from the transfer portion to fix the toner image on the recording material;
• a detection unit that is disposed between the transfer portion and the fixing portion and is capable of detecting a deflection amount of the recording material;
• and
• a controller configured to control a conveying speed of the fixing portion,
• wherein the detection unit has a contact portion that comes into contact with the recording material and a detection portion that detects a position of the contact portion,
• wherein the contact portion is movable to a first position and a second position where the recording material is located by being deflected more than when the contact portion is at the first position,
• wherein the controller moves the contact portion from the first position toward the second position by outputting a signal for setting the conveying speed of the fixing portion to a first speed smaller than a conveying speed of the transfer portion when the contact portion is located at the first position, and moves the contact portion from the second position toward the first position by outputting the signal for setting the conveying speed of the fixing portion to a second speed larger than the conveying speed of the transfer portion when the contact portion is located at the second position, and
• wherein the controller determines an abnormal state of the fixing portion when the contact portion is located at the second position, and an output time of the signal for setting the conveying speed of the fixing portion to the second speed is longer than or equal to a predetermined time.