Patent attributes
There are provided a thickness detecting apparatus which can restrain erroneous detection even though a sheet or the like overlaps with only a part of a rotary body, and, which can enhance the degree of accuracy of detection, comprising a cylindrical displaceable rotary body and a cylindrical stationary rotary body which are opposed to each other, the thickness detecting apparatus detecting a thickness of the sheet or the like to be transferred in accordance with a displacement by which the displaceable rotary body is separated from the stationary rotary body, when the sheet or the like passes through between the displaceable rotary body and the stationary rotary body, and the center of a load with which the displaceable rotary body presses the sheet or the like is biased from the center of the displaceable rotary body in one of center axial direction.
