Position detection device, rotating body detection control device, rotating body trael device and image forming device

摘要

A position detection device, includes a scale; and an image pickup device which is configured to capture a mark pattern of the scale formed with a consecutive mark pattern generated by a change in prescribed reflectivity or permeability, the mark pattern of the scale being formed with substantially identical mark patterns which are disposed in a main moving direction of the scale continuously, and the mark pattern being arranged such that a part of the mark pattern in a sub moving direction intersecting with the main moving direction is projected, when the mark pattern is projected on the image pickup device, the position detection device being configured to detect a moving position of the scale by capturing the mark pattern of the scale with the image pickup device.