Patent ID: 6345171
Filing Date: 2002-02-05
Classification: G03G

Abstract:
An image forming apparatus comprising:image forming means for forming a developer image on an image carrier; image transferring means for transferring the developer image developed on the image carrier on an image receiving material; travelling means for conveying the image receiving material toward the image carrier; aligning means for conveying the image receiving material to the travelling means synchronizing with the transfer of the developer image formed on the image carrier; fixing means for fixing the developer image on the image receiving material while conveying the image receiving material which already has the developer image transferred; writing means for writing at least two inspection marks on the travelling means with a prescribed time difference provided between them and also writing at least two inspection marks on the image receiving material being conveyed by the aligning means with the same time difference as the prescribed time difference provided between them; detecting means for detecting an inspection mark written on the travelling means and an inspection mark written on the image receiving material; and drive control means for controlling the drive of at least one of the travelling means, aligning means and fixing means.