Patent ID: 8550456

Claim:
An image forming apparatus having an image forming portion and a sheet conveying apparatus which corrects a skew feeding of a sheet and conveys the sheet to the image forming portion, comprising: a skew feeding detection portion which detects a skew feeding quantity of the sheet; a skew feeding correction portion which corrects the skew feeding of the sheet; a side edge detection portion which detects a side edge position of the sheet in a width direction perpendicular to a sheet conveying direction after the skew feeding of the sheet has been corrected by the skew feeding correction portion; a side edge correction portion which moves the sheet in the width direction while conveying the sheet to correct the side edge position of the sheet; a data storage portion which stores a deficiency quantity of an inclination quantity and a deficiency quantity of a motion quantity in the width direction incurred in the side edge correction portion with respect to the sheet conveying direction at the time of moving the side edge correction portion in the width direction; and a controller which controls the skew feeding correction portion to correct the skew feeding of the sheet in accordance with the skew feeding quantity detected by the skew feeding detection portion and the deficiency quantity of the inclination quantity stored in the data storage portion, and which controls the side edge correction portion to correct a position of the side edge correction portion in the width direction in accordance with the side edge position of the sheet detected by the side edge detection portion and the deficiency of the motion quantity stored in the data storage portion.