Patent ID: 8948682
Filing Date: 2015-02-03
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a sheet feed unit that feeds a sheet to an image forming unit forming a toner image on the sheet; a fixing unit that fixes the toner image to the sheet; a re-transport unit that re-transports the sheet with the toner image fixed thereto by the fixing unit to the image forming unit; a recognition unit that recognizes a number of sheets with an image formed thereon in a one-side image formation operation for forming an image on one side of a sheet; a timer that measures passage of a time; and a control unit that controls the re-transport unit when performing duplex image formation for forming an image on both sides of a sheet after the one-side image formation, the control unit controlling the re-transport unit to halt a first sheet on which the image is formed on the one side thereof in the duplex image formation until the timer measures the passage of the time based on the number of sheets recognized by the recognition unit.