Patent ID: 6281963
Filing Date: 2001-08-28
Classification: G03G

Abstract:
An image forming apparatus for forming an image on both of a first side and a second side which are the right side and the back side of a recording material, comprising:an image carrier on a surface of which a toner image is formed;a transfer member that forms a transfer part between the transfer member and the image carrier to transfer the toner image on the image carrier onto the recording material;a transfer voltage applying section that applies a transfer voltage to the transfer member;a fixing member that heats the recording material, on which the toner image is transferred by the transfer member, passed therethrough to fix the toner image on the recording material;a reversing path that reverses the two sides of the recording material passed through the fixing member and returns the reversed recording material to the transfer part again;a timer section that measures elapsed time since the recording material, on the first side of which a toner image is transferred, passes through the fixing member until the transfer of a toner image on the second side is started when an image is formed on the first and second sides of the recording material;a humidity detecting section that detects humidity; anda control section that selects transfer voltage to transfer a toner image on the second side of the recording material based upon elapsed time measured by the timer section and humidity detected by the humidity detecting section.