Patent ID: 8731453

Claim:
An image forming apparatus comprising: an image forming unit configured to form an image on the basis of image data; an intermediate transfer member configured to be driven at a predetermined moving speed, the image being primarily transferred from the image forming unit onto the intermediate transfer member; a transfer unit configured to secondarily transfer the image, primarily transferred onto the intermediate transfer member, onto a media; a conveying unit configured to convey the media to the transfer unit; a media detector disposed at the conveying unit and configured to detect the media that is being conveyed; and a conveying speed controller configured to control a conveying speed at which the conveying unit conveys the media, wherein the conveying speed controller controls the conveying unit to maintain the conveying speed at a constant conveying speed until the media is conveyed to the media detector, and after the media detector detects the media, the conveying speed controller controls the conveying unit to change the constant conveying speed, wherein the media detector comprising: a first detector configured to detect the media; and a second detector provided downstream of the first detector in a media conveying direction and upstream of a secondary-transfer position in the media conveying direction, wherein the conveying speed controller controls the conveying unit to change the conveying speed of the media from a first conveying speed to a second conveying speed different from the first conveying speed after the first detector detects the media and before the second detector detects the media, to maintain the conveying speed of the media at the second conveying speed, to change the conveying speed of the media from the second conveying speed to a third conveying speed different from the second conveying speed after the second detector detects the media, and to maintain the conveying speed of the media at the third conveying speed until the media arrives at the transfer unit.