Patent ID: 6385427
Filing Date: 2002-05-07
Classification: G03G

Abstract:
An image forming apparatus comprising:a plurality of image forming units, each including an image holding component on which an image for a different color is formed and including a transfer component for transferring the image formed on each image holding component onto a recording sheet at a respective transfer position; a transporter for holding a recording sheet and sequentially transporting the recording sheet to each transfer position of the plurality of image forming units; a controller which coordinates the operation of the plurality of image forming units and the transporter, and which sets a system speed of the image forming apparatus at a first speed when a first mode is set to form a color image using the plurality of image forming units and sets the system speed of the image forming apparatus at a second speed which is faster than the first speed when a second mode is set to form a single-color image using only an image forming unit provided at a most downstream position in a transportation direction of the transporter, with the system speed being equivalent to an image formation speed of each of the image forming units and a transportation speed of the recording sheet by the transporter; and an attraction unit which applies attractive force that attaches the recording sheet to a surface of the transporter, and wherein when the second mode is set, the controller applies to the attraction unit a bias voltage higher than a bias voltage applied when the first mode is set.