Patent ID: 7620361
Filing Date: 2009-11-17
Classification: G03G

Abstract:
1. An image forming apparatus that carries out image formation by forming an electrostatic latent image on a photosensitive drum and transferring an image produced by developing the electrostatic latent image onto a recording medium conveyed to a transfer position of the photosensitive drum, the image forming apparatus comprising: a detection device for detecting a leading edge position of the recording medium being conveyed, the detection device including a plurality of light detecting pixels disposed upstream side of the transfer position and aligned along a recording medium conveying direction; a determining device that determines image write timing for forming the electrostatic latent image on the photosensitive drum based on a difference in position between the leading edge position of the recording medium detected by said detection device and a predetermined reference position; and a second detection device for detecting the recording medium being conveyed, said second detection device including a plurality of second light detecting pixels disposed further upstream side of the transfer position than said light detecting pixels, and aligned along the recording medium conveying direction, wherein said determining device determines the image write timing for forming the electrostatic latent image on the photosensitive drum based on the difference in position between the leading edge position of the recording medium detected by said detection device and the predetermined reference position and a difference in position between the leading edge position of the recording medium detected by said second detection device and a predetermined second reference position.