Patent ID: 7126624

Claim:
An image recording method of recording a two-dimensional image formed by a group of light sources disposed two-dimensionally on a recording medium wound around an outer-surface of a drum rotating at a constant speed by exposing the recording medium by main scanning it with an optical system having a light deflector in a main scanning direction opposite to a rotating direction of the drum as well as moving the optical system in an auxiliary scanning direction approximately perpendicular to the main scanning direction, comprising the steps of: generating a drum start point detection signal each time the drum rotates once, synchronizing phase of the light deflector with rotation of the drum in response to the drum start point detection signal, and exposing the two-dimensional image of one frame formed by the group of light sources disposed two-dimensionally onto the recording medium while causing the image at rest on the recording medium relatively thereto; moving the optical system, after the one frame has been exposed, in the auxiliary scanning direction by an integral multiple of a pixel pitch forming the one frame as well as exposing a next frame by deflecting an angle of the light deflector in the main scanning direction by one frame; and correcting, when position at which the two-dimensional image of the one frame is to be recorded is dislocated in the auxiliary scanning direction at the time the recording medium is exposed in a subsequent one rotation of the drum after the recording medium has been exposed in one rotation of the drum, the position dislocated in the auxiliary scanning direction by changing an auxiliary scanning movement speed in a non-exposure time zone from completion of exposure of the recording medium in the one rotation of the drum to beginning of exposure of the recording medium in the subsequent one rotation of the drum.