| 摘要 |
A laser-beam image recording apparatus for recording images on a light-sensitive sheet medium through irradiation of an information-carrying laser beam, comprising a laser beam generator for emitting a laser beam, a polygonal mirror for directing the laser beam toward a linear zone and deflecting the laser beam to swing repeatedly along the linear zone, roller arrangement for transporting a light-sensitive sheet medium to pass through the linear zone, a sensor for detecting an arrival of the leading edge of the sheet medium at the linear zone, and a control circuit for modulating the laser beam to be generated by the laser beam generator, the control circuit being operative to modulate the laser beam depending on the image to be recorded on a leading portion of a light-sensitive sheet medium before the sensor detects that the leading edge of the sheet medium which has been advancing toward the linear zone reaches the linear zone and to modulate the laser beam depending on the images to be recorded on a portion subsequent to the leading portion of the sheet medium after the sensor detects that the leading edge of the sheet medium advanced toward the linear zone has reached the linear zone.
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