CORRECTION VALUE DETERMINATION DEVICE, CORRECTION VALUE DETERMINATION METHOD AND OPTICAL SCANNER

摘要

PROBLEM TO BE SOLVED: To provide a correction value determination device for correcting supply current of a semiconductor laser by using a correction value determined based on a plurality of measured illuminance distributions to output desired amount of light; a correction value determination method; and an optical scanner. SOLUTION: The correction value determination device includes: a measurement unit for measuring an illuminance of the laser exposure-scanning an image carrier; a first measurement means performing the measurement based on first supply current; a second measurement means performing the measurement based on second supply current; and a correction value determination means. The correction value determination means calibrates a value obtained by quantizing a difference between a first measurement value and a reference value based on a difference between the first measurement value and an expectation illuminance to be measured in a notice point when performing drive by the second supply current, and stores the calibrated value as the correction value in the notice point. COPYRIGHT: (C)2009,JPO&INPIT