Patent ID: 6031562
Filing Date: 2000-02-29
Classification: G02B

Abstract:
An image forming apparatus which outputs a light for image formation in accordance with image data, the apparatus comprising:a light emitting unit which emits a forced light unrelated to image data so as to adjust an output timing of the light for image formation before outputting the light for image formation;a reflective member having a plurality of reflective surfaces which reflect said forced light emitted from said light emitting unit while rotating;a light receiving unit which receives the forced light reflected by said reflective surfaces;a counter which counts a time, between starting and completing, during which said light receiving unit receives said forced light reflected by a predetermined reflective surface;an adder which adds times counted by said counter for all reflective surfaces in accordance with a rotation of said reflective member; anda controller which controls a rotational speed of said reflective member based on the time added by said adder.