| 摘要 |
PROBLEM TO BE SOLVED: To provide a device which increases the image forming speed without increasing the rotating speed of an optical deflector. SOLUTION: This device has faces to be scanned on bath sides of a single optical deflector 2 and scans these faces while making modulated beams SL and SR incident on deflecting faces of the optical deflector 2 facing the faces to be scanned. An intersection T of virtual extensions of incident beams SL and SR is off a center line (y) of the optical deflector 2 parallel with faces to be scanned and to one side of this line. |
