Scanning optical series driving device

Abstract

Abstract PURPOSE:To shorten the length of a rack by fixing one of a pair of racks to the body of a copying machine, and at the same time, connecting another rack to the first optical series and connecting a pinion to the second optical series. CONSTITUTION:The device constists of a pair of upper and lower racks 29, 30 extending in the direction of moving of the optical series, a pinion 31 that engages with these racks and a pinion shifting device 32 that shifts the pinion 31 in the direction of shifting of the optical system. The lower rack 30 is fixed to the body of the copying machine 2, and upper rack 29 is attached to the frame 27 of the optical series X, and a supporting member 33 is connected to the frame 28 of the second optical series Y. A pinion shifting device 32 is attached to the supporting member 33, and the pinion 31 is fixed to the output shaft 34 of the shifting device 32. The pinion 31 is rotated in normal and reverse direction. The pinion 31 rolls on the lower rack 30, and at the same time, the second optical series Y moves synchronously with the pinion 31, and the upper rack 29 and the first optical series X moves at a double speed in the same direction with the second optical series Y with rolling of the pinion 31. Accordingly, light path length of the scanning optical series to the photosensitive drum goes to constant.

Inventors

• 👤 Seiji Hayashi
• 👤 林　清司
• 👤 Hiroyuki Tanaka
• 👤 宏幸 田中

Bibliographic Details