| 摘要 |
PURPOSE:To control the operation so as to automatically attain a uniform, excellent and desired state in spite of the fluctuation of the exposure amount by providing a pressure roll mechanism that can change and control at least either the rotating speed or pressure of a pressure roll with the aid of a signal from an exposure amount detection part. CONSTITUTION:An additional mechanism to change the pressures of the pressure rolls 11 and 12 is provided. This mechanism has a motor 21, a drive gear 22 and a follower gear 23 connected to a bolt 15, and is so constituted to rotate the bolt 15. If a step motor is used for the motor, everything goes well. The 1st controller 24 to generate an applicable pulse output is connected to the step motor 21, and instructs the motor to rotate normally or reversely. A signal caused by the detection output of a photosensor 25 to detect the exposure amount on a recording paper 17' is inputted to the controller, and a corresponding output is given to the motor 21. |
