| 摘要 |
PROBLEM TO BE SOLVED: To provide a cleaner, fixing means, and image forming device which uses a web more efficiently by winding the web properly according to an amount of toner on copying paper. SOLUTION: Based on image density obtained in an image-signal processing, the average density of an original-document image is calculated by an average density generating part 35, and the total of the average density signals is calculated by a web controller 48. In the case the total value exceeds a certain threshold, a web drive signal is produced in a web drive solenoid 47 to drive the solenoid 47, thereby actuating a web wind lever 46. Until the value obtained by subtracting threshold from the total value becomes minus, this operation is repeated, and thus a proper amount of web 43 which matches each original document is wound. |
