| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent edge parts of a cleaning blade from deforming and breaking at the time of a thrust in a cleaning device which cleans the cleaning blade while thrusting it. SOLUTION: When a thrust shaft 30 is forced to slide through the rotation of a thrust gear 35, the cleaning blade 20 slides toward a frame 25 which is positioned and fixed with the elastic force of a 2nd spring 32 and when the thrust gear further rotates to release the thrust shaft from being forced to slide, the cleaning blade slides in the reverse direction with the elastic force of a 1st spring 26, so that the thrust shaft slides, having its tip held in contact with a slanting surface of the thrust gear with the elastic force of the 2nd spring.
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