| 摘要 |
A screen of a rotary screen apparatus has a base layer, a protection layer and a reinforcement layer. The cylindrical base layer has holes in the circumferential surface thereof. On a part of the base layer facing a part of the outer peripheral surface of an impression cylinder not holding a paper sheet all along the length in the axial directions thereof, the protection layer, with a thickness approximately equal to that of a paper sheet, is provided continuously all along the length in the rotational direction. The reinforcement layer is provided on a part of the protection layer facing the gap portion of the impression cylinder.
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