Patent ID: 8528891
Filing Date: 2013-09-10
Classification: B31F,B65H

Abstract:
1. A creasing device creasing a sheet, the creasing device comprising: a first member extending in a direction perpendicular to a direction, in which the sheet is conveyed, and including a creasing blade protruding from the first member; a first receiving member including an attachment surface, to which the first member is configured to be attached; a second member arranged to face the first member and including a first creasing channel on a first surface of the second member and a second creasing channel on a second surface of the second member opposite to the first surface, the first creasing channel configured to allow the creasing blade to be fitted thereinto with the sheet between the first creasing channel and the creasing blade, the second creasing channel configured to allow the creasing blade to be fitted thereinto with the sheet between the second creasing channel and the creasing blade; a second receiving member including an attachment surface, to which the second member is configured to be attached; and a driving section configured to bring the first member and the second member into contact with each other and configured to separate the first member and the second member from one another to cause the sheet stopped at a predetermined position to be pinched between the first member and the second member and creased, wherein at least any one of the attachment surface of the first receiving member and the attachment surface of the second receiving member is arcuate, when the first member is attached to the attachment surface of the first receiving member and the second member is attached to the attachment surface of the second receiving member in a manner that the first member and the second member face each other, a blade edge of at least one of the creasing blade and the creasing channel has an arcuate shape convex toward one another, and the second member is configured to attach to the second receiving member so that one of the first creasing channel and the second creasing channel faces the creasing blade.