Patent ID: 8413974
Filing Date: 2013-04-09
Classification: B65H,G03G

Abstract:
1. A creasing device for creasing sheets on a per-sheet basis, the creasing device comprising: a first member extending in a direction perpendicular to a sheet conveying direction and including a male blade, the male blade having a convex cross section; a second member extending in the direction perpendicular to the sheet conveying direction and including a grooved female blade, the female blade allowing the male blade to be fitted thereinto with a sheet between the female blade and the male blade; and a drive unit that brings the first member and the second member relatively into and out of contact with each other to cause a sheet stopped at a set position to be pinched between the first member and the second member and creased, wherein an edge portion of the female blade of the second member has a convex arcuate shape.