Patent ID: 8864133
Filing Date: 2014-10-21
Classification: B41J,B65H,G03G

Abstract:
1. A method for correcting an edge portion of a sheet material, comprising: passing the sheet material through an edge correcting device, wherein the edge correcting device comprises: wherein a difference between a maximum radius and a minimum radius of each of the side rollers is less than or equal to a thickness of the sheet material, wherein a difference between a radius of the center shaft and a minimum radius of each of the side rollers is greater than the thickness of the sheet material, and wherein when a sheet material having a length largest in a direction orthogonal to a sheet material conveying direction is sandwiched between the first roller and the second roller, a pressure is applied by the pressing unit in such a manner that an amount of deflection of the center portion of the second roller is less than the thickness of the sheet material.