Method for conveying sheet member and sheet member-conveying apparatus

Abstract

Provided is a method for conveying a sheet member while the sheet member is supported by a roller member, the method including: detecting forces applied, by the sheet member supported by the roller member, to regions at both ends in a width direction of the roller member, respectively, as force components in a plurality of mutually different directions; and adjusting the force components in the regions at both ends in the width direction to a specific balance based on the detection results for the plurality of force components.

1 . A method for conveying a sheet member while the sheet member is supported by a roller member, the method comprising:
 detecting forces applied, by the sheet member supported by the roller member, to regions at both ends in a width direction of the roller member, respectively, as force components in a plurality of mutually different directions; and   adjusting the force components in the regions at both ends in the width direction to a specific balance based on the detection results for the plurality of force components.   
     
     
         2 . The method for conveying a sheet member according to  claim 1 , wherein
 the force components are adjusted in the adjustment so that a difference between the force components that correspond to each other in the regions at both ends in the width direction is reduced.   
     
     
         3 . The method for conveying a sheet member according to  claim 1 , wherein
 the sheet member is conveyed while being supported by at least a first roller member and a second roller member arranged on at least one of an upstream side and a downstream side of the first roller member,   the force components in the regions at both ends in the width direction of the first roller member are detected in the detection, and   the force components in the regions at both ends in the width direction are adjusted to the specific balance in the adjustment by adjusting arrangement of at least one of the the first and second roller members.   
     
     
         4 . The method for conveying a sheet member according to  claim 1 , wherein
 the roller member is a drive roller configured to be driven by a rotational driving force.   
     
     
         5 . The method for conveying a sheet member according to  claim 1 , wherein
 a plurality of forces selected from six forces that are three forces along three mutually different directions and three moments that rotate about the three directions serving as axes are detected in the detection as the force components in the plurality of directions.   
     
     
         6 . A sheet member-conveying apparatus configured to convey a sheet member, the apparatus comprising:
 a roller member configured to convey the sheet member to a downstream side while supporting the sheet member;   a detection unit configured to detect forces applied, by the sheet member supported by the roller member, to regions at both ends in a width direction of the roller member, respectively, as force components in a plurality of mutually different directions; and   an adjustment unit configured to adjust the force components in the regions at both ends in the width direction to a specific balance based on the detection results for the plurality of force components.   
     
     
         7 . The sheet member-conveying apparatus according to  claim 6 , wherein
 the adjustment unit is configured to adjust the force components that correspond to each other in the regions at both ends in the width direction so that a difference between the force components is reduced.   
     
     
         8 . The sheet member-conveying apparatus according to  claim 6 , wherein
 the roller member includes a first roller member and a second roller member arranged on at least one of an upstream side and a downstream side of the first roller member,   the detection unit detects the force components in the regions at both ends in the width direction of the first roller member, and   the adjustment unit is configured to adjust the force components in the regions at both ends in the width direction to the specific balance by adjusting arrangement of at least one of the first and second roller members.   
     
     
         9 . The sheet member-conveying apparatus according to  claim 6 , wherein
 the roller member is a drive roller configured to be driven by a rotational driving force.   
     
     
         10 . The sheet member-conveying apparatus according to  claim 6 , wherein
 the detection unit is configured to detect a plurality of forces selected from six forces that are three forces along three mutually different directions and three moments that rotate about the three directions serving as axes, as the force components in the plurality of directions.