Roll sheet assembly and roll sheet flange

Abstract

There is provided a roll sheet assembly including a cardboard tube, a roll sheet wound around the cardboard tube, a pair of flanges each disposed at one of both ends of the cardboard tube, and an inner shaft being inserted through the cardboard tube, and coupling the pair of flanges. At least one of the flanges includes a flange main body covering an end face of the roll sheet, and a joint provided at a center of an inner surface of the flange main body, and joined to an end of the inner shaft. The flange main body has a cutting line formed thereon, the cutting line being for separating the joint joined to the inner shaft from the flange main body.

What is claimed is: 
     
         1 . A roll sheet assembly comprising:
 a cardboard tube;   a roll sheet wound around the cardboard tube;   a pair of flanges each disposed at one of both ends of the cardboard tube; and   an inner shaft being inserted through the cardboard tube, and coupling the pair of flanges,   wherein at least one of the flanges includes
 a flange main body covering an end face of the roll sheet, and 
 a joint provided at a center of an inner surface of the flange main body, and joined to an end of the inner shaft, and 
   wherein the flange main body has a cutting line formed thereon, the cutting line being for separating the joint joined to the inner shaft from the flange main body.   
     
     
         2 . The roll sheet assembly according to  claim 1 , wherein the cutting line includes a cyclic cutting line that is formed around the joint on the flange main body. 
     
     
         3 . The roll sheet assembly according to  claim 2 , wherein the cutting line includes one or more coupling cutting lines that couple an outer edge of the flange main body with the cyclic cutting line. 
     
     
         4 . The roll sheet assembly according to  claim 3 ,
 wherein the roll sheet assembly is mountable on a holder, the holder being provided in a printer,   wherein an outer surface of the flange main body has a convex portion formed thereon, the convex portion being detected by a sensor disposed on the holder, and   wherein the coupling cutting lines are formed in a manner that the coupling cutting lines intersect the convex portion.   
     
     
         5 . The roll sheet assembly according to  claim 4 , wherein a slit is formed at a site on the flange main body, the coupling cutting lines intersecting the convex portion at the site. 
     
     
         6 . The roll sheet assembly according to  claim 3 , wherein the coupling cutting lines include a single spiral cutting line that couples the outer edge of the flange main body with the cyclic cutting line. 
     
     
         7 . The roll sheet assembly according to  claim 3 , wherein the coupling cutting lines include a plurality of linear cutting lines that couple the outer edge of the flange main body with the cyclic cutting line. 
     
     
         8 . The roll sheet assembly according to  claim 2 , wherein one or more slits are formed on the cyclic cutting line. 
     
     
         9 . The roll sheet assembly according to  claim 1 , wherein the joint includes a mating unit that mates with the end of the inner shaft. 
     
     
         10 . The roll sheet assembly according to  claim 9 , wherein the cutting line includes a split cutting line that splits the flange main body and the mating unit. 
     
     
         11 . The roll sheet assembly according to  claim 1 , wherein the cutting line includes perforations or a cutting guide kerf. 
     
     
         12 . The roll sheet assembly according to  claim 1 , wherein, when force is applied to the flange main body in a direction separated from the cardboard tube, the flange main body is cut along the cutting line and at least a part of the joint joined to the inner shaft is separated from the flange main body. 
     
     
         13 . A roll sheet flange comprising:
 a pair of flanges each disposed at one of both ends of a cardboard tube around which a roll sheet is wound; and   an inner shaft coupling the pair of flanges, the inner shaft being inserted through the cardboard tube in an axis direction,   wherein at least one of the flanges includes
 a flange main body covering an end face of the roll sheet, and 
 a joint provided at a center of an inner surface of the flange main body, and joined to an end of the inner shaft, and 
   wherein the flange main body has a cutting line formed thereon, the cutting line separating the joint joined to the inner shaft from the flange main body.