Packaging structure for planographic printing plates and method of packaging the same

Abstract

In a method of packaging planographic printing plates disclosed herein, a stack is formed by planographic printing plates and interleaf sheets, or by only planographic printing plates. The stack is packaged with internal packaging paper without using conventional protective cardboard. In a packaging structure for planographic printing plates, the stack is loaded on a loading member and a top plate is placed on the stack. The stack and the loading member are integrally bound with a fixing band made of resin without using a conventional bolt-fastening operation. A reinforcing plate is fixed onto the top plate correspondingly to the fixing band so as to prevent bending or deformation of the top plate.

What is claimed is:  
     
         1 . A packaging structure for planographic printing plates in which planographic printing plates are packaged, comprising: 
 a stack in which only a plurality of planographic printing plates, or a plurality of planographic printing plates and a plurality of interleaf sheets each protecting a coating film of the planographic printing plate are stacked in a thickness direction; and    a packaging material for packaging the stack.    
     
     
         2 . The packaging structure of  claim 1 , wherein the packaging material comprises an internal packaging material for internally packaging the stack, and an external packaging material for packaging the stack internally packaged with the internal packaging material.  
     
     
         3 . The packaging structure of  claim 1 , further comprising a loading member on which at least one packaged stack in the state of being packaged with the packaging material is loaded.  
     
     
         4 . The packaging structure of  claim 1 , further comprising a marker member which is disposed at every predetermined number of planographic printing plates constituting the stack.  
     
     
         5 . The packaging structure of  claim 2 , wherein the external packaging material is a box made of corrugated fiberboard.  
     
     
         6 . The packaging structure of  claim 3 , wherein the number of planographic printing plates which constitute the stack is approximately in the range of 10 to 200.  
     
     
         7 . A method of packaging planographic printing plates in which a packaging structure for planographic printing plates, comprising a stack in which only a plurality of planographic printing plates, or a plurality of planographic printing plates and a plurality of interleaf sheets each protecting a coating film of the planographic printing plate are stacked in a thickness direction, and a packaging material for packaging the stack, is formed, said method comprising the steps of: 
 stacking a plurality of planographic printing plates to form a stack; and    packaging the stack formed by the stacking step with the packaging material.    
     
     
         8 . The method of  claim 7 , wherein the packaging material comprises an internal packaging material for internally packaging the stack, and an external packaging material for packaging the stack internally packaged with the internal packaging material.  
     
     
         9 . The method of  claim 7 , wherein the packaging structure further comprises a loading member on which at least one packaged stack in the state of being packaged with the packaging material is loaded.  
     
     
         10 . The method of  claim 7 , wherein the packaging structure further comprises a marker member disposed at every predetermined number of planographic printing plates constituting the stack.  
     
     
         11 . The method of  claim 7 , wherein the number of planographic printing plates constituting the stack is approximately in the range of 10 to 200.  
     
     
         12 . The method of  claim 8 , wherein the external packaging material is a box made of corrugated fiberboard.  
     
     
         13 . A packaging structure for planographic printing plates, comprising: 
 a planographic-printing-plate loading member on which a stack formed by stacking a plurality of planographic printing plates in a thickness direction can be loaded;    an end plate which is disposed in contact with the stack at a side opposite to the planographic-printing-plate loading member;    a binding member for binding the planographic-printing-plate loading member, the stack and the end plate in the state of being wound thereon; and    a reinforcing member mounted on the end plate so as to be positioned between the end plate and the binding member, the reinforcing member being provided so as to alleviate pressure from the binding member and make the pressure to act on the end plate.    
     
     
         14 . The packaging structure of  claim 13 , wherein the reinforcing member has a rigidity higher than the end plate.  
     
     
         15 . The packaging structure of  claim 13 , wherein the reinforcing member is formed so as to extend along the binding member continuously from one end of the end plate to the other end.  
     
     
         16 . The packaging structure of  claim 13 , wherein the reinforcing member comprises first reinforcing plates, and second reinforcing plates, the first reinforcing plates disposed and fixed on the end plate parallel to shorter sides of the end plate, the second reinforcing plates disposed parallel to longer sides of the end plate and interposed between two of the first reinforcing plates.  
     
     
         17 . The packaging structure of  claim 13 , wherein the reinforcing member comprises reinforcing plates, and four reinforcing blocks, the reinforcing plates disposed and fixed on the end plate parallel to shorter sides of the end plate, the reinforcing blocks each interposed between the reinforcing plate and the shorter side of the end plate, and a side of each of the reinforcing blocks coinciding with the shorter side of the end plate.  
     
     
         18 . The packaging structure of  claim 13 , wherein the reinforcing member comprises first reinforcing blocks, and second reinforcing blocks, a side of each the first reinforcing blocks coinciding with the shorter side of the end plate, a side of each of the second reinforcing blocks coinciding with the longer side of the end plate.  
     
     
         19 . The packaging structure of  claim 14 , wherein the loading member includes a supporting plate for slantingly supporting the stack leaning on the loading member, the end plate contacting with the stack and facing the supporting plate, the binding member integrally binding the end plate, the stack and the supporting plate.  
     
     
         20 . The packaging structure of  claim 15 , wherein the binding member includes fixing bands disposed approximately parallel to a shorter side of the end plate.