Bookbinding apparatus and image forming system

Abstract

A bookbinding apparatus for providing wrapping-binding of a booklet by bonding a cover sheet on the spine portion of a sheet bundle to wrap the sheet bundle with the cover sheet, wherein the sheet conveyance path of the bookbinding apparatus includes a notch forming device to form notches on the end to be coated with adhesive when the sheet is subjected to bookbinding process.

1 . A bookbinding apparatus for bonding a cover sheet to an end portion of a bundle of sheets and for producing a booklet by wrapping the bundle of sheets with the cover sheet, the bookbinding apparatus comprising: 
 a notch forming mechanism for forming notches, before each sheet is formed into the bundle of sheets, on an end side of the each sheet to be coated with adhesive.    
     
     
         2 . The bookbinding apparatus of  claim 1 , 
 wherein the notch forming mechanism is positioned in a path for conveyance of a sheet and on an upstream side, in a conveyance direction of the sheet, of a sheet bundle storing section where a plurality of sheets are stacked.    
     
     
         3 . The bookbinding apparatus of  claim 1 , 
 wherein the notch forming mechanism forms notches on one sheet at a time.    
     
     
         4 . The bookbinding apparatus of  claim 1 , structured such that whether notches are formed on a sheet or not, is selectable.  
     
     
         5 . The bookbinding apparatus of  claim 1 , 
 wherein the notch forming mechanism comprises:    a die fixed on a sheet conveyance path;    a punch which has projected blades and is raised and lowered while fitting the die; and    a driving mechanism for raising and lowering the punch.    
     
     
         6 . An image forming system comprising: 
 an image forming apparatus body including 
 an image forming section for forming an image on a sheet; and  
 a sheet conveyance mechanism for conveying a sheet, the image forming system further comprising:  
   a bookbinding apparatus for forming notches on an end side of a sheet on which an image has been formed by the image forming apparatus body, for stacking a plurality of sheets on which the notches have been formed so as to form a bundle of sheets, for applying adhesive on an end portion of a side of the bundle of sheets where the notches have been formed, for bonding a cover sheet thereon, and for wrapping the bundle of sheets with the cover sheet to make a booklet.    
     
     
         7 . The image forming system of  claim 6 , 
 wherein the bookbinding apparatus comprises a notch forming mechanism for forming notches on a sheet on an upstream side, in a conveyance direction of the sheet, of a sheet bundle storing section where a plurality of sheets are stacked to make a bundle of sheets.    
     
     
         8 . The image forming system of  claim 6 , 
 wherein the bookbinding apparatus comprises a notch forming mechanism which forms notches on one sheet at a time.    
     
     
         9 . The image forming system of  claim 6 , structured such that whether notches are formed on a sheet or not, is selectable in the bookbinding apparatus.  
     
     
         10 . The image forming system of  claim 6 , 
 wherein the bookbinding apparatus comprises a notch forming mechanism for forming notches on a sheet, the notch forming mechanism including:    a die fixed on a sheet conveyance path;    a punch which has projected blades and is raised and lowered while fitting the die; and    a driving mechanism for raising and lowering the punch.