Sheet storage box

Abstract

A sheet storage box has a sheet-removing opening effectively forming the portion to remove the sheet easily from the opening and a portion to easily catch the sheet wherein, the shape of the rims of the opening of the sheet storage box designed to remove the sheet is formed in such a way that the movement of the sheet is reduced by adequately reducing the spatial area of the opening and the rims of the opening are converted to convex shape smooth curves to smoothly slide the sheet.

1 . A sheet storage box, wherein
 two pairs of smooth convex shape curved opening rims are provided at corners by considering the center of the opening as a center point, wherein   the two pairs of the opening rims are set one after the other and the height of the apexes of the opening rims present at the corners is the same or substantially the same and the height of the apexes of the adjacent or opposite opening rim is different,   an open space is formed as a result of constant absence of the opening rim or lid at three places i.e., within a circle of 3 mm in diameter at the center of the opening and within the circle of 2 mm in diameter at both ends of the opening, wherein   the two pairs of smooth convex shape curved opening rims are formed to be positioned in the spaces at the three places,   the opening rims forming the space at both ends of the opening are the depressions placed opposite each other across the convex shape curved opening rims and the rims of the opening forming the space including the center of the opening has depressions between the adjacent convex shape curved rims of the opening present at both sides and these depressions are placed opposite each other at the corners of the rims of the opening forming the space including the center of the opening, and   the opening rim is provided which takes the shape of nonlinear symmetry when the opening is rotated at 180 degrees by considering the straight line passing through the center of the opening which is parallel or substantially parallel to the average folded line of sheets stored to remove sheets from the opening as the axis and takes the shape of point symmetry or substantially point symmetry when the opening is rotated at 180 degrees by considering the center of the opening as the axis.   
     
     
         2 . A sheet-removing opening, wherein
 the depressions opposite each other located at the corners of the opening rims forming the space including the center of the opening according to  claim 1  are   depressions formed by joining the adjacent smooth convex shape curves by using the folded line shape or folded convex shape curves.   
     
     
         3 . A sheet-removing opening, wherein
 in the depressions opposite each other located at the corners of the opening rims forming the space including the center of the opening according to  claim 1 ,   a depression being depressed by 1 cm or more in the direction parallel to the folded line of a sheet is absent at the lower side than the center rim of the opening of smooth convex shape curved opening rims which support the sliding of the sheet.   
     
     
         4 . A sheet-removing opening, wherein
 the depressions opposite each other located at the corners of the opening rims forming the space including the center of the opening according to  claim 1  comprise,   one or a plurality of pairs of convex shape curved projections shorter than the height of the apexes of the convex shape curved opening rims present at both sides at the opposite corners of the depressions forming the space including the center of the opening.   
     
     
         5 . A sheet-removing opening, wherein
 the pair of depressions which forms the opening rims outside the circle of 2 mm in diameter present at both ends of the opening according to  claim 1  are   depressions themselves having the form including the concave shape curve.