STRUCTURE OF PAPER'S SIDE FACE

摘要

A lateral side structure of paper which has a slope with at least one edge comprising acute angle is provided to maximize turning over efficiency of pages, so as to reduce working time required for turning over pages. A lateral side structure of paper forms a slope(02) on the basis of the front and back side of paper, which includes at least one edge(03) of acute angle on the lateral side. One of the two edges on the lateral side is formed at an acute angle and the other is formed at an obtuse angle.