20 HOLE PUNCH FOR STANDARD SIZE OF SERIES A-FIVE

摘要

PROBLEM TO BE SOLVED: To provide a 20 hole punch for standard size of series A-5 capable of improving portability and storage by thinning and shortening space saving in comparison with a traditional multiple hole punch simultaneously while improving outer appearance of a filed style by increasing a selecting range of a file sheet endlessly, performing an effect of source saving by reduction of sheet size, simplifying file operation and improving mobility of filing by doubly corresponding to various sizes of the sheets with one unit by a paper contact guide as well as by carrying out 20 hole punching work on an object of standard size of series A-5. ;SOLUTION: It has a characteristic to provide a paper contact guide 5 forming a projected part 4 corresponding to an A5 block - 20 hole, an A4 block - 30 hole, a B5 block - 26 hole and a latter size - 20 hole on a left side support plate 3 by installing 20 pieces of punchess for holing a handle by providing 20 pieces of working hole of a die for holing a base 1.;COPYRIGHT: (C)2000,JPO