Method for recording data, and printed body printed by the method, and data recording medium, and method for reading data from data recording the medium

摘要

PCT No. PCT/JP91/01632 Sec. 371 Date Jul. 28, 1992 Sec. 102(e) Date Jul. 28, 1992 PCT Filed Nov. 27, 1991 PCT Pub. No. WO92/09972 PCT Pub. Date Jun. 11, 1992.A method of recording a large quantity of data by one code mark. Four bit indicating fields (2a, 2b, 2c, 2d) for denoting a binary number of four bits are provided on the surface of a card (1). One numerical value is recorded by indicating predetermined bit parts of the four bit indicating fields (2a-2d) with the same color, and plural kinds of colors are mixedly given to the four bit indicating fields (2a-2d).