DIN 32752-1
DIN 32752-1 Office machines - Testing of ink ribbons - Part 1: Creation of standard imprints A and measurement of the reflectometer-factor
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/1995
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/1995