| 摘要 |
PURPOSE:To obtain a copy preventive form suitable for secrecy leakage prevention which allows recording information to be read with naked eyes, but makes the reading of even a copy obtained in either transmission or reflection copying method hard, by coloring one or both surfaces of a base in black, three primary colors, or mixed colors of those three primary colors. CONSTITUTION:Three sheets of tracing paper which has 53g/m<2> weighing and 60% transparency are used; and one surface is colored in black, and black and green while the other surface is made colorless, and yellow and green, and information is recorded on the other surface side in black. This obtained colored recording body has recording information read excellently with nakes eyes, but its diazotization copy and Xerox copy are both blackened to disable the reading of the recording information with naked eyes. |
