| 摘要 |
PURPOSE:To ensure secrecy and to utilize paper resources by using copy forms whose copy contents can be erased and recopied physically and chemically, and providing an erasing and a form reproducing process. CONSTITUTION:A copy form 1 consists of a copy form base 2, a coating layer 3 in which copies characters, graphic forms, etc., are erasable by physical or chemical processing, and a solvent prevention layer 4 which serves as a conduction processing layer. A copy to the copy form 1 is taken by a copying machine 9. At this time, copy characters, graphic forms, etc., are copied to the copy form 1A so that they are erased by the physical or chemical processing. When the copied form 1A is not necessary any more, the copied characters, graphic forms, etc., are erased in an erasing process 14. The copy form 1 is formed in a copy form forming process 16 so that the erased form 1B can be recopied, and consequently the copy is used in a cycle state. Thus, the copy form is reused, the copied characters, graphic forms, etc., are erased by the physical or chemical processing, and its secrecy is ensured completely. |
