| 摘要 |
PROBLEM TO BE SOLVED: To develop a sheet having a structure that information printed on the front surface is highly confidential can be judged by only the rear surface without having to confirm the information printed on the front surface of the sheet, that forbids or disturbs the reuse of the rear surface of the sheet and that the structure has no effects on reading the information of the front surface of the sheet. SOLUTION: In the rear face reuse preventing sheet, reuse preventing elements such as characters, patterns, colored surface or combination of these elements, which forbid or disturb reuse of the rear surface as a memo sheet, a copying sheet, a sheet for envelope or the like, are previously printed on the rear surface of the sheet. COPYRIGHT: (C)2006,JPO&NCIPI
|
