| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simple and inexpensive secrete processing sheet capable of making the content of a printed paper having the risk of information leak illegible only by copying it by a general copying machine. Ž<P>SOLUTION: A hatching pattern sheet is set in a position of a document table glass surface of the general copying machine, and a printed paper surface to be secret-processed is manually fed from a manual feed tray of the copying machine, or a printed general paper is set in an automatic feed sheet cassette, whereby overwriting is performed in manner of copying. According to this, a paper in which the whole printed text on the paper surface including a secret part is made illegible or difficult to read can be provided by printing the pattern over the printed text in a complicated superposed manner, and the reverse side that is a secret processed white sheet can be reused. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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