| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an apparatus for preparing paper in which identifiable magnetic elements blendable in a desired position in the plane and thickness of the paper are blended so as to prevent falsification or leakage of confidential information by illegal copying, illegal printing, etc., and prevent theft of confidential documents, securities, etc., by illegal carrying out, etc., and to provide a method therefor. <P>SOLUTION: The apparatus is equipped with the following. A paper raw material feeding means for feeding the paper raw material onto a machine wire of a paper machine, a magnetic material solution feeding means for feeding a magnetic material solution containing a magnetic material mixed therein onto the machine wire, a position controlling means for controlling the feed position of the magnetic material solution on the machine wire with the magnetic material solution feeding means, a feed controlling means for controlling the feed of the paper raw material from the paper raw material feeding means and the feed of the magnetic material solution from the magnetic material solution feeding means so that the magnetic material contained in the magnetic material solution fed with the magnetic material solution feeding means is blended in the paper prepared from the paper raw material fed from the paper raw material feeding means. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
