A PROCESS FOR THE PREPARATION OF A SECURITY PAPER CONTAINING SEMI-TRANSPARENT MARK AND THE SECURITY PAPER PREPARED THEREBY

摘要

The present invention by squeezing the propelled paper by a paper machine, was passed through between two rotating rolls, including a roll having the unevenness of any shape, for producing a paper having a clear translucent marks of shape corresponding to the concave-convex shape technology, is capable of a color-developing position at the same position as the mark when adding a color developing function to the semi-transparent mark is useful for anti-counterfeiting, and authenticity discrimination of the paper.