发明名称 METHOD OF PRODUCING A SIMULATED WATERMARK
摘要 A method of producing a simulated watermark in which intense, focused heat is momentarily applied, in the desired watermark pattern, onto a thin solid matrix of waxy material placed in contact with a sheet of uncoated paper. This results in impression of a durable translucent mark. The wax penetrates the paper without the need either for chemical action or the application of significant direct pressure, and creates regions of translucence in the paper fibers.
申请公布号 CA2062164(C) 申请公布日期 2002.07.09
申请号 CA19922062164 申请日期 1992.03.02
申请人 发明人 ALLEN, PHILIP R.;NANGLE, JAMES E.
分类号 D21H27/02;B41M3/10;D21H19/18;D21H21/26;(IPC1-7):B05D5/06;B05D3/12 主分类号 D21H27/02
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