| 发明名称 |
METHOD AND APPARATUS FOR APPLYING CHEMICAL WATERMARKS ON SUBSTRATE |
| 摘要 |
A method and an apparatus for applying chemical watermarks (4) on substrate (2), e.g., paper, using a digital printer which prints ink (8) in a dot matrix pattern. The ink may contain either a translucentizing agent or an opacifying agent. The printer is digitally controlled to print ink in accordance with a computer program corresponding to a desired pattern or image.
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| 申请公布号 |
WO0115903(A1) |
申请公布日期 |
2001.03.08 |
| 申请号 |
WO2000US23801 |
申请日期 |
2000.08.30 |
| 申请人 |
INTERNATIONAL PAPER COMPANY |
发明人 |
DAIGNEAULT, ROBERT, L.;KOENIG, MICHAEL, F.;ONDRUSKA, OTTO;ROGERS, DANIEL, R.;YANG, JIYUE |
| 分类号 |
B42D15/02;B41J2/01;B41J29/00;B41J29/40;B41M5/00;B41M5/50;B41M5/52;C09D11/00;G06T1/00;(IPC1-7):B41J2/01 |
主分类号 |
B42D15/02 |
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