发明名称 |
Latent image printing process and apparatus and substrate therefor |
摘要 |
A latent image printing method and apparatus uses a substrate with one main surface having a covering comprising only one of a first pair of a color developer and color former dye in at least one selected latent imaging area defining a background color in conjunction with the one main surface, wherein the color developer and the color former dye react when mixed to produce a first spectral response which is visible relative to the background color and a continuous coating over the covering which is non-porous with respect to the other of the pair and solvent-resistant to the other of the pair. The coating above selected portions of the covering corresponding to a desired latent image is removed.
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申请公布号 |
US5750462(A) |
申请公布日期 |
1998.05.12 |
申请号 |
US19940360860 |
申请日期 |
1994.12.21 |
申请人 |
NOCOPI TECHNOLOGIES, INC. |
发明人 |
GUNDJIAN, ARSHAVIR |
分类号 |
B41M5/28;B41M1/34;B41M3/00;B41M3/14;B41M5/124;B41M5/165;B41M5/24;B41M5/30;B41M5/36;B41M5/40;(IPC1-7):B41M5/30 |
主分类号 |
B41M5/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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