发明名称 |
Hidden entry system and image-developing device therefor |
摘要 |
A hidden entry system comprises a document having a first substrate bearing a localized latent image spaced apart from a removable image-developing device comprising a second substrate having a first surface and a second surface, the first surface of the second substrate bearing a chromogenic composition comprising an image-forming co-reactant, the image-forming co-reactant being a chromogen or a color developer, the second surface of the second substrate bearing a pressure-sensitive adhesive. The image developing device is in superposed relation with the first substrate with the pressure sensitive coating being releasably attached to the first substrate.
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申请公布号 |
US5484169(A) |
申请公布日期 |
1996.01.16 |
申请号 |
US19950390568 |
申请日期 |
1995.02.17 |
申请人 |
WALLACE COMPUTER SERVICES, INC. |
发明人 |
CHANG, JOHN C. H.;HOFFMANN, DONALD |
分类号 |
B42D15/02;(IPC1-7):B42D15/00 |
主分类号 |
B42D15/02 |
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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