Invisible ink and scratch pad
作者： Terry W. Stovold , JoAnn Domanski
DOI:
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摘要: An invisible ink, a method for preparing an and ink product are disclosed herein. comprising first combined with second is applied to print medium. The comprises color developer activator without former leuco dye the activator. prepared polyvinyl alcohol binder, dispersant/surfactant, wetting agent. grind aid, dispersant/surfactant defoamer. Heat generated by rubbing and/or scratching on medium activates change printing
lens.org 参考文章(67)
Hubertus Psaar, Roderich Raue, Hans-Peter Kuhlthau, Pressure-sensitive recording material ,(1978)
Roger J. Lenkoff, Combined sticker and invisible ink game ,(1996)
Mitsuru Kondo, Makoto Miyake, Kiyoshi Yasui, Hiroshi Iwasaki, Process for preparing benzophenone derivatives ,(1979)
Antoine August De Jaeger, Albert Lucien Poot, Raymond Gerard Lemahieu, Wilhelmus Janssens, Pressure-sensitive recording materials ,(1973)
Robert E. Miller, Robert W. Brown, Paul S. Phillips, Single coating record system-solvent loss produces color ,(1974)
Henn Ruus, Method of encapsulation ,(1962)
Michael F. Stevens, Self-contained pressure-sensitive record material and process of preparation ,(1978)
Mark Dotson, Rajendra Mehta, Rick L. Shields, High solids direct thermal ink composition and method of making and using same ,(1996)
Thomas J. Landis, Mix and match invisible ink game ,(1991)
Jean-Claude Petitpierre, Robert Garner, John Barry Henshall, Coated pressure-sensitive recording material ,(1975)