Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Method of use – kit – or combined with marking instrument or...
Patent
1994-07-06
1995-11-28
Hess, B. Hamilton
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Method of use, kit, or combined with marking instrument or...
503216, 503225, B41M 530
Patent
active
054708168
ABSTRACT:
In a thermal recording sheet having a thermal recording layer containing a colorless or pale colored dye precursor and a color developer reactable with the dye precursor upon heating to develop a color, a dimerized or trimerized urea compound is used as the color developer to obtain a thermal recording sheet which is superior in ground color stability and a thermal recording sheet having a reversible recordability.
REFERENCES:
patent: 5260253 (1993-11-01), Kawakami et al.
Rewritable Thermal Recording Material, Yasuro Yokota et al. Mitsubishi Paper Mills Ltd., Tukuba Res. Labs, 46 Wadai, Tsukuba, Ibaraki, 300-42 Japan.
Recent trends of reuse of recording paper and reversible recording media, Eiichi Kawamura, Chemical Products R & D Center Ricoh Company, Ltd.
Hayasaka Hideki
Nagai Tomoaki
Satake Toshimi
Takano Toshiyuki
Uehori Yukiko
Hess B. Hamilton
Nippon Paper Industries Co. Ltd.
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