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
1995-06-01
1997-03-18
Hess, Bruce H.
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...
430338, 430340, 503209, 503216, B41M 530, G03C 1725
Patent
active
056122799
ABSTRACT:
In an optical 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 an optical recording sheet which is superior in ground color stability and an optical recording sheet having a reversible recordability.
REFERENCES:
patent: 5260253 (1993-11-01), Kawakami et al.
patent: 5470816 (1995-11-01), Satake 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 Bruce H.
Nippon Paper Industries, Ltd.
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