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
1997-08-05
2000-01-18
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...
503204, 503226, B41M 536
Patent
active
060157704
ABSTRACT:
A reversible thermosensitive recording material which has a substrate and a recording layer formed on the substrate and in which the recording layer assumes a first color state at a first coloring temperature higher than room temperature when the recording layer is heated by applying heat energy in a first color recordable energy range and in which the recording layer then assumes a second color state when heated at a second coloring temperature higher than the first coloring temperature and then cooled, wherein provided that an initial first color recordable energy range is E.sub.1 and a changed first color recordable energy range of the recording material which has been preserved at 35.degree. C. for 48 hours is E.sub.D, a changing rate E.sub.c of a first color recordable energy range, i.e., 100(E.sub.1 -E.sub.D)/E.sub.1, is less than about 35%.
Amano Tetsuya
Hotta Yoshihiko
Morohoshi Kunichika
Suzuki Kazumi
Hess Bruce H.
Ricoh & Company, Ltd.
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