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...
Reexamination Certificate
2005-11-01
2008-11-18
Hess, Bruce H (Department: 1794)
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...
C428S064400, C430S945000, C503S209000, C503S216000, C503S226000
Reexamination Certificate
active
07452847
ABSTRACT:
A reversible thermosensitive recording medium including a substrate, and a thermosensitive layer including an electron donating coloring compound, an electron accepting compound, and a phenol anti-oxidation agent containing one or more sulfur atoms having an alkyl group on one side. In addition, the thermosensitive layer reversibly changes its color tone depending on temperature to reversibly record and erase an image thereon.
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Arai Satoshi
Kuboyama Hiroki
Sampei Satoru
Tatewaki Tadafumi
Cooper & Dunham LLP
Hess Bruce H
Ricoh & Company, Ltd.
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