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
2006-03-16
2009-06-30
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...
C346S135100, C503S214000, C503S216000, C503S226000, C564S443000
Reexamination Certificate
active
07553796
ABSTRACT:
The present invention provides a reversible thermosensitive recording medium including a support and a thermosensitive recording layer thereon, in which the thermosensitive recording layer contains an electron-donating coloring compound and an electron-accepting compound, and the thermosensitive recording layer is capable of forming a relatively developed condition and a relatively erased condition depending on at least one of the difference of heating temperatures and the difference of cooling rates following to heating, and in which the electron-accepting compound contains a phenol compound expressed by General Formula (1):where, in the General Formula (1), “l” represents an integer of 1 to 3 and “m” represents an integer of 23 or more.
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Feb. 24, 2009 European search report in connection with a counterpart European patent Application No. 06 72 9734.
Furuya Hiromi
Okada Kyohji
Tsutsui Kyoji
Yamamoto Satoshi
Cooper & Dunham LLP
Hess Bruce H
Ricoh & Company, Ltd.
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