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
1991-11-20
1993-04-27
Schwartz, Pamela R.
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...
106 21R, 427151, 430200, 503204, 503209, 503211, 503212, 503218, 503221, B41M 530
Patent
active
052062082
ABSTRACT:
The addition, to a thermal imaging medium comprising a color-forming compound which undergoes a change of color upon heating above a color-forming temperature for a color-forming time, the color-forming
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Baker Rita S. Shon
Liang Rong C.
Schwarzel William C.
Short Robert P.
Sofen Stephen R.
Cole David J.
Polaroid Corporation
Schwartz Pamela R.
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