Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Heavy metal reactant
Reexamination Certificate
2006-11-14
2006-11-14
Hess, B. Hamilton (Department: 1774)
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Heavy metal reactant
C427S150000
Reexamination Certificate
active
07135432
ABSTRACT:
Non-photosensitive direct thermographic materials comprise a reducing agent that is a specific ortho-amino-phenol, para-amino-phenol, or hydroquinone compound. These compounds can reduce silver(I) ion to metallic silver to produce a dense black silver image under the short time and high temperature conditions that occur when using thermal print-heads during direct thermal printing. The materials are characterized by their calculated aqueous deprotonation and their calculated anion HOMO energies.
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Cowdery-Corvan Peter J.
Ishida Takuzo
Olson Leif P.
Sakizadeh Kumars
Whitcomb David R.
Eastman Kodak Company
Hess B. Hamilton
Leichter Louis M.
Tucker J. Larry
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