Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Reexamination Certificate
2007-07-31
2007-07-31
Chu, John S. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C430S302000, C430S271100, C430S278100, C430S303000
Reexamination Certificate
active
10852552
ABSTRACT:
The present invention provides an imageable member having an imageable layer including a heat-sensitive ionomer characterized by a net positive or negative charge, and a photothermal conversion material. The photothermal conversion material includes carbonaceous particles having thereon both an organic moiety including an ionic substituent having like charge as the ionomer, and a group represented by the formulain-line-formulae description="In-line Formulae" end="lead"?—X-[NIon]p-Rterminal;in-line-formulae description="In-line Formulae" end="tail"?wherein X represents an aromatic group or an alkyl group, NIon represents a non-ionic, non-ionizable group, Rterminalrepresents hydrogen, an aromatic group, an alkoxy group, or an alkyl group, and p is an integer from 1 to about 500. The heat-sensitive ionomer and modified carbonaceous particles can be formulated in water or water-miscible solvents without agglomeration. Imageable members utilizing the modified carbonaceous particles as a photothermal conversion material exhibit acceptable optical density and exposure speed, and imaged members made therefrom exhibit excellent background performance.
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“Glossary of Basic Terms in Polymer Science”, published by International Union of Pure and Applied Chemistry (IUPAC),Pure Appl. Chem.68, 2287-2311 (1996).
Leon Jeffrey W.
Miller Nicki R.
West Paul R.
Chu John S.
Eastman Kodak Company
Tucker J. Lanny
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