Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Reexamination Certificate
2005-06-07
2005-06-07
Schilling, Richard L. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
C430S611000, C430S964000, C430S965000
Reexamination Certificate
active
06902880
ABSTRACT:
A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one stabilizer selected from the group consisting of 1-(5-mercapto-1-tetrazolyl)-acetyl compounds represented by formula (I):wherein R1is —NR2R3, —OR4or an optionally substituted aryl or heteroaryl group; R2is hydrogen or an optionally substituted alkyl, aryl or heteroaryl group; R3is an optionally substituted aryl or heteroaryl group; and R4is an optionally substituted aryl group; and compounds with two or more groups represented by formula (II):where Q comprises the necessary atoms to form a 5- or 6-membered unsaturated heterocyclic ring, A is hydrogen, a counterion to compensate the negative charge of the thiolate group or two or more A groups provide a linking group between the two or more groups represented by formula (II).
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Search Report for EP 02 10 2586 (Feb. 27, 2003).
Geuens Ingrid
Loccufier Johan
AGFA-Gevaert
Leydig , Voit & Mayer, Ltd.
Schilling Richard L.
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