Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1998-08-17
2000-05-16
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430523, 430531, 430607, 430613, 430614, 430621, 430623, G03C 1498
Patent
active
060635592
ABSTRACT:
A (photo)thermographic recording material according to the present invention comprising a thermosensitive element contains a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder (and optionally further including photosensitive silver halide), wherein the (photo)thermographic recording material is exclusive of polypyrrole/poly(styrene sulfonic acid) in an electrically-conductive layer and further contains a compound represented by formula (I) or a reaction product thereof with a polymer having active hydrogen atoms: ##STR1## where R.sup.1 and R.sup.3 independently represent hydrogen, a hydroxyalkyl group, an alkoxyalkyl group, an alkyl group, a --(C.dbd.O)R.sup.5 group or an alkenyl group; and R.sup.2 and R.sup.4 independently represent a hydroxyalkyl group, an alkoxyalkyl group, an alkyl group, a --(C.dbd.O)R.sup.5 group or an alkenyl group; or R.sup.1 and R.sup.2 together and R.sup.3 and R.sup.4 together independently represent the atoms needed to close a carbocyclic or heterocyclic ring; R.sup.5 represents an aryl, a substituted aryl, an alkyl or a substituted alkyl group; and Z represents the atoms needed to complete a 5 ring-atom or 6 ring-atom hetero-aromatic ring; and a production process therefor.
REFERENCES:
patent: 5576163 (1996-11-01), Anderson et al.
patent: 5674654 (1997-10-01), Zumbulyadis et al.
"Stabilizer Compound for Dye Enhanced Photothermographic Material" by Tan et al. Research Disclosure, vol. 169, No. 16979, May 1978, Havant GB, pp. 66-67, XP002063608.
Hoogmartens Ivan
Uyttendaele Carlo
AGFA-GEVAERT
Chea Thorl
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