Heat development duplicating material comprising ascorbic acid
AssigneeFuji Photo Film Co., Ltd.
InventorHirokazu Shimada
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Abstract
A heat development type duplicating material having a recording layer which is formed on a support. The recording layer comprises a photosensitive diazo compound and a coupler that reacts with the diazo compound to develop color. Furthermore, the duplicating material contains an ascorbic acid derivative. The heat development type duplicating material generates little stain in background areas, exhibits satisfactory storage stability, and provides a high image density.
Claims11
A heat developable duplicating material comprising a support having thereon a recording layer which comprises a photosensitive diazo compound and a coupler that reacts with the diazo compound to develop a color, wherein the duplicating material contains from 0.001 to 0.1 g/m.sup.2 of an ascorbic acid derivative represented by the following general formula:
- ##STR4## wherein R represents a hydrogen atom, an alkyl group or an alkylcarbonyl group;
- and M represents a hydrogen atom or an alkali metal atom.
Dependencies are inferred from the claim text.