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US 5,691,126 AGranted
Class of yellow dyes for use in photographic materials
AssigneeAgfa-Gevaert
InventorsEric Kiekens, Antonius Van Gils, Roland Claes
Life of this patent
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Abstract
A new class of dyes useful in photographic materials as antihalation dyes, filter dyes or acutance dyes is disclosed. The dyes absorb in the spectral region 450-500 nm and are especially useful in photographic materials designed for recording by means of an Ar ion laser.
Claims5
Photographic material containing at least one silver halide emulsion layer and optionally one or more non-light sensitive layer(s) characterized in that at least one of those layers contains a dye represented by general formula (I):
- ##STR5## wherein, X represents --N(R.sup.1 R.sup.2) or --OH, wherein each of R.sup.1 and R.sup.2 represents substituted or unsubstituted alkyl or aryl, or the necessary atoms to form a fused-on aromatic ring,
- each of Y and Z independently represents hydrogen or one or more substituent(s),
- R.sup.3 represents alkylene, which may be substituted, and
- n=0 or 1.
1 more element
Dependencies are inferred from the claim text.