摘要:
A photographic element having a light sensitive layer and containing a dye of the formula (I): ##STR1## wherein: X.sub.1 and X.sub.2 each independently represents the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus; X.sub.3 represents the atoms necessary to form a 5- or 6-membered ring structure, which may be substituted; R.sub.1 and R.sub.2 each independently represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; R.sub.3 represents H, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; r and s independently are 0 or 1; and W represents one or more counterions as needed to balance the charge of the molecule.
摘要:
An antistatic composition comprises a hydrophilic colloid, e.g. gelatin, and a plurality of surface active agents comprising an anionic surface active agent and a cationic surface active agent. At least one of the anionic and cationic surface active agents comprises at least one polyoxyalkylene group. The accumulation of electrostatic charge on an element, e.g a photographic element, may be prevented by coating a surface of the element with an aqueous dispersion of the antistatic composition and drying the coated surface.
摘要:
A dye of the formula (I) below, and photographic elements having a light sensitive layer and which element contains such a dye: ##STR1## X.sub.1 and X.sub.2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus; x and y are, independently, integers from 0 to 3 provided x+y is no greater than 4; p and q each independently represents 0 or 1, each L independently represents a methine group; R.sub.1 and R.sub.2 each independently represents an alkyl group or an aryl group, and R.sub.3 represents an alkyl group, aryl group or heteroaryl group; W1 is a counterion as needed to balance the charge of the molecule.