Process for removing stain in a photographic material

A process according to any of the preceding claims in which n is 1 and R2 is CO—R3 in which R3 is C1-C3alkyl or phenyl.

A process for removing stain in a photographic material which process comprises incorporation of at least one compound of the formula (I) in combination with another optical brightener of the formula (II)

• 30
• wherein
• R6 to R9 may be the same different and each represents a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms such as a methoxy, ethoxy or methoxyethoxy group, an amino group, an alkylamino group having 1 to 6 carbon atoms such as methylamino, ethylamino, propylamino, dimethylamino, cyclohexyamino, di-(beta-hydroxyethyl)-amino, beta-sulfoethylamino, N-(beta-sulfoethyl)-N-methylamino or beta-carboxylethylamino group, an aryloxy group such as a phenoxy or p-sulfophenyl group, an arylamino group such as an anilio, o-, m- or p-sulfoanilino, o-, m- or p-chloranilino, o-, m- or p-toluidino, o-, m- or p-carboxyanilino, o-, m- or p-anisidino or o-, m- or p-hydroxyanilino group, or a halogen atom and M is a monovalent cation such as a sodium or potassium ion.

A photographic processing solution comprising at least one compound of formula (I).

A photographic paper comprising at least one compound of formula (I).