Direct positive photographic material

Claim 1

A direct positive photographic material comprising a layer containing an internal latent image type light-sensitive silver halide emulsion that has not been fogged coated on a support, said material containing a compound represented by the general formula (I) or (II): General formula (I) ##STR15## General Formula (II) ##STR16## wherein R 1 represents a hydrogen atom, a hydroxyl group or an alkyl, alkenyl, alkoxy, acyloxy, aralkyl or aryl group which is substituted or unsubstituted; R 2 , R 3 and R 4 each represent a hydrogen atom, a halogen atom, --SO 2 R 7 , --COR 8 , or an alkyl, alkenyl, alkoxy, aralkyl or aryl group which is substituted or unsubstituted; R 5 represents a hydrogen atom, --COR 7 or --SO 2 R 7 and when n is 2 or 3, R 5 may be same or different; R 6 represents a hydrogen atom, a halogen atom or an alkyl, alkoxy, aryl or alkenyl group which may be substituted, and when m is 2, R 6 may be same or different; Z represents an atomic group necessary to complete a 5 to 7-membered alkylene ring, or a chroman or coumaran ring by fusing together with benzene ring, and Z may have a spyro carbon atom; R 7 represents a hydroxyl group, or an alkyl, alkoxy, aryloxy or amino group which is substituted or unsubstituted; n is 2 or 3; m is a number obtained by subtracting n from 4; and R 8 represents hydrogen atom, hydroxyl group, or an alkyl, alkoxy, aryloxy or amino group which is substituted or unsubstituted, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is not hydrogen atoms at the same time.

Claim 7

A method for forming a direct positive image comprising effecting surface development after and/or during fogging treatment of an imagewisely exposed direct positive photographic material comprising a layer containing an internal latent image type light-sensitive silver halide emulsion that has not been fogged coated on a support, said material containing a compound represented by the general formula [I] or [II]: General formula [I] ##STR26## General formula [II] ##STR27## wherein R 1 represents a hydrogen atom, a hydroxyl group or an alkyl, alkenyl, alkoxy, acyloxy, aralkyl or aryl group which is substituted or unsubstituted; R 2 , R 3 and R 4 each represent a hydrogen atom, a halogen atom, --SO 2 R 7 , --COR 8 , or an alkyl, alkenyl, alkoxy, aralkyl or aryl group which is substituted or unsubstituted; R 5 represents a hydrogen atom, --COR 7 or --SO 2 R 7 and when n is 2 or 3, R 5 may be same or different; R 6 represents a hydrogen atom, a halogen atom or an alkyl, alkoxy, aryl or alkenyl group which may be substituted, and when m is 2, R 6 may be some or different; Z represents an atomic group necessary to complete a 5 to 7-membered alkylene ring, or a chroman or coumaran ring by fusing together with benzene ring, and Z may have a spyro carbon atom; R 7 represents a hydroxyl group, or an alkyl, alkoxy, aryloxy or amino group which is substituted or unsubstituted; n is 2 or 3; m is a number obtained by subtracting n from 4; and R 8 represents hydrogen atom, hydroxyl group, or an alkyl, alkoxy, aryloxy or amino group which is substituted or unsubstituted, with the proviso that at least one of R 1 , R 2 , R 3 , and R 4 is not hydrogen atoms at the same time.

Claim 8

A method for forming a direct positive image comprising effecting surface development after and/or during fogging treatment of an imagewisely exposed direct positive photographic material comprising a layer containing an internal latent image type light-sensitive silver halide emulsion that has not been fogged coated on a support, said material containing a compound represented by the general formula [I] or [II]: General formula [I] ##STR26## General formula [II] ##STR27## wherein R 1 represents a hydrogen atom, a hydroxyl group or an alkyl, alkenyl, alkoxy, acyloxy, aralkyl or aryl group which is substituted or unsubstituted; R 2 , R 3 and R 4 each represent a hydrogen atom, a halogen atom, --SO 2 R 7 , --COR 8 , or an alkyl, alkenyl, alkoxy, aralkyl or aryl group which is substituted or unsubstituted; R 5 represents a hydrogen atom, --COR 7 or --SO 2 R 7 and when n is 2 or 3, R 5 may be same or different; R 6 represents a hydrogen atom, a halogen atom or an alkyl, alkoxy, aryl or alkenyl group which may be substituted, and when m is 2, R 6 may be some or different; Z represents an atomic group necessary to complete a 5 to 7-membered alkylene ring, or a chroman or coumaran ring by fusing together with benzene ring, and Z may have a spyro carbon atom; R 7 represents a hydroxyl group, or an alkyl, alkoxy, aryloxy or amino group which is substituted or unsubstituted; n is 2 or 3; m is a number obtained by subtracting n from 4; and R 8 represents hydrogen atom, hydroxyl group, or an alkyl, alkoxy, aryloxy or amino group which is substituted or unsubstituted, with the proviso that at least one of R 1 , R 2 , R 3 , and R 4 is not hydrogen atoms at the same time.