Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support having positioned thereon a silver halide emulsion layer and a compound represented by the general formula (I): ##STR1## wherein R is a halogen atom or an alkyl group and n is 1, 2 or 3 and when n is 2 or 3 each R may be the same or different. Utilization of the compound represented by the general formula (I) aids in the elimination of the generation of fog without creating undesirable influences on the photographic properties of the material.

Abstract: A silver halide photographic light-sensitive material and a developing process used in connection with that material are disclosed. The material is comprised of a support having thereon a silver halide emulsion layer containing a silver halide emulsion in which at least 80 mole % of the whole silver halide is composed of silver chloride, the mean grain size thereof is less than 0.4 .mu.m, and which contains more than 1.times.10.sup.-6 mole of a water-soluble rhodium salt per mole of silver at an optional period before finishing the first ripening in the production step for the silver halide emulsion. The material also contains 1.times.10.sup.-5 to 1.times.10.sup.-2 mole of polyalkylene oxide having a molecular weight of at least 600 or a derivative thereof per mole of silver. The process involves imagewise exposing the material and processing it in a developer containing 0.05 to 0.5 mole/liter of a dihydroxybenzene series developing agent, 0 to 0.05 g/liter of an auxiliary developing agent, at least 0.

Abstract: A method of forming negative dot images which comprises imagewise exposing through a contact screen a silver halide photographilic light-sensitive material of substantially the surface latent image type containing in a silver halide emulsion layer or another hydrophilic colloidal layer(a) a hydroquinone developing agent, and(b) a compound represented by the formula, R.sup.1 NHNHCOR.sub.2, wherein R.sup.1 is an aryl group which may be substituted, and R.sup.2 is a hydrogen atom, an alkyl group which may be substituted, or an aryl group which may be substituted, and thereafter processing the thus exposed light-sensitive material with an activator aqueous solution having a pH of 11.5 or more.

Abstract: A method for forming a high contrast negative photographic image, which comprises imagewise exposing a photographic material comprising a support having thereon at least one photographic silver halide emulsion layer with the photographic silver halide emulsion layer or at least one hydrophilic colloid layer of the photographic material containing a compound of the general formula (I)R.sup.1 --NHNHCO--R.sup.2 (I)wherein R.sup.1 represents an aryl group, and R.sup.2 represents a hydrogen atom, a phenyl group, or an unsubstituted alkyl group containing 1 to 3 carbon atoms, and then developing the imagewise exposed material in the presence of a hydroquinone compound of the general formula (II) ##STR1## wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.6, which may be the same or different, each represents a hydrogen atom, a sulfo group, an alkyl group, an aryl group, an aralkyl group, a heterocyclic group, or a group of the formula --O--R.sup.7 or --S--R.sup.7 where R.sup.

Abstract: A photographic image-forming method comprising imagewise exposing a silver halide photographic light-sensitive element containing a specific hydroquinone derivative in the silver halide emulsion layer of substantially the surface latent image type or at least one hydrophilic colloid layer thereof and then developing the exposed light-sensitive element in the presence of a specific hydrazine compound. The method forms a photographic image having markedly high negative gradation.

Abstract: A silver halide photographic light-sensitive material is described, comprising at least one silver halide photographic emulsion layer, wherein at least one layer contains a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents hydrogen, an aliphatic group, an aromatic group, or a heterocyclic group;R.sup.3 represents hydrogen or an aliphatic group, andX represents a divalent aromatic group.The light-sensitive material provides high-contrast negative images and good dot image quality.

Abstract: A silver halide photographic material providing very high contrast and negative image photographic characteristics comprising a support having thereon at least one silver halide photographic emulsion layer containing substantially surface latent image type mono-dispersed silver halide grains and providing a negative image, at least one hydrophilic colloid layer of the photographic material containing a compound represented by the general formula (I)R.sup.1 NHNHCOR.sup.2 (I)whereinR.sup.1 represents an aryl group and R.sup.2 represents a hydrogen atom, a phenyl group, or an unsubstituted alkyl group having 1 to 3 carbon atoms;and a compound represented by the general formula (II) or (III) ##STR1## wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.

Abstract: A method of forming an extremely high-contrast negative photographic image which comprises image-wise exposing a photographic light-sensitive material comprising a support having thereon a mono-disperse silver halide emulsion layer containing surface latent image type silver halide grains and also containing a compound represented by the following general formula (1):R.sup.1 NHNHCOR.sup.2 (I)wherein R.sup.1 represents an aryl group, R.sup.2 represents a hydrogen atom, a phenyl group or an unsubstituted alkyl group having 1 to 3 carbon atoms, and then processing the exposed light-sensitive material in the presence of a compound having a thioamido moiety in the molecule thereof.

Abstract: A silver halide photographic light-sensitive material having at least one silver halide photographic emulsion layer comprising substantially surface latent image type silver halide grains, and containing in said photographic emulsion layer or at least one of other hydrophilic colloid layers a compound represented by the following general formula (I): ##STR1## wherein X.sup.1 represents a group containing a ##STR2## moiety, Ar.sup.1 and Ar.sup.2 each represents a substituted or unsubstituted aromatic group, B represents a divalent linking group, n is 0 or 1, and R.sup.1 represents a hydrogen atom, an unsubstituted alkyl group, or a substituted or unsubstituted aryl group.

Abstract: A silver halide photographic material providing very high contrast and negative image photographic characteristics comprising a support having thereon at least one silver halide photographic emulsion layer containing substantially surface latent image type mono-dispersed silver halide grains and providing a negative image, at least one hydrophilic colloid layer of the photographic material containing a compound represented by the general formula (I)R.sup.1 NHNHCOR.sup.2 (I)wherein R.sup.1 represents an aryl group and R.sup.2 represents a hydrogen atom, a phenyl group, or an unsubstituted alkyl group having 1 to 3 carbon atoms; and a compound represented by the general formula (II) or (III) ##STR1## wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.

Abstract: A process for forming a very contrasty negative photographic image which comprises developing a photographic light-sensitive material comprising a support having thereon at least one layer of a negative image monodispersed silver halide photographic emulsion comprising substantially surface latent image type silver halide grains, wherein the average grain size of the silver halide grains is 0.7 micron or less, with the silver halide photographic emulsion containing a binder in an amount of 250 g or less per mol of silver halide, and at least one hydrographic colloid layer containing a compound represented by the following general formula (I):R.sup.1 NHNHCOR.sup.2 (I)wherein R.sup.1 represents an aryl group and R.sup.2 represents a hydrogen atom, a phenyl group or an alkyl group having 1 to 3 carbon atoms, in the presence of a compound represented by the following general formula (II) or (III): ##STR1## wherein Z.sup.1 and Z.sup.

Abstract: A negative image silver halide photographic emulsion comprising substantially surface latent image type monodispersed silver bromide or silver iodobromide grains containing up to about 10 mol% silver iodide, wherein the average grain size of the silver halide grains is about 0.7 micron or less, with the silver halide photographic emulsion containing a binder in an amount of about 250 g or less per mol of silver halide and a compound represented by the following general formula (I):R.sup.1 NHNHCOR.sup.2 (I)wherein R.sup.1 represents an aryl group and R.sup.

Abstract: A process for producing a high contrast photographic image comprising developing an image-wise exposed silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer with a developer containing (a) free sulfite ion in a concentration of at least 0.18 mol/l and (b) as substantially the only developing agent a dihydroxybenzene in the presence of (i) at least one compound represented by the following general formula (I);R.sup.1 NHNHCOR.sup.2 (I)wherein R.sup.1 represents an aryl group; R.sup.2 represents a hydrogen atom, a phenyl group or an unsubstituted alkyl group having 1 to 3 carbon atoms and (ii) at least one polyalkylene oxide having a molecular weight of at least 600 or a derivative thereof.

Abstract: A negative image silver halide photographic emulsion comprising substantially surface latent image-type silver chlorobromide or silver chlorobromoiodide grains with an iodide content of up to about 7 mol%, wherein the mean grain size of the silver halide grains is not greater than about 0.7.mu., a binder is present in an amount of not more than about 250 g per mol of silver halide, and at least one compound represented by the following general formula (I):r.sup.1 nhnhcho (i)wherein R.sup.1 represents an aryl group.

Abstract: A silver halide photographic light-sensitive material containing at least one negative image silver halide photographic emulsion layer comprising silver halide grains that have an average grain size of not more than about 0.7 .mu. and are substantially of the surface latent image type and containing a binder in an amount of not more than about 250 g per mol of silver halide, and containing a compound represented by the following general formula (I):r.sup.1 nhnhcor.sup.2 (i)wherein R.sup.1 represents an aryl group; and R.sup.2 represents a hydrogen atom, a phenyl group or an unsubstituted alkyl group having 1 to 3 carbon atoms; in at least one of the hydrophilic colloid layers, and a compound represented by the following general formula (II) or (III): ##STR1## wherein Y represents a sulfur atom, a selenium atom, an oxygen atom, a nitrogen atom or a divalent residue; --NR.sup.4 --, wherein R.sup.