Development processing method of silver halide black-and-white photographic material

A development processing method of a silver halide black-and-white photographic material, which comprises the steps of

• (a) exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, and
• (b) developing the exposed silver halide photographic material with a developer,
• wherein at least one layer of the light-sensitive silver halide emulsion layer and a hydrophilic colloid layer contains at least one hydrazine derivative represented by the following formula (I);
• the developer contains substantially no dihydroxybenzene compound;
• and
• the developer contains (1) at least one developing agent selected from ascorbic acid, erythorbic acid and alkali metal salts thereof, (2) a developing agent represented by the following formula (II) in an amount of from 5.times.10.sup.-3 to 0.5 mol per liter of the developer, and (3) an auxiliary developing agent exhibiting a superadditive property:
• ##STR16## wherein R.sub.1 represents an aliphatic group or an aromatic group;
• R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an unsaturated heterocyclic group, an alkoxy group, an aryloxy group, an amino group or a hydrazino group;
• G.sub.1 represents --CO--, --SO.sub.2 --, --SO--, --PO(R.sub.3)--, --CO--CO--, a thiocarbonyl group or an iminomethylene group;
• A.sub.1 and A.sub.2 are both a hydrogen atom, or one of them is a hydrogen atom and the other is an alkylsulfonyl group, an arylsulfonyl group or an acyl group;
• R.sub.3 has the same meaning as R.sub.2, but it may be different from R.sub.2 :
• ##STR17## wherein X represents a hydrogen atom, an aryl group, a heterocyclic group or a group represented by the following formula (A):
• ##STR18## wherein R.sub.4, R.sub.5 and R.sub.6 are the same or different and each represents a hydrogen atom or a substituent other than a hydroxyl group.