Photosensitive material and process for developing the same
AssigneeKimoto Co., Ltd.
InventorsTakeo Moriya, Toshio Yamagata
Life of this patent
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Abstract
A positive-working photosensitive material and a process for developing the same are disclosed. The positive-working photosensitive material is obtained by forming on a base material a layer of a photosensitive composition containing (A), 100 weight parts of a resin binder including a vinylic polymer compound having phenolic hydroxyl groups and (B), 3-30 weight parts of an aromatic diazonium salt having only a single diazo group. The positive-working photosensitive material is developed by using an aqueous alkali solution.
Claims7
A positive-working photosensitive material comprising:
- (1) a base material and (2) a layer of photosensitive composition formed on said base material and comprising (A), 100 weight parts of a resin binder containing at least 50 weight % of a vinylic polymer compound having an average polymerization degree of 300-2600 and represented by the general formula:
- ##STR6## wherein R represents hydrogen, hydroxyl, carboxyl, alkyl, alkoxyl, aryl, nitro, amino or halogen;
- and having a copolymerization ratio of x:y:z of 5-50:5-85:10-60 and (B), 3-30 weight parts of an aromatic diazonium salt having only a single diazo group.
A process for developing a positive-working photosensitive material comprising:
- providing a base material;
- forming on said base material a layer of a photosensitive composition comprising (A), 100 weight parts of a resin binder containing at least 50 weight % of a vinylic polymer compound having an average polymerization degree of 300-2600 and represented by the general formula:
- ##STR7## wherein R represents hydrogen, hydroxyl, carboxyl, alkyl, alkoxyl, aryl, nitro, amino or halogen;
- and having a copolymerization ratio of x:y:z of 5-50:5-85:10-60 and (B), 3-30 weight parts of an aromatic diazonium salt having only a single diazo group;
- bringing said positive-working photosensitive material into intimate contact with a positive manuscript;
- exposing said positive-working photosensitive material to radiation through said manuscript;
- and
- developing said exposed material by contact with an alkali developer to obtain a positive relief image.
Dependencies are inferred from the claim text.