Canon Kabushiki Kaisha

Katsuya Nishino

Masao Suzuki

Tetsuro Fukui

Kenji Kagami

Motokazu Kobayashi

Kazunori Ueno

Takehiko Ooi

Miki Tamura

Tetsuya Higuchi

Takehiko Ohi

Kobayashi Motokazu

Hiromi Ueda

A dry process silver salt photosensitive material has a support and provided thereon a photosensitive layer containing at least an organic silver salt, a reducing agent and a photosensitive silver halide or a photosensitive silver halide forming component. The photosensitive layer is incorporated with a compound selected from the compounds (i), (ii) and (iii).

Dry process silver salt photosensitive material and image forming method

A dry process silver salt photosensitive material is disclosed which has a support and a photosensitive layer. The photosensitive layer contains at least a photosensitive silver halide or photosensitive silver halide forming component, an organic silver salt and a pyrrole compound. The photosensitive material has a broad latitude for heat development and can form images with a high contrast.

A heat-developable photosensitive material including a photosensitive layer formed on a support, the photosensitive layer at least containing an organic silver salt, a reducing agent, either a photosensitive silver halide or a photosensitive silver halide forming agent, and a sensitizing dye of the following general formula (I): ##STR1## where r is hydrogen, halogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkoxyl, substituted or unsubstituted aryl or substituted amino; r.sup.1 and r.sup.2 are each substituted or unsubstituted aryl or r.sup.1 and r.sup.2 are bonded to each other to form a condensed ring; r.sup.3, r.sup.4 and r.sup.5 are each hydrogen, substituted or unsubstituted alkyl, alkenyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl; X.sup.1 is oxygen, sulfur, carbon, nitrogen or selenium, wherein when X.sup.1 is carbon or nitrogen, then X.sup.1 is bonded to hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl; X.sup.2 is oxygen or sulfur; X.sup.3 is oxygen or sulfur; and n is 2. A polymerizable polymer precursor and a light polymerization initiator may also be employed in the material.

Heat developable photosensitive material and image forming method which

A heat developing photosensitive member including: a photosensitive layer containing at least an organic silver salt, a reducing agent and a photosensitive silver halide or a photosensitive silver halide forming agent; and a supporting member for supporting the photosensitive layer thereon, wherein merocyanine dye having a structure in which a thiazole nucleus or selenazole nucleus and hydantoin nucleus, thiohydantoin nucleus or selenohydantoin nucleus are combined with each other by a combining group having a methine group is contained in the photosensitive layer.

Thermal developing photosensitive member and image forming method using

A heat-developable photosensitive material is disclosed which has a support and a photosensitive layer containing at least an organic silver salt, a silver halide and a reducing agent, a water-soluble polymeric layer containing a water-soluble polymeric material, and a hydrophobic polymeric layer containing a hydrophobic polymeric material.

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Hiratsuka, Japan

Katsuya Nishino