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| What is claimed is: 1. A compound of the formula ##STR13## wherein A is --CO-- or --CO--CO--; X is -... |
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| Aqueous ink for ink-jet printing |
| OF THE PREFERRED EMBODIMENTS An embodiment of an aqueous ink for ink-jet printing according to the ... |
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| Siloxane polyphotoinitiators of the substituted acetophenone type |
| OF THE INVENTION The inventive polyphotoinitiators are organopolysiloxanes having an average of at ... |
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| Photopolymerizable composition |
| OF THE INVENTION The polymerizable compound having an ethylenically unsaturated bond which can be ... |
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| Photocurable colored compositions employing alpha-amino phenone initiator |
| What is claimed is: 1. A photocurable coloured composition containing: (a) an olefinically ... |
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| Polymeric sensitizers for photopolymer composition |
| We claim: 1. A photopolymerizable composition consisting essentially of (A) at least one nongaseous ... |
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| Photopolymerizable composition containing a photosensitive donor and photoinitiating acceptor |
| OF THE INVENTION An important feature of the photoabsorbers used in the present invention is their ... |
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| Organic solvent-soluble photosensitive polyamide resin |
| We claim:
TABLE 3
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Heat developable photosensitive material
| Details |
Inventors: Masuda, Takao; Fujiwara, Itsuo; Aotani, Yoshimasa; Itoh, Isamu;
Assignee: Fuji Photo Film Co., Ltd. (Kanagawa, JP)
Primary Examiner: Louie, Jr.; Won H.
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas
A heat-developable photosensitive material is described comprising a heat-developable photosensitive layer containing at least an organic silver salt, a photocatalyst, and a reducing agent, wherein the improvement is an antihalation layer comprising a light bleachable colored composition composed of at least (1) a photosensitive halogen-containing compound, and (2) a merocyanine dye, provided on the opposite side of said heat-developable photosensitive layer with respect to the side intended for imagewise exposure. |
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DETAILED DESCRIPTION OF THE INVENTION As is described above, the antihalation layer of the present invention is provided on the opposite side of the heat-developable photosensitive layer with respect to the incident side to which imagewise exposing light is applied.
In greater detail, the light-bleachable colored composition layer composed of the components (1) and (2) is provided between the heat-developable photosensitive layer and the base or on the back of the base, or the light bleachable colored composition is added to the base so that the base itself has an antihalation ability.
The above described light bleachable colored composition layer is preferably formed by applying a dispersion of the components (1) and (2) in a suitable binder, but, if desired, it may be formed by applying a solution of the components (1) and (2) in a binderless state.
As the binder, it is possible to use the same kind of binder as that used for the heat-developable photosensitive layer, a protective coating layer, or a subbing layer.
It is preferred that the polymeric material as the binder be those which form a transparent or semitransparent colorless layer or membrane when they are applied.
Examples include protains such as gelatin, cellulose derivertives such as diacetyl cellulose, polysaccharides such as dextran and natural polymeric materials such as gum arabic, and synthetic polymeric materials described in U.
S.
Pat.
No.
4,009,039, and Japanese patent application (OPI) Nos.
12408/75, 29126/76, 19525/76 and 84443/74, examples include polyvinyl acetate, vinylidene chloride-vinylchloride copolymer, polyvinyl butyral, polymethyl methacrylate, vinylchloride-vinylacetate copolymer, polyvinyl alcohole, etc.
The antihalation layer of the present invention prevents halation by absorbing light passing through the heat-developable photosensitive layer during image exposure by the merocyanine dye included as the component (2) and becomes transparent (light-bleached) by decoloration of the merocyanine dye due to a function of a halogen radical or hydrohalogenic acid formed by light decomposition of the photosensitive halogen containing compound included as the component (1) by uniform light exposure after the heat development
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