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Photographic material with developer in AzX emulsion and sublayer
| Details |
Inventors: Shiba, Keisuke; Kubotera, Kikuo; Kashiwabara, Akira;
Assignee: Fuji Photo Film Co., Ltd. (Minami-ashigara, JP)
Primary Examiner: Kimlin; Edward C.
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Rothwell, Mion, Zinn and Macpeak
A silver halide photographic material comprising an aluminum support having thereon an anodized aluminum oxide layer and a light sensitive silver halide layer containing a silver halide developing agent thereon with a subbing layer containing at least either a silver halide or a developing agent suitable for a silver halide in an amount less than the quantity contained in the light-sensitive layer, which can be used to produce a relief image possessing high printing durability by successively receiving an image-wise exposure, an alkaline solution development, a washing-off and a drying. |
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DETAILED DESCRIPTION OF THE INVENTION Suitable examples of aluminum supports which can be used in the present invention include supports of pure aluminum and of aluminum alloys.
A variety of alloys can be used including these containing silicon, copper, manganese, magnesium, chromium, zinc, lead, bismuth, nickel, etc.
Some representative examples of suitable alloy compositions are shown in the following table.
In the table, the values given are percent by weight, with the remainder being aluminum.
______________________________________
Compositions of Typical Aluminum Alloys
Alloys No.
Si Cu Mn Mg Cr Zn
______________________________________
2S 0.
4 -- -- 0.
6 -- --
3S -- -- 1.
2 -- -- --
24S -- 4.
5 0.
6 1.
5 -- --
52S -- -- -- 2.
5 0.
25 --
61S 0.
6 0.
25 -- 1.
0 0.
25 --
75S -- 1.
60 -- 2.
50 0.
30 5.
60
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These compositions generally include, in addition, small amounts of Fe and Ti and negligible amounts of impurities not shown in the table.
The surface of an aluminum support is usually subjected to chemical cleaning such as a degreasing with solvents or alkaline agents, as described in detail in KINZOKU HYOMEN GIJUTSU BINRAN (A Handbook on Metallic Surfaces) p.
86-210, Nikkan Kogyo Shinbunsha, Tokyo (1969), for the purpose of exposing a clean surface free of grease, rust or dust which is usually present on the aluminum surface.
Depending on the requirement, the surface is grained.
Suitable graining methods which can be used include glass bead graining, ball graining, sand blasting, brush graining as described in Japanese Patent Application (OPI) No.
33411/73, electrolytic graining as described in Japanese Patent Application (OPI) No.
28123/73 and British Patent 896,563, etc.
Any of these methods can be employed, however, graining is not always necessary and a polished surface of aluminum can be used as the printing surface of an offset printing support, although a grained support for offset printing exhibits a better water retention, thus giving preferred printed materials
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