Claims
- 1. Photographic recording material consisting of a layer substrate and at least two silver halide emulsion layers which are sensitive to different regions of the visible spectrum, at least one of which layers contains a silver halide emulsion, hereinafter referred to as type I silver halide emulsion, which releases a development inhibitor on development of the photographic material, and at least one of which layers contains a silver halide emulsion, hereinafter referred to as type II silver halide emulsion, which is capable of being inhibited by the aforesaid inhibitor,
- wherein the emulsion grains of the type II silver halide emulsion are more easily soluble than the emulsion grains of the type I emulsion and
- the type II emulsion is not ripened to full sensitivity whereby after its application to a layer substrate and 6 minutes' development at 30.degree. C. in an aqueous developer containing, per liter, 2 g of ethylene diaminotetracetic acid, 0.3 g of 1-phenyl-3-pyrazolidone, 50 g of sodium sulphite, 6 g of hydroquinone, 35 g of sodium carbonate, 215 g of potassium thiocyanate, 2 g of potassium bromide and 0.015 g of potassium iodide, it has a degree of fogging of at the most 25%, the degree of fogging being defined by the quantity of silver, calculated as silver nitrate, and multiplied by 100, situated on the layer substrate after development and fixing divided by the quantity of silver, calculated as silver nitrate, situated on the layer substrate before development.
- 2. Photographic material according to claim 1, wherein the type I emulsion contains more silver iodide than the type II emulsion.
- 3. Photographic material according to claim 1, wherein the type I emulsion contains more silver iodide in addition to silver bromide than the type II emulsion.
- 4. Photographic material according to claim 1, wherein the average grain diameter of the silver halide grains of the type II emulsion is smaller than the average grain diameter of the silver halide grains of the type I emulsion.
- 5. Photographic recording material according to claim 1, wherein at least one of the silver halide emulsion layers contains a coupler which produces a dye or a white coupler.
- 6. Photographic recording material according to claim 1, wherein it is a recording material for the production of reversal images.
- 7. Photographic recording material according to claim 1, wherein at least one of the type I emulsions has an iodide content of from 1 to 10 mol %.
- 8. Photographic recording material according to claim 1 wherein at least one of the type II emulsions has an iodide content of from 0 to 6 mol %.
- 9. Photographic recording material according to claim 1 wherein at least one of the type I emulsions has an iodide content of from 4 to 8 mol %.
- 10. Photographic recording material according to claim 1, wherein at least one of the type II emulsions has an iodide content of from 0 to 3 mol %.
- 11. Photographic recording material according to claim 1, wherein the degree of fogging of the type II emulsion is at the most 10%.
- 12. Photographic recording material according to claim 1, wherein the type I emulsions and type II emulsions are contained in separate silver halide emulsion layers.
- 13. Photographic recording material according to claim 1, wherein the type I silver halide emulsions and the type II silver halide emulsions are present in the same emulsion layer.
- 14. Photographic recording material according to claim 1, wherein the type I silver halide emulsions and the type II silver halide emulsions are present both in separate silver halide emulsion layers and in the same silver halide emulsion layer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2718437 |
Dec 1977 |
DEX |
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CROSS-REFERENCE TO PARENT APPLICATION
This application is a continuation of pending application Ser. No. 898,626 filed Apr. 21, 1978 for Photographic Material With Interimage Effect, now abandoned.
US Referenced Citations (6)
Continuations (1)
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Number |
Date |
Country |
Parent |
898626 |
Apr 1978 |
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