Claims
- 1. A color negative photographic recording material containing a support and at least two silver halide emulsion imaging units sensitive to different regions of the electromagnetic spectrum, each unit containing a dye forming coupler, at least one unit is a high tabularity unit which:
- a) comprises from 0.2 to 2.0 g/m.sup.2, based on silver, of a silver halide emulsion wherein greater than 50% of the projected area of the grains is provided by tabular grains having a tabularity of between 50 and 25,000;
- b) has a thickness of less than about 4.0 .mu.m;
- c) comprises no more than 2.0 parts by weight of silver per part by weight of coupler;
- d) has an exposure latitude of 2.0 or greater; and
- e) yields a maximum image dye density of at least 2.0, and a positive contrast of 0.9 or less when the recording material is exposed and processed; and at least one of the silver halide emulsion imaging units contains, in addition to the dye forming coupler, a masking coupler.
- 2. The recording material of claim 1 wherein the tabular grains have a tabularity of between 100 and 5,000.
- 3. The recording material of claim 1 wherein the tabular grains have a tabularity of between 100 and 2,500.
- 4. The recording material of claim 1 wherein said high tabularity unit comprises at least two silver halide emulsion layers having different sensitivities to the same region of the spectrum.
- 5. The recording material of claim 4 wherein the more sensitive layer comprises from 0.10 to 1.0 g/m.sup.2 of silver.
- 6. The recording material of claim 4 wherein the more sensitive layer comprises from 0.20 to 0.6 g/m.sup.2 of silver.
- 7. The recording material of claim 1 wherein there is from 0.8 to 1.5 part of silver per part of coupler in the high tabularity unit.
- 8. The recording material of claim 1 wherein there is from 0.5 to 1 part of silver per part of coupler in the high tabularity unit.
- 9. The recording material of claim 1 wherein the unit thickness of the high tabularity unit is from 2.5 to 3.5 .mu.m.
- 10. The recording material of claim 1 which comprises at least 3 silver halide imaging units sensitive to different regions of the spectrum.
- 11. The recording material of claim 1 wherein the tabular grains comprise at least one of silver bromide or silver bromoiodide.
- 12. The recording material of claim 1, wherein the high tabularity unit is a cyan dye forming unit or a magenta dye forming unit.
Parent Case Info
This is a divisional of application Ser. No. 827,857, filed Jan. 30, 1992 now U.S. Pat. No. 5,219,715, which is a continuation of Ser. No. 589,159, filed Sep. 27, 1990, abandoned, which is a continuation-in-part of U.S. Ser. No. 419,177, filed Oct. 10, 1989, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0062202 |
Oct 1982 |
EPX |
0311104 |
Apr 1989 |
EPX |
63-118157 |
May 1988 |
JPX |
63-226651 |
Sep 1988 |
JPX |
Non-Patent Literature Citations (3)
Entry |
Photographic Science, Mitchell, 1984, pp. 194-195. |
Photographic Materials and Processes, Stroebel et al., 1986, pp. 533-536. |
Negatives from Ektachrome, PSA Journal, Dec. 1962, pp. 40-41. |
Divisions (1)
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Number |
Date |
Country |
Parent |
827857 |
Jan 1992 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
589159 |
Sep 1990 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
419177 |
Oct 1989 |
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