Dye image forming photographic elements

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

430544, 430567, 430957, 430955, G03C 1035, G03C 7305

Patent

active

053567641

ABSTRACT:
A color photographic element having a support bearing at least one radiation sensitive emulsion layer comprising dispersing medium and silver halide grains is disclosed. The emulsion layer is a tabular grain silver halide emulsion layer Wherein at least 50 percent of total grain projected area is accounted for by tabular grains (a) bounded by {100} major faces having adjacent edge ratios of less than 10, (b) each having an aspect ratio of at least 2, and (c) internally at their nucleation site, containing iodide and at least 50 mole percent chloride. The emulsion layer has in reactive association an image dye-forming compound and a compound that contains a photographically useful group and is capable of reacting with oxidized developing agent to thereby release such group. A process for preparing the radiation sensitive tabular grain silver halide emulsions is also described.

REFERENCES:
patent: 4063951 (1977-12-01), Bogg
patent: 4248962 (1981-02-01), Lau
patent: 4386158 (1983-05-01), Mignot
patent: 4399215 (1983-08-01), Wey
patent: 4400463 (1983-08-01), Maskasky
patent: 4409323 (1983-10-01), Sato et al.
patent: 4414306 (1983-11-01), Wey et al.
patent: 4713323 (1987-12-01), Maskasky
patent: 4783398 (1988-11-01), Takada et al.
patent: 4804621 (1989-02-01), Tufano et al.
patent: 4861701 (1989-08-01), Burns et al.
patent: 4942120 (1990-07-01), King et al.
patent: 4960689 (1990-10-01), Nishikawa et al.
patent: 4983508 (1991-01-01), Ishiguro et al.
patent: 5217858 (1993-06-01), Maskasky
Endo & Okaji, "An Empirical Rule to Modify the Habit of Silver chloride to form Tabular Grains in an Emulsion", The Journal of Photographic Science, vol. 36, pp. 182-188, 1988.
Mumaw & Haugh, "Silver Halide Precipitation Coalescence Processes", Journal of Imaging Science, vol. 30, No. 5, Sep./Oct. 1986, pp. 198-209.
Symposium: Torino 1963, Photographic Science, Edited by C. Semerano and U. Mazzucato, Focal Press, pp. 52-55.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Dye image forming photographic elements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dye image forming photographic elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dye image forming photographic elements will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2371570

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.