(19)
(11) EP 0 091 326 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.04.1984 Bulletin 1984/15

(43) Date of publication A2:
12.10.1983 Bulletin 1983/41

(21) Application number: 83303664

(22) Date of filing: 24.06.1983
(84) Designated Contracting States:
GB

(71) Applicant: EASTMAN KODAK COMPANY (a New Jersey corporation)
 ()

(72) Inventor:
  • VanHeyningen, Roger S. Research Laboratories
     ()

   


(54) Imaging with high aspect ratio tabular grain emulsions and nonplanar support elements


(57) A photosensitive element comprising a support and radiation-sensitive imaging means capable of undergoing as a function of at least one of photographic exposure and processing a change in the optical density or mobility of the imaging means is disclosed. The support provides a nonplanar surface pattern forming an array, and the imaging means includes a high aspect ratio tabular grain silver halide emulsion coprised of a dispersing medium and silver halide grains, wherein tabular silver halide grains having a thickness of less than 0.5 micron and a diameter of at least 0.6 micron have an average aspect ratio of greater than 8:1 and account for at least 50 percent of the total projected area of the silver halide grains.







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