Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1982-09-30
1983-08-16
Downey, M. F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430569, G03C 102, G03C 526
Patent
active
043992153
ABSTRACT:
A double-jet precipitation process is disclosed for preparing radiation-sensitive photo- graphic emulsions containing tabular silver chloride grains which are substantially internally free of bromide and iodide. In forming the emulsions chloride and silver salt solutions are concurrently run into a dispersing medium while controlling both pH and pAg. Tabular grains having an average aspect ratio of greater than 8:1 are obtained.
REFERENCES:
patent: 3784381 (1974-01-01), Perignon
patent: 4063951 (1977-12-01), Bogg
patent: 4067739 (1978-01-01), Lewis
patent: 4150994 (1979-04-01), Maternaghan
patent: 4184877 (1980-01-01), Maternaghan
patent: 4184878 (1980-01-01), Maternaghan
Claes et al., "Crystal Habit Modification of AgCl by Impurities Determining the Solvation," The Journal of Photographic Science, vol. 21 pp. 39-50, 1973.
Wyrsch, "Sulfur Sensitization of Monosized Silver Chloride Emulsions with (111), (110) and (100) Crystal Habit", Paper III-13, International Congress of Photographic Science pp. 122-124, 1978.
Grundlagen der Photographische Prozesse mit Silberhalogeniden Band 2, Die Photographishe Emulsion und die Verabeitung Photographischer Schichten, Akademische Verlagsgesellschaft Frankfurt AM Main (1968) p. 639.
Symposium: Torino 1963, Photographic Science, Edited by C. Semerano and U. Mazzucato, Focal Press, pp. 52-55.
Gutoff, "Nucleation and Growth Rates During the Precipitation of Silver Halide Photographic Emulsions," Photographic Science and Engineering, vol. 14, No. 4, Jul.-Aug. 1970, pp. 248-250.
deCugnac and Chateau, "Evolution of the Morphology of Silver Bromide Crystals During Physical Ripening," Science et Industries Photographiques, vol. 33, No. 2 (1962) pp. 121-125.
Duffin, Photographic Emulsion Chemistry, Focal Press, 1966, pp. 66-72.
Trivelli and Smith, "The Effect of Silver Iodide Upon the Structure of Bromo-Iodide Precipitation Series," The Photographic Journal, vol. LXXX, Jul. 1940, pp. 285-288.
Downey M. F.
Eastman Kodak Company
Thomas Carl O.
LandOfFree
Double-jet precipitation processes and products thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Double-jet precipitation processes and products thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double-jet precipitation processes and products thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-815081