EP 0244356 A3 19880427 - METHOD FOR PREPARING PHOTOGRAPHIC DIRECT-POSITIVE EMULSIONS
Title (en)
METHOD FOR PREPARING PHOTOGRAPHIC DIRECT-POSITIVE EMULSIONS
Publication
Application
Priority
CH 169286 A 19860425
Abstract (en)
[origin: EP0244356A2] The emulsions contain platelet-shaped silver halide crystals of layered structure and can give a latent internal image; they are prepared by growing a shell of silver halide on chemically sensitised, platelet-shaped silver halide cores. Sensitisation of the shell and treatment of the resulting crystals with iodide ions. <IMAGE>
IPC 1-7
IPC 8 full level
G03C 1/015 (2006.01); G03C 1/005 (2006.01); G03C 1/485 (2006.01); G03C 8/02 (2006.01); G03C 1/18 (2006.01)
CPC (source: EP)
G03C 1/0051 (2013.01); G03C 1/48576 (2013.01); G03C 8/02 (2013.01); G03C 1/18 (2013.01)
Citation (search report)
- DE 3241643 A1 19830519 - EASTMAN KODAK CO [US]
- DE 324643 C 19200830 - DEUTSCH LUXEMBURGISCHE BERGWER, et al
- US 4581328 A 19860408 - MATSUYAMA JUNICHI [JP]
- [Y] J.M. EDER: "Ausführliches Handbuch der Photographie", 3. Auflage, Band 2, Teil 1, 1927, Seiten 567-584, Verlag von Wilhelm Knapp, Halle (Saale), DE; H. LÜPPO-CRAMER: "Die Grundlagen der photographischen Negativverfahren", Kapitel 13: "Die Eigenart des Jodsilberbildes"
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0244356 A2 19871104; EP 0244356 A3 19880427; JP S62260139 A 19871112
DOCDB simple family (application)
EP 87810251 A 19870421; JP 9635887 A 19870421