Halogenated cyanine dyes with three nuclei, method of preparation of the same, use of them as sensitizers in direct positive photographic materials, direct positive photographic material with a content of trinuclear halogenated cyanine dyes and use of this direct positive photographic material for the production of direct positive images

摘要

direktpositives photographic material with at least one layera chemically or by exposure oberflächenverschleierte silberhalogenidemulsion and as a trinuklearen tetramethincyaninfarbstoff sensibilisato