ES310745A1 - Improvements in photographic materials for the argentico color blanking procedure. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in photographic materials for the argentico color blanking procedure. (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
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Filing date
Publication date
Priority claimed from CH356564Aexternal-prioritypatent/CH440966A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES310745A1publicationCriticalpatent/ES310745A1/en
Silver Salt Photography Or Processing Solution Therefor
(AREA)
Abstract
Improvements in photographic materials for the silver-colored bleaching process, characterized in that they contain in one layer at least one dye of the formula **(See formula)** in which R1 means a benzene radical and R2 and R3 each signify a monocyclic benzene radical, wherein R3 is linked in the 1,4-position to the azo groups and shows in each of the 2 and 5 positions an alkoxy group, optionally further substituted, and R4 represents the radical of an 8-oxinaphthalene disulfonic acid linked in position 7 to the azo group, and containing in position 1 a further substituted amino group. (Machine-translation by Google Translate, not legally binding)
ES0310745A1964-03-191965-03-18Improvements in photographic materials for the argentico color blanking procedure. (Machine-translation by Google Translate, not legally binding)
ExpiredES310745A1
(en)
Improvements in a procedure for the manufacture of a reversible heat diazotypy material. (Machine-translation by Google Translate, not legally binding)