Diffusion-fast color-forming developing agents
Abstract
Abstract PHOTOGRAPHIC IMAGES ARE OBTAINED BY DEVELOPING AN IMAGEWISE EXPOSED LIGHT-SENSITIVE PHOTOGRAPHIC MATERIAL COMPRISING AT LEAST ONE SILVER HALIDE EMULSION LAYER, WHICH CONTAINS DIFFUSION FAST P-PHENYLENE DIAMINE TYPE DEVELOPING AGENTS IN THE FORMULA 1-(H2N-),2-R1,4-(X-(CH2)N-N(-R3)-),6-R2-BENZENE WHEREIN R1 REPRESENTS HYDROGEN, ALKYL OR ALKOXY; R2 REPRESENTS HYDROGEN OR ALKYL; R3 REPRESENTS ALKYL FROM 8 TO 20 CARBON ATOMS; X REPRESENTS HYDROGEN, SULFO, CARBOXYL, HYDROXYL OR SULFONAMIDE, AND N PREPRESENTS 1 TO 4. PREFERABLY ARE PRODUCED COLORED IMAGES, USING MATERIAL WHICH CONTAINS IN THE SAME LAYER AS THE DIFFUSION FAST DEVELOPER A COLOR-FORMING COUPLER OR A DYE-GIVING COMPOUND WHICH ON REACTION WITH DEVELOPED OXIDATION PRODUCTS RELEASES A DIFFUSIBLE DYE. THE DEVELOPMENT IS PREFERABLY CARRIED OUT IN THE PRESENCE OF A PYRAZOLIDONE-3 COMPOUND.
Inventors
- 👤 Hans Vetter
- 👤 Justus Danhauser
- 👤 Karlheinz Kabitzke
- 👤 Paul Marx
- 👤 Arnfried Melzer
- 👤 Willibald Pelz
- 👤 Walter Puschel
Bibliographic Details
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