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DE700913C - hischer halogen silver gelatine layers - Google Patents

hischer halogen silver gelatine layers

Info

Publication number
DE700913C
DE700913C DE1935I0052153 DEI0052153D DE700913C DE 700913 C DE700913 C DE 700913C DE 1935I0052153 DE1935I0052153 DE 1935I0052153 DE I0052153 D DEI0052153 D DE I0052153D DE 700913 C DE700913 C DE 700913C
Authority
DE
Germany
Prior art keywords
hischer
halogen silver
gelatine layers
development
layers
Prior art date
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.)
Expired
Application number
DE1935I0052153
Other languages
German (de)
Inventor
Dr Edith Weyde
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DE1935I0052153 priority Critical patent/DE700913C/en
Application granted granted Critical
Publication of DE700913C publication Critical patent/DE700913C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/305—Additives other than developers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

Verfahren zur schleierfreien Entwicklung photographischer Halogensilber-Gelatine-Schichten Während ' das q.-Phenylthiosemicarbazid dem Entwickler zugesetzt zu einer starken Verschleierung der Bilder führt, zeigen Thiosemicarbazide, bei denen zwei an verschiedene Stickstoffatome gebundene Wasserstoffatome durch einwertige aliphatische oder aromatische Radikale ersetzt sind, überraschenderweise eine gute Schleierverhütung, ohne den Bildton zu verändern, wie dies z. B. bei Nitrobenzimidazol und anderen ähnlichen Stoffen der Fall ist. Als besonders geeignet erweisen sich -hierbei die Stoffe, welche - eine Phenyl- oder eine Cyclohexylgruppe enthalten.Process for the fog-free development of photographic silver-halide gelatin layers While 'the q.-phenylthiosemicarbazide added to the developer to a strong Obfuscation of the images shows thiosemicarbazides, which are two at different Hydrogen atoms bonded to nitrogen atoms by monovalent aliphatic or aromatic ones Radicals are replaced, surprisingly, a good veil prevention without the To change picture tone, as z. B. with nitrobenzimidazole and other similar Fabrics is the case. Particularly suitable here are the substances which - contain a phenyl or a cyclohexyl group.

Ein geeignetes Rezept für die Entwicklung von z. B. Chlor- oder Bromsilberpapieren ist das folgende: Wasser 1000 ccm I-Oxy-q.-methylaminobenzolsulfat 2 g Hydrochinon 6- Soda , sicc. 20 - Sulfit sicc. 35- Bromkalium 035 - 2,¢-D2phenylthiosemicarbazid 0205 - A suitable recipe for the development of e.g. B. Chlorine or bromide silver papers is the following: Water 1000 cc I-oxy-q.-methylaminobenzene sulfate 2 g Hydroquinone 6- Soda, sicc. 20 - Sulfite sicc. 35- Potassium bromide 035 - 2, ¢ -D2phenylthiosemicarbazide 0205 -

Claims (1)

PATRNTANSPRUCII: Verfahren zur schleierfreien Entwicklung belichteter photographischer Halogensilber-Gelatine-Schichten, dadurch gekennzeichnet, daB einem der zur Entwicklung zu benutzenden Bäder Thiosemicarbazide zugesetzt werden, bei denen mindestens zwei an verschiedene Stickstoffatome gebundene Wasserstoffatome durch einwertige aliphatische oder aromatische Radikale ersetzt sind.PATRNTANSPRUCII: Process for the fog-free development of exposed photographic halogen silver gelatin layers, characterized in that one Thiosemicarbazides are added to the baths to be used for development which have at least two hydrogen atoms bonded to different nitrogen atoms are replaced by monovalent aliphatic or aromatic radicals.
DE1935I0052153 1935-04-18 1935-04-19 hischer halogen silver gelatine layers Expired DE700913C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1935I0052153 DE700913C (en) 1935-04-18 1935-04-19 hischer halogen silver gelatine layers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEI0052153 1935-04-18
DE1935I0052153 DE700913C (en) 1935-04-18 1935-04-19 hischer halogen silver gelatine layers

Publications (1)

Publication Number Publication Date
DE700913C true DE700913C (en) 1941-01-03

Family

ID=25981855

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1935I0052153 Expired DE700913C (en) 1935-04-18 1935-04-19 hischer halogen silver gelatine layers

Country Status (1)

Country Link
DE (1) DE700913C (en)

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