DE899587C - Process for accelerating the development of photographic silver halide layers - Google Patents

Process for accelerating the development of photographic silver halide layers

Info

Publication number
DE899587C
DE899587C DE1951F0006190 DEF0006190A DE899587C DE 899587 C DE899587 C DE 899587C DE 1951F0006190 DE1951F0006190 DE 1951F0006190 DE F0006190 A DEF0006190 A DE F0006190A DE 899587 C DE899587 C DE 899587C
Authority
DE
Germany
Prior art keywords
development
accelerating
silver halide
photographic silver
halide 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
DE1951F0006190
Other languages
German (de)
Inventor
Dr Trude Metzger
Dr Erwin Mueller
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.)
Agfa Gevaert NV
Original Assignee
Agfa 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 Agfa AG filed Critical Agfa AG
Priority to DE1951F0006190 priority Critical patent/DE899587C/en
Application granted granted Critical
Publication of DE899587C publication Critical patent/DE899587C/en
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29Development processes or agents therefor
    • G03C5/305Additives other than developers
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08Sensitivity-increasing substances
    • G03C1/10Organic substances

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Description

Verfahren zur Beschleunigung der Entwicklung photographischer Halogensilberschichten Die bisher zur Beschleunigung der Entwicklung photographischer Halogensi,lberschichten verwendeten Substanzen haben den Nachteil, daß sie bei relativ kurzen Entwicklungszeiten, wie sie bei der Entwicklung photographischer Papiere üblich sind, keine :genügende Wirkung ausüben.Process for accelerating the development of photographic silver halide layers The overlayers hitherto used to accelerate the development of photographic halogens The substances used have the disadvantage that with relatively short development times, as is customary in the development of photographic papers, none: sufficient Have an effect.

Es, wurde nun ein Verfahren zur Beschleunigung der Entwicklung photographischer Halogensilberschichten (gefunden, das diesen Nachteil nicht besitzt. Nach diesem Verfahren wird die Entwicklung der Halogensilberschichten in Gegenwart von Guanazol und/oder Derivaten des Guanazols vorgenommen. Diese Substanzen besitzen im alkalischen Medium sowohl eine halogensilberlösende als auch eine reduzierende Wirkung. Neben der Entwicklungsbeschleunigung wird mit diesen Substanzen daher auch gleichzeitig eine Verbesserung .der Schwärzen der entwi:dkelten Silberbilder erzielt. Als Substitutionsprodukte ;des Guanazols können verwendet werden: Alkylguanazole, Arylguanazole, Aralkylguanazo-le, Acylguanazole und durch Heterozyklen substituierte Guanazole, in denen die heterozyklischen Kerne direkt oder über beliebige organische Reste mit dem Guanazolkern verbunden sein: können. Es seien beispielsweise die folgenden Guanazole angeführt: Guanazol, das durch Umsetzen von Hydrazin mit Dicyand:iami-d in saurer Lösung erhalten wird, Phenylguanazol, Propionitrilguanazol, das dargestellt wird, indem man das Anlagerungsprodukt von Acrylnitril an Hydrazin mit Dicyandiamid in saurer Lösung umsetzt, ferner Acylguanazole, die in analoger Weise aus Säur-ehyd@raziden und, Dicyandi@amid erhältlich sind., Verbindungen, die den Guanazolring mehrere Male enthalten, wie sie z. B. durch Umsetzen von Dicarbonsäurehydraziden. mit Dicyandiamid erhältlich 'sind, das Umsetzungsprodurkt des Hydrazins .der Dehydrotoilu@dinsulfosäure mit Dicyandiamid sowie das Umsetzungsprodukt des Semicarbamids mit Dicyandi.ami.d, welches letztere die folgende Formel besitzt: Die obengenannten Verbfindungen werden vorzugsweise den organische Entwicklersubstanzen enthaltendien Entwicklerlösungen' in Mengen von o,o5 bis 8 g pro Liter zugesetzt. Ein solcher Entwickler hat z. B. folgende Zusammensetzung: Wasser iooo.ccm, Metol i g, Hydrochinon 3i ,g, Natriumsulfrt sicc. i3 g, Natriumcarbonat sicc. 26g, Bromkali i g, Guanazo@l( o,3!9.A process has now been found for accelerating the development of photographic silver halide layers (which does not have this disadvantage. According to this process, the development of the silver halide layers is carried out in the presence of guanazole and / or derivatives of guanazole. In an alkaline medium, these substances both dissolve halosilver As well as a reducing effect. In addition to accelerating development, these substances also improve the blackening of the developed silver images. The following can be used as substitution products of guanazole: alkylguanazoles, arylguanazoles, aralkylguanazoles, acylguanazoles and those substituted by heterocycles Guanazoles, in which the heterocyclic nuclei can be connected to the guanazole nucleus directly or via any organic radicals: The following guanazoles may be mentioned, for example: Guanazole, which is converted into acidic by reacting hydrazine with dicyand: iami-d r solution is obtained, phenylguanazole, propionitrilguanazole, which is prepared by reacting the adduct of acrylonitrile with hydrazine with dicyandiamide in acidic solution, furthermore acylguanazoles, which are obtainable in an analogous manner from acid ehydrazides and dicyandiamide., Compounds containing the guanazole ring several times, such as those described in e.g. B. by reacting dicarboxylic acid hydrazides. are obtainable with dicyandiamide ', the reaction product of hydrazine .der Dehydrotoilu @ dinsulfonic acid with dicyandiamide and the reaction product of semicarbamide with Dicyandi.ami.d, which the latter has the following formula: The abovementioned compounds are preferably added to the developer solutions containing organic developer substances in amounts of 0.05 to 8 g per liter. Such a developer has e.g. B. the following composition: water iooo.ccm, Metol ig, hydroquinone 3i, g, sodium sulfate sicc. i3 g, sodium carbonate sicc. 26g, potassium bromide ig, guanazo @ l (o, 3! 9.

Es ist jedoch auch möglich, die oben@genannten Verbindungen den photographischen Emulsi.ons-und/oder Schutzschichten zuzusetzen. Es. sind hierfür im allgemeinen Mengen von o,oi bis o,5 g pro Kilogramm Emulsion, erforderlich. Auch können diese Verbindungen in beliebige andere Hilfsschichten in pboto;graphischem Mater,iad@ sowie auch in die Schichtträger eingebracht wenden. Die vorgenannten Entwicklungsbeschleuniger sind auch bei, der chromogenen Entwicklung wirksam. Zur Erläuterung der entwicklungsbeschleunigenden Wirkung der iG.itanazole bei. der chromogenen Entwicklung einer Halogensilberschicht sei folgender'Farbentwickler genannt: H.0 i ooo- ccm, Kali,umcarbonat sicc. 70g, Natriumsulfit sicc. 0,5 g, Ka.l,ium,bromi,d o,5 g, Diäthyl-p-phenylendiami@n-Hydrochlorid 4,5 g, Phenyl-methylpyraz,o@lon 3 g, Cyanäthylguanazol 0,3 g.However, it is also possible to add the above @ mentioned compounds to the photographic Add emulsions and / or protective layers. It. are for this in general Amounts of o.10 to o.5 g per kilogram of emulsion are required. You can also do this Connections in any other auxiliary layers in pboto; graphic mater, iad @ as well as incorporated into the substrate. The aforementioned development accelerators are also effective in chromogenic development. To explain the development accelerating Effect of iG.itanazole. the chromogenic development of a halogen silver layer the following color developer may be mentioned: H.0 100 ccm, Kali, umcarbonat sicc. 70g, Sodium sulfite sicc. 0.5 g, Ka.l, ium, bromi, do, 5 g, diethyl-p-phenylenediami @ n-hydrochloride 4.5 g, phenylmethylpyraz, o @ lon 3 g, cyanoethylguanazole 0.3 g.

Der angegebene Entwickler ruft wesentlich stärkere Farbbilder hervor als der entsprechende Entwickler ohne Zusatzdes Guanazol.dierivates. Es ist ferner auch möglich, die Guanazole chromogenen Entwicklerlösungen zuzusetzen, .die keinen Farbkuppler enthalten, und @diese- Lösungen zur Entwicklung von Halogensilberemulsionsschichten zu verwenden, die .die Farbkuppler in diffusionsfester Form enthalten. Ferner können die Guanazole auch den Farbkuppler enthaltenden Halogensilberemuls,ionsschichten zugesetzt werden, wobei die Entwicklung der Schichten mit Entwicklerlösungen vorgenommen wird, die keine Guanazole zu enthalten brauchen.The specified developer produces much stronger color images than the corresponding developer without the addition of the guanazole derivative. It is further also possible to add the guanazole chromogenic developer solutions, which do not Contain color couplers, and @ these- solutions for developing halogen silver emulsion layers to use the .the color couplers in diffusion-proof form. Furthermore can the guanazoles also contain the color coupler-containing halogen silver emulsions, ion layers are added, the layers being developed with developer solutions that do not need to contain guanazole.

Claims (1)

PATENTANSPRUCH: Verfahren zur Beschleunigung der Entwicklung photographischer Halogensilberschichten, dadurch gekennzeichnet, daß man die Entwicklung .in Gegenwart von Guanlazol .und/o!der dessen Derivaten vornimmt.PATENT CLAIM: Process for accelerating the development of photographic images Halogen silver layers, characterized in that the development .in the presence of guanlazole. and / o! who makes its derivatives.
DE1951F0006190 1951-05-07 1951-05-07 Process for accelerating the development of photographic silver halide layers Expired DE899587C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1951F0006190 DE899587C (en) 1951-05-07 1951-05-07 Process for accelerating the development of photographic silver halide layers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1951F0006190 DE899587C (en) 1951-05-07 1951-05-07 Process for accelerating the development of photographic silver halide layers

Publications (1)

Publication Number Publication Date
DE899587C true DE899587C (en) 1953-12-14

Family

ID=7084899

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1951F0006190 Expired DE899587C (en) 1951-05-07 1951-05-07 Process for accelerating the development of photographic silver halide layers

Country Status (1)

Country Link
DE (1) DE899587C (en)

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