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
  • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
  • G03C8/02—Photosensitive materials characterised by the image-forming section
  • G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
  • G03C8/06—Silver salt diffusion transfer
• • 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
  • G03C5/30—Developers
  • G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring

Definitions

• the present invention relates to a process for processing an exposed photographic silver halide light-sensitive material. More particularly, the present invention relates to a process for processing exposed silver halide photographic material by diffusion transfer process.
• a latent image formed in a negative emulsion layer by imagewise exposure is developed and, simultaneously, a residual unexposed silver halide, i.e., undeveloped silver halide, in the negative emulsion layer, is reacted with a silver halide solvent to form a soluble silver complex in an amount corresponding to the amount of the exposure.
• soluble, silver complex is reduced in a print-receiving layer which is brought into contact with the exposed silver halide emulsion layer and contains a suitable silver precipitating layer, whereby the reduced silver is precipitated to give the desired positive image.
• An object of the present invention is to prepare a processing solution for a high speed diffusion transfer process, which is suitable for forming satisfactory images from a silver halide emulsion exposed to a small quantity of light, for example, of exposure index ASA 1,000.
• the processing solution to be employed in the diffusion transfer process according to the present invention is a viscous liquid which is uniformly spread between the negative and positive layers, and develops a latent image in the silver halide emulsion layer, even when formed by a small quantity of exposure index more than ASA 1,000, followed by the same step as above to form positive images. Moreover, it is desirable to finish the processings to form the positive image within short periods of time, that is, within 1 minute.
• An object of the present invention is to prepare a processing solution for use in a high speed diffusion transfer process which is suitable for the purpose of forming a satisfactory positive image from a silver halide emulsion which has been exposed to small quantities of light, for ixgrple, to light showing an exposure index of ASA More particularly, this invention provides highly active developing agents suitable for use in processing solutions employed in the above-described high speed diffusion transfer process.
• X is a lower alkenyl or a lower alkenoxy group
• R is hydrogen or a lower alkyl group
• R R and R each is hydrogen, a lower alkyl group, a lower alkenyl group, or a lower alkoxy group, the term lower indicating that the total number of carbon atoms is not more than 4.
• the compounds of the above-described formula to be employed according to the present invention may be used in either the form of a free amine, as shown by the general formula itself, or in the more stable form of acid addition salts, such as sulfates and hydrochlorides.
• the images obtained by the high speed diffusion transfer process using, as a developing agent, a compound of the above-described general formula can yield a satisfactory positive image.
• the compounds represented by the general formula are very soluble in water. Since a quantity of the highly active developing agent is to be employed in the process ng solution of the high speed diffusion transfer process, the great solubility in water can be extremely advantageous.
• the compounds of the general formula may be used singly as highly active developing agents or may be used together with other reducing agents, such as phenols, such as cresol, and hydroxylamines, such as N,N-diethylhydroxylamine.
• Synthesis 1 (4-amino-2-allylphenol hydrochloride) While a solution consisting of 97 g. of sulfanilic acid, 39.2 g. of sodium carbonate monohydrate and 1 liter of water was maintained at 8 C., 168 ml. of concentrated hydrochloric acid and then 40.6 g. of sodium nitrite dissolved in a small amount of water were added to obtain a reaction mixture containing White diazonium salt.
• the resulting mixture was added to a solution composed of 112 g. of caustic soda, 164 g. of sodium carbonate monohydrate, 75 g. of 2-allylphenol and 2 liters of water with stirring, wherein the temperature of the reaction mixture should be kept below C. in a water bath. After the addition, the water bath was removed and, after stirring for an hour, 400 g. of sodium hydrosulfite was added thereto followed by heating to 70 C. to provide precipitated white crystals of the amine. After cooling, the crystalline amine was collected and converted into its hydrochloride, whereby 67 g. of 4-amino-2-allylphenyl hydrochloride, as colorless crystals having a melting point of from 177 to 190 C. (decomposed), was obtained in a yield of 64.4%.
• Synthesis 2 (4-amino-2,fi-diallylphenol hydrochloride)
• 2,6-diallylphenol was coupled with a diazonium salt of sulfanilic acid followed by treatment with sodium hydrosulfite.
• the resulting amine was converted into its hydrochloride to obtain the desired product, as colorless needles having a melting point of from 125 to 165 C. (decomposed), in a yield of 51.0%.
• Synthesis 3 (4-amino-2-allyl-3,5-dimethylphenol hydrochloride)
• 2-allyl-3,5-dimethylphenol was coupled with a diazonium salt of sulfanilic acid followed by treatment with sodium hydrosulfite.
• the resulting amine was formed into its hydrochloride to obtain the desired product as colorless crystals having a melting point of from 236 to 237 C. in a yield of 55.1%.
• the developing agents represented by the general formula are very useful as developing agents in the silver salt diffusion transfer process.
• the negative materials employed in the invention may be film or paper having coated thereon black-white negative emulsions intended for use in usual photography or negative emulsions for use in X-ray photography. These negative emulsions contain silver halide, such as silver iodobromide, which may be spectrally and/or chemically sensitized.
• the positive materials are composed of a film or paper having coated thereon a layer containing nuclei of physical development. Among such positive materials is, for example, a Positive Paper for Neo-Copy made by Fuji Photo Film Co., Ltd.
• the print-receiving layer was stripped to obtain a positive image of satisfactory gradation.
• Example 1 was repeated, except that compound (4) was employed as the hydrochloride in place of compound (1).
• Example 2 was repeated, except that compound (4) was employed as the hydrochloride in place of compound (1).
• Example 3 was repeated, except that compound (4) was employed as the hydrochloride in place of compound (1).
• a high speed difi'usion transfer process which comprises processing an exposed photographic silver halide material with a processing solution containing a compound represented by the following general formula or acid salt thereof:
• X is a lower alkenyl or a lower alkenoxy group
• R is hydrogen, or a lower alkyl group
• R R and R each is hydrogen, a lower alkyl group, a lower alkenyl group or a lower alkoxy group, in which the term lower indicates that the total number of carbon atoms is not more than 4.
• processing solution contains an alkaline agent, an antifoggant and/or viscosity-increasing agent thickeners.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=12828193

Family Applications (1)

Country Status (4)

Cited By (3)

• 1970
  • 1970-06-08 JP JP45049338A patent/JPS492624B1/ja active Pending
• 1971
  • 1971-06-04 GB GB1908471*[A patent/GB1309365A/en not_active Expired
  • 1971-06-08 US US00150932A patent/US3723118A/en not_active Expired - Lifetime
  • 1971-06-08 DE DE19712128497 patent/DE2128497A1/de active Granted

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