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
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/407—Development processes or agents therefor
  • G03C7/413—Developers
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
  • C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
  • C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
  • C07D235/06—Benzimidazoles; Hydrogenated benzimidazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
  • C07D235/08—Radicals containing only hydrogen and carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
  • C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
  • C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
  • C07D235/20—Two benzimidazolyl-2 radicals linked together directly or via a hydrocarbon or substituted hydrocarbon radical

Definitions

• a prdcss for-developing'exposed multilayer color photographic silver-halide light-Sensitive elements which comprisespr'oc'essing said color photographic element in a processing composition containing a compound represented by the general formula:
• R represents an alkyl group having four to 7 carbon atoms or a compound represented by the general fonnula:
• R represents an alkylene group having one to eight carbon atoms.
• the present invention relates to a process for developing 5 color photographic light-sensitive elements and more particularly to a process for developing color photographic light-sensitive elements using an additive which is effectively employed in the case of conducting development at a high temperature.
• a multilayer color photographic element generally has at least three difl'ercnt sensitive silver halide emulsion layers superimposed on a support, for example, a lowermost red-sensitive emulsion layer, a green-sensitive emulsion layer, a yellow filter layer, and an uppermost blue-sensitive emulsion layer. These are generally formed on a support in this order.
• high temperature processing in this specification means color photographic developing processing at a temperature higher than 30 C.
• R represents an alkyl group having 4 to 7 carbon atoms or a compound represented by the general formula:
• R represents an alkylene group having 1 to 8 carbon atoms.
• one object of the present invention is to provide a process for efi'ectively preventing the formation of fogs in a high temperature developing process for color photographic light-sensitive elements.
• R represents an alkyl group having 4-7 carbon atoms and R represents an alkylene group having 1-8 carbon atoms.
• the present invention by adding the above compound to a developing solution used in high-temperature processing, the formation of development fog can be effectively prevented to provide a development balance, and the total color balance of the image and the quality thereof are further improved.
• on merit of the present invention is in enabling the processing of photographic light-sensitive elements at a temperature of from 30 to C. (at least in the case of using the compound of this invention).
• the compound of the present invention is particularly effective in the so-called coupler-in-developer type reversal development, in which color developments are conducted in three steps, i.e., cyan development, yellow development, and magenta development.
• the cyan development provides cyan fogs in the blue-sensitive emulsion layer and the green-sensitive emulsion layer which are to be color developed in a yellow color developer and a magenta color developer, respectively. This gives severe color mixing or color stain and provides an image having a bad color balance.
• the abovementioned compound of the present invention may effectively be incorporated in a first black and white developing solution in a coupler-in-developer type color reversal developing process, as well as a coupler-in-emulsion layer type color reversal developing process.
• the reversal color image thus obtained has an excellent image quality with good color balance and high reversal color density.
• the compound of this invention can effectively be incorporated in the pretreatment bath.
• the compound of this invention in a color developing solution in the development process for color negative films or color papers, the reduction in the gamma value caused by the increase in the formation of fogs in the high-temperature process can be prevented, and an image having good color balance is obtained with a good development balance.
• a coupler-in-developer type color developing solution in which the above-mentioned compound of the present invention is incorporated contains, in addition to a colordeveloping agent and a coupler, an alkali such as sodium hydroxide or sodium carbonate, a salt such as sodium sulfate, a developing inhibitor such as an alkali halide, and an antioxidant such as sodium sulfite or hydroxylamine sulfate.
• an alkali such as sodium hydroxide or sodium carbonate
• a salt such as sodium sulfate
• a developing inhibitor such as an alkali halide
• an antioxidant such as sodium sulfite or hydroxylamine sulfate.
• p-phenylene-diamine derivatives such as N,N-diethyl-p-phenylenediamine sulfite N,N-diethyl-3-methyl-p-phenylenediamine hydrochloride, 4-amino-3-methyl-N-ethyl-N- methanesulfonamide ethylaniline sulfate, 4-amino-3-methyL N-ethyl-NJiydroxyethyl aniline sulfate, and N-ethyl-N- hydroxyethyl p-phenylene-diamine sulfate.
• p-phenylene-diamine derivatives such as N,N-diethyl-p-phenylenediamine sulfite N,N-diethyl-3-methyl-p-phenylenediamine hydrochloride, 4-amino-3-methyl-N-ethyl-N- methanesulfon
• cyan couplers such as 2,4- dichlorol -naphthol, 2,4dichloro-5 -tolysulfonamidol naphthol, l-hydroxy-Z-benZylnaphthamide, 2,6-dibromo-l,5- dihydroxynaphthaline, etc.
• yellow couplers such as benzoylacetanilide, w-benzoyl-4-(p-toluenesulfonamide)acetanilide, etc.
• Other couplers soluble in the developing solution in general use can be employed.
• an aqueous solution containing at least one developing agent such as hydroquinone, phenidone and Metol is generally used.
• the developer further usually contains a salt such as sodium sulfate, a pH adjusting agent and a buffer agent such as borax, boric acid, sodium hydroxide, sodium carbonate, etc., and a developing inhibitor such as an alkali halide.
• a color developing agent such as a p-phcnylene-diamine derivative, a salt such as sodium sulfate, a pH-adjusting agent, and a bufier agent such as sodium hydroxide, sodium carbonate, and sodium phosphate, a developing inhibitor such as alkali halide and an antioxidant such as sodium sulfite and hydroxylamine sulfate.
• the preferred concentration of the compound of this invention is from about 1X10 mole/liter to about 1X10" -mole/liter. However, the optimum concentration thereof deinvention shall not be limited only to them.
• the reaction product was poured into ice water, neutralized with aqueous ammonia, and the crystal thus formed was collected and recrystallized from methanol to provide the crystal of Cornpound 6, as needles, melting at 259 C.
• the following examples are given in order to illustrate the invention in more detail.
• EXAMPLE 1 A multilayer color photographic film was preparedfby applying, in this order, a silver iodobromide emulsion having red sensitivity, a silver iodobromide emulsion having green sensitivity, a yellow filter layer composed of colloidal silver, and a silver iodobromide emulsion having blue sensitivity to a cellulose triacetate film.
• the color photographic film was exposed by means of a sensitometer and then subjected to the following procedures: The processing temperature, including water washing, was 40 C.
• N-Methyl-p-aminophenol 5.0 g. Sodium sull'ite I 70.0 g. Hydroquinone 2.0 g., Sodium carbonate (monohydralc) 4
• Sodhirrrsulfite 10.0 g. Potassium bromide 0.5 g. Potassium iddide (0.l% aq. aoln.) 25.0 ml.
• the photographic properties obtained as the result of the above color-development processings are shown in the following table.
• the blue density (D, max) and the red density (D max) at the maximum density portion (D max) were shown.
• the red color purity the ratio (D,/D of the red filter light density to the blue filter light density at the portion exposed to red light, and the ratio (DJD,) of the red filter light density to the green filter light density at the red exposed portion, were shown.
• Example 3 A multilayer color photographic reversal film having three differentially sensitized silver halide emulsion layers, each containing a color coupler. was exposed by means of a sensitomcter and subjected, at 37 C to the following 40 procedures:
• compositions of the processing solutions used in the above procedures were as follows:
• the compound of the present invention was incorporated in the first black and white developer as shown in the following table.
• comparative experiments were conducted without incorporating the compound in the developer and, in another case, by adding a conventional developing inhibitor, -nitrobenzimidazole, to the developer.
• the blue density (D max) is sufficiently increased and a better image quality (showing a good balance with the red density (D,max)) was obtained.
• EXAMPLE 4 A multilayer color photographic negative film having three differently sensitive silver halide emulsion layers each containing therein a color coupler was exposed by means of a sensitometer and subjected to the following processings.
• the processing temperature was 35 C.
• compositions of the processing solutions in the above processings were as follows:
• a process for developing exposed multilayer color photographic silver halide light-sensitive elements which comprises processing said color photographic element in a processing composition containing a compound represented by the general formula:
• R represents an alkylene group having 1 to 8 carbon atoms.
• concentration of said compound in said processing solution is from about 1X10""mole/liter to about 1X10" mole/liter.
• MAL fills 4 The process according to claim 1 wherein said multilayer type color photographic element and said compound is incorcolor photographic element is a coupler-in-developer type porated in the black and white developer. c0101 P l element and said compound is incor 6.
• said multilayer color photographic element is a coupler-in-emulsion layer-

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)

Applications Claiming Priority (1)

Publications (1)

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• 1969
  • 1969-10-16 DE DE1952253A patent/DE1952253C3/de not_active Expired
  • 1969-10-21 GB GB51602A patent/GB1249531A/en not_active Expired
  • 1969-10-22 US US868583A patent/US3615501A/en not_active Expired - Lifetime

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