Fuji Photo Film Company, Limited

Seiki Sakanoue

Yukio Maekawa

Keiichi Adachi

Shinsaku Fujita

Osamu Takahashi

Kokichi Waki

Motohiko Tsubota

Shinichi Imai

Kazuya Sano

Masakazu Morigaki

Shigeo Hirano

Nobuo Furutachi

Hidetoshi Kobayashi

Minoru Sakai

Tadahisa Sato

Toshio Kawagishi

Tadao Shishido

Takeshi Hirose

Tsumoru Hirano

Kiyoshi Nakazyo

Akio Mitsui

Nobuo Sakai

Takayoshi Kamio

Yoshiharu Fuseya

Asao Nakatsuka

A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer containing a dispersion, said dispersion comprising oleophilic fine particles containing (a) at least one oil-soluble cyan coupler represented by formula (I) (described herein) capable of forming substantially non-diffusible cyan dye upon coupling with an oxidation product of an aromatic primary amine developing agent, and (b) a water-insoluble, organic solvent-soluble homopolymer or copolymer comprising not more than about 20% by weight of a repeating unit having an acid radical in the main chain or a side chain thereof, wherein the dispersion does not contain high-boiling point organic solvents. The photographic material provides color images excellent in preservability, particularly resistance to dark discoloration and light discoloration in good balance.

Silver halide color photographic material

A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, said silver halide emulsion layer containing a pyrazoloazole series magenta coupler represented by general formula [I] ##STR1## wherein, R.sup.1 and R.sup.2 each represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a releasing group which is released at the reaction with the oxidation product of an aromatic primary amine developing agent; at least one of said R.sup.1 and R.sup.2 is an alkyl group having a secondary or tertiary carbon atom directly bonded to the skeleton, at least one of said R.sub.1 and R.sub.2 is a sulfonamidoalkyl group or a sulfamoylalkyl group; and the magenta coupler may form a dimer or more polymer at the position of said R.sup.1, R.sup.2 or X. By the combined use of high boiling point organic solvent and ultraviolet absorbent, light fastness and coloring property are markedly improved.

Silver halide color photographic materials containing novel magenta

In color photographic sensitive materials comprising at least one direct reversal silver halide emulsion layer associated with a diffusible dye-releasing redox compound on a base, the improvement which comprises that at least one of a layer containing said redox compound or said direct reversal silver halide emulsion layer contains about 5 to 200 mg per 100 millimols silver in the emulsion layer of a compound represented by the general formula (I): ##STR1## wherein A.sub.1 and A.sub.2 each represents a hydrogen atom or a hydrolyzable group, P, Q and R which may be the same or different each represents a hydrogen atom, an alkyl group, an aryl group, an alkylthio group, an arylthio group, a hydroxyl group, a halogen atom, an alkoxy group, an aryloxy group, a heterocyclic group or an --S--Z.sup.2 group, Z.sup.1 and Z.sup.2 may be the same or different and each represents an unsaturated heterocyclic residue which is photographically inactive when bonded to the hydroquinone through the sulfur moiety, and --S--Z.sup.1 or --S--Z.sup.2 is an atomic group which when released by oxidation exhibits a development inhibiting function; at least one of P and Q is an alkylthio group or an arylthio group, and at least one of P, Q and R contains a ballast group.

Color photographic sensitive materials

In a color diffusion transfer photographic element containing at least one dye-releasing redox compound-containing layer associated with a silver halide photographic emulsion and capable of releasing a diffusible dye as a result of a redox reaction with the oxidation product of a developing agent produced by the development of silver halide with an alkaline processing solution, and at least one layer containing an antistain agent, the improvement which comprises said dye-releasing redox compound-containing layer associated with said silver halide photographic emulsion being spaced from the adjacent interlayer containing said antistain agent by a spacer layer essentially containing a hydrophilic colloid or by a silver halide emulsion layer having substantially the same spectral sensitivity as that of the associated silver halide emulsion.

Color diffusion transfer photographic element

A color photographic light-sensitive material containing at least one hydroquinone compound substituted with one or two tertiary alkyl groups having 15 carbon atoms, or a precursor thereof. The hydroquinone compounds are particularly useful for preventing color fog or color stain which is observed with color photographic light-sensitive materials.

Color photographic light-sensitive material

Photographic dye developing agents represented by the following formula (I): ##STR1## wherein A represents an anthraquinone dye moiety, X represents a hydrogen atom, an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, an aryl group or a heterocyclic group, at least one of A and X contains an o-dihydroxyphenyl group or a p-dihydroxyphenyl group as a dye developing agent moiety, n is an integer of 1 to 4, and COY represents a group which is released from the nitrogen atom at a pH of above 9.

Shifted anthraquinone dye developing agents

A color diffusion transfer photographic material which comprises: (a) a light-sensitive element containing at least one silver halide emulsion layer having a dye image-providing material associated therewith; (b) an image-receiving element capable of imagewise fixing the dye image-providing material as a result of exposure and development of the silver halide emulsion layer; and (c) a processing composition capable of causing development of the silver halide emulsion layer and containing a mercapto compound having a molecular weight of about 230 or higher; with at least one of the light-sensitive element, the image-receiving element and the processing composition containing a developing agent for the silver halide.

High molecular weight mercapto compound in color diffusion transfer

A yellow dye developer having improved photographic properties represented by the formula (I) ##STR1## wherein X represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an acylamino group having 1 to 4 carbon atoms; Z represents an atomic group necessary for completing a furan ring or a benzofuran ring; Y represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms; Ar represents an aromatic ring; R.sub.1 represents a hydrogen atom, a halogen atom, an acyl group having 1 to 4 carbon atoms, or an alkyl group having 1 to 5 carbon atoms; R.sub.2 represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms with the R.sub.2 group being at the ortho-position to the azo group; m and n each is an integer of 1 to 4; and at least one of X, Z, Ar and R.sub.1 being bonded to a polyhydric phenol moiety directly or through an atom or a divalent group; and a photographic material containing the dye developer.

Furan containing azo dye developers

A dye developer represented by the following general formula (I), ##SPC1## wherein X is a hydrogen atom, a bromine atom, a nitro group, an acylamino group, a hydroxyl group or an alkyl group having not more than 4 carbon atoms; n is 1, 2 or 3; Y is an acyl group having not more than 4 carbon atoms; and Ar is a mono- or polyaryl group; and wherein an aromatic ring can be condensed in the 4-and 5-positions of the furan ring nucleus, and at least one of X, the aromatic ring condensed with the furan ring nucleus and Ar being directly connected to or being connected through an atom or an atomic grouping to a polyphenol having developing activity for silver halide.

Azo dye developers comprising furan rings

A dye developer represented by the following general formula (I): ##EQU1## WHEREIN X represents the atoms necessary for completing a monocyclic or polycyclic aromatic group; Y represents an acyl group having 1 to 4 carbon atoms; Ar and Z each represents a monocyclic polycyclic aromatic group, with Ar being connected either directly or through a divalent atom or group to a polyhydric phenol moiety having a silver halide developing action; R represents an alkyl group or an alkoxy group; n represents an integer of 0 to 4; and Q represents ##EQU2## wherein Z' represents a hydrogen atom or an alkyl group, R.sub.2 and R.sub.3 each represents a hydrogen atom or an aliphatic group, or R.sub.2 and R.sub.3 can combine to form a divalent aliphatic group and a light-sensitive material comprising a support having thereon a light-sensitive silver halide emulsion layer with the dye developer of this invention associated therewith.

Bis-azo pyrazolone type dye developer and light-sensitive material

A color diffusion transfer photographic light-sensitive material which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide combined with a dye developer, one of the light-sensitive silver halide emulsion layers being combined with a dye developer represented by the following General Formula (I); ##EQU1## wherein Ar represents a divalent aromatic group; X represents ##EQU2## with R being an alkyl group having 1 to 3 carbon atoms, --NHCO-- with the nitrogen atom being connected to the Ar group or --OCO-- with the oxygen atom being connected to the Ar group; and Y represents an aromatic group having a substituent containing a hydroquinonyl group.

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Minami-ashigara, Japan

Seiki Sakanoue