Konica Corporation

Konishiroku Photo Industry Co., Ltd.

Hiroshi Shimazaki

Yoshitaka Yamada

Satoru Shimba

Yasushi Irie

Toshihiko Yagi

Toshifumi Iijima

Fumie Fukazawa

Syoji Matsuzaka

Atsuo Ezaki

Fumio Hamada

Minoru Ishikawa

Katuya Yabuuchi

Hiroshi Inoie

Yoshiro Shigetomi

Masayuki Kurematsu

Mitsuto Fujiwhara

Eiichi Sakamoto

Hiroshi Kashiwagi

Satoru Ikeuchi

Hirofumi Ohtani

Satoshi Nakagawa

Kenji Kumashiro

Shinri Tanaka

Hideaki Haraga

Yoshihiro Haga

Yoshikazu Watanabe

Yoshihiro Inaba

Tatsuhiko Kobayashi

Yoshiharu Mochizuki

Kuniaki Uezawa

Katutoyo Suzuki

Miki Kon

Takeshi Sampei

Kenjiro Ushiyama

Yoshihide Urakawa

The present invention describes a silver halide color negative photographic light-sensitive material having an improved graininess and an excellent image quality even when picture-taken under various light sources each having a color temperature different from daylight. A silver halide color photographic material comprises a light-sensitive layer unit containing a red-sensitive silver halide emulsion and a cyan coupler, a light-sensitive layer unit containing a green-sensitive silver halide emulsion and a magenta coupler, and a light-sensitive layer unit containing a blue-sensitive silver halide emulsion and a yellow coupler, wherein RMS granularity of at least one of the light-sensitive layer units has the following relations;

Silver halide color negative photographic light sensitive material

Disclosed is a method for forming color photographic images which comprises printing of color images obtained by use of a color photographic light-sensitive material, having on a support, a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer onto a printing color photographic light-sensitive material having on a support, a yellow color forming layer, a magenta color forming layer and a cyan color forming layer, wherein the following requirements (A) and (B) are fulfilled,

Method for forming color photographic images improved in color

Disclosed is a method for forming a silver halide color photographic image comprising: exposing a silver halide color photographic light-sensitive material for photographing which comprises a support and provided thereon at least one blue-sensitive silver halide emulsion layer (B layer), at least one green-sensitive silver halide emulsion layer (G layer) and at least one red-sensitive silver halide emulsion layer (R layer) to light to obtain a latent image; processing said latent image to obtain a color negative image; printing said color negative image on a silver halide color photographic light-sensitive material for printing which comprises a support and provided thereon a yellow color-forming layer (Y layer), a magenta color-forming layer (M layer) and a cyan color-forming layer (C layer) to obtain a color photographic image; wherein: (A) the spectral sensitivity distribution of the G layer S.sub.G (.lambda.) has a maximum value at a certain point .lambda..sub.Gmax within the wavelength region 525-560 nm, and the spectral sensitivity of the G layer at 570 nm S.sub.G570 accounts for 40% or less of said maximum value; and (B) the spectral density distribution of a dye formed in the Y layer by processing said color photographic light-sensitive material for printing S.sub.Y (1) has a maximum value at a certain point 1.sub.U.sup.50 within the wavelength region 430-460 nm, and said maximum value is reduced to half at a certain point l.sub.Y.sup.50 within the longer wavelength region 480-500 nm. By the method of the invention, it is possible to obtain a color photographic image in which colors, in particular, yellow and skin color, is reproduced with an extremely high degree of accuracy.

Method for forming a silver halide color photographic image

A silver halide color photographic light-sensitive material is disclosed, which is excellent in color reproducibility and storability and has lowered color stain. The light-sensitive material comprises a support having thereon a silver halide emulsion layer comprising silver halide grains optically sensitized by a sensitizing dye represented Formula I and a sensitizing dye represented by Formula II; ##STR1##

Silver halide color photographic light-sensitive material offering

A silver halide color light-sensitive material is disclosed, which-is improved in reproducibility of green color as well as orange color and sky blue color. The light-sensitive material comprises a support and a red-sensitive emulsion layer containing a cyan dye-forming coupler, a green-sensitive emulsion layer containing a magenta dye-forming coupler and a blue-sensitive emulsion layer containing a yellow dye-forming coupler provided on the support. The blue-sensitive silver halide emulsion layer has the maximum spectral sensitivity at a wavelength within the range of 415 nm to 430 nm and a spectral sensitivity of the blue-sensitive emulsion layer at 480 nm is not more than 35% of the maximum spectral sensitivity. The maximum spectral sensitivity and the spectral sensitivity at 480 nm are determined based on a reciprocal of light amount necessary for forming an image density of 0.7 above the minimum density of the blue-sensitive emulsion layer. The blue-sensitive emulsion layer further contains a cyan dye-forming coupler together with the yellow dye-forming coupler.

Disclosed is a silver halide color photographic light-sensitive material having at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer on the support, wherein the maximum sensitivity wavelength .lambda..sub.B of the spectral sensitivity distribution in said blue-sensitive silver halide emulsion layer at 400 nm.ltoreq..lambda..sub.B .ltoreq.470 nm, the sensitivity of said blue-sensitive silver halide emulsion layer at 480 nm does not exceed 40% of the sensitivity at the maximum sensitivity wavelength .lambda..sub.B and the gradient of said blue-sensitive silver halide emulsion layer after blue light separation exposure .gamma..sub.SB and the gradient of said blue-sensitive silver halide emulsion layer after white light exposure .gamma..sub.WB bears the relationship of .gamma..sub.SB /.gamma..sub.WB .ltoreq.1.25. The silver halide color photographic light-sensitive material according to this invention is capable of exactly reproducing the hues that have been difficult to reproduce, particularly the hues of red to magenta colors and the hues of green colors such as blue-green and green without being accomplished by degradation of the reproducibility for the primary colors.

A silver halide color photographic light-sensitive material is provided which comprises a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, having a spectral sensitivity distribution such that a wavelength weight-averaged in spectral sensitivity distribution of the red-sensitive silver halide emulsion layer is within a range of 595 to 625 nm; a maximum sensitivity wavelength in spectral sensitivity distribution of the blue-sensitive silver halide emulsion layer is within a range of 415 to 470 nm; and a sensitivity of the blue-sensitive silver halide emulsion layer at 480 nm does not exceed 35% of the sensitivity at the maximum sensitivity wavelength. The color photographic material makes it possible to faithfully reproduce the hues such as purple colors and green colors.

Color photographic light-sensitive material offering excellent hue

A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material is excellent in reproducibility of blue-green or green colored photographic subject. The light-sensitive material has a blue-sensitive layer, green-sensitive layer and a red-sensitive layer. The blue-sensitive layer has the maximum spectral sensitivity at a wavelength within the range of 415 to 470 nm and the spectral sensitivity at 480 nm of the blue-sensitive layer is not more than 35% of the maximum sensitivity. The green-sensitive layer has the maximum spectral sensitivity at a wavelength within the range of 530 nm to 560 nm and the spectral sensitivity at 500 nm of the green-sensitive layer is not less than 25% of the maximum sensitivity.

Light-sensitive silver halide color photographic material

The improved color photographic material has on a support at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, each of those emulsion layers having a specified spectral response. This color photographic material has high chroma and insures faithful reproduction of color hues even under illumination with a fluorescent lamp.

Color photographic material

A silver halide color photographic light-sensitive material which offers high chroma and excellent hue reproduction comprises a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, wherein the maximum sensitivity wavelength .lambda..sub.B of a spectral sensitivity distribution of said blue-sensitive silver halide emulsion layer is in the range of 410 nm.ltoreq..lambda..sub.B .ltoreq.470 nm; and the sensitivity of said blue-sensitive silver halide emulsion layer at 480 nm is not more than half of the sensitivity at said wavelength .lambda..sub.B. Preferably, the maximum sensitivity wavelength .lambda..sub.G of said green-sensitive layer is in the range of 530 nm.ltoreq..lambda..sub.G .ltoreq.560 nm and the sensitivity of said green-sensitive layer at the wavelength of 500 nm is not less than one-fourth of the sensitivity at SG.sub.max ; the maximum sensitivity wavelength .lambda..sub.R of said red-sensitive layer is in the range of 595 nm.ltoreq..lambda..sub.R .ltoreq.625 nm and the maximum sensitivity of red-sensitive layer in the range of 400 nm to 480 nm is not less than 1.5% of the sensitivity of blue-sensitive layer at .lambda..sub.B.

A silver halide photographic material that contains a polymer including a repeating unit represented by the following general formula (I) and having a weight average molecular weight of no more than 30,000: ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group; Z represents the atomic group necessary to form a lactam ring, an oxazolidone ring or a pyrrolidone ring; A is a simple linkage, --CO--, --COO(CH.sub.2).sub.n or --CONR.sup.2 (CH.sub.2).sub.n where R.sup.2 is a hydrogen atom or an alkyl group, and n is an integer of 1-6. This photographic material experiences a minimum level of increase in fogging during rapid processing and produces image having improved sharpness and granularity.

Silver halide photographic material

There is disclosed a light-sensitive silver halide photographic material, having two or more light-sensitive silver halide emulsion layers different in color sensitivities on a support, at least one of the light-sensitive silver halide emulsion layer comprises monodispersed silver halide grains containing 8 to 30 mole % of silver halide in core or contains twinned crystal silver halide grains, at least two of the light-sensitive silver halide emulsion layers different in color sensitivities containing a DIR compound capable of releasing a developing inhibitor or developing inhibitor precursor through the reaction with the oxidized product of a developing agent, the developing inhibitor or developing inhibitor precursor released from the DIR compound being diffusive, wherein the following conditions A:

Light-sensitive silver halide color photographic material having

A silver halide color photographic light-sensitive material having an excellent adhesion resistance and capable of preventing deterioration of quality of processed images is disclosed. The light-sensitive material having a support and provided thereon, the photographic component layers including each at least one red-sensitive layer comprising at least a masking cyan coupler, green-sensitive layer comprising at least a masking magenta coupler, and blue-sensitive layer, is characterized by that:

Silver halide color photographic light-sensitive material

A negative-working silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said material including a pyrazolotriazole-based magenta coupler and means for forming an unsharp positive image.

Silver halide color photographic material

In a silver halide color photographic material which has red-, green- and blue-sensitive silver halide emulsion layers on a support, the improvement wherein the total thickness of the hydrophilic colloid layers is not more than 18 .mu.m on a dry basis and at least one silver halide emulsion layer contains a cyan dye-forming coupler represented by the following general formula (I): ##STR1## where R.sub.1 is an optionally substituted alkyl, aryl or heterocyclic group; Ar is an optionally substituted aryl group; and X is a group that may be eliminated upon coupling reaction with the oxidized product of a color developing agent.

Growing community of inventors

Hino, Japan

Hiroshi Shimazaki