Agfa-gevaert Ag

Agfa Gevaert Nv

Agfa Corporation

Asfa-gevaert N.v.

Agfa-geuaert

Ralf Buscher

Peter Bell

Hans-Ulrich Borst

Johannes Willsau

Jorg Siegel

Thomas Stetzer

Lothar Rosenhahn

Rainer Scheerer

Lothar Endres

Lydia Simon

Peter Bergthaller

Heinrich Odenwalder

Hans Langen

Michael Missfeldt

Reinhart Matejec

Detlef Brennecke

Heinz Schutz

Jurgen Jung

Joerg Siegel

Heinz Reif

A color photographic film having a support, 2 or 3 red-sensitive, cyan-coupling silver halide emulsion layers, 2 or 3 green-sensitive, magenta-coupling silver halide emulsion layers, 2 or 3 blue-sensitive, yellow-coupling silver halide emulsion layers, conventional interlayers and protective layers together with a yellow filter layer arranged closer to the support than the blue-sensitive layers, wherein at least one green-sensitive silver halide emulsion layer is arranged further away from the support than all the other photosensitive layers, exhibits improved sharpness without color distortion if at least 50% of the projected surface area of the silver halide emulsion of the green-sensitive silver halide emulsion layer, of which there is at least one, consists of tabular silver halide grains having an aspect ratio of at least 3.

Color photographic film

A colour photographic material in which a package of layers is provided which consists, in the stated sequence, of (a) a silver halide-free layer containing colour coupler, (b) a layer containing silver halide and (c) a silver halide-free layer containing colour coupler, wherein at least one of layers (a) and (c) consists to an extent of at least 20 vol. % of a synthetic polymer, is distinguished by an improved grain/sensitivity ratio.

Color photographic material

A multi-layer color photographic recording material having at least one photosensitive silver halide emulsion layer containing a color coupler contains in at least one photosensitive silver halide emulsion layer a non-diffusing, 2-equivalent color coupler which, under chromogenic development conditions, by coupling with a color developer oxidation product, releases a photographically inert ballast group from the coupling site and so forms a dye removable by rinsing which makes no contribution to color density. In a preferred embodiment of the invention, the non-diffusing, 2-equivalent color coupler which, under chromogenic development conditions, by coupling with a color developer oxidation product, releases a photographically inert ballast group from the coupling site and so forms a dye removable by rinsing which makes no contribution to color density, is a cyan coupler, for example a naphtholic or phenolic coupler, which is preferably located in the most highly sensitive sub-layer of a green-sensitive silver halide emulsion layer unit consisting of two or more sub-layers. The material exhibits an improved sensitivity/grain or gradation/grain relationship.

Color photographic recording material containing a non-diffusing,

A color negative film having a support, at least one blue-sensitive, yellow-coupling silver halide emulsion layer, at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer, wherein at least one of the color-sensitive silver halide emulsion layers consists of at least two sub-layers of differing photographic sensitivity, the coupler application rate in the most highly sensitive layer of the color sensitive silver halide emulsion layer, of which there is at least one, consisting of at least two sub-layers of differing photographic sensitivity, is no more than 0.05 mmol/m.sup.2 and a development-promoting compound or a compound from the range of ETAR couplers and ACR couplers is used in the same or an adjacent layer, which compound, on reaction with the developer oxidation product (DOP), releases a development-promoting compound from the range of electron transfer agents (ETAR) or of binding groups having an affinity for silver (ACR), is distinguished by an improved grain/sensitivity ratio.

Color negative film

A color photographic recording material having at least one red-sensitive silver halide emulsion layer unit with which a cyan coupler is associated, at least one green-sensitive silver halide emulsion layer unit with which a magenta coupler is associated, at least one blue-sensitive silver halide emulsion layer unit with which a yellow coupler is associated, and optionally further light-insensitive layers, the blue-sensitive silver halide emulsion layer unit of which comprises at least two blue-sensitive partial layers which are sensitized with sensitizing dyes in such a way that a sensitivity curve ensues which is characterized by the following parameters:

High-speed color photographic recording material having increased

A color photographic silver halide material having at least two red-sensitive, cyan-coupling silver halide emulsion layers of different photographic sensitivity, at least two green-sensitive, magenta-coupling silver halide emulsion layers of different photographic sensitivity and at least one blue-sensitive, yellow-coupling silver halide emulsion layer, and having intermediate layers at least between silver halide emulsion layers of different color sensitivity, wherein at least one color coupler is provided in an intermediate layer which is directly adjacent to a lowest-sensitivity silver halide emulsion layer which is sensitive to a defined spectral region and which couples to the complementary color, which color coupler couples in a non-complementary manner with respect to the aforementioned lowest-sensitivity silver halide emulsion layer, is distinguished by its improved reproduction of yellow color shades.

Colour photographic silver halide material

A color photographic silver halide material having at least two blue-sensitive, yellow coupler containing silver halide emulsion layers, at least two green-sensitive, magenta coupler containing silver halide emulsion layers and at least two red-sensitive, cyan coupler containing silver halide emulsion layers together with conventional interlayers and protective layers, wherein photosensitive layers of identical color sensitivity differ with regard to the photographic sensitivity thereof and the more highly sensitive layers are arranged further away from the support than the less sensitive layers of identical color sensitivity, which material contains, in a layer which is arranged further from the support than the most highly sensitive, blue-sensitive layer, both at least one yellow coupler and at least one magenta or cyan coupler, is distinguished by improved grain and sensitivity combined with very good color reproduction.

Color photographic silver halide material

A colour photographic recording material having camera sensitivity, possessing on a transparent support at least one silver halide emulsion layer unit which is sensitive to part of the visible spectrum and consists of at least the following constituent layers:

Colour photographic recording material

A photographic silver halide material in which the silver halide emulsion layer of at least one silver halide emulsion layer is stabilized with a compound of the formula (I):

Photographic silver halide material

A color photographic recording material having a film support and, arranged thereon, at least one red-sensitive silver halide emulsion layer containing a cyan coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, at least one blue-sensitive silver halide emulsion layer containing a yellow coupler and optionally further non-photosensitive layers contains, in addition to conventional sensitizing dyes, in at least one of the red-sensitive silver halide emulsion layers thereof and in at least one of the green-sensitive emulsion layers thereof at least one cyanine dye in each layer having an absorption maximum in a methanolic solution in the range from 515 to 550 nm, wherein the absorption maxima of the additional cyanine dye in the red-sensitive silver halide emulsion layer and of the additional cyanine dye in the green-sensitive layer, in each case measured in a methanolic solution, are no more than 10 nm and preferably no more than 5 nm apart. In a preferred embodiment, the additional cyanine dye in the red-sensitive silver halide emulsion layer is identical to the additional cyanine dye in the green-sensitive silver halide emulsion layer. The recording material exhibits improved sensitivity and improved color reproduction.

Color photographic recording material having elevated sensitivity and

A color photographic silver halide material contains on a support at least one red-sensitive, cyan-coupling, at least one green-sensitive, magenta-coupling and at least one blue-sensitive, yellow-coupling silver halide emulsion layer together with interlayers between layers of different colour sensitivity, wherein at least one of the stated interlayers contains at least one masking coupler, the masking coupler having a reaction rate constant for the coupling reaction with the developer oxidation product of .gtoreq.5000 1-mol.sup.- .cndot.s.sup.-1, is distinguished improved sensitivity without increase of granularity.

A colour photographic silver halide material with at least two blue-sensitive, yellow-coupling silver halide emulsion layers of differing photographic sensitivity, at least two green-sensitive, magenta-coupling silver halide emulsions layers of differing photographic sensitivity and at least two red-sensitive, cyan-coupling silver halide emulsion layers of differing photographic sensitivity, at least one interlayer Z-1 below the lowermost red-sensitive silver halide emulsion layer and/or at least one interlayer Z-2 below the lowermost green-sensitive silver halide emulsion layer, in which material a coupler is additionally used in at least one silver halide emulsion layer, which coupler couples to yield a colour which is not complementary to the spectral sensitisation of the layer concerned, and Z-1 and/or Z-2 contain a silver halide emulsion which has tabular grains with an aspect ratio of &gt;2, an average diameter of a sphere of equal volume of .gtoreq.0.3 .mu.m and a diameter of a circle of equal projected surface area of the tabular grains of .gtoreq.0.3 .mu.m, is distinguished by improved sensitivity and an improved sensitivity/grain ratio.

Color photographic recording material

A color photographic silver halide material having at least one silver halide emulsion layer, which is stabilized with a compound of formula (I) or (II) ##STR1## where X represents O or NR.sub.2

A color photographic silver halide material which contains as photosensitive layers on a support at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, in which, above a photosensitive layer (seen from the support outwards), at least one further layer is provided which contains a colorless compound or combination of colorless compounds, which under processing conditions after exposure gives rise to a uniform, slight color density of a predetermined color and predetermined density over the entire surface, allows correction of the print densities without sensitivity being reduced.

The grain/sensitivity ratio of a photographic silver halide material may be improved by adding a compound of the formula I to one of its layers. The material moreover exhibits a low increase in fog on storage. ##STR1## in which: Y.sub.1, Y.sub.2, Y.sub.3 each mean one of the following residues ##STR2## R.sub.1 to R.sub.34 mean H, alkyl or aryl; two residues (R.sub.1 to R.sub.34) located on the same N atom may complete a 5-, 6- or greater-membered ring containing at least one N atom and optionally further heteroatoms; two residues (R.sub.1 to R.sub.34) located on adjacent N atoms may complete a ring involving both N atoms and at least one P atom;

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Lohmar, Germany

Ralf Buscher