DE2036213A1 - Additive colour photographic material - with silver mixed halide emulsion contg pptn nuclei on multicoloured screen - Google Patents

Abstract

Photosensitive emulsion with Ag halide crystals contg. at least 2 halides i.e. iodide, bromide, chloride and Ag pptn. nuclei is used on surface of multi-coloured screen of material for additive colour photography. Due to different physical character, positive image derived from unexposed crystals has greater covering power than negative image derived from exposed crystals. Presence of pptn. nuclei in emulsion, rather than adjacent layer, improves Ag utilisation.

Description

D e ctio n on the patent report light-sensitive Photographic Recording Material The present invention is in the field of photography; it applies in particular to photographic products and processes for color reproduction based on the principles of additive color photography.

In general, color photographic reproductions can be made by using a photosensitive material, e.g. a photosensitive silver halide emulsion, exposed through an optical rester, the filter or raster elements with selected Like filter media, radiation modulation has selectively predetermined parts of the electromagnetic Radiation spectrum from the visible range let through. The color information recorded in this way is read or evaluated, by passing the resulting image in the light recording material through the same. or a similar grid is considered in a suitable assignment to the image. For reproduction of a colored object according to the principles of additive color photography the individual filter media or grid elements that make up the optical grid, constructed to allow selective filtering of predetermined portions of the visible electromagnetic spectrum, which essentially have their red, blue and green areas correspond; the color information is recorded after point-by-point skinning of the modulated by such a residual element Sctinic radiation on the light-sensitive recording material in question. The visual reproduction of the information content recorded by the recording material takes place by reading out the impinged or imprinted on the modulating image by the original or an essentially identical grid element in more detail Assignment to the image recording.

So you know how to achieve an additive color photographic reproduction, by using a recording material, preferably a light-sensitive silver halide emulsion, exposed by an additive color raster of numerous groups of filter media or has residual elements that consist of individual additive colors like red, blue or green exist and by looking at the emerging photographic Image, preferably a silver image, without the development of such an image by the same or a substantially identical Paster element that is appropriate Way is arranged.

Although for the recording of color information the recording material and the optical remnant have separated elements that are different from one another can that during exposure and viewing appropriately each other are assigned, and the optical grid element temporarily or permanently on the surface of a transparent support can be arranged opposite the one who has the light-sensitive recording material, it is for practical purposes the permanent arrangement of the recording material in direct direct contact to the color grid during the. Exposure preferable for maximum accuracy of the resulting image recording.

After exposure of the photoresponsive material through the transmitted and actinic rays filtered by the optical grid, the resulting exposed element can be further developed, if necessary, in accordance with the selected materials and in general with regard to the filter residue, if this last element for the developer fairs and for selected ones Components is stable or is protected from them.

Such protection or stability is usually reinforced and makes it easier if you have the leftover filter between a transparent one for the Developer solution impermeable carrier layer and the photosensitive recording material orders, especially if in such a. Arrangement additionally the present a barrier or

an impermeable layer for the developer or the developer solution provided between the grid and the photosensitive recording material is.

After selective exposure of the preferred photosensitive, for example Recording material, i.e. photosensitive silver halide, can use the resulting exposed material in the same way as black and white photographic film to be developed. The exposed emulsion can thus with the usual development processes are developed, whereby exposed silver halide crystals are reduced. in the In general, such a development takes place by the exposed emulsion with a Solution is brought into contact, which a usual developer substance, e.g. a or contains several developer substances or developer preparations, such as sio z.3. in chapter 14 of the book "The Theory of the Photographic Process (revised Edition, 1954) C.E.K. Measuring; the McMillen Co., New-York, NY. "and in the chapters VI, VII, VIII and IX of "Photographic Chemistry, Volume 1; P. Glefkides; Foundation Press, London / England ".

The preferred developer substances generally include organic ones Compounds and especially organic aromatic compounds that at least contain two hydroxyl and / or amino groups1 in which at least one of these Groups in an ortho or pars position to at least one other such group e.g. the various known hydroquinones, p-aminophenols, p-phenylenediamines and their various known functional homologues and analogues, The developer fairs, which contain the special silver halide developer substances generally an aqueous solution and additionally at least one alkaline material like sodium hydroxide or sodium carbonate and they can with the exposed Silver halide material using the usual shelf, tank or similar development processes be brought into contact.

The developer can additionally and optionally one or more specific Silver halide developers, protective agents, alkalis, retarders, accelerators and the like. Included. The concentration of the various components used can vary over a wide range and, if desired, one or several of these components in the photosensitive element prior to exposure in a separate permeable layer of such an element and / or in the Emulsion be arranged, which the light-sensitive silver halide material itself contains.

The emulsion can be used to stabilize the developed image with the usual known fixing, washing and / or drying processes are stabilized, as for example in Chapter XI of "Photographic Chemistry", Volume I, l.e. 1c and in Chapter XVII of "The Theory of the Photographic Process, ..c." are described. For example, the photosensitive material which the developed image contains, be brought into contact with an interruption bath from Aufang sn, which the effect of the developing substance on the light-sensitive emulsion is thereby terminated, that the pH of the emusion is changed to a value at which the silver halide developer in question or these substances have essentially no developer function. If it In particular, the silver halide developer substance is an organic one Compound acts that its evolving property in an alkaline pH range deflated, e.g.

a hydroquinone or the like. So the emulsion with an acidic Interrupt bath brought in contact as long as that effective the silver halide development potential the developer in question is neutralized. The emulsion can dsnn in A fixer can be brought to unexposed it light sensitive silver halide from the emulsion in the usual way. In general, the fixing agent contain a bath of a silver halide solvent such as sodium sulfate which is effective essentially all types of silver halide from the Emulsion layer removed originally contained in the photosensitive silver halide layer were without damaging the developed silver image. After fixing all remaining traces of the fixative can be removed by a water bath, to ensure the durability of the developed image.

When positive silver image formation is desired, i.

an image in correspondence with unexposed portions of the emulsion, There can be a usual reversal development, or there can be a direct positive one Apply emulsion or the positive image can be done by diffusion transfer development are formed.

In the case of the first alternative, the reverse development can be in the usual Manner by developing the exposed emulsion by methods known per se take place, the development of the latent image resulting from the exposure, e.g.

according to the method described above. After development the latent image eu a visible silver image know the developed one Image can be effectively removed in a conventional manner such as touching the image with the usual known means by which a photographic silver image is removed can not be unfavorable without doing so.

to affect exposed, photosensitive silver halide, e.g. by bleaching agents and bleach baths, as described in Chapter XXX of "Photography Chemistry", Volume II; 1.c. described are. After removing the developed Images, for example by bleaching, can be the photosensitive remaining in the emulsion Silver halide by physical fogging, for example by exposure with actinic rays and / or by chemical fogging, for example by contact with a conventional fogging agent or the like can be transferred to a developable state, and in turn the resulting veiled or clouded silver halide developed and, if desired, in stabilized in the above-mentioned manner in order to produce the required positive silver image to surrender.

In the case of the second alternative mentioned above, the required positive silver image formation can be achieved by using a conventional direct positive silver halide emulsion which, directly in the presence of a fogging agent following the procedures outlined above can be developed to produce the required sets positive silver image formation.

In the third alternative mentioned above, positive silver image formation occurs by diffusion transfer development, being by development in the photosensitive The latent image produced by silver halide emulsion essentially develops simultaneously with the development a soluble complex is obtained, for example by reaction of a silver halide solvent with unexposed and undeveloped Silver halide of the emulsion. Of the resulting soluble silver complex can, at least in part, be moved towards a suitable image pickup element and the silver of the complex in this element are precipitated where mon diX is desired positive silver image formation achieved. Those obtained according to the previous alternatives positive silver images, according to the latter embodiment a silver transfer image, can be viewed through the same or a similar color grid element, which is appropriately associated with the positive silver transmission image and is on the image receiving layer.

In either alternative, the preferred film units include one panchromatically sensitized photographic emulsion immediately adjacent to a Surface of a multi-colored additive color grid, which, as with the last alternative mentions the image receiving element between a photographic emulsion and the Color halftone can contain either with or without a stripping layer that is between the: image-receiving layer and the emulsion layer may be arranged around the separation of the emulsion layer after transfer formation. The usage of the preferred composite film enables exposure of the emulsion through a color screen as well as through a transparent carrier that may be present, and the formation of the desired positive silver image in direct contact with the color grid during exposure. Such an embodiment makes for viewing the Assignment of the Fsrbrastera to the resulting positive silver image superfluous because the screen used for exposure is also used for viewing can be, and automotive in the correct assignment to the positive silver image is located.

Of the three alternatives mentioned above, the formation of the positive image through diffusion transfer development clearly the first alternative it is superior to the second embodiment because of the easiness of developing superior because of the higher photographic speed practically available.

In U.S. Patent 2,614,925 the formation of a positive is Silver transfer image by a multicolor additive diffusion transfer reversal process described. A silver halide emulsion layer is replaced by an additive Color residue is exposed, and the emulsion layer from contact with the rest of the Image unit separated after developing, while the filter medium and the receiving layer are layered stay in touch with each other. According to a preferred method described in the United States patents 2,726,154 and 2,944,894 are used in a diffusion transfer reverse process a multi-layer composite film exposed through a grid, the numerous very many has small optical elements and photosensitive and image receiving layers wearing. According to these patents, the transfer development of the exposed Films are done by looking into the exposed composite film a developing liquid can penetrate, the image receiving layer in permanent contact with the grid remains during and after the formation of the required transfer image, and men the light-sensitive layer of the rest of the film unit according to your needs the transfer formation separates.

According to US Pat. No. 2,712,995, the direct formation of a positive silver image by using a spontaneously developable silver gel dispersion can be achieved, this is a silver salt dispersion, such as silver oxalate, silver stearate, Silver ferrocysnide or certain silver chloride dispersions that do not contain BroMidionen coming into contact with, or being exposed to actinic rays, directly can be reduced to elemental silver and thus no puncture of point-by-point furling are of actinic radiation. In this known arrangement, the imaging, spontaneously developable silver gel dispersion the minimum concentration of photosensitive Silver bromide, which is required to make the silver bromide crystals after development in the absence of bromide and as a pole of exposure in the required concentration To set bromide ions in freedom to a spontaneous image-wise development of the silver salt dispersion initiate. As mentioned in the patent, the spontaneous development reaction the silver salt dispersion can be strengthened by adding substances that act as nuclei act for the reaction and through the use a developer solution, which contains a silver halide solvent such as sodium sulfite. How however in U.S. Patent 2,937,945 show the silver images thus obtained the disadvantage that the white areas are affected by the negative image that is formed from the photosensitive material, i.e. the silver bromide dispersion. It is therefore necessary to carefully keep the amount of silver bromide so small as possible to keep the visible silver image that originated from the Development of such a material does not exceed the critical value, that is necessary for the effective use of the resulting image The last U.S. patent mentioned above relates to an improvement in quality of the resulting image is enhanced by making the spontaneously developable one Silver salt dispersion and the photosensitive silver bromide dispersion in separate Arranges layers, keeps them in contact during development, but they nech the formation of the positive silver image separates from each other.

From the French patent specification 53 513, third additional patent to French patent 873 507, it is known that a primary negative Image and a secondary positive image can be made by making a Silver halide emulsion exposed, which contains silver precipitating substances, and successively the emulsion thus exposed first with a silver halide developer set which does not contain a silver halide solvent, im individual a chromogenic developer solution containing a silver halide solvent, so that after the removal of the metallic silver images, a colored positive Image forms.

For various reasons explained in more detail below, it would be However, particularly desirable if one could make a composite film that had a Contains optical raster element, on one surface of which a photosensitive recording material is located that directly a positive silver image can form and sensitive to incident electromagnetic radiation and to accurate image mapping is capable of being necessary in order to have a color photographic Image reproduction based on the principles of additive color photography.

It is therefore an object of the present invention to provide new and to indicate improved photographic products, preparations and processes that are special for the photographic reproduction of an object in color and in particular are suitable according to the principles of additive color photography.

Other objects of the invention are in part self-evident, in part can be found in the following explanations.

For a better understanding of the essence of the invention, reference is made to the following Description, taken together with the accompanying drawings.

1 is a schematic illustration, enlarged in cross section the assignment of elements that constitute an embodiment of the invention; the thickness of the various materials is exaggerated.

Fig. 2 is a photomicrograph of a uniform positive and negative silver image in a surface of a silver image according to the invention maximum densities at a magnification of 1,280 times.

Figure 3 is a photomicrograph of a positive diffusion transfer silver image in a corresponding maximum density area of a silver transfer image U.S. Patent 2,861,885; Magnification 1280 times.

Fig. 4 is a photomicrograph of a uniform negative and positive silver image in an area of minimal density of the silver image according to the present invention; Magnification 1,280 times.

Figure 5 is a photomicrograph of a negative silver image in a corresponding area of maximum density of the light-sensitive silver halide emulsion layer a silver diffusion transfer film disclosed in U.S. Patent No. 2,861,885; enlargement 1,280 times.

Figure 6 is a photomicrograph of a minimum density area one negative silver image of the light-sensitive silver halide emulsion layer Silver diffusion transfer film according to U.S. Patent 2,861,885 (enlargement 1,280 times); this area. complements the area of maximum density e of the silver overexcitation image 3 to a uniform composite image, which as a reflection image or by Supervision is to be considered.

As mentioned earlier, a silver diffusion transfer reversal process can be used obtain a positive silver transfer image by developing the latent image, which one on a photosensitive silver halide emulsion by exposure and can be obtained essentially simultaneously with this progressing development, wherein a soluble silver complex by resection of a silver halide solvent with unexposed and undeveloped silver halide of the emulsion. The resulting soluble silver complex becomes, at least in part, towards transferred to a suitable image recording element and there, the silver of the Complex precipitated so that the necessary positive silver image formation is achieved.

The silver receiving layer can also be formed so that it has a forms an unusually effective silver precipitating environment which causes itself dat silver is reflected in it, compared to negative silver, which is in the silver halide emulsion is being developed, and thus an extraordinary one high opacity possesses, i.e. a very strong haze or opacity per given mass of reduced silver. See H. Land, "One Step Photography, Photographic Journal, Section A; "pages 7-15, January 1950.

In particular, in order to obtain such an environment, silver precipitating agents can be used Germs in the silver receiving layer can be arranged in tufts that have a diameter which is directly proportional to the mass of the in situ to be deposited by reduction Silver is. Such an adjustment can be used to keep picture silver together with the silver precipitation core tufts of the required density and size which is directly related to the physical parameters of the tufts stands. The so precipitated in situ in shears from selected physical parameters Image silver results in an image formation in which the elemental silver of the image receiving element can have a very high opacity, e.g. 5 to 15 times or more of the negative elemental image silver in the silver halide element.

It is known from US Pat. No. 2,861,885 that composite images, the contain both negative and positive images stacked on top of each other, in simple Way can be made by silver diffusion transfer reverse process, by using a light-sensitive silver halide emulsion which, according to the full development of their exposed areas as a result of exposure a relative low maximum density im negative silver image compared to one has high maximum density of positive silver image; this is due to a precipitating silver Environment of the type described above is achieved. In a composite image, which after the specifications of this patent has been produced, the opacity is one given wetness of image silver in the image pickup element 14 to 15 times one equal mass of image silver in the silver halide element and consequently can a maximum negative density of up to 1.0 density units is permitted for a transparency while the maximum positive density is about four to several times greater.

It has now been shown, surprisingly, that a recording material, specifically a photosensitive silver halide emulsion that is rigid immediately rests against an optical grid element, can be used so that one is in accordance with the principles of additive color photography a direct positive visual Silver image is obtained, which has the accuracy required for good color reproduction owns. For this purpose, the emulsion is prepared in such a way that it precipitates silver Contains cores which are dispersed in a concentration such that after the Exposure and development with its developer, which is a silver halide developing agent and contains a silver halide solvent, gives a positive silver image, which is derived from unexposed silver halide crystals, the have a greater opacity than the negative silver image that was exposed Derives from silver halide crystals.

As we know from the photographic literature, it becomes physical developed silver is reduced directly from a liquid phase during development and it essentially contains relatively compact grains. In contrast, arises "Chemically" developed silver directly from all known conventional processes exposed silver halide crystals and essentially comprises image silver, in the general form of "fibers" or "threads". The opacity, i.e. the optical Density per gram of silver per square meter of the resulting silver image is in each Case a function of the aggregation and consistency of evolved silver. It can generally be considered inversely proportional to the diameter of the particle or aggregated kernels, regardless of considerations regarding the aggregate formation.

With the usual development methods, it does not matter whether it is the so-called "physical" or "chemical" development takes place both Types of development take place to a certain extent. Here is the "chemical" development characterized by the fact that the greater part of the developed elemental Silver differs from the direct chemical reduction of exposed silver halide crystals derives, while there is only an essentially insignificant proportion of the developed elemental Silver derives from solution in the physical environment. The reverse is the "physical." Development characterized by the fact that there is a predominant proportion of evolved silver derives from the direct dissolution of physical surroundings and only a minimal amount of the resulting silver image differs from the chemical Development derives.

In accordance with the unexpected result of the present However, a light-sensitive silver halide emulsion can be produced in which one as a result of exposure after development in the presence of a Silberhlogenid-solvent an image formation with elemental silver one so far of an unknown character. In detail it has surprisingly been shown that picture silver, that differs from direct development in the presence of a silver halide solvent derives, and that 'in exposed silver halide crystals contain an emulsion which has been prepared as follows, i.e. exposed silver halide crystals, to which an effective concentration of silver precipitating nuclei is directly assigned is characterized by the practically complete absence of a "fiber" or "thread" match. The image silver correspondence obtained in this way is im essentially limited to elemental silver grains or particles with a diameter, which is substantially equal to the original diameter of non-exposed photosensitive crystals that make up the emulsion. The reinforcement of the negative silver image produced in this way, up to an optical density above that achieved with more elemental silver image particles or grains of one diameter which is directly comparable to the crystal diameter of the original Emulsion, is generally in the range of a particle size of about 1 to 3.5μ for very light-sensitive photographic materials. This is on a larger scale Image grain diameter as a direct result of crystal surface growth or sui the 'formation of elemental silver fibers or threads. It has has now shown that this phenomenon can be effectively prevented by development of the silver halide crystals of the exposed emulsion in direct intimate contact with silver precipitating nuclei, which are present in an effective hindering concentration with a developer containing a silver halide solvent.

Photosensitive, highly sensitive silver halide emulsions that commonly used for photographic reproduction purposes are characterized by the equivalent of photoresponsive silver halide crystals that Have actively sensitized centers or bodies believed to be they have very small aggregates of silver sulfide. This sulfide derives itself of active sulfur, which is naturally present in the polymer from the start matrix is present, e.g. in a gelstine matrix, or that of the batch during manufacture has been added. For optimal sensitivity it should be limited but effective Number of sensitivity points or active centers in each crystal, in particular be present on the crystal surface. After exposure through incident electromagnetic actinic rays on the crystals are believed to be photons are absorbed by the crystals, which are photoelectrons inside the crystals form that can diffuse to the sensitivity points that lower a Have conductivity bond level and such places with a negative charge appearing in these places as elemental silver fail, with originally free silver ions arranged within the crystal lattice was. Provides the most exposed silver halide crystals during development the silver halide developer, a reducing agent, additional electrons, which serve to cause the precipitation of additional silver ions of the crystals, what about the extrusion of fibrous or filamentary elemental silver on the surface of the points of sensitivity leads to a process that extends to complete reduction the crystals continues.

The presence of the silver precipitating nuclei immediately next to the silver halide crystals during the development process causes essentially the extrusion of the microscopic elementary silver fibers or threads over the crystal surface with the associated Result of the narrowing of the image grain size to that of the crystal prevented will. As a result, the opacity of the resulting negative image is in everyone Case limited to the opacity exerted by elemental silver grains or particles with a diameter substantially equal to that of the original Crystals dispersed in the light sensitive matrix; also missing the gain due to the increase in diameter of the usual negative picture elements, which can be traced back to thread-like picture silver.

In order to ensure the formation of a positive image with high opacity The silver precipitating nuclei are within the light-sensitive silver halide emulsion arranged in a concentration per unit area that effectively causes image silver, which derives from unexposed silver halide crystals to produce the desired To have turbidity per given mass of in situ reduced silver.

Reference is now made to the microphotographs of FIGS. 2 through 6, which explain further details of the present invention. Fig. 2 is a photomicrograph with a magnification of 1,280: 1 of uniform positive and negative Image silver in an area of maximum density and manufactured according to the present invention Invention. It became a.

Used film or film unit that conforms to the following was manufactured and developed. For direct comparison with the results that are shown in the photomicrograph according to FIG. 2, the photomicrograph is used after Fig.

3 with the same magnification rule. It is positive Diffusion transfer image silver in a. he corresponding area of maximum density. This film was made in accordance with U.S. Patent 2,861, referenced above 885 manufactured and developed according to the following information. By comparing the Both microphotographs show that the opacity of the image on the according to the invention produced film markedly that of the comparative film by a much larger one Exceeds the edge area. You can also see that the high opacity of the film according to FIG. 2 largely due to the unexpectedly effective utilization of silver The mathematical considerations are set out below.

In Fig. 4 is a photomicrograph of uniform negative and positive image silver in a minimum density area of the film unit of FIG shown with the same magnification rule. Also here are for direct comparison the results of the photomicrographs according to FIGS. 4 and 5 are compiled, the latter a negative image silver in a corresponding area of maximum density from the Represents silver halide emulsion of the film of Fig. 3 at the same magnification. Analogously to the comparison of FIGS. 2 and 3, the show rig. 4 and 5 clearly shows the undesirable high negative opacity of the image according to FIG Above mentioned amplification of the negative image compared to the image according to Fig. 4 in a photographic material according to the invention.

Thus, FIGS. 2, 3, 4 and 5 not only show in direct comparison the larger optical sealing range that can be achieved according to the invention, i.e. an extended signal to noise ratio, but also additionally the lower density or disturbance value achieved according to the invention can be.

The gain is directly from the photomicrograph according to FIG. 6 the optical density of the negative filamentary image silver formation in an area minimum density of the silver halide emulsion layer of the film unit of Fig. 3 at the same magnification as the previous microphotographs Ablesber, the emulsion layer directly on that shown in FIG Area of maximum density, with a composite silver transfer image or a composite silver transfer image.

According to the invention are therefore light-sensitive silver halide crystals or grains, dispersed in an environment, provided the silver precipitating nuclei or contains substances which, in the equivalent of a solvent developer, the reduction bleached grains to opaque or cloudy structures cause, whose presented area is smaller than the area of the same grains, which in an identical developer, but without such precipitating cores are. Image silver masses developing from exposed silver halide grains according to the indications of the present invention, derive, possess a low optical Opacity compared to the opacity that results from identical grains, those in the same solvent developer, but without the precipitating environment, have been developed. In particular, the present invention teaches manufacture a direct positive silver image in which the mass distribution of silver in the is essentially macroscopically uniform and microscopically uneven and in the permeability of the silver image mass. a function of the amount of actinic Is radiation to which the photosensitive silver halide has been exposed. The exposed silver halide grains appear as compact measurements with low opacity reduced in situ, with simultaneous in situ reduction of unexposed silver halide grains takes place as colloidal dispersions with high opacity. So with the help of present invention in situ generated positive silver image is characterized by extraordinarily high sharpness compared to transmission methods in which unexposed silver halide grains dissolved and ultimately on the image carrier layer be transmitted.

According to a particularly preferred embodiment of the present invention the emulsion carrying that silver image is prepared by essentially adding a microscopic shifting or shifting of the image correspondence thereby avoided will indicate microscopic migration or diffusion of picture elements within the polymer matrix is prevented. In general 'can usual photographic Picture elements usually have a microscopic dynamic system without serious ones Cons of the usual use of the image included. However, for special exact color reproductions according to the principles of additive color photography the microscopic Displacement or displacement of picture elements is preferably avoided in order to achieve a maximum accuracy of image recording with the appropriate individual optical Filter elements to achieve the additive color grid that the image carrier element assigned. In detail, it has been shown that a light-sensitive silver halide emulsion, their photosensitive silver halide crystals in a polymeric binder are dispersed, which has a grid that is essentially a microscopic Displacement or migration or diffusion of image silver prevents color reproduction accuracy which is particularly desirable for good color reproduction in that described above Way.

The desired lattice of the polymeric binder is easily obtained by selecting a polymeric material that has the property of image components to fix enough in the room. One also knows for this purpose Select polymeric material that has been modified in this way, e.g. by crosslinking and / or Hardening that the desired spatial fixation of the image components results, i.e. one Rigidity for positive image components in association with the individual optical filter elements the color screen through which the photosensitive emulsion was exposed. For example, the preferred polymeric binding material, i.e. gelatin, is well known Contact with common hardening agents are hardened to such an extent that the desired Rigidity of the photographic image is achieved. If desired, certain particulate materials, which increase the penetration of the developer into the light-sensitive element, without damaging the lattice of the polymer matrix in the photosensitive element to facilitate development of the element.

In a preferred embodiment of the present invention the light-sensitive silver halide emulsion prepared according to the following information, that one has a differential or a difference of 1.5 density units between the maximum image density of the developed negative silver image and the maximum Image density of the developed positive silver image is preserved. In a particularly preferred one In the embodiment, the light-sensitive silver halide emulsion is prepared in such a way that that one has a maximum density of less than about 0.5 and especially less than about 0.3 density units after developing completely exposed areas of the emulsion obtained; this emulsion also contains silver precipitating agents Cores in an effective concentration so that there is a maximum image density of more than about 2.0, and especially more than about 2.4 density units according to the Development of unexposed areas of the emulsion results. With this preferred In the embodiment, the silver halide emulsion does not normally contain less as 50 mg / 0.09 m² (50 mg / ft²) silver halide on a silver weight basis, preferably as mixed silver halide and especially as silver iodobromide, especially the one which, based on the weight of silver, contains 1 to 9% iodide, dispersed in one permeable colloidal binder.

In the preferred embodiment, this is sufficiently hardened gelatin, thus the last mentioned optical parameters and a hydration factor adjusts, on the basis of which the emulsion after contact with the aqueous developer solution preferably has a pH greater than about 12 and therefore within a period for less than about 15 seconds a greater swelling than their surroundings or normal size prevented.

In Fig. 1, there is schematically an enlarged cross section of a film unit shown according to a preferred embodiment of the invention. The film unit includes a flexible transparent film base or carrier 10 on one of which Surface is in the following order: An additive Color grid 11 filtering with a geometrically repeating multitude of actinic rays colored elements including a group of primary red colored filter elements, a group of primary blue-colored filter elements and a group of primary green colored filter elements, arranged in repeating distribution page next to side essentially in one plane and a light-sensitive silver halide emulsion 12, in which silver-precipitating nuclei are dispersed or distributed.

The light-sensitive material of the photographic emulsion 12 contains preferably, as already mentioned, a crystal of a silver compound, e.g. or several silver halides such as photosensitive silver chloride, silver iodide, Silver bromide or mixed silver halides, such as silver chlorobromide or silver jobromide with changing halide ratios and changing silver concentrations, dispersed in a binder material that is permeable to the developer, the additionally precipitating silver Contains substances that are given in the emulsion in an effective concentration are, so that an elementary silver strongly susceptible environment results is responsible for the fact that elemental silver is deposited in it, depending on from the unexposed areas of the emulsion as a result of its point-by-point exposure in comparison to exposed areas of the emulsion, which have a high hiding power, i.e. a strong turbidity per mass passed sn of reduced silver, in the in general, silver precipitating nuclei comprise a particular class of general known auxiliaries, which are a catalytic reduction of solubilized Effect silver halide Qd. In detail it concerns heavy metals and heavy metal compounds, such as metals of Groups IB, IIB, IVA, VIA and VIII and the reaction products of Group IB, IIB, IVA and VIII metals with Group VIA elements.

They can be effective in a relatively low concentration on the order of about 1 to 25 x 10-6 moles / 0.09 m2 (ft2) can be used.

Particularly suitable silver precipitating substances are in the USA patent 2 698 237. These are metal sulfides and selenides, to which also Selenosulfide, the Polysulfide and the Polyselenide belong to this group preferably sulfides are used, their solubility products in an aqueous medium of about 20 ° C between 10-23 and 10-30, especially the salts of zinc, Copper, cadmium and lead. Heavy metals such as Silver, gold, platinum and palladium are particularly suitable. In this group are those exemplified noble metals preferred and generally in the matrix as contain colloidal particles.

The preferred silver halide photographic emulsion 12 which used for the manufacture of the photographic film unit can be manufactured become by putting one water-soluble silver halide, such as Ammonium, calcium or sodium bromide, preferably together with an appropriate one Iodide in an aqueous solution of a peptizer such as colloidal Gelatin solution. The dispersion is then digested at an elevated temperature Achieve crisis growth. The resulting dispersion becomes undesirable for removal Reaction products and residual water-soluble salts are washed by e.g. of the preferred gelatin mattress material used, the dispersion cools, the settled Dispersion "noodles" and the "noodles" washes with cold water or by making the different flocculation systems and methods used to prevent unwanted Components can be removed, e.g. they are described in the USA patents 2,614,928; 2 614 929 and 2 728 662. Because after-ripening of the dispersion takes place increased temperature in connection with the addition of gelatin or optionally other polymeric materials and various auxiliaries such as chemical sensitizers and the like., instead. All of this is done according to the usual methods used by Neblette, C.B. Described in "Photography Its Materiels and Processes", 6th Edition, 1962 have been.

Then there can be an optical sensitization and preferably one panchromatic sensitization of the silver halide crystals of the emulsion Contact with optical sensitizing dyes. this happens on usual manner as reported by Hemer F.M. in "The Cyanine Dyes and Related Compounds" has been described.

After the optical sensitization, further desired additives can be added such as coating aids and the like. incorporated into the emulsion and the mixture on the color residue 11 according to the usual methods for the production of photographic Emulsions are poured on.

As for the binder for the photosensitive material, so the above-mentioned gelatin can be replaced in whole or in part by another natural and / or synthetic polymeric material such as albumin, casein or zein, furthermore by resins such as cellulose derivatives (see US Pat. No. 2,302,085 and 2 541 474) or replaced by vinyl polymers (see U.S. Patents 2,253 078, 2 276 322, 2 276 323, 2 281 703, 2 301 223, 2 311 058, 2 311 059, 1 414 208, 2,461,023, 2,484,456, 2,538,257, 2,579,016, 1,614,931, 2,624,674, 2,632,704, 2,642 420, 2,678,884, 2,691,582, 2,725,296, 2,753,264 and the like).

The manufacturing process of the paint residue 11 can, as men knows, can be divided into two main classes.

After the first class, Ferbrester can be completely mechanical Produced in a way, e.g. by printing or lining a dyeable substrate, e.g. with a greasy one Printing color according to the desired Filter pattern. Because if the substrate is colored in a suitable way in the areas, which do not have an ink-repellent cover. Then the cover removed and this process according to the desired geometric pattern the filter elements are repeated so often that the desired multiple of the distributed colored filter elements.

A second mechanical method is direct printing the desired color sets on a carrier substrate corresponding to the predetermined Filter pattern. This printing is repeated until the desired Variety of differently colored filter elements results.

A third mechanical method is to deposit an irregular one Filter grid pattern as a thin layer with a random distribution of small grains, like starch grains that are independently of each other with the desired colors for optical Filter effects have been colored.

The second group of color window manufacturing methods includes photomechanical ones Methods of the type originally used e.g. by Ducos Du Hauron in the 19th century have been proposed. In these methods, a suitable one is generally used Support or film base coated with an adhesive on which a photosensitive colloidal mass, e.g. dense gelatin, has been poured on.

Then the photosensitive gelatin layer is covered by incident actinic rays are exposed through a suitable mask that forms an exposure pattern depending on the desired arrangement of optical filter elements. Then differential hardening of the sensitized material will result which causes point-by-point exposure. Unexposed, non-hardened material is removed by contact with solvent and then the remaining is hardened Material subjected to a suitable coloring process so that it first colored form optical filter elements. This method is then more appropriate using Repeated masks until the required number of optical filter element types which are desired in the finished ink residue element.

Mechanical methods of producing paint residues by mechanical means Printing or lining inevitably requires a large number of mechanical Draoketufen to be carried out precisely until you get the desired end product and thus cause relatively high costs. The mechanical manufacturing methods of Mosaic-like color star elements generally inevitably leave the necessary Missing color balance because some areas have too many color particles, that is, as a practical result of attempts at random distribution, static clumping and the application of extremely small colored ones Grains so that as few random aggregates of the same color as possible are formed, wes, however, leads to the additional disadvantage that units produced in this way then make very fine-grain photographic emulsions necessary, and thus on the Use in low sensitivity photographic processes are limited. the Experience has now shown that photomechanical methods of color raster formation increase are preferable, especially because of the cheap mass production for grids that are characterized by sufficient optical accuracy.

Although color rasters are differentiated by traditional contact printing or by Having photomechanical projection processes produced is something special preferred method for the production of color screens in the United States patent 3,284,208. After that, one after the other. the smooth surface of a lenticular Films coated with several photoresponsive layers and in sequence the coatings are subjected to selectively shifted incident radiation which is focused by the lenses through which the rays enter. To this In this way a selective exposure of the coating is achieved. After this exposure the unexposed coating is removed and the resulting residue is colored, creating a series of chromatic filter elements before the next photosensitive layer is applied. Any such exposure derives from the electromagnetic to the lenticular film at an angle shifted collapsing radiation, which is specially designed so that essentially the desired numerous rows of chromatic filter elements Side by side in the manner of a grid, and light of predetermined wavelengths filter.

The line width of the exposure of the light-sensitive layer can be done precisely by appropriately changing the intensity or duration of the incident Control radiation and know the color itself continuously or discontinuously be, whereby in the former case one makes use of an endless or seamless element.

For making the preferred trichromatic additive screens includes exposed area Any light responsive area in general about 1/3 of the layer adjacent to each lens, which absorbs the exposure radiation records. Although all three exposures through on the lens of the. Lenticular Film incident radiation at three separate angles can be achieved. each being the exposure of about 1/3 of the radiation incident through each lens it should be noted that the chromatic Filter formation also through exposure of the final light-sensitive layer diffusing radiation can occur which passes through the lenticular film and which is covered by the previously formed chromatic filter elements. If desired, can be one or more of upon exposure The image groups formed must be overlapped in order to avoid changes in the expanse of the exposed Reduce areas. Though not; it is essential that the exposure through the light entering through each lens under exactly the same one.

if angle is constant to the lens axis, which is between the resulting in incident radiation on other lenses and their respective axes, such is the correspondence between the angular pattern of the incident rays the more precisely, the more precisely the corresponding filter elements are assigned to one another and the more even the resulting color grid.

At a stage after the formation of the first and second series of Filter elements, the lens formation results in a continuous smooth surface. In those cases in which the lenses represent a separate layer, the temporary it is attached to the surface of a support on which the paint residue is formed, such a separate layer can be stripped from the carrier. But if on the other hand the lenses represent a uniform component of the film base or the film carrier, and formed on the base by pressure and / or solvent deformation a continuous smooth surface can be restored by applying a suitable solvent generated, and that during the manufacture of the lenticular Deforming pressure generated on the film base can be canceled to the original shape to restore the base. If for example for the optical transparency if desired, the restored surface can be polished, e.g.

by surface contact with a suitable rotating polishing cylinder or a polishing drum, with it; the desired optical properties the surface of the film base.

Optionally, the outer surface of the multichromatic Rasters with a polymeric protective layer such as nitrocellulose, cellulose acetate and The like. Be coated to the grid before the one caused by the development To protect deformation while using the film unit. The outer surface of the color grid can then be applied to the silver halide emulsion layer 12 will.

A device that is particularly suitable for the exposure to expose the lenticular film produced according to US Pat. No. 3,284,208, is described in U.S. Patent 3,318,220.

The support or film base 10 can be any transparent rigid or flexible carrier material, e.g.

Glass, a polymer film of natural or synthetic origin Act. Flexible, clear synthetic materials are particularly suitable Polymers such as methyl and ethyl polymethacrylate; Vinyl chloride polymers; Polyvinyl acetals; Polyamides such as nylon; Polyester like the polymeric films made from ethylene glycol terephthalic acid derive; polymeric cellulose derivatives such as cellulose acetate, triacetate, nitrate, propionate butyrate, acetate butyrate or acetate propionate; Polycarbonates; Polystyrenes and the like.

The invention is explained in more detail using the following example, however, this example is not intended to constitute a limitation.

The smooth surface of a lenticular film contains a polyester film base, on one surface of which a cellulose acetate butyrate layer with 550 lenses / 2.54 cm (inches), each of which was used to focus the incident rays in converging rays were plan-confex, and a focal length in general in the region of about 100µ in air. As a result of this short focal length objects were made at a distance of more than about 2.54 cm from the lens surface mapped at infinity. This film was on the opposite surface covered with an adhesive mass containing 70 ml of methanol, 1.25 g of nitrocellulose and Contained 30 ml of butyl alcohol. A first layer of gelatin was made by adding 15 % By weight potassium dense chromate (based on dry gelatin) sensitized; she can then applied to the outer surface of the first half-layer. The first The gelatin layer can then be exposed to UV radiation as described above. The resulting exposed support is washed with water, thus removed unexposed sensitized gelatin in accordance with the exposure pattern that was contained in the first gelatin layer. The reticulated or latticed Pattern can then be treated with an acidic dye bath, the 1.17% Direct Red C.I. 81; 0.32% Direct Yellow O.I. 4; and contains 2.95% glacial acetic acid; then becomes excess Dye 'washed off, the whole thing dried and a second adhesive mass, which 70 ml of methanol, 30 ml of butyl alcohol and 1.25 g of nitrocellulose as a coating upset. A second gelatin layer, sensitized by adding 15% by weight Potassium dichromate is poured onto the second adhesive layer; the second photosensitive Gelatin layer can also be exposed to UV radiation as described above will. The second gelatin layer can then be washed with water to remove the remove unexposed photosensitive gelatin in the manner described above. The remaining gelatin layer is stained with an acid dye bath that 0.83% acid, Green C.I. 7; 0.32% Direct Yellow C.I. 4 and 2.86% glacial acetic acid. The net-like or grid-like arrangement obtained in this way can then be washed to To remove excess paint, it is then dried and coated with a third adhesive coated containing 30 ml of butenol, 1.25 g of nitrocellulose and 70 ml of methanol.

A third layer of gelatin, sensitized with 15 wt.% Potassium densitometer, can then be applied to the outer surface of the third adhesive layer and the third light-sensitive gelatin layer with UV rays as specified above exposed will. The third photosensitive gelatin layer can then be washed to form the required gelatin residue and the gelatin residue can then be stained with a solution that is 1.0% blue T contains pine and 1% glacial acetic acid, followed by washing off excess dye will. Then finally the outer surface of the multicolored grid element a protective coating with a mass that contains 70 ml of methanol, 30 ml of butanol and contains 5g nitrocellulose.

After the color grid has been formed, the lenticular layer can be made from Cellulose acetate butyrate is removed from the polyester base and the outer surface of the polymeric protective coating are coated with a mass, the gelatin, deacetylated Chitin and 4,6-diamino-ortho-cresol with a coverage of 3.75 mg / 0.09 m² (3.75 mg / ft²) gelatin, 3.75 mg / 0.09 m² (3.75 mg / ft³) deacetylated chitin and 0.7 0.7 mg / ft² (mg / 0.09 m²) diamino-ortho-cresol. On the outer surface A hardened gelatin-silver iodobromide emulsion can be applied to the gelatin layer containing cadmium sulfide and silicon dioxide, the coating with a Coverage of 200 mg / 0.09 m² (200 mg / ft²) gelatin, 100 mg / 0.09 m² (100 mg / ft²) silver, 0.97 mg / 0.09 m² (0.97 mg / ft²) cadmium sulfide, 0.026 mg / 0.09 m² (0.026 mg / ft²) chrome alum, 0.78 mg / 0.09 m² (0.78 mg / ft²) algin and 200 mg / 0.09 m² (200 mg / ft²) silica is applied. The resulting film unit can then be used with a hardened Gelatin mass with a coverage of 25 mg / 0.09 m² (25 mg / ft2) gelatin, 0.013 mg / 0.19 m2 (0.013 mg / ft2) earomalum, 0.39 mg / 0.09 m2 (Q, 39 mg / ft2) algin and 50 mg / 0.09 m2 (50 mg / ft2) silicon dioxide.

The gelatin silver iodobromide emulsion can be prepared by Heat a mixture of 80 g gelatin in 880 g water at one temperature of 400 G, whereby the gelatin dissolves. The pH of the resulting solution can be 10 + 0.1 are set, with 8.8 g of phthalic anhydride in 61.6 ml of acetone Solution can be added over 30 minutes.

After the addition of phthalic anhydride, the reaction mixture can held at the specified temperature and pH for about 30 minutes and then adjusted to a final pH of about 6.0.

To a solution of 226 g of the gelatin-phthalic anhydride derivative, produced according to the above information and containing 161 g of potassium bromide, 2g of potassium iodide and 1,200 g of water, a solution is added which contains 200 g of silver nitrate in 1,600 g Contains water. The addition is made at a rate of about 140 ml per Minute over the course of about 30 minutes The whole is held for 10 minutes and the addition continues for about 9 minutes. The resulting emulsion then knows precipitated by lowering the pH to about 2.5-3.0 with sulfuric acid. The precipitate can then be separated from the liquid above and with water washed until cold from any potassium bromide is.

95 g of gelatin can then be added to the precipitate, the Volume adjusted with water sui 845 ml and by heating to about 380 C in the course of about 20 minutes at a pH of 5.6, with about 1.0 ml of 1N potassium bromide be added to the emulsion. This reaction mixture can at 56 ° 0 with about 5 ml of a solution are added, the 0.1 g of ammonium thiocyanate in 9.9 ml of water and 0.4 ml of a solution containing 0.097 g of gold chloride in 9.9 ml of water, and the mixture is then allowed to mature at that temperature for about 37 hours. The resulting emulsion can then be sensitized panohromatically by adding in The following sequence is added: 0.1% by weight of methanolic solutions of anhydro-5,5'-diphenyl-3,3'-bis (4-sulfobutyl) -9-ethyl-oxacarbocyanine hydroxide and anhydro-5 'dimuthyl-3,3'-bis (3-sulfopropyl) -9-ethyl-thiocarbocyanine hydroxide in the concentrations that may be effective. To the resulting panchromatic Sensitized silver iodobromide emulsion can then be used before pouring on the cadmium sulfide be given as a silver precipitating agent that is present in.

situ by adding approximately equimolar amounts of cadmium nitrate and sodium sulphide solutions as well as the porosity-causing silicon dioxide and the antiques agent.

The film unit so produced can be exposed by electromagnetic rays are incident on the transparent base; she can be developed by leaving the film unit with a developer for about 2 seconds is brought into contact, which contains 180 ml of water, 8.33 g of sodium hydroxide, 16 g of sodium thiosulphate, 6.48 g sodium sulfite, 0.42 g 6th nitrobenzimidazole and 5 g 2,6-dimethylhydroquinone contains. In this way a positive silver image with the ones described above emerges optical properties and accuracy, you for additive color reproductions is required.

A film made according to the above showed a Dmax silver coverage of 160 mg / 0.09 m² (160 mg / ft²) and a Dmin silver coverage of 166 mg / 0.09 m² (166 mg / ft²) and an optical density of 2.90 and 0.65, respectively. The opacity of the film was at Dmax = 179 and at Dmin = 37.5 it could be calculated as O.P. = ######## ###### For comparison, according to the above Angshen, one film unit is used in the same Manufactured in a manner that is different from the fact that the silver-precipitating nuclei are in a separate layer, permeable to the developer, on the surface of the light-sensitive silver halide emulsions weren avoided, which are opposite the one who wears the color grid. Microphotographs 3, 5 and 6 show clearly the extraordinarily effective use of the image, which is according to the invention can achieve. Specifically, a film unit made in accordance with the present invention has and has been developed @@@@ initial silver coverage of 128 mg / 0.092 m² (128 mg / ft²) before exposure and development, but after exposure and Develop a Dmax in image areas of 118 mg / 0.09 m² (118 mg / ft²) of positive and negative image silver with a silver utilization in the region of 92%. In clear In contrast, a comparative film has the silver-precipitating nuclei in a separate layer immediately adjacent to the light sensitive silver halide emulsion layer contains a critical silver coverage of 133 mg / 0.09 m² (133 mg / ft²) exposure and development, but after exposure and development in areas of a positive image has a maximum image density of 61 mg / 0.09 m² (61 mg / ft²) positive picture silbox, and with a negative picture over it a silver cover of 40 mg / 0.09 m² (40 mg / ft²) with an overall silver utilization of 76%.

Other film units can be manufactured according to the above instructions can be developed, with a Dmax of 3.3 and a Dmin of 0.3 is obtained, so that there are differences in density units of 3.0 in a percent transmission ratio of about 1,000: 1. If desired, For example, with the help of selective color raster parameters, a Dmax of 4.0 and a Dmin of 0.3 can be achieved, whereby differences in density are taken into account of 3.7, which corresponds to a percent permeability ratio of about 5,000 : 1 corresponds.

In contrast to developed negative silver images in usual Processes including the silver diffusion reverse transfer processes described above, with which one obtains images corresponding to the microphotographs of Figures 3, 5 and 6, Clearly, the films of the invention show essentially no fiber or filament formation in the negative image and essentially no enhancement of the negative image contained therein would have their cause.

The film units of the invention are particularly useful as Kinoflim for additive color film image projection as well as for dispositive see-through film, because they are inevitably easy and effective with simple and stable developers Let develop immediately after exposure without any special procedures and devices would be necessary to separate an emulsion layer from the rest from the film unit so as to give a color record only in which the image unit and reproduction properties are guaranteed.

As the example shows, in the light-sensitive silver halide emulsion be advantageously incorporated a particulate Materiel that the emulsion a gives increased porosity without thereby causing an unfavorable. Effect on dimensional stability of the binder lattice in the emulsion is caused. In particular, it acts those materials that are also used as antiquing agents for the polymeric binder of the emulsion act and consequently contribute to the image carried by the polymer is microscopically shifted, especially in the With regard to the assigned paint residue. The silica particles can, for example at a concentration of about 0.3 to 1.5 parts silica per part polymer dispersed to facilitate penetration of the developer into the emulsion. In addition, the emulsion layer can be permeable to the developer with a polymeric material such as hardened gelatin or the like must be superfluous to the uniform penetration of the developer into the emulsion by modulating any a wavefront to promote that from the initial surface contact with the liquid used could be caused and thereby evenly Although the physical properties of the polymeric binder are preserved in the example Chromalsun and in particular algin as hardening agent for the polymer Gelatin emulsion binders and as hardening agents for the polymeric gelatin coating has been used, it goes without saying that essentially every hardening and crosslinking agents can be applied which are not harmful to photographic Effects unfolded, in particular the polymer lattice does not interfere with the migration substantially inhibits the silver image.

Numerous hardeners are known that can be used to effect the hardening or crosslinking of photographic polymeric binder material cause can. Because of their harmful photographic effects, they are used in practice of the present invention are preferred. The exclusive requirement for use the recording material is that of the polymeric lattice de emulsion suitable for the formation of the optical image parameters. Practically every common one can do this Hardening and crosslinking agent known from the relevant technical literature is to be used. The respective concentration depends on the relative activity of the means or means in question, as well as the scope of the required Hardening or crosslinking.

The respective concentration of a specific hardening or crosslinking agent, which must be brought into contact with the polymeric binder concerned ', can easily be determined empirically. Furthermore, all for the different developers permeable synthetic or natural polymeric materials that have the required have physical properties and lead to the above-mentioned results, used in place of polymeric materials such as gelatin; provided, that they form a matrix that does not have a harmful effect on the light-sensitive Silver halide crystals exert and have a lattice showing the development in the manner described above.

Appropriate silver halide solvents for use in the present invention Invention are common fixatives, such as " the sodium thiosulphate mentioned above, Sodium thiocyanate, ammonium thiocyanate, and the other substances contained in the U.S. Patent 2,543,181 and combinations of cyclic Imides and nitrogenous bases, such as barbiturates odor uracile and ammonia or Amines see further compilations as described in US Pat. No. 2,857,274 are described.

If desired, one or more conventional silver toning agents can be used be ordered in the emulsion in a concentration with which a positive one is effective Image is toned according to the respective requirements.

In the preferred embodiment of the present invention contains the developer is an alkaline material, e.g.

Sodium hydroxide, potassium hydroxide or sodium carbonate or the like. In particular at a concentration that gives the developer a pH greater than 12. Of the The developer can, if desired, be the silver halide developing agent (s) alone or there may be an additional silver halide developing agent in the Film can be arranged in a central way. However, the arrangement is one or more developing agents in the emulsion and / or a directly associated permeable layer between a particularly preferred embodiment because of the emulsion and a color residue the accuracy of the unexposed image. This arrangement facilitates that directly initiated development of areas exposed by rays the emulsion without adding such substances with the help of the developer concerned would have to diffuse to other places.

It goes without saying that the relative amount of substances which form the developer, nor can the respective conditions be changed. Thus, it is within the scope of the invention to incorporate the developers described here of preservatives, alkalis, silver halide solvents and the like. To modify. If desired, components such as retarders and accelerators can also be used in the developer and the like. The concentration of these additives can be about one vary over a wide range.

The developing solvent will generally be and possess water a solvent capacity that the polymer lattice of the emulsion in question does not detrimentally hydrated beyond the value that is detrimental for the preferred Image formation is required. As a result, no remedy should be in this crowd be incorporated, which adversely affects the lattice parameters for the Education are required.

however, in the description above, color series of filter elements was used so described that they are proportionate to the corresponding part of the total area to the total number of colors used, i.e., d313 in a three-color system each color occupies 1/3 of the total area. This can Pan to a fairly large extent before the viewer perceives a visible effect and can actually be compensated for by changing the intensity of the colors. So if in practice one dye has a greater intensity than the others, so this can be compensated by taking the total relative area of the more intense dye. The relative areas point of view is well known, so when relative areas are for the purposes of the present Invention, the variables commonly used for this purpose can be used successfully can be applied.

Different colors as well as different numbers of colors can be used can be used for the invention, but, as noted, is the preferred System a three-tier arrangement with the three primary colors red, green and blue.

Of course, in accordance with the goalkeeper Invention numerous chromatic filter element series can be provided, the Number of series depending on the optical parameters of the resulting Color grid depends.

For example, according to the teaching of the present invention also use a four-color system such as red, green, purple-blue, and orange-yellow effectively.

For the purposes of the present invention, additive trichromatic Color grids with 550, 756 and l.lCO lines / color / 2.54 cm (inches) used. It has it has been shown that the image resolution which can be obtained according to the invention exceeds that available in procedures involving the transfer of the components forming the image to or from the one that carries the ultimately created image Layer is immediately next to the color grid. Such an improved resolution Of course, facilitates the satisfaction of color reproduction according to the invention can be obtained.

In general, the silver halide emulsion preferably contains minimum grain size distribution necessary for the respective film sensitivity is to get a maximum of the average number of grains, the one behind each individual optical filter element; are arranged and to continue to maximize the resolution that is achieved with the present film. The emulsion is also preferably panchromatically sensitized to be equal Image production to achieve what is directly related to what is spoken by the person speaking Part of the radiation spectrum incident exposure radiation stands, and to continue Increase the accuracy of the image information recorded by the emulsion will.

In addition to the essential layers described, the film unit even contain one or more sub-layers or other layers that in turn again one or more additives such as plasticizers, essential intermediate layers may contain, for example, to increase the adhesion of the layers, wherein one or more of the described layers composed of two or more layers can be that lie directly next to each other or from each other by another Layer can be separated.

Claims

Claims (21)

P a t e n t a n s p r ü c h e Photosensitive, photographic Recording material containing a multicolored residue and a light-sensitive silver halide emulsion contains, thereby g e k e n n -z e i c h n e t; that is located on a surface of the multicolored raters a photosensitive silver halide emulsion with photosensitive Silver halide crystals that contain at least two halides, namely iodides, Contain bromides, chlorides and nuclei precipitating out from silver. 2. Recording material according to claim 1, characterized in that it is -k o n nz e i'c h e t that the silver precipitating nuclei are present in a concentration, that a silver image is created, the optical density of which is inversely proportional to the exposure the emulsion is. 3. Recording material according to claim 1 or 2, characterized in that g e k e n n e i n e t that the silver precipitating nuclei are present in a concentration are that a silver image is formed, which is made up of unexposed silver halide crystals derives, and has a greater opacity than a silver image that is exposed Silver halide crystals. 4. Recording material according to claim 1 to 3, characterized in that g e e -k e I would like to point out that the silver image, which is made up of unexposed silver halide crystals derives, silver has a first physical character and the silver image, which is derived from exposed silver halide crystals, silver from a second physical character, and the first mentioned silver per unit of measure has a higher optical density than the second mentioned silver. 5. Recording material according to claim 1 to 4, g é k e n n -z e i c h n e t through a transparent carrier, on one surface of which in a multicolored screen and a light-sensitive silver halide emulsion in the following order is located, wherein in a for the developer permeable polymeric binder light-sensitive silver halide crystals are dispersed. 6. Recording material according to claims 1 to 5, characterized in that they are n z e i n e t; that the maximum image density of the silver image that differs from the Developing exposed silver halide crystals by at least 1.5 density units is less than the maximum density of a silver image that evolves from development derived from unexposed silver halide crystals. 7. recording material according to claim 1 to 6, characterized g e k e n It does not indicate that the minimum image density not greater than about 0.5 and the maximum image density is not less than about 2.0. 8. Recording material as claimed in claims 1 to 7, characterized in that it is g e k e n Note that the silver halide crystals are silver iodobromide crystals. 9. Recording material according to claim 8, characterized in that g e -k e n n z It is noted that the silver iodobromide crystals contain about 1 to 9% by weight iodine. 10. Recording material according to claims 1 to 9, characterized in that they are It is clear that the light-sensitive silver halide crystals are panchromatic are sensitized. 11. Recording material according to claims 1 to 10, characterized in that they are It does not point out that it is an additive three-color residue as mahrferbiges resting contains. 12. Recording material according to claim 11, characterized in that g e -k e n n z e i c h n e t that the additive three-color residue red, green and blue optical Contains filter elements. 13. Recording material according to claim 5 to 12, characterized in that g e k e It is noted that the polymeric binder which is permeable to the developer Contains gelatin. 14. Recording material according to claim 13, characterized in that g e -k e n n z e i n e t that the gelatin. is hardened to the point that it is microscopic Prevents diffusion of the silver image components. 15. Recording material according to claims 1 to 14, characterized in that it is g e k e It is noted that silicon dioxide is dispersed in the hardened gelatin binder is. 16. Recording material according to claim 15, characterized in that g e -k e n n z e ì c h n e t that the silicon dioxide in a concentration of about 0.3 to 1.5 Parts of silicon dioxide per part of gelatin is present. 17t recording material according to claims 1 to 16, since, by g e k It is noted that there is a separate polymer which is permeable to the developer Layer has a silver halide developer and the polymeric layer placed between the color screen and the photosensitive silver halide emulsion is. 18. Recording material according to claim 1 to 17, characterized in that g e k e n n æ i c h n e t that the multicolored grid is a multicolored additive rester is. 19. Recording material according to claim X to 18, characterized g e k e n n z e i n e t that the silver precipitating Cores in the silver halide emulsion are dispersed at a concentration of about 1 to 25 x 10-6 mol / 0.09 m². 20. Recording material according to claim 1 to 19, characterized in that g e k e It is noted that the silver-precipitating nuclei are metal sulphides, metal selenides or colloidal precious metals. 21. Recording material according to claims 1 to 20, characterized in that they are g e k e nn z e i c h'n e t that the maximum image silver density is no more than about 0.3 and the maximum image silver density of developed silver that differs from unexposed Silver halide crystals do not derive, larger than about 2.4. L e r s e i t e