Abstract: An automated in situ heat induced antigen recovery and staining method and apparatus for treating a plurality of microscope slides. The process of heat induced antigen recovery and the process of staining the biological sample on the microscope slide are conducted in the same apparatus, wherein the microscope slides do not need to by physically removed from one apparatus to another. Each treatment step occurs within the same reaction compartment. The reaction conditions of each reaction compartment for treating a slide can preferably be controlled independently, including the individualized application of reagents to each slide and the individualized treatment of each slide. The reagents are preferably held in a reagent dispensing strip similar to a “blister pack”.

Abstract: A silver halide photographic material for direct observation comprising a support having on one side of the support, (a) a photosensitive layer comprising a silver halide emulsion; and (b) a non-photosensitive layer, wherein the photographic material comprises at least one oil-soluble dye having a maximum absorption wavelength of a spectral reflection density curve in a range of 540 to 580 nm and exhibiting an absorption density at 440 nm of not more than ¼ of an absorption density at the maximum absorption wavelength.

Abstract: A silver halide color photographic light-sensitive material that has, on a transmissive support, at least one yellow color-forming light-sensitive silver halide emulsion layer, at least one cyan color-forming light-sensitive silver halide emulsion layer, and at least one magenta color-forming light-sensitive silver halide emulsion layer, and at least one non-light-sensitive hydrophilic colloid layer, and that contains a water-soluble dye that gives a maximum absorption in the range of 570 to 610 nm and a half width at half maximum on the longer wavelength side of 40 nm or less in a hydrophilic colloid layer, and a water-soluble dye that gives a maximum absorption at 740 nm or more and a half width at half maximum on the shorter wavelength side of 100 nm or less in a hydrophilic colloid layer.

Abstract: This invention provides a display element comprising a support, a phosphorescent material, and at least one layer containing a silver halide emulsion, wherein the phosphorescent material is not excited upon exposure of the silver halide emulsion. It further provides methods of exposing and processing such display elements.

Abstract: A (photo)thermographic recording material comprising a substantially colourless support and a (photo-addressable) thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent for the substantially light-insensitive organic silver salt in thermal working relationship therewith (, photosensitive silver halide is catalytic association with the substantially light-insensitive organic silver salt) and a binder, characterized in that a blue pigment or dye having a maximum absorption wavelength of from 550 to 700 nm is present in the thermosensitive element and/or any other layer on either side of the support which provides a background for viewing in transmission images produced with the (photo) thermographic recording material; and a (photo)thermographic recording process therefor.

Abstract: This invention comprises dispersion comprising a solvent having dispersed therein a liquid-crystal forming dye of structural Formula I:

Abstract: An iris diaphragm, in particular for an exposure lens in semiconductor lithography, is provided with a diaphragm base (2) and a grooved ring (1) which can be rotated relative to one another, having a multiplicity of leaves (4) which in each case are mounted in the diaphragm base (2) and in the grooved ring (1) and are guided by curved tracks (6), arranged in the grooved ring (1), for the purpose of adjusting the diaphragm aperture. A drive device (11) serves the purpose of twisting the diaphragm base (2) and grooved ring (1) relative to one another. The curved tracks are designed as circumferential tracks (6) in the grooved ring (1). The circumferential track (6) is split up into alternating useful-region curves (6a) and return curves (6b). The diaphragm base (2) or the grooved ring (1) can be rotated in a preselected rotary drive direction by a drive device (11), the leaves (4) being guided in a circulating fashion in the circumferential track (6).

Abstract: A black and white monosheet thermographic recording material having a spectrophotometrically determined maximum absorption for visible light between 570 and 650 nm and comprising a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the substantially light-insensitive black and white monosheet thermographic recording material contains at least two colorants with maximum absorption at a wavelength between 450 nm and 700 nm, none of the at least two colorants is an antihalation dye, and at least one of the at least two colorants is incorporated in the support; and photothermographic and thermographic recording processes therewith.

Abstract: This invention comprises dispersion comprising a solvent having dispersed therein a liquid-crystal forming dye of structural Formula I: [D-(X)m]-(Y)n wherein: D is a light-absorbing chromophore other than a cyanine dye or a barbituric acid oxonol dye; each Y contains an ionic or a nonionic solubilizing substituent or a group with a pKa value of less than 4 in water; each X is a nonionic substituent; n is 0 to 10; m is 0-10; and the resulting dye forms a liquid-crystalline phase in solvent. The dispersion is particularly useful in imaging and photographic elements.

Abstract: A photothermographic element comprises: (a) a support bearing on one surface thereof (b) a photosensitive emulsion layer (i) a binder; (ii) a light-insensitive organic silver salt, (iii) a reducing agent, and (iv) a photosensitive silver halide emulsion; (c) an antihalation dye incorporated in the emulsion layer, in a polymer layer under the photosensitive layer, in the support, or in a backside polymer layer; and (d) one or more tinting dyes such that the final color space of the film lies within the range defined by 220°<hab<260°, where hab is the psychometric hue angle, hab=arctan(b*/a*), as defined in the CIELAB color system.

Abstract: A colour photographic recording material, comprising of a transparent film base, red-sensitive, green-sensitive and blue-sensitive silver halide emulsion layer units which are disposed thereon and which contain colour couplers, and optionally of further light-insensitive layers, wherein the green-sensitive silver halide emulsion layer unit comprises at least two green-sensitive partial layers, the partial layer of which which is furthest from the film base has the highest sensitivity and is situated further from the film base than is each partial layer of the red-sensitive silver halide emulsion layer unit, and wherein each partial layer of the blue-sensitive silver halide emulsion layer unit is situated further from the film base than is the highest-sensitivity partial layer of the green-sensitive silver halide emulsion layer unit, contains, in the highest-sensitivity partial layer of the green-sensitive silver halide emulsion layer unit, an organic yellow dye which can be decolorised during processing; the

Abstract: The present invention is a silver halide photographic material including at least one layer which contains; a polymer comprising as constituent components thereof a repeating unit having a photographically useful group and at least one repeating unit having an imidazole group; and a compound having at least one functional group which reacts with an imidazole group and at least one other functional group capable of reacting with an imidazole group and a primary amine group, the amount of the compound being sufficient to insure adequate fixation of said polymer.

Abstract: Solid particle dispersions of compounds useful in imaging elements can be made with substantially improved stability to particle growth by dispersing the compound of interest in the presence of a relatively small amount of a second compound that is structurally similar to the compound of interest. This second compound is combined with the compound of interest prior to dispersing the compound of interest, i.e., prior to milling in the case of milled dispersions, and prior to precipitation in the case of pH or solvent precipitated dispersions. While being distinct, the second compound has a similar chemical structure to the main compound.

Abstract: An image formation method comprising imagewise exposing a silver halide light-sensitive material comprising a support having thereon a light-sensitive silver halide, a binder, a slightly water soluble basic metal compound, and a dye composition which is decolorized or discolored on heat development; contacting the surface of the light-sensitive material with a sheet coated with a binder and a compound which forms a complex with a metal ion constituting the basic metal compound and heating them in the presence of a reducing agent and water after or during the imagewise exposing; and peeling off the sheet to obtain an image on at least the light-sensitive material and the sheet, wherein the dye composition comprises an oil-soluble dye formed by a leuco dye and a color developer.

Abstract: Photographic elements are formed by (a) coating a first layer on a transparent support from a coating composition comprising an organic solvent, an alkaline aqueous insoluble, organic solvent soluble film forming binder, and a solid particle non-aqueous dispersion of a filter dye which is substantially insoluble in the organic solvent and readily soluble or decolorizable in alkaline aqueous photographic processing solutions at pH of 8 or above, and (b) coating a second layer on the opposite side of the support relative to the filter dye containing layer from an aqueous coating composition comprising a silver halide emulsion.

Abstract: The present invention provides an imaging element comprising on one side of a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei in water permeable relationship with said emulsion layer and on the other side of the support at least one backing layer comprising gelatin and a dye and/or a dye precursor characterized in that said dye or dye precursor is such that after treatment of said imaging element in an alkaline solution with a pH of 10.9 for 20 s at a temperature of 30.degree. C. the backing layer has a reflection spectrum when treated for 20 s at 20.degree. C. in a neutralizing solution with a pH of 7.5 that is visually different from the reflection spectrum when treated for 20 s at 20.degree. C. in a neutralizing solution with a pH of 8.5.

Abstract: A photographic material is disclosed comprising a support, at least one silver halide emulsion layer, and optionally one or more non-photosensitive hydrophylic layer(s), characterized in that at least one of said emulsion layer(s) and/or non-photosensitive layer(s) contains a triphenylmethane dye, absorbing around 670 nm, represented by general formula (ID): ##STR1## wherein R.sup.1 and R.sup.2 each independently represents hydrogen unsubstituted or substituted alkyl, or unsubstituted or substituted aryl, R.sup.3 represents an electron-withdrawing group, and the substance contains at least two water-solubilizing groups, and X.sup.- represents an anion, or an intramolecular anionic group.The triphenylmethane dyes can serve as filter dye, acutance dye, or anti-halation dye. The claimed photographic materials are especially suited for exposure by a laser diode emitting at 670 nm.

Abstract: The invention involves a bleachable antihalation system, particularly for use in thermally developable photographic recording materials. This antihalation system contains, besides an antihalation dye, a bleaching agent that forms sulfurous acid or sulfurous acid derivatives on treatment with heat or irradiation with actinic radiation.

Abstract: A radiation detecting element, particularly a photographic element having a radiation detecting composition, in particular a silver halide emulsion. The composition provides the element with a wavelength of peak sensitivity, .lambda.peaksens, and a decreasing sensitivity around .lambda.peaksens. An absorber dye of defined characteristics is chosen, which has the effect of decreasing the change in sensitivity which the element otherwise has without the absorber dye (that is, the absorber dye increases the wavelength range over which the sensitivity is relatively constant). The element is preferably sensitive to infra-red.

Abstract: Xanthene derivatives having cations of the formula: ##STR1## in which X is an --SO.sub.2 --N(R.sup.6)--COR.sup.7 or --SO.sub.2 --N(R.sup.6 --CO.sub.2 (CH.sub.2).sub.2 Y grouping, wherein R.sup.6 is an alkyl group containing not more than about 6 carbon atoms, R.sup.7 is an alkyl or aryl group containing not more than about 10 carbon atoms and Y is an electron-withdrawing group; Z is a hydrogen atom or an --SO.sub.2 --N(R.sup.1)--R.sup.2 --NR.sup.3 R.sup.4 R.sup.5 grouping; R.sup.1 is hydrogen or an alkyl group containing not more than about 6 carbon atoms; R.sup.2 is an alkylene group containing from 2 to about 10 carbon atoms; R.sup.3 and R.sup.4 are each independently an alkyl group containing not more than about 6 carbon atoms, and R.sup.5 is a hydrogen atom or an alkyl group containing not more than about 6 carbon atoms, are useful as light-screening dyes in photographic products and processes.

Abstract: A film containing a filter layer comprised of a combination of a green dye and a yellow dye, which prevents the blue wavelength of white safelight from exposing the film. The filter layer permits handling of the film under white safelight for longer periods of time.

Abstract: Light-sensitive silver halide photographic materials comprising a support base and one or more hydrophilic colloid layers, at least one of which is a silver halide emulsion layer, at least one of said hydrophilic colloid layers of said photographic materials containing both a) a non-ionic surface active agent having a polyoxyethylene group and b) a fluorinated organic compound, characterized by the fact that said fluorinated organic compound is the reaction product of a polyoxyalkyleneamine compound and a fluorinated organic acid compound.

Abstract: A silver halide photographic material composed of a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the material contains the combination of (i) at least one compound represented by formula (I) and (ii) and at least one compound represented by formulae (II) and/or (III): ##STR1## wherein R.sub.1 represents hydrogen, an alkyl group, an aryl group or an aralkyl group; X represents a halogen atom, a nitro group, a hydroxyl group, a cyano group, a lower alkyl group, a lower alkoxy group, --COR.sub.2, ##STR2## or --SO.sub.3 M; R.sub.2 represents hydrogen, --OM, a lower alkyl group, an aryl group, an aralkyl group, a lower alkoxy group, an aryloxy group, an aralkyloxy group or ##STR3## R.sub.3 and R.sub.4 each represents hydrogen, a lower alkyl group, an aryl group, an aralkyl group, --COR.sub.7 or --SO.sub.2 R.sub.7 ; R.sub.5 and R.sub.6 each represents hydrogen, a lower alkyl group, an aryl group or an aralkyl group; R.sub.

Abstract: In a processing method for silver halide color photosensitive material in which silver halide color photosensitive material is treated to produce a color dye image with a processing solution that has a fixing ability, and subsequently is not washed but treated with a washless stabilizing solution, the improvement comprising treating said silver halide color photosensitive material with a washless stabilizing solution that contains a triazinylstilbene optical brightening agent in the presence of an amount sufficient to stabilize the dye image and reduce staining of the photosensitive material of at least one compound represented by General Formula (I), (II), (II') or (II"): ##STR1##

Abstract: There is disclosed a silver halide photosensitive material for use under room-light wherein at least one silver halide emulsion layer contains (1) a spectrally unsensitized negative silver halide having an average grain size of 0.1 to 0.3 .mu.m and containing at least 80 mol % of silver chloride and (2) an organic desensitizer having an anodic polarographic potential and a cathodic polarographic potential which give a positive sum and this photosensitive material satisfying at least one of the following requirements:(a) said emulsion has undergone substantially no chemical ripening;a spectrally non-sensitizing dye capable of absorbing chiefly the rays in the range of from about 500 to 600 nm is contained in at least one of said photographic layers; and(c) at least one of the compounds from (i) to (v) as disclosed in the specification is contained in said emulsion layer.

Abstract: Photopolymerizable recording materials suitable for producing photoresist layers and lithographic printing plates are composed of one or more photopolymerizable olefinically unsaturated organic compounds, optionally a polymeric binder, one or more photopolymerization initiators, a color-forming system which on irradiation with actinic light causes an increase in the color intensity of the recording material, a sensitizer and optionally further additive and/or auxiliary substances, and contain as the color-forming system(a) one or more colorless or virtually colorless organic compounds which are oxidizable to colored compounds, and(b) a photooxidant for the colorless or virtually colorless organic compound(s) (a),wherein photooxidant (b) comprises an organic salt with a substituted or unsubstituted hetaromatic system, this hetaromatic system having one or more built-in groups of the general formula (I) ##STR1## where R is substituted or unsubstituted alkenyl, alkynyl, hetaryl, alkoxycarbonyl, carbamoyl, alkyls

Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one colored layer, and the layer can be decolored or lightened upon photographic processing of the photographic light-sensitive material,wherein the colored layer is formed by a process comprising the step of:color developing at least one colorless or light-colored leuco-dyestuff utilizing at least one metal salt of an organic acid.

Abstract: A method of processing a silver halide photographic material using a color developer containing at least two kinds of triazylstilbene brightening agents having maximum fluorescent wavelengths at least 4.mu. apart, said material containing a sensitizing dye and an antiirradiation dye.

Abstract: This invention relates to diffusion transfer processes and products wherein the transmission density of the pigmented processing composition layer is increased by employing an alkali earth metal salt to increase the light-absorbing ability of a carboxynaphthol phthalein optical filter agent within said processing composition layer. In another embodiment, a carboxyindole phthalein optical filter agent also is included in said processing composition layer, and a zinc or cadmium salt is employed to shift the spectral absorption of the carboxyindole phthalein into the green region of the visible spectrum. In a further embodiment, a calcium salt is employed in a viscous pigmented processing compositon comprising a light-reflecting pigment, colloidal silica and a metal chelating agent, e.g., an alkylene polyamine polyacetic acid to stabilize the spreading characteristics of the compositions.

Abstract: In one embodiment, the present invention is concerned with novel xanthene compounds of the formula ##STR1## wherein each R.sup.1 is the same and is selected from ##STR2## R.sup.2 is alkyl, R.sup.3 is an electron-withdrawing group positioned ortho, meta or para to said N atom, R.sup.4 is hydrogen, alkyl or an electron-withdrawing group positioned ortho, meta or para to said N atom; R.sup.5 is alkyl; X is hydrogen, an electron-withdrawing group or an electron-donating group; and A is an anion. In another embodiment, the present invention is concerned with photographic products and processes employing these xanthene compounds, e.g., as photographic light-screening dyes.

Abstract: A light insensitive imageable layer comprising a synthetic polymeric binder, a dye, a nitrate salt, and an acid.

Abstract: The present invention is concerned with photographic products and processes, particularly diffusion transfer products and processes employing certain colored triarylmethane compounds possessing in their triaryl structure a 4'-oxo-1'-naphthylidene (or a 4'-oxo-1'-phenylidene) moiety, a naphthyl (or phenyl moiety) and a phenyl moiety substituted in the ortho-position to the central carbon atom with a non-nucleophilic group that cannot add to the central carbon atom but in alkaline solution undergoes an irreversible cleavage reaction with base that is complete within a predetermined time at a predetermined alkaline pH to provide a nucleophilic moiety that adds to the central carbon atom to form a ring-closed compound which is colorless.

Abstract: In one embodiment, the present invention is concerned with novel triarylmethane compounds possessing in their triaryl structure a 4'-oxo-1'-naphthylidene (or a 4'-oxo-1'-phenylidene) moiety and a phenyl moiety substituted in the ortho-position to the central carbon atom with the group ##STR1## wherein R is an alkyl group or a phenyl group, unsubstituted or substituted with a solubilizing group; R' is selected from ##STR2## wherein R" is methyl, unsubstituted or substituted with one or two halo groups or substituted with a phenyl, alkoxy or phenoxy group and ##STR3## wherein Y is an electron-withdrawing group; and R and R' taken with said ##STR4## represents ##STR5## In another embodiment the present invention is concerned with a method of synthesizing the aforementioned compounds by reacting, e.g., a 2-R'-3-(4'-hydroxy-1'-phenyl/naphthyl)-3-(phenyl/naphthyl)-2,3-dihydrobenz [d]isothiazole-1,1-dioxide with an alkylation reagent in the presence of base.

Abstract: The present invention is concerned with novel compounds useful in photographic products and processes comprising triarylmethane dyes possessing in their triaryl structure a 4'-oxo-1'-naphthylidene (or a 4'-oxo-1'-phenylidene) moiety and a phenyl moiety substituted in the ortho-position to the central carbon atom with the group ##STR1## wherein R is an alkyl group or a phenyl group, unsubstituted or substituted with a solubilizing group and Y is an electron-withdrawing group.

Abstract: The present invention is concerned with novel 3,3-disubstituted-sulfam(na)phthaleins wherein one of the 3-substituents is derived from a 1-naphthol or a phenol substituted in the 2-position with a perhalomethylcarbinol group and wherein the N atom of the sulfam(na)phthalein ring is substituted with ##STR1## wherein R is alkyl or aryl or with ##STR2## wherein Y is hydrogen or an electron-withdrawing group, which compounds find utility, e.g., as pH-sensitive indicator dyes or as photographic light-screening dyes.