Abstract: A vacuum laminating fixture includes a pair of opposed plates having opposed plane faces with a peripheral groove formed in each plate surrounding the face with the grooves matched for receiving a unitary band seal extending between the grooves for sealing the space between the faces of the plates, a vacuum port is formed in the lower plate communicating with the area of the face inside the peripheral groove. The method includes setting up a laminate of plural flexible sheets of circuit, placing the laminate within and between the faces of the plates, drawing a vacuum of 28 inches of mercury for a period of two minutes to completely evacuate the space between the laminate sheets, and thereafter applying a predetermined curing pressure and temperature to the plates within a press.

Abstract: A thermally developable light-sensitive material comprising a support having thereon at least one layer containing (a) an organic silver salt; (b) a catalytic amount of a light-sensitive silver halide prepared by mixing a solution of a compound capable of releasing a halide ion and a solution of a compound capable of releasing silver ion in the presence of a surface active agent; (c) a reducing agent and (d) a binder.

Abstract: An incorporated-coupler multi-layered color photographic light-sensitive material which comprises a support having thereon at least two light-sensitive emulsion layer units which provide, upon color development, images having substantially different hues, at least one of the light-sensitive emulsion layer units comprising two or more unit layers in which at least one of which unit layers contain an ICC uncolored coupler alone or in combination with another coupler.

Abstract: A method for use in forming thin film patterns in the fabrication of integrated circuits. The method involves depositing a bottom layer of positive photoresist material on a substrate, and forming over the bottom layer, a discrete light-transparent top layer of positive photoresist material which is less solubilized in developer after exposure to light than is the material in the bottom layer. The top and bottom layers are preferably separated by an intermediate layer of a light-transparent polymeric material which is immiscible in the bottom layer and unaffected by the subsequently applied top layer.The composite structure is exposed to a selected pattern of light, e.g., through a mask, and developer for the positive photoresist material is applied to the top and bottom layers. In the case where an intermediate layer is used, the top layer is developed first.

Abstract: An electrophotographic developer containing a lake of a diphenylmethane color of the formula: ##SPC1##Wherein R.sub.1 and R.sub.3 are each hydrogen, phenyl or alkyl substituted or unsubstituted with hydroxyl, alkoxy, cyano, carbalkoxy, carbamoyl or phenyl, R.sub.2 and R.sub.4 are each alkyl substituted or unsubstituted with hydroxyl, alkoxy, cyano, carbalkoxy, carbamoyl or phenyl and R.sub.5 and R.sub.6 are each hydrogen, alkoxy or halogen.

Abstract: A blue-colored filter element of an additive color screen possessing enhanced light stability is prepared by applying to a hydrophilic colloid area an acid triphenyl methane dye and a phthalocyanine dye possessing at least two sulfonic acid groups.

Abstract: A method of making a photographic print having improved sharpness, clarity, texture and highlight definition, suitable for use in dye-transfer printing, engraving, lithography, offset, and the like, involves the production of a primary color separated negative of the image to be printed on a panchromatic film, producing a separated color positive from the separated color negative, producing a reversal positive from the separated color positive on direct reversal film so as to produce a panchromatic primary color separated reversal positive, producing a composite separation negative from the separated color positive and the reversal positive, and producing the desired photographic positive from the composite negative.

Abstract: A multilayer color photographic material with improved color reproduction comprising a support having thereon at least two photosensitive silver halide emulsion layers which provide color images having different colors from each other, the multilayer color photographic material containing at least one interlayer color correction coupler as defined hereinafter.

Abstract: A subtractive developer for negative working lithographic plates comprising an aqueous solution of an alcohol, preferably n-propanol, a small quantity of ammonium sulfite, and polyvinylpyrolidone in the range of 0.05 - 0.12% by weight. The developer may also contain a small quantity of ammonium sulfate or ammonium chloride.

Abstract: A process for diazo-type multi-color reproduction by which portions of a sensitive paper corresponding to predetermined portions of an original can be colored selectively to different hues by disposing a layer of thermotransferable coupler between an original and diazophotosensitive paper followed by exposure to light and heating of the assembly. The layer of thermotransferable coupler is not applied to the entire image area of the original and the thermotransferable coupler is faster in coupling rate with the diazonium salt under the development conditions than the basic color coupler of the photosensitive paper or developing solution.