Abstract: Optical recording element comprising a transparent supporting plate which on one side has successively a recording layer of preferably a ferrite, an optional transparent intermediate layer and a reflecting optical structure of reflection areas which are situated alternately at a high level and at a lower level and which can be read optically.

Abstract: Multicolor photographic elements are disclosed each containing superimposed emulsion layers for separately recording blue and minus blue light including at least one emulsion layer comprised of a dispersing medium and silver halide grains, wherein at least 50 percent of the total projected area of the silver halide grains is provided by thin tabular silver iodide grains having a thickness of less than 0.3 micron and an average aspect ratio of greater than 8:1. The multicolor photographic elements show advantages in the minus blue recording emulsion layers directly attributable to the thin tabular silver iodide grains.

Abstract: Process for the preparation of a photographic material comprising in at least one layer photographic useful compounds, e.g. color couplers or developers, which are occluded into solid polymer particles of 0.1 to 0.5 .mu.m in size.

Abstract: A photoconductive member comprises a support for a photoconductive member and an amorphous layer having a layer constitution comprising a first layer region comprising an amorphous material containing silicon atoms and germanium atoms and a second layer region comprising an amorphous material containing silicon atoms and exhibiting photoconductivity, said first and second layer regions being provided successively from the side of said support.

Abstract: Network preforms for battery grids are prepared from cross-lapped assemblages of spaced bundles of inorganic filaments which are bonded at crossover points.

Abstract: In a method for preparing a mosaic luminescent screen, islands of dry precoating material are adhered to a glass support surface at the sites of the mosaic parts of the screen. Then, the mosaic parts of the screen are deposited on the islands by the slurry-direct photographic method, including development with a turbulent aqueous developing medium. The use of islands provides the necessary adherence during development of the mosaic parts with a substantial reduction in the amount of precoating that must later be removed.

Abstract: The present invention relates to solid magnesium peroxycarboxylate salts and detergent compositions containing them. These compounds have markedly improved stability characteristics relative to the corresponding peroxycarboxylic acids, especially when admixed with alkaline granular detergent products. The activity of the magnesium peroxycarboxylate salts after dissolution is the same as that of the corresponding peroxycarboxylic acids, especially when used as laundry bleaches. The compound within this invention also have improved odor and dissolution characteristics relative to the corresponding peroxycarboxylic acids.

Abstract: A silver halide photographic light-sensitive material containing at least one compound represented by the general formula (I): ##STR1## is disclosed. The compound of the invention has good stability over time. The material has improved developability and makes it possible to carry out simple and rapid processing. The material has good resistance with respect to fogging, stains and desensitization.

Abstract: A two-component type dry developer consisting of a mixture of a toner and a magnetic carrier. The toner contains a resin as its main component. The magnetic carrier has a specific surface area of 100 to 300 cm.sup.2 /g and a shape factor of not less than 5.5.times.10.sup.-2 and less than 8.0.times.10.sup.-2. The product of flowability and true specific gravity of the magnetic carrier is 100 to 190 sec/50 g.

Abstract: Photographic color developer compositions containing a primary aromatic amino color developing agent and an hydroxylamine are stabilized by incorporating therein certain polyamino stabilizing agents, such as N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid. Decomposition of the hydroxylamine, in the presence of heavy metals such as iron which act to catalyze the decomposition, and resultant formation of ammonia is effectively prevented by the presence in the developer composition of such stabilizing agents. Undesirable precipitate formation is also effectively avoided.

Abstract: There is disclosed a light-sensitive silver halide photographic material having at least one silver halide emulsion layer constituted of a plural number of layers which are substantially the same in color to which they are sensitive but different in sensitivity provided on a support, which comprises a layer having the highest sensitivity among the plural number of layers with different sensitivities which contains at least two kinds of substantially mono-dispersed silver halide grains with different average grain sizes.The light-sensitive silver halide photographic material according to this invention is high in sensitivity and excellent in graininess of dye image.

Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a support having thereon at least one light-sensitive silver halide emulsion layer and a light-insensitive uppermost layer. The light-insensitive uppermost layer has a melting time longer than that of the light-sensitive silver halide emulsion layer and a thickness of the light-insensitive uppermost layer is from 0.3 .mu.m to 0.8 .mu.m. The silver halide photographic light-sensitive material causes a remarkably lower degree of reticulation, can reduce the amount of scum formed in the processing solution, and has an improved covering power.

Abstract: Disclosed is a photosensitive material for electrophotography, which comprises a photosensitive layer containing a disazo pigment represented by the following formula: ##STR1## wherein R.sub.1 stands for a lower alkyl group or a lower alkoxy group, n is a number of zero, 1 or 2, R.sub.2 stands for a lower alkyl group, a lower alkoxy group, a di-lower-alkylamino group, a nitro group or a halogen atom, m is a number of zero, 1 or 2, Z stands for a benzene ring or a naphthalene ring, and Y stands for a group represented by the following formula: ##STR2## in which B stands for a benzene, naphthalene, indole, carbazole or benzofuran ring or a substitution product thereof, which is fused to the benzene ring, Ar.sub.1 and Ar.sub.2 stand for a benzene ring, a naphthalene ring, a dibenzofuran ring or a substitution product thereof, R.sub.3 stands for a lower alkyl group, a carboxyl group or a carboxyl ester group, and R.sub.

Abstract: Silver halide grains with high sensitivity are provided with iodobromide grains having at least 12% nominal iodide molar content, the grains including at least three different iodobromide phases having different iodide contents, the most external phase having an iodide content lower than the nominal iodide content.

Abstract: Silver halide emulsions having tabular grains with a mean aspect ratio of at least 10 are prepared by inducing twinning on the (111) crystal plane in silver bromide grains and then growing the grains in a silver halide solvent solution for a time sufficient to provide said tabular grains.

Abstract: A method for performing high resolution lithography. The first step involves disposing on a substructure having a surface layer to be patterned a layer of a resist material characterized by both substantial degradation sensitivity for incident ionizing radiation of a predetermined type and substantial instability of undegraded regions for a predetermined plasma etchant which attacks the surface layer. The next step is to expose a prearranged pattern of regions of the resist layer to the predetermined type of radiation to produce a corresponding pattern of degraded resist regions. Then the pattern of degraded resist regions is removed using a preselected developing solution. The next step is to modify the resist material to increase the stability thereof for the plasma etchant by exposing the developed resist layer to ionizing radiation of a type which has been predetermined to degrade the resist material and then baking the degraded resist layer.

Abstract: Photothermographic emulsions display enhanced spectral sensitization when the silver halide grains are formed in the presence of one or more spectral sensitizing dyes.

Abstract: A silver halide photographic light-sensitive material is described, which comprises a support, and at least one light-sensitive silver halide emulsion layer and an uppermost layer provided on at least one surface of the support, wherein the melting time of the uppermost layer is made greater than that of the light-sensitive silver halide emulsion layer. The material has good strength and produces a reduced amount of scum which normally occurs in the processing liquid during development processing.

Abstract: A method for processing a silver halide photographic material having at least one silver halide emulsion layer on at least one side of a support is disclosed. The method is characterized by pretreatment with a solution carried out prior to a development-processing. The solution being substantially unable to cause a development reaction though it contains a developing agent. The method improves the covering power of developed silver without deteriorating the physical properties of the silver halide photographic material.

Abstract: A silver halide photographic light-sensitive material containing a diffusion resistant coupler, a light-sensitive silver halide and at least one compound represented by the following general formula (I) in the same layer or different layers on a support. ##STR1## Wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms, or R.sub.1 and R.sub.2 may be bonded to each other to form a heterocyclic ring together with the nitrogen atom; R.sub.3, R.sub.4, R.sub.5 and R.sub.6, which may be the same or different, each represents a hydrogen atom, a halogen atom, a hydroxy group, an amino group, an alkoxy group, an acylamido group, a sulfonamido group, an alkylsulfonamido group or an alkyl group, or R.sub.1 and R.sub.6 or R.sub.2 and R.sub.3 may be bonded to each other to form a 5-membered or 6-membered ring; X represents HPF.sub.6 or HBF.sub.4 ; and n represents an integer from 1 to 3.