Abstract: A planographic printing plate comprises an anodized metal substrate, an interlayer on the substrate and a photosensitive layer on the interlayer in which the interlayer is a hydroxy-substituted organic acid.

Abstract: An optical information recording medium comprising a substrate and a recording layer superimposed on said substrate, said recording layer being comprised of a reflective layer which contains metal particles having a particle diameter of 1500 .ANG. or less and in which said metal particles have been distributed closely and a light absorptive layer containing a coloring matter.

Abstract: An electrophotographic image-forming member comprises (1) a substrate for electrophotography which has a surface coating of an aluminum oxide containing water chemi-structurally and (2) a photoconductive layer which is laid on said surface coating of the substrate and constituted of an amorphous material containing at least one of hydrogen atom and halogen atom in a matrix of silicon atom, said photoconductive layer containing at least one of oyxgen atom, nitrogen atom, and carbon atom.

Abstract: The plate-, foil- or strip-shape support materials for offset printing plates are based on chemically, mechanically and/or electromechanically roughened aluminum, or on one of its alloys. Optionally, the aluminum may also have an aluminum oxide layer produced by anodic oxidation. One of the two surfaces the support material has a hydrophilic coating of at least one salt-type hydrophilic organic polymer which is a complex-type product obtained by reacting (a) a water-soluble organic polymer having acid functional groups containing phosphorus or sulfur (for example, polyvinylphosphonic or polyvinylsulfonic acid) with (b) a salt of an at least divalent metal cation.In a process for manufacturing this support material, the complex-type reaction product, dissolved in an aqueous acid, is applied to at least one surface of the support material and the support material thus modified is dried.

Abstract: The plate-, foil- or strip-shape support materials for offset printing plates are based on chemically, mechanically and/or electromechanically roughened aluminum, or on one of its alloys. Optionally, the aluminum may also have an aluminum oxide layer produced by anodic oxidation. One of the two surfaces of the support material has a hydrophilic coating of at least one salt-type hydrophilic organic polymer which is a complex-type product obtained by reacting (a) a water-soluble organic polymer having carboxylate substituents, carboxylic acid amide substituents and/or carboxylic acid imide substituents as functional groups, with (b) a salt of an at least divalent metal cation, and wherein the quantity of complex-type reaction product is less than about 0.1 mg per dm.sup.2 of support material surface.

Abstract: A photographic sensitive material is described comprising at least one photographic sensitive layer provided on a plastic film base through a subbing layer, wherein the improvement comprises said subbing layer containing fine particles of at least one electrically conductive crystalline metal oxide selected from ZnO, TiO.sub.2, SnO.sub.2, Al.sub.2 O.sub.3, In.sub.2 O.sub.3, SiO.sub.2, MgO, BaO, and MoO.sub.3, or a compound oxide thereof having a volume resistivity of 10.sup.7 .OMEGA. cm or less.

Abstract: The present invention relates to novel electrophotographic imaging systems and particularly to novel electrophotographic photoreceptors. These photoreceptors comprise a conductive substrate, an inorganic barrier-charge transport layer, and a photoconductive insulative layer. The barrier charge transport layer comprises aluminum oxide having a non-porous zone adjacent the substrate, and a porous charge transport zone.

Abstract: A developing solution for use with imaging film comprising a photoresist layer over an aluminum coated substrate and the process of developing the film are shown to be rapid acting. The developing solution comprises an aqueous solution having a pH of at least 12.5 of an alkali metal hydroxide and a chelating agent having a stability constant for Al.sup.+3 of at least 6.70.

Abstract: A metal image-forming material comprising a base, a photosensitive resin layer formed thereon, and a layer of an aluminum/iron alloy formed between the base and the resin layer. The aluminum/iron alloy layer has superior etchability, and the image-forming material affords images having high contrast and resolving power. The image-forming material is especially suitable for linework and dot etching.

Abstract: A recording material comprising a support having thereon a layer containing (i) at least one metal and (ii) a layer containing one or more metal sulfides other than GeS, metal fluorides or metal oxides. A mono-layer mixture of (i) and (ii) may also be used.

Abstract: An improved presensitized printing plate comprises at least one metal working surface, a cobalt layer electroplated on the outer working surface of said at least one metal working surface, and a coating of light sensitive material directly deposited on said cobalt layer.A method is also described which makes use of metallic cobalt for the preparation of presensitized printing plates in order to provide layers that are in themselves adherent to light sensitive materials without the need of using adhesives, and are useful for directly depositing light sensitive coatings thereon.

Abstract: Aluminum substrate suitable for making lithographic plates which has been treated to render the surface hydrophilic and negatively charged and thereafter ionically colored with a cationic dye.

Abstract: A novel imaging material comprising a substrate; a lead layer thereon including at least 20% by weight of lead and having a substantially dome shaped grain structure; and a stabilizing layer formed on said lead layer and comprising a specific metallic element or an organic polymer. The imaging material has a gradation, an excellent resolution and an improved storage stability. The imaging material can form an image thereon by a dry process even in a light room without the conventional development step.

Abstract: A photographic material comprising a light sensitive photographic layer and a support having thereon in order a layer containing alumina sol including colloidal particles and an electrolyte and a layer containing a hydrophobic polymer.

Abstract: A light-sensitive copying material comprising at least two organic coating layers on a support, at least one of the coating layers being a light-sensitive layer which comprises an O-quinone diazide compound whose alkali solubility is increased by irradiation with active rays.

Abstract: There is disclosed a dry system image producing element comprising a substrate, a thin metal layer and a photosensitive layer. After exposing the element to light through a desired pattern, the photosensitive layer is peeled off to obtain a light barrier pattern made from the metal on the substrate corresponding to the photosensitized portion.

Abstract: A radiation sensitive composition comprises a quaternary ammonium salt and a chemical sensitizer of the formula ##STR1## wherein R.sup.21 is aryl, arylalkenyl or arylalkyl, R.sup.22 is aryl, alkyl, arylalkenyl, arylalkyl, carboxylic acid or salt, or hydrogen and X is carboxylic acid or salt. The quaternary ammonium salt is of the type which will accept at least one electron on exposure to radiation to form a substance capable of causing metal to be deposited onto said substance from an electroless plating solution in contact with said substance and comprising a salt of said metal and a reducing agent. A radiation sensitive plate comprises a metallic substrate coated with a radiation sensitive layer comprising a quaternary ammonium salt. The layer may be formed of the above composition.

Abstract: A method for the production of aluminum substrates useful in the production of lithographic printing plates which comprises graining the surface of an aluminum sheet in a saturated solution of an aluminum salt of a mineral acid to which up to 10% of a mineral acid has been added, with optional electrolysis.

Abstract: A planographic printing plate material comprising a support and a light sensitive layer provided on the support, the light-sensitive layer being composed of (A) an inorganic material; (B) at least one metal and/or metal compound [(A)/(B) are capable of reacting with each other upon application of electromagnetic radiation] and (C) an organic compound capable of affecting the reaction between the inorganic material (A) and the metal and/or metal compound (B), wherein the inorganic material (A), the metal or metal compound (B), and the organic compound (C) are in contact with each other. When the light-sensitive layer is exposed to electromagnetic radiation, a difference in the hydrophilic or oleophilic nature of the exposed areas and the unexposed areas results, whereby a planographic printing plate is obtained which can be mounted on a printing machine and printed without any other treatments.