Abstract: Disclosed is a microstructure comprising an aluminum anodized film bearing through micropores, wherein a surface of the microstructure is covered with a protective film for preventing hydration of the aluminum anodized film. The microstructure may be used as a porous alumina membrane filter excellent in filtration rate and its stability with time.

Abstract: A microstructure includes an anodized aluminum layer that has on a surface thereof micropores, at least some of which contain a catalyst, in a micropore array with a degree of ordering of at least 40%. A method of manufacturing the microstructure includes anodizing an aluminum member to form on its surface an anodized layer having micropores, removing the aluminum member, and supporting a catalyst on at least part of the anodized layer. The microstructure is excellent in heat resistance.

Abstract: A lithographic printing plate precursor comprises: an aluminum support that has been subjected to an alkali metal silicate treatment; and an image-recording layer comprising (A) an infrared absorbent, (B) a polymerization initiator and (C) a polymerizable compound, the image-recording layer being removable with at least one of a printing ink and a fountain solution, wherein the aluminum support has a surface where the amount of the Si element attached to the surface in the alkali metal silicate treatment is 1 mg/m2 to less than 10 mg/m2.

Abstract: A method of manufacturing a microstructure wherein an aluminum member having an aluminum substrate and a micropore-bearing anodized film present on a surface of the aluminum substrate is subjected at least to, in order, a pore-ordering treatment which involves performing one or more cycles of a step that includes a first film dissolution treatment for dissolving the anodized film until a barrier layer has a thickness of 3 to 50 nm, and an anodizing treatment which follows the first film dissolution treatment; and a second film dissolution treatment for dissolving the anodized film so that a ratio of a diameter of a micropore opening “a” to a micropore diameter at a height “a/2” from a micropore bottom “b” (a/b) is in a range of 0.9 to 1.1, whereby the microstructure having micropores formed on a surface thereof is obtained. The manufacturing method enables microstructures having an ordered array of pits to be obtained in a short period of time.

Abstract: A lithographic printing plate support comprising a substrate having thereon a porous layer comprising metal oxide particles bound by a compound containing a metal atom and a phosphorus atom.

Abstract: There is provided a catalyst supporting body including a porous alumina support and a catalyst supported on the porous alumina support in which the surface of the porous alumina support has at least one selected from the group consisting of irregularities having an average wavelength of 5 to 100 ?m, irregularities having an average wavelength of 0.5 to 5 ?m, and irregularities having an average wavelength of 0.01 to 0.5 ?m. The catalyst supporting body has an excellent catalytic function.

Abstract: The invention provides an image recording method and a lithographic printing method in which both high image quality and good fine line reproducibility can be achieved, and high sensitivity and safety under white light can be obtained, and the image recording method for a lithographic printing plate, which comprises imagewise exposing with an imaging time per pixel of 1 millisecond or less using a laser light with an emission wavelength of from 250 nm to 420 nm, wherein the lithographic printing plate precursor comprises a support and an image recording layer, in which the image recording layer contains (A) a polymerization initiator and (B) a polymeric compound and has an image recording layer which is photosensitive in a wavelength of from 250 nm to 420 nm, and the support has an anodized film with sealed micropores on the surface; and a lithographic printing method utilizing the same.

Abstract: Disclosed is a method for producing a structure having: a stripping step in which an aluminum member including an aluminum substrate and an anodized layer present on the aluminum substrate, which layer contains micropores having an average pore diameter of 10 to 500 nm and a coefficient of variation in pore diameter of less than 30%, is electrolyzed in an aqueous acid solution by using the aluminum member for a cathode to thereby strip the anodized layer off the aluminum substrate so as to produce a structure composed of the anodized layer with a plurality of recesses. The method can produce a structure having regularly arranged recesses in a reduced time.

Abstract: Disclosed is a method of manufacturing a lithographic printing plate support wherein an aluminum plate is subjected at least to, in order, a mechanical graining treatment in which the aluminum plate is grained to a mean surface roughness Ra of 0.25 to 0.40 ?m using a brush and a slurry containing an abrasive, an electrochemical graining treatment in which the aluminum plate is grained using an alternating current in an aqueous solution containing nitric acid, and an alkali etching treatment in which the aluminum plate is etched in an aqueous alkali solution, thereby obtaining the lithographic printing plate support having a mean surface roughness Ra after the alkali etching treatment of 0.41 to 0.6 ?m. By this method, there can be obtained a lithographic printing plate support for use in presensitized plates which, when processed into lithographic printing plates, have a long press life, an excellent scumming resistance, and an excellent cleaner resistance.

Abstract: This invention provides a support for a lithographic printing plate, and an original form of a heat-sensitive lithographic printing plate, which comprises a hydrophilic film formed on a metallic base whose surface has been roughened, said hydrophilic film having a heat conductivity of 0.05–0.5 W/(m·K) in the direction of its film thickness, which when used as the development on machine type, exhibits good on-press, or good non-treatment developability, a high sensitivity, a long press life and a preferable stain resistance and ink removal property upon printing and which, when used as a conventional thermal positive or negative type, makes efficient utilization of heat for the formation of image, has a high sensitivity and exhibits a long press life and a good stain resistance in a nonimage area, wherein the non-treatment in which the development is not performed.

Abstract: A microstructure with regularly arranged micropores is obtained by anodizing an aluminum layer having a Vickers hardness Hv of up to 20. The microstructure has a well-ordered region of large surface area and can be manufactured at low cost.

Abstract: A presensitized plate useful for making a lithographic printing plates comprises an aluminum substrate provided thereon with a photopolymerizable light-sensitive layer, wherein the light-sensitive layer comprises an ethylenically unsaturated bond-containing compound having at least three methacryloyl or acryloyl groups alone or in any combination in the molecule and the substrate is Substrate A, which has, on the surface, grained structures comprising medium waved structure whose average pore size ranges from 0.5. to 5 ?m and small waved structure whose average pore size ranges from 0.01 to 0.2 ?m, which are superimposed; or Substrate B, which has, on the surface, grained structures comprising large waved structure whose average wavelength ranges from 5 to 100 ?m, medium waved structure whose average pore size ranges from 0.5 to 5 ?m and small waved structure whose average pore size ranges from 0.01 to 0.2 ?m, which are superimposed.

Abstract: The repellency increasing structure includes a substrate, if a surface of the substrate is flat, a flat surface of which shows lyophilic property with respect to a liquid having a surface tension lower than that of water and multiple recesses multiple and/or projections that are formed in the surface of the substrate. Inner walls of the recesses and outer walls of the projections are substantially parallel to a thickness direction of the substrate. The structure further includes a repellent layer that covers the recesses and the projections. In the liquid ejection head, a solution ejection surface around multiple through-holes of a ejection substrate corresponds to the surface of the substrate of the repellency increasing structure in which the recesses and/or the projections are formed. In the stain-resistant film, the substrate of the repellency increasing structure is a support film.

Abstract: Disclosed is a support for a lithographic printing plate obtainable by performing at least graining treatment on an aluminum plate, having on its surface thereof, a grain shape with a structure in which a grained structure with medium undulation of 0.5 to 5 ?m average aperture diameter and a grained structure with small undulation of 0.01 to 0.2 ?m average aperture diameter are superimposed, and a presensitized plate provided with an image recording layer on the support for a lithographic printing plate. By using this presensitized plate, a balance between scum resistance and press life when a lithographic printing plate is produced therefrom, which has been in a trade-off relation in the past, can be maintained at a high level.

Abstract: In order to provide a structure which has a sufficiently large signal strength and generates local plasmon resonance of excellent reproducibility, the invention provides a process for manufacturing a structure at least a portion of which is an aluminum member having on a surface thereof an anodized layer having a plurality of micropores, the process comprising the steps of, in order, anodizing a surface of an aluminum member so as to form an anodized layer having micropores present therein, sealing the micropores in the anodized layer by filling the micropores with metal, surface-treating the sealed anodized layer so as to remove at least a portion of upper layer surface thereof and set the average surface roughness (Ra) to at most 30 nm, and subjecting the surface-treated anodized layer to electrodeposition so as to form metal particles on the metal filled into the micropores during sealing.

Abstract: Disclosed is a method of manufacturing a lithographic printing plate support, including a step of subjecting an aluminum plate to at least: a mechanical graining treatment using a brush and a slurry containing an abrasive to carry out mechanical graining such that the average surface roughness Ra is 0.25 ?m or more but less than 0.40 ?m, and an electrochemical graining treatment for carrying out electrochemical graining in an aqueous solution containing hydrochloric acid such that the average surface roughness Ra is 0.40 to 0.55 ?m, with the treatments being performed in this order, so as to obtain a lithographic printing plate support. By this method, a lithographic printing plate support which can be used for a presensitized plate of high sensitivity which has both an excellent scumming resistance and a good press life when made into a lithographic printing plate is obtained.

Abstract: A method of manufacturing a lithographic printing plate support having a step of subjecting an aluminum plate to an electrochemical graining treatment in which alternating current is passed through the aluminum plate in an aqueous solution containing at least chloride ion and nitrate ion so that total amount of electricity when the aluminum plate serves as an anode is 100 to 300 C/dm2. By this method, a lithographic printing plate support which makes it possible to obtain a presensitized plate having both an excellent scumming resistance and a good press life by a single electrochemical graining treatment.

Abstract: Described is a structural body including at least partially an aluminum member having on a surface an anodized film with micropores present, in which: the micropores have a coefficient of variation in pore size of 5 to 50%; and the micropores are each sealed with a metal. The structural body can generate localized plasmon resonance having a sufficiently large intensity and be produced at low cost through a simple production process, and having a large surface area.

Abstract: Disclosed is a presensitized plate, comprising: a support for a lithographic printing plate obtainable by forming on an aluminum plate at least an anodized layer, then performing sealing treatment; and an image recording layer which is provided on the support, includes an infrared absorber (A), a polymerization initiator (B), and a polymerizable compound (C), and can be removed with printing ink and/or dampening water. The presensitized plate of the present invention exhibits excellent on-machine developability, sensitivity, scumming resistance, chemical resistance and press life.

Abstract: A lithographic printing plate precursor comprises: an aluminum support that has been subjected to an alkali metal silicate treatment; and an image-recording layer comprising (A) an infrared absorbent, (B) a polymerization initiator and (C) a polymerizable compound, the image-recording layer being removable with at least one of a printing ink and a fountain solution, wherein the aluminum support has a surface where the amount of the Si element attached to the surface in the alkali metal silicate treatment is 1 mg/m2 to less than 10 mg/m2.