Abstract: The invention provides an antiglare material which exhibits excellent antiglare property by preventing shining of external light in a display and is suitable for display of vivid and high-definition images free of any glare, and a polarizing film using the same. The antiglare material includes a transparent substrate provided with a roughened surface layer on one or both sides thereof. The roughened surface layer is formed from an ultraviolet curing resin containing at least an epoxy compound and a photo-cationic polymerization initiator, and beads of a crosslinked acrylic resin.

Abstract: There are provided a photosensitive resin film which can eliminate the step of development and the like, that is, can simplify the process, and in addition can form an even fluorescent substance layer in intimate contact with the surface of cells, and a back plate for PDP using the film. The photosensitive resin film comprises a substrate film and a pressure-sensitive adhesive, photosensitive resin layer provided on one side of the film, wherein the photosensitive resin layer comprises a photosensitive resin that contains a fluorescent substance and, upon exposure, causes the tackiness of exposed areas to be lowered.

Abstract: This invention provide an adhesive tape and a liquid adhesive for electronic parts having sufficient thermal resistance and reliability. The adhesive tape comprises adhesive layers composed of at least a polyimide comprising the repeating units represented by the formulas (1) and (2) on both sides of the substrate, one of said adhesive layer having a higher glass transition temperature than that of the other adhesive layer: ##STR1## wherein X is --SO.sub.2 -- and/or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--,Ar is a divalent group containing aromatic rings, and R is an alkylene group having 1 to 10 carbon atoms or --CH.sub.2 OC.sub.6 H.sub.4 --, and n means an integer of 1 to 20.The stustrate may be a resin layer composed of the above mentioned polyimide.

Abstract: A magnetic recording medium is made by applying a coating mixture having magnetic particles dispersed in a binder and drying the coating mixture so as to produce a coding layer containing tamper-proof identifier coding information comprising designed patterns, letters, numerals and bar-code type patterns. Another magnetic layer for recording regular magnetic data can be provided above or below the coding layer. The coding information can neither be read or altered by ordinary magnetic reader. The magnetic recording medium is therefore useful for such applications as shopping cards, pre-paid cards, retail store cards; financial cards including credit cards, insurance cards; travelling cards including transit passes, tickets; and identification cards including passports, birth certificates and other personal identification cards.

Abstract: This invention provide an adhesive tape and a liquid adhesive for electronic parts having sufficient thermal resistance and reliability. The adhesive tape comprises an adhesive layer composed of at least a polyimide comprising the repeating units represented by the formulas (1) and (2), provided on surface of a heat resistance film or a release film: ##STR1## wherein X is --SO.sub.2 -- and/or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, Ar is a divalent group containing aromatic rings, and R is an alkylene group having 1 to 10 carbon atoms or --CH.sub.2 OC.sub.6 H.sub.4 --, and n means an integer of 1 to 20.

Abstract: An ink jet recording sheet comprising: a support member; a first ink receiving layer comprising at least silica which is on the support member, and a second ink receiving layer comprising at least silica in different conditions from the conditions in the first ink receiving layer, and which is on the first ink receiving layer.

Abstract: A lithographic printing plate is produced using a lithographic printing original plate which is composed of a paper support having a volume electric resistance adjusted to 1.times.10.sup.10 .OMEGA..multidot.cm or below by undergoing a conductive treatment, a metallic conductive layer provided on one surface of the support, a photoconductive layer composed of zinc oxide and a binder provided on the metallic conductive layer, and a laminate layer composed of an .alpha.-polyolefin having a volume electric resistance adjusted to 1.times.10.sup.10 .OMEGA..multidot.cm or below by undergoing a conductive treatment provided on the other surface of the support. The lithographic printing original plate is subjected to a negative corona discharge from the side having the photoconductive layer and in this charging, a conductor having an earth potential is contacted with the metal conductive layer from the side of the lithographic printing original plate, where an edge of metal conductive layer is exposed.

Abstract: An adhesive tape for TAB having an organic insulating film, an adhesive layer formed on the organic insulating film and a protection layer formed on the adhesive layer, the adhesive layer being any one of a layer containing a polyamide resin having an amine value of at least 3 and an epoxy resin, a layer containing a polyamide resin and a powdery inorganic filler, a layer containing an epoxy resin having a siloxane structure in its main chain, and a layer containing at least one maleimide compound.

Abstract: A polyester resin for a toner whereina ratio of insoluble material in THF is comprised at 5 weight % or less,a ratio of soluble polymer having a molecular weight of 1.times.10.sup.6 or greater in THF is comprised at a range of 1 weight % to 10 weight %,a soluble polymer having a molecular weight greater than 1.times.10.sup.5 in THF is comprised in a range of 10 weight % to 20 weight %, and the following relationship is satisfied W1>W2wherein a ratio of a soluble polymer having a molecular weight less than 1.times.10.sup.4 in THF is shown by W1, a ratio of a soluble polymer having a molecular weight greater than 1.times.10.sup.4 and less than 1.times.10.sup.5 in THF is shown by W2.

Abstract: An adhesive tape for electronic parts, comprising(a) a heat resistant base film, and(b) an adhesive layer laminated on at least one surface of said base film, said adhesive layer comprising(i) a resol type phenol resin, and(ii) an acrylonitrile/butadiene copolymer,in a proportion of from 100 to 500 parts by weight of said resol type phenol resin per 100 parts by weight of said acrylonitrile/butadiene copolymer,said resol type phenol resin being selected from the group consisting of bisphenol A type resins, alkylphenol type resins, phenol type resins and their co-condensed type phenol resins which contain as the phenol component at least one member selected from the group consisting of bisphenol A, alkylphenols and phenol.

Abstract: This invention provide an adhesive tape and a liquid adhesive for electronic parts having sufficient thermal resistance and reliability. The adhesive tape comprises an adhesive layer composed of at least a polyimide comprising the repeating units represented by the formulas (1) and (2), provided on surface of a heat resistance film or a release film: ##STR1## wherein X is --SO.sub.2 -- and/or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, Ar is a divalent group containing aromatic rings, and R is an alkylene group having 1 to 10 carbon atoms or --CH.sub.2 OC.sub.6 H.sub.4 --, and n means an integer of 1 to 20.

Abstract: An antiglare material capable of exhibiting an excellent antiglare effect by preventing imaging reflection of an external light source and suitable for an image display with sharpness and high resolution as well as a polarizing film by utilizing the same. The antiglare material of the invention is a transparent substrate of which at least one of the surfaces is roughened to a predetermined surface roughness. The polarizing film of the invention is a laminate consisting of a first protective layer which is the above defined antiglare material and a second protective layer laminated onto the unroughened surface of the first protective layer with intervention of a polarizing substrate. The roughened surface of the transparent substrate in the above mentioned antiglare material, which may be used in the above described polarizing film, preferably has a haze value in the range from 1 to 25 according to JIS K7105 and the transparent substrate is preferably a transparent film.

Abstract: This invention provide an adhesive tape and a liquid adhesive for electronic parts having sufficient thermal resistance and reliability. The adhesive tape comprises an adhesive layer composed of at least a polyimide comprising the repeating units represented by the formulas (1) and (2), provided on surface of a heat resistance film or a release film: ##STR1## wherein X is --SO.sub.2 -- and/or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, Ar is a divalent group containing aromatic rings, and R is an alkylene group having 1 to 10 carbon atoms or --CH.sub.2 OC.sub.6 H.sub.4 --, and n means an integer of 1 to 20.

Abstract: An adhesive for electronic parts, which can be used for bonding and cured at a relatively low temperature and has sufficient heat resistance and reliability, and an adhesive tape for electronic parts, for which the above adhesive is adapted, the adhesive being a liquid adhesive obtained by dissolving an acrylonitrile-butadiene copolymer as Component (a), a phenolic resin as Component (b), a compound having at least 2 maleimide groups as Component (c) and a diamine compound of the general formula (1) specified in claim 1, and/or a polysiloxane compound terminating with an amino group at each terminal, having a weight average molecular weight of 200 to 7,000 and having the general formula specified in claim 1, as Component (d) in an organic solvent, and in which the total amount of Components (b), (c) and (d) per 100 parts by weight of Component (a) is 10 to 900 parts by weight, the amount of Component (b) based on the total amount of Components (b), (c) and (d) is 10 to 90% by weight, and the amount of amino g

Abstract: An electrophotographic toner containing a binder resin containing an ester which has 2-4 ester bonds and is obtained from a long-chain, linear saturated alcohol as an alcohol component or a long-chain linear saturated fatty acid as an acid component, can be fixed at a low fixing temperature, is free of any practical problem concerning offset-free properties, and has excellent fixing strength to a receptor paper sheet and excellent image characteristics.

Abstract: The present invention provide a novel polyimide which is soluble in organic solvents and excels in heat resistance, and to a process for producing the polyimide. The polyimide of the present invention comprises a repeating unit represented by the formula (1) and having a number average molecular weight of from 4,000 to 200,000. ##STR1## wherein X is --SO.sub.2 -- or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

Abstract: The present invention is to provide an electrostatic chucking device having improved heat conductivity and at the same time increased adsorption area and improved adsorptity as well as having no uneveness on the wafer-provided face. The electrostatic chucking device of the present invention comprises a metal base, an adhesive layer, an electrode layer comprising a metal-deposited or metal-plated layer, and an electrically insulating layer possessing a face for providing a substance to be adhered by suction, laminated thereon in this order.

Abstract: An adhesive tape for TAB having an organic insulating film, an adhesive layer formed on the organic insulating film and a protection layer formed on the adhesive layer, the adhesive layer being any one of a layer containing a polyamide resin having an amine value of at least 3 and an epoxy resin, a layer containing a polyamide resin and a powdery inorganic filler, a layer containing an epoxy resin having a siloxane structure in its main chain, and a layer containing at least one maleimide compound.

Abstract: A polyester resin for a toner, wherein a maximum molecular weight is in a range of 1.times.10.sup.3 to 8.times.10.sup.3, Mw/Mn is in a range of 20 to 200, a proportion of component having a molecular weight of 1.times.10.sup.5 or less is comprised at a range of 80 weight % or greater, and at least one component selected from the group consisting of polycarboxylic acid having more than 3 carboxyl groups and polyalcohol having more than 3 hydroxyl groups.

Abstract: An adhesive tape for electronic parts, comprising (a) a heat resistant base film, and (b) an adhesive layer laminated on at least one surface of said base film, said adhesive layer comprising(i) a resol type phenol resin, and(ii) an acrylonitrile/butadiene copolymer,in a proportion of from 100 to 500 parts by weight of said resol type phenol resin per 100 parts by weight of said acrylonitrile/butadiene copolymer, said resol type phenol resin being selected from the group consisting of bisphenol A type resins, alkylphenol type resins, phenol type resins and their co-condensed type phenol resins which contain as the phenol component at least one member selected from the group consisting of bisphenol A, alkylphenols and phenol.