Fuji Photo Film Company, Limited

Fujifilm Corporation

Hiromichi Tachikawa

Hiroaki Yokoya

Fumiaki Shinozaki

Tomoaki Ikeda

Syu Watarai

Nobuo Suzuki

Hideo Sato

Masao Kitajima

Kazuo Ishii

Jun Takeda

Syunichi Kondo

Toshifumi Inno

Junji Nakano

Yutaka Sakasai

Yohnosuke Takahashi

Yohonosuke Takahashi

Toshiaki Aoai

Keiichi Adachi

Seiji Horie

Shinya Watanabe

Sadao Osawa

Kenji Sano

Mamoru Sakurazawa

Akira Ikeda

Keiji Akiyama

Masaya Suzuki

Yonosuke Takahashi

Masataka Murata

Teppei Ikeda

Toshio Uchida

Yoshihiko Urabe

Shu Watarai

Yorimiti Yabuta

Katuzi Kitatani

Nobuo Suganuma

A cellulose acylate laminate film, which comprises a low-substitution layer comprising a non-phosphate compound and a cellulose acylate having a total degree of acyl substitution of more than 2.0 and less than 2.7 and a high-substitution layer comprising a cellulose acylate having a total degree of acyl substitution of more than 2.7&#x3c;Z2, wherein Re at a wavelength of 550 nm is the same as or larger than Re at a wavelength of 440 nm.

Cellulose acylate laminate film, method for producing cellulose acylate laminate film, polarizer and liquid crystal display device

A protective film for polarizers, including a cellulose resin having an acyl substituent with from 2 to 4 carbon atoms and having a degree of acyl substitution of from 2.1 to 2.7, which satisfies 25&#x2266;Re&#x2266;100 and 50&#x2266;Rth&#x2266;300 and in which the cellulose resin contributes to expression of at least 40% of the Re in the film.

Protective film for polarizers

A hydrophilic layer and an overcoat layer are provided in this order on a heat-sensitive layer having an ink receiving surface, so as to form an original (plate) for a lithographic printing plate. The overcoat layer can be removed during printing. A system capable of forming an inorganic hydrophilic matrix by sol-gel conversion is provided in the hydrophilic layer. Adhesion between the heat-sensitive layer and the hydrophilic layer decreases in a heated region through image processing. Emulsion ink is supplied to the plate surface during printing, whereby the overcoat layer and the hydrophilic layer at an image portion are removed with a hydrophilic component of the emulsion ink. Thus, with a heat-sensitive original that can be subjected to heat-mode prepress using laser exposure, good printed matter can be stably obtained, irrespective of balance between image and non-image portions, without using wetting water.

Lithographic printing process

Disclosed are a lithographic printing plate precursor that can record images by laser beam scanning exposure based on digital signals and can be printed by easy development processing or development processing on a printing machine, comprising a support having thereon an ink-receptive light-heat conversion layer containing a compound converting laser light to heat and a hardened hydrophilic layer in this order, wherein a part of said light-heat conversion layer remains at a laser light-irradiated area of the lithographic printing plate precursor, and a plate-making method of a lithographic printing plate using the same.

Lithographic printing plate precursor and plate-making method of lithographic printing plate using the same

An electrophotographic printing plate precursor is disclosed, which is formed by forming a toner image on a photoconductive layer of an electrophotographic photoreceptor comprising at least a conductive support and a photoconductive layer and then by removing a non-image area on the photoconductive layer other than a toner-image area, wherein said photoconductive layer comprises at least (1) an organic photoconductive compound, (2) a binder resin which is dissolved or swelled in an alkaline solution, and (3) a phosphoric acid or an analogue thereof.

Electrophotographic printing plate precursor

A printing plate for electrophotographic type plate making having a photoconductive layer on an electrically conductive support. The photoconductive layer includes an organic photoconductive compound and a binding resin containing a copolymer including an acrylic acid ester or methacrylic acid ester having an aromatic ring and a vinyl polymerizable monomer having one to three acidic functional groups.

Printing plate for electrophotographic type plate making

An electrophotographic printing plate precursor is disclosed, which comprises an electrically conductive support having thereon a photoconductive layer containing a photoconductive pigment and binder resin which is designated to undergo an electrophotographic process wherein a toner image is formed and the photoconductive layer in the non-image portion other than the toner image portion is then removed to form a printing plate, wherein said photoconductive pigment is a phthalocyanine pigment and said photoconductive layer further comprises at least one compound selected from the compounds represented by the formulae (I), (II) and (III): ##STR1## wherein Z represents a sulfur atom or an oxygen atom, R.sup.1 represents an alkyl group, an alkoxy group, a single ring or double condensed ring aryl group, a single ring or a double condensed ring aryloxy group, or a univalent group derived from a heterocyclic ring, and the two R.sup.1 groups in general formula (III) may be the same or different; R.sup.2 and R.sup.3 each represent a hydrogen atom, an alkyl group, a single ring or double condensed ring aryl group, or a univalent group derived from a heterocyclic ring, and R.sup.2 and R.sup.3 may be the same or different; R.sup.4 represents a methylene group, a polymethylene group, a branched alkanediyl group or an arylene group, and R.sup.1 and R.sup.2, or R.sup.2 and R.sup.3 may be bonded together.

Prevention of printing stains occurring on positions corresponding to the end parts of the printing plate in the case of printing on a rolled paper by a rotary press machine, as in newspaper printing can be accomplished by a process for the production of a lithographic printing plate, which comprises subjecting a lithographic printing plate transported in a predetermined direction by a transporting means to a beveling treatment of end parts thereof and then subjecting the beveled parts to a treatment for rendering hydrophilic.

Process for the production of a lithographic printing plate with beveled

A self-dispersing graft-copolymer capable of self-dispersion in a high-electrical insulating carrier liquid to form grains therein. The graft-copolymer is combined with a pigment or dye to provide a self-dispersing solid colorant, which is suitable as a toner or toner supply for a liquid developing agent for electrostatic photography. The colorant is also applicable to a printing ink, an ink for an ink-jet system or a coating paint composition. The colorant well self-disperses in a carrier liquid to form well dispersed grains therein without the necessity of mechanical dispersing means.

Self-dispersing colorant, liquid developing agent for electrostatic

In an electrophotographic lithographic printing plate precursor comprising a photoconductive layer on an electrically conductive support having a hydrophilic surface thereon which is subjected to a process which comprises formation of a toner image on said photootoconductive layer, and then removal of said photoconductive layer from nonimage portions other than said toner image portion to form a lithographic printing plate, an electrophotographic lithographic printing plate precursor treated with a water-soluble or water-dispersible solid material (edge face treatment) at the edge face thereof and a water-soluble or water-dispersible solid adge face treatment therefor. In a preferred embodiment, the edge face treatmetment is a water-soluble or water-dispersible solid drawing material.

Electrophotographic lithographic printing plate precursor and edge face

A novel electrophotographic printing plate precursor and a novel photosensitive lithographic printing plate precursor are disclosed, in which a specific layer is formed on the end face thereof.

Electrophotographic printing plate precursor and photosensitive

A novel electrophotographic photoreceptor for copiers or photoprinters is provided comprising a photoconducting layer provided on an electrically conductive support, wherein said photoconducting layer comprises a phthalocyanine pigment and at least one compound represented by the general formula (I) or (II): ##STR1## wherein Z represents a sulfur atom or oxygen atom; R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, alkyl group, aryl group or aralkyl group; A represents an alkyl group, aryl group, aralkyl group or monovalent heterocyclic group; and B represents an alkylene group, arylene group, polymethylene group or aralkylene group. A novel electrophotographic printing plate precursor is also provided which comprises a photoconducting layer containing at least a photoconducting pigment and a binder resin on an electrically conductive support and is adapted to form a printing plate in an electrophotographic process comprising forming a toner image, and then removing said photoconducting layer from the non-image portions except said toner image portions, characterized in that said photoconducting pigment is a phthalocyanine pigment and said photoconducting layer further comprises a compound represented by the general formula [I] or [II]: ##STR2## wherein Z represents a sulfur atom or oxygen atom; R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, alkyl group, aryl group or aralkyl group; A represents an alkyl group, aryl group, aralkyl group or monovalent heterocyclic group; and B represents an alkylene group, arylene group, polymethylene group or aralkylene group.

Electrophotographic photoreceptor and electrophotographic printing plate

An electrophotographic printing plate precursor comprising an electrically-conductive support having thereon a photoconductive layer containing at least a photoconductive compound and a binding resin wherein said binding resin is an alkali-soluble polyurethane resin.

Electrophotographic printing plate precursor containing alkali-soluble

A electrophotographic printing plate precursor comprising an electrically-conductive support having thereon a photoconductive layer containing at least photoconductive pigments and a binder resin, wherein said photoconductive pigments are phthalocyanine pigments and said photoconductive layer further comprises a compound represented by the general formula (I), (II) or (III): ##STR1## wherein Z represents a sulfur or oxygen atom; Ar represents a monovalent aromatic hydrocarbon group or monovalent heterocyclic group; R.sub.3 represents a hydrogen atom, alkyl group, aryl group or aralkyl group; Ar and R.sub.3 may together form a ring; and R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group, aryl group or aralkyl group, with the proviso that the aromatic hydrocarbon group and heterocyclic group represented by Ar and the alkyl, aryl and aralkyl group represented by R.sub.1, R.sub.2 and R.sub.3 may be further substituted by substituents, ##STR2## wherein Z represents a sulfur or oxygen atom; R.sub.4 to R.sub.9, which may be the same or different, each represents a hydrogen atom, alkyl group, aryl group or monovalent group derived from heterocyclic group; R.sub.4 and R.sub.5 or R.sub.6 and R.sub.7 may be connected to each other; R.sub.4 to R.sub.7 may be connected to each other to form a crosslinkable ring as a whole in the general formula (II); and R.sub.10 represents a divalent arylene, aralkylene, polymethylene or alkylene group.

A method for oil-densensitization treatment of a lithographic printing plate is disclosed, comprising treating the plate with an aqueous solution containing a silicate represented by the formula SiO.sub.2 /M.sub.2 O (wherein M is an alkali metal atom) and a water-soluble resin.

Growing community of inventors

Kanagawa, Japan

Hiromichi Tachikawa