Fujifilm Corporation

E Ink Corporation

Fuji Photo Film Company, Limited

Toshihide Aoshima

Kazutoshi Katayama

Hiroshi Kawakami

Tomoaki Yoshioka

Noriaki Sato

Tatsuo Mikami

Wataru Kikuchi

Mika Imamura

Yasuo Yamamoto

Chikara Manabe

Naoki Hiji

Daisuke Nakayama

Ryota Mizutani

Hisato Nagase

Kenta Yamazaki

Cao Jun

Hidenori Takahashi

Shota Suzuki

Yoshihiro Jimbo

Hidekazu Oohashi

Toyohisa Oya

Shinya Suzuki

Yoichi Hosoya

Mieko Seki

Takashi Katoh

Akinori Fujita

Yasuhiro Mitamura

Kimiatsu Nomura

Shinji Tsujimoto

Shiki Ueki

Reiko Inushima

Tatsuo Kawabuchi

Hideo Nagasaki

Mamoru Kuramoto

Isamu Watanabe

Soichiro Kitagawa

There is provided a pattern forming method that includes an exposure step of exposing a photosensitive film to laser light; and a development step of developing the photosensitive film after the exposure to obtain a pattern, where the photosensitive film contains at least one precursor selected from the group consisting of a polyimide precursor and a polybenzoxazole precursor, and an onium salt.

Pattern forming method, photosensitive resin composition, cured film, laminate, and device

There are provided a photosensitive resin composition containing at least one precursor selected from the group consisting of a polyimide precursor and a polybenzoxazole precursor, a compound having a sulfurous ester structure, and a photoradical polymerization initiator, and satisfies at least one of the following conditions 1, . . . , or 3; a pattern forming method using a photosensitive film formed from the photosensitive resin composition; a cured film formed from the photosensitive resin composition; a laminate including the cured film; and a device having the cured film or the laminate.

Photosensitive resin composition, pattern forming method, cured film, laminate, and device

The carbon black composition for manufacturing a particulate magnetic recording medium contains carbon black, vinyl chloride resin containing one or more epoxy groups, the secondary monoamine denoted by formula 1, and solvent, 

Carbon black composition for manufacturing particulate magnetic recording medium and method of manufacturing particulate magnetic recording medium

The magnetic recording medium contains, in a magnetic layer, a fatty acid ester and a polyester resin having a number average molecular weight of greater than or equal to 1,000 but less than 20,000, and containing a structural unit derived from a polyvalent carboxylic acid and a structural unit derived from a polyol, as well as 10 mol % to 50 mol % of a structural unit, derived from a cyclic polyvalent carboxylic acid selected from the group consisting of an alicyclic polyvalent carboxylic acid and an aromatic polyvalent carboxylic acid, per 100 mol % of a combined total of the above structural units, and one or more partial structures selected from the group consisting of the following partial structures: wherein each of Land Lindependently denotes a divalent connecting group, and each of Zand Zindependently denotes a monovalent group denoted by &#x2014;OM or a monovalent group denoted by &#x2014;OA.

Magnetic recording medium having specified polyester resin additive and magnetic recording medium composition

The metal oxide particle dispersion for manufacturing a particulate magnetic recording medium contains metal oxide particles, solvent, and a polyester compound having one or more groups selected from the group consisting of a carboxyl group and a salt thereof, a phosphoric acid group and a salt thereof, a hydroxyl group and a nitrogen-substituted alkylene group, but substantially not containing ferromagnetic powder.

Metal oxide particle dispersion for manufacturing particulate magnetic recording medium, method of manufacturing magnetic layer-forming composition of particulate magnetic recording medium and method of manufacturing particulate magnetic recording medium

An aspect of the present invention relates to a composition, which is a composition for a magnetic recording medium and comprises an isocyanate compound in the form of an adduct of a polyhydroxyl compound having one or more aromatic carbon rings and three or more hydroxyl groups per molecule with a polyisocyanate having two or more isocyanate groups per molecule.

Composition for magnetic recording medium and magnetic recording medium

The magnetic recording medium has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein the ferromagnetic powder is hexagonal ferrite powder containing, based on number of particles, greater than or equal to 80% isotropic particles that satisfy the relation 1: major axis length/minor axis length &#x3c;1.2, with an average particle size of the hexagonal ferrite powder being less than or equal to 30 nm, and a squareness in a vertical direction of the magnetic layer being greater than or equal to 0.65 but less than or equal to 1.00.

Magnetic recording medium using hexagonal ferrite powder

There is provided an electrophoretic particle which contains a core material particle formed of a composition containing a resin, a nitrogen-containing heterocyclic compound having any one of an imino group, a methylol group and an alkoxymethyl group in the molecule and a heterocyclic ring having a nitrogen atom, and a coloring agent.

Electrophoretic particle, electrophoretic particle dispersion liquid, display medium, and display device

The magnetic recording medium comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, and further comprises a compound denoted by Formula (1): wherein, in Formula (1), X denotes &#x2014;O&#x2014;, &#x2014;S&#x2014;, or NR&#x2014;; each of R and Rindependently denotes a hydrogen atom or a monovalent substituent; L denotes a divalent connecting group; Z denotes a partial structure of valence n comprising at least one group selected from the group consisting of carboxyl groups and carboxylate groups; m denotes an integer of greater than or equal to 2, and n denotes an integer of greater than or equal to 1.

Magnetic recording medium and coating composition for magnetic recording medium

The magnetic recording medium composition contains ferromagnetic powder, binder, and a crosslinkable component selected from the group consisting of a component capable of forming a crosslinking structure by a radical reaction, a component capable of forming a crosslinking structure by an ionic reaction, and a component capable of forming a crosslinking structure by a pericyclic reaction, wherein the crosslinkable component contains at least polyester, and the polyester has a weight average molecular weight ranging from 1,000 to 20,000, as well as contains, per molecule, one or more acidic groups, and one or more reactive groups selected from the group consisting of a radical reactive group, an ionic reactive group, and a pericyclic reactive group.

Magnetic recording medium composition and method of manufacturing magnetic recording medium

An aspect of the present invention relates to a magnetic recording medium, which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein the magnetic layer further comprises a compound which has a weight average molecular weight of equal to or more than 1,000 but less than 20,000 and is denoted by formula (1): wherein, in formula (1), Adenotes a monovalent polymer group, each of Rand Rindependently denotes a single bond or a divalent connecting group, Rdenotes a hydrogen atom or a monovalent substituent, m denotes an integer of equal to or greater than 2, multiple instances of R, R, A, and Rthat are present can be identical or different, Adenotes a hydrogen atom or a monovalent substituent denoted by &#x2014;OR&#x2014;Z, Rdenotes a single bond or a divalent connecting group, Z denotes a monovalent acid group, among multiple instances of Athat are present, at least one denotes a monovalent group denoted by &#x2014;O&#x2014;R&#x2014;Z, and X denotes a connecting group of valence m.

Magnetic recording medium and magnetic coating composition for magnetic recording medium

An aspect of the present invention relates to a magnetic recording medium, which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein the magnetic layer further comprises a compound which has a weight average molecular weight of equal to or more than 1,000 but less than 20,000 and is denoted by formula (1): wherein, in formula (1), A denotes a monovalent substituent, Rdenotes a single bond or a divalent connecting group, and m denotes an integer ranging from 2 to 4, multiple instances of A and Rthat are present can be identical or different, at least one of the multiple instances of A that are present denotes a monovalent polymer group and X denotes a heterocyclic group of valence m.

The present invention provides a barrier laminate with enhanced heat resistance performance, comprising at least one organic layer and at least one inorganic barrier layer, the organic layer being formed by curing a polymerizable composition comprising a polymerizable compound having two or more polymerizable groups, and the total quantity of uncured component in the organic layer being 1.5 weight % or less of the total weight of the organic layer, and a novel polymerizable compound that can preferably used as the polymerizable compound, which is denoted by general formula (11): in general formula (11), Rdenotes hydrogen atom or methyl group; Rdenotes methyl group or cyclohexyl group; n denotes an integer of 0 to 2; and each instance of X denotes a group comprising a polymerizable group.

Barrier laminate and novel polymer compound

There is provided a dispersion liquid for electrophoretic display, containing a dispersion medium, a colored electrophoretic particle groupthat is dispersed in the dispersion medium and migrates in the dispersion medium according to an electric field, a non-electrophoretic particle groupthat is dispersed without migrating in the dispersion medium and has a color different from that of the electrophoretic particle group, and a compound having a neutral polar group and a hydrophobic group, which is contained in the dispersion medium in a ratio of about 0.01 to about 1 mass % based on the entire dispersion liquid.

Dispersion liquid for electrophoretic display, display medium, and display device

A colorant-containing particle that comprises a colorant and a polymer represented by (A-R)&#x2014;R&#x2014;(R&#x2014;P)wherein Ris organic linking group; Ris single bond or divalent linking group; Ais monovalent organic group containing organic dye residue etc., m is 1 to 8, n is 2 to 9, m+n is 3 to 10; Ris single bond or divalent linking group; Pis polymer backbone containing Si, has excellent dispersibility and dispersion stability.

Growing community of inventors

Minami-ashigara, Japan

Toshihide Aoshima