Konica Corporation

Konica Minolta Opto, Inc.

Konica Minolta Photo Imaging, Inc.

Kenzo Kasahara

Masaru Tsuchiya

Koichi Saito

Yoshihiro Mochizuki

Rumiko Yamada

Yoichi Saito

Keiji Ohbayashi

Hirotaka Iijima

Kazuaki Nakamura

Naoki Sato

Yasushi Irie

Satomi Kawabe

Akira Onodera

Osamu Hatano

A process for producing a cellulose-ester-resin-containing protective film for polarizers through film formation by melt casting. The protective film diminishes long-period optical unevenness and suffers no unevenness even after long-term storage. Also provided are a protective film for polarizers, a polarizer employing the film, and a liquid-crystal display. The process for producing a protective film for polarizers is a process for producing by the melt casting method a polarizer-protective film containing a cellulose ester resin. The process for producing a protective film for polarizers is characterized in that the protective film contains at least one compound selected among compounds represented by the following general formula (I) and compounds having an acrylate or methacrylate group and a phenolic hydroxy group in the same molecule and that the protective film extruded from a casting die at a draw ratio of 10-30 during film formation by melt casting is transferred while holding/pressing it between a touch roll having an elastic surface and a cooling roll.

Manufacturing method of polarizing plate protective film, polarizing plate protective film, polarizing plate, and liquid crystal display device

A method for producing an optical film is disclosed. A cellulose ester, a sugar ester prepared by esterification of a sugar compound formed by 1 to 12 of structures selected by a furanose structure and a pyranose structure and an acryl type polymer having a weight average molecular weight of from 5,000 to 30,000 are subjected to melt-casting.

Method for producing optical film

A cellulose ester film comprising a cellulose ester and a compound containing: an acrylate group or a methacrylate group; and a phenolic hydroxyl group, in the molecule.

Cellulose ester film, production method of the same, polarizing plate and liquid crystal display

A production method of a porous medium comprising a non-water-absorptive support and a porous layer provided on the support is disclosed. The method includes steps of, 

Production method of porous medium

An ink-jet recording sheet containing a support having the following layers in the order: (a) a porous layer; and (b) a surface porous layer containing an organic particle A or an organic particle B, the organic particle A being insoluble in water and soluble in or swollen in a water soluble organic solvent having a SP value of 18.41 to 30.69 (MPa)and a boiling point of not less than 120&#xb0; C.; the organic particle B comprising a copolymer having a specific recurring unit in an amount of not less than 5 weight % based on the total weight of the copolymer; the organic particle A and the organic particle B each having an average particle size of not more than 100 nm and a glass transition temperature of not less than 70&#xb0; C., wherein the porous layer or the surface porous layer contains a compound having a polyvalent metal element.

Ink-jet recording sheet

An ink-jet recording paper is disclosed. The ink-jet recording paper has a support and a porous ink receiving layer comprising fine filler particles having an average particle diameter of from 5 to 100 nm, and the ink receiving layer contains a polymer particle dispersion of a cationic or nonionic polymer having a glass transition point of from &#x2212;30&#xb0; C. to 40&#xb0; C. and an average particle diameter of from 1 nm to 50 nm.

Ink-jet recording paper

An ink-jet paper is disclosed. The ink-jet paper has an ink receiving layer and a porous layer on the first ink absorption porous layer and the ink absorption porous layer contains organic fine particles which contains a polymer containing a repeating unit represented by Formula 1 as a copolymer constituent in a ratio of not less than 5% by weight and has a glass transition point Tg of not less than 70&#xb0; C. and an average particle diameter of not more than 100 nm

An ink-jet recording sheet comprising a support and an ink-absorbable layer is disclosed. The ink-absorbable layer is a void layer containing fine inorganic particles having a dispersion degree of no more than 2 and a hydrophilic binder. The ink-jet recording sheet has a specular gloss specified by JIS Z8741, of at least 20 percent at 60 degrees of the surface of said ink absorbable layer, and exhibits the specular gloss such that 60-degree specular gloss of an ink-recorded part is 3 percent more than that of a nonink-recorded part.

Ink-jet recording sheet, ink-jet recording method and preparing method of ink-jet sheet

Ink-jet recording method and recorded matter

In an ink jet recording sheet having an ink absorptive layer comprising hydrophilic binder, fine particles having average particle diameter of not more than 200 nm and water soluble cationic polymer having specific structure, wherein the layer surface pH of said ink absorptive layer of 3 to 6.

Ink jet recording sheet

An ink jet recording sheet is disclosed. The recording sheet comprises a water non-absorptive support and a porous ink absorptive layer comprising dicyandiamide polycondensation product on the support.

An ink-jet recording sheet has a recording layer comprising a hydrophilic binder, fine inorganic particles having an average primary particle diameter of 30 nm or less, and a cation type water-soluble mordant having an average molecular weight of 50,000 or less. An ink-jet recording method in which excellent water resistance is provided.

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Hachioji, Japan

Kenzo Kasahara