Ricoh Company, Ltd.

Ryo Miyakoshi

Daisuke Asahina

Satoshi Takahashi

Hiroshi Yamashita

Satoshi Kojima

Satoyuki Sekiguchi

Yoshihiro Moriya

Taichi Nemoto

Yuya Hirokawa

Shizuka Hashida

Chikako Hatta

Yoshimitsu Kumai

Hidetoshi Fujii

Akira Izutani

Tomoharu Miki

Takuya Yamazaki

Azumi Miyaake

Takuya Saiga

Ryota Iwasaki

An aqueous dispersion contains emulsion resin particles that contains pigment enclosing emulsion resin particles enclosing an inorganic pigment, wherein the pigment enclosing emulsion resin particles have a 50 percent cumulative volume particle diameter (D50) of from 40 to 300 nm as measured by laser diffraction scattering method, wherein the pigment enclosing emulsion resin particles have an average aspect ratio of from 1.0 to 1.5.

Aqueous dispersion, method of manufacturing aqueous dispersion, and ink

Provided is a foam sheet includes a composition including polylactic acid. The polylactic acid includes, as monomer units. D-lactic acid and L-lactic acid, and an amount of the D-lactic acid or the L-lactic acid in the polylactic acid is 98 mol % or greater. An amount of the polylactic acid is 98% by mass or greater relative to a total amount of organic matter in the foam sheet. Bulk density of the foam sheet is 0.063 g/cmor greater but 0.125 g/cmor less.

Foam sheet, product, formed product, and method for producing foam sheet

A foamed sheet including: a polylactic acid; and a filler, wherein the foamed sheet has a compressive stress of 0.2 Mpa or less when the cushioning coefficient of the foamed sheet is 10 or less; and wherein the foamed sheet has a puncture strength of 2 N or more when the sheet thickness of the foamed sheet is 2 mm.

Foamed sheet, product, and method for producing foamed sheet

White ink includes a crystalline urethane resin and a coloring material.

White ink, ink accommodating container, recording device, recording method, and recorded matter

An ink includes a coloring material, an acrylic resin particle, an organic solvent, and water, wherein a solid dry film of the ink has a breaking elongation ratio of 50 percent or more, a storage elastic modulus G' of 1.0&#xd7;10Pa or more at 50 degrees C., and a swelling ratio of 40 percent or less to ethylacetate.

Ink, method of manufacturing acrylic resin particle, printing method, ink accommodating unit, and inkjet printing device

A surface treatment liquid composition for a substrate is provided. The surface treatment liquid composition includes a water-soluble salt, water, and a resin particle including a resin having a structural unit represented by the following formula (1): where Rrepresents &#x2014;COO&#x2014;; each of Rand Rindependently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and n represents an integer of from 5 to 100.

Surface treatment liquid composition for substrate, ink set, recording method, recording device, storage container, and printed matter

A toner including polyester, wherein an amount of heat of a peak derived from the polyester in a range of from 40&#xb0; C. through 70&#xb0; C. during a cooling process is from 1.0 J/g through 15 J/g in differential scanning calorimetry performed under conditions below, &#x3c;measuring conditions&#x3e; after maintaining the toner at &#x2212;20&#xb0; C., heating the toner to 130&#xb0; C. at 10&#xb0; C./min (a first heating process), after maintaining the toner at 130&#xb0; C. for 1 minute, cooling the toner to &#x2212;50&#xb0; C. at cooling speed of 10&#xb0; C./min (the cooling process), and after maintaining the toner at &#x2212;50&#xb0; C. for 5 minutes, heating the toner to 130&#xb0; C. at 10&#xb0; C./min (a second heating process).

Toner, toner stored unit, image forming apparatus, and image forming method

A member for an image forming apparatus includes a surface layer including a block copolymer, wherein the block copolymer includes a polyamide block and a polyether block and the composition ratio of the polyether block to the polyamide block is from 0.2 to 1.5.

Intermediate transfer member for image forming apparatus, method of manufacturing the same and image forming apparatus

A toner including a polyester resin having an amorphous polyester segment is provided. The amorphous polyester segment includes a condensation polymerization product between a carboxylic acid and an alcohol. The carboxylic acid includes both aliphatic and aromatic dicarboxylic acids. The toner deforms with a deformation rate of from 1.0% to 5.0% under a pressure of 100 gf at 40&#xb0; C. and 80% RH. In a binarized image of an AFM phase image of the toner, first phase-contrast images serving as large-phase-difference portions are dispersed in second phase-contrast images serving as small-phase-difference portions, and the first phase-contrast images have a dispersion diameter of 100 nm or less. An endothermic quantity Q1 obtained in a first heating of DSC is from 10 to 50 J/g, and a ratio of an endothermic quantity obtained in the second heating Q2 to that in first heating Q1 is 0.65 or less.

Toner, process cartridge, developer, and image forming apparatus

A toner including a crystalline polyester and an amorphous polyester is provided. When the binder resin is extracted from the toner with tetrahydrofuran to obtain an extracted solution, and the extracted solution is heated to remove the tetrahydrofuran and obtain a deposit, the deposit contains spherical domains of the crystalline polyester having an average particle diameter of 7.0 &#x3bc;m or less.

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Kanagawa, Japan

Ryo Miyakoshi