Ricoh Company, Ltd.

Shizuka Hashida

Hiroshi Yamashita

Taichi Nemoto

Yuka Mizoguchi

Minoru Masuda

Hiroshi Yamada

Masanori Rimoto

Ryo Miyakoshi

Yoshimitsu Kumai

Ryota Inoue

Kazuoki Fuwa

Tomoharu Miki

Toma Takebayashi

Junko Yamaguchi

Suzuka Karato

Maia Kamei

Keisuke Ohta

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

Provided is a toner including at least: a non-crystalline polyester resin; and a crystalline polyester resin, wherein when a cross-section of the toner is observed, the crystalline polyester resin has a maximum length of 100 nm or greater but less than 500 nm, and a ratio Dv/Dn of a volume average diameter Dv of the crystalline polyester resin to a number average diameter Dn of the crystalline polyester resin is less than 1.20.

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

A toner is provided. The toner includes toner particles each comprising a binder resin and plate-like pigment particles. In a cross-section of the toner, the plate-like pigment particles have an average thickness D of 1.0 &#x3bc;m or less and a maximum length L of 5.0 &#x3bc;m or more. In a fixed toner image formed with the toner, the plate-like pigment particles have a maximum width W of 3.0 &#x3bc;m or more. The toner has a circularity of from 0.950 to 0.985.

Toner, method for producing toner, toner storage unit, and image forming apparatus

A toner is provided. The toner comprises a glittering pigment and a coloring pigment. The glittering pigment is disposed inside the toner. The coloring pigment comprises a yellow pigment comprising an isoindoline pigment.

Toner, developer, process cartridge, image forming apparatus, image forming method, and method for manufacturing toner

A toner includes a binder resin. Particles of a metal complex or a salt of an aromatic carboxylic acid derivative having a number-average particle diameter of from 0.2 &#x3bc;m to 1.0 &#x3bc;m are present on the surface of the toner. A coverage of the particles of a metal complex or a salt of an aromatic carboxylic acid derivative over the surface of the toner is from 10% to 50%.

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

A toner fixable on an image bearer with heat. The toner has a first storage modulus of from 1&#xd7;10to 1&#xd7;10Pa, measured at 100&#xb0; C. when being heated, and a second storage modulus of from 1&#xd7;10to 1&#xd7;10Pa, measured at 100&#xb0; C. when being cooled, the first storage modulus and second storage modulus being measured by a rheometer, and the second storage modulus at 100&#xb0; C. when being cooled is higher than the first storage modulus at 100&#xb0; C. when being heated.

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Saitama, Japan

Shizuka Hashida