Ricoh Company, Ltd.

Sohichiroh Iida

Yasuo Suzuki

Hitoshi Iwatsuki

Akira Saito

Yasuyuki Yamashita

Kiichi Kamoda

Shinzo Higuchi

Nozomu Tamoto

Mitsuru Naruse

Shigenori Yaguchi

Toshiyuki Mutoh

Yasutomo Aman

Toshiyuki Iseki

Yunsheng Sun

Satoshi Ogawa

Shinsuke Nagai

Yoshihiko Furugohri

A resin powder for solid freeform fabrication has a 50 percent cumulative volume particle diameter of from 5 to 100 μm and a ratio (Mv/Mn) of a volume average particle diameter (Mv) to the number average particle diameter (Mn) of 2.50 or less and satisfies at least one of the following conditions (1) to (3):

Resin powder for solid freeform fabrication, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication object

A resin powder for solid freeform fabrication includes a particle having a pillar-like form, wherein the ratio of the height of the particle to the diameter or the long side of the bottom of the particle is 0.5 to 2.0, the particle has a 50 percent cumulative volume particle diameter of from 5 to 200 μm, and the ratio (Mv/Mn) of the volume average particle diameter (Mv) to the number average particle diameter (Mn) of the particle is 2.00 or less.

A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.

Fiber aggregation, short fiber and method of manufacturing the same, and film and method of manufacturing the same

Provided is a resin particle producing method including: a fiber aggregate producing step of directly joining fibers containing a thermoplastic resin with each other to obtain a fiber aggregate; and a particle forming step of forming the fiber aggregate into particles to obtain resin particles.

Resin particle producing method

A resin powder for solid freeform fabrication has a 50 percent cumulative volume particle diameter of from 5 to 100 &#x3bc;m and a ratio (Mv/Mn) of a volume average particle diameter (Mv) to the number average particle diameter (Mn) of 2.50 or less and satisfies at least one of the following conditions (1) to (3):

A powder for solid freeform fabrication includes a first resin particle and a second resin particle, wherein MFRis greater than MFRand a ratio of MFRto MFRis from 2 to 5, where MFRrepresents a melt mass-flow rate (MFR) of the first resin particle and MFRrepresents a melt mass-flow rate of the second resin particle.

Powder for solid freeform fabrication and method of manufacturing solid freeform fabrication object

A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.

Resin powder, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication object

A resin powder for solid freeform fabrication includes a particle having a pillar-like form, wherein the ratio of the height of the particle to the diameter or the long side of the bottom of the particle is 0.5 to 2.0, the particle has a 50 percent cumulative volume particle diameter of from 5 to 200 &#x3bc;m, and the ratio (Mv/Mn) of the volume average particle diameter (Mv) to the number average particle diameter (Mn) of the particle is 2.00 or less.

Resin powder having pillar shape and specific circularity for solid freeform fabrication, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication object

A particle for solid freeform fabrication having a columnar form has end surfaces and a side surface, wherein one of the end surfaces partially covers the side surface.

Particle for solid freeform fabrication, powder for solid freeform fabrication, device for manufacturing solid freeform fabrication object, method of manufacturing solid freeform fabrication object, and particle

A resin powder for solid freeform fabrication includes resin particles having a significantly pillar-like form including resin particles having a concave portion on the circumferential side surface.

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Kanagawa, Japan

Sohichiroh Iida