Ricoh Company, Ltd.

Kiichi Kamoda

Takashi Fujita

Akira Saito

Hitoshi Iwatsuki

Yasuyuki Yamashita

Nozomu Tamoto

Yasuo Suzuki

Kazuhiko Watanabe

Shinzo Higuchi

Sohichiroh Iida

Shigenori Yaguchi

Mitsuru Naruse

Toshiyuki Mutoh

Toshiyuki Iseki

Yasutada Shitara

Hiroki Hagiwara

Yasutomo Aman

Shinnosuke Koshizuka

Shinsuke Nagai

Kazufumi Kimura

Yuuya Endoh

Yuuki Kamon

Yoshihiko Furugohri

Sohichiroh Lida

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.

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 contains columnar particles, wherein the proportion of the columnar particles having a ratio (L/W) of less than 1 is 50 percent by volume or more in the total volume of the resin powder, where W represents the width in the radial direction of the columnar particles and L represents the length in the axis direction of the columnar particles.

Resin powder and method of manufacturing solid freeform fabrication object

Provided are resin particles including columnar resin particles each including filaments of a fibrous material, wherein the filaments of the fibrous material are aligned in an axial direction of each of the columnar resin particles.

Resin particles, production method thereof, and application thereof for production of three-dimensional 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.

Resin powder for solid freeform fabrication and device for solid freeform fabrication object

A fabrication method includes laminating a fabrication material to form an object, and applying a release material on a surface of the object to form a release layer on the surface of the object. A surface free energy of the release material is equal to or smaller than 25 mN/m.

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Kanagawa, Japan

Kiichi Kamoda