Ricoh Company, Ltd.

Yoshihiro Norikane

Yasutada Shitara

Yohichiroh Watanabe

Hiroshi Iwata

Shinji Ohtani

Masaru Ohgaki

Andrew Mwaniki Mulwa

Satoshi Takahashi

Minoru Masuda

Takahiro Honda

Kiyotada Katoh

Shinji Aoki

Kazumi Suzuki

Tatsuya Niimi

Takashi Matsumura

Hiroyuki Naito

Yuko Sekiguchi

Mariko Kojima

Keiko Osaka

Mitsuru Naruse

Teruki Kusahara

Masaki Watanabe

Keisuke Uchida

Yasuyuki Yamashita

Takuya Saito

Manabu Seo

Haruo Nakamura

Yasufumi Yamada

Ichiroh Fujii

Keiji Makabe

Tetsuya Sonoda

Kenji Sugiura

Nozomu Tamoto

Tsuyoshi Sugimoto

Yasuaki Iwamoto

Ryota Inoue

Shinichi Kuramoto

Kenta Kenjoh

Masahiro Masuzawa

Takeo Yamaguchi

Hideyuki Miyazawa

Yukio Tabata

Shinji Tezuka

Seichin Kinuta

Noriaki Okada

Watanabe Yohichiroh

Yoshihito Shimada

A hydrogel object includes a polymer and water, wherein the rate of mass loss is not greater than 20 percent by mass when the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent.

Hydrogel object and method of manufacturing hydrogel object

Provided is a three-dimensional object formation method for forming a three-dimensional object by at least repeating: forming a powder material layer using a powder material for three-dimensional object formation containing a base material coated with an organic material; and hardening a predetermined region of the powder material layer by delivering a hardening liquid to the powder material layer formed in the formation of a powder material layer, where the hardening liquid contains a cross-linking agent cross-linkable with the organic material.

Formation method of three-dimensional object with metal and/or ceramic particles and thin organic resin

Provided is an active-energy-ray-curable liquid composition containing a monomer (A) having a hydrogen-bonding capacity and a solvent (B) having a hydrogen-bonding capacity, wherein the active-energy-ray-curable liquid composition satisfies conditions below, &#x3c;Conditions&#x3e; a cured product obtained by irradiating the active-energy-ray-curable liquid composition with 500 mJ/cmof an active energy ray is a solid having a compressive stress of 2.0 kPa or greater when compressed by 1% at 25 degrees C., and the cured product has a water decaying property.

Active-energy-ray-curable liquid composition, three-dimensional object forming material set, method for producing three-dimensional object, and three-dimensional object producing apparatus

A hydrogel structure includes a hollow tubular structure having an inner diameter of 1.0 mm or less, wherein the hydrogel structure has a transmission of 80 percent or more in a visible light range.

Hydrogel structure, blood vessel, internal organ model, practice tool for medical procedure, and method of manufacturing the hydrogel structure

A method of manufacturing a three-dimensional object includes imparting a first liquid having a first composition including a solvent and a curable material and a second liquid having a second composition to form a liquid film, curing the liquid film, and repeating the imparting and the curing to obtain the three-dimensional object, wherein the imparting position and the imparting amount of each of the first liquid and the second liquid are controlled in such a manner that the liquid film includes multiple areas where at least one of post-curing compression stress and post-curing modulus of elasticity is different.

Method of manufacturing three-dimensional object, liquid set for manufacturing three-dimensional object, device for manufacturing three-dimensional object, and gel object

A solid freeform fabrication object includes a hydrogel including a polymer, water, and a coloring material inclusion substance.

Solid freeform fabrication object, internal organ model, and method of manufacturing the same

Powder material for three-dimensional object formation, hardening liquid and three-dimensional object formation kit, and formation method and formation apparatus of three-dimensional object

A hydrogel liquid precursor includes an inorganic mineral and a monomer, wherein the inorganic mineral accounts for 15 percent by mass or more of the hydrogel liquid precursor, wherein the hydrogel liquid precursor has an initial viscosity of 20 mPa&#xb7;s or less at 25 degrees C., and wherein the hydrogel liquid precursor has a ratio of a two-week viscosity to the initial viscosity of from 0.90 to 1.10, the two-week viscosity representing a viscosity of the hydrogel liquid precursor at 25 degrees C. after being left at 50 degrees C. for two weeks.

Hydrogel liquid precursor, liquid set for three-dimensional modeling, hydrogel modeling object, and method of manufacturing three-dimensional object

Provided is a bolus formed of a hydrogel, wherein the hydrogel includes water, a polymer, and a mineral, and wherein the bolus is applied to a patient who receives a radiation therapy.

Bolus and method for producing same

An active energy ray liquid composition is provided. A cured product of the active energy ray curable liquid composition is a solid at 25&#xb0; C. and a liquid at 60&#xb0; C., and the solid exhibits a compression stress of 2.0 kPa or more when compressed 1%.

Active energy ray curable liquid composition, method for manufacturing three-dimensional objects, and apparatus for manufacturing three-dimensional objects

Provided is a three-dimensional object producing method, including: a first step of forming a film by delivering a first liquid as a hydrogel precursor including at least a multifunctional monomer; and a second step of curing the film formed in the first step, wherein the first step and the second step are repeated a plurality of times.

Three-dimensional object forming liquid, three-dimensional object forming liquid set, three-dimensional object producing method, and three-dimensional object

Provided is a liquid material for forming a three-dimensional object. The liquid material is adapted to harden a powder material for forming a three-dimensional object containing an organic material. The liquid material contains a solvent and a cross-linking agent. A dynamic contact angle of the liquid material over a film made of the organic material is from 20&#xb0; to 80&#xb0;.

Liquid material for forming three-dimensional object and material set for forming three-dimensional object, and three-dimensional object producing method

A cleaner, such as provided in a particulate material production apparatus, for cleaning a droplet ejector, which includes nozzles to eject a particulate material composition liquid as droplets, and a nozzle plate bearing the nozzles. A substantially closed cleaning space is formed outside the nozzles and the nozzle plate, and a first cleaning liquid supplying device supplies a first cleaning liquid to the cleaning space so that the nozzles and the nozzle plate are contacted with the first cleaning liquid. In addition, a vibrator vibrates the first cleaning liquid when the nozzles and the nozzle plate are contacted with the first cleaning liquid to clean the nozzles and the nozzle plate.

Cleaner for cleaning droplet ejector, and particulate material production apparatus using the cleaner

Provided is a three-dimensional object formation powder material used for three-dimensional object formation of forming a three-dimensional object by stacking up a plurality of powder material layers each bound by a resin and having a predetermined shape. The three-dimensional object formation powder material contains particles in which a plurality of cores are fixed by a water-soluble resin.

Three-dimensional object formation powder material, three-dimensional object formation material set, and three-dimensional object production method

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Kanagawa, Japan

Yoshihiro Norikane