公开(公告)号：US11628617B2

公开(公告)日：2023-04-18

申请号：US17077701

申请日：2020-10-22

Applicant: RICOH COMPANY, LTD.

Inventor： Teruki Kusahara ,  Masaki Watanabe ,  Keiko Osaka ,  Mitsuru Naruse ,  Mariko Kojima ,  Yasuyuki Yamashita ,  Yoshihiro Norikane

IPC: B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B28B1/00 ,  B28B7/46 ,  C04B20/10 ,  C04B26/04 ,  B29C64/165 ,  B22F10/00 ,  B22F1/102 ,  B22F1/107 ,  B33Y70/10 ,  B22F10/16 ,  C04B111/00 ,  B29K29/00 ,  B29K105/00

Abstract: 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.

公开(公告)号：US10268131B2

公开(公告)日：2019-04-23

申请号：US15344928

申请日：2016-11-07

Applicant: RICOH COMPANY, LTD.

Inventor： Yasutada Shitara ,  Minoru Masuda ,  Shinji Aoki ,  Yoshihiro Norikane ,  Andrew Mwaniki Mulwa ,  Masaru Ohgaki ,  Kiyotada Katoh ,  Satoshi Takahashi

IPC: G03G9/13 ,  B41J2/165 ,  G03G9/12 ,  B05B15/55 ,  B05B15/555

Abstract: 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.

公开(公告)号：US09170508B2

公开(公告)日：2015-10-27

申请号：US14166253

申请日：2014-01-28

Applicant: Ricoh Company, Ltd.

Inventor： Kiyotada Katoh ,  Yasutada Shitara ,  Minoru Masuda ,  Yoshihiro Norikane ,  Kenta Kenjoh ,  Satoshi Takahashi

IPC: G03G9/00 ,  G03G9/08

CPC classification number: G03G9/0802 ,  G03G9/0819

Abstract: The particulate material production method includes vibrating a particulate material composition liquid in a liquid column resonance chamber having at least one nozzle to form a standing wave in the particulate material composition liquid caused by liquid column resonance, so that droplets of the particulate material composition liquid are ejected in a droplet ejection direction from the nozzle so as to fly in a space in a flight direction; feeding a gas in a direction substantially perpendicular to the droplet ejection direction to change the flight direction of the ejected droplets; and solidifying the droplets in the space to produce a particulate material. The particulate material composition liquid includes at least a solvent and a component of the particulate material dissolved or dispersed in the solvent, and the nozzle is located at a location corresponding to an anitnode of the standing wave.

Abstract translation: 颗粒材料生产方法包括在具有至少一个喷嘴的液柱共振室中振动颗粒材料组合物液体，以在由液柱共振引起的颗粒材料组合物液体中形成驻波，使得颗粒材料组合物液体的液滴为 从喷嘴以液滴喷射方向喷射，以便在飞行方向上的空间中飞行; 在基本上垂直于液滴喷射方向的方向上供给气体以改变喷射液滴的飞行方向; 并在该空间中固化液滴以产生颗粒材料。 颗粒材料组合物液体至少包括溶剂和溶解或分散在溶剂中的颗粒材料的组分，并且喷嘴位于对应于驻波的阳极的位置。

公开(公告)号：US09539600B2

公开(公告)日：2017-01-10

申请号：US14029954

申请日：2013-09-18

Applicant: RICOH COMPANY, LTD.

Inventor： Yasutada Shitara ,  Minoru Masuda ,  Shinji Aoki ,  Yoshihiro Norikane ,  Andrew Mwaniki Mulwa ,  Masaru Ohgaki ,  Kiyotada Katoh ,  Satoshi Takahashi

IPC: B08B9/00 ,  B05B15/02 ,  B41J2/165

CPC classification number: B05B15/0258 ,  B05B15/55 ,  B05B15/555 ,  B41J2/1652 ,  B41J2/16552 ,  G03G9/122 ,  G03G9/132

Abstract: A cleaning method for cleaning a droplet ejector, which includes nozzles to eject a particulate material composition liquid, and a nozzle plate bearing the nozzles is provided. The cleaning method includes forming a substantially closed cleaning space outside the nozzles and the nozzle plate; supplying a cleaning liquid to the cleaning space so that the nozzles and the nozzle plate are contacted with the cleaning liquid; and vibrating the cleaning liquid when the nozzles and the nozzle plate are contacted with the cleaning liquid to clean the nozzles and the nozzle plate.

Abstract translation: 提供一种用于清洁包括喷射颗粒材料组合物液体的喷嘴的液滴喷射器和支撑喷嘴的喷嘴板的清洁方法。 清洁方法包括在喷嘴和喷嘴板外部形成基本封闭的清洁空间; 向清洁空间供应清洁液体，使得喷嘴和喷嘴板与清洗液接触; 并且当所述喷嘴和所述喷嘴板与所述清洁液体接触以清洁所述喷嘴和所述喷嘴板时，使所述清洗液体振动。

公开(公告)号：US11078374B2

公开(公告)日：2021-08-03

申请号：US16308709

申请日：2017-06-05

Applicant: RICOH COMPANY, LTD.

Inventor： Hiroyuki Naito ,  Hiroshi Iwata ,  Yoshihiro Norikane ,  Yoshihito Shimada ,  Kenji Sugiura

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C09D11/101 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/112 ,  C09D11/30 ,  C08L71/02 ,  B29C64/124 ,  C09D11/033 ,  C09D11/107 ,  C09D11/36

Abstract: 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, a cured product obtained by irradiating the active-energy-ray-curable liquid composition with 500 mJ/cm2 of 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.

公开(公告)号：US10226918B2

公开(公告)日：2019-03-12

申请号：US14816370

申请日：2015-08-03

Applicant: Ricoh Company,Ltd.

Inventor： Yoshihiro Norikane ,  Yasutada Shitara ,  Teruki Kusahara ,  Takuya Saito ,  Takeo Yamaguchi

IPC: C09D129/04 ,  C09D133/02 ,  C09D171/02 ,  C09D101/28 ,  C09D189/00 ,  C09D103/02 ,  B29C67/00 ,  B33Y80/00 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165 ,  C08K3/10 ,  C08K3/36 ,  C08K3/20 ,  C08K3/34 ,  C08K3/22 ,  C08K3/38

Abstract: 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.

公开(公告)号：US10828827B2

公开(公告)日：2020-11-10

申请号：US15022054

申请日：2014-09-29

Applicant: RICOH COMPANY, LTD.

Inventor： Teruki Kusahara ,  Masaki Watanabe ,  Keiko Osaka ,  Mitsuru Naruse ,  Mariko Kojima ,  Yasuyuki Yamashita ,  Yoshihiro Norikane

IPC: B29C64/153 ,  B29C64/165 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00 ,  B28B1/00 ,  B28B7/46 ,  B22F1/00 ,  C04B20/10 ,  B22F3/00 ,  C04B26/04 ,  B22F3/105 ,  C04B111/00 ,  B29K29/00 ,  B29K105/00

Abstract: 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.

公开(公告)号：US11904058B2

公开(公告)日：2024-02-20

申请号：US16557570

申请日：2019-08-30

Applicant: RICOH COMPANY, LTD.

Inventor： Hiroshi Iwata ,  Tatsuya Niimi ,  Yoshihiro Norikane ,  Takashi Matsumura

IPC: A61L15/60 ,  B33Y70/00 ,  C08K5/05 ,  B29C64/112 ,  C08K5/053 ,  B33Y80/00 ,  G09B23/30 ,  B33Y10/00 ,  B29L31/00 ,  B29C64/40

CPC classification number: A61L15/60 ,  B29C64/112 ,  B33Y70/00 ,  B33Y80/00 ,  C08K5/05 ,  C08K5/053 ,  G09B23/30 ,  B29C64/40 ,  B29L2031/7532 ,  B33Y10/00 ,  C08K5/053 ,  C08L33/26 ,  C08K5/05 ,  C08L33/26 ,  C08K3/346 ,  C08L33/26

Abstract: 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.