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1. 发明授权

US11628617B2 Formation method of three-dimensional object with metal and/or ceramic particles and thin organic resin 有权
公开(公告)号：US11628617B2
公开(公告)日：2023-04-18
申请号：US17077701
申请日：2020-10-22
申请人： RICOH COMPANY, LTD.
发明人： Teruki Kusahara , Masaki Watanabe , Keiko Osaka , Mitsuru Naruse , Mariko Kojima , Yasuyuki Yamashita , Yoshihiro Norikane
IPC分类号： 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
摘要： 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.

2. 发明授权

US10268131B2 Cleaner for cleaning droplet ejector, and particulate material production apparatus using the cleaner 有权
公开(公告)号：US10268131B2
公开(公告)日：2019-04-23
申请号：US15344928
申请日：2016-11-07
申请人： RICOH COMPANY, LTD.
发明人： Yasutada Shitara , Minoru Masuda , Shinji Aoki , Yoshihiro Norikane , Andrew Mwaniki Mulwa , Masaru Ohgaki , Kiyotada Katoh , Satoshi Takahashi
IPC分类号： G03G9/13 , B41J2/165 , G03G9/12 , B05B15/55 , B05B15/555
摘要： 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.

3. 发明授权

US09170508B2 Particulate material production method and apparatus, toner production method and apparatus, and toner 有权
标题翻译：颗粒材料生产方法和装置，调色剂生产方法和装置以及调色剂
公开(公告)号：US09170508B2
公开(公告)日：2015-10-27
申请号：US14166253
申请日：2014-01-28
申请人： Ricoh Company, Ltd.
发明人： Kiyotada Katoh , Yasutada Shitara , Minoru Masuda , Yoshihiro Norikane , Kenta Kenjoh , Satoshi Takahashi
IPC分类号： G03G9/00 , G03G9/08
CPC分类号： G03G9/0802 , G03G9/0819
摘要： 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.
摘要翻译：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。

4. 发明授权

US09539600B2 Method for cleaning droplet ejector, cleaner for cleaning droplet ejector, and particulate material production apparatus using the cleaner 有权
标题翻译：清洁液滴喷射器，清洁液滴喷射器的清洁剂和使用清洁剂的颗粒材料生产设备的方法
公开(公告)号：US09539600B2
公开(公告)日：2017-01-10
申请号：US14029954
申请日：2013-09-18
申请人： RICOH COMPANY, LTD.
发明人： Yasutada Shitara , Minoru Masuda , Shinji Aoki , Yoshihiro Norikane , Andrew Mwaniki Mulwa , Masaru Ohgaki , Kiyotada Katoh , Satoshi Takahashi
IPC分类号： B08B9/00 , B05B15/02 , B41J2/165
CPC分类号： B05B15/0258 , B05B15/55 , B05B15/555 , B41J2/1652 , B41J2/16552 , G03G9/122 , G03G9/132
摘要： 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.
摘要翻译：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。

5. 发明授权

US11078374B2 Active-energy-ray-curable liquid composition, three-dimensional object forming material set, method for producing three-dimensional object, and three-dimensional object producing apparatus 有权
公开(公告)号：US11078374B2
公开(公告)日：2021-08-03
申请号：US16308709
申请日：2017-06-05
申请人： RICOH COMPANY, LTD.
发明人： Hiroyuki Naito , Hiroshi Iwata , Yoshihiro Norikane , Yoshihito Shimada , Kenji Sugiura
IPC分类号： 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
摘要： 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.

6. 发明授权

US10226918B2 Three-dimensional object formation powder material, three-dimensional object formation material set, and three-dimensional object production method 有权
公开(公告)号：US10226918B2
公开(公告)日：2019-03-12
申请号：US14816370
申请日：2015-08-03
申请人： Ricoh Company,Ltd.
发明人： Yoshihiro Norikane , Yasutada Shitara , Teruki Kusahara , Takuya Saito , Takeo Yamaguchi
IPC分类号： 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
摘要： 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.

7. 发明授权

US10828827B2 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 有权
公开(公告)号：US10828827B2
公开(公告)日：2020-11-10
申请号：US15022054
申请日：2014-09-29
申请人： RICOH COMPANY, LTD.
发明人： Teruki Kusahara , Masaki Watanabe , Keiko Osaka , Mitsuru Naruse , Mariko Kojima , Yasuyuki Yamashita , Yoshihiro Norikane
IPC分类号： 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
摘要： 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.

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