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公开(公告)号：EP3628709A2
公开(公告)日：2020-04-01
申请号：EP19197191.0
申请日：2019-09-13
申请人： Ricoh Company, Ltd.
发明人： HAGIWARA, Hiroki , NAKAGAWA, Tomohiro , KAJI, Yuki
IPC分类号： C09D11/38
摘要： An ink is provided. The ink comprises a colorant, water, an organic solvent comprising a glycol ether having a solubility parameter of from 9.0 to 12.0 (cal/cm 3 ) 1/2 , and a surfactant comprising a silicone-based surfactant (a) and a nonionic surfactant (b).
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公开(公告)号：EP4301821A1
公开(公告)日：2024-01-10
申请号：EP22707880.5
申请日：2022-02-24
申请人： Ricoh Company, Ltd.
发明人： TAMURA, Risa , YAMAMOTO, Sei , NAKAGAWA, Tomohiro , UMEMURA, Kazuhiko , HAGIWARA, Hiroki , HIROKAWA, Yuya , SAIGA, Takuya
IPC分类号： C09D11/54 , C09D11/40 , C09D11/322 , C09D11/38
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公开(公告)号：EP4183556A1
公开(公告)日：2023-05-24
申请号：EP22207528.5
申请日：2022-11-15
申请人： Ricoh Company, Ltd.
发明人： KAMODA, Kiichi , HAGIWARA, Hiroki
IPC分类号： B29C64/165 , B33Y70/00 , B33Y70/10 , B28B1/00 , B22F10/14
摘要： A three-dimensional shaped object producing method is provided that includes: forming a layer from secondary particles (51) including a binder resin and primary particles containing at least a ceramic material; and applying a liquid that dissolves the binder resin on the formed layer. The liquid contains a solvent having a boiling point of 100°C or higher and 210°C or lower, a relative energy difference (RED) between the binder resin and the solvent is 1.0 or less, and the secondary particles (51) have a loose bulk density of 25% or higher and 55% or lower.
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公开(公告)号：EP3981605A3
公开(公告)日：2022-05-04
申请号：EP21187311.2
申请日：2021-07-22
申请人： Ricoh Company, Ltd.
发明人： YAMAMOTO, Sei , NAKAGAWA, Tomohiro , UMEMURA, Kazuhiko , KOYANO, Masayuki , HIROKAWA, Yuya , SAIGA, Takuya , HAGIWARA, Hiroki
摘要： A printing method includes: a processing fluid applying step of applying a processing fluid containing silica and a multivalent metal salt to a print medium (1); and an ink applying step of applying an ink containing a coloring material and water to the print medium (1). The print medium (1) has a Cobb water absorption of 20 g/m 2 or greater but 75 g/m 2 or less when contacted with water for 120 seconds. The Cobb water absorption is stipulated by JIS-P8140.
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5.发明公开
公开(公告)号：EP4157953A1
公开(公告)日：2023-04-05
申请号：EP21722570.5
申请日：2021-04-27
申请人： Ricoh Company, Ltd.
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公开(公告)号：EP3981605A2
公开(公告)日：2022-04-13
申请号：EP21187311.2
申请日：2021-07-22
申请人： Ricoh Company, Ltd.
发明人： YAMAMOTO, Sei , NAKAGAWA, Tomohiro , UMEMURA, Kazuhiko , KOYANO, Masayuki , HIROKAWA, Yuya , SAIGA, Takuya , HAGIWARA, Hiroki
摘要： A printing method includes: a processing fluid applying step of applying a processing fluid containing silica and a multivalent metal salt to a print medium (1); and an ink applying step of applying an ink containing a coloring material and water to the print medium (1). The print medium (1) has a Cobb water absorption of 20 g/m 2 or greater but 75 g/m 2 or less when contacted with water for 120 seconds. The Cobb water absorption is stipulated by JIS-P8140.
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7.发明公开
公开(公告)号：EP3495154A1
公开(公告)日：2019-06-12
申请号：EP18209755.0
申请日：2018-12-03
申请人： Ricoh Company, Ltd.
摘要： An image forming method includes applying a pre-processing fluid to a non-permeable recording medium, jetting an ink to the non-permeable recording medium, and accelerating drying the pre-processing fluid applied to and the ink jetted to the non-permeable recording medium, wherein the pre-processing fluid comprises a multivalent metal salt and a resin particle.
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公开(公告)号：EP4214061A1
公开(公告)日：2023-07-26
申请号：EP21762129.1
申请日：2021-08-20
申请人： Ricoh Company, Ltd.
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公开(公告)号：EP3587517B1
公开(公告)日：2020-11-11
申请号：EP19181029.0
申请日：2019-06-18
申请人： Ricoh Company, Ltd.
发明人： KAJI, Yuki , NAKAGAWA, Tomohiro , HAGIWARA, Hiroki
IPC分类号： C09D11/322 , C09D11/54 , C09D11/38 , C09D11/40 , B41J2/00
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公开(公告)号：EP3628709A3
公开(公告)日：2020-04-08
申请号：EP19197191.0
申请日：2019-09-13
申请人： Ricoh Company, Ltd.
发明人： HAGIWARA, Hiroki , NAKAGAWA, Tomohiro , KAJI, Yuki
IPC分类号： C09D11/38
摘要： An ink is provided. The ink comprises a colorant, water, an organic solvent comprising a glycol ether having a solubility parameter of from 9.0 to 12.0 (cal/cm 3 ) 1/2 , and a surfactant comprising a silicone-based surfactant (a) and a nonionic surfactant (b).
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