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公开(公告)号：US20230302817A1
公开(公告)日：2023-09-28
申请号：US18186983
申请日：2023-03-21
Applicant: SEIKO EPSON CORPORATION
Inventor： Kazuya KITADA , Yoichi TANAKA , Takayuki YOKOYAMA
CPC classification number: B41J2/2121 , B41J11/007 , B41J2/14032 , B41J2/14233 , B41J2/025 , B41J25/001 , B41J2/04541
Abstract: A droplet discharging head executes multi-path recording in which dot recording in one main scanning line is completed by n main scans when n is an integer of 2 or more. The droplet discharging head includes: a plurality of nozzles configured to discharge a liquid as droplets; a pressure chamber defining substrate defining a pressure chamber communicating with the nozzles; a piezoelectric element including a first electrode, a second electrode, and a piezoelectric layer containing a perovskite-type composite oxide containing K, Na, and Nb as a main component; and a vibration plate forming a part of a wall surface of the pressure chamber and configured to vibrate by driving of the piezoelectric element. The number of paths n in the multi-path recording, a piezoelectric constant d31 [m/v] of the piezoelectric element, and a ratio x of a Na molar fraction to a total value of a K molar fraction and the Na molar fraction in the piezoelectric layer satisfy a relationship represented by a formula (1).
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公开(公告)号：US20240375355A1
公开(公告)日：2024-11-14
申请号：US18657845
申请日：2024-05-08
Applicant: SEIKO EPSON CORPORATION
Inventor： Akihiko TSUNOYA , Takayuki YOKOYAMA
IPC: B29C64/393 , B29C64/209 , B29C64/236 , B33Y30/00 , B33Y50/02
Abstract: An information processing apparatus for generating three-dimensional shaping data includes: a generation unit configured to generate, based on shaping path information indicating a shaping path of a first slice layer among a plurality of slice layers, the three-dimensional shaping data including execution command information indicating a command to be executed at each position on the shaping path; an acquisition unit configured to acquire first line segment length information indicating a length of a first line segment among line segments included in the shaping path, second line segment length information indicating a length of a second line segment different from the first line segment among the line segments included in the shaping path, first line segment direction information indicating a direction in which the first line segment extends, and second line segment direction information indicating a direction in which the second line segment extends; and a change unit configured to change the execution command information based on the first line segment length information, the second line segment length information, the first line segment direction information, and the second line segment direction information.
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公开(公告)号：US20230302797A1
公开(公告)日：2023-09-28
申请号：US18124621
申请日：2023-03-22
Applicant: SEIKO EPSON CORPORATION
Inventor： Kazuya KITADA , Yoichi TANAKA , Takayuki YOKOYAMA
IPC: B41J2/14
CPC classification number: B41J2/14274
Abstract: A droplet discharge head includes: a nozzle configured to discharge a liquid as droplets; a pressure chamber defining substrate defining a pressure chamber communicating with the nozzle; a piezoelectric element including a first electrode, a second electrode, and a piezoelectric layer containing a perovskite-type composite oxide containing potassium (K), sodium (Na), and niobium (Nb) as a main component; and a vibration plate forming a part of a wall surface of the pressure chamber and configured to vibrate by driving of the piezoelectric element. A driving frequency f [Hz] of the piezoelectric element, a piezoelectric constant d31 [m/v] of the piezoelectric element, a ratio x of a Na molar fraction to a total value of a K molar fraction and the Na molar fraction in the piezoelectric layer, and a viscosity μ [Pa·s] of the liquid at 25° C. satisfy a relationship represented by a formula (1).
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Patent Agency Ranking
公开(公告)号：US20240383203A1
公开(公告)日：2024-11-21
申请号：US18663653
申请日：2024-05-14
Applicant: SEIKO EPSON CORPORATION
Inventor： Akihiko TSUNOYA , Takayuki YOKOYAMA
IPC: B29C64/336 , B29C64/165 , B29C64/357 , B33Y30/00
Abstract: A three-dimensional shaping apparatus includes a casing having a first connector and a second connector, a shaping stage on which a powder layer is formed, a layer forming unit that forms a powder layer, a first carriage that moves the layer forming unit, a shaping head that discharges a liquid containing a binder onto the powder layer, a liquid storage unit that stores the liquid, a supply pipe that couples the liquid storage unit and the shaping head, a second carriage that moves the shaping head, a first cable that couples the first connector and the layer forming unit, and a second cable that couples the second connector and the shaping head, wherein the supply pipe has a first turn-around portion, the first cable has a second turn-around portion, and a radius of curvature of the first turn-around portion is larger than a radius of curvature of the second turn-around portion.
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公开(公告)号：US20200307239A1
公开(公告)日：2020-10-01
申请号：US16829538
申请日：2020-03-25
Applicant: SEIKO EPSON CORPORATION
Inventor： Kinya OZAWA , Takayuki YOKOYAMA
IPC: B41J2/175
Abstract: A droplet-discharge-apparatus includes a first-head, a first-ink-container storing first-ink, a second-head, a second-ink-container storing second-ink, a cleaning-liquid-container storing cleaning-liquid, a common-flow-path-system, a cleaning-liquid-flow-path, a first-pomp feeding the first-ink from the first-ink-container to the second-ink-container through the common-flow-path-system, a second-pomp feeding the cleaning-liquid from the cleaning-liquid-container to the first-ink-container through the cleaning-liquid-flow-path and the common-flow-path-system, a first-valve controlling a liquid flow rate between the common-flow-path-system and the first-ink-container, a second-valve controlling a liquid flow rate between the common-flow-path-system and the second-ink-container, a third-valve controlling a liquid flow rate between the common-flow-path-system and the cleaning-liquid-flow-path, and a control-unit. The control-unit transfers the first-ink from the first-ink-container to the second-ink-container by controlling the first-valve, the second-valve, the third-valve, and the first-pomp, and transfers the cleaning-liquid from the cleaning-liquid-container to the first-ink-container by controlling the first-valve, the second-valve, the third-valve, and the second-pomp.
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公开(公告)号：US20240359234A1
公开(公告)日：2024-10-31
申请号：US18645540
申请日：2024-04-25
Applicant: SEIKO EPSON CORPORATION
Inventor： Akihiko TSUNOYA , Takayuki YOKOYAMA
CPC classification number: B22F10/14 , B22F3/1021 , B22F10/40 , B33Y10/00
Abstract: A method for manufacturing a three-dimensional shaped object includes: a step of stacking a layer containing a first inorganic powder and a first binder to form a first component, the first component being bonded to a second component containing a second inorganic powder and a second binder by a heat treatment; and a support body forming step of forming, by stacking the layer, a support body which is removed after the heat treatment. The heat treatment is executed on an aggregate. The support body is formed in the aggregate to support an overhang portion from below between the first component and the second component. The support body forming step includes: a step of forming a support main body portion by stacking the layer containing the first inorganic powder and the first binder; a step of forming a first contact portion in contact with the first component in the aggregate by stacking a layer containing a third inorganic powder having a melting point higher than that of the first inorganic powder and the second inorganic powder; and a step of forming a second contact portion in contact with the second component in the aggregate.
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公开(公告)号：US20200307244A1
公开(公告)日：2020-10-01
申请号：US16831156
申请日：2020-03-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Kinya OZAWA , Takayuki YOKOYAMA
Abstract: A droplet-discharge-apparatus includes a first-head, a first-ink-pack storing first-ink, a second-head, a second-ink-pack storing second-ink, a cleaning-liquid-container storing cleaning-liquid, a common-flow-path-system, a cleaning-liquid-flow-path, a first-pomp feeding the first-ink from the first-ink-pack to the second-ink-pack through the common-flow-path-system, a second-pomp feeding the cleaning-liquid from the cleaning-liquid-container to the first-ink-pack through the cleaning-liquid-flow-path and the common-flow-path-system, a first-valve controlling a liquid flow rate between the common-flow-path-system and the first-ink-pack, a second-valve controlling a liquid flow rate between the common-flow-path-system and the second-ink-pack, a third-valve controlling a liquid flow rate between the common-flow-path-system and the cleaning-liquid-flow-path, and a control-unit, wherein the common-flow-path-system, the first-valve, and the second-valve are located higher than a liquid surface in the first-ink-pack and a liquid surface in the second-ink-pack, and wherein the control-unit transfers the first-ink from the first-ink-pack to the second-ink-pack, and transfers the cleaning-liquid from the cleaning-liquid-container to the first-ink-pack.
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公开(公告)号：US20240399662A1
公开(公告)日：2024-12-05
申请号：US18676617
申请日：2024-05-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Akihiko TSUNOYA , Takayuki YOKOYAMA
IPC: B29C64/25 , B29C64/386 , B33Y10/00 , B33Y50/00
Abstract: A method of manufacturing a three-dimensional shaped object includes a shaping step of controlling a discharge unit of the three-dimensional shaping apparatus based on shaping data in a state in which a shaping door provided in a housing of the three-dimensional shaping apparatus is locked and shaping the three-dimensional shaped object in the housing and an unlock control step of, after the shaping step, controlling unlocking of the shaping door based on the shaping data, first identification information for identifying a user who transmitted the shaping data, and second identification information for identifying the three-dimensional shaping apparatus.
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