公开(公告)号：US20210164167A1

公开(公告)日：2021-06-03

申请号：US17104092

申请日：2020-11-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuya AOYAMA ,  Shigemi WAKABAYASHI ,  Shinobu YOKOKAWA ,  Yoko NAKAI ,  Masahiko NAKAZAWA

IPC: D21H23/20 ,  D21C5/02 ,  D21H11/14 ,  D21H17/57 ,  D21H17/53

Abstract: A fiber assembly-forming method includes providing a first feedstock containing fibers with a binding material bonding the fibers to each other, forming disintegrated matter by disintegrating the first feedstock provided with the binding material, depositing the disintegrated matter, and heating the deposited disintegrated matter.

公开(公告)号：US20200165781A1

公开(公告)日：2020-05-28

申请号：US16695680

申请日：2019-11-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuya AOYAMA ,  Shinichi KATO ,  Shigemi WAKABAYASHI

IPC: D21H23/24 ,  B41M5/00 ,  D21H23/30 ,  D21H23/50 ,  D21H19/12 ,  D21H17/06 ,  D21H21/14

Abstract: A fiber body forming method includes a step of applying a liquid to a web containing fibers, the liquid contains resin particles which bind the fibers, and the liquid has a surface tension of 50 mN/m or less at 20° C.

公开(公告)号：US20180001629A1

公开(公告)日：2018-01-04

申请号：US15467270

申请日：2017-03-23

Applicant: Seiko Epson Corporation

Inventor： Shigemi WAKABAYASHI

IPC: B41J2/14 ,  B41J11/00 ,  B41J2/21 ,  B41J2/36 ,  B41J2/01

CPC classification number: B41J2/1433 ,  B41J2/01 ,  B41J2/1404 ,  B41J2/2103 ,  B41J2/2128 ,  B41J2/2132 ,  B41J2/36 ,  B41J11/008

Abstract: A liquid ejecting method includes ejecting droplets of an oil-based ink containing an oil-based medium onto a recording medium by using an ink jet head having a plurality of nozzles under the conditions satisfying relationships (1): f×D≧4800; and relationship (2): 5≦ρVd/η≦30. In the relationships (1) and (2), D represents the nozzle pitch in dpi of the ink jet head, f represents the maximum ejection frequency in kHz, V represents the velocity in m/s of droplets ejected from the ink jet head, d represents the diameter in μm of the droplets of the oil-based ink, ρ represents the density in g/cm3 of the oil-based ink, and η represents the viscosity in mPa·s of the oil-based ink.

公开(公告)号：US20240001641A1

公开(公告)日：2024-01-04

申请号：US18341794

申请日：2023-06-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Shigemi WAKABAYASHI ,  Masahiko NAKAZAWA ,  Yasuo MIYAMOTO ,  Takumi SAGO ,  Takashi SHINOHARA

IPC: B31F1/00

CPC classification number: B31F1/0077

Abstract: A method for manufacturing a molded body, includes a deposition step of depositing a mixture containing fibers and a starch in air; a moisturizing step of applying water to the mixture; and a molding step of forming a molded body by heating and pressurizing the mixture to which the water is applied, and the starch has a value of 2,000 to 10,000, the value being represented by the following expression (I) and being obtained by measurement performed in accordance with the following measurement methods (1) to (4) using a rapid visco analyzer (RVA).


5,000−30×T1−90×(T2−T1)+2×η1−15×η2  (I)

In the expression (I), T1 represents a gelatinization start temperature (° C.), T2 represents a gelatinization peak temperature (° C.), η1 represents a gelatinization peak viscosity (mPa·s), and η2 represents a trough viscosity (mPa·s), and the measurement is performed such that (1) after a water suspension containing the starch at 25 percent by mass is charged in the RVA as a measurement sample, the temperature thereof is increased to 50° C. and then maintained for one minute; (2) the temperature of the measurement sample is increased from 50° C. to 93° C. over 4 minutes and then maintained at 93° C. for 7 minutes; (3) the temperature of the measurement sample is decreased from 93° C. to 50° C. over 4 minutes and then maintained at 50° C. for 3 minutes; and (4) in the above (2) and (3), a rotational speed of a measurement paddle of the RVA is set to 960 rpm for 10 seconds after the start of the viscosity measurement and is then set to 160 rpm 10 seconds thereafter.

公开(公告)号：US20220288869A1

公开(公告)日：2022-09-15

申请号：US17690171

申请日：2022-03-09

Applicant: SEIKO EPSON CORPORATION

Inventor： Shigemi WAKABAYASHI ,  Masahiko NAKAZAWA ,  Takashi HIRAIWA

IPC: B29C70/02

Abstract: The method for manufacturing a molded product of the present disclosure includes a deposition step of depositing a mixture including a fiber and a complex, a humidification step of humidifying the mixture, and a molding step of heating and pressurizing the humidified mixture to obtain a molded product. The complex includes a composite particle in which a binding material particle containing a binding material that exerts a binding force for binding the individual fibers together by being applied with moisture and an inorganic particle are included as a unit.

公开(公告)号：US20210301469A1

公开(公告)日：2021-09-30

申请号：US17215161

申请日：2021-03-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Shigemi WAKABAYASHI ,  Masahiko NAKAZAWA ,  Hiroki KURATA ,  Naotaka HIGUCHI ,  Yoshihiro UENO ,  Shunichi SEKI ,  Nobutaka URANO ,  Takehiko UEHARA

IPC: D21H11/14 ,  D21B1/06 ,  D21H17/53

Abstract: A fiber-formed body producing raw material contains fibers and a binder for binding the fibers, wherein the fiber-formed body producing raw material is nongranular, and 1.0≤A/B≤9.0, wherein A is a weight of the fibers in the fiber-formed body producing raw material and B is a weight of the binder in the fiber-formed body producing raw material.

公开(公告)号：US20200173102A1

公开(公告)日：2020-06-04

申请号：US16700071

申请日：2019-12-02

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuya AOYAMA ,  Shinichi KATO ,  Shigemi WAKABAYASHI ,  Yoshihiro UENO ,  Shunichi SEKI ,  Takumi SAGO ,  Hiroki KURATA

IPC: D21B1/32

Abstract: A method for defibrating a fiber body includes: a supply step of supplying a liquid to a fiber body containing fibers; and a defibrating step of defibrating the fiber body to which the liquid is supplied, and in the supply step, the liquid is supplied to the fiber body so that a rate in tensile strength of the fiber body immediately before defibrated in the defibrating step to the fiber body before the liquid is supplied thereto is 60.0% or less.

公开(公告)号：US20180215936A1

公开(公告)日：2018-08-02

申请号：US15864154

申请日：2018-01-08

Applicant: Seiko Epson Corporation

Inventor： Shigemi WAKABAYASHI

IPC: C09D11/36 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322

CPC classification number: C09D11/36 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/38

Abstract: An oily ink composition for ink jet recording according contains an oily medium and a colorant. The oily medium contains an allyl ether represented by the following formula: where R1 and R2 independently represent a hydrogen atom or a methyl group, R3 represents a hydrogen atom or an allyl group, k represents an integer of 1 to 4, and m and n each represent an integer satisfying the inequality m+n≤3.

公开(公告)号：US20170121546A1

公开(公告)日：2017-05-04

申请号：US15338788

申请日：2016-10-31

Applicant: Seiko Epson Corporation

Inventor： Shigemi WAKABAYASHI

IPC: C09D11/36 ,  C09D11/322 ,  C09D11/107 ,  C09D11/328

CPC classification number: C09D11/36 ,  C09D11/322 ,  C09D11/328 ,  C09D11/38

Abstract: An oil-based recording liquid according to the invention includes a color material and an oil-based medium, the oil-based medium contains a first organic medium having an SP value of 9.5 or more and an iodine value of 120 or more, and the content of the first organic medium is 50 percent by mass or more, or the oil-based medium contains an allyl compound.

公开(公告)号：US20240003090A1

公开(公告)日：2024-01-04

申请号：US18341797

申请日：2023-06-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Shigemi WAKABAYASHI ,  Masahiko NAKAZAWA ,  Takumi SAGO ,  Takashi SHINOHARA

IPC: D21H23/08 ,  D21H17/28 ,  D21F5/02 ,  B31D5/02

CPC classification number: D21H23/08 ,  D21H17/28 ,  D21F5/022 ,  B31D5/02

Abstract: A method for manufacturing a molded body, includes a deposition step of depositing a mixture containing fibers and a starch in air; a moisturizing step of applying water to the mixture; and a molding step of forming a molded body by heating and pressurizing the mixture to which the water is applied. In the method described above, the starch has a setback viscosity (η50-η93) of 40 to 200 mPa·s, the setback viscosity (η50-η93) being obtained by measurement performed in accordance with the following measurement methods (1) to (4) using a rapid visco analyzer (RVA). The measurement is performed such that (1) after a water suspension containing the starch at 25 percent by mass is charged in the RVA as a measurement sample, the temperature thereof is increased to 50° C. and then maintained for one minute; (2) the temperature of the measurement sample is increased from 50° C. to 93° C. over 4 minutes and then maintained at 93° C. for 7 minutes; (3) the temperature of the measurement sample is decreased from 93° C. to 50° C. over 4 minutes and then maintained at 50° C. for 3 minutes; and (4) in the above (2) and (3), a rotational speed of a measurement paddle of the RVA is set to 960 rpm for 10 seconds after the start of the viscosity measurement and is then set to 160 rpm 10 seconds thereafter.