公开(公告)号：US20220267527A1

公开(公告)日：2022-08-25

申请号：US17403011

申请日：2021-08-16

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Kosuke NAKADA ,  Shigeru SEITOKU ,  Takeshi IWANAGA ,  Tomoyo OKUBO ,  Hajime SUGAHARA ,  Hidekazu HIROSE

IPC: C08G73/10 ,  C08J5/18 ,  C08J9/26

Abstract: A polyimide precursor solution contains: an aqueous solvent containing water; particles; and a polyimide precursor, wherein the polyimide precursor has a high molecular weight region A containing a high molecular weight side maximum value and a low molecular weight region B containing a low molecular weight side maximum value in an elution curve obtained by gel permeation chromatography, a weight average molecular weight in the high molecular weight region A is 50,000 or more, a weight average molecular weight in the low molecular weight region B is 10,000 or more and 30,000 or less, and a value of a/(a+b) is 0.60 or more and 0.98 or less in which a represents an area of the high molecular weight region A and b represents an area of the low molecular weight region B.

公开(公告)号：US20230103101A1

公开(公告)日：2023-03-30

申请号：US17862855

申请日：2022-07-12

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Takeshi IWANAGA ,  Takako KOBAYASHI ,  Mieko SEKI ,  Kiyohiro YAMANAKA ,  Satoshi KAMIWAKI

IPC: G03G9/087 ,  G03G9/08 ,  G03G15/00

Abstract: A pressure sensitive toner includes toner particles containing a composite resin that includes a styrene-based resin and a (meth)acrylate-based resin. The difference between a lowest glass transition temperature of the composite resin and a highest glass transition temperature thereof is 30° C. or more, and the toner particles have a gel fraction of from 1.0% by mass to 8.0% by mass inclusive.

公开(公告)号：US20230080755A1

公开(公告)日：2023-03-16

申请号：US17591983

申请日：2022-02-03

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Shigeru SEITOKU ,  Kosuke NAKADA ,  Takeshi IWANAGA ,  Hidekazu HIROSE

IPC: C08L79/08

Abstract: A polyimide precursor solution includes: a polyimide precursor; polyester resin particles containing a polyester resin and having a volume average particle diameter of from 3 μm to 50 μm inclusive and an average circularity of 0.970 or more; and a solvent.

公开(公告)号：US20230077397A1

公开(公告)日：2023-03-16

申请号：US17702776

申请日：2022-03-23

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Takeshi IWANAGA ,  Shigeru SEITOKU ,  Kosuke NAKADA ,  Hidekazu HIROSE

IPC: C08G73/12 ,  C08G73/10

Abstract: A polyimide precursor solution includes an aqueous solvent including water, a polyimide precursor, resin particles, and an ionization agent X having a boiling point of 100° C. or more and 130° C. or less and an ionization agent Y having a boiling point of 250° C. or more and 300° C. or less.

公开(公告)号：US20230076583A1

公开(公告)日：2023-03-09

申请号：US17592084

申请日：2022-02-03

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Kosuke NAKADA ,  Shigeru SEITOKU ,  Takeshi IWANAGA ,  Hidekazu HIROSE

IPC: C08G73/10 ,  C09D179/08

Abstract: A polyimide precursor solution includes: a polyimide precursor that is a polymer of a tetracarboxylic dianhydride and a diamine compound; particles; a solvent; and a compound having at least four carboxy groups per molecule.

公开(公告)号：US20220306806A1

公开(公告)日：2022-09-29

申请号：US17392608

申请日：2021-08-03

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Tomoyo OKUBO ,  Takeshi IWANAGA ,  Hidekazu HIROSE ,  Kosuke NAKADA ,  Hajime SUGAHARA ,  Shigeru SEITOKU

IPC: C08G73/10 ,  C08J5/18 ,  C08J9/26

Abstract: A polyimide precursor film contains a polyimide precursor, in which a total content of a solvent containing water and a solvent other than water in the polyimide precursor film is 5 mass % or more and 40 mass % or less, and a mass ratio of water to the solvent other than water in the polyimide precursor film is 0 or more and 2.5 or less.

公开(公告)号：US20220227906A1

公开(公告)日：2022-07-21

申请号：US17547164

申请日：2021-12-09

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Yoshifumi IIDA ,  Takako KOBAYASHI ,  Takashi HASEGAWA ,  Kiyohiro YAMANAKA ,  Takeshi IWANAGA ,  Satoshi KAMIWAKI ,  Mieko SEKI ,  Sumiaki YAMASAKI

IPC: C08F212/08 ,  C08K3/36 ,  C09D11/107 ,  C09D125/14

Abstract: Pressure-responsive particles include pressure-responsive base particles and silica particles, in which the pressure-responsive base particles contain a styrene-based resin that contains styrene and other vinyl monomers as polymerization components and a (meth)acrylic acid ester-based resin that contains at least two kinds of (meth)acrylic acid esters as polymerization components and in which a ratio of a mass of the (meth)acrylic acid esters to a total mass of polymerization components is 90% by mass or more, the pressure-responsive particles have at least two glass transition temperatures, a difference between a lowest glass transition temperature and a highest glass transition temperature is 30° C. or higher, and a ratio of a surface coating rate Cs2 by the silica particles after application of the following first stress to a surface coating rate Cs1 by the silica particles before application of stress satisfies a relationship of 0.4≤Cs2/Cs1≤0.8, first stress: 10 g of the pressure-responsive particles and 90 g of resin-coated ferrite particles are put in a V-shaped mixer with a rotary container having a volume of 0.5 L and rotated at a rotation speed of 40 rpm for 20 minutes at a temperature of 20° C. and a relative humidity of 50%.