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：US20220229377A1

公开(公告)日：2022-07-21

申请号：US17500917

申请日：2021-10-13

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Takako KOBAYASHI ,  Yoshifumi IIDA ,  Takashi HASEGAWA

IPC: G03G9/097 ,  G03G9/08 ,  G03G15/00 ,  G03G15/08

Abstract: Pressure-responsive particles include pressure-responsive base particles and resin 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, a ratio of a mass of the (meth)acrylic acid esters to a total mass of polymerization components is 90% by mass or more in the (meth)acrylic acid ester-based resin, 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 mass of the resin particles to a total mass of the pressure-responsive particles is 0.05% by mass or more and 2.0% by mass 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%.

公开(公告)号：US20220064425A1

公开(公告)日：2022-03-03

申请号：US17161702

申请日：2021-01-29

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Satomi KASHIWAGI ,  Satoshi INOUE ,  Sumiaki YAMASAKI ,  Yoshifumi IIDA ,  Takako KOBAYASHI ,  Takashi HASEGAWA

IPC: C08L25/14 ,  C08K3/22 ,  C08K3/36 ,  B41J13/00 ,  B41M5/52

Abstract: Pressure-responsive particles include pressure-responsive base particles and inorganic oxide particles, in which the pressure-responsive base particles contain a styrene-based resin which contains styrene and other vinyl monomers as polymerization components and a (meth)acrylic acid ester-based resin which contains at least two kinds of (meth)acrylic acid esters as polymerization components and in which amass ratio of the (meth)acrylic acid esters to all polymerization components is 90% by mass or higher, a liberation rate of the inorganic oxide particles is 10% by mass or higher and 40% by mass or lower, the pressure-responsive particles have at least two glass transition temperatures, and a difference between a lowest glass transition temperature and a highest glass transition temperature is 30° C. or higher.

公开(公告)号：US20220064346A1

公开(公告)日：2022-03-03

申请号：US17149739

申请日：2021-01-15

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Yoshifumi IIDA ,  Takashi HASEGAWA ,  Satomi KASHIWAGI ,  Takako KOBAYASHI ,  Satoshi INOUE

IPC: C08F212/08 ,  C08L25/14 ,  C08L33/08 ,  C09D125/14 ,  C09D133/08 ,  B41L43/02 ,  B41M5/50 ,  B41M5/00

Abstract: Pressure-responsive particles include pressure-responsive base particles and fatty acid metal salt particles, in which the pressure-responsive base particles contain a styrene-based resin which contains styrene and other vinyl monomers as polymerization components and a (meth)acrylic acid ester-based resin which contains at least two kinds of (meth)acrylic acid esters as polymerization components and in which amass ratio of the (meth)acrylic acid esters to all polymerization components is 90% by mass or higher, the pressure-responsive particles have at least two glass transition temperatures, and a difference between the lowest glass transition temperature and the highest glass transition temperature is 30° C. or higher.

公开(公告)号：US20220308486A1

公开(公告)日：2022-09-29

申请号：US17643941

申请日：2021-12-13

Applicant: FUJIFILM Business Innovation Corp.

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

IPC: G03G9/087 ,  G03G13/20 ,  G03G9/08 ,  G03G9/09

Abstract: A particle set for producing a printed matter includes: a chromatic color toner containing toner particles A; and pressure-responsive particles containing base particles B, in which the base particles B contain a styrene resin containing, as polymerization components, styrene and a vinyl monomer other than styrene, and a (meth)acrylate resin containing, as a polymerization component, a (meth)acrylate, a mass ratio of the styrene resin to the (meth)acrylate resin (styrene resin:(meth)acrylate resin) is 80:20 to 20:80, a difference between the lowest glass transition temperature and the highest glass transition temperature of the pressure-responsive particles is 30° C. or more, and when the toner particles A have a volume average particle diameter D50A and the base particles B have a volume average particle diameter D50B, the D50A and the D50B satisfy formula 1-1: 1.5 μm

公开(公告)号：US20220064424A1

公开(公告)日：2022-03-03

申请号：US17157959

申请日：2021-01-25

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Yoshifumi IIDA ,  Takashi HASEGAWA ,  Satomi KASHIWAGI ,  Takako KOBAYASHI ,  Satoshi INOUE

IPC: C08L25/14 ,  C08K3/36 ,  C08K3/22 ,  C08L33/10 ,  C09J125/14 ,  C09J133/10 ,  B42D15/02

Abstract: Pressure-responsive particles include pressure-responsive base particles and first inorganic oxide particles, in which the pressure-responsive base particles contain a styrene-based resin which contains styrene and other vinyl monomers as polymerization components and a (meth)acrylic acid ester-based resin which contains at least two kinds of (meth)acrylic acid esters as polymerization components and in which a mass ratio of the (meth)acrylic acid esters to all polymerization components is 90% by mass or higher, Db/Da which is a ratio of a number average particle diameter Db of the first inorganic oxide particles to a number average particle diameter Da of the pressure-responsive base particles is 0.05 or higher and 0.25 or lower, the pressure-responsive particles have at least two glass transition temperatures, and a difference between a lowest glass transition temperature and a highest glass transition temperature is 30° C. or higher.