Invention Application
- Patent Title: PRESSURE-RESPONSIVE PARTICLES, CARTRIDGE, AND APPARATUS FOR MANUFACTURING PRINTED MATTER
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Application No.: US17547164Application Date: 2021-12-09
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Publication No.: US20220227906A1Publication Date: 2022-07-21
- Inventor: Yoshifumi IIDA , Takako KOBAYASHI , Takashi HASEGAWA , Kiyohiro YAMANAKA , Takeshi IWANAGA , Satoshi KAMIWAKI , Mieko SEKI , Sumiaki YAMASAKI
- Applicant: FUJIFILM Business Innovation Corp.
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee Address: JP Tokyo
- Priority: JP2021-006587 20210119,JP2021-154746 20210922
- Main IPC: C08F212/08
- 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%.
Public/Granted literature
- US12103993B2 Pressure-responsive particles, cartridge, and apparatus for manufacturing printed matter Public/Granted day:2024-10-01
Information query
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