公开(公告)号：US20250084222A1

公开(公告)日：2025-03-13

申请号：US18825011

申请日：2024-09-05

Applicant: Konica Minolta, Inc.

Inventor： Masashi IKEDA ,  Kouji IZAWA

IPC: C08J3/28 ,  C08J7/18 ,  C08K5/101 ,  C09D11/322

Abstract: A curable composition cured by irradiation with active rays. The content of a monofunctional polymerizable compound having a melting point of 25° C. or less is 5-50% by mass; the content of a polyfunctional polymerizable compound is 50-95% by mass. When a nanoindentation evaluator is used to press an indenter into a cured film (obtained by curing a coating film with an average thickness of 8 μm by irradiation with an active ray at a cumulative light amount of 400 mJ/m2) by 100 nm in the thickness direction, P1 is a load amount required for pressing, and P2 is a load amount after the pressing is maintained for 2 seconds, the cured film satisfies conditions (1) and (2): (1) P2 is 20 μN or less, and (2) A relaxation rate determined by an expression ((P1−P2)/P1×100) is 15% or more.

公开(公告)号：US20180284631A1

公开(公告)日：2018-10-04

申请号：US15934472

申请日：2018-03-23

Applicant: Konica Minolta, Inc.

Inventor： Takanari KAYAMORI ,  Masaharu MATSUBARA ,  Naoya TONEGAWA ,  Kouji IZAWA ,  Atsushi IIOKA

IPC: G03G9/087 ,  G03G9/09

CPC classification number: G03G9/0924 ,  G03G9/08755 ,  G03G9/091 ,  G03G9/092

Abstract: To provide a magenta toner for electrostatic charge image development including a crystalline polyester resin and an amorphous resin as a binder resin, which is a means for improving low temperature fixability, scattering properties, GI value, saturation, and light fastness.A magenta toner for electrostatic charge image development including an amorphous resin and a crystalline polyester resin as a binder resin, wherein predetermined quinacridone-based pigment, metal element-containing monoazo pigment, and naphthol AS-based pigment are included as a coloring agent, and the combined content of the quinacridone-based pigment and the metal element-containing monoazo pigment is 50-90% by mass of the total coloring agent.

公开(公告)号：US20250084271A1

公开(公告)日：2025-03-13

申请号：US18825049

申请日：2024-09-05

Applicant: Konica Minolta, Inc.

Inventor： Chikage OMOTE ,  Masashi IKEDA ,  Yoshihito TAGUCHI ,  Kouji IZAWA ,  Kenichiro HOSAKA

IPC: C09D11/38 ,  B41M7/00 ,  C09D11/101 ,  C09D11/102

Abstract: An inkjet ink includes a gelling agent and a polymerizable compound that is polymerized by active rays, and the inkjet ink undergoes sol-gel phase transition by the gelling agent. The polymerizable compound includes a first polymerizable compound, wherein the first polymerizable compound includes a benzene ring and further includes one or more ethylene oxide groups and/or one or more propylene oxide groups in a molecule thereof, and the total number of the ethylene oxide groups and the propylene oxide groups is 2 or more; the content of the first polymerizable compound is more than 5% by mass based on the total mass of the inkjet ink; and the gelling agent is a compound that causes the ink to undergo a reversible sol-gel phase transition by a temperature change, and the gelling includes a hydrocarbon group having 22 or less carbon atoms.

公开(公告)号：US20180088481A1

公开(公告)日：2018-03-29

申请号：US15710327

申请日：2017-09-20

Applicant: Konica Minolta, Inc.

Inventor： Takanari KAYAMORI ,  Masaharu MATSUBARA ,  Naoya TONEGAWA ,  Kouji IZAWA ,  Atsushi IIOKA

IPC: G03G9/097 ,  G03G9/08 ,  G03G9/083

CPC classification number: G03G9/09716 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/0823 ,  G03G9/0827 ,  G03G9/0832 ,  G03G9/0833 ,  G03G9/08722 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/0902 ,  G03G9/0926 ,  G03G9/09725

Abstract: An electrostatic charge image developing white toner according to the present invention includes toner base particles including rutile type titanium oxide particles as colorant and a binder resin. The rutile type titanium oxide particles are composed of two groups Ga and Gb of rutile type titanium oxide particles have different volume particle size distribution. A volume particle size distribution curve of the rutile type titanium oxide particles represents diameter on a horizontal axis and volume ratio on a vertical axis and has two main peaks. Diameters Da and Db of peak top positions of the two main peaks are respectively within a range of 100 to 500 nm, and satisfy following Relational expressions: 25 nm≦Db−Da≦200 nm  (Relational expression 1): (mass of Ga):(mass of Gb)=5:95 to 30:70  (Relational expression 2):