公开(公告)号：US20220009220A1

公开(公告)日：2022-01-13

申请号：US17353746

申请日：2021-06-21

Applicant: Konica Minolta, Inc.

Inventor： Kouji SUGAMA ,  Kazuhiko NAKAJIMA ,  Kengo IKEDA

IPC: B41C1/10 ,  B41C1/055 ,  B41N3/00

Abstract: The platemaking apparatus according to the present invention forms a pattern on an ink film-forming press plate that has a surface layer containing a stimulus-responsive compound whose physical property can reversibly change in response to an external stimulus. The platemaking apparatus includes: a first stimulator that applies, to a surface of the press plate, a first stimulus that changes the physical property of the surface from a first physical property to a second physical property to form the pattern, on the basis of image data; a second stimulator that applies, to the surface of the press plate, a second stimulus that changes the physical property of the surface from the second physical property to the first physical property, to erase the pattern; and a cleaning unit that removes an ink remained on the surface of the press plate.

公开(公告)号：US20230341791A1

公开(公告)日：2023-10-26

申请号：US18299769

申请日：2023-04-13

Applicant: Konica Minolta, Inc.

Inventor： Keisuke ASANO ,  Kazuhiko NAKAJIMA

IPC: G03G9/09 ,  G03G9/087

CPC classification number: G03G9/0926 ,  G03G9/08711

Abstract: Provided is a toner set for developing an electrostatic charge image, including a first toner and a second toner whose toner matrix particles contain different types of pigments, wherein the first toner matrix particles included in the first toner and the second toner matrix particles included in the second toner both contain at least the pigment and a crystalline resin; and the first toner and the second toner satisfy the following specific Expressions (1A) and (2A),


10≤WP1−WP2   Expression (1A)



ΔHC1/ΔHC2≤0.15.   Expression (2A)

公开(公告)号：US20240219856A1

公开(公告)日：2024-07-04

申请号：US18537017

申请日：2023-12-12

Applicant: Konica Minolta, Inc.

Inventor： Kazuhiko NAKAJIMA

IPC: G03G9/09 ,  G03G9/08 ,  G03G9/097

CPC classification number: G03G9/0926 ,  G03G9/0819 ,  G03G9/0902 ,  G03G9/09725 ,  G03G2215/0409

Abstract: An image forming system that forms an image on a continuous sheet using an electrostatic charge image development toner. The electrostatic charge image development toner includes a toner base particle including a binder resin and a brilliant pigment having a coating layer containing an inorganic element.

公开(公告)号：US20200285166A1

公开(公告)日：2020-09-10

申请号：US16786069

申请日：2020-02-10

Applicant: Konica Minolta, Inc.

Inventor： Masaharu MATSUBARA ,  Ikuko SAKURADA ,  Tomoko MINE ,  Kazuhiko NAKAJIMA

IPC: G03G9/09 ,  G03G9/097 ,  G03G9/08

Abstract: A toner for developing an electrostatic image includes toner base particles containing a binder resin and an inorganic pigment, and an external additive, wherein the external additive contains alumina particles, and the number average particle size of primary particles of the alumina particles is in the range of 5 nm to 60 nm.

公开(公告)号：US20230408941A1

公开(公告)日：2023-12-21

申请号：US18323690

申请日：2023-05-25

Applicant: Konica Minolta, Inc.

Inventor： Yohei MARUYAMA ,  Kazuhiko NAKAJIMA

IPC: G03G9/093

CPC classification number: G03G9/09385 ,  G03G9/09328

Abstract: An electrophotographic toner of the present invention includes a toner mother particle including a bright pigment and a resin layer coating the bright pigment. The bright pigment includes a bright portion and a coating layer coating the bright portion, and when the average thickness of the coating layer is A nm and the average thickness of the resin layer is B nm, the electrophotographic toner satisfies A+B≤1.600 nm.

公开(公告)号：US20190317419A1

公开(公告)日：2019-10-17

申请号：US16299858

申请日：2019-03-12

Applicant: Konica Minolta, Inc.

Inventor： Kazuhiko NAKAJIMA

IPC: G03G9/09 ,  G03G9/097 ,  G03G9/087 ,  G03G15/01 ,  G03G15/20

Abstract: Provided is an electrophotographic image forming method using two or more electrostatic image developing toners including a charging step, an exposing step, a developing step, a transferring step, and a fixing step, wherein, among the two or more toners, at least one is an achromatic color toner or a clear toner, and at least one is a chromatic color toner which contains a crystalline resin and a releasing agent; in the fixing step, a recording material to which is transferred an unfixed image formed with the two or more electrostatic image developing toners is nipped and conveyed to a fixing nip portion provided between a heated fixing rotating body and a pressure member, and thermally fixed; and a residual toner component is cleaned by a cleaning rotating body which is in contact with the fixing rotating body and a cleaning member which is in contact with the cleaning rotating body.

公开(公告)号：US20180074422A1

公开(公告)日：2018-03-15

申请号：US15690464

申请日：2017-08-30

Applicant: Konica Minolta, Inc.

Inventor： Kazuhiko NAKAJIMA ,  Miyuki YAMADA

IPC: G03G9/09 ,  G03G9/08

CPC classification number: G03G9/0926 ,  G03G9/0821 ,  G03G9/09708

Abstract: An electrostatic charge image developing toner includes a white pigment being acicular titanium oxide having an average aspect ratio within a range of 3 to 30.