公开(公告)号：US20200150577A1

公开(公告)日：2020-05-14

申请号：US16600051

申请日：2019-10-11

Applicant: Konica Minolta, Inc.

Inventor： Kazumi OURA ,  Michiyo FUJITA ,  Kaori MATSUSHIMA

IPC: G03G15/00

Abstract: The present invention provides an image forming method for forming a decorated image having a resin layer and a powder contacted with each other, the method including: forming a resin layer on a recording medium; and supplying a powder onto the recording medium, in which, in viscoelasticity measurement of the resin layer, storage modulus G′(1) at 90° C. is 1.0×103 Pa or more and 1.0×106 Pa or less upon carrying out the measurement from 30° C. to 100° C. under conditions of a frequency of 1 Hz and a temperature increasing rate of 3° C./min.

公开(公告)号：US20250138454A1

公开(公告)日：2025-05-01

申请号：US18919665

申请日：2024-10-18

Applicant: KONICA MINOLTA, INC.

Inventor： Kazumi OURA ,  Tomoko MINE

IPC: G03G15/20 ,  G03G9/08

Abstract: An image forming method that uses an electrostatic charge image development toner containing a toner particle, the image forming method includes, bringing a first fixer into contact with a recording medium on which a toner image containing the electrostatic charge image development toner is formed and fixing the toner image on the recording medium; and cooling the recording medium by bringing a first cooler into contact with the recording medium separated from the first fixer. The toner particle includes an amorphous polyester and a crystalline polyester. A content of a structural unit derived from a bisphenol A derivative is 30 mol % or less based on 100 mol % of all structural units derived from polyhydric alcohols in the amorphous polyester.

公开(公告)号：US20190294067A1

公开(公告)日：2019-09-26

申请号：US16295487

申请日：2019-03-07

Applicant: Konica Minolta, Inc.

Inventor： Kouji SUGAMA ,  Kazumi OURA ,  Masaharu MATSUBARA ,  Ikuko SAKURADA

IPC: G03G9/087 ,  G03G9/113

Abstract: The electrostatic charge image developing toner of the present invention is an electrostatic charge image developing toner including a toner mother particle including at least a binding resin, and an external additive attached onto a surface of the toner mother particle, wherein a median size on a volume basis of the toner mother particle is in the range from 3.0 to 5.0 μm, the binding resin contains at least an amorphous polyester resin as a main component, and a spherical silica particle (1) having a number average particle size in the range from 20 to 55 nm is included as the external additive.

公开(公告)号：US20240302769A1

公开(公告)日：2024-09-12

申请号：US18591850

申请日：2024-02-29

Applicant: Konica Minolta, Inc.

Inventor： Kazumi OURA ,  Hiroshi NAGASAWA ,  Masaharu MATSUBARA ,  Koji SHIBATA ,  Akihiko ITAMI ,  Makoto NOMIYA ,  Natsuki ITO

IPC: G03G15/16 ,  C04B35/47 ,  G03G9/08 ,  G03G21/00

CPC classification number: G03G15/1605 ,  C04B35/47 ,  G03G9/0819 ,  G03G21/0005 ,  G03G2215/0861

Abstract: Disclosed is an image forming method including: developing, with an electrostatic charge image developing toner, a latent image formed on a photoreceptor in which a photosensitive layer is formed on a support containing aluminum as a main component; transferring a toner image on the photoreceptor onto a transfer target; and rubbing and removing the electrostatic charge image developing toner remaining on the photoreceptor after the transferring. The support contains silicon in a range of more than 0.6% by mass and 12.6% by mass or less, a shape factor of toner particles included in the electrostatic charge image developing toner is in a range of 0.800 to 0.970, and a content of the toner particles having a particle diameter of 2 μm or less is in a range of 5% by number to 30% by number.

公开(公告)号：US20230022529A1

公开(公告)日：2023-01-26

申请号：US17829965

申请日：2022-06-01

Applicant: Konica Minolta, Inc.

Inventor： Tatsuya FUJISAKI ,  Junya ONISHI ,  Kaori FUJINO ,  Kazumi OURA

IPC: G03G9/087 ,  G03G9/097 ,  G03G9/08 ,  G03G15/08

Abstract: Provided is an electrostatic charge image developing toner including toner base particles containing a binder resin an a mold release agent, wherein a molecular weight corresponding to a main peak top of a molecular weight distribution curve of constituent components of the electrostatic charge image developing toner obtained by gel permeation chromatography is 15,000 or more; and in comparison of an area ratio of each peak in the molecular weight distribution curve, the binder resin contains an amorphous material of a low molecular weight component having a weight average molecular weight of 300 or more and less than 1000 in the area ratio of 10 to 20% with respect to the total amount of the binder resin.

公开(公告)号：US20220326631A1

公开(公告)日：2022-10-13

申请号：US17656578

申请日：2022-03-25

Applicant: Konica Minolta, Inc.

Inventor： Junya ONISHI ,  Tatsuya FUJISAKI ,  Kazumi OURA ,  Kaori FUJINO

IPC: G03G9/087 ,  G03G9/097 ,  C08F212/08 ,  C08G63/16 ,  C08G63/183

Abstract: Provided is an electrostatic charge image developing toner containing at least toner particles, wherein the toner particles contain an amorphous vinyl resin, an amorphous polyester resin, a crystalline polyester resin, and an ester wax; the crystalline polyester resin is a crystalline polyester resin obtained by polycondensation of a dicarboxylic acid having a number of carbon atoms in the range of 9 to 14 and a dialcohol having a number of carbon atoms in the range of 9 to 14; the amorphous polyester resin is an amorphous polyester resin containing a constituent unit derived from a dicarboxylic acid having a number of carbon atoms in the range of 9 to 14 or a dialcohol having a number of carbon atoms in the range of 9 to 14; and a sum of the number of carbon atoms of the dicarboxylic acid and the dialcohol is in the range of 18 to 24.