公开(公告)号：US20230324818A1

公开(公告)日：2023-10-12

申请号：US18193727

申请日：2023-03-31

Applicant: Konica Minolta, Inc.

Inventor： Kazukuni NISHIMURA ,  Toshiyuki FUJITA ,  Hiroki TAKAO ,  Seijiro TAKAHASHI ,  Tomoko SAKIMURA

IPC: G03G5/147 ,  G03G15/00 ,  G03G5/047 ,  G03G5/05 ,  G03G5/06

CPC classification number: G03G5/14708 ,  G03G15/75 ,  G03G5/14704 ,  G03G5/047 ,  G03G5/0564 ,  G03G5/06142

Abstract: Provided is an electrophotographic photoreceptor having at least a charge transport layer and a protective layer sequentially laminated on a conductive support, wherein the protective layer contains a cured product of a composition containing a charge transport compound having a chain polymerizable functional group; the charge transport layer and the protective layer are continuously laminated with intervening a mixed layer therebetween in which components of both layers of the charge transport layer and the protective layer are compatible; and the mixed layer has a thickness in the range of 0.1 to 1.0 μm.

公开(公告)号：US20220066337A1

公开(公告)日：2022-03-03

申请号：US17395098

申请日：2021-08-05

Applicant: Konica Minolta, Inc.

Inventor： Akihiko ITAMI ,  Seijiro TAKAHASHI ,  Seisuke MAEDA

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/093

Abstract: An image forming method uses an electrophotographic photoreceptor and a toner for developing an electrostatic charge image. The image forming method has a charging step, an exposure step, a developing step, a transfer step and a cleaning step, wherein the charging step uses a contact charging device; the photoreceptor has a universal hardness value (HU) of 170 N/mm2 or more, and an elastic deformation ratio of 40% or more when a Vickers indenter is used in a predetermined environment and pushed by a maximum load of 2 mN. The toner for developing an electrostatic charge image contains toner base particles of a core-shell structure having a shell layer of 10% by mass or less with respect to a mass of a toner base particle on an outside of a resin constituting a core particle, and a solubility parameter value (SPs) of a resin constituting the shell layer is 10.75 or less.

公开(公告)号：US20200264529A1

公开(公告)日：2020-08-20

申请号：US16744357

申请日：2020-01-16

Applicant: Konica Minolta, Inc.

Inventor： Seijiro TAKAHASHI ,  Kouji SUGAMA ,  Haruo HORIGUCHI ,  Yukiko KUSANO ,  Toyoko SHIBATA

IPC: G03G9/087

Abstract: Provided is an electrostatic image developing toner including toner particles containing a light phase transition material that change from a solid state to a liquid state by light irradiation and a binder resin, wherein ΔH1 (J/g) is 0.1 or more, provided that ΔH1 (J/g) is an endothermic amount based on a melting peak derived from the light phase transition material in a first temperature raising process of raising a temperature from 25 to 200° C., the endothermic amount being obtained from a DSC curve measured by differential scanning calorimtry to the electrostatic image developing toner.

公开(公告)号：US20200264527A1

公开(公告)日：2020-08-20

申请号：US16713866

申请日：2019-12-13

Applicant: Konica Minolta, Inc.

Inventor： Kouji SUGAMA ,  Seijiro TAKAHASHI ,  Haruo HORIGUCHI ,  Yukiko KUSANO ,  Toyoko SHIBATA

IPC: G03G9/087

Abstract: Provided is an electrostatic image developing toner containing toner particles, wherein the toner particles contain a compound (A) that undergoes a phase transition from a solid to a liquid by absorbing light, or contain a polymer (A′) containing a structural unit derived from the compound (A); and a part or all of a site derived from the compound (A) is included in a domain in the toner particle and exists as a domain

公开(公告)号：US20190171148A1

公开(公告)日：2019-06-06

申请号：US16186002

申请日：2018-11-09

Applicant: Konica Minolta, Inc.

Inventor： Haruo HORIGUCHI ,  Seijiro TAKAHASHI ,  Toyoko SHIBATA

IPC: G03G15/00

CPC classification number: G03G15/50 ,  G03G15/6582 ,  G03G2215/00805

Abstract: There is disclosed an image post-processing method for adjusting glossiness of a fixed toner image. The image post-processing method includes a glossiness control step of, with a non-contact heating device, heating a toner image fixed to a recording medium so as to reduce glossiness of the toner image. The non-contact heating device is configured to heat the toner image fixed to the recording medium to a temperature which reduces the glossiness of the fixed toner image.

公开(公告)号：US20200341412A1

公开(公告)日：2020-10-29

申请号：US16845843

申请日：2020-04-10

Applicant: Konica Minolta, Inc.

Inventor： Kouji SUGAMA ,  Michiyo FUJITA ,  Seijiro TAKAHASHI ,  Haruo HORIGUCHI

IPC: G03G15/20

Abstract: A 3D image forming method for forming a color 3D image on a recording medium having a thermal expansion property includes irradiating a medium surface on which the toner image is formed with light having a maximum emission wavelength in a wavelength range of 280 nm or more and 780 nm or less and being allowed to be absorbed by a compound contained in toner.

公开(公告)号：US20200073269A1

公开(公告)日：2020-03-05

申请号：US16506010

申请日：2019-07-09

Applicant: Konica Minolta, Inc.

Inventor： Seijiro TAKAHASHI ,  Haruo HORIGUCHI ,  Toyoko SHIBATA

IPC: G03G9/097 ,  G03G9/087 ,  C08F120/36 ,  G03G15/04

Abstract: A toner includes toner particles, wherein the toner particles contain a polymer containing a structural unit derived from an azobenzene derivative having a polymerizable group.

公开(公告)号：US20200050122A1

公开(公告)日：2020-02-13

申请号：US16429494

申请日：2019-06-03

Applicant: Konica Minolta, Inc.

Inventor： Toyoko SHIBATA ,  Seijiro TAKAHASHI ,  Haruo HORIGUCHI

IPC: G03G9/097 ,  C09D11/38 ,  G03G9/087 ,  C09D11/101 ,  G03G15/20 ,  B41J11/00

Abstract: Provided is an image recording composition used for an electrostatic image developing toner or an ink-jet ink, containing a photoisomerization compound which is a stilbene derivative having a structure represented by Formula (1), wherein R1 represents an electron donating group; R2 represents an electron withdrawing group; R3 to R10 each independently represent a hydrogen atom or an alkyl group which may have a branch, provided that at least one of R3 to R10 represents an alkyl group which may have a branch.

公开(公告)号：US20190171155A1

公开(公告)日：2019-06-06

申请号：US16185939

申请日：2018-11-09

Applicant: Konica Minolta, Inc.

Inventor： Haruo HORIGUCHI ,  Seijiro TAKAHASHI ,  Toyoko SHIBATA

IPC: G03G15/00

Abstract: Provided is an image post-processing method for controlling a glossiness of a fixed toner image, the method including a glossiness control step of: irradiating the fixed toner image formed with a toner containing a compound that absorbs light and fixed on a recording medium with a glossiness control light that is capable of at least reducing a glossiness of the fixed toner image, wherein the glossiness control light has a maximum emission wavelength in a wavelength region which is absorbed by the compound.

公开(公告)号：US20200264530A1

公开(公告)日：2020-08-20

申请号：US16788518

申请日：2020-02-12

Applicant: KONICA MINOLTA, INC.

Inventor： Yukiko KUSANO ,  Haruo HORIGUCHI ,  Kouji SUGAMA ,  Seijiro TAKAHASHI ,  Toyoko SHIBATA ,  Hirofumi HAYATA ,  Tomohiro OSHIYAMA

IPC: G03G9/097 ,  C07D333/28 ,  C07D307/56 ,  C07D207/335

Abstract: Disclosed is a compound containing a specific structure having an azomethine part, the compound being reversibly fluidized and non-fluidized by being irradiated with light.