公开(公告)号：US20180335707A1

公开(公告)日：2018-11-22

申请号：US15966797

申请日：2018-04-30

Applicant: Konica Minolta, Inc.

Inventor： Seisuke MAEDA ,  Kazunori KURIMOTO ,  Kazuhiro KURAMOCHI

IPC: G03G5/043

CPC classification number: G03G5/043

Abstract: An electrophotographic photoreceptor has a charge generating layer, a charge transporting layer, and an outermost surface layer laminated in this order on a conductive support, wherein the outermost surface layer contains composite structural particles obtained by coating inorganic particles with oxygen-deficient conductive tin oxide, and the composite structural particles have an L value of 80 to 95, and primary particles thereof have an average particle diameter of 35 to 200 nm.

公开(公告)号：US20190086840A1

公开(公告)日：2019-03-21

申请号：US16115106

申请日：2018-08-28

Applicant: Konica Minolta, Inc.

Inventor： Kazunori KURIMOTO ,  Akihiro HONYA ,  Teruo SASAKI

IPC: G03G15/16 ,  G03G15/01 ,  C08L71/02 ,  C08L57/10

Abstract: There is provided an intermediate transfer body used for an electrophotographic image forming device, the intermediate transfer body including: at least a base layer, and a surface layer, wherein the surface layer includes a polymer obtained by polymerizing a polyfunctional monomer and a monofunctional monomer having a long-chain alkyl group, and a solubility parameter (SP (M1)) of the polyfunctional monomer (M1) and a solubility parameter (SP (M2)) of the long-chain alkyl monofunctional monomer (M2) satisfy the following formulas (A) and (B): SP(M1)−SP(M2)

公开(公告)号：US20140287351A1

公开(公告)日：2014-09-25

申请号：US14215665

申请日：2014-03-17

Applicant: Konica Minolta, Inc.

Inventor： Hiroki TAKAO ,  Kazunori KURIMOTO

IPC: G03G15/00

CPC classification number: G03G5/14704 ,  G03G5/14791 ,  G03G5/14795

Abstract: Disclosed are an electrophotographic photoreceptor which has high durability and high potential characteristics and can suppress the occurrence of stick-slip and turning up of a blade and the abrasion of the blade even when the blade is used as a cleaning unit. The surface layer contains barium sulfate composite fine particles, in which a conductive metal oxide is adhered to the surface of a core material made from barium sulfate, in a cured resin. The 10 point average roughness RzJIS of the surface layer is not less than 0.2 μm and not more than 1.5 μm, and a value obtained by an equation n×d, wherein n represents the peak count of the surface layer and d represents the number average primary particle diameter of the barium sulfate composite fine particles, is not less than 10,000 (pieces•nm) and not more than 200,000 (pieces•nm).

Abstract translation: 公开了一种具有高耐久性和高电位特性的电子照相感光体，即使当刮板用作清洁单元时，也可以抑制刮刀的粘滑和卷起以及刀片的磨损。 在固化树脂中，表面层含有硫酸钡复合微粒，其中导电金属氧化物粘附到由硫酸钡制成的芯材的表面上。 表面层的10点平均粗糙度RzJIS为0.2μm以上且1.5μm以下，通过n×d得到的值，其中n表示表面层的峰值，d表示数均 硫酸钡复合微粒的一次粒径不小于10,000（片·nm）且不大于200,000（片·nm）。

公开(公告)号：US20170131645A1

公开(公告)日：2017-05-11

申请号：US15345993

申请日：2016-11-08

Applicant: Konica Minolta, Inc.

Inventor： Seisuke MAEDA ,  Kazunori KURIMOTO ,  Kazuhiro KURAMOCHI

IPC: G03G15/00

CPC classification number: G03G5/14717 ,  G03G5/047 ,  G03G5/0507 ,  G03G5/0517 ,  G03G5/14704 ,  G03G5/14708 ,  G03G5/14791

Abstract: Provided is an electrographic photoconductor resistant to surface discharge and having good wear resistance. The electrographic photoconductor has a conductive support and a photosensitive layer disposed on the conductive support, the photosensitive layer containing a charge generation material and a charge transport material. A layer forming the surface of the electrographic photoconductor contains a resin binder forming the layer and a layered carbide dispersed in the resin binder. The layer forming the surface has a light transmittance in the range of 20 to 98% at a wavelength of 350 to 800 nm.

公开(公告)号：US20200081376A1

公开(公告)日：2020-03-12

申请号：US16557265

申请日：2019-08-30

Applicant: Konica Minolta, Inc.

Inventor： Akihiro HONYA ,  Kazunori KURIMOTO ,  Teruo SASAKI

IPC: G03G15/16 ,  G03G15/01

Abstract: An intermediate transfer body used in an electrophotographic image forming device includes: at least a substrate layer and a surface layer, wherein the surface layer is formed by a cured product obtained by curing a coating liquid containing a curable compound, an inorganic filler, and a fluorine-based surfactant having a reactive group, and the surface layer has a pure water contact angle of 75° or more and 90° or less.

公开(公告)号：US20180364603A1

公开(公告)日：2018-12-20

申请号：US16000379

申请日：2018-06-05

Applicant: Konica Minolta, Inc.

Inventor： Teruo SASAKI ,  Akihiro HONYA ,  Kazunori KURIMOTO

IPC: G03G15/01 ,  G03G15/16

Abstract: The intermediate transfer member of the present invention has a substrate layer made of a resin and a surface layer disposed on the substrate layer. The surface layer is an integrated matter made of a polymer of a polyfunctional monomer and contains a black titanium compound dispersed in the surface layer. A method for producing the same comprises irradiating a coating film of a coating containing a black titanium oxide and the monomer with a high energy light beam to polymerize the monomer to thereby fabricate the surface layer. The image forming apparatus of the present invention has the intermediate transfer member.

公开(公告)号：US20180143545A1

公开(公告)日：2018-05-24

申请号：US15819597

申请日：2017-11-21

Applicant: Konica Minolta, Inc.

Inventor： Seisuke MAEDA ,  Kazunori KURIMOTO ,  Kazuhiro KURAMOCHI

IPC: G03G5/087 ,  G03G15/00 ,  G03G5/047

CPC classification number: G03G5/087 ,  G03G5/14704 ,  G03G5/14708 ,  G03G5/14726 ,  G03G15/75

Abstract: In an electrophotographic photoreceptor, an electric charge generating layer and an electric charge transport layer are laminated on a conductive support body in this order, a layer configuring an outermost surface of the electrophotographic photoreceptor contains composite structure particles in which a core material is inorganic particles, and the inorganic particles are coated with tin oxide doped with aluminum, and an average particle diameter of primary particles of the composite structure particles is 50 nm to 200 nm.

公开(公告)号：US20150253720A1

公开(公告)日：2015-09-10

申请号：US14641891

申请日：2015-03-09

Applicant: Konica Minolta, Inc.

Inventor： Kazunori KURIMOTO ,  Masahiko KURACHI ,  Takeshi ISHIDA ,  Hokuto HATANO

IPC: G03G15/00

CPC classification number: G03G21/0005 ,  G03G5/14704 ,  G03G5/14734 ,  G03G5/14769 ,  G03G5/14773 ,  G03G5/14791 ,  G03G15/75

Abstract: An image forming apparatus includes an electrophotographic photoreceptor, a proximity-type charging unit to negatively charge the surface of the photoreceptor, an exposing unit to form an electrostatic latent image on the surface of the photoreceptor, a developing unit to develop the electrostatic latent image with a toner to form a toner image, a transferring unit to transfer the toner image onto a transfer medium, a fixing unit to fix the transferred toner image on the transfer medium, and a cleaning unit to remove residual toner on the photoreceptor. The photoreceptor comprises a conductive support, a photosensitive layer formed over the conductive support, and a protective layer formed over the photosensitive layer. The protective layer of the photoreceptor contains a binder resin, a particulate P-type semiconductor, and a particulate cross-linked resin composed of an insulating cross-linked polymer.

Abstract translation: 图像形成装置包括电子照相感光体，对感光体的表面负电荷的接近型充电单元，在感光体的表面上形成静电潜像的曝光单元，显影单元，使静电潜像显影， 用于形成调色剂图像的调色剂，将调色剂图像转印到转印介质上的转印单元，将转印的调色剂图像固定在转印介质上的定影单元，以及清除感光体上的残留调色剂的清洁单元。 感光体包括导电支撑体，形成在导电支撑体上的感光层，以及形成在感光层上的保护层。 感光体的保护层含有粘合剂树脂，粒状P型半导体以及由绝缘性交联聚合物构成的粒状交联树脂。