公开(公告)号：US20230288867A1

公开(公告)日：2023-09-14

申请号：US18174978

申请日：2023-02-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： HIDEHARU SHIMOZAWA ,  KANAME WATARIGUCHI ,  CHIHARU NAKAZONO ,  TSUTOMU NISHIDA ,  ATSUSHI OKUDA ,  TAIJI KATSURA ,  YUICHI KIKUCHI

IPC: G03G21/18 ,  G03G5/147 ,  G03G9/097

CPC classification number: G03G21/1814 ,  G03G5/14769 ,  G03G9/09708

Abstract: A process cartridge detachably attachable to a main body of an electrophotographic apparatus, the process cartridge including an electrophotographic photosensitive member, a toner, and a developing member that feeds the toner to the electrophotographic photosensitive member, wherein the electrophotographic photosensitive member includes a surface layer containing a (meth)acrylic resin having a urethane structure, the toner includes a toner particle and a hydrotalcite particle as an external additive, and the hydrotalcite particle contains fluorine in filter fitting analysis in STEM-EDS analysis.

公开(公告)号：US20230273535A1

公开(公告)日：2023-08-31

申请号：US18135815

申请日：2023-04-18

Applicant: Mitsubishi Chemical Corporation

Inventor： Akira Ando ,  Takahiro Choda

IPC: G03G5/147 ,  G03G5/047

CPC classification number: G03G5/14769 ,  G03G5/047 ,  G03G5/14704

Abstract: As an electrophotographic photoreceptor including a protective layer (an outermost layer), a photosensitive layer and a conductive support, wherein the protective layer (the outermost layer) comprises a polymer obtained by polymerizing a compound having a chain polymerizable functional group, and the photosensitive layer comprises a hole transport material satisfying the following formula (1) and an electron transport material satisfying the following formula (2):


600≤a  (1)



400≤b  (2)



in the formula (1), a represents a molecular weight of the hole transport material, and in the formula (2), b represents a molecular weight of the electron transport material.

公开(公告)号：US20230152723A1

公开(公告)日：2023-05-18

申请号：US18098991

申请日：2023-01-19

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： WEIMEI LUO ,  MARK THOMAS BELLINO

IPC: G03G5/147

CPC classification number: G03G5/14769 ,  G03G5/14704

Abstract: An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a crosslinkable siloxane, nano metal oxide particles sized less than 400 nm in combination with a urethane acrylate resin having at least 6 functional groups. The outermost layer of an organic photoconductors is coated with the overcoat formulation of the present invention then cured. The resulting cured overcoated organic photoconductor has improved wear resistance and importantly does not negatively altering the electrophotographic properties of the organic photoconductor.

公开(公告)号：US09933715B2

公开(公告)日：2018-04-03

申请号：US15180566

申请日：2016-06-13

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Krzysztof Nauka ,  Zhang-Lin Zhou ,  Hou T. Ng

IPC: G03G5/147 ,  B05D7/00 ,  G03G5/00 ,  G03G5/07

CPC classification number: G03G5/14791 ,  B05D7/50 ,  G03G5/005 ,  G03G5/07 ,  G03G5/14721 ,  G03G5/14734 ,  G03G5/14739 ,  G03G5/14769 ,  G03G5/14778

Abstract: The present disclosure is related to coated photoconductors. In an example, a coated photoconductor can comprise a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto and a top coating adhered to the photoconductor.

公开(公告)号：US09639010B2

公开(公告)日：2017-05-02

申请号：US14499900

申请日：2014-09-29

Applicant: Konica Minolta, Inc.

Inventor： Hokuto Hatano ,  Kazunori Kurimoto ,  Seisuke Maeda ,  Hiroki Takao

IPC: G03G5/05 ,  G03G5/147

CPC classification number: G03G5/0575 ,  G03G5/0507 ,  G03G5/0542 ,  G03G5/0546 ,  G03G5/0592 ,  G03G5/14704 ,  G03G5/14708 ,  G03G5/14734 ,  G03G5/14769 ,  G03G5/14791

Abstract: Disclosed is an electrophotographic photoreceptor including a conductive support, a photosensitive layer on the conductive support and a surface layer on the photosensitive layer. The surface layer includes a cured resin prepared by polymerization of a compound having two or more radically polymerizable functional groups per molecule, the cured resin containing an organic resin fine particle and a metal oxide fine particle, and the organic resin fine particle comprising a resin containing a structural unit derived from at least one of melamine and benzoguanamine, the organic resin fine particle having a number average primary particle size of 0.01 to 3.00 μm.

公开(公告)号：US09529286B2

公开(公告)日：2016-12-27

申请号：US14052471

申请日：2013-10-11

Applicant: XEROX CORPORATION

Inventor： Mahya Mokhtari ,  Marko D. Saban

IPC: G03G5/147 ,  C07C209/84 ,  B29C39/00 ,  B29C39/14 ,  B29C39/38 ,  B29K61/00 ,  B29K105/00 ,  B29L9/00 ,  B29L31/00

CPC classification number: G03G5/14769 ,  B29C39/006 ,  B29C39/14 ,  B29C39/38 ,  B29K2061/00 ,  B29K2105/0044 ,  B29L2009/00 ,  B29L2031/767 ,  C07C209/84 ,  G03G5/14708 ,  C07C211/54

Abstract: Antioxidants used for overcoat layers and processes for making the same. The present process for making the antioxidant has proven to be repeatable, cheaper, faster and safer than conventional processes. In particular, the present process uses a different solvent system where crude bis(4-diethylamino-2-methylphenyl)-(4-diethylaminophenylmethane) is dissolved in methylethyl ketone at room temperature, followed by product precipitation in a warm mixture of ethanol and water.

Abstract translation: 用于外涂层的抗氧化剂及其制造方法。 本发明制备抗氧化剂的方法已证明是可重复的，比常规方法更便宜，更快速和更安全。 特别地，本方法使用不同的溶剂体系，其中粗双（4-二乙氨基-2-甲基苯基） - （4-二乙基氨基苯基甲烷）在室温下溶解在甲基乙基酮中，然后在乙醇和水的温热混合物中产物沉淀 。

公开(公告)号：US09523928B2

公开(公告)日：2016-12-20

申请号：US14498191

申请日：2014-09-26

Applicant: XEROX CORPORATION

Inventor： Gregory McGuire ,  Adrien P. Cote ,  Richard A. Klenkler ,  Yvan Gagnon

IPC: G03G5/06 ,  G03G7/00 ,  G03G5/147 ,  G03G5/05

CPC classification number: G03G5/14747 ,  G03G5/0557 ,  G03G5/0592 ,  G03G5/0614 ,  G03G5/1476 ,  G03G5/14769 ,  G03G5/14791 ,  G03G7/0026

Abstract: A method of forming an overcoat layer. The method comprises providing a substrate having an imaging structure formed thereon, the imaging structure comprising (i) a charge transport layer and a charge generating layer, or (ii) an imaging layer comprising both charge generating material and charge transport material. An overcoat composition is deposited on the imaging structure, the overcoat composition comprising a charge transport molecule, a fluorinated building block, a leveling agent, a liquid carrier and optionally a first catalyst. The fluorinated building block is a fluorinated alkyl monomer substituted at the α and ω positions with a hydroxyl, carboxyl, carbonyl or aldehyde functional group or the anhydrides of any of those functional groups. The overcoat composition is cured to form an overcoat layer that is a fluorinated structured organic film, the curing comprising treating an outer surface of the overcoat composition with at least one cross-linking process. The crosslinking process forms a cross-linking gradient in the overcoat layer. If the overcoat composition comprises the first catalyst, there is an insufficient amount of the first catalyst to fully cross-link the overcoat layer.

Abstract translation: 形成外涂层的方法。 该方法包括提供其上形成有成像结构的基底，所述成像结构包括（i）电荷传输层和电荷产生层，或（ii）包含电荷产生材料和电荷传输材料的成像层。 外涂层组合物沉积在成像结构上，外涂层组合物包含电荷输送分子，氟化结构单元，流平剂，液体载体和任选的第一催化剂。 氟化结构单元是在α和ω位置被羟基，羧基，羰基或醛官能团取代的氟化烷基单体或任何这些官能团的酸酐。 外涂层组合物被固化以形成作为氟化结构有机膜的外涂层，固化包括用至少一个交联方法处理外涂层组合物的外表面。 交联过程在外涂层中形成交联梯度。 如果外涂层组合物包含第一催化剂，则第一催化剂的量不足以完全交联外涂层。

公开(公告)号：US09500968B2

公开(公告)日：2016-11-22

申请号：US14620053

申请日：2015-02-11

Applicant: XEROX CORPORATION

Inventor： Gregory McGuire ,  Richard A. Klenkler ,  Adrien P. Côté ,  Yvan Gagnon

IPC: G03G5/147 ,  G03G7/00

CPC classification number: G03G5/14769 ,  G03G5/076 ,  G03G5/14786 ,  G03G5/14791 ,  G03G5/14795 ,  G03G7/002

Abstract: An overcoat layer comprises a structured organic film (SOF) comprising a plurality of segments and a plurality of linkers including a first fluorinated segment and a second electroactive segment, and an antioxidant is present in the SOF; and a hole transport molecule which does not form a network with the SOF.

Abstract translation: 外涂层包括包含多个链段的结构化有机膜（SOF）和包括第一氟化链段和第二电活性链段的多个连接体，并且抗氧化剂存在于SOF中; 以及不与SOF形成网络的空穴传输分子。

公开(公告)号：US20150118605A1

公开(公告)日：2015-04-30

申请号：US14391012

申请日：2012-06-25

Applicant: Krzysztof Nauka ,  Zhang-Lin Zhou ,  Hou T. Ng

Inventor： Krzysztof Nauka ,  Zhang-Lin Zhou ,  Hou T. Ng

IPC: G03G5/147

CPC classification number: G03G5/14791 ,  G03G5/005 ,  G03G5/07 ,  G03G5/14721 ,  G03G5/1473 ,  G03G5/14734 ,  G03G5/14739 ,  G03G5/14752 ,  G03G5/14769 ,  G03G5/14778

Abstract: The present disclosure is related to coated photoconductors. In an example, a coated photoconductor can comprise a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto and a top coating adhered to the photoconductor. The top coating can comprise a cross-linkable polymer, a cross-linker, and a polymeric dopant having a weight average molecular weight of less than 500,000. Additionally, the top coating can have a thickness of 0.1 μm to 12 μm and the polymeric dopant can be present in the top coating at a concentration of 0.1 wt % to 10 wt %.

Abstract translation: 本公开涉及涂覆的光电导体。 在一个实例中，涂覆的光电导体可以包括光电导体，其包括具有附着到其上的电荷产生层和电荷传输层的基底和附着到光电导体的顶部涂层。 顶部涂层可以包含可交联聚合物，交联剂和重均分子量小于500,000的聚合物掺杂剂。 此外，顶部涂层可以具有0.1μm至12μm的厚度，并且聚合物掺杂剂可以以0.1wt％至10wt％的浓度存在于顶部涂层中。

公开(公告)号：US20150099225A1

公开(公告)日：2015-04-09

申请号：US14569948

申请日：2014-12-15

Applicant: Lexmark International, Inc.

Inventor： Mark Thomas Bellino ,  David Glen Black ,  Weimei Luo ,  Scott Daniel Reeves

IPC: G03G5/06

CPC classification number: G03G5/0618 ,  G03G5/14734 ,  G03G5/14769 ,  G03G5/14786 ,  G03G5/14791

Abstract: A method of preparing a photoconductor drum having an overcoat layer is provided. The photoconductor drum is used in an electrophotographic image forming device. The photoconductor drum is prepared from a curable composition including a urethane resin having at least six radical polymerizable functional groups and a charge transport molecule having at least one radical polymerizable functional group. The amount of the urethane resin having at least six radical polymerizable functional groups in the curable composition is about 35 percent to about 65 percent by weight. The amount of the charge transport molecules having at least one radical polymerizable functional group in the curable composition is about 35 percent to about 65 percent by weight. This overcoat layer improves wear resistance of the photoconductor drum without negatively altering the electrophotographic properties, thus protecting the photoconductor drum from damage and extending its useful life.

Abstract translation: 提供了制备具有外涂层的感光鼓的方法。 感光鼓用于电子照相成像装置中。 感光鼓由包含具有至少六个可自由基聚合的官能团的聚氨酯树脂和具有至少一个可自由基聚合的官能团的电荷传输分子的可固化组合物制备。 在可固化组合物中具有至少六个可自由基聚合的官能团的聚氨酯树脂的量为约35重量％至约65重量％。 在可固化组合物中具有至少一个可自由基聚合的官能团的电荷传输分子的量为约35重量％至约65重量％。 该外涂层提高了感光鼓的耐磨性，而不会不利地改变电子照相性能，从而保护感光鼓免受损坏并延长其使用寿命。