JP2005140975A5 - - Google Patents

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Publication number
JP2005140975A5
JP2005140975A5 JP2003377044A JP2003377044A JP2005140975A5 JP 2005140975 A5 JP2005140975 A5 JP 2005140975A5 JP 2003377044 A JP2003377044 A JP 2003377044A JP 2003377044 A JP2003377044 A JP 2003377044A JP 2005140975 A5 JP2005140975 A5 JP 2005140975A5
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JP
Japan
Prior art keywords
developer
average particle
particle size
coating layer
resin coating
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JP2003377044A
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Japanese (ja)
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JP4280604B2 (en
JP2005140975A (en
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Priority to JP2003377044A priority Critical patent/JP4280604B2/en
Priority claimed from JP2003377044A external-priority patent/JP4280604B2/en
Publication of JP2005140975A publication Critical patent/JP2005140975A/en
Publication of JP2005140975A5 publication Critical patent/JP2005140975A5/ja
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Publication of JP4280604B2 publication Critical patent/JP4280604B2/en
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Claims (5)

静電潜像担持体上に形成された静電潜像を現像剤担持体により担持搬送された一成分系現像剤により現像し、トナー像を形成する現像装置に用いられる現像剤担持体において、該現像剤担持体は、少なくとも基体および該基体表面に形成された導電性樹脂被覆層を有し、
該導電性樹脂被覆層は少なくとも（ａ）結着樹脂、（ｂ）該導電性樹脂被覆層に凹凸を形成させるための少なくともその表面が炭素質からなる個数平均粒径が３〜３０μｍである粒子、および、（ｃ）モース硬度が６以上であり、個数平均粒径が２μｍ以上でかつ該凹凸形成粒子の個数平均粒径より小さい平均粒径を有する導電性無機粒子を含有することを特徴とする現像剤担持体。 In a developer carrier used in a developing device that develops an electrostatic latent image formed on an electrostatic latent image carrier with a one-component developer carried on a developer carrier and forms a toner image. The developer carrier has at least a substrate and a conductive resin coating layer formed on the surface of the substrate,
Conductive resin coating layer of at least (a) binder resins, the number average particle diameter of at least its surface made of carbonaceous for forming irregularities on the (b) conductive resin coating layer is 3~30μm And (c) conductive inorganic particles having a Mohs hardness of 6 or more, a number average particle size of 2 μm or more, and an average particle size smaller than the number average particle size of the unevenness-forming particles. A developer carrier. 該導電性樹脂被覆層が、更に（ｄ）荷電制御剤を含有することを特徴とする請求項１に記載の現像剤担持体。 The developer carrying member according to claim 1, wherein the conductive resin coating layer further contains (d) a charge control agent. 該樹脂被覆層中に、さらに（ｅ）モース硬度６以上であり、個数平均粒径が２μｍ以上であり、該凹凸形成粒子の個数平均粒径より小さい平均粒径を有する絶縁性無機粒子を含有することを特徴とする請求項１又は２に記載の現像剤担持体。 The resin coating layer further includes (e) insulating inorganic particles having a Mohs hardness of 6 or more, a number average particle size of 2 μm or more, and an average particle size smaller than the number average particle size of the unevenness forming particles. The developer carrying member according to claim 1, wherein the developer carrying member is provided. 少なくとも現像剤を収容する容器と、該容器に貯蔵された現像剤を担持搬送する現像剤担持体を有し、現像剤規制部材により該現像剤担持体上に現像剤層を形成しながら現像剤担持体上の現像剤を静電潜像担持体と対向する現像領域へと搬送し、該静電潜像担持体の静電潜像を現像剤により現像し、トナー像を形成する現像装置において、
該現像剤担持体は、少なくとも基体および該基体表面に形成された導電性樹脂被覆層を有し、
該導電性樹脂被覆層は少なくとも（ａ）結着樹脂、（ｂ）該導電性樹脂被覆層に凹凸を形成させるための少なくともその表面が炭素質からなる個数平均粒径が３〜３０μｍである粒子、および、（ｃ）モース硬度が６以上であり、個数平均粒径が２μｍ以上でかつ該凹凸形成粒子の個数平均粒径より小さい平均粒径を有する導電性無機粒子を含有することを特徴とする現像装置。 A developer containing at least a developer container and a developer carrier for carrying and transporting the developer stored in the container, and forming a developer layer on the developer carrier by a developer regulating member; In a developing device for transporting a developer on a carrier to a developing region facing the electrostatic latent image carrier, developing the electrostatic latent image on the electrostatic latent image carrier with a developer, and forming a toner image ,
The developer carrier has at least a substrate and a conductive resin coating layer formed on the surface of the substrate,
Conductive resin coating layer of at least (a) binder resins, the number average particle diameter of at least its surface made of carbonaceous for forming irregularities on the (b) conductive resin coating layer is 3~30μm And (c) conductive inorganic particles having a Mohs hardness of 6 or more, a number average particle size of 2 μm or more, and an average particle size smaller than the number average particle size of the unevenness-forming particles. A developing device. 該現像剤担持体は、請求項２又は３に記載の現像剤担持体である請求項４に記載の現像装置。 Developer carrying member, a developing device according to claim 4, which is a developer carrying member according to claim 2 or 3.
JP2003377044A 2003-11-06 2003-11-06 Developer carrying member and developing device using the same Expired - Fee Related JP4280604B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003377044A JP4280604B2 (en) 2003-11-06 2003-11-06 Developer carrying member and developing device using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003377044A JP4280604B2 (en) 2003-11-06 2003-11-06 Developer carrying member and developing device using the same

Publications (3)

Publication Number Publication Date
JP2005140975A JP2005140975A (en) 2005-06-02
JP2005140975A5 true JP2005140975A5 (en) 2006-12-07
JP4280604B2 JP4280604B2 (en) 2009-06-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003377044A Expired - Fee Related JP4280604B2 (en) 2003-11-06 2003-11-06 Developer carrying member and developing device using the same

Country Status (1)

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JP (1) JP4280604B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4662249B2 (en) * 2005-06-13 2011-03-30 株式会社ブリヂストン Developing roller
JP5489780B2 (en) * 2010-02-26 2014-05-14 キヤノン株式会社 Development method
JP5828752B2 (en) * 2011-12-08 2015-12-09 キヤノン株式会社 Charging member and method of manufacturing charging member
JP5989581B2 (en) * 2013-03-19 2016-09-07 信越ポリマー株式会社 Elastic roller, developing device and image forming apparatus
JP7483453B2 (en) 2019-04-18 2024-05-15 キヤノン株式会社 Image forming apparatus and process cartridge

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