JP2005077869A5 - - Google Patents

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Publication number
JP2005077869A5
JP2005077869A5 JP2003309531A JP2003309531A JP2005077869A5 JP 2005077869 A5 JP2005077869 A5 JP 2005077869A5 JP 2003309531 A JP2003309531 A JP 2003309531A JP 2003309531 A JP2003309531 A JP 2003309531A JP 2005077869 A5 JP2005077869 A5 JP 2005077869A5
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JP
Japan
Prior art keywords
developer carrier
graphitized particles
particles
volume average
developer
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JP2003309531A
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Japanese (ja)
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JP4250485B2 (en
JP2005077869A (en
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Priority to JP2003309531A priority Critical patent/JP4250485B2/en
Priority claimed from JP2003309531A external-priority patent/JP4250485B2/en
Publication of JP2005077869A publication Critical patent/JP2005077869A/en
Publication of JP2005077869A5 publication Critical patent/JP2005077869A5/ja
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Publication of JP4250485B2 publication Critical patent/JP4250485B2/en
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Expired - Fee Related legal-status Critical Current

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Claims (5)

潜像担持体上に形成された潜像を現像剤担持体に担持搬送された現像剤により現像し、可視像化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基体表面に形成された導電性被覆層を有し、該導電性被覆層は、結着樹脂、結着樹脂中に分散された黒鉛化粒子を少なくとも含有しており、該黒鉛化粒子は、黒鉛化度Ｐ（００２）が０．２０≦Ｐ（００２）≦０．９５であり、さらに、該黒鉛化粒子の体積平均粒径が０．５〜４．０μｍ、体積平均における１０μｍ以上の粒子の存在割合が５．０％以下であることを特徴とする現像剤担持体。 In the developer carrier used in the developing device that develops the latent image formed on the latent image carrier with the developer carried on the developer carrier and visualizes the latent image,
The developer carrier has at least a substrate and a conductive coating layer formed on the substrate surface, and the conductive coating layer contains at least a binder resin and graphitized particles dispersed in the binder resin. The graphitized particles have a graphitization degree P (002) of 0.20 ≦ P (002) ≦ 0.95, and the graphitized particles have a volume average particle size of 0.5 to 4. A developer carrier having an existence ratio of particles of 0 μm and a volume average of 10 μm or more in a volume average of 5.0% or less. 該黒鉛化粒子の体積平均粒径と黒鉛化度Ｐ（００２）との関係が下記式を満たすことを特徴とする請求項１に記載の現像剤担持体。
−０．０４６４ｌｎ（Ｘ）＋０．３１４３≦Ｙ≦−０．０４６４ｌｎ（Ｘ）
＋０．７６４３
０．５≦Ｘ≦４．０
［式中、Ｘは黒鉛化粒子の体積平均径（μｍ）、Ｙは黒鉛化粒子の黒鉛化度Ｐ（００２）］ The developer carrier according to claim 1, wherein the relationship between the volume average particle diameter of the graphitized particles and the degree of graphitization P (002) satisfies the following formula.
−0.0464ln (X) + 0.3143 ≦ Y ≦ −0.0464ln (X)
+0.7643
0.5 ≦ X ≦ 4.0
[Wherein, X is the volume average diameter of the graphitized particles (μm), Y is the degree of graphitization of the graphitized particles P (002)] 該黒鉛化粒子はバルクメソフェーズピッチまたはメソカーボンマイクロビーズ粒子を黒鉛化して得られたものであ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。 3. The developer carrier according to claim 1, wherein the graphitized particles are obtained by graphitizing bulk mesophase pitch or mesocarbon microbead particles . 該黒鉛化粒子がバルクメソフェーズピッチまたはメソカーボンマイクロビーズを不活性雰囲気下において２０００〜３５００℃で焼成することにより得られたものであることを特徴とする請求項３に記載の現像剤担持体。4. The developer carrier according to claim 3, wherein the graphitized particles are obtained by firing bulk mesophase pitch or mesocarbon microbeads at 2000 to 3500 ° C. in an inert atmosphere. 該導電性被覆層が、０．３乃至２．０の中心線平均粗さＲａを有していることを特徴とする請求項１乃至４のいずれかに記載の現像剤担持体。 The conductive coating layer, the developer carrying member according to any one of claims 1 to 4, characterized in that it has a center line average roughness Ra of 0.3 to 2.0.
JP2003309531A 2003-09-02 2003-09-02 Developer carrier Expired - Fee Related JP4250485B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003309531A JP4250485B2 (en) 2003-09-02 2003-09-02 Developer carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003309531A JP4250485B2 (en) 2003-09-02 2003-09-02 Developer carrier

Publications (3)

Publication Number Publication Date
JP2005077869A JP2005077869A (en) 2005-03-24
JP2005077869A5 true JP2005077869A5 (en) 2008-07-10
JP4250485B2 JP4250485B2 (en) 2009-04-08

Family

ID=34411640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003309531A Expired - Fee Related JP4250485B2 (en) 2003-09-02 2003-09-02 Developer carrier

Country Status (1)

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JP (1) JP4250485B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4651095B2 (en) * 2005-08-24 2011-03-16 キヤノン株式会社 Image forming method
WO2007116537A1 (en) * 2006-04-11 2007-10-18 Canon Kabushiki Kaisha Method of development and development apparatus

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