JP2007279588A5 - - Google Patents
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- Publication number
- JP2007279588A5 JP2007279588A5 JP2006108792A JP2006108792A JP2007279588A5 JP 2007279588 A5 JP2007279588 A5 JP 2007279588A5 JP 2006108792 A JP2006108792 A JP 2006108792A JP 2006108792 A JP2006108792 A JP 2006108792A JP 2007279588 A5 JP2007279588 A5 JP 2007279588A5
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- developer
- magnetic
- replenishment
- toner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000969 carrier Substances 0.000 claims 24
- 239000011347 resin Substances 0.000 claims 9
- 229920005989 resin Polymers 0.000 claims 9
- 239000011247 coating layer Substances 0.000 claims 4
- 239000002245 particle Substances 0.000 claims 4
- 125000004432 carbon atoms Chemical group C* 0.000 claims 2
- 229920001577 copolymer Polymers 0.000 claims 2
- 239000010419 fine particle Substances 0.000 claims 2
- 239000000696 magnetic material Substances 0.000 claims 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 230000036909 Volume distribution Effects 0.000 claims 1
- 239000011230 binding agent Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 230000002209 hydrophobic Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 239000000178 monomer Substances 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 230000000379 polymerizing Effects 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000003068 static Effects 0.000 claims 1
Claims (8)
該磁性キャリアは、磁性体を有するキャリアコアと該キャリアコアの表面に樹脂被覆層とを有する磁性キャリア粒子を有する磁性キャリアであって、
該トナーは、平均円形度が０．９３０以上１．０００以下であり、
該磁性キャリアは、平均円形度が０．８５０以上０．９５０以下であり、かつ、水に対する接触角が９５°以上であり、
該樹脂被覆層を形成している樹脂は、式（Ａ１）
で示される構造を有するモノマーとメタクリル酸メチルモノマーとを重合した共重合体であり、
該共重合体は、これらのモノマーから形成されるユニットが共重合割合として８０質量％以上含有されており、かつ、６５℃以上のガラス転移温度を有することを特徴とする補給用現像剤。 A replenishment developer having 200 to 5000 parts by mass of toner with respect to 100 parts by mass of a magnetic carrier,
The magnetic carrier is a magnetic carrier having a carrier core having a magnetic material and magnetic carrier particles having a resin coating layer on the surface of the carrier core,
The toner has an average circularity of 0.930 to 1.000,
The magnetic carrier has an average circularity of 0.850 or more and 0.950 or less, and a contact angle with water of 95 ° or more,
The resin forming the resin coating layer has the formula (A1)
Is a copolymer obtained by polymerizing a monomer having a structure represented by
The replenishing developer, wherein the copolymer contains a unit formed from these monomers in a proportion of 80% by mass or more and has a glass transition temperature of 65 ° C. or more.
該被覆樹脂層を形成している樹脂が、キャリアコア１００質量部に対して０．３質量部以上４．０質量部以下含有されており、
該磁性キャリアは、体積分布基準の５０％粒径（Ｄ５０）が１５μｍ以上７０μｍ以下であることを特徴とする請求項１乃至３のいずれかに記載の補給用現像剤。 The resin coating layer has fine particles having a maximum peak particle diameter of 80 nm or more and 600 nm or less in a particle size distribution on the basis of number;
The resin forming the coating resin layer is contained in an amount of 0.3 to 4.0 parts by mass with respect to 100 parts by mass of the carrier core,
The replenishment developer according to any one of claims 1 to 3 , wherein the magnetic carrier has a 50% particle size (D50) based on a volume distribution of 15 µm or more and 70 µm or less.
該磁気ブラシが、磁性キャリア１００質量部に対して、トナーを５質量部以上２０質量部以下有し、
補給用現像剤を現像器に補給し、現像器内部で過剰になった磁性キャリアを現像器から排出し、
該補給用現像剤が、請求項１乃至６のいずれかに記載の補給用現像剤であることを特徴とする画像形成方法。 An electrostatic charge image is formed on the electrostatic charge image carrier, a magnetic brush is formed from toner and a magnetic carrier on the developer carrier that contains the magnetic field generating means, and the magnetic brush formed on the developer carrier is used for static electricity. An image forming method for developing a charge image to form a toner image on the electrostatic charge image carrier,
The magnetic brush has 5 to 20 parts by mass of toner with respect to 100 parts by mass of the magnetic carrier,
Replenish the developer for replenishment to the developer unit, discharge the excess magnetic carrier inside the developer unit from the developer unit,
Image forming method, wherein the replenishment developer is a replenishing developer according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006108792A JP2007279588A (en) | 2006-04-11 | 2006-04-11 | Developer for replenishment and image forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006108792A JP2007279588A (en) | 2006-04-11 | 2006-04-11 | Developer for replenishment and image forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007279588A JP2007279588A (en) | 2007-10-25 |
| JP2007279588A5 true JP2007279588A5 (en) | 2008-04-17 |
Family
ID=38681074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006108792A Pending JP2007279588A (en) | 2006-04-11 | 2006-04-11 | Developer for replenishment and image forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2007279588A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5106308B2 (en) * | 2008-03-06 | 2012-12-26 | キヤノン株式会社 | Magnetic carrier and two-component developer |
| JP5517471B2 (en) | 2008-03-11 | 2014-06-11 | キヤノン株式会社 | Two-component developer |
| JP5174568B2 (en) * | 2008-07-17 | 2013-04-03 | 京セラドキュメントソリューションズ株式会社 | Developing device and image forming apparatus including the same |
| JP2010276944A (en) * | 2009-05-29 | 2010-12-09 | Kyocera Mita Corp | Image forming method |
| JP5517520B2 (en) * | 2009-07-30 | 2014-06-11 | キヤノン株式会社 | Magnetic carrier, two-component developer and replenishment developer |
| JP5479193B2 (en) * | 2010-04-09 | 2014-04-23 | キヤノン株式会社 | Magnetic carrier and two-component developer |
| JP5581918B2 (en) | 2010-09-09 | 2014-09-03 | 富士ゼロックス株式会社 | Electrostatic charge image developing carrier, electrostatic charge image developing developer, electrostatic charge image developing developer cartridge, process cartridge, image forming apparatus, and image forming method |
| JP5935424B2 (en) * | 2012-03-19 | 2016-06-15 | 富士ゼロックス株式会社 | Electrostatic charge image developing carrier, electrostatic charge image developing developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
| JP5689988B2 (en) * | 2014-01-24 | 2015-03-25 | Ｄｏｗａエレクトロニクス株式会社 | Carrier core material for electrophotographic developer and method for producing the same |
| JP6470588B2 (en) * | 2014-02-27 | 2019-02-13 | キヤノン株式会社 | Magnetic carrier and two-component developer |
| JP6233230B2 (en) * | 2014-07-30 | 2017-11-22 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| JP6222120B2 (en) * | 2015-01-19 | 2017-11-01 | コニカミノルタ株式会社 | Two-component developer for developing electrostatic latent images |
| JP7106956B2 (en) * | 2018-04-10 | 2022-07-27 | 富士フイルムビジネスイノベーション株式会社 | Developer, developer manufacturing method, and image forming apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08248684A (en) * | 1995-03-14 | 1996-09-27 | Konica Corp | Electrostatic image developing carrier and manufacture thereof |
| JP3697167B2 (en) * | 2001-02-28 | 2005-09-21 | キヤノン株式会社 | Replenishment developer, developing method and image forming method |
| JP4136999B2 (en) * | 2004-04-26 | 2008-08-20 | キヤノン株式会社 | Magnetic carrier and two-component developer |
-
2006
- 2006-04-11 JP JP2006108792A patent/JP2007279588A/en active Pending
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