JP2015175912A5 - - Google Patents
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- JP2015175912A5 JP2015175912A5 JP2014050705A JP2014050705A JP2015175912A5 JP 2015175912 A5 JP2015175912 A5 JP 2015175912A5 JP 2014050705 A JP2014050705 A JP 2014050705A JP 2014050705 A JP2014050705 A JP 2014050705A JP 2015175912 A5 JP2015175912 A5 JP 2015175912A5
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- JP
- Japan
- Prior art keywords
- potential
- particles
- negatively charged
- intermediate layer
- charged toner
- Prior art date
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- 239000007771 core particle Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000010420 shell particle Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 2
Description
本発明は、この知見に基づくものであり、本発明の要旨は以下の通りである。
＜１＞少なくとも結着樹脂および着色剤を含有する静電荷像現像用負帯電トナーであって、該トナーがコア粒子とコア粒子と逆極性を有する中間層および中間層と逆極性を有するシェル粒子からなり、且つ、ｐＨ３に於けるζ電位が下記（Ｉ）乃至（Ｖ）の関係を満足することを特徴とする静電荷像現像用負帯電トナー。
（Ｉ）コア粒子のζ電位：−２０ｍＶ〜−７０ｍＶ
（ＩＩ）中間層形成粒子のζ電位：＋４０ｍＶ〜＋１２０ｍＶ
（ＩＩＩ）シェル粒子のζ電位：−４０ｍＶ〜−１００ｍＶ
（ＩＶ）トナー母粒子のζ電位：−３０ｍＶ〜−９０ｍＶ
（Ｖ）１．０≦トナー母粒子のζ電位／コア粒子のζ電位≦５．０
＜２＞シェル粒子がスルホン酸またはスルホン酸塩構造を有する樹脂を含有することを特徴とする＜１＞に記載の静電荷像現像用負帯電トナー。
＜３＞中間層が４級アンモニウム塩を含有する樹脂からなることを特徴とする ＜１＞乃至＜２＞に記載の静電荷像現像用負帯電トナー。
＜４＞中間層形成粒子のｐＨ１１に於けるζ電位が−２０ｍＶ〜−１００ｍＶであることを特徴とする＜１＞乃至＜３＞に記載の静電荷像現像用負帯電トナー。
＜５＞エステル系ワックスを含有することを特徴とする＜１＞乃至＜４＞に記載の静電荷像現像用負帯電トナー。
The present invention is based on this finding, and the gist of the present invention is as follows.
<1> A negatively charged toner for developing an electrostatic charge image, containing at least a binder resin and a colorant, wherein the toner has a core particle and an intermediate layer having a polarity opposite to that of the core particle, and a shell particle having a polarity opposite to that of the intermediate layer. And a negatively charged toner for developing an electrostatic image, wherein the ζ potential at pH 3 satisfies the following relationships (I) to (V):
(I) ζ potential of core particles: −20 mV to −70 mV
(II) ζ potential of intermediate layer forming particles: +40 mV to +120 mV
(III) ζ potential of shell particles: −40 mV to −100 mV
(IV) ζ potential of toner base particles: −30 mV to −90 mV
(V) 1.0 ≦ ζ potential of toner mother particles / ζ potential of core particles ≦ 5.0
<2> The negatively charged toner for developing an electrostatic charge image according to <1>, wherein the shell particle contains a resin having a sulfonic acid or sulfonate structure.
<3> The negatively charged toner for developing electrostatic images according to <1> or <2>, wherein the intermediate layer is made of a resin containing a quaternary ammonium salt.
<4> The negatively charged toner for developing electrostatic images according to <1> to <3>, wherein the intermediate layer forming particles have a ζ potential at pH 11 of −20 mV to −100 mV.
<5> The negatively charged toner for developing electrostatic images according to <1> to <4>, which contains an ester wax.
Claims (5)
（Ｉ）コア粒子のζ電位：−２０ｍＶ〜−７０ｍＶ
（ＩＩ）中間層形成粒子のζ電位：＋４０ｍＶ〜＋１２０ｍＶ
（ＩＩＩ）シェル粒子のζ電位：−４０ｍＶ〜−１００ｍＶ
（ＩＶ）トナー母粒子のζ電位：−３０ｍＶ〜−９０ｍＶ
（Ｖ）１．０≦トナー母粒子のζ電位／コア粒子のζ電位≦５．０ A negatively charged toner for electrostatic image development containing at least a binder resin and a colorant, the toner comprising a core particle, an intermediate layer having a polarity opposite to that of the core particle, and a shell having a polarity opposite to that of the intermediate layer; A negatively charged toner for developing electrostatic images, wherein the ζ potential at pH 3 satisfies the following relationships (I) to (V):
(I) ζ potential of core particles: −20 mV to −70 mV
(II) ζ potential of intermediate layer forming particles: +40 mV to +120 mV
(III) ζ potential of shell particles: −40 mV to −100 mV
(IV) ζ potential of toner base particles: −30 mV to −90 mV
(V) 1.0 ≦ ζ potential of toner mother particles / ζ potential of core particles ≦ 5.0
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014050705A JP6354224B2 (en) | 2014-03-13 | 2014-03-13 | Negatively charged toner for electrostatic image development |
| PCT/JP2014/072828 WO2015030208A1 (en) | 2013-08-29 | 2014-08-29 | Toner for developing electrostatic images |
| US15/054,965 US9612544B2 (en) | 2013-08-29 | 2016-02-26 | Electrostatic image developing toner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014050705A JP6354224B2 (en) | 2014-03-13 | 2014-03-13 | Negatively charged toner for electrostatic image development |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2015175912A JP2015175912A (en) | 2015-10-05 |
| JP2015175912A5 true JP2015175912A5 (en) | 2017-03-02 |
| JP6354224B2 JP6354224B2 (en) | 2018-07-11 |
Family
ID=54255184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014050705A Active JP6354224B2 (en) | 2013-08-29 | 2014-03-13 | Negatively charged toner for electrostatic image development |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6354224B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017115734A1 (en) | 2015-12-28 | 2017-07-06 | 三菱化学株式会社 | Toner for electrostatic charge image development |
| JP6874365B2 (en) * | 2015-12-28 | 2021-05-19 | 三菱ケミカル株式会社 | Toner for static charge image development |
| JP6489077B2 (en) * | 2016-06-28 | 2019-03-27 | 京セラドキュメントソリューションズ株式会社 | Toner for developing electrostatic latent image and method for producing the same |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170852A (en) * | 1983-03-17 | 1984-09-27 | Canon Inc | Developer for developing electrostatic latent image |
| JPH0261651A (en) * | 1988-08-26 | 1990-03-01 | Nippon Zeon Co Ltd | Production of toner |
| JP2973234B2 (en) * | 1990-02-22 | 1999-11-08 | セイコーエプソン株式会社 | Manufacturing method of microcapsules |
| JP4008217B2 (en) * | 2001-09-18 | 2007-11-14 | 三菱化学株式会社 | Toner for developing electrostatic image and method for producing the same |
| JP4085942B2 (en) * | 2003-09-18 | 2008-05-14 | コニカミノルタビジネステクノロジーズ株式会社 | Resin particles for toner, toner and method for producing the same |
| JP4735308B2 (en) * | 2006-02-10 | 2011-07-27 | 富士ゼロックス株式会社 | Toner for developing electrostatic image and method for producing the same, developer for electrostatic image, and image forming method |
| JP5371407B2 (en) * | 2008-12-16 | 2013-12-18 | キヤノン株式会社 | Toner and toner production method |
| JP5455475B2 (en) * | 2009-07-08 | 2014-03-26 | キヤノン株式会社 | toner |
| WO2012046747A1 (en) * | 2010-10-04 | 2012-04-12 | Canon Kabushiki Kaisha | Toner |
| JP6024140B2 (en) * | 2011-03-31 | 2016-11-09 | 三菱化学株式会社 | Magenta toner for electrostatic image development |
| JP2013008026A (en) * | 2011-06-23 | 2013-01-10 | Toshiba Corp | Capsule toner and manufacturing method thereof |
| JP5480851B2 (en) * | 2011-07-08 | 2014-04-23 | 東芝テック株式会社 | Toner and method for producing the same |
| JP5634470B2 (en) * | 2011-11-21 | 2014-12-03 | 東芝テック株式会社 | Toner and method for producing the same |
-
2014
- 2014-03-13 JP JP2014050705A patent/JP6354224B2/en active Active
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