JP5117835B2 - トナーの製造方法及びトナー - Google Patents
トナーの製造方法及びトナー Download PDFInfo
- Publication number
- JP5117835B2 JP5117835B2 JP2007314653A JP2007314653A JP5117835B2 JP 5117835 B2 JP5117835 B2 JP 5117835B2 JP 2007314653 A JP2007314653 A JP 2007314653A JP 2007314653 A JP2007314653 A JP 2007314653A JP 5117835 B2 JP5117835 B2 JP 5117835B2
- Authority
- JP
- Japan
- Prior art keywords
- toner
- latex
- core
- resinate
- shell
- 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.)
- Expired - Fee Related
Links
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Images
Classifications
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- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
- G03G9/0804—Preparation methods whereby the components are brought together in a liquid dispersing medium
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/093—Encapsulated toner particles
- G03G9/09307—Encapsulated toner particles specified by the shell material
- G03G9/09314—Macromolecular compounds
- G03G9/09321—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/093—Encapsulated toner particles
- G03G9/0935—Encapsulated toner particles specified by the core material
- G03G9/09357—Macromolecular compounds
- G03G9/09364—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/093—Encapsulated toner particles
- G03G9/09392—Preparation thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Developing Agents For Electrophotography (AREA)
Description
モノマ混合物(スチレン約630g、n−ブチルアクリレート約140g、βカルボキシエチルアクリレート(β−CEA)約23.3g、および1−ドデカンチオール約5.4g)と、水溶液(DOWFAX 2A1(Dow Chemical製アルキルジフェニルオキシドジスルホネート界面活性剤)約15.3g、および脱イオン水約368g)とを、約300rpmで、約20℃から約25℃の温度で撹拌することにより、モノマエマルジョンを調製した。
対照トナーを、下記の通り調製した。Baker−PetroliteからPOLYWAX 725(登録商標)として市販されているポリエチレンワックス分散液約60g、ピグメントレッド122分散液約85.4g、ピグメントレッド185分散液(ピグメントレッド185はマゼンタ顔料である)約21.3g、脱イオン水約919g、およびカルシウム樹脂酸塩を添加しないこと以外は実施例1で既に述べた手順に従って生成されたポリ(スチレン−コ−n−ブチルアクリレート)ラテックス約265.7gを混合し、約4000rpmで、約20℃から約25℃の温度で均質化した。約3.6gのDelPAC 2000(Delta Chemical Corporationから市販されている硫酸水酸化塩化アルミニウム(aluminum chloride hydroxide sulfate))を0.02N HNO3約32.4gに溶かした溶液を、約3分間均質化しながら混合物に滴下した。添加後、粘性ある混合物を、さらに約5分間連続して均質化した。次いでスラリを、2Lの反応器に移した。反応器を、撹拌速度約350rpmに設定し、加熱浴温度を約65℃に設定した。40分以内で、スラリ温度は約60℃になった。約60℃で約20分間の凝集後、体積による粒度は約5.5ミクロンであった。次いで、シェルラテックス(EP2−26P)約149.3gを、約5分間にわたって反応器に添加した。添加後約15分で、粒度が約6.7ミクロンであった。
実施例1で述べたものと同じ手順を使用して、ラテックス(コア用とシェル用の両方)をカルシウム樹脂酸塩で官能化したこと以外、実施例1で既に述べたものと同じ手順に従って、トナーを調製した。
Claims (6)
- スチレン類、アクリレート類、メタクリレート類、ブタジエン類、イソプレン類、アクリル酸類、メタクリル酸類、アクリロニトリル類、およびこれらの混合物から選択される第1のラテックス、水性着色剤分散液、および任意選択のワックス分散液を接触させて、ブレンドを形成する工程と、
pHを4から7の値にまで上昇させるために、塩基を添加する工程と、
前記第1のラテックスのガラス転移温度よりも低い温度で前記ブレンドを加熱して、凝集トナーコアを形成する工程と、
カルシウム樹脂酸塩、ベリリウム樹脂酸塩、マグネシウム樹脂酸塩、ストロンチウム樹脂酸塩、バリウム樹脂酸塩、ラジウム樹脂酸塩、亜鉛樹脂酸塩、アルミニウム樹脂酸塩、銅樹脂酸塩、鉄樹脂酸塩、およびこれらの組み合わせから選択されるアルカリ樹脂を含む第2のラテックスを、前記凝集トナーコアに添加して、前記凝集トナーコアの表面にシェルを形成し、それによってコア−シェルトナーを形成する工程と、
前記コア−シェルトナーを、前記第1のラテックスのガラス転移温度よりも高い温度で加熱する工程と、
前記トナーを回収する工程と、
を含むことを特徴とするトナーの製造方法。 - 請求項1に記載の方法であって、前記ブレンドの加熱が、30℃から60℃の温度で行われ、前記コア−シェルトナーの加熱が、80℃から120℃の温度で行われることを特徴とするトナーの製造方法。
- 請求項1に記載の方法であって、得られたトナー粒子が、1ミクロンから20ミクロンのサイズ、および0.9から0.99の真円度を有し、前記凝集トナーコアがさらに、アルカリ樹脂を含む官能基を含むことを特徴とするトナーの製造方法。
- 請求項1に記載の方法によって生成されたことを特徴とするトナー。
- スチレン類、アクリレート類、メタクリレート類、ブタジエン類、イソプレン類、アクリル酸類、メタクリル酸類、アクリロニトリル類、およびこれらの混合物から選択される第1のラテックス、水性着色剤分散液、および任意選択のワックス分散液を接触させて、ブレンドを形成する工程と、
pHを4から7の値にまで上昇させるために、塩基を添加する工程と、
前記第1のラテックスのガラス転移温度よりも低い温度で前記ブレンドを加熱して、凝集トナーコアを形成する工程と、
アルカリ樹脂を含む第2のラテックスを、前記凝集トナーコアに添加して、前記凝集トナーコアの表面にシェルを形成し、それによってコア−シェルトナーを形成する工程と、
前記コア−シェルトナーを、前記第1のラテックスのガラス転移温度よりも高い温度で加熱する工程と、
前記トナーを回収する工程と、
を含み、
前記アルカリ樹脂が、
- 請求項5に記載の方法であって、Mは、カルシウムイオンであることを特徴とするトナーの製造方法。
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US11/636,214 | 2006-12-08 | ||
US11/636,214 US7553601B2 (en) | 2006-12-08 | 2006-12-08 | Toner compositions |
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JP5117835B2 true JP5117835B2 (ja) | 2013-01-16 |
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US7691552B2 (en) * | 2006-08-15 | 2010-04-06 | Xerox Corporation | Toner composition |
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US7727696B2 (en) * | 2006-12-08 | 2010-06-01 | Xerox Corporation | Toner compositions |
US20100092886A1 (en) | 2008-10-10 | 2010-04-15 | Xerox Corporation | Toner compositions |
US8580469B2 (en) * | 2011-12-15 | 2013-11-12 | Xerox Corporation | Colored toners |
US20140272701A1 (en) * | 2013-03-14 | 2014-09-18 | Xerox Corporation | Toner particle for high speed single component development system |
US9075329B2 (en) * | 2013-03-15 | 2015-07-07 | Xerox Corporation | Emulsion aggregation toners with improved particle size distribution |
US9354531B2 (en) * | 2014-07-01 | 2016-05-31 | Xerox Corporation | Magenta toner |
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