JP6047042B2 - トナー組成物、エマルジョン凝集トナー組成物、及びトナー組成物を調整するためのエマルジョン凝集手順 - Google Patents
トナー組成物、エマルジョン凝集トナー組成物、及びトナー組成物を調整するためのエマルジョン凝集手順 Download PDFInfo
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- JP6047042B2 JP6047042B2 JP2013060358A JP2013060358A JP6047042B2 JP 6047042 B2 JP6047042 B2 JP 6047042B2 JP 2013060358 A JP2013060358 A JP 2013060358A JP 2013060358 A JP2013060358 A JP 2013060358A JP 6047042 B2 JP6047042 B2 JP 6047042B2
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- toner
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- cinnamate
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Images
Classifications
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- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08742—Binders for toner particles comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08755—Polyesters
-
- 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
- G03G9/087—Binders for toner particles
- G03G9/08742—Binders for toner particles comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08766—Polyamides, e.g. polyesteramides
-
- 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
- G03G9/087—Binders for toner particles
- G03G9/08742—Binders for toner particles comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08768—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
-
- 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
- G03G9/097—Plasticisers; Charge controlling agents
- G03G9/09733—Organic compounds
Description
以下の式:
15.12gの桂皮酸ジエステル、27.96gのポリエステル樹脂Aおよび27.96gのポリエステル樹脂Bを、約700gの酢酸エチルを含む2リットルビーカー中に測り入れした。この混合物を、室温にて1分間に約300回転で撹拌し、樹脂をジクロロメタン中に溶解した。1.56gの重炭酸ナトリウムおよび4.53gの界面活性剤(DOWFAX(登録商標)2A1、Dow Chemical Company 47wt%)を、約700gの脱イオン水を含む2リットルのPyrex(登録商標)ガラスフラスコリアクタに測り入れた。上記2リットルのフラスコリアクタ内で、IKA Ultra Turrax T50ホモジナイザーを1分間に4,000回転で使用して、この水溶液の均質化を開始した。次いで、この樹脂溶液を、混合物が均質化され続けるように水溶液内にゆっくりと注ぎ、ホモジナイザーの速度を1分間に8,000回転まで上げ、均質化を、これらの条件において約30分間実施した。均質化の完了の際に、ガラスフラスコリアクタおよびその内容物を、加熱マントル内に入れ、蒸留デバイスに接続した。この混合物を、1分間に約200回転で撹拌し、この混合物の温度を、80℃まで、1分間に約1℃ずつ上昇させ、混合物中の酢酸エチルを蒸発させた。この混合物の撹拌を、80℃で約180分間続け、その後、室温まで1分間あたり約2℃ずつ冷却した。生成物を、25ミクロンのふるいに通した。得られた樹脂エマルジョンは、水中約11.08重量%の固体から成った。
オーバーヘッドミキサーを備えた2リットルのガラスリアクタに、230.33gの上記エマルジョン(11.08wt%)(低分子量非晶質樹脂(ポリエステルA)、高分子量非晶質樹脂(ポリエステルB)および桂皮酸ジエステルを含む)、27.47gの結晶質樹脂Cエマルジョン(35.17wt%)、43.15gのポリエチレン蝋分散液(90℃のTm、The International Group,Inc.(IGI))(29.93wt%)および48.77gのシアン色素PB15:3(17.21wt%)を入れた。別個に、2.51gのAl2(SO4)3(27.85wt%)を、凝集剤として1分間に3500回転で均質化しながら添加した。この混合物を、1分間に300回転(rpm)で撹拌し、粒子サイズを、Coulter Counter Dでモニタリングした。室温での凝集剤添加直後粒子サイズは、5.65ミクロン、GSD容積1.32であった。次いで、54.92gの混合物および56.72gのポリエステルAエマルジョン(36.40wt%)およびポリエステルB樹脂(35.25wt%)を、シェル材料として添加し、次いで、このスラリーを41℃まで加熱し、6.41ミクロンの平均粒子サイズ、GSD容積1.23を有するコアシェル構造粒子を得た。その後、反応スラリーのpHを、4wt%のNaOH溶液を用いて8.3まで上げ、その後、4.62gのVersene 100、EDTA(39wt%)を添加して、トナー成長を凍結した。凍結後、合体のために、反応混合物を、78℃まで加熱し、pHをpH5.7酢酸/酢酸ナトリウム(HAc/NaAc)緩衝溶液を用いて、7.74まで低下させた。トナーを合体の後にクエンチし、最終粒子サイズ7.49ミクロン、GDV容積1.23を生じた。次いで、トナースラリーを、室温まで冷まし、ふるい(25ミクロン)、濾過によって分離し、その後洗浄し、最後に凍結乾燥させた。
2種の非晶質ポリエステル樹脂(ポリエステルA、86,000のMwおよび56℃でTg発生;およびポリエステルB、19,400のMwおよび60℃のTg発生)および6.8%結晶質ポリエステルC(23,300のMw、10,500のMnおよび71℃のTm)から成り、桂皮酸ジエステルを含まない、トナーの調製。
Claims (15)
- 前記少なくとも1種の小結晶質分子は、プロパン−1,3−トランス−シンナマート、ブタン−1,4−トランス−シンナマート、ヘキサン−1,6−トランス−シンナマート、またはこれらの混合物である、請求項1に記載のトナー組成物。
- 前記少なくとも1種の小結晶質分子は、乾燥重量ベースで前記トナー粒子の約50重量%までの量で存在する、請求項1に記載のトナー組成物。
- 前記少なくとも1種の小結晶質分子と前記少なくとも1種の非晶質ポリエステル樹脂との混合物は、約1.0mW未満の結晶化のエンタルピーを示す、請求項1に記載のトナー組成物。
- 前記トナー粒子は、約3から約25μmまでのサイズである、請求項1に記載のトナー組成物。
- トナー粒子を含むエマルジョン凝集トナー組成物であって、前記トナー粒子は、以下:
少なくとも1種の小結晶質分子;
少なくとも1種の非晶質ポリエステル樹脂;および
必要に応じて、蝋、共凝集剤、色素およびそれらの組み合わせからなる群より選択される1種以上の成分
を含み、
ここで、前記少なくとも1種の小結晶質分子は、以下の一般式を有する1種以上のトランス−桂皮酸ジエステルである:
ここで、2つ以上の置換基は、互いに結合して環を形成し得る、前記エマルジョン凝集トナー組成物。 - 前記少なくとも1種の小結晶質分子は、プロパン−1,3−トランス−シンナマート、ブタン−1,4−トランス−シンナマート、ヘキサン−1,6−トランス−シンナマート、またはこれらの混合物である、請求項6に記載のトナー組成物。
- 前記少なくとも1種の小結晶質分子は、乾燥重量ベースで前記トナー粒子の約50重量%までの量で存在する、請求項6に記載のトナー組成物。
- 前記少なくとも1種の非晶質ポリエステル樹脂は、さらに、乾燥重量ベースで前記トナー粒子の1重量%から30重量%までの量で結晶質ポリエステル樹脂を含む、請求項6に記載のトナー組成物。
- 前記トナー粒子は、約3から約25μmまでのサイズである、請求項6に記載のトナー組成物。
- 請求項1に記載のトナー組成物を調整するためのエマルジョン凝集手順であって、以下:
少なくとも1種の非晶質ポリエステル樹脂を少なくとも1種の小結晶質分子に混合物中で接触させること;および
前記混合物に、蝋、共凝集剤、色素およびそれらの組み合わせからなる群より選択される1種以上の成分を接触させて、トナー粒子を形成させること
を含み、
ここで、前記少なくとも1種の小結晶質分子は、以下の一般式を有する1種以上のトランス−桂皮酸ジエステルである:
ここで、2つ以上の置換基は、互いに結合して環を形成し得る、前記手順。 - 前記少なくとも1種の非晶質ポリエステル樹脂および少なくとも1種の小結晶質分子の混合物ならびに1種以上の成分を凝集させて、コア粒子を形成すること;
前記コア粒子を前記少なくとも1種の非晶質ポリエステル樹脂を含むエマルジョンと接触させて、前記粒子の周りにシェルを形成させること;および
前記粒子を合体して、トナー粒子を形成すること
を含む、請求項11に記載の手順。 - 前記少なくとも1種の小結晶質分子は、プロパン−1,3−トランス−シンナマート、ブタン−1,4−トランス−シンナマート、ヘキサン−1,6−トランス−シンナマート、またはこれらの混合物である、請求項11に記載の手順。
- 前記少なくとも1種の小結晶質分子は、乾燥重量ベースで前記トナー粒子の約50重量%までの量で存在する、請求項11に記載の手順。
- 前記少なくとも1種の非晶質ポリエステル樹脂は、さらに、乾燥重量ベースで前記トナー粒子の1重量%から30重量%までの量で結晶質ポリエステル樹脂を含む、請求項11に記載の手順。
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