JP2012128176A5 - - Google Patents
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- JP2012128176A5 JP2012128176A5 JP2010279408A JP2010279408A JP2012128176A5 JP 2012128176 A5 JP2012128176 A5 JP 2012128176A5 JP 2010279408 A JP2010279408 A JP 2010279408A JP 2010279408 A JP2010279408 A JP 2010279408A JP 2012128176 A5 JP2012128176 A5 JP 2012128176A5
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Description
このように、POD市場のような高速な印刷において、長期間にわたって高い転写性や高い現像性を維持できる耐久安定性を有し、優れた折り曲げ耐性を持つ画像を出力できるトナーは得られていない。 Thus, in high speed printing as the POD market, have durable stability capable of maintaining a high transferability and high development properties over a long period of time, have toner obtained that can output images having excellent bending resistance Absent.
すなわち本発明は以下のとおりである。
少なくとも結着樹脂、着色剤及びワックスを含有するトナー粒子とシリカ粒子を有するトナーにおいて、該シリカ粒子の個数平均粒径(D1)が0.06μm以上0.20μm以下であり、圧縮度Csが15.0%以上40.0%以下であり、
該トナーは、下記式(1)の関係を満たすことを特徴とするトナー。
1.05≦P1/P2≦2.00 ・・・ 式(1)
[式(1)中、
i)P1=Pa/Pbであり、
ATR法を用い、ATR結晶としてGe、赤外光入射角として45°の条件で測定し得られた該トナーのFT−IRスペクトルにおいて、
2843cm −1 以上2853cm −1 以下の範囲の吸収ピーク強度の最大値から3050cm −1 と2600cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pa”であり、
1713cm −1 以上1723cm −1 以下の範囲の吸収ピーク強度の最大値から1763cm −1 と1630cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pb”であり、
ii)P2=Pc/Pdであり、
ATR法を用い、ATR結晶としてKRS5、赤外光入射角として45°の条件で測定し得られた該トナーのFT−IRスペクトルにおいて、
2843cm −1 以上2853cm −1 以下の範囲の吸収ピーク強度の最大値から3050cm −1 と2600cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pc”であり、
1713cm −1 以上1723cm −1 以下の範囲の吸収ピーク強度の最大値から1763cm −1 と1630cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pd”である。]
That is, the present invention is as follows.
In a toner having toner particles containing at least a binder resin, a colorant, and wax and silica particles, the number average particle diameter (D1) of the silica particles is 0.06 μm or more and 0.20 μm or less, and the degree of compression Cs is 15 0.0% or more and 40.0% or less,
The toner is the toner according to satisfy the relationship below following formula (1).
1.05 ≦ P1 / P2 ≦ 2.00 Formula (1)
[In Formula (1),
i) P1 = Pa / Pb
In the FT-IR spectrum of the toner obtained by measurement under the conditions of Ge as an ATR crystal and an infrared light incident angle of 45 ° using the ATR method,
Is a value obtained by subtracting the mean value of the absorption peak intensity of 2843cm -1 or 2853cm -1 3050cm -1 from the maximum value of the absorption peak intensity of the range and 2600 cm -1, the maximum endothermic peak intensity "Pa",
Is a value obtained by subtracting the mean value of the absorption peak intensity of 1713 cm -1 or 1723cm -1 1763cm -1 from the maximum value of the absorption peak intensity of the range and 1630 cm -1, the maximum endothermic peak intensity "Pb",
ii) P2 = Pc / Pd,
In the FT-IR spectrum of the toner obtained by measurement under the conditions of KRS5 as the ATR crystal and 45 ° as the infrared light incident angle using the ATR method,
Is a value obtained by subtracting the mean value of the absorption peak intensity of 2843cm -1 or 2853cm -1 3050cm -1 from the maximum value of the absorption peak intensity of the range and 2600 cm -1, the maximum endothermic peak intensity "Pc",
Is a value obtained by subtracting the mean value of the absorption peak intensity of 1713 cm -1 or 1723cm -1 1763cm -1 from the maximum value of the absorption peak intensity of the range and 1630 cm -1, the maximum endothermic peak intensity is "Pd". ]
本発明では、トナー表面から約0.3μmの間にワックスを多く存在させることにより、転写工程におけるドット再現性の低下を抑制することができる。
転写工程においては、像担持体や中間転写体上に顕像化されたトナー像に転写圧をかけることで転写が行なわれる。トナーには、転写部材による剪断力がかかるが、転写圧により圧密されたトナー同士が一定の凝集性を有していない場合、その剪断力によりトナー像が乱れ、ドット再現性が低下する場合がある。
転写圧をかけられたトナーは、トナー粒子表面にシリカ粒子が埋め込まれ、トナー粒子同士がシリカ粒子を介さず直接接触することになる。
ワックスは、結着樹脂に比べ分子量が小さく軟らかく、付着力が強いため、トナー表面近傍(約0.3μmの間)にワックスを多く存在させることにより、圧密されたトナー同士の凝集性を高めることができる。その結果、転写時の剪断力によりトナー像が乱れることによる、ドット再現性の低下を抑制することができる。
In the present invention, the presence of a large amount of wax between about 0.3 μm from the toner surface can suppress a drop in dot reproducibility in the transfer process.
In the transfer step, transfer is performed by applying a transfer pressure to the toner image visualized on the image carrier or intermediate transfer member. The toner is subjected to a shearing force by the transfer member, but if the toners compacted by the transfer pressure do not have a certain cohesiveness, the toner image may be disturbed by the shearing force and the dot reproducibility may be reduced. is there.
In the toner subjected to the transfer pressure, silica particles are embedded on the surface of the toner particles, and the toner particles come into direct contact with each other without the silica particles.
Since wax has a smaller molecular weight than that of the binder resin and is soft and has strong adhesion, the presence of a large amount of wax in the vicinity of the toner surface (between about 0.3 μm) increases the cohesiveness between the compacted toners. Can do. As a result, it is possible to suppress a drop in dot reproducibility due to a toner image being disturbed by a shearing force during transfer.
また、当該構成を採用することで、トナー表面に多く存在するワックスにより、トナー表面からのシリカ粒子の遊離を抑制することができる。一般的に、シリカ粒子は、湿度が異なる環境下においても安定した帯電特性を得るために、シリカ粒子表面をメチルクロロシラン類やシリコーンオイル等によって疎水化処理されている。ワックスは、結着樹脂よりもより疎水性が高く、疎水化処理されたシリカ粒子との親和性が良いため、均一に分散したシリカ粒子をトナー表面に保持することができる。特に、凝集性が低く付着力の弱い大粒径シリカ粒子や、シリカ粒子を付着し難いトナー表面の凸部においても、トナー表面にシリカ粒子を保持することができる。その結果、耐久時においても、高い転写効率を維持することができる。 In addition, by adopting this configuration, the release of silica particles from the toner surface can be suppressed by the wax that is present on the toner surface. In general, silica particles are hydrophobized with methylchlorosilanes, silicone oil, or the like in order to obtain stable charging characteristics even in environments with different humidity. Since the wax is more hydrophobic than the binder resin and has good affinity with the hydrophobized silica particles, the uniformly dispersed silica particles can be held on the toner surface. In particular, the silica particles can be retained on the toner surface even on large-diameter silica particles having low cohesiveness and weak adhesion, or on the convex portion of the toner surface on which the silica particles are difficult to adhere. As a result, high transfer efficiency can be maintained even during durability.
Claims (1)
該シリカ粒子の個数平均粒径(D1)が0.06μm以上0.20μm以下であり、圧縮度Csが15.0%以上40.0%以下であり、
該トナーは、下記式(1)の関係を満たすことを特徴とするトナー。
1.05≦P1/P2≦2.00 ・・・ 式(1)
[式(1)中、
i)P1=Pa/Pbであり、
ATR法を用い、ATR結晶としてGe、赤外光入射角として45°の条件で測定し得られた該トナーのFT−IRスペクトルにおいて、
2843cm −1 以上2853cm −1 以下の範囲の吸収ピーク強度の最大値から3050cm −1 と2600cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pa”であり、
1713cm −1 以上1723cm −1 以下の範囲の吸収ピーク強度の最大値から1763cm −1 と1630cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pb”であり、
ii)P2=Pc/Pdであり、
ATR法を用い、ATR結晶としてKRS5、赤外光入射角として45°の条件で測定し得られた該トナーのFT−IRスペクトルにおいて、
2843cm −1 以上2853cm −1 以下の範囲の吸収ピーク強度の最大値から3050cm −1 と2600cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pc”であり、
1713cm −1 以上1723cm −1 以下の範囲の吸収ピーク強度の最大値から1763cm −1 と1630cm −1 の吸収ピーク強度の平均値を差し引いた値である、最大吸熱ピーク強度が“Pd”である。] In a toner having silica particles and toner particles containing at least a binder resin, a colorant and a wax,
The number average particle diameter (D1) of the silica particles is 0.06 μm or more and 0.20 μm or less, and the degree of compression Cs is 15.0% or more and 40.0% or less,
The toner is the toner according to satisfy the relationship below following formula (1).
1.05 ≦ P1 / P2 ≦ 2.00 Formula (1)
[In Formula (1),
i) P1 = Pa / Pb
In the FT-IR spectrum of the toner obtained by measurement under the conditions of Ge as an ATR crystal and an infrared light incident angle of 45 ° using the ATR method,
Is a value obtained by subtracting the mean value of the absorption peak intensity of 2843cm -1 or 2853cm -1 3050cm -1 from the maximum value of the absorption peak intensity of the range and 2600 cm -1, the maximum endothermic peak intensity "Pa",
Is a value obtained by subtracting the mean value of the absorption peak intensity of 1713 cm -1 or 1723cm -1 1763cm -1 from the maximum value of the absorption peak intensity of the range and 1630 cm -1, the maximum endothermic peak intensity "Pb",
ii) P2 = Pc / Pd,
In the FT-IR spectrum of the toner obtained by measurement under the conditions of KRS5 as the ATR crystal and 45 ° as the infrared light incident angle using the ATR method,
Is a value obtained by subtracting the mean value of the absorption peak intensity of 2843cm -1 or 2853cm -1 3050cm -1 from the maximum value of the absorption peak intensity of the range and 2600 cm -1, the maximum endothermic peak intensity "Pc",
Is a value obtained by subtracting the mean value of the absorption peak intensity of 1713 cm -1 or 1723cm -1 1763cm -1 from the maximum value of the absorption peak intensity of the range and 1630 cm -1, the maximum endothermic peak intensity is "Pd". ]
Priority Applications (1)
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JP2010279408A JP5615156B2 (en) | 2010-12-15 | 2010-12-15 | toner |
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JP2010279408A JP5615156B2 (en) | 2010-12-15 | 2010-12-15 | toner |
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JP2012128176A JP2012128176A (en) | 2012-07-05 |
JP2012128176A5 true JP2012128176A5 (en) | 2014-01-30 |
JP5615156B2 JP5615156B2 (en) | 2014-10-29 |
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Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
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US20140329176A1 (en) * | 2013-05-01 | 2014-11-06 | Canon Kabushiki Kaisha | Toner and image forming method |
JP2015079166A (en) * | 2013-10-18 | 2015-04-23 | キヤノン株式会社 | Production method of toner |
JP6270467B2 (en) * | 2013-12-26 | 2018-01-31 | キヤノン株式会社 | toner |
JP2016071346A (en) * | 2014-09-29 | 2016-05-09 | キヤノン株式会社 | Developer supply cartridge |
JP6910805B2 (en) * | 2016-01-28 | 2021-07-28 | キヤノン株式会社 | Toner, image forming apparatus and image forming method |
JP6648547B2 (en) * | 2016-02-10 | 2020-02-14 | 富士ゼロックス株式会社 | Electrostatic image developer, developer cartridge, process cartridge, image forming apparatus, and image forming method |
US9885966B2 (en) * | 2016-02-10 | 2018-02-06 | Fuji Xerox Co., Ltd. | Electrostatic charge image developing toner, electrostatic charge image developer and toner cartridge |
JP6750241B2 (en) * | 2016-02-10 | 2020-09-02 | 富士ゼロックス株式会社 | Toner for developing electrostatic image, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP6645235B2 (en) * | 2016-02-10 | 2020-02-14 | 富士ゼロックス株式会社 | Electrostatic image developing toner, electrostatic image developing developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP6527829B2 (en) * | 2016-02-10 | 2019-06-05 | 富士ゼロックス株式会社 | Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP6610317B2 (en) * | 2016-02-10 | 2019-11-27 | 富士ゼロックス株式会社 | Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP6642076B2 (en) * | 2016-02-10 | 2020-02-05 | 富士ゼロックス株式会社 | Electrostatic image developing toner, electrostatic image developing developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP6642077B2 (en) * | 2016-02-10 | 2020-02-05 | 富士ゼロックス株式会社 | Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP6610316B2 (en) * | 2016-02-10 | 2019-11-27 | 富士ゼロックス株式会社 | Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP2017142397A (en) | 2016-02-10 | 2017-08-17 | 富士ゼロックス株式会社 | Toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP6645234B2 (en) * | 2016-02-10 | 2020-02-14 | 富士ゼロックス株式会社 | Electrostatic image developer, developer cartridge, process cartridge, image forming apparatus, and image forming method |
US10061216B2 (en) | 2016-02-10 | 2018-08-28 | Fuji Xerox Co., Ltd. | Electrostatic image developer and toner, electrostatic image developer and toner cartridge |
JP6658044B2 (en) * | 2016-02-10 | 2020-03-04 | 富士ゼロックス株式会社 | Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
JP2017223945A (en) * | 2016-06-09 | 2017-12-21 | キヤノン株式会社 | toner |
JP2018049239A (en) * | 2016-09-23 | 2018-03-29 | 富士ゼロックス株式会社 | Toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11149173A (en) * | 1997-11-17 | 1999-06-02 | Canon Inc | Developing method |
JP2004212496A (en) * | 2002-12-27 | 2004-07-29 | Nippon Aerosil Co Ltd | Mixed particles |
JP2005031159A (en) * | 2003-07-07 | 2005-02-03 | Ricoh Co Ltd | Dry toner |
JP4067108B2 (en) * | 2006-01-30 | 2008-03-26 | 株式会社アイメックス | Method for producing toner for developing electrostatic image |
JP5078059B2 (en) * | 2006-04-04 | 2012-11-21 | 株式会社アイメックス | Method for producing toner for developing electrostatic image |
JP4765760B2 (en) * | 2006-05-11 | 2011-09-07 | 富士ゼロックス株式会社 | Electrostatic latent image developing toner and image forming method |
JP2009237166A (en) * | 2008-03-26 | 2009-10-15 | Fuji Xerox Co Ltd | Toner for electrostatic charge image development and method for manufacturing the same, developer for electrostatic charge image development, toner cartridge, process cartridge, and image forming apparatus |
JP5300295B2 (en) * | 2008-03-26 | 2013-09-25 | キヤノン株式会社 | Toner and toner production method |
WO2009123329A1 (en) * | 2008-03-31 | 2009-10-08 | キヤノン株式会社 | Toner and image formation method |
JP5374171B2 (en) * | 2009-01-22 | 2013-12-25 | サカタインクス株式会社 | Nonmagnetic one-component negatively chargeable toner manufacturing method and nonmagnetic one-component negatively chargeable toner |
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2010
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