JP2011209313A5

JP2011209313A5 -

Info

Publication number: JP2011209313A5
Application number: JP2010073721A
Authority: JP
Filing date: 2010-03-26
Publication date: 2013-05-09
Anticipated expiration: 2030-03-26

Description

上記課題は、以下の手段により解決される。即ち、
請求項１に係る発明は、
結着樹脂と、硫黄元素と、Ｍｇ元素と、を含有するトナー粒子を有し、
前記トナー粒子に含有される硫黄元素の蛍光Ｘ線（ＸＲＦ）分析によるＮｅｔ強度をＣｓ（ｋｃｐｓ）、前記トナー粒子に含有されるＭｇ元素の蛍光Ｘ線（ＸＲＦ）分析によるＮｅｔ強度をＣｍ（ｋｃｐｓ）としたとき、下記関係式（１）及び（２）を満たす静電潜像現像用トナー。
関係式（１）：０．２＜Ｃｍ＜０．４
関係式（２）：４．５＜Ｃｓ／Ｃｍ＜５．５ The above problem is solved by the following means. That is,
The invention according to claim 1
Having toner particles containing a binder resin, a sulfur element, and a Mg element ;
Cs (kcps) represents the Net intensity of the sulfur element contained in the toner particles by X-ray fluorescence (XRF) analysis, and Cm (kcps) represents the Net intensity of the Mg element contained in the toner particles by X-ray fluorescence (XRF) analysis. ), An electrostatic latent image developing toner that satisfies the following relational expressions (1) and (2).
Relational expression (1): 0.2 <Cm <0.4
Relational expression (2): 4.5 <Cs / Cm <5.5

請求項２に係る発明は、
前記トナー粒子が、３−ヒドロキシ-２，２’−イミノジコハク酸を含有する請求項１に記載の静電潜像現像用トナー。 The invention according to claim 2
The electrostatic latent image developing toner according to claim 1, wherein the toner particles contain 3-hydroxy-2,2′-iminodisuccinic acid.

請求項３に係る発明は、
外添剤として、Ｍｇ元素を含む無機粒子を有する請求項１又は２に記載の静電潜像現像用トナー。 The invention according to claim 3
As the external additive, the electrostatic latent image developing toner of claim 1 or 2 having the inorganic particles containing Mg element.

請求項４に係る発明は、
トナーを低温低湿環境下で攪拌しながら保存した後、さらに高温高湿環境下で攪拌しながら保存したとき、トナーの前記高温高湿環境下での保存前後における前記トナーの水分率変化量が０．１質量％以上１．０質量％以下である請求項１〜３のいずれか１項に記載の静電潜像現像用トナー。 The invention according to claim 4
When the toner is stored with stirring in a low temperature and low humidity environment, and further stored with stirring in a high temperature and high humidity environment, the amount of change in the moisture content of the toner before and after storage in the high temperature and high humidity environment is 0. The toner for developing an electrostatic latent image according to any one of claims 1 to 3 , wherein the toner is 1% by mass or more and 1.0% by mass or less.

請求項５に係る発明は、
請求項１〜４のいずれか１項に記載の静電潜像現像用トナーを含む静電潜像現像用現像剤。 The invention according to claim 5
An electrostatic latent image developer comprising the toner for electrostatic latent image development according to any one of claims 1-4.

請求項６に係る発明は、
請求項１〜４のいずれか１項に記載の静電潜像現像用トナーが収納されたトナーカートリッジ。 The invention according to claim 6
An electrostatic latent image toner cartridge developing toner is accommodated according to any one of claims 1-4.

請求項７に係る発明は、
請求項５に記載の静電荷現像用現像剤を収容し、前記静電荷現像用現像剤により、像保持体上に形成された静電荷像をトナー像として現像する現像手段を備え、
画像形成装置に脱着されるプロセスカートリッジ。 The invention according to claim 7 provides:
A developer for accommodating the developer for developing an electrostatic charge according to claim 5 and developing the electrostatic image formed on the image carrier as a toner image by the developer for developing an electrostatic charge,
A process cartridge that is detachable from the image forming apparatus.

請求項８に係る発明は、
像保持体と、
前記像保持体を帯電する帯電手段と、
帯電した前記像保持体の表面に静電荷像を形成する静電荷像形成手段と、
請求項５に記載の静電荷現像用現像剤を収容し、前記静電荷現像用現像剤により、前記像保持体上に形成された前記静電荷像をトナー像として現像する現像手段と、
前記像保持体上に形成された前記トナー像を被転写体上に転写する転写手段と、
前記被転写体上に転写された前記トナー像を定着する定着手段と、
を有する画像形成装置。 The invention according to claim 8 provides:
An image carrier,
Charging means for charging the image carrier;
An electrostatic charge image forming means for forming an electrostatic charge image on the surface of the charged image carrier;
Development means for containing the electrostatic charge developing developer according to claim 5 and developing the electrostatic image formed on the image carrier as a toner image by the electrostatic charge developing developer;
Transfer means for transferring the toner image formed on the image carrier onto a transfer target;
Fixing means for fixing the toner image transferred onto the transfer target;
An image forming apparatus.

請求項１に係る発明によれば、硫黄元素とＭｇ元素とにおける蛍光Ｘ線（ＸＲＦ）分析によるＮｅｔ強度の関係が上記関係式（１）及び（２）を満たさない場合に比べ、色点の発生を抑制した画像が得られる。
請求項１に係る発明によれば、トナー粒子がＡｌを含む場合に比べ、色点の発生を抑制した画像が得られる。
請求項２に係る発明によれば、トナー粒子が３−ヒドロキシ-２，２’−イミノジコハク酸を含有しない場合に比べ、耐久性が向上した画像が得られる。
請求項３に係る発明によれば、外添剤として、Ｍｇ元素を持たない無機粒子を有する場合に比べ、色点の発生を抑制した画像が得られる。
請求項４に係る発明によれば、トナーの水分変化率が上記範囲外に比べ、色点の発生を抑制した画像が得られる。
請求項５、６、７、８に係る発明によれば、硫黄元素とＭｇ元素とにおける蛍光Ｘ線（ＸＲＦ）分析によるＮｅｔ強度の関係が上記関係式（１）及び（２）を満たさないトナーを適用した場合に比べ、色点の発生を抑制した画像が得られる。 According to the first aspect of the present invention, compared to the case where the relationship of the Net intensity by the X-ray fluorescence (XRF) analysis between the sulfur element and the Mg element does not satisfy the relational expressions (1) and (2), An image with suppressed generation is obtained.
According to the first aspect of the present invention, an image in which the generation of color points is suppressed can be obtained as compared with the case where the toner particles contain Al.
According to the second aspect of the present invention, an image having improved durability can be obtained as compared with the case where the toner particles do not contain 3-hydroxy-2,2′-iminodisuccinic acid.
According to the third aspect of the present invention, an image in which the generation of color points is suppressed can be obtained as compared with the case where the external additive has inorganic particles not containing Mg element .
According to the fourth aspect of the present invention, it is possible to obtain an image in which the color change is suppressed compared to the case where the toner moisture change rate is outside the above range.
According to the fifth , sixth , seventh, and eighth aspects of the invention, the toner in which the relationship of the Net intensity by the fluorescent X-ray (XRF) analysis between the sulfur element and the Mg element does not satisfy the relational expressions (1) and (2) As compared with the case of applying, an image in which the generation of color points is suppressed is obtained.

以下、本発明の実施形態について詳細に説明する。
［静電潜像現像用トナー］
本実施形態に係る静電潜像現像用トナー（以下、単に「トナー」と称する場合がある）は、トナー粒子と、必要に応じて、外添剤と、を有する。
トナー粒子は、結着樹脂と、硫黄元素と、Ａｌ及びＭｇから選ばれる１種の元素と、を含んで構成される。そして、トナー粒子は、硫黄元素の蛍光Ｘ線（ＸＲＦ）分析によるＮｅｔ強度をＣｓ（ｋｃｐｓ）、Ａｌ及びＭｇから選ばれる１種の元素の蛍光Ｘ線（ＸＲＦ）分析によるＮｅｔ強度をＣｍ（ｋｃｐｓ）としたとき、下記関係式（１）及び（２）を満たす。但し、本実施形態に係るトナーは、Ａｌ及びＭｇから選ばれる１種の元素のうち、Ｍｇ元素が含まれるトナー粒子が適用される。
関係式（１）：０．２＜Ｃｍ＜０．４
関係式（２）：４．５＜Ｃｓ／Ｃｍ＜５．５
なお、Ｃｍは、Ａｌ及びＭｇの双方が含まれている場合、その合計のＮｅｔ強度を意味する。 Hereinafter, embodiments of the present invention will be described in detail.
[Electrostatic latent image developing toner]
The electrostatic latent image developing toner according to the present embodiment (hereinafter may be simply referred to as “toner”) includes toner particles and, if necessary, an external additive.
The toner particles include a binder resin, a sulfur element, and one element selected from Al and Mg. The toner particles have a Net intensity measured by fluorescent X-ray (XRF) analysis of sulfur element as Cs (kcps), and a Net intensity determined by fluorescent X-ray (XRF) analysis of one element selected from Al and Mg as Cm (kcps). ), The following relational expressions (1) and (2) are satisfied. However, the toner according to the present embodiment is applied with toner particles containing Mg element out of one element selected from Al and Mg.
Relational expression (1): 0.2 <Cm <0.4
Relational expression (2): 4.5 <Cs / Cm <5.5
In addition, Cm means the total Net intensity | strength, when both Al and Mg are contained.

Claims

Having toner particles containing a binder resin, a sulfur element, and a Mg element ;
Cs (kcps) represents the Net intensity of the sulfur element contained in the toner particles by X-ray fluorescence (XRF) analysis, and Cm (kcps) represents the Net intensity of the Mg element contained in the toner particles by X-ray fluorescence (XRF) analysis. ), An electrostatic latent image developing toner that satisfies the following relational expressions (1) and (2).
Relational expression (1): 0.2 <Cm <0.4
Relational expression (2): 4.5 <Cs / Cm <5.5

The electrostatic latent image developing toner according to claim 1, wherein the toner particles contain 3-hydroxy-2,2′-iminodisuccinic acid.

As the external additive, the electrostatic latent image developing toner according to claim 1 or 2 having the inorganic particles containing Mg element.

When the toner is stored with stirring in a low temperature and low humidity environment, and further stored with stirring in a high temperature and high humidity environment, the amount of change in the moisture content of the toner before and after storage in the high temperature and high humidity environment is 0. The toner for developing an electrostatic latent image according to any one of claims 1 to 3 , wherein the toner is 1% by mass or more and 1.0% by mass or less.

An electrostatic latent image developer comprising the toner for electrostatic latent image development according to any one of claims 1-4.

An electrostatic latent image toner cartridge developing toner is accommodated according to any one of claims 1-4.

A developer for accommodating the developer for developing an electrostatic charge according to claim 5 and developing the electrostatic image formed on the image carrier as a toner image by the developer for developing an electrostatic charge,
A process cartridge that is detachable from the image forming apparatus.

An image carrier,
Charging means for charging the image carrier;
An electrostatic charge image forming means for forming an electrostatic charge image on the surface of the charged image carrier;
Development means for containing the electrostatic charge developing developer according to claim 5 and developing the electrostatic image formed on the image carrier as a toner image by the electrostatic charge developing developer;
Transfer means for transferring the toner image formed on the image carrier onto a transfer target;
Fixing means for fixing the toner image transferred onto the transfer target;
An image forming apparatus.