JP2010060788A5

JP2010060788A5 -

Info

Publication number: JP2010060788A5
Application number: JP2008225715A
Authority: JP
Filing date: 2008-09-03
Publication date: 2011-10-20
Anticipated expiration: 2028-09-03

Description

本発明は、結着樹脂、着色剤、及びワックス成分を含有するトナー粒子と、無機微粉体とを有するトナーであって、
前記トナーに対する微小圧縮試験において、測定温度２５℃で、前記トナー１粒子に負荷速度９．８×１０^-5Ｎ／ｓｅｃで荷重を加え、２．９４×１０^-4Ｎの最大荷重に達したときに得られる変位量（μｍ）を変位量Ｘ₂、前記最大荷重に達した後、前記最大荷重で０．１秒間放置して得られる変位量（μｍ）を最大変位量Ｘ₃、前記０．１秒間放置後、除荷速度９．８×１０^-5Ｎ／ｓｅｃで荷重を減らし、荷重が０Ｎとなったときに得られる変位量（μｍ）を変位量Ｘ₄、前記最大変位量Ｘ₃と変位量Ｘ₄との差を弾性変位量（Ｘ₃−Ｘ₄）としたとき、
｛（Ｘ₃−Ｘ₄）／Ｘ₃｝×１００で表わされる復元率Ｚ（２５）（％）が、
４０≦Ｚ（２５）≦８０
の関係を満足し、
前記最大変位量Ｘ₃の平均値が０．１０μｍ以上０．８０μｍ以下であり、
前記最大変位量Ｘ₃の平均値の±２０％以内に最大変位量Ｘ₃を持つトナーの割合（Ｘ₃存在率）が６５個数％以上１００個数％以下であることを特徴とするトナーに関する。 The present invention is a binder resin, a colorant, and the toner particles having containing a wax component, a toner having an inorganic fine powder,
In microscopic compression test on the toner at a measurement temperature 25 ° C., a load was applied in the toner 1 particles in loading rate 9.8 × 10 ^-5 N / sec, reaching a maximum load of 2.94 × 10 ^-4 N The displacement amount (μm) sometimes obtained is the displacement amount X ₂ , and after reaching the maximum load, the displacement amount (μm) obtained by leaving it at the maximum load for 0.1 second is the maximum displacement amount X ₃ , 0 After leaving for 1 second, the load is reduced at an unloading speed of 9.8 × 10 ⁻⁵ N / sec, and the displacement amount (μm) obtained when the load becomes 0 N is defined as the displacement amount X ₄ , the maximum displacement amount X _When the difference between ₃ and the displacement amount X ₄ is the elastic displacement amount (X ₃ −X ₄ ) ,
The restoration rate Z (25) (% ) represented by {(X ₃ −X ₄ ) / X ₃ } × 100 is
40 ≦ Z (25) ≦ 80
Satisfied with the relationship
The average value of the maximum displacement amount X ₃ is 0.10 μm or more and 0.80 μm or less ,
Toner ratio of toner having the maximum displacement X ₃ within ± 20% on the average value before Symbol maximum displacement X ₃ where (X ₃ existence ratio) is characterized Oh Rukoto below 100% by number or more 65% by number About.

Claims

A binder resin, a colorant, and the toner particles having containing a wax component, a toner having an inorganic fine powder,
In microscopic compression test on the toner at a measurement temperature 25 ° C., a load was applied in the toner 1 particles in loading rate 9.8 × 10 ^-5 N / sec, reaching a maximum load of 2.94 × 10 ^-4 N The displacement amount (μm) sometimes obtained is the displacement amount X ₂ , and after reaching the maximum load, the displacement amount (μm) obtained by leaving it at the maximum load for 0.1 second is the maximum displacement amount X ₃ , 0 After leaving for 1 second, the load is reduced at an unloading speed of 9.8 × 10 ⁻⁵ N / sec, and the displacement amount (μm) obtained when the load becomes 0 N is defined as the displacement amount X ₄ , the maximum displacement amount X _When the difference between ₃ and the displacement amount X ₄ is the elastic displacement amount (X ₃ −X ₄ ) ,
The restoration rate Z (25) (% ) represented by {(X ₃ −X ₄ ) / X ₃ } × 100 is
40 ≦ Z (25) ≦ 80
Satisfied with the relationship
The average value of the maximum displacement amount X ₃ is 0.10 μm or more and 0.80 μm or less ,
Toner ratio of toner having the maximum displacement X ₃ within ± 20% on the average value before Symbol maximum displacement X ₃ where (X ₃ existence ratio) is characterized Oh Rukoto below 100% by number or more 65% by number .

Claim ratio of toner having the maximum displacement X ₃ within the average value ± 20% of the previous SL maximum displacement X ₃ where (X ₃ existence ratio) is characterized Oh Rukoto 70% by number to 98% by number or less The toner according to 1.

Claim ratio of toner having the maximum displacement X ₃ within the average value ± 20% of the previous SL maximum displacement X ₃ where (X ₃ existence ratio) is characterized Oh Rukoto 75% by number or more 95% by number or less The toner according to 1.

Load was plotted load and displacement at the microscopic compression test on the toner - in displacement curve, the slope of the straight line connecting the points at the time has been reached at the origin and the maximum load, when the R (25),
0 . 49 × 10 ⁻³ ≦ R (25) ≦ 1.70 × 10 ⁻³
The toner according to claim 1, wherein the toner satisfies the following relationship.

In a micro-compression test for the toner, a load was applied to the toner particle at a load speed of 9.8 × 10 ⁻⁵ N / sec at a measurement temperature of 50 ° C., and a maximum load of 2.94 × 10 ⁻⁴ N was reached. The displacement amount (μm) obtained sometimes is the displacement amount X ′ ₂ , and after reaching the maximum load, the displacement amount (μm) obtained by leaving it at the maximum load for 0.1 second is the maximum displacement amount X ′ ₃ , After leaving for 0.1 seconds, the load is reduced at an unloading speed of 9.8 × 10 ⁻⁵ N / sec, and the displacement amount (μm) obtained when the load becomes 0 N is defined as the displacement amount X ′ ₄ , the maximum When the difference between the displacement amount X ′ ₃ and the displacement amount X ′ ₄ is the elastic displacement amount (X ′ ₃ −X ′ ₄ ) ,
The restoration rate Z (50) (% ) represented by {(X ′ ₃ −X ′ ₄ ) / X ′ ₃ } × 100 is
10 ≦ Z (50) ≦ 55
The toner according to claim 1, wherein the toner satisfies the following relationship.

The toner particles are dispersed to obtain a colorant-containing monomer in the polymerizable monomer to disperse the deposited coloring material, dissolved to obtain a resin-containing monomer dissolved tree fat in the polymerizable monomer, to obtain and was colorant-containing monomer and the resin-containing monomer, adjustment made to obtain a mixed tone made liquid by ultrasonic waves using an ultrasonic generator, the aqueous dispersion medium the adjustment made solution dispersed in the body according to any one of claims 1 to 5 you characterized in that obtained by the process of chromatic granulation process to produce particles of the polymerizable monomer composition toner.

The ultrasonic generator, the toner according to claim 6, characterized that you have had a vibrator for oscillating the ultrasonic waves to form a convex portion so that the concentric peripheral direction of the cylinder.