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    • 2. 发明授权
    • Toner and image forming method
    • 调色剂和成像方法
    • US5976752A
    • 1999-11-02
    • US135167
    • 1998-08-18
    • Satoshi MatsunagaKoichi TomiyamaYuichi MizohKeita NozawaMinekazu EndoTadashi DoujoYoshihiro OgawaNene Shibayama
    • Satoshi MatsunagaKoichi TomiyamaYuichi MizohKeita NozawaMinekazu EndoTadashi DoujoYoshihiro OgawaNene Shibayama
    • G03G9/087G03G9/097G03G13/22
    • G03G9/08755G03G9/087G03G9/08702G03G9/08711G03G9/08728G03G9/08797
    • An electrophotographic toner is composed of at least a binder resin, a colorant, and a wax. The binder resin (a) comprises a polyester resin, a vinyl resin and a hybrid resin component comprising a polyester unit and a vinyl polymer unit, (b) has a THF (tetrahydrofuran)-soluble content (W1) of 50-85 wt. % and a THF-insoluble content (W2) of 5-50 wt. %, an ethyl acetate-soluble content (W3) of 40-98 wt. % and an ethyl acetate-insoluble content (W4) of 2-60 wt. %, a chloroform-soluble content (W5) of 55-90 wt. % and a chloroform-insoluble content (W6) of 10-45 wt. %, respectively after 10 hours of Soxhlet extraction with respective solvents, giving a ratio W4/S6 of 1.1-4.0, and contains a THF-soluble content providing a GPC (gel permeation chromatography) chromatogram exhibiting a main peak in a molecular weight range of 4000-9000, including 35.0-65.0% (A1) of a component haing molecular weights in a range of 500 to below 1.times.10.sup.4, 25.0-45.0% (A2) of a component having molecular weights in a range of 1.times.10.sup.4 to below 1.times.10.sup.5 and 10.0-30.0% (A3) of a component having molecular weights of at least 1.times.10.sup.5 giving a ratio A1/A2 of 1.05-2.00. The binder resin shows good dispersibility of wax and colorant.
    • 电子照相调色剂由至少粘合剂树脂,着色剂和蜡组成。 粘合剂树脂(a)包括聚酯树脂,乙烯基树脂和包含聚酯单元和乙烯基聚合物单元的混合树脂组分,(b)具有50-85重量%的THF(四氢呋喃) - 可溶成分(W1) %和THF不溶物含量(W2)为5-50wt。 %,40-98重量%的乙酸乙酯可溶物含量(W3) %,乙酸乙酯不溶物含量(W4)为2-60wt。 %,55-90重量%的氯仿可溶物含量(W5) %,氯仿不溶物含量(W6)为10-45wt。 %,分别用各自的溶剂提取索氏提取10小时后,得到比例W4 / S6为1.1-4.0,并含有THF可溶性成分,提供在分子量范围内显示主峰的GPC(凝胶渗透色谱)色谱图 4000-9000,包括分子量在500至低于1×10 4范围内的分子量为35.0-65.0%(A1),分子量为1×104至低于1×10 5的组分的25.0-45.0%(A2)和10.0 -30.0%(A3)的分子量为至少1×10 5的组分,其A1 / A2比为1.05-2.00。 粘合剂树脂表现出良好的蜡和着色剂的分散性。
    • 5. 发明授权
    • Toner for developing electrostatic image, image forming method and
process-cartridge
    • 用于显影静电图像,成像方法和处理盒的调色剂
    • US5695902A
    • 1997-12-09
    • US749635
    • 1996-11-15
    • Yushi MikuriyaYuichi MizohTadashi Doujo
    • Yushi MikuriyaYuichi MizohTadashi Doujo
    • G03G9/097G03G13/22
    • G03G9/09716G03G9/09708
    • A toner for developing an electrostatic image is formed as a mixture of toner particles containing at least a binder resin and a colorant, and inorganic fine powder. The inorganic fine powder includes: (A) inorganic fine powder (A) treated at least with silicone oil, and (B) inorganic fine powder (B) comprising a composite metal oxide including at least Si as a constituent element and having a weight-average particle size of 0.3-5 .mu.m. Because of the inclusion of the two types of inorganic fine powders (A) and (B), the toner is stably provided with a high flowability and a high triboelectric charge under various environmental conditions including low-humidity to high-humidity conditions. The toner is suitably used in an image forming system including a contact-charging means, a contact-transfer means and a film (or surf)-fixing system.
    • 作为静电图像显影用调色剂形成为至少含有粘合剂树脂和着色剂的调色剂颗粒和无机细粉末的混合物。 无机细粉末包括:(A)至少用硅油处理的无机细粉末(A)和(B)无机细粉末(B),其包含至少包含Si作为构成元素的复合金属氧化物, 平均粒径0.3-5μm。 由于包含两种类型的无机细粉(A)和(B),调色剂在包括低湿度至高湿条件的各种环境条件下稳定地具有高流动性和高摩擦电荷。 调色剂适用于包括接触充电装置,接触转移装置和膜(或冲洗) - 混合系统的图像形成系统。
    • 7. 发明授权
    • Toner for developing electrostatic image, and image forming method
    • 用于显影静电图像的调色剂和图像形成方法
    • US5955234A
    • 1999-09-21
    • US947273
    • 1997-10-08
    • Satoshi MatsunagaManabu OhnoTadashi Doujo
    • Satoshi MatsunagaManabu OhnoTadashi Doujo
    • C08F257/00C08F265/06G03G9/08G03G9/087
    • C08F257/00C08F265/06G03G9/081G03G9/08711G03G9/08782G03G9/08788G03G9/08795G03G9/08797
    • A toner for developing an electrostatic image is comprised of a binder resin, a colorant and a wax. The toner has the following rheological characteristics: (a) a temperature at which the ratio of a loss elastic modulus to a storage elastic modulus (G"/G'=tan .delta.) comes to be 1.0 is present in a temperature range of from 55.degree. C. to 70.degree. C., with an elastic modulus being 1.5.times.10.sup.8 Pa or below; (b) the ratio of the storage elastic modulus at a temperature of 40.degree. C. (G'.sub.40) to the storage elastic modulus at a temperature of 50.degree. C. (G'.sub.50), G'.sub.40 /G'.sub.50, is from 1.5 to 5.0; (c) the ratio of the storage elastic modulus at a temperature of 50.degree. C. (G'.sub.50) to the storage elastic modulus at a temperature of 60.degree. C. (G'.sub.60), G'.sub.50 /G'.sub.60, is from 3 to 20; (d) the ratio of the storage elastic modulus at a temperature of 70.degree. C. (G'.sub.70) to the storage elastic modulus at a temperature of 100.degree. C. (G'.sub.100), G'.sub.70 /G'.sub.100, is from 50 to 250; and (e) the ratio of the storage elastic modulus at a temperature of 110.degree. C. (G'.sub.110) to the storage elastic modulus at a temperature of 140.degree. C. (G'.sub.140), G'.sub.110 /G'.sub.140, is from 2 to 20.
    • 用于显影静电图像的调色剂由粘合剂树脂,着色剂和蜡组成。 调色剂具有以下流变特性:(a)在下述的温度范围内存在损耗弹性模量与储能弹性模量(G“/ G'=tanδ)的比率为1.0的温度 55℃至70℃,弹性模量为1.5×10 8 Pa或更低; (b)在温度为40℃(G'40)下的储能弹性模量与50℃温度(G'50),G'40 / G'50, 为1.5〜5.0; (c)温度为50℃(G'50)的储能弹性模量与60℃温度(G'60),G'50 / G'60, 从3到20; (d)温度为70℃(G'70)时的储能弹性模量与100℃(G'100),G'70 / G'100的储能弹性模量的比率, 从50到250; 和(e)温度为110℃(G'110)时的储能弹性模量与140℃温度下的储能弹性模量(G'140),G'110 / G'140 是从2到20。
    • 8. 发明授权
    • Toner for developing electrostatic image
    • 用于显影静电图像的调色剂
    • US06623901B1
    • 2003-09-23
    • US08992427
    • 1997-12-18
    • Takaaki KohtakiMakoto UnnoYushi MikuriyaTadashi Doujo
    • Takaaki KohtakiMakoto UnnoYushi MikuriyaTadashi Doujo
    • G03G9083
    • G03G9/08795G03G9/08755G03G9/09733
    • A toner for developing an electrostatic image is constituted by a binder resin and a long-chain compound. The binder resin is a polyester resin or vinyl resin respectively having an acid value of preferably 25-70 mgKOH/g. The long-chain compound is a long-chain alkyl alcohol having an OH value of 10-120 mgKOH/g or a long-chain alkyl carboxylic acid having an acid value of 5-120 mgKOH/g and is contained so as to satisfy a condition of the following formula (1) or formula (2): Formula (1) acid value of binder resin +OH value of long-chain alkyl alcohol >(¼)×OH value of binder resin, or Formula (2) acid value of binder resin +acid value of long-chain alkyl carboxylic acid >(¼)×OH value of binder resin. The toner is characterized by a good balance between fixing performances and developing performances suitable for a variety of models of image forming apparatus and in wide ranges of environmental conditions.
    • 用于显影静电图像的调色剂由粘合剂树脂和长链化合物构成。 粘合剂树脂是分别具有优选25-70mgKOH / g的酸值的聚酯树脂或乙烯基树脂。 长链化合物是OH值为10〜120mgKOH / g的长链烷基醇或酸值为5-120mgKOH / g的长链烷基羧酸,其含有以满足 下式(1)或式(2)的条件:式(1)粘合剂树脂的酸值+长链烷基醇的OH值>(¼)粘合剂树脂的xOH值,或式(2)粘合剂的酸值 树脂+长链烷基羧酸的酸值>(¼)xOH值的粘合剂树脂。 调色剂的特征在于适用于多种型号的图像形成装置的定影性能和显影性能之间的良好平衡以及广泛的环境条件。
    • 9. 发明授权
    • Toner for developing electrostatic images
    • 用于显影静电图像的调色剂
    • US5773183A
    • 1998-06-30
    • US749640
    • 1996-11-15
    • Tadashi DoujoYuichi MizooTakaaki KotakiYushi Mikuriya
    • Tadashi DoujoYuichi MizooTakaaki KotakiYushi Mikuriya
    • G03G9/083G03G9/087G03G9/09
    • G03G9/091G03G9/08755G03G9/08795G03G9/0833G03G9/08782
    • A toner for developing an electrostatic image has a binder resin, a colorant and a charge control agent. The binder resin has a polyester resin having an acid value of from 15 to 40 and a hydroxyl value of 45 or less. The toner has, in its molecular weight distribution as measured by gel permeation chromatography, tetrahydrofuran-soluble matter having a weight average molecular weight Mw of 100,000 or more, having a ratio of weight average molecular weight Mw to number average molecular weight Mn, Mw/Mn, of not less than 35, containing from 70% to 94% of a low-molecular weight region component having a molecular weight of less than 150,000, containing from 1% to 10% of a medium-molecular weight region component having a molecular weight of from 150,000 to 500,000, and containing from 5% to 25% of a high-molecular weight region component having a molecular weight of more than 500,000. The high-molecular weight region component is more than the medium-molecular weight region component.
    • 用于显影静电图像的调色剂具有粘合剂树脂,着色剂和电荷控制剂。 粘合剂树脂具有酸值为15〜40,羟值为45以下的聚酯树脂。 调色剂在通过凝胶渗透色谱法测定的分子量分布中,具有重均分子量Mw为100,000以上的四氢呋喃可溶性物质,重均分子量Mw与数均分子量Mn的比,Mw / Mn不低于35,含有70%至94%的分子量小于150,000的低分子量成分,含有1%至10%的具有分子量 重量为15万至500,000,并含有5%至25%的分子量大于500,000的高分子量成分。 高分子量区域成分大于中等分子量区域成分。