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91.发明授权Electrophotographic toner having improved low temperature fixing properties, off-set resistance and heat resistance 失效具有改进的低温定影性能，偏移电阻和耐热性的电子照相调色剂
公开(公告)号：US5362593A
公开(公告)日：1994-11-08
申请号：US890159
申请日：1992-05-29
CPC分类号： G03G9/0821
摘要： The present invention provides an electrophotographic toner having rheology characteristics, under the conditions of measuring frequency of 1 Hz and measuring distortion of 1 degree, such that:(1) the drop starting temperature of storage elastic modulus is in the range from 100.degree. to 110.degree. C.;(2) the storage elastic modulus at 150.degree. C. is not greater than 1.times.10.sup.4 dyn/cm.sup.2 ; and(3) the peak temperature of loss elastic modulus is not less than 125.degree. C.The toner is excellent in low-temperature fixing properties, off-set resisting properties and heat resistance.
摘要翻译： 本发明提供一种具有流变特性的电子照相调色剂，在测量频率为1Hz，测量变形1度的条件下，使得：（1）储能弹性模量的下降起始温度在100〜110℃的范围内 DEG; （2）150℃下的储能弹性模量不大于1×10 4 dyn / cm 2; 和（3）损耗弹性模量的峰值温度不低于125℃。调色剂具有优异的低温定影性能，抗静电性和耐热性。
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公开(公告)号：US5281505A
公开(公告)日：1994-01-25
申请号：US720419
申请日：1991-06-25
申请人： Masahide Inoue , Tetsuya Nakano , Naruo Yabe , Teruaki Teratani , Koichi Tsuyama , Yoshitake Shimizu , Seijirou Ishimaru
发明人： Masahide Inoue , Tetsuya Nakano , Naruo Yabe , Teruaki Teratani , Koichi Tsuyama , Yoshitake Shimizu , Seijirou Ishimaru
CPC分类号： G03G9/0821 , G03G9/0825 , G03G9/09
摘要： A toner composition comprising a binder resin having dispersed therein additives including a colorant and a charge control agent, wherein said additives are present as agglomerates having an average sectional area of from 1.4 to 1.7 .mu.m.sup.2 in a section of toner particles, the total sectional area of the agglomerates in the section of toner particles ranging from 1.5 to 1.8%, or wherein said colorant and charge control agent are present as agglomerates having an average sectional area of from 1.4 to 1.7 .mu.m.sup.2 in a section of toner particles, and said composition has such rheological characteristics that a dissipation factor (tan .delta.) is from 0.95 to 1.25 when a storage elastic modulus (G') is 10.sup.4 dyne/cm.sup.2.
摘要翻译： 一种调色剂组合物，其包含分散有添加剂的粘合剂树脂，所述添加剂包括着色剂和电荷控制剂，其中所述添加剂以调色剂颗粒的截面中平均截面积为1.4-1.7（my） 在调色剂颗粒部分中的附聚物的截面积为1.5至1.8％，或其中所述着色剂和电荷控制剂作为附聚物以在调色剂颗粒的一部分中的平均截面积为1.4至1.7（my） 并且所述组合物具有这样的流变特性，当储能弹性模量（G'）为104达因/ cm 2时，损耗因子（tan（delta））为0.95至1.25。
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公开(公告)号：US5232807A
公开(公告)日：1993-08-03
申请号：US735270
申请日：1991-07-24
申请人： Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Teruaki Teratani , Koichi Tsuyama , Yoshitake Shimizu , Seijiro Ishimaru
发明人： Tetsuya Nakano , Naruo Yabe , Masahide Inoue , Teruaki Teratani , Koichi Tsuyama , Yoshitake Shimizu , Seijiro Ishimaru
CPC分类号： G03G9/08711 , G03G9/1133 , Y10S430/105
摘要： The present invention provides an electrophotographic developer comprising (i) a toner containing, as a fixing resin, a styrene-acrylic copolymer presenting a gel permeation chromatogram showing a molecular-weight distribution in which the detection-starting molecular weight and the detection-ending molecular weight are respectively located in specific ranges, and (ii) a carrier coated with a coating resin which is a styrene-acrylic copolymer containing at least 2-hydroxyethyl acrylate.Even though repeatedly agitated in the developing device, the electrophotographic developer of the present invention is not deteriorated and assures good durability and long life-time.
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公开(公告)号：US5077169A
公开(公告)日：1991-12-31
申请号：US424645
申请日：1989-10-20
CPC分类号： G03G9/09725 , G03G9/0819 , G03G9/097
摘要： A toner composition is disclosed which comprises a mixture of toner particles with finely powdered acylic polymer, and finely powdered silica dispersed in the mixture, wherein the finely powdered acrylic polymer is present in an amount of 0.05 to 0.15 parts by weight per 100 parts by weight of the toner particles and the weight ratio of silica to acrylic polymer is within the range of 1 to 5:1. Also disclosed is a method for preparing the toner composition.
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