-
公开(公告)号：US5240805A
公开(公告)日：1993-08-31
申请号：US734454
申请日：1991-07-23
IPC分类号： G03G9/087
CPC分类号： G03G9/08711 , Y10S430/105
摘要： The present invention provides an electrophotographic toner containing, as a fixing resin, a styrene-acrylic copolymer in which styrene content and molecular-weight distribution are specified, and which contains a specific high-molecular-weight component.The electrophotographic toner of the present invention is improved in bending resistance while assuring excellent low-temperature fixing properties, resistance to off-set and heat resistance.
-
公开(公告)号：US5232806A
公开(公告)日：1993-08-03
申请号：US801506
申请日：1991-12-02
CPC分类号： G03G9/0827 , G03G9/0821 , G03G9/097 , Y10S430/104
摘要： Disclosed is a one-component magnetic developer for the electrophotography, which comprises one-component magnetic toner particles and at least one fine particulate additive selected from the group consisting of hydrophobic silica, hydrophilic silica and alumina, wherein the one-component magnetic toner particles have a sphericity degree (DS), defined by the following formula, of 70 to 90%, and a specific surface area of 1.4 to 2.0 m.sup.2 /g:DS=Cc/CT (1)wherein Cc represents the outer circumference of a circle having the same area as the projected area of the toner, and CT represent the actual outer circumference of the projected plane of the toner. This developer is excellent in the flowability and can provide an image having a high density.
-
公开(公告)号：US5364721A
公开(公告)日：1994-11-15
申请号：US990926
申请日：1992-12-15
申请人： Hidenori Asada , Takeshi Arakawa , Nobuyuki Tsuji
发明人： Hidenori Asada , Takeshi Arakawa , Nobuyuki Tsuji
IPC分类号： G03G9/087
CPC分类号： G03G9/08711 , Y10S430/105
摘要： The present invention provides an electrophotographic toner containing, as a fixing resin, a styrene-acrylic copolymer in which styrene content, molecular-weight distribution and acid value are specified. The electrophotographic toner of the present invention is improved in heat resistance by raising the glass transition temperature of the fixing resin, while assuring excellent low-temperature fixing properties and resistance to off-set.
摘要翻译： 本发明提供一种含有苯乙烯含量，分子量分布和酸值的苯乙烯 - 丙烯酸共聚物作为固定树脂的电子照相调色剂。 本发明的电子照相调色剂通过提高固定树脂的玻璃化转变温度而提高耐热性，同时确保优异的低温定影性和耐脱落性。
-
公开(公告)号：US5077168A
公开(公告)日：1991-12-31
申请号：US458520
申请日：1989-12-28
申请人： Shunsuke Ogami , Atsushi Yamaguchi , Hidenori Asada , Masanori Fujii , Hiroshi Komata , Kiminori Umeda , Takahiko Kimura
发明人： Shunsuke Ogami , Atsushi Yamaguchi , Hidenori Asada , Masanori Fujii , Hiroshi Komata , Kiminori Umeda , Takahiko Kimura
CPC分类号： G03G9/097 , G03G9/08728 , G03G9/091 , G03G9/09783
摘要： Disclosed is a toner for the electrophotography, which comprises as a main component a styrene/acrylic copolymer having at least two molecular weight distribution peaks, the molecular weight (Mw) of the peak on the lowest molecular weight side being lower than 13000, wherein the toner contains a charge controlling agent dispersed therein at a concentration of at least 0.3% by weight and the charge controlling agent has such a particle size distribution that the area ratio of particles having a particle size larger than 2.5 .mu.m is at least 80% based on the section of the toner. If this toner is used, the fixing-possible temperature can be broadened while increasing the fixing ratio without reduction of the performances of the toner.
-
5.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。
-
公开(公告)号：US5976754A
公开(公告)日：1999-11-02
申请号：US201811
申请日：1998-12-01
申请人： Hidenori Asada , Masami Tsujihiro , Nobuhiro Hirano , Takuya Kadota , Toshiaki Akiyama , Akemi Uchizono
发明人： Hidenori Asada , Masami Tsujihiro , Nobuhiro Hirano , Takuya Kadota , Toshiaki Akiyama , Akemi Uchizono
CPC分类号： G03G9/08704 , G03G9/0821 , G03G9/0825 , G03G9/08708 , G03G9/08786 , G03G9/08788
摘要： Disclosed is a toner comprising a fixing resin, a colorant, a releasant made of a polyolefin having a melting point of not more than 120.degree. C., preferably 60 to 120.degree. C. and a compatibilizing agent for the fixing resin and the releasant, wherein a glass transition temperature Tg of the toner is from 53 to 63.degree. C. and the releasant having a particle diameter of 0.2 to 1.5 .mu.m is dispersed in the fixing resin. This toner is superior in blocking resistance, filming resistance and the like and is capable of fixing at a low temperature and, therefore, this toner is useful as a toner for image forming apparatus utilizing an electrophotographic process.
摘要翻译： 公开了一种调色剂，其包含固定树脂，着色剂，由熔点不超过120℃，优选60至120℃的聚烯烃制成的还原剂和用于固定树脂和脱模剂的相容剂， 其中调色剂的玻璃化转变温度Tg为53至63℃，粒径为0.2-1.5μm的剥离剂分散在固定树脂中。 该调色剂的抗粘连性，耐成膜性等优异，并且能够在低温下固定，因此该调色剂可用作利用电子照相方法的图像形成装置的调色剂。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.024 秒)
