公开(公告)号：EP1276017A2

公开(公告)日：2003-01-15

申请号：EP02015510.7

申请日：2002-07-10

申请人： SEIKO EPSON CORPORATION

发明人： Miyakawa, Nobuhiro ,  Kadota, Takuya ,  Takano, Hidehiro ,  Yasukawa, Shinji ,  Kunugi, Masanao

IPC分类号： G03G9/097 ,  G03G9/08

CPC分类号： G03G9/09708 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/09716 ,  G03G9/09725

摘要： A non-magnetic single-component toner 8 of the present invention has toner mother particles 8a, and external additives 12 comprising: two hydrophobic silicas 13, 14 of which particle diameters are different from each other, i.e. a mean primary particle diameter of 7 nm to 12 nm and a mean primary particle diameter of 40 nm to 50 nm, and a hydrophobic rutile/anatase type titanium oxide 15 having a spindle shape of which major axial diameter is in a range from 0.02 nm to 0.10 nm and the ratio of the major axial diameter to the minor axial diameter is set to be 2 to 8, wherein the external additives 12 adhere to the toner mother particles 8a. By the hydrophobic silicas 13, 14 having work function smaller than the work function of the toner mother particles 8a, the negative charging property is imparted to the toner mother particles 8a and the fluidity is also insured. On the other hand, by mixing and using hydrophobic rutile/anatase type titanium oxide particles 15 having work function larger than or equal to the work function of the toner mother particles 8a together with the hydrophobic silicas 13, 14, the non-magnetic single-component toner 8 is prevented from excessively charged. Therefore, the amount of fog toner on non-image portions is reduced, the transfer efficiency is further improved, the charging property is further stabilized, and the production of reverse transfer toner is further inhibited.

摘要翻译： 本发明的非磁性单组分调色剂8具有调色剂母粒子8a和外部添加剂12，其包含：两个粒径彼此不同的疏水性二氧化硅13,14，即平均一次粒径为7nm 平均一次粒径为40nm〜50nm的疏水性金红石/锐钛矿型氧化钛15，其主轴的直径为0.02nm〜0.10nm的主轴形状， 相对于小轴向直径的主轴向直径设定为2至8，其中外部添加剂12粘附到调色剂母粒8a上。 通过具有小于调色剂母粒子8a的功函数的功函数的疏水性二氧化硅13,14赋予调色剂母粒子8a的负带电性，还保证了流动性。 另一方面，通过将功能大于或等于调色剂母粒8a的功函数的疏水性金红石/锐钛型氧化钛粒子15与疏水性二氧化硅13,14混合并使用， 防止组分调色剂8过度充电。 因此，非图像部分上的雾化调色剂的量减少，转印效率进一步提高，充电性能进一步稳定，并进一步抑制反转印调色剂的生产。

公开(公告)号：EP1271251A1

公开(公告)日：2003-01-02

申请号：EP02013924.2

申请日：2002-06-24

申请人： SEIKO EPSON CORPORATION

发明人： Miyakawa, Nobuhiro ,  Yasukawa, Shinji ,  Abe, Nobumasa ,  Furumizu, Mikio ,  Yoda, Kaneo

IPC分类号： G03G5/06 ,  G03G5/04 ,  G03G9/08 ,  G03G15/16

CPC分类号： G03G15/75 ,  G03G5/04 ,  G03G5/06 ,  G03G9/0823 ,  G03G15/1605

摘要： An image forming apparatus of the present invention comprises: a latent image carrier; and a developing means for charging a toner into a negative polarity by triboelectric charging, for converting an electrostatic latent image on said latent image carrier to a visible image with said toner and is characterized in that (1) the work function (Φ t ) of said toner is set to be larger than the work function (Φ OPC ) of the surface of said latent image carrier, or (2) in case that the apparatus is of a type transferring the visible image to an intermediate transfer medium, the apparatus is characterized in that the work function (Φ t ) of said toner is set to be larger than the work function (Φ TM ) of the surface of said intermediate transfer medium or (3) the work function (Φ OPC ) of the surface of said latent image carrier, the work function (Φ t ) of said toner, and the work function (Φ TM ) of the surface of said intermediate transfer medium are set to satisfy a relation Φ t > Φ OPC > Φ TM . According to this apparatus, during development, the amount of fog can be reduced and the transfer efficiency can be improved. Since the transfer efficiency from the latent image carrier to the intermediate transfer medium is improved, thereby reducing the consumption of the toner, reducing the cleaning toner amount. Therefore, reduction in running cost and reduction in size of the cleaning toner container can be achieved.

摘要翻译： 本发明的图像形成装置包括：潜像载体; 以及用于通过摩擦带电将调色剂充电为负极的显影装置，用于将所述潜像载体上的静电潜像转换为可见图像，并且其特征在于：（1）功函数（PHI t） 所述调色剂被设定为大于所述潜像载体的表面的功函数（PHI OPC），或者（2）在所述设备是将所述可视图像转印到中间转印介质的类型的情况下，所述设备是 其特征在于，所述调色剂的功函数（PHI t）被设定为大于所述中间转印介质的表面的功函数（PHI TM）或（3）所述中间转印介质的表面的功函数（PHI OPC） 潜像载体，所述调色剂的功函数（PHI t）和所述中间转印介质的表面的功函数（PHI TM）被设置为满足关系PHI t> PHI OPC> PHI TM。 根据该装置，在显影期间，可以减少雾的量并且可以提高转印效率。 由于提高了从潜像载体向中间转印介质的转印效率，从而降低了调色剂的消耗，从而降低了清洁调色剂量。 因此，可以实现运转成本的降低和清洁调色剂容器的尺寸的减小。

公开(公告)号：EP1276017B1

公开(公告)日：2006-06-14

申请号：EP02015510.7

申请日：2002-07-10

申请人： SEIKO EPSON CORPORATION

发明人： Miyakawa, Nobuhiro ,  Kadota, Takuya ,  Takano, Hidehiro ,  Yasukawa, Shinji ,  Kunugi, Masanao

IPC分类号： G03G9/097 ,  G03G9/08

CPC分类号： G03G9/09708 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/09716 ,  G03G9/09725

公开(公告)号：EP1300728A2

公开(公告)日：2003-04-09

申请号：EP02021325.2

申请日：2002-09-20

申请人： SEIKO EPSON CORPORATION

发明人： Kitazawa, Atsunori ,  Katsuki, Kiyoteru ,  Miyakawa, Nobuhiro

IPC分类号： G03G9/08 ,  G03G15/34

CPC分类号： G03G15/346 ,  G03G9/0819 ,  G03G9/0823 ,  G03G9/09708 ,  G03G2217/0025

摘要： Toner is for use in an image forming apparatus of the TonerJet method, which satisfies any one of the following conditions: a) toner in which the content of reverse-polarity large-diameter toner is 10 % by count or smaller; b) toner in which the content of reverse-polarity fine-powder toner is 2 % by count or smaller; c) toner comprising a silica additive and a titanium oxide additive such that the content x of the titanium oxide additive is in the range of 0

摘要翻译： 调色剂用于调色剂方法的图像形成装置中，其满足以下条件之一：a）反极性大直径调色剂的含量以数量计算为10％以下的调色剂; b）反极性粉末调色剂的含量在2％以下或以下的调色剂; c）包含二氧化硅添加剂和氧化钛添加剂的调色剂，使得氧化钛添加剂的含量x在0