公开(公告)号：EP0872773B1

公开(公告)日：2004-06-16

申请号：EP98302814.3

申请日：1998-04-09

申请人： Sharp Kabushiki Kaisha

发明人： Morinishi, Yasuharu ,  Nakamura, Tadashi ,  Nagahama, Hitoshi ,  Ogawa, Satoshi ,  Ishida, Toshihisa ,  Ohuchi, Takeaki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10

CPC分类号： G03G9/10 ,  G03G9/08 ,  G03G9/097 ,  G03G9/09708

公开(公告)号：EP0872774A3

公开(公告)日：1999-06-09

申请号：EP98302961.2

申请日：1998-04-16

申请人： Sharp Kabushiki Kaisha

发明人： Ogawa, Satoshi ,  Nagahama, Hitoshi ,  Morinishi, Yasuharu ,  Imafuku, Tatsuo ,  Ohuchi, Takeaki ,  Ishida, Toshihisa ,  Nakamura, Tadashi

IPC分类号： G03G9/08 ,  G03G9/087

CPC分类号： G03G9/08797 ,  G03G9/081 ,  G03G9/0825

摘要： Electrophotographic toner particles (1) contain a binder resin (2), wax particles (3) and a coloring agent, the wax particles (3) being dimensioned to have a major axis (L) of not more than 6.0 µm and a major axis (L)/minor axis (S) ratio of 1.4 to 4.0. The binder resin preferably has a melt index of 5.0 to 11.0 and a dielectric loss tangent (tan 6) of not more that 5.0. This arrangement prevents the wax particles (3) inside the toner particles (1) or at the surface of the toner particles (1) being exposed or projecting to provide superior offset-reduction during fixing and to reduce surface wax contamination.

摘要翻译： 电子照相调色剂颗粒（1）含有粘合剂树脂（2），蜡颗粒（3）和着色剂，蜡颗粒（3）的尺寸设计为具有不大于6.0μm的长轴（L） （L）/短轴（S）比为1.4〜4.0。 粘合剂树脂的熔体指数优选为5.0〜11.0，介电损耗角正切（tanδ）为5.0以下。 这种布置防止调色剂颗粒（1）内部或调色剂颗粒（1）表面上的蜡颗粒（3）暴露或突出，以在固定期间提供优异的抵消减少并且减少表面蜡污染。

公开(公告)号：EP0872773A3

公开(公告)日：1999-03-10

申请号：EP98302814.3

申请日：1998-04-09

申请人： Sharp Kabushiki Kaisha

发明人： Morinishi, Yasuharu ,  Nakamura, Tadashi ,  Nagahama, Hitoshi ,  Ogawa, Satoshi ,  Ishida, Toshihisa ,  Ohuchi, Takeaki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10

CPC分类号： G03G9/10 ,  G03G9/08 ,  G03G9/097 ,  G03G9/09708

摘要： The present invention provides electrophotographic printing-use toner capable of producing a quality image, without depending on excessive addition of a fluidizing agent, even after maintained at high temperature which causes toner to aggregate. The electrophotographic printing-use toner constituting two-component developer with magnetic powder carrier, made of a toner mother particle including binding agent synthetic resin and a coloring agent, whose surface is added with a fluidizing agent is manufactured so that a ratio of ΔQ h /ΔQ s is not less than 0.37, more preferably not less than 0.45, where ΔQ s is a charging rate of the toner mother particle, at a start of mixing with respect to the magnetic powder carrier, maintained at normal temperature, and ΔQ h is a charging rate of the toner mother particle, at the start of mixing, maintained under a condition of temperature and time which causes the electrophotographic printing-use toner to aggregate.

摘要翻译： 本发明提供即使在维持在导致调色剂聚集的高温下之后也能够产生高质量图像的电子照相打印用调色剂，而不依赖于过量添加流化剂。 制造构成具有磁性粉末载体的双组分显影剂的电子照相打印用调色剂，所述双组分显影剂由表面添加有流化剂的包含粘合剂合成树脂和着色剂的调色剂母粒制成，使得ΔQh/ΔQs 其中ΔQs是相对于磁粉载体的混合开始时保持在常温下的调色剂母粒的带电率，ΔQh是不小于0.45，更优选不小于0.45，并且ΔQh是 调色剂母粒在混合开始时保持在使电子照相打印用调色剂聚集的温度和时间的条件下。

公开(公告)号：EP0872774B1

公开(公告)日：2005-11-16

申请号：EP98302961.2

申请日：1998-04-16

申请人： SHARP KABUSHIKI KAISHA

发明人： Ogawa, Satoshi ,  Nagahama, Hitoshi ,  Morinishi, Yasuharu ,  Imafuku, Tatsuo ,  Ohuchi, Takeaki ,  Ishida, Toshihisa ,  Nakamura, Tadashi

IPC分类号： G03G9/08 ,  G03G9/087

CPC分类号： G03G9/08797 ,  G03G9/081 ,  G03G9/0825

公开(公告)号：EP0872774A2

公开(公告)日：1998-10-21

申请号：EP98302961.2

申请日：1998-04-16

申请人： Sharp Kabushiki Kaisha

发明人： Ogawa, Satoshi ,  Nagahama, Hitoshi ,  Morinishi, Yasuharu ,  Imafuku, Tatsuo ,  Ohuchi, Takeaki ,  Ishida, Toshihisa ,  Nakamura, Tadashi

IPC分类号： G03G9/08 ,  G03G9/087

CPC分类号： G03G9/08797 ,  G03G9/081 ,  G03G9/0825

摘要： Electrophotographic toner particles (1) contain a binder resin (2), wax particles (3) and a coloring agent, the wax particles (3) being dimensioned to have a major axis (L) of not more than 6.0 µm and a major axis (L)/minor axis (S) ratio of 1.4 to 4.0. The binder resin preferably has a melt index of 5.0 to 11.0 and a dielectric loss tangent (tan 6) of not more that 5.0. This arrangement prevents the wax particles (3) inside the toner particles (1) or at the surface of the toner particles (1) being exposed or projecting to provide superior offset-reduction during fixing and to reduce surface wax contamination.

公开(公告)号：EP0872773A2

公开(公告)日：1998-10-21

申请号：EP98302814.3

申请日：1998-04-09

申请人： Sharp Kabushiki Kaisha

发明人： Morinishi, Yasuharu ,  Nakamura, Tadashi ,  Nagahama, Hitoshi ,  Ogawa, Satoshi ,  Ishida, Toshihisa ,  Ohuchi, Takeaki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10

CPC分类号： G03G9/10 ,  G03G9/08 ,  G03G9/097 ,  G03G9/09708

摘要： The present invention provides electrophotographic printing-use toner capable of producing a quality image, without depending on excessive addition of a fluidizing agent, even after maintained at high temperature which causes toner to aggregate. The electrophotographic printing-use toner constituting two-component developer with magnetic powder carrier, made of a toner mother particle including binding agent synthetic resin and a coloring agent, whose surface is added with a fluidizing agent is manufactured so that a ratio of ΔQ h /ΔQ s is not less than 0.37, more preferably not less than 0.45, where ΔQ s is a charging rate of the toner mother particle, at a start of mixing with respect to the magnetic powder carrier, maintained at normal temperature, and ΔQ h is a charging rate of the toner mother particle, at the start of mixing, maintained under a condition of temperature and time which causes the electrophotographic printing-use toner to aggregate.

摘要翻译： 本发明提供了即使在保持在高温下也能够产生质量图像的电子照相印刷用调色剂，而不依赖于过量添加流化剂，这导致调色剂聚集。 制造具有磁性粉末载体的二组分显影剂的电子照相印刷用调色剂，其由表面添加有流化剂的包含粘合剂合成树脂和着色剂的调色剂母粒制成，使得ΔTATA/ DELTA Qs不小于0.37，更优选不小于0.45，其中DELTA Qs是调色剂母粒的充电速率，在相对于磁性粉末载体的混合开始时保持在常温下，并且DELTA Qh是 在混合开始时调色剂母粒的充电速率在使得电子照相印刷用调色剂聚集的温度和时间的条件下保持。