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1.发明公开Two-component developer for developing electrostatic images 失效2-Komponenten-Entwickler zur Entwicklung elektrostatischer Abbildungen。
公开(公告)号：EP0449541A1
公开(公告)日：1991-10-02
申请号：EP91302558.1
申请日：1991-03-25
IPC分类号： G03G9/107
CPC分类号： G03G9/107
摘要： Disclosed is a two-component developer, which comprises, as the carrier, specific sintered ferrite particles obtained by modifying ferrite particles obtained by modifying ferrite customarily used for a carrier, and which can provide a copies image having a high quality, while improving the stirring property and flowability of the carrier. This carrier comprises sintered ferrite particles having an internal pore ratio, based on the area, of 20 to 30% in an amount of 50 to 80% by weight based on the entire carrier, and the developing voltage dependency of the electric resistance of the carrier is reduced and controlled to an appropriate level.
摘要翻译： 公开了一种双组分显影剂，其包含作为载体的通过改性铁氧体颗粒获得的特定烧结铁氧体颗粒，所述铁氧体颗粒通过改性常规用于载体的铁素体，并且可以提供具有高质量的复印图像，同时改善搅拌 性能和流动性。 该载体包括基于整个载体的基于面积的内孔比为20〜30％的烧结铁氧体颗粒，其量为50〜80重量％，载体的电阻的显影电压依赖性 减少并控制到适当的水平。
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公开(公告)号：EP0524549B1
公开(公告)日：1996-05-15
申请号：EP92112183.6
申请日：1992-07-16
发明人： Kawano, Nobuaki , Tsuji, Nobuyuki , Fukumoto, Takatomo, Room No. 1011 , Tanaka, Kaoru , Fujii, Masanori , Yamaguchi, Atsushi, Room No. 304 , Fujii, Kazuhiko , Okuda, Koji
IPC分类号： G03G9/08
CPC分类号： G03G9/0817 , G03G9/081
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公开(公告)号：EP0447153A1
公开(公告)日：1991-09-18
申请号：EP91302001.2
申请日：1991-03-11
IPC分类号： G03G9/107
CPC分类号： G03G9/107
摘要： Disclosed is a carrier for a two-component developer, which comprises specific sintered ferrite particles obtained by modifying ferrite customarily used for a carrier, and which can provide a copied image having a high quality, especially an excellent gradation, while maintaining a high durability of the carrier. This carrier comprises sintered ferrite particles having an internal pore ratio, based on the area, of 3 to 20% in an amount of 50 to 80% by weight based on the entire carrier, and the developing voltage dependency of the electric resistance of the carrier is reduced and controlled to an appropriate level.
摘要翻译： 公开了一种双组分显影剂的载体，其包含通过改变常规用于载体的铁素体获得的特定的烧结铁氧体颗粒，并且可以提供具有高质量，特别是优异的等级的复印图像，同时保持高的耐久性 承运人 这种载体包括基于整个载体的基于面积的内孔比为3〜20％的烧结铁氧体颗粒，其量为50〜80重量％，载体的电阻的显影电压依赖性 减少并控制到适当的水平。
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公开(公告)号：EP0488789B1
公开(公告)日：1997-01-15
申请号：EP91311122.5
申请日：1991-11-29
IPC分类号： G03G9/08
CPC分类号： G03G9/0827 , G03G9/0821 , G03G9/097 , Y10S430/104
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公开(公告)号：EP0431830B1
公开(公告)日：1995-04-19
申请号：EP90312945.0
申请日：1990-11-28
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公开(公告)号：EP0524549A1
公开(公告)日：1993-01-27
申请号：EP92112183.6
申请日：1992-07-16
发明人： Kawano, Nobuaki , Tsuji, Nobuyuki , Fukumoto, Takatomo, Room No. 1011 , Tanaka, Kaoru , Fujii, Masanori , Yamaguchi, Atsushi, Room No. 304 , Fujii, Kazuhiko , Okuda, Koji
IPC分类号： G03G9/08
CPC分类号： G03G9/0817 , G03G9/081
摘要： In accordance with the present invention, the electrophotographic toner is produced by dispersing and mixing toner components containing a fixing resin, a coloring agent and an electric charge controlling dye, and by melting and kneading the resulting mixture, which is then subjected to pulverizing and classifying. According to the present invention, fine powder generated at the pulverizing and classifying steps is reused as added to a mixture of toner components as already dispersed and mixed at the dispersing and mixing step, and the surface dye density of the electric charge controlling dye is in the range from 1.0 x 10⁻³ to 1.7 x 10⁻³ g/g, or the rate of the amount of an electric charge controlling dye present on the surfaces of toner particles to the total amount of the electric charge controlling dye, is in the range from 10 to 27 % by weight. Even though repeatedly used for a long period of time, the electrophotographic toner does not lower the developer in electric charging characteristics. Further, by adding the fine powder to the mixture as already dispersed and mixed at the dispersing and mixing step, there can be efficiently produced a fine-powder regenerated toner excellent in transfer efficiency, resolution and gradation.
摘要翻译： 根据本发明，电子照相调色剂通过将包含固定树脂，着色剂和电荷控制染料的调色剂组分分散和混合并通过熔融和捏合所得混合物来制备，然后对其进行粉碎和分级 。 根据本发明，在粉碎和分级步骤中产生的细粉末在分散混合步骤中已经分散和混合的调色剂组分的混合物中被重新使用，并且电荷控制染料的表面染料密度在 3.0×10 -3至1.7×10 -3 g / g的范围，或者调色剂颗粒表面上存在的电荷控制染料的量相对于 电荷控制染料的重量在10〜27％的范围内。 即使重复使用了很长一段时间，电子照相调色剂也不会使显影剂的充电特性降低。 此外，通过在分散混合步骤中已经分散和混合的混合物中加入细粉，可以有效地生产转印效率，分辨率和灰度优异的细粉再生调色剂。
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7.发明公开
公开(公告)号：EP0488789A1
公开(公告)日：1992-06-03
申请号：EP91311122.5
申请日：1991-11-29
IPC分类号： G03G9/08
CPC分类号： G03G9/0827 , G03G9/0821 , G03G9/097 , Y10S430/104
摘要： A one-component magnetic developer for electrophotography comprises single component magnetic toner particles and at least one fine particulate additive selected from hydrophobic silica, hydrophilic silica and alumina, wherein the toner particles have a specific surface area of 1.4 to 2.0 m²/g and a sphericity degree (DS) of 70 to 90% as defined by formula (I) DS = Cc/CT wherein Cc is the outer circumference of a circle having the same area as the projected area of the toner, and CT is the actual outer circumference of the projected plane of the toner. The developer has excellent flowability and can provide a high density image.
摘要翻译： 用于电子照相术的单组分磁性显影剂包括单组分磁性调色剂颗粒和至少一种选自疏水性二氧化硅，亲水性二氧化硅和氧化铝的细颗粒添加剂，其中调色剂颗粒的比表面积为1.4-2.0m 2 / g 和由式（I）定义的70〜90％的球形度（DS）
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公开(公告)号：EP0431830A1
公开(公告)日：1991-06-12
申请号：EP90312945.0
申请日：1990-11-28
摘要： Disclosed is a ferrite carrier for a two-component type developer, characterized in that the internal pore ratio, based on the area, of carrier particles is adjusted to 3 to 30%, the electric resistance is adjusted within a certain range, and the developing electric field dependency indicating the change ratio of the electric resistance of the particles caused when the electric field is changed is controlled within a specific range. This carrier has a good durability, and when a two-component developer comprising this ferrite carrier is used, there can be obtained a high-quality image in which a solid image area and a fine line image area are clearly reproduced.
摘要翻译： 公开了一种用于双组分型显影剂的铁氧体载体，其特征在于，将载体颗粒的面积的内部孔隙率调节至3至30％，将电阻调节到一定范围内，并且显影 指示电场变化时引起的粒子的电阻的变化率的电场依赖性被控制在特定范围内。 该载体具有良好的耐久性，并且当使用包含该铁氧体载体的双组分显影剂时，可以获得清晰再现固体图像区域和细线图像区域的高质量图像。
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