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    • 9. 发明授权
    • Image forming apparatus and developing device with improved self toner density control
    • 具有改进的自身调色剂浓度控制的图像形成装置和显影装置
    • US06337957B1
    • 2002-01-08
    • US09597405
    • 2000-06-21
    • Shinji TamakiTsuyoshi ImamuraHideo YoshizawaJunichi TeraiMasayuki YamaneKiyonori TsudaKazuhisa SudoShinichi KawaharaShunji KatohMikio IshibashiTokuya Ohjimi
    • Shinji TamakiTsuyoshi ImamuraHideo YoshizawaJunichi TeraiMasayuki YamaneKiyonori TsudaKazuhisa SudoShinichi KawaharaShunji KatohMikio IshibashiTokuya Ohjimi
    • G03G1508
    • G03G15/09G03G15/081G03G2215/0634
    • A developing device includes a developer bearing member including an internal magnetic field generating device and configured such that a surface thereof moves to carry and convey a developer including toner and carrier. A developer regulating member regulates a quantity of the developer carried and conveyed by the developer bearing member toward a developing area, and a developer accommodating unit accommodates the developer regulated to be conveyed toward the developing area by the developer regulating member. A toner accommodating unit includes a toner supplying opening opposing a surface of the developer bearing surface of the developer bearing member at a position adjacent to and upstream of the developer accommodating unit in a developer conveying direction. The toner in the toner accommodating unit is taken into the developer on the developer bearing member based on a toner density of the developer on the developer bearing member by a movement of the developer with a conveyance of the developer on the developer bearing member. The developing device further includes a peeling off member that opposes, without contacting, a surface of the developer bearing member in the developer accommodating unit so as to peel off an upper layer part of the developer carried and conveyed by the developer bearing member.
    • 显影装置包括显影剂承载构件,该显影剂承载构件包括内部磁场产生装置,并且构造成使得其表面移动以携带并传送包括调色剂和载体的显影剂。 显影剂调节构件调节由显影剂承载构件承载并运送到显影区域的显影剂的量,并且显影剂容纳单元容纳通过显影剂调节构件调节成朝向显影区域传送的显影剂。 调色剂容纳单元包括在显影剂输送方向上与显影剂容纳单元相邻并且在显影剂容纳单元的上游的位置处与显影剂承载构件的显影剂承载表面的表面相对的调色剂供给口。 基于显影剂承载部件上的显影剂的调色剂浓度,显影剂通过显影剂承载部件上的显影剂传送,调色剂容纳单元中的调色剂被引入显影剂承载部件上的显影剂中。 显影装置还包括剥离构件,其与显影剂承载构件的显影剂容纳单元的表面相对而不接触,从而剥离由显影剂承载构件承载和输送的显影剂的上层部分。
    • 10. 发明授权
    • Image forming apparatus and developing apparatus preventing uneven image density
    • 防止图像浓度不均匀的图像形成装置和显影装置
    • US06522855B1
    • 2003-02-18
    • US09565539
    • 2000-05-05
    • Shunji KatohHideo YoshizawaShinji TamakiJunichi TeraiKiyonori TsudaTsuyoshi ImamuraMasayuki YamaneKazuhisa SudoShinichi Kawahara
    • Shunji KatohHideo YoshizawaShinji TamakiJunichi TeraiKiyonori TsudaTsuyoshi ImamuraMasayuki YamaneKazuhisa SudoShinichi Kawahara
    • G03G1508
    • G03G15/09
    • A developing apparatus for use in an image forming apparatus includes a developer bearing member having a magnetic field generating device internally and configured to bear and convey two-component developer including toner and magnetic carrier, a first regulating member configured to regulate an amount of the developer born and conveyed by the developer bearing member, a developer container section for storing the developer scraped off by the first regulating member, a second regulating member arranged upstream of the first regulating member in a conveying direction of the developer on the developer bearing member, and a toner container section for supplying toner to the developer bearing member. The developing apparatus changes a toner take-in condition of the developer on the developer bearing member by changing a contact condition between the developer and the toner according to a change of a toner density of the developer on the developer bearing member. A surface of the second regulating member facing the developer bearing member has an area large enough to unify a layer thickness of the developer on the image bearing member in the axial direction of the developer bearing member.
    • 用于图像形成装置的显影装置包括:显影剂承载部件,其具有内部的磁场产生装置,并构造成承载和输送包括调色剂和磁性载体的双组分显影剂;第一调节部件,其构造成调节显影剂的量 由显影剂承载部件承载和传送的显影剂容器部分,用于存储由第一调节部件刮掉的显影剂的显影剂容器部分,在显影剂承载部件上的显影剂的输送方向上布置在第一调节部件的上游的第二调节部件, 用于向显影剂承载部件供应调色剂的调色剂容器部分。 根据显影剂承载部件上的显影剂的调色剂密度的变化,显影装置通过改变显影剂和调色剂之间的接触状态来改变显影剂承载部件上的显影剂的调色剂接收状态。 第二调节构件面向显影剂承载构件的表面具有足够大的面积以使图像承载构件上的显影剂的层厚度沿显影剂承载构件的轴向统一。