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    • 2. 发明授权
    • Developing device for mixing and supplying developer
    • 用于混合和供应显影剂的显影装置
    • US5682583A
    • 1997-10-28
    • US257184
    • 1994-06-08
    • Noboru ItoYoshihiro ShojoKatsuhiko Takeda
    • Noboru ItoYoshihiro ShojoKatsuhiko Takeda
    • G03G15/08
    • G03G15/0822G03G2215/0822G03G2215/0833
    • A developing device having a developing sleeve opposed to a photoreceptor, and a developer transport portion adjacent to the sleeve. The developer transport portion is divided into first and second portions by a partition, and the developer is circulated between the first and second portions. A fresh toner is supplied to the developer in the second portion to be transported to the first portion while being mixed, and thereafter is supplied to the sleeve along an axial direction of the sleeve in the first portion. The second portion is provided with a transport member by which the developer is transported at an upstream side of the second portion with respect to the developer transport direction in the second portion with a speed faster than the toner supply speed and the transport speed of the developer at a downstream side of the first portion with respect to the developer transport direction in the second portion.
    • 具有与感光体相对的显影套筒和与套筒相邻的显影剂传送部分的显影装置。 显影剂输送部分通过隔板分成第一和第二部分,并且显影剂在第一和第二部分之间循环。 将新鲜调色剂供给到第二部分中的显影剂,以在被混合的同时被输送到第一部分,然后沿第一部分中的套筒的轴向方向被提供给套筒。 第二部分设置有传送构件,通过该传送构件,显影剂以相对于第二部分中的显影剂传送方向的第二部分的上游侧以比调色剂供给速度和显影剂的传送速度快的速度传送 在第一部分的下游侧相对于第二部分中的显影剂传送方向。
    • 4. 发明授权
    • Developing device
    • 开发设备
    • US5963766A
    • 1999-10-05
    • US92876
    • 1998-06-08
    • Yukihiko OkunoSuguru HamamichiShinichi YoshimotoKentaro KatoriMineyuki SakoYoshihiro Shojo
    • Yukihiko OkunoSuguru HamamichiShinichi YoshimotoKentaro KatoriMineyuki SakoYoshihiro Shojo
    • G03G15/08
    • G03G15/0822G03G2215/0822G03G2215/0841
    • A supply screw 10 and a collection screw 20 for a developing device equip with screw blades having different forms at particular sections so as to make conveying force of developer different depending on sections. Screw blades for big conveying force are attached within sections where developer distribution is dense while screw blades for small conveying force are attached within sections where developer distribution is sparse. In other words, conveying force is made to be greater at sparse-distribution section while smaller at dense-distribution section. Developer delivery is also promoted by providing different conveying force area within carry-up area where developer is carried up from a supply screw 10 to a collection screw 20 or vice versa. By making conveying force of each section different, developer is uniformly delivered to a developing roll 87 whether in width direction or in axial direction. Furthermore, developer circulation in a developing device becomes smooth.
    • 用于显影装置的供应螺钉10和收集螺钉20装备在特定部分具有不同形式的螺旋叶片,以使显影剂的输送力根据部分不同。 用于大输送力的螺旋叶片安装在显影剂分布密集的部分内,而用于小传送力的螺旋叶片连接在显影剂分布稀疏的部分内。 换句话说,在稀疏分布部分处的输送力较大,而在致密分布部分则较小。 还可以通过在显影剂从供给螺钉10向收集螺钉20运送的携带区域内提供不同的输送力区域,反之亦然地促进显影剂输送。 通过使各部分的输送力不同,显影剂在宽度方向或轴向方向上均匀地传送到显影辊87。 此外,显影装置中的显影剂循环变得平滑。