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    • 12. 发明授权
    • Developing device and image forming apparatus
    • 显影装置和图像形成装置
    • US07917068B2
    • 2011-03-29
    • US12216748
    • 2008-07-10
    • Yuki Matsuura
    • Yuki Matsuura
    • G03G15/08
    • G03G15/0818
    • A developing device is disposed facing an image bearing body that bears a latent image. The developing device includes a developer bearing body that bears a developer for developing the latent image. The developer includes mother particles and external additives. A liberation amount T (weight parts) of the external additives liberated from the mother particles with respect to 100 weight parts of the mother particles, a surface roughness Rz (m) of the developer bearing body, and a circumferential speed Vd (mm/s) of the developer bearing body satisfy the following relationships: 1.326×10−1≦T≦2.142×10−1 (weight parts), 7.1×10−6≦Rz≦15.0×10−6 (m), 161.5≦Vd≦189.2 (mm/s), and 4.98×10−6≦(T×Rz/Vd)≦1.99×10−5 (s).
    • 显影装置被设置为面向承载潜像的图像承载体。 显影装置包括承载用于显影潜像的显影剂的显影剂承载体。 显影剂包括母体颗粒和外部添加剂。 从母粒子释放的外部添加剂相对于100重量份母粒子的释放量T(重量份),显影剂承载体的表面粗糙度Rz(μm)和圆周速度Vd(mm / s )满足以下关系:1.326×10-1≦̸ T≦̸ 2.142×10-1(重量份),7.1×10-6& NlE; Rz& N1; 15.0×10-6(m),161.5& ; 189.2(mm / s),4.98×10-6≦̸(T×Rz / Vd)≦̸ 1.99×10-5(s)。
    • 13. 发明申请
    • Developing device and image forming apparatus
    • 显影装置和图像形成装置
    • US20090016782A1
    • 2009-01-15
    • US12216748
    • 2008-07-10
    • Yuki Matsuura
    • Yuki Matsuura
    • G03G15/08
    • G03G15/0818
    • A developing device is disposed facing an image bearing body that bears a latent image. The developing device includes a developer bearing body that bears a developer for developing the latent image. The developer includes mother particles and external additives. A liberation amount T (weight parts) of the external additives liberated from the mother particles with respect to 100 weight parts of the mother particles, a surface roughness Rz (m) of the developer bearing body, and a circumferential speed Vd (mm/s) of the developer bearing body satisfy the following relationships: 1.326×10−1≦T≦2.142×10−1(weight parts), 7.1×10−6≦Rz≦15.0×10−6(m), 161.5≦Vd≦189.2(mm/s), and 4.98×10−6≦(T×Rz/Vd)≦1.99×10−5(s).
    • 显影装置被设置为面向承载潜像的图像承载体。 显影装置包括承载用于显影潜像的显影剂的显影剂承载体。 显影剂包括母体颗粒和外部添加剂。 从母粒子释放的外部添加剂相对于100重量份母粒子的释放量T(重量份),显影剂承载体的表面粗糙度Rz(μm)和圆周速度Vd(mm / s )<?in-line-formula description =“In-line formula”end =“lead”?> 1.326x10-1 <= T <= 2.142×10-1(重量份) ,<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line formula”end =“lead”?> 7.1x10-6 < = Rz <= 15.0×10-6(m),<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> 161.5 <= Vd <= 189.2(mm / s),<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> 4.98x10-6 <=(TxRz / Vd)<= 1.99×10-5(s)<?in-line-formula description =“In-line Formulas” end =“tail”?>