Invention Grant
US08168363B2 Toner and producing method thereof, developer, two-component developer, developing device and image forming apparatus
有权
调色剂及其制造方法，显影剂，双组分显影剂，显影装置和图像形成装置
- Patent Title: Toner and producing method thereof, developer, two-component developer, developing device and image forming apparatus
- Patent Title (中): 调色剂及其制造方法，显影剂，双组分显影剂，显影装置和图像形成装置
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Application No.: US12351129Application Date: 2009-01-09
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Publication No.: US08168363B2Publication Date: 2012-05-01
- Inventor: Yasuo Imura , Hiroshi Onda , Yoritaka Tsubaki , Saori Yamada
- Applicant: Yasuo Imura , Hiroshi Onda , Yoritaka Tsubaki , Saori Yamada
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Nixon & Vanderhye P.C.
- Priority: JPP2008-003747 20080110
- Main IPC: G03G5/00
- IPC: G03G5/00
Abstract:
A toner is so configured as to satisfy the following conditions: (b)/(a) is from 0.90 to 1.02, (a) is from 140 to 150 and the average value in the entire toner particles of a shape factor SF-2 of the toner particles is larger than 140, where (a) represents a shape factor SF-2 showing the degree of irregularity on the surface of toner particles having a particle size D75V or less which is a particle size at which a cumulative volume from a large particle size side in particle size distribution by volume is 75%, and (b) represents a shape factor SF-2 of toner particles having a particle size D25V or more which is a particle size at which a cumulative volume from a large particle size side in particle size distribution by volume is 25%.
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