Invention Grant
- Patent Title: Image forming method employing toner with external additive
- Patent Title (中): 使用外部添加剂的调色剂的成像方法
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Application No.: US417227Application Date: 1995-04-05
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Publication No.: US5733702APublication Date: 1998-03-31
- Inventor: Kenji Okado , Toshiyuki Ugai , Ryoichi Fujita , Tsuyoshi Takiguchi , Yasuhiro Ichikawa
- Applicant: Kenji Okado , Toshiyuki Ugai , Ryoichi Fujita , Tsuyoshi Takiguchi , Yasuhiro Ichikawa
- Applicant Address: JPX Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JPX Tokyo
- Priority: JPX4-163398 19920601
- Main IPC: G03G9/097
- IPC: G03G9/097 ; G03G21/00
Abstract:
An image forming method is conducted by forming a toner image on a latent image bearing member containing an organic photoconductive material. The latent image bearing member includes a photosensitive layer containing an organic photoconductive material and a protective layer which contains fluorine-containing resin particles in an amount from 5% by weight to 40% by weight. The toner contains toner particles and external additives. The external additives include titanium oxide particles having a weight average particle diameter from 0.01 .mu.m to 0.2 .mu.m having been subjected to hydrophobic treatment, organic resin particles having a weight average particle diameter from 0.02 .mu.m to 0.5 .mu.m, and inorganic compound particles having a weight average particle diameter from 0.5 .mu.m to 2.5 m. The inorganic compound particles may be specific titanates, oxides or carbonate. The external additives are added in an amount satisfying the relationship: (A):(B)=2:1 to 10:1 (A):(C)=1:1 to 5:1 The toner contains toner particles having a particle diameter from 2 .mu.m to 5 .mu.m in an amount from 15% by number to 40% by number. The toner image is transferred to a transfer medium and the latent image bearing member is then cleaned.
Public/Granted literature
- US5061698A Aqueous boron-containing compositions Public/Granted day:1991-10-29
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