| 摘要 |
PURPOSE:To secure good fine line reproducibility in a stable manner while preventing any toner fusion to a sensitizer and charging unevenness due to the contamination of a contact charging member. CONSTITUTION:This developer is one that features these of resin grains A, whose mean grain size is 0.03-1.0mum, preferably, containing a styrene monomer unit as much as more than 51wt%, and resin fine grains B, whose mean grain size is 1.0-5mum, preferably containing an acrylic monomer unit as much as more than 51wt%, plus inorganic powder C, all added to a toner grain surface, respectively. |
