| 摘要 |
PURPOSE:To form an image having stable image quality with good fidelity in a developing method of an electrostatic latent image using a one-component type nonmagnetic toner by using a toner compounded with specific fine silica powder. CONSTITUTION:A layer of an insulating nonmagnetic toner 5 is formed on a toner carrying body 2 disposed apart at a prescribed space from an electrostatic latent image holding body 1 more thinly than said space by a coating means 4 (a symbol 3 denotes a hopper and 6 a biasing power source for development) and the electrostatic latent image on the body 1 is developed by transferring selectively the toner onto said body. The insulating nonmagnetic toner compounded with about 0.01-20wt% the fine powder obtd. by treating the fine silica powder formed by vapor phase oxidation of a silicon halide compd. with a silane coupling agent (e.g.; gamma-aminopropyltriethoxysilane) and subjecting further the powder to a hydrophobing treatment so as to attain 30-80 degree of hydrophobicity (methanol titration test method) is used in the above-mentioned method. |
