Abstract: A non-magnetic single-component toner comprises: silica A having a specific surface area of 30 to 70 m2/g as determined by a BET method, and having a surface which is at least treated with aminosilane, silica B having a specific surface area of 100 m2/g or more, and having a surface which is treated with silicone oil, silicone oil, and toner particles containing a binder resin and a colorant wherein silica A, silica B, silicon oil are adhered to surfaces of the toner particles, so that the toner that has suitable charging properties and anti-fusing and long life under all environmental atmosphere, and allows the obtaining of stable images having minimal back ground fogging, proper image density, no image density unevenness, and no voids in image (particularly on thick paper), and superior solid black reproducibility.

Abstract: A non-magnetic single-component toner comprises: silica A having a specific surface area of 30 to 70 m2/g as determined by a BET method, and having a surface which is at least treated with aminosilane, silica B having a specific surface area of 100 m2/g or more, and having a surface which is treated with silicone oil, silicone oil, and toner particles containing a binder resin and a colorant wherein silica A, silica B, silicon oil are adhered to surfaces of the toner particles, so that the toner that has suitable charging properties and anti-fusing and long life under all environmental atmosphere, and allows the obtaining of stable images having minimal back ground fogging, proper image density, no image density unevenness, and no voids in image (particularly on thick paper), and superior solid black reproducibility.