| 摘要 |
PROBLEM TO BE SOLVED: To provide toner which does not cause "re-transfer" over a long period of time regardless of environment in a wide transfer current condition range (in particular, in a high transfer current condition) and can produce high image density. SOLUTION: The toner comprises at least toner particles and inorganic fine powder, wherein the inorganic fine powder at least has a number-average particle size of≥50 nm and <1,000 nm, at least has the maximum peak at 32.20°of Bragg angle (2θ±0.20°) in CuKαcharacteristic X-ray diffraction, has a half-width of X-ray diffraction peak of 0.20 to 0.30°at 32.20°of the Bragg angle (2θ±0.20°) and contains a composite oxide represented by [SrO]<SB>1-X</SB>[M<SB>2</SB>O<SB>3</SB>]<SB>X</SB>[TiO<SB>2</SB>] (in the formula, M denotes metal element selected from a group consisting of Al and Fe and X is 0.01 to 0.20). COPYRIGHT: (C)2009,JPO&INPIT
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