| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner capable of obtaining a good image without causing fogging and image unevenness in half tone image, even when used over a long term in high speed printing under a low temperature and low humidity environment. <P>SOLUTION: A toner includes a toner particles containing binder resin and colorant, silica particles (A), and inorganic fine powder. The silica particles (A) have a volume average particle size (Dv) of primary particles of 70 nm or more and 500 nm or less, a variation coefficient of volume particle size distribution of 23% or less, an average fine pore diameter of 5.0 nm or more and 25.0 nm or less, and a total fine pore volume measured in the range of fine pore diameter of a range of 1.7 nm or more and 300.0 nm or less of 0.02 cm<SP POS="POST">3</SP>/g or more and 1.20 cm<SP POS="POST">3</SP>/g or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
