| 摘要 |
A toner for developing electrostatic images is constituted from a binder resin, and a metal salt or a metal complex. Through the various interaction between the components, the toner is provided with unique viscoelastic properties including: a dynamic modulus G min 120-200 at 120 - 200 <o>C of 2x10<3> or higher to below 5x10<5> [dyne/cm<2>] as measured in the frequency range of 1x10<-><2> - 1 (Hz); a loss modulus G sec 120-200 at 120 - 200 <o>C of 2x10<3> or higher to below 5x10<5> [dyne/cm<2>] as measured in the frequency range of 1x10<-><2> - 1 (Hz); a dynamic modulus G min 200 at 200 <o>C and a frequency f satisfying an approximated linear relationship according to the least squares method of: logG min 200 = a.log.f + log b, wherein a denotes a positive number of 0.25 or smaller and b denotes a constant; and a ratio (G min 200)/(G min 120) of below 0.25 wherein (G min 200) denotes a dynamic modulus at 200 <o>C and (G min 120) denotes a dynamic modulus at 120 <o>C respectively at a frequency of 1 (Hz). |
