TONER FOR ELECTROSTATIC CHARGE DEVELOPMENT
To provide a toner, which contains a binder resin, a colorant, and a releasing agent, wherein the binder resin contains a low molecular weight resin component, where the low molecular weight resin component has a resin softening coefficient (A), represented by the following formula (1), satisfying A...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | To provide a toner, which contains a binder resin, a colorant, and a releasing agent, wherein the binder resin contains a low molecular weight resin component, where the low molecular weight resin component has a resin softening coefficient (A), represented by the following formula (1), satisfying A > 0.165, and has storage elastic modulus (dyne/cm 2 ) G'(Tfb) satisfying G'(Tfb) ‰¤ 1 × 10 4 where Tfb is a flow onset temperature (°C) of the low molecular weight resin component as measured by a capillary rheometer: A = lnG¹ r ¢ 1 - lnG¹ r ¢ 2 / T ¢ 1 - t ¢ 2 (where T1 is temperature (°C) at which storage elastic modulus G'(r1) is 1×10 5 (dyne/cm 2 ) and T2 is temperature (°C) at which storage elastic modulus G'(r2) is 1×10 3 (dyne/cm 2 ) as measured by means of a viscoelasticity measuring device with measuring frequency of 1 Hz, and measuring distortion of 1 deg; any | | represents an absolute value.) |
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