TONER

• US 20130309603A1
• Filed: 02/01/2012
• Published: 11/21/2013
• Est. Priority Date: 02/03/2011
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takahashi, Toru, Yamazaki, Katsuhisa, Moribe, Shuhei, Tsujimoto, Daisuke, Iwasaki, Yosuke, Fujimoto, Masami
• Application Number:
  US13/983,243
• Publication Number:
  US 20130309603A1
• Time in Patent Office: Days
• US Class Current: 430/109.1
• CPC Class Codes: G03G 9/0821 characterised by physical parameters magnetic parameters G03G9/083
• CPC Class Codes: G03G 9/08755 Polyesters
• CPC Class Codes: G03G 9/08795 characterised by their chemical properties, e.g. acidity, molecular weight, sensitivity to reactants
• CPC Class Codes: G03G 9/08797 characterised by their physical properties, e.g. viscosity, solubility, melting temperature, softening temperature, glass transition temperature

Abstract

A toner having toner particles, each of which contains a binder resin and a colorant, wherein in viscoelastic properties of the toner as measured with a rotating flat plate rheometer at a frequency of 6.28 rad/sec:

• • a storage elastic modulus at the temperature of 60° C. (G′60) is in a range from 1.0×10⁷ to 1.0×10⁹ (Pa), and
  • a maximal value (G′p) exists for the storage elastic modulus in a temperature range from 110° C. to 140° C., with this G′p being in a range from 5.0×10⁴ to 5.0×10⁶ (Pa).

Claims

1. A toner comprising toner particles, each of which contains a binder resin and a colorant, wherein:

in viscoelastic properties of the toner as measured with a rotating flat plate rheometer at a frequency of 6.28 rad/sec;

i) a storage elastic modulus at the temperature of 60°

C. (G′

60) is in a range from 1.0×

10⁷ to 1.0×

10⁹ (Pa), and

ii) a maximal value (G′

p) exists for the storage elastic modulus in a temperature range from 110°

C. to 140°

C., with this G′

p being in a range from 5.0×

10⁴ to 5.0×

10⁶ (Pa).

2. The toner according to claim 1, wherein:

in the viscoelastic properties of the toner as measured with a rotating flat plate rheometer at a frequency of 6.28 rad/sec,

the storage elastic modulus at the temperature of 180°

C. (G′

180) is in a range from 1.0×

10³ to 5.0×

10⁴ (Pa).