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    • 4. 发明公开
    • METHOD OF PRODUCING TONER
    • 生产碳粉的方法
    • EP2646879A1
    • 2013-10-09
    • EP11845857.9
    • 2011-11-21
    • Canon Kabushiki Kaisha
    • AOKI, KenjiWATANABE, ShuntaroKAYA, TakaakiOKAMOTO, AyakoKINUMATSU, TetsuyaTANI, AtsushiKASUYA, Takashige
    • G03G9/087
    • G03G9/0804G03G9/0815G03G9/08755G03G9/08764G03G9/08771G03G9/08788G03G9/08797
    • The present invention provides a toner excellent in low-temperature fixability and also excellent in heat-resistant storage property, offset resistance, and durability. In a process for producing a toner containing toner particles by emulsion aggregation, each toner particle includes a binder resin of which a main component is a block polymer having a crystal structure, a colorant, and a release agent; the binder resin includes polyester as a main component; the rate of a portion capable of forming a crystal structure to the binder resin is 50 to 80 mass%; a peak temperature Tp of a maximum endothermic peak attributed to the binder resin is 50 to 80°C in endothermic amount measurement of the toner with a differential scanning calorimeter (DSC); and fused particles are heated at a heating temperature t (°C) satisfying Tp'-15.0≤ t ≤ Tp'-5.0 for at least 0.5 hr.
    • 本发明提供低温定影性优异且耐热存储性,耐反印性和耐久性也优异的调色剂。 在通过乳液聚集制造含有调色剂颗粒的调色剂的方法中,各调色剂颗粒包括主要组分为具有晶体结构的嵌段聚合物,着色剂和防粘剂的粘合剂树脂; 粘合剂树脂包含聚酯作为主要组分; 能够与粘合剂树脂形成结晶结构的部分的比率为50〜80质量%。 用差示扫描量热计(DSC)测量调色剂的吸热量时,归因于粘结剂树脂的最大吸热峰的峰值温度Tp为50至80℃; 在满足Tp'-15.0≤t≤Tp'-5.0的加热温度t(℃)下加热熔融颗粒至少0.5小时。
    • 5. 发明公开
    • TONER
    • 碳粉
    • EP2596405A1
    • 2013-05-29
    • EP11809716.1
    • 2011-07-14
    • Canon Kabushiki Kaisha
    • AOKI, KenjiTANI, AtsushiKAYA, TakaakiOKAMOTO, AyakoKASUYA, Takashige
    • G03G9/087
    • G03G9/08755G03G9/0804G03G9/08788G03G9/08795G03G9/08797
    • In the measurement of an endothermic amount of a toner, (1) an endothermic peak temperature (Tp) derived from the binder resin is 50°C or higher and 80°C or lower; (2) a total endothermic amount (ΔH) derived from the binder resin is 30 [J/g] or more and 125 [J/g] or less based on mass of the binder resin; (3) when an endothermic amount derived from the binder resin from an initiation temperature of an endothermic process to Tp is represented by ΔH
      Tp [J/g], ΔH and ΔH
      Tp satisfy formula (1) below; and (4) when an endothermic amount derived from the binder resin from the initiation temperature of an endothermic process to a temperature 3.0°C lower than Tp is represented by ΔH
      Tp-3 [J/g], ΔH and ΔH
      Tp-3 satisfy formula (2) below. 0.30 ≤ ΔH
      Tp-3 / ΔH ≤ 0.50 (1) 0.00 ≤ ΔH
      Tp-3 / ΔH ≤ 0.20 (2)
    • 在测量调色剂的吸热量时,(1)来自粘合剂树脂的吸热峰温度(Tp)为50℃以上且80℃以下; (2)以粘合剂树脂的质量为基准,来自粘合剂树脂的总吸热量(ΔH)为30 [J / g]以上且125 [J / g]以下; (3)当ΔHTp [J / g]表示从吸热过程的起始温度到Tp的粘合剂树脂产生的吸热量时,ΔH和ΔHTp满足下面的公式(1); (4)当ΔHTp-3 [J / g]表示从吸热过程的起始温度到低于3.0℃的温度的来自粘合剂树脂的吸热量,ΔH和ΔHTp-3满足 公式(2)。 0.30≤ΔHTp-3 /ΔH≤0.50(1)0.00≤ΔHTp-3 /ΔH≤0.20(2)