| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner applicable to a fast developing system and excellent in low-temperature fixability, heat-resistant storage property, and hot offset resistance. ! SOLUTION: The toner includes toner particles comprising a crystalline polyester resin (A), a crystalline polyester resin (B), a non-crystalline polyester resin (C), and a colorant. The crystalline polyester resin (A) has a crystal nucleating agent moiety at a molecular end; the non-crystalline polyester resin (C) has a softening point of 80°C or higher and 150°C or lower; and SP values Spa, SPb, SPc ((cal/cm3)1/2) of the crystalline polyester resin (A), the crystalline polyester resin (B) and the non-crystalline polyester resin (C), respectively, satisfy numeral expressions (1) 9.00≤SPa≤11.00, (2) -1.50≤SPc-SPa≤0.80, and (3) 0.10≤SPa-SPb≤2.00. ! COPYRIGHT: (C)2015,JPO&INPIT |
