| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner which causes little agglomeration or fusion, is excellent in fluidity and transportability and ensures little variation of image quality even in continuous use or long-term use. SOLUTION: In a masterbatch comprising a colorant and a polyester resin, a polyester resin is used which has physical properties within the range defined by straight lines represented by expression 1: Sp=4Tg-110, expression 2: Sp=4Tg-170, expression 3: Sp=90 and expression 4: Sp=120 in coordinates of glass transition temperature (Tg) (x-axis) and softening point (Sp) (y-axis). The toner is prepared by using the resulting masterbatch. COPYRIGHT: (C)2004,JPO |
