| 摘要 |
PROBLEM TO BE SOLVED: To provide toner excellent in low temperature fixing property, particularly excellent in offset resistance at high temperature and excellent in fixing strength and having little aggregation, and to provide a method for manufacturing the toner. SOLUTION: The toner contains a polymer as a binder resin which is obtained by bulk polymerization of a compound having two or more isocyanate groups and a compound having two or more functional groups having active hydrogen reactive with the above isocyanate groups and which has urethane coupling or urea coupling in the main chain, 1,500 to 20,000 number average molecular weight (Mn) basing on polystyrene as a reference and 5 to 40 mgKOH/g acid value. COPYRIGHT: (C)2004,JPO |
