| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of precisely quantifying the toner concentration in a toner dispersion solution, and to provide a method of manufacturing toner-containing polyester, having a stable color which uses the same. SOLUTION: (1) For quantifying the toner concentration in the toner dispersion solution, the toner dispersed solution and an organic solvent are brought into contact, to extract the toner by the organic solvent, and the absorbance of the extracted solution is measured. (2) The method of manufacturing toner-containing polyester includes a process of preparing the toner dispersion solution, a process of mixing the toner dispersion solution with a reaction system, a process of esterification or an ester exchange reaction, and a polycondensation process. In the process of mixing the toner dispersed solution with a reaction system, the toner concentration in the toner dispersion solution is quantified by the method described in (1), and based on the result, the supply of the toner dispersed solution and/or the concentration of the toner dispersion solution preparation is controlled, such that addition of the toner to a polymer produced becomes a predetermined quantity. COPYRIGHT: (C)2004,JPO&NCIPI
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