Patent ID: 6579653
Filing Date: 2003-06-17
Classification: G03G

Abstract:
A toner comprising a molecular weight maximum peak in a range of molecular weights from 2Ã—103 to 3Ã—104 in molecular weight distribution of GPC chromatogram, and a molecular weight maximum peak or shoulder in a range of 3Ã—104 to 1Ã—106,wherein said molecular weight maximum peak or shoulder located on a range of molecular weights from 3Ã—104 to 1Ã—106 is obtained by kneading a toner composition containing a binder resin so that a high molecular weight component of the binder resin is converted into a low molecular weight component by thermal or mechanical energy exerted at the time of kneading, and the binder resin is a resin having a molecular weight maximum peak in a range of molecular weights from 2Ã—103 to 3Ã—104 in molecular weight distribution of GPC chromatogram, and a component having a molecular weight of not less than 3Ã—104, as a component located in high molecular weight range, in an amount of not less than 5% based on the entire binder resin.