Patent ID: 6174639
Filing Date: 2001-01-16
Classification: G03G,Y10S

Abstract:
A positive charging one-component non-magnetic color toner comprising at least a fixing resin, a coloring agent, a releasing agent and a positive charging electric charge controlling resin, whereinthe fixing resin is made of a polyester resin having an acid value of not more than 5 KOHmg/g, a hydroxyl value of not more than 9 KOHmg/g, a weight-average molecular weight of 7000 to 20,000 and a number-average molecular weight of 1,000 to 6,000, andthe releasing agent is a polyolefine having an acid value of not more than 10 KOHmg/g and a weight-average molecular weight of 8,000 to 15,000, a proportion of a polyolefine having a particle diameter of not less than 1.5 .mu.m among polyolefines dispersed in the toner being within 1% in terms of the number.