Patent ID: 9709912
Date: 2017-07-18
CPC Classifications: G03G

Claim:
1. A toner, comprising: a crystalline binder resin; and a non-crystalline binder resin, wherein: a glass transition temperature of all the non-crystalline binder resin is not lower than 55° C.; the toner has a thermal property such that when the toner is heated to 150° C. for 60 minutes after being firstly heated from 30° C. to 60° C. followed by cooling from 60° C. to 0° C. in differential scanning calorimetry (DSC), the toner has a clear peak specific to melting of the crystalline resin at a temperature T1, and when the toner is heated to 150° C. for 60 minutes after being firstly heated from 30° C. to 80° C. followed by cooling from 80° C. to 0° C. in the differential scanning calorimetry (DSC), no peak can be observed specific to melting of the crystalline resin at a temperature not higher than T1; the melting point (endothermic peak temperature) of the crystalline binder resin is from 60° C. to 70° C.; the crystalline binder resin has an average particle diameter of not greater than 0.9 μm as dispersed in the toner; and the non-crystalline binder resin has a weight average molecular weight ranging from 1,000 to 10,000.