Patent 7138214 was granted and assigned to Konica Minolta on November, 2006 by the United States Patent and Trademark Office.
A positively chargeable toner, comprising:toner particles that are formed by allowing resin particles containing an amino-group and colorant particles to aggregate,the toner having an amine value in a range of 5 to 35 KOHmg/g, being excellent in fixing properties, heat resistant storing property and chargeability.