Patent 7704066 was granted and assigned to RICOH COMPANY,LTD. on April, 2010 by the United States Patent and Trademark Office.
A heat insulating stamper is disclosed. The heat insulating stamper includes an uppermost section made of a metal material, a lowermost section made of the same material as the uppermost section, and a middle section having a heat conductivity lower than the uppermost section. The middle section includes the same metal material as the uppermost section and the lowermost section, and heat insulating portions.