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US 7,704,066 B2Granted
Heat insulating stamper structure
AssigneeRicoh Company, Ltd.
InventorsShigeru Fujita, Kazuhiro Kotaka, Nobuhiro Tanaka
Life of this patent
Estimating the term…
Abstract
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.
Claims8
A heat insulating stamper with a pattern on a surface, comprising:
- an uppermost section made of a metal material;
- a lowermost section made of a metal material;
- and
- a middle section having a heat conductivity lower than the uppermost section,
- wherein the metal material of the lowermost section is same as the metal material of the uppermost section, and
- wherein heat insulating portions are dispersed in a metal material forming the middle section, and a concentration of the heat insulating portions is higher in a region of the middle section directly below the uppermost section than in other regions of the middle section and lowers toward the lowermost section such that only the metal material forming the middle section exists on the lowermost section.
3 more elements
Dependencies are inferred from the claim text.