Fusing roller
 A fusing roller of the type having a thin resistance heating layer near its surface has a core made of a thermally and electrically insulative material, such as glass, which has a coefficient of thermal expansion comparable to that of the resistance heating layer. The roller can then withstand a high temperature curing process for other layers without separation of the resistance layer from the core. 
Eastman Kodak Company
G
G03G
inventional
Carl T. David A. Mark A.
Urban Glocker Lewis