초록 ▼

An image fixing roller includes an exothermic phase transition layer which performs a plurality of phase transitions repeatedly from an amorphous state to a crystalline state. The exothermic phase transition layer may include a plurality of exothermic phase transition materials, or a plurality of ex

An image fixing roller includes an exothermic phase transition layer which performs a plurality of phase transitions repeatedly from an amorphous state to a crystalline state. The exothermic phase transition layer may include a plurality of exothermic phase transition materials, or a plurality of exothermic phase transition component layers, each of which exothermic phase transition material or component layer has a different crystallization initiation temperature (Tci), a different exothermic peak temperature (Tcp) and a melting point temperature which is higher than that of a toner fixing temperature. An image fixing apparatus using the above-mentioned image fixing roller and a method of fixing toner images on an image receiving material, using the image fixing roller are proposed.

대표청구항 ▼

[ What is claimed is:] [1.] A heating apparatus for heating a material to a predetermined temperature, comprising:1) a core;2) a heating element; and3) an exothermic phase transition layer formed on said core, which performs a plurality of phase transitions repeatedly from an amorphous state to a cr

[ What is claimed is:] [1.] A heating apparatus for heating a material to a predetermined temperature, comprising:1) a core;2) a heating element; and3) an exothermic phase transition layer formed on said core, which performs a plurality of phase transitions repeatedly from an amorphous state to a crystalline state, comprising a plurality of component exothermic phase transition layers, each component layer configured to perform reversible phase transition from an amorphous state to a crystalline state with liberation of crystalline heat therefrom, and vice versa, and having a different crystallization initiation temperature (Tci), a different exothermic peak temperature (Tcp), and a melting point higher than said predetermined temperature.