| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing device which can improve fixing performance and be miniaturized by specifying a direction of a chip part.SOLUTION: A fixing device 100 comprises: a cylindrical fixing film 110; a heating element (a halogen lamp 120); a nip plate 130; a reflector 140; and a backup member (a pressure roller 150). The heating element is a heater formed by enclosing gas (halogen gas 123) and a heat source (a filament 122) in a glass tube 121, and a chip part 124 formed when enclosing the gas is provided in the glass tube 121 so as to project outward in a radial direction from a surface of the glass tube 121. The chip part 124 is disposed to point a predetermined direction so that size L1 of a cross-sectional shape of the glass tube 121 including the tip part 124 in an opposing direction where the nip plate 130 and the heater are opposite to each other is larger than size L2 of a cross-sectional shape in a direction orthogonal to the opposing direction. |
