Fixing device

A fixing device configured to fix an image to a recording material, the fixing device comprising:

• a cylindrical belt;
• a nip portion forming member configured to make contact with an inner surface of the belt;
• a backup member configured to form a nip portion with the nip portion forming member via the belt;
• a halogen heater arranged in a hollow portion of the belt to radiate radiation light toward the nip portion forming member, the halogen heater including a slender bulb filled with gas, the bulb including, at a longitudinal end of the bulb, a sealing portion for sealing the bulb, the sealing portion being a plate-like portion including a surface portion;
• and
• a reflection member configured to surround the halogen heater when viewed in the longitudinal direction of the halogen heater, the reflection member being long in a longitudinal direction of the halogen heater, the reflection member overlapping with the sealing portion in the longitudinal direction, the reflection member having a cutout portion or a hole portion in an area opposed to the surface portion of the sealing portion.

A fixing device configured to fix an image to a recording material, the fixing device comprising:

• a cylindrical belt;
• a nip portion forming member configured to make contact with an inner surface of the belt;
• a backup member configured to form a nip portion with the nip portion forming member via the belt;
• a halogen heater arranged in a hollow portion of the belt to radiate radiation light toward the nip portion forming member, the halogen heater including a slender bulb filled with gas, the bulb including, at a longitudinal end of the bulb, a sealing portion for sealing the bulb;
• and
• a reflection member configured to reflect the radiation light of the halogen heater toward the nip portion forming member, the reflection member being long in a longitudinal direction of the halogen heater, the reflection member being configured so that the longitudinal end lies on an inner side of the sealing portion in the longitudinal direction of the halogen heater.