Fixing device
AssigneeCanon Kabushiki Kaisha
InventorsTomoya Tateishi, Masafumi Maeda, Takashi Narahara, Toru Imaizumi, Yasuhito Minamishima
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Abstract
In a fixing device according to an exemplary embodiment of the present invention, a projection portion projected in a direction opposite to a direction biased by the biasing member, from a body part of the biasing member, is provided in a biasing member configured to push a thermosensitive member which receives heat from a heater, toward the heater, so that a crack in the heater at the time of an abnormal temperature rise is prevented.
Claims6
A fixing device configured to thermally fix an unfixed image formed on a recording material to the recording material, the fixing device comprising:
- an elongated heater;
- a holder formed from a thermoplastic resin which holds the heater in a longitudinal direction of the heater;
- a reinforcing member which is in contact with the holder in the longitudinal direction and which reinforces the holder;
- a thermosensitive member which is provided in a space between the holder and the reinforcing member and which receives heat from the heater through a through-hole provided in the holder;
- and
- a biasing member which biases the thermosensitive member toward the heater,
- wherein the biasing member includes a projection portion which is projected in a direction opposite to a direction biased by the biasing member, from a body part of the biasing member, and
- wherein the projection portion is not in contact with the reinforcing member when the device is operating normally, and the projection portion contacts the reinforcing member, regulates a movement of the thermosensitive member, and restricts deflection of the heater when the holder becomes softened and the heater is deflected.
Dependencies are inferred from the claim text.