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US 8,078,080 B2Granted
Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasashi Sawada, Yoichi Furuyama
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a heat source, a toner containing member containing toner, and an electric fan for generating air flow in an air flow path formed between the heat source and the toner containing member. In the image forming apparatus, a temperature of the heat source reaches a glass transition point of the toner. After the electric fan is changed from a driving state to a rest state, a phase transition member for absorbing heat is disposed in a heat transfer path, in which heat transfers, from the heat source to the toner containing member.
Claims8
An image forming apparatus comprising:
- a toner image forming device configured to form a toner image on a sheet using toner, said toner image forming device having a toner containing portion configured to contain the toner;
- an image heating device configured to heat the toner image on the sheet;
- a fan configured to flow air in an air flow path between said toner containing portion and said image heating device;
- and
- a phase transition material, disposed at a position closer to said toner containing portion than said image heating device with respect to said air flow path, configured to cool said toner containing portion with a phase transition from a solid phase to a liquid phase when said fan is stopped.
2 more elements
Dependencies are inferred from the claim text.