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US 2004/0165916 A1Published application
Fixing mechanism for use in image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorsOsamu Takagi, Satoshi Kinouchi
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Abstract
In a fixing mechanism which heats a fixation member by generating heat in an endless member by using an induction current obtained from a current flowing through an induction coil, the present invention is characterized in that the induction coil is divided into a plurality of coils in a direction vertical to a moving direction of the fixation member and a coil to which power is supplied is switched according to needs.
Claims1
A heating mechanism comprising:
- a first coil body and a second coil body, each of which coil bodies increases a temperature of an object;
- a first temperature detection mechanism and a second temperature detection mechanism, said first temperature detection mechanism detecting a temperature obtained when a predetermined output is supplied to said first coil body and a temperature of said object is increased, and said second temperature detection mechanism detecting a temperature obtained when said predetermined output is supplied to said second coil body and a temperature of said object is increased;
- and
- an output control mechanism capable of alternately supplying said predetermined output to said first coil body and said second coil body,
- wherein said output control mechanism continuously supplies said predetermined output to said first coil body until said first temperature detection mechanism detects that a temperature in an area of said object which is increased by said first coil body reaches a predetermined temperature when a temperature of said object is increased by said first coil body, and no supply said predetermined output to said second coil body while said predetermined output is supplied to said first coil body.
2 more elements
Dependencies are inferred from the claim text.