Electrophotography – Image formation – Fixing
Patent
1999-01-06
2000-06-20
Chen, Sophia S.
Electrophotography
Image formation
Fixing
219619, 219671, 399 68, 399334, G03G 1520
Patent
active
060787813
ABSTRACT:
A fixing device of the present invention includes a first roller that is made of a conductive material, and is rotated and driven; a second roller that is in contact with the first roller in the pressed state; and an induction heating unit that is arranged at the first roller side and concentrates the induction heating to the nip portion of the first roller and change a developer image formed on a fixing medium to a fixed imaged. This induction heating unit of the fixing device is made of a high permeable material, has a core that is open at the surface opposite to the first roller and a coil wound round the core and generates magnetic flux on the core when high frequency current is supplied to the core and has a high projecting portion so that a part of the core closes the first roller.
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Kinouchi Satoshi
Takagi Osamu
Chen Sophia S.
Kabushiki Kaisha Toshiba
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