Electric heating – Heating devices – Combined with diverse-type art device
Reexamination Certificate
2005-12-13
2009-10-06
Fuqua, Shawntina (Department: 3742)
Electric heating
Heating devices
Combined with diverse-type art device
C219S619000, C219S130210, C219S497000, C219S499000, C219S501000, C219S481000, C219S508000, C219S505000, C399S069000, C399S070000
Reexamination Certificate
active
07598476
ABSTRACT:
A fusing apparatus in an image forming apparatus that heats a fusing unit by applying an induced current is provided. The flicker characteristics of the fusing apparatus are improved by gradually increasing the amount of induced current applied to the fusing unit for a predetermined amount of time so that the amount of induced current applied to the fusing unit is prevented from severely varying. The fusing apparatus comprises a fusing unit which is resistance-heated or induction-heated by applying an induced current and fuses toner onto paper using the heat. The fusing apparatus further comprises a pulse width modulation (PWM) signal generation unit which generates a PWM signal in response to the ON signal so that the amount of induced current input to the fusing unit gradually increases to a reference current.
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Chae Su-Kyoung
Chae Young-Min
Cho Durk-Hyun
Han Sang-Yong
Kim Hwan-Guem
Fuqua Shawntina
Roylance Abrams Berdo & Goodman L.L.P.
Samsung Electronics Co,. Ltd.
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