Induction heating fixing device having a central processing unit, and image forming apparatus using the fixing device
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United States of America Patent
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-
Nov 20, 2001
Grant Date -
N/A
app pub date -
Dec 28, 1999
filing date -
Dec 28, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fixing device in an image forming apparatus having various functions such as print data reception, FAX transmission/reception, and the like, has a member to be heated (1), an excitation coil (2) which is arranged in the vicinity of the member to be heated (1), and heats the member to be heated (1) by induction upon receiving a current, an induction heating control circuit (7) for controlling current supply to the excitation control (2), and a main body control circuit (14) for controlling the operation of the image forming apparatus main body. The induction heating control circuit (7) has a central processing unit (9) independently of the main body control circuit (14). The main body control circuit 14 can control the excitation control 92) by supplying a heating ON/OFF signal to the central processing unit without directly controlling current supply to the excitation coil (2). For this reason, a lamp heating means can be used in place of an induction heating means without changing any hardware components of the image forming apparatus main body including the main body control circuit 14.
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