Konica Minolta bizhub C658 Service Manual page 1878

bizhub C658/C558/C458/C368/C308/C258
[1]
[1] Fusing belt
[3] Paper separator claws (contact type)
13.3.5 Fusing temperature control
• Fusing temperature control uses the heating roller temperature sensor and the heating roller thermistor that detect the surface temperature
of the fusing belt to turn ON or OFF the fusing heater lamp as necessary.
The fusing heater lamp when turned ON heats the fusing belt to a set temperature.
[9]
[8]
[1] Fusing belt
[3] Fusing roller
[5] Heating roller
[7] Heating roller thermistor2 (TH2)
[9] Heating roller thermostat (TS1)
• *: Equipped to bizhub C368/C308/C258 only
(1) Fusing heater lamp
• The heating roller contains a fusing heater lamp assy in it. The fusing heater lamp turns ON to generate heat, which heats the heating
roller and fusing belt.
• The fusing heater lamp assy consists of two heaters, each having a unique heating range different from each other.
• The fusing heater lamp1 (long) * uniformly heats the entire area of the heating roller.
NOTE
▪ *: Only bizhub C458 dedicated for Japan contains both the fusing heater lamp1 (long) (FH1) and the fusing heater lamp3
(long) (FH3).
• The fusing heater lamp2 (short) heats only the central portion of the heating roller.
• The fusing heater lamp is turned ON or OFF according to the width of the paper and the surface temperature of the fusing belt.
• For a paper width of 209 mm or less, the fusing heater lamp2 is used to heat the central portion.
• For a paper width exceeding 209 mm, the surface temperature of the fusing belt is measured and the fusing heater lamp1 and the
fusing heater lamp2 are alternately turned ON.
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 13.
[2] [3] [4]
[1]
[7]
[6]
[5]
FUSING SECTION (bizhub C458/C368/C308/C258)
[2] Paper separator claws (noncontact type)
[4] Pressure roller
[2]
[3]
[4]
[2] Pressure roller
[4] Fusing heater lamp assy
[6] Heating roller thermistor1 (TH1)
[8] Heating roller temperature sensor (TEMS) *
- -
O-103