Konica Minolta bizhub C658 Service Manual page 1880

bizhub C658/C558/C458/C368/C308/C258
[1]
[5]
[1] Machine interior temperature 18 °C or less
[3] Absolute humidity, specified value or more
[5] Warm-up at low temperatures
[7] Warm-up at ordinary temperatures
(4) Temperature control during pre-standby
• After the warm-up completion temperature is reached, control is then passed onto the pre-standby process.
• The temperature control in the pre-standby state turns ON or OFF the fusing heater lamp as necessary in order to maintain the fusing
belt temperature at a level that enables printing.
• A print job, when received during the pre-standby state, can be started without waiting.
(5) Temperature control during stand-by
• If no print request is received after the temperature control in the pre-standby state is started, control is passed onto the standby process.
• The temperature control in the standby state maintains the fusing belt temperature at a level lower than the temperature that enables
printing.
• The control is intended to shorten time it takes the temperature to reach the printable level when a print request is received.
• An overshoot preventive process may be performed before control is passed onto the temperature control in the standby state.
• The fusing motor repeats rotating (at low speed) and stopping for 30 minutes after the standby starts.
After the 30-min. period, the fusing motor is deenergized.
(6) Temperature control during the print cycle
(a) Temperature control
• The machine enters a print state as it receives a print control and carries out a print cycle at a set temperature corresponding to the
type of paper selected for the job.
• The fusing temperature is measured during the print cycle and temperature control suitable for the print condition is performed
accordingly.
(7) Energy save mode
• The machine enters the energy save mode from any standby state to thereby reduce power consumption (TEC value).
• The energy save mode may be either the low power mode or sleep mode, whichever is enabled depending on the set conditions.
NOTE
TEC value (Typical Electricity Consumption):
• Energy saving criteria for copiers and printers to comply with the Energy Start program.
• Power consumption (kWh) at the office assuming operation of a product for one week (5 working days + 2 holidays) is
calculated from the print speed and power consumption of the product.
(a) Temperature control during low power mode
• To reduce power consumption in the low power mode, the surface temperature of the fusing belt is made lower than the controlled
temperature under "temperature control during the standby state".
• In the low power mode, the printable temperature can be recovered within a period of time shorter than warm-up.
(b) Temperature control during sleep mode
• To reduce power consumption during the sleep mode, power to the fusing heater lamp is shut down to stop heating the fusing belt.
• If the fusing belt temperature is decreased to room temperature, the printable temperature can be recovered within the same period of
time as that of warm-up.
(8) Fusing-related control
• The following types of control are available as they relate to fusing temperature:
• For detailed setting method, see each item.
[2]
[4]
[3]
[6] [7]
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 13.
FUSING SECTION (bizhub C458/C368/C308/C258)
[2] Machine interior temperature exceeding 18 °C
[4] Absolute humidity, less than the specified value
[6] Warm-up under high humidity condition
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