Olivetti d-Color MF 4003, Руководство по обслуживанию

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d-Color MF4003/MF3303
P THEORY OF OPERATION > 1.
d-Color MF4003/MF3303
P-48
(b) Temperature control chart
*An example when a machine is warmed up under a normal ambient condition
0
[1] [3] [7] [10]
[2] [6] [8] [9] [11] [5]
[12]
[4]
[1] Main power switch ON [2] Warm-up control
[3] Warm-up completed [4] Post-warm-up control
[5] Pre-standby control [6] Standby control (including a countermeasure against
overshoot)
[7] Print request [8] Print control
[9] Standby [10] Entry in sleep mode
[11] In sleep state [12] Fusing belt temperature
(c) Fusing temperature control during warm-up
• To prevent image fixability from being degraded due to environmental changes when the main power switch is turned ON, three
different warm-up modes are incorporated for fusing temperature control.
• The warm-up mode is performed “at low temperatures”, “at ordinary temperatures”, or “under high humidity condition”.
• In the warm-up mode under high humidity condition, the warm-up time is extended to prevent paper from curling and the difference in
temperature between the fusing belt and fusing pressure roller is minimized.
• When the temperature of the fusing belt reaches the warm-up completion temperature, control is passed onto the pre-standby process.
Warm up mode Environment
Machine interior temperature Machine interior humidity (absolute humidity
*1)
Warm-up at low temperatures Less than 18 degrees Not judged by absolute humidity
Warm-up at ordinary temperatures 18 degrees or more to 32 degrees or less Less than a predetermined value
Warm-up under high humidity condition More than 32 degrees Predetermined value or more
• *1: Absolute humidity: water content contained in the air (1 m3) as steam regardless of the temperature
[5] [6]
[7]
[1]
[3]
[2]
[4]
Service Manual Y119930-3