Fixing Unit; Composition; Mechanisms - Minolta Di551 Service Manual

FIXING UNIT

[1] Composition

3
1. Fixing unit cover (upper)
2. Pressure release lever
3. Fixing claw unit (upper)
4. Fixing claw (upper)
5. Cleaning web wind-up shaft
6. Pressure roller
7. Cleaning web unwinding shaft
8. Cleaning web
9. Fixing roller (upper)

[2] Mechanisms

Mechanism
Fixing
Heat source *1
Cleaning *2
Upper roller
Lower roller
Separation
Temperature detection
Overheat protection
Neutralizing
Pressure release
Exit path selection
Decurler *3
Jam detection *4
4
1
18
17
2
16
10. Fixing heater lamp/1 (L2)
11. Fixing heater lamp/2 (L3)
12. Fixing heater lamp/3 (L4)
13. Fixing roller (lower)
14. Fixing claw (lower)
15. Exit roller
16. Decurler roller
17. Restriction shaft
18. Reverse/exit selection gate
Pressure + Heat roller
Heater lamp(Upper rollers: Two, Lower roller: One)
Upper roller: Cleaning web (containing silicon oil)
Aluminum + Teflon coating
Silicon rubber + PFA tube
Separation claws (six upper and three lower claws)
Upper roller: - Noncontact type thermistor (for control) TH1
- Contact type thermistor (for fault detection) TH2
Upper roller: - Noncontact type thermostat (for fault detection) TS1
Lower roller: - Noncontact type thermostat (for fault detection) TS2
Neutralizing brush
Pressure release shaft and spring
Reverse/exit selection gate
Decurler roller + Restriction shaft
Jam detection plate + Actuator + Photo sensor
2-O-1
5 6 7
15
14 13
Method
FIXING UNIT
8
9
10
11
12