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Chapter 8
8-2
F-8-2
8.2 Various Control Mechanisms
8.2.1 Controlling the Speed of the Fixing Film
8.2.1.1 Controlling the Fixing Film Speed
0017-5470
iR2022i / iR2025 / iR2030 / iR2018 / iR2022 / iR2018i
The rotation cycle is measured with reference to the mark provided at the end of the fixing film to rotate the fixing drive motor at the optimum speed, thus keeping
the paper feed speed constant. Measurement of the cycle of each rotation (excluding the initial rotation and post-rotation) of the fixing drive motor starts when 1
second lapses after the motor starts rotating and ends when the trailing edge of the last sheet has passed through the fixing nipper.
F-8-3
[1] Film rotation detection signal (FILM_SENS): Set to 1 and 0 alternately when the fixing film is rotating.
[2] Rotation cycle measurement mark
8.2.2 Controlling the Fixing Film Temperature
8.2.2.1 Outline
0017-5473
iR2022i / iR2025 / iR2030 / iR2018 / iR2022 / iR2018i
The surface temperature of the fixing heater is detected to control the fixing heater drive signal so that the fixing heater temperature becomes the target temperature.
The temperature of the fixing heater is detected by the thermistor (TH1/TH2) provided on the fixing heater. If the surface temperature rises, the resistance of the
thermistor lowers and the voltage of the fixing heater temperature detection signal (M_TH/S_TH) also lowers.
[1]
Fixing film speed sensor
[4]
Thermo-switch (TP1)
[2]
Sub thermistor (TH2)
[5]
Pressure roller
[3]
Main thermistor (TH1)
[6]
Fixing film unit
[1]
[2]
[3]
[4]
[5]
[6]
DC Controller PCB
[1] FILM_SENS
[2]
J217
Summary of Contents for iR2030
Page 1: ...Aug 8 2007 Service Manual iR2030 2025 2022 2018 Series ...
Page 2: ......
Page 6: ......
Page 20: ...Contents ...
Page 21: ...Chapter 1 Introduction ...
Page 22: ......
Page 57: ...Chapter 1 1 33 ...
Page 60: ......
Page 61: ...T 1 11 ...
Page 64: ......
Page 65: ...T 1 12 ...
Page 68: ......
Page 69: ...Chapter 2 Installation ...
Page 70: ......
Page 72: ......
Page 125: ...Chapter 2 2 53 ...
Page 126: ......
Page 127: ...Chapter 3 Main Controller ...
Page 128: ......
Page 130: ......
Page 142: ......
Page 143: ...Chapter 4 Original Exposure System ...
Page 144: ......
Page 170: ......
Page 171: ...Chapter 5 Laser Exposure ...
Page 172: ......
Page 174: ......
Page 181: ...Chapter 6 Image Formation ...
Page 182: ......
Page 184: ......
Page 196: ......
Page 197: ...Chapter 7 Pickup Feeding System ...
Page 198: ......
Page 217: ...Chapter 8 Fixing System ...
Page 218: ......
Page 220: ......
Page 234: ......
Page 235: ...Chapter 9 External and Controls ...
Page 236: ......
Page 255: ...Chapter 10 RDS ...
Page 256: ......
Page 258: ......
Page 268: ......
Page 269: ...Chapter 11 Maintenance and Inspection ...
Page 270: ......
Page 272: ......
Page 275: ...Chapter 12 Standards and Adjustments ...
Page 276: ......
Page 278: ......
Page 281: ...Chapter 12 12 3 ...
Page 282: ......
Page 283: ...Chapter 13 Correcting Faulty Images ...
Page 284: ......
Page 286: ......
Page 299: ...F 13 11 F 13 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ...
Page 300: ......
Page 301: ...Chapter 14 Self Diagnosis ...
Page 302: ......
Page 304: ......
Page 317: ...Chapter 15 Service Mode ...
Page 318: ......
Page 381: ...Chapter 16 Upgrading ...
Page 382: ......
Page 384: ......
Page 411: ...Chapter 17 Service Tools ...
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Page 414: ......
Page 417: ...Aug 8 2007 ...
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