Chapter 10
10-3
10.2.1.2 Throughput Down Control
0020-0393
This control is to prevent an overheating at both ends of the fixing sleeve by keeping the required speed for paper feeding and, in addition, extending the pickup
interval.
At continuous printing with the paper width narrower than A4 size (210 mm), the end of fixing sleeve may overheat.
If no paper is detected by the paper displacement sensor (SR714) on the registration roller at paper feed and, in addition, a detected temperature by the fixing sub
thermistor (TH2) exceeds the specified temperature, it is considered that either universal size paper or narrower width paper than A4 size is fed.
In this case, DC controller performs the throughput down control step-by-step according to the detected temperature by the fixing sub thermistor.
When the detected temperature is 250 deg C or higher, the controller extends the pickup interval by keeping the paper feed speed to lower the throughput. The sheet
interval gets longer, the fixing sleeve temperature becomes lower.
Firstly, 1st additional interval is added to the default pickup interval followed by paper feed.
If after 1st additional interval, the sub-thermistor again detects temperature of 250 deg C or higher and there is no change in the paper interval after five sheets, 2nd
additional interval is added. The 3rd and 4th intervals are added similarly.
T-10-1
When the fixing sub thermistor detects the temperature below 90 deg C for 2.5 sec or more after the throughput down control, throughput down control is canceled.
Fixing sub thermistor
temperature
Additional intervals (sec)
1st
2nd
3rd
4th
250 deg C
+2
+6
+10
+14
260 deg C
+6
+10
+14
+18
270 deg C
+10
+14
+18
+22
Summary of Contents for iR C1020 Series
Page 1: ...Sep 8 2008 Service Manual iR C1020 Series iR C1021i ...
Page 2: ......
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Page 18: ...Contents ...
Page 19: ...Chapter 1 Introduction ...
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Page 57: ...Chapter 2 Installation ...
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Page 73: ...Chapter 3 Basic Operation ...
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Page 81: ...Chapter 4 Main Controller ...
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Page 97: ...Chapter 5 Original Exposure System ...
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Page 113: ...Chapter 6 Original Feeding System ...
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Page 133: ...Chapter 7 Laser Exposure ...
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Page 143: ...Chapter 8 Image Formation ...
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Page 181: ...Chapter 9 Pickup and Feed System ...
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Page 213: ...Chapter 9 9 29 F 9 79 1 2 3 ...
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Page 215: ...Chapter 10 Fixing System ...
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Page 233: ...Chapter 11 External and Controls ...
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Page 263: ...Chapter 12 e maintenance imageWARE Remote ...
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Page 275: ...Chapter 12 12 9 F 12 27 ...
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Page 281: ...Chapter 13 Maintenance and Inspection ...
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Page 287: ...Chapter 14 Measurement and Adjustments ...
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Page 293: ...Chapter 15 Correcting Faulty Images ...
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Page 317: ...Chapter 16 Error Code ...
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Page 331: ...Chapter 16 16 11 ...
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Page 333: ...Chapter 17 Special Management Mode ...
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Page 343: ...Chapter 17 17 7 ...
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Page 345: ...Chapter 18 Service Mode ...
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Page 389: ...Chapter 19 Upgrading ...
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Page 396: ...Chapter 19 19 4 3 Click Next F 19 4 4 Select a USB connected device and click Next F 19 5 ...
Page 397: ...Chapter 19 19 5 5 Click Start F 19 6 6 Click Yes F 19 7 Download will be started F 19 8 ...
Page 399: ...Chapter 19 19 7 ...
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Page 401: ...Chapter 20 Service Tools ...
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Page 407: ...Sep 8 2008 ...
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