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Chapter 10
10-5
10.2.2 Document Size Detection
0013-1194
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
This machine detects the original size while feeding the original. (Same-type mixed printing and banner paper printing are included.)
The document feeder tray does not have a sensor for detecting the paper size.
T-10-3
10.2.3 Paper Pickup Operation
0013-1195
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
The pickup unit consists of pickup and transport rollers. When the Start Key signal or Original Feed signal is input, the ADF motor (M2001) turns in the normal
direction and then the pickup solenoid (SL2001) turns on. The pickup unit lowers and the pickup and transport rollers rotate to feed the paper. The shutter moves
up in conjunction with the pickup unit. A separation pad is used to prevent multiple sheets from being fed at the same time.
When the original reaches the registration roller where is it looped, the pickup solenoid (SL2001) turns off and the pickup unit roller rises. Next the registration
solenoid (SL2002) turns on and the original is fed by the registration roller. At this time, the pickup roller drive shaft which is rotated via the spring one-way clutch
is stationary at the highest position in the pickup unit. The pickup roller incorporating a one-way clutch is rotated by the friction against the paper.
F-10-6
10.2.4 Reversal Operation
0013-1196
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
There are two types of reversal operations, reversal from the top side to the reverse side and reversal from the reverse side to the top side. However, since their
operating principles are the same, only reversal from the top side to the reverse side is described below.
a. When the ADF motor (M2001) turns and the registration solenoid (SL2002) turns on, the registration roller turns to feed the paper along the platen guide for
surface scanning. After completion of scanning, the paper is fed to the delivery unit by the transport roller 1 and delivery roller.
Function
Description
Sensor used (symbol)
Document length detection Detects the document length according to the
distance from the position where the document edge
sensor (SR2002) turns on to the position where the
document edge sensor (SR2002) turns off.
Document edge sensor (SR2002)
ADF motor (M2001)
Pickup solenoid (SL2001)
Shutter
Pickup roller
Ppaer
Feed roller
Separation pad
Shutter
Summary of Contents for iR1020 Series
Page 1: ...Sep 1 2008 Service Manual iR1020 1021 1024 1025 Series ...
Page 2: ......
Page 6: ......
Page 17: ...Chapter 1 Introduction ...
Page 18: ......
Page 20: ......
Page 49: ...Chapter 1 1 29 ...
Page 50: ......
Page 51: ...Chapter 2 Installation ...
Page 52: ......
Page 54: ......
Page 61: ...Chapter 2 2 7 ...
Page 62: ......
Page 63: ...Chapter 3 Basic Operation ...
Page 64: ......
Page 66: ......
Page 73: ...Chapter 3 3 7 ...
Page 74: ......
Page 75: ...Chapter 4 Original Exposure System ...
Page 76: ......
Page 78: ......
Page 87: ...Chapter 5 Laser Exposure ...
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Page 94: ......
Page 95: ...Chapter 6 Image Formation ...
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Page 103: ...Chapter 7 Pickup Feeding System ...
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Page 120: ......
Page 121: ...Chapter 8 Fixing System ...
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Page 124: ......
Page 135: ...Chapter 9 External and Controls ...
Page 136: ......
Page 138: ......
Page 151: ...Chapter 10 Original Feeding System ...
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Page 154: ......
Page 156: ...Chapter 10 10 2 M2001 ADF motor Symbol Name ...
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Page 171: ...Chapter 11 e maintenance imageWARE Remote ...
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Page 185: ...Chapter 12 Maintenance and Inspection ...
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Page 191: ...Chapter 13 Standards and Adjustments ...
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Page 201: ...Chapter 14 Correcting Faulty Images ...
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Page 215: ...Chapter 15 Self Diagnosis ...
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Page 225: ...Chapter 16 Service Mode ...
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Page 232: ...Chapter 16 16 2 Makes various status checks such as contact sensor sensor and print status ...
Page 278: ......
Page 279: ...Chapter 17 Upgrading ...
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Page 282: ......
Page 297: ...Chapter 18 Service Tools ...
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Page 299: ...Contents Contents 18 1 Service Tools 18 1 18 1 1 Special Tools 18 1 ...
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Page 303: ...Sep 1 2008 ...
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