Chapter 8
8-24
d. Finishing monitoring the arch
Finish monitoring the arch at the point where the tailing edge of paper passes through the secondary transfer roller.
8.9 Duplex Feeding Unit
8.9.1 Overview
0014-0327
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
At both-sided print in this machine, a paper is reversed at the reversal slot of the delivery assembly outside the machine, returned and re-picked up through the
duplexing feed assembly to the registration roller assembly.
In reversing, keep the trailing edge of paper at 30mm upstream from the reversing roller [1], and stop temporarily with the remained portion delivered outside the
machine from the reversal slot. After that, rotate the reversing roller reversely and return the paper, feed it through the duplexing inlet roller [4] to the duplexing
feed assembly. The delivery motor 3 activates the reversing roller and the duplexing inlet roller.
The duplexing feed assembly has two sets of duplexing feed roller [5] [7]. These rollers feed papers to the registration roller assembly. Duplexing motor activates
the duplexing feed roller.
F-8-29
[1] Reversing roller
[2] Reversal sensor (PS4A)
[3] Duplexing inlet sensor (PS3A)
[4] Duplexing inlet roller
[5] Duplexing feeding roller 1
[6] Duplexing feed sensor (PS10)
[7] Duplexing feeding roller 2
There are following restrictions regarding duplexing feeding for this machine.
- Duplexing feeding is possible only for plain paper. Heavy paper (105 g or more) is out of specification (since reversing feeding is not assured).
- Sizes available for duplexing feeding are B5 (vertical scanning; 182 mm) to 12X18 (vertical scanning; 457 mm)
- Output of papers of 450mm or more SRA3 and 12X18 to the delivery 3 is out of specification (since it is impossible to stack them on the tray of the delivery 3).
8.9.2 The Number of Circulating Sheets at Duplexing Feeding
0014-3134
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The number of sheets circulating in the passing at duplexing feeding varies due to the delivery position and the paper size.
When outputting to the delivery 1 and 2, the number of circulating papers of small size (smaller than A3) and large size (A3 or more) is 3.
When outputting to the delivery 3, the number of circulating is 3 for small size (smaller than A3) and 1 for large size (A3 or larger).
This is because the reversing roller and the delivery roller 3 has the same drive source (the delivery motor 3) and two sheets of A3 or larger size cannot be delivered
simultaneously in the reversing and re-pickup directions.
The following are the number of circulating papers at duplexing feeding according to the delivery position and the paper size.
T-8-12
Arch sensor OFF
(Decreasing the fixing feeding speed)
135.0 mm/s
67.5 mm/s
33.8 mm/s
Delivery 1 / 2
Delivery 3
Small size (smaller than A3)
3
3
Constant speed
Half speed
1 / 4 speed
[6]
[3]
[2]
[1]
[4]
[5]
[7]
Summary of Contents for iR C3380 series
Page 1: ...Aug 29 2006 Service Manual iR C3380 2880 Series...
Page 2: ......
Page 6: ......
Page 23: ...Chapter 1 Introduction...
Page 24: ......
Page 26: ......
Page 52: ......
Page 53: ...Chapter 2 Installation...
Page 54: ......
Page 127: ...Chapter 3 Basic Operation...
Page 128: ......
Page 130: ......
Page 136: ......
Page 137: ...Chapter 4 Main Controller...
Page 138: ......
Page 160: ......
Page 161: ...Chapter 5 Original Exposure System...
Page 162: ......
Page 188: ...Chapter 5 5 24 F 5 68 4 Remove the original sensor 2 hook 1 F 5 69...
Page 189: ...Chapter 6 Laser Exposure...
Page 190: ......
Page 192: ......
Page 206: ......
Page 207: ...Chapter 7 Image Formation...
Page 208: ......
Page 256: ......
Page 257: ...Chapter 8 Pickup Feeding System...
Page 258: ......
Page 262: ......
Page 303: ...Chapter 9 Fixing System...
Page 304: ......
Page 306: ......
Page 321: ...Chapter 10 Externals and Controls...
Page 322: ......
Page 326: ......
Page 336: ...Chapter 10 10 10 F 10 10 2 Remove the check mark from SNMP Status Enabled...
Page 337: ...Chapter 10 10 11 F 10 11...
Page 359: ...Chapter 11 MEAP...
Page 360: ......
Page 362: ......
Page 401: ...Chapter 12 RDS...
Page 402: ......
Page 404: ......
Page 411: ...Chapter 13 Maintenance and Inspection...
Page 412: ......
Page 414: ......
Page 416: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4...
Page 421: ...Chapter 14 Standards and Adjustments...
Page 422: ......
Page 424: ......
Page 431: ...Chapter 15 Correcting Faulty Images...
Page 432: ......
Page 434: ......
Page 459: ...Chapter 16 Self Diagnosis...
Page 460: ......
Page 462: ......
Page 481: ...Chapter 17 Service Mode...
Page 482: ......
Page 484: ......
Page 571: ...Chapter 18 Upgrading...
Page 572: ......
Page 574: ......
Page 603: ...Chapter 19 Service Tools...
Page 604: ......
Page 606: ......
Page 609: ...Aug 29 2006...
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