Canon iR C2880 series, Руководство по обслуживанию

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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]