Ricoh Pro C7100s Operating Instructions Manual page 174

4. Advanced Copying
1. Press [Dup./ Combine/ Series].
2. Press [Mix 1&2 Sid.].
3. Select [1 Sided] or [2 Sided] for the original.
4. Select [1 Sided] or [2 Sided] for the copy.
5. Place the originals, and then press the [Start] key.
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