Sindoh M611 - Manual (Page 66)

Preparation for Using the Machine
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17. Paper
Automatic Feeding
When the current printing encounters out of paper from one tray, the machine switches automatically to other
tray with identical paper size and type loaded in, and continues printing.
Feeding Order
When automatic feeding is set, the trays are switched in the following order:
Tray 1 → Tray 2 (Option) → MPT