Oki C 9400 - Manual (Page 42)

Check setting to Off.
8. Click Print.
Labels
Label Recommendations
Important! Use label sheets designed for laser printers.
Caution!
Labels must be able to withstand 392°F (200°C) for 0.1-second.
Labels must cover the entire carrier sheet.
Label adhesive must not be exposed; if it is, it will cause jamming in the printer.
Label Print Path
Input: Multi-Purpose (MP) Tray Only
Output: Straight-Through Exit Only
Label Specifications
Maximum depth of label sheet feed stack: about 3/8-inch (1 cm)
Sheet Size: Letter or A4
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