Oki LD670 User Manual page 186

- Cleaning the Upper cutter
Using a general-purpose utility knife, flathead screwdriver, or similar
tool, remove the adhesive matter adhering to the inner side and edge
of the Upper cutter.
Note: Be very careful not to damage the edge of the Upper cutter when handling
the utility knife or screwdriver. Also take care not to dent or otherwise
damage the platen roller. A dent on the platen roller may result in
incomplete printing or line feed errors.
Using the cleaning sheet or a similar material, wipe off the
adhesive matter adhering to the Upper cutter.
Upper cutter
Upper cutter
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