Manual sheet jam clearance in printer

A manual operation method of a printer including a printing head, a feeding roller configured to feed a single slip conveyed through a first conveyance path to the printing head and a continuous sheet conveyed through a second conveyance path to the printing head, a sheet conveyer at the second conveyance path and configured to convey the continuous sheet to the feeding roller, and a handle mechanically engaged with a shaft of the feeding roller, the operation method comprising:

• when the single slip is jammed, rotating the handle at a first position along an axis direction of the shaft to rotate the feeding roller, the handle being mechanically disengaged with a driving mechanism of the sheet conveyer at the first position;
• when the continuous sheet is jammed,
• moving the handle from the first position to the second position along the axis direction of the shaft against an urging force of an urging mechanism urging the handle toward the first position, such that the handle is held at the second position by a stopper against the urging force, the handle being mechanically engaged with the driving mechanism of the sheet conveyer at the second position;
• and
• rotating the handle at the second position to move the sheet conveyer and rotate the feeding roller.