Canon NP6551 Operator's Manual page 86

Press the [OK] key.
4
Settings are completed and the [ZOOM] key is
highlighted.
Proceed to copy in the usual manner.
(See "Making Copies," on p. 2-4.)
MEMO: ●
To return to direct copying (100%), press the
[DIRECT] key.
●
You can also return to direct copying by pressing the
Reset
key. (The copier returns to the Standard mode.)
2-47