Canon PIXMA MG3660 Online Manual page 375

You can set the print quality to "Draft" (speed priority) following the procedure below.
1. Press and hold down Color or Black button for 2 or more seconds in step 5.
The ON lamp flashes once.
2. Release button.
The machine starts copying.
When the print quality is set to "Draft", print speed is given priority over quality. To give priority to
quality, press the Color or Black button for less than 2 seconds to copy in the print quality "Standard".
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