Canon PIXMA TR4700 Series Online Manual page 233

While scanning, hold the document cover gently with your hand to keep it closed.
Important
• Keep these points in mind when using the scanner in the upright position.
Do not subject the scanner to vibration during operation. The correct image results may not
be obtained (for example, images may blur).
The item type may not be detected automatically. In that case, specify the item type in IJ
Scan Utility and scan.
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