When scanning a batch of documents with different sizes and weights, be sure to follow the following guidelines to avoid a skewed image or a paper jam:
1. Align the documents TOP EDGE first in the sequence of paper size from large to small.
2. If two pages are of the same size yet with different weight, arrange these pages in the sequence of paper weight from heavyweight to lightweight.
3. Align the edges of the documents by tapping the bottom of the stack against the table top.
4. Center these pages in the document feeder and make sure that the edges of page of the largest size slightly touch the Paper Guide.