If placed in the ADF, the following types of original might be damaged or become jammed, or result in gray or black lines appearing on prints:
Originals larger or heavier than recommended
Stapled or clipped originals
Perforated or torn originals
Curled, folded, or creased originals
Pasted originals
Originals with any kind of coating, such as thermal fax paper, art paper, aluminum foil, carbon paper, or conductive paper
Originals with perforated lines
Originals with indexes, tags, or other projecting parts
Sticky originals such as translucent paper
Thin, highly flexible originals
Thick originals such as postcards
Bound originals such as books
Transparent originals such as OHP transparencies or translucent paper
Originals that are wet with toner or white out