Treat the documents carefully. The paper edges may cut your fingers.

The CR-190i can feed a wide variety of document sizes. The ranges of height and length for a document are:
Height: 2.7" to 4.3" (68 to 108 mm)
Length: 4.7" to 9.6" (120 to 245 mm)
Thickness: 0.003" to 0.008" (0.08 to 0.20 mm)
Weight: 17 to 40 lb bond (64 to 157 g/m²)

Follow these guidelines when you prepare a document for scanning:
Before scanning documents that contain pasted artwork, make sure that the ink or paste is thoroughly dry. If the documents are scanned with wet ink or paste, the inside of the scanner may become dirty and it may cause a malfunction.
If you scan a document written in pencil, the letters may not be scanned properly or the pencil may rub off onto the rollers and stain subsequent documents. Before you scan this kind of document, make a copy, and then scan the copy. After scanning a document written in pencil or some other soft writing material, be sure to clean the scanning rollers.
If you scan thin paper in the Duplex mode, the ink printed on the back side may be scanned. If this happens, adjust the scanning density.
To avoid paper jams, damage to documents, and a scanner malfunction, do not feed the following types of paper into the scanner. If you want to scan these types of paper, first make a copy, and then scan the copy.



Note that mixing documents of different thickness may cause a malfunction during feeding.
Curled, wrinkled, or folded documents may cause an error. If this happens, straighten out the curls, or reduce the number of documents loaded.

Envelope
You can also scan the envelope. When using separation OFF mode, you can scan an envelope with thickness up to 0.02" (0.5 mm) or weight up to 111 lb bond (413 g/m² ).


Disable the double feed detection function.
If the envelope is not the first document in the batch, it may cause a feeding error or a paper jam.
Some type of envelopes may cause a feeding error or a paper jam.