Canon DR-2580C Service Manual page 214

• Scanning documents that are written in pencil or similar material can make
the rollers dirty, which can then transfer the dirt to subsequent documents.
Always clean the rollers after scanning a document written in pencil.
• When scanning a two-sided document that is printed on thin paper, the
image on the opposite side of each page may show through. Adjust the
scanning intensity in the application software before scanning the
document.
• Scanning the following types of documents can cause a paper jam or
malfunction. To scan such a document, make a photocopy of the document
and then scan the photocopy.
Wrinkled or
creased
documents
Curled
documents
Torn
documents
• Note that glossy originals or card originals sometimes cannot be scanned
correctly, or functions such as Paper Size Detection and Deskew do not
function properly due to reflected light.
• When scanning business cards, make sure to select the nonseparation feed
and straight path.
CAUTION
The results of scanning embossed cards are not guaranteed. Note
that scanning embossed cards may scratch the sensor glass.
Embossed Card
44
Using the Scanner
Documents
with paper
clips or
staples
Carbon
paper
Coated
paper
Extremely
thin,
translucent
paper