COPYRIGHT © 2006 CANON ELECTRONICS INC. CANON DR-1210C FIRST EDITION FEB. 2006
5-19
CHAPTER 5 TROUBLESHOOTING
7. Outer Areas of Image Disappear
When scanning a document with characters, photographs, illustrations, etc. reaching the
edges of it, selecting the “Auto-detection”, the “Deskew” or the “Border Removal” may cause
the outer areas to disappear from the scanned image. Because these image processing
functions detect the edges of the image as white data in principle, they cannot correctly detect
the edges as that are colored. If colored light, however, the characters, etc. may be correctly
detected even in the edges.
Cause/Faulty
location
Step Check
item Result Action
1
Does any of the document
edges have black-colored
object(s)?
YES Set off such functions
as the “Auto- detection”.
Document
2
Does any of the document
edges have object(s) that is
brighter than black?
YES
Scan the document
using the “24-bit Color”.
This may result in a
correctly scanned im-
age.
Table 5-407
