Canon imageFORMULA ScanFront 400 Set Up And Operation Manual page 102

Documents are double fed
A stack of documents are fed
together
Scanning starts immediately
after I press a job button (certain
users only)
102
Chapter 6 Troubleshooting
Static electricity is causing the pages of the document to stick to each
Cause
other.
Solution
Before you load a stack of documents, fan the documents.
Cause The type of paper of the documents is causing a paper feed error.
Set [Document type] to [Extra-thin paper] in the Detailed Settings
screen. In addition, limit the number of documents placed on the
Solution
scanner to about 10 sheets. (See p. 49.) In addition, set [Non Separation
Feeding Mode] to [OFF] and scan the pages one by one.
Cause The retard roller and feed roller are dirty.
Clean the retard roller anf feed roller. (Refer to "Remove the retard
Solution roller and feed roller, and remove any dirt from them." on p. 176 of the
ScanFront 400 INSTRUCTIONS.)
Cause [Non Separation Feeding Mode] is set to [ON]. (See p. 39.)
Solution Set [Non Separation Feeding Mode] to [OFF].
[Skip Scan Setting Screen] is selected in the job button settings. (See
Cause
p. 90.)
Change the job button setting or place the document and then press a
Solution
job button.