Jam and fault recovery
Image file storage locations
This section provides recommendations for application logic associated with scanner jam and fault recovery.
If your scanner is enabled and you are polling when a document jam or other fault occurs, use the following procedure to restart scanning.
IMPORTANT: Before beginning fault recovery, make sure all the headers and images have been transferred from the image buffer to the host system.
When a document jam or other fault occurs, the feeder and the transport will stop and the scanner will be disabled.
1.When all images have been retrieved from the scanner (image buffer empty), display the last image retrieved for operator viewing.
2.Use the image header of the last image retrieved to determine sequential counter.
3.Use the information above +1 to seed the sequential counter before
4.Instruct the operator to sort through the stack of documents being scanned to find the document that produced the last successfully scanned image. They must rescan all of the documents that follow the last successfully scanned document.
5.Enable the scanner.
This section provides general recommendations regarding the impact of image file storage locations on the overall throughput of the scanner.
You can receive up to four image files per document. Decisions about where to write these files when retrieving them from the scanner could impact the overall throughput of the scanner. In order to prevent overwriting data the scanner stops feeding paper when the internal image buffer is almost full. Scanning will not resume until enough images are retrieved by the host to clear sufficient buffer memory. In order to minimize the number of times this condition might occur, it is recommended that image files are written to a local hard drive in order to avoid the potential overhead of transferring files across the network to remote drives during scanning.
