A-61510 January 2005 2-32
Patch Reading
Patch reading allows you to change image address (IA) information
for a document on the fly, without any host PC or Operator Control
Panel intervention. All documents with patch codes are imaged and
cannot be automatically deleted by the scanner.
Types of Patch Codes
A patch code can change the IA level of the document that the patch
code occurs on (or the following document in the case of a Transfer
patch). These changes then override the IA calculated using the Level
to Follow Level rules.
Type 3 Patch Code
The image header reflects when a Type 3 patch code is detected
on a document. A Type 3 patch code is considered to be a Level
3 document. The IA for that document is recalculated by
incrementing the Level 3 field and setting the Level 2 and Level 1
fields to 0 (if the Level 2 and 1 fields are defined as having a field
width greater than 0). In the image header, document level and
patch type will be returned as a 3.
Type 2 Patch Code
The image header reflects when a Type 2 patch code is detected
on a document. A Type 2 patch code is considered to be a Level
2 document. The IA for that document is recalculated by
incrementing the Level 2 field and setting the Level 1 field to 0 (if
the Level 1 field is defined as having a field width greater than 0).
In the image header for this document, document level and patch
type will be returned as a 2.