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6.9.8 Searchable PDF
When the file format is PDF, the scanned data can be converted to a searchable PDF by
automatically recognizing character strings contained in the document.
1. On the [Scan Settings] window, select the [Save] tab.
2. Press the [Text Recognition] button.
D The [Text Recognition] window appears.
3. For [Searchable PDF], select [Yes].
z Conversion to searchable PDF may take extra time.
z In the following documents, highlighted character strings cannot be set as a
keyword. The scanner may fail to correctly recognize the following kinds of
documents (characters) as text. However, by changing the color mode and/or
improving the image quality for scanning, such documents may be successfully
recognized.
z Handwritten documents
z Documents including smaller characters and scanned in low quality
z Skewed documents
z Documents including texts written in italic characters
z Superscript/subscript letters and complex mathematical formulas
z Characters are written against an unevenly-colored or patterned background
Example: Shaded characters
z Documents containing a lot of characters to which effects are applied
Example: Characters to which effects such as Shadow and Outline are applied
z The recognition time may be long for documents of complex layout as well as
documents including unreadable characters (due to print-through, smudges, or
skewed sheets) and containing text of uneven thickness or small black spots.