I.R.I.S. Readiris Corporate 12 for Mac User Guide - Manual (Page 58)

Chapter 8 – Recognizing documents
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D EFINING THE DOCUMENT CHARACTERISTICS
Next to the document language, other document characteristics such
as the Font type and Character pitch play an important role in the
recognition process.
Font type
Readiris distinguishes between "regular" and dot matrix printed
documents. Dot matrix symbols (of the type 9 pin) are made up of
isolated, separate dots.
Special segmentation and recognition techniques are required to
recognize dot matrix documents and need to be activated.
To select the font type:
 On the Settings menu, point to Font type.
 The font type is set to Automatic by default.
That way, Readiris recognizes "25 pin" or "NLQ" (Near Letter
Quality) dot matrix, or other "normal" printing.
 To recognize only dot matrix printed documents, click Dot
matrix.
Readiris will recognize so-called "draft" or "9 pin" dot matrix printed
documents.
Character pitch
The character pitch is the number of characters per inch in a
typeface. The character pitch can either be fixed, in which case all