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Text is Not Recognized Correctly when Saving as a Searchable PDF

On the Image Format Options window in Epson Scan 2, check that Text Language is set correctly on the Text tab.
Check that the original is placed straight.
Use an original with clear text. Text recognition may decline for the following types of originals.
- Originals that have been copied a number of times
- Originals received by fax (at low resolutions)
- Originals on which the letter spacing or line spacing is too small
- Originals with ruled lines or underlining over the text
- Originals with hand-written text
- Originals with creases or wrinkles
In Document Mode in Epson Scan 2, when Image Type on the Main Settings tab is set to Black & White, adjust Threshold on the Advanced Settings tab. When you increase the Threshold, black becomes stronger.
In Document Mode in Epson Scan 2, select the Advanced Settings tab, and then Image Option > Text Enhancement.