Ray:
As has been already pointed out, your scanner will make an image of the paper. It will save that image in one of several formats. It may be as a "picture", like a JPG. Or it may be a PDF. Actually, this video : https://www.youtube.com/watch?v=0HToLDccavc shows it saving scans as PDF.
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In that case you have to use Word to "Open" that PDF. When you do that, Word will perform a function called OCR, Optical Character Recognition. That is geek speak for the computer "looking" at the image and trying to match what it sees to what it knows as "letters". It puts those letters into a DOCX file. It is only a computer, it makes mistakes. So you have to read it carefully looking for errors. There are other PDF files with a special PDF format that are generated from text based documents. This format actually stores the text in the file. When the file is "OCR'd", the OCR sees that text and uses it rather than guessing. Obviously that format explicitly does not apply to files you have scanned using your printer/scanner.
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Here are a couple of articles on "editing" PDF files in Word
https://www.officetooltips.com/word_365/tips/open_and_edit_pdf_files_in_word.html
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https://support.microsoft.com/en-us/office/opening-pdfs-in-word-1d1d2acc-afa0-46ef-891d-b76bcd83d9c8
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Actually, I just remembered that there are also some programs (free and paid) that will allow you to "edit" PDF files directly. While you won't be able to edit the text, you will be able to add text "boxes", images and other stuff. So you could "white out" some text and type over it. It is somewhat clumsy, but it can be done. It has the advantage of making it obvious what has been changed.
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Here is another review/unboxing/setup of your printer, in case you are interested
https://www.youtube.com/watch?v=yfRkJ7qh--Y
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