How to make scanned ancient books with black characters on white background?

The background color of the document is red. Is this a document printed on red paper? It is suggested to scan with newspaper (gray scale) or document (OCR) when scanning, so that the scanned text is directly black, and it is ideal if the background color can be automatically converted. If you can't convert the background color, you can only rearrange the document into a Word document after OCR, and print it with black characters on a white background. It is impossible to print pictures directly, and the scanner does not have such decoloring ability.