Just use one of the many scanners on Play Store. You scan by taking a image using the camera in the tablet. Then the app makes a PDF or JPG (document or photo) which you can send to someone or print or save.
I use two: the HP scan app which is free and TinyScanner Pro which is not free.
If you have a wifi printer then your printer manufacturer probably has a app for scanning.
I didn't see that OCR request in your original post. You probably need a windows machine to do really good OCR. And why do you need OCR? You asked about a scanner and this tablet does a perfect job of scanning and making a exact copy as a PDF File with the proper APP.
I want to add that I also have a portable scanner. It is a IrisScan. A device that you hold in your hand and move across a document to scan. Not good. A slightest movement of the page being scanned causes a blip in the scan. You have to tape single sheets down on a flat surface. What a drag. Not recommended.