A few ways to do this.
Easiest way to scan each page as a single doucment is to use a simple image format such as .GIF, .JPEG or .PNG. These file formats by design are only single page. Only smart image formats like .PDF and .TIFF can create multiple page image documents.
If you are looking to scan to PDF or .TIFF but only as single page documents then it is a little trickier. Most newer models have an option for single page scan output under the advanced scanning options. I would check there first. You can also scan them as a big single document and then individually print the pages one at a time by reprinting the page through a PDF writer/converter print object.