There — that explains everything, at least for technotypes. In plain English, a
scanner “reads” the image from an object (typically a piece of paper) and
then creates a copy of that image as a picture file on your computer.

Most of the work you do with scanners these days, however, is performed as
I describe in my definition: For example, you want an image from a magazine
in a form you can use with a document you’ve created with Microsoft Word.