? Can you explain a little more what you mean by "scaner"? Do you mean scanner?
If you do mean scanner, it is a device for making an electronic image of a picture or printed document (usually) which can then be displayed on your computer screen.
There are systems that can "read" printed text and translate it into editable form for further processing on a word processor.
Sorry if I've misunderstood. If I have, please redefine your enquiry.