Question

what does an image scanner do ?
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Answer 1

Explanation:

An image scanner—often abbreviated to just scanner, is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image. Commonly used in offices are variations of the desktop flatbed scanner where the document is placed on a glass window for scanning.

Answer 2

Answer:

an image scanner scans the photos and make it in white colour[like Adobe scan]

or if you mean as a machine a image scanner scans our images which are required and takes a photo copy of it and gives us an real image