Scanners

·    Capture images from photographic prints, posters, magazine pages, and similar sources for computer editing and display

·       Come in hand-held, feed-in, and flatbed types

·       For scanning black-and-white only, or color.

·       Very high resolution scanners are used for scanning for high-resolution printing

·       Lower resolution scanners are adequate for capturing images for computer display

·       Scanners usually come with software, such as Adobe’s Photoshop product, that lets us resize and otherwise modify a captured image

·       Usually attach to our personal computer with a Small Computer System Interface (SCSI)

·       An application such as Photoshop uses the TWAIN program to read in the image

·       Some major manufacturers of scanners include: Epson, Hewlett-Packard, Microtek, and Relisys

TWAIN

§  Widely-used program that lets we scan an image (using a scanner) directly into the application (such as Photoshop)

§  Without TWAIN, would have to close an application that was open, open a special application to receive the image, and then move the image to the application where you wanted to work it

§  TWAIN driver runs between an application and the scanner hardware

§  TWAIN usually come as part of the software package we get when we buy a scanner

§  It also integrated into Photoshop and similar image manipulation programs


This video is to show how to clean your scanner