Visioneer XP 450 manual Image Type Resolution Brightness Contrast

Models: XP 450

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Image Type

SCANNING FROM WINDOWS 98, ME, 2000, OR XP 29

Image Type

Resolution

Brightness

Contrast

IMAGE TYPE

From the Image Type drop-down list, select the appropriate image type for the item(s) you’re scanning:

Black and White—scans in black and white. The scanning pixels are all the same size and are either black or white. Use this setting for letters, memos, pen and ink drawings, and other black and white material. This setting produces the smallest file size for scanned items.

Halftone—scans the image so it appears to consist of gray tones. A pop-up menu appears so you can choose one of the halftone options. Notice that the preview image changes as you select each

option so you can see which one is best for scanning. Halftones produce simulated gray tones by using black and white pixels of different sizes and is often used to produce newspaper and

Halftone Example magazine images. Use this setting for lower resolution black and white images. The halftone settings also produce small file sizes.

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Visioneer XP 450 manual Image Type Resolution Brightness Contrast