QVC

• A-B
• C-D
• E-F
• G-H
• I-J
• K-L
• M-N
• O-P
• Q-R
• S-T
• U-V
• W-X
• Y-Z

A-B

ADF

Automatic Document Feeder. An accessory that automatically feeds a stack of paper into a scanner.

BIT Depth

The number of colours a scanner can capture.

C-D

CCD

Charge-Coupled Device. An image sensor used in scanners.

Decompress

To return a compressed image file to its original size or condition for display or editing.

Digitise

To convert an analogue image into a digital one.

DPI

Dots Per Inch. A measurement of print and image resolution e.g. 600x1200 dpi - more dpi means a higher resolution and finer detail.

Duplex

A scanner that will image the front and back of a page in a single pass.

E-F

Flatbed

A scanner in which the document is placed face-down on a glass bed as the imaging assembly moves.

G-H

Host

The primary PC to which a scanner is connected.

I-J

ICR

Intelligent Character Recognition. A feature that allows a scanner to recognise hand-printed characters.

Image Enhancement

A technique for processing an image so that the resulting image is clearer than the original.

Inkjet Printing

The most common for of printing technology capable of producing amazingly detailed images

Interpolated

A method of creating a larger image file size using software. While the file size is greater, the image contains no more detail than the maximum resolution of the CCD.

K-L

M-N

Memory Card

Versions include CompactFlash™, Memory Stick, Secure Digital, MultiMedia Card, XD Picture Card, Memory Stick duo and Mini SD. Allows you to transfer digital photos from your camera to another device, like a printer or a PC, with a card reader.

O-P

OCR

Optical Character Recognition. A feature that allows a scanner to recognise machine-printed characters. This means a document can be scanned and used in Microsoft Word or spreadsheet formats.

Orientation

The direction of a display or page: either horizontal ('landscape') or vertical ('portrait').

Pixel

An abbreviation of 'Picture Element'. This is the tiniest element of an image, a dot, describing its colour.

Pixel Depth

The number of bits per pixel captured by a scanner. Essentially the same as bit depth.

PPM

Pages Per Minute. The standard unit of scanner and printer speed.

Q-R

Resolution

The density of pixels in a scanned image, measured in 'dots per inch' (dpi). The higher the resolution, the finer the detail.

Simplex

A scanner that will read only one side of a page in a single pass.

S-T

TWAIN Interface

Allows you to scan an image directly into an application. Without this you would have to scan an image onto your PC and then copy it over to another application to manipulate the file.

U-V

W-X

Y-Z