Destination

A set of resolution and calibration settings that match the characteristics of the scan to the final output device. EPSON TWAIN provides several predefined Destination settings that allow you to adjust your scanned image to suit the output device you intend to use. You can also define your own Destination settings.

Device

A piece of computer equipment that performs a specific task, such as a disk drive, a monitor, a printer, or a scanner. Also called a peripheral.

Device Driver

A file containing instructions that allow your computer to recognize and control a device (such as a monitor, printer, or scanner).

DIB

Device-Independent Bitmap. A graphics file format for Windows version 3.0 or later. Four-bit/pixel images can be exported with RLE4 compression and 8-bit/pixel images can be exported with RLE8 compression.

Dithering

A process in which software or an output device simulates continuous tones with repeating patterns of dots.

DPI

Dots per inch. A unit of measurement for resolution. The higher the value, the higher (finer) the resolution.

Draft & fast

An EPSON TWAIN setting that provides faster scanning at a lower resolution.

Dropout

An EPSON TWAIN option that lets you instruct your scanner to ignore a color.

Term Glossary 3