Epson Expression 1680 - Manual (Page 141)

Glossary 3
interface
A piece of hardware, a method, or a standard used for connection between or
among computer devices.
moiré
A moiré is a cross-hatch pattern that appears on scanned images when scanning
printed material. It is a result of interference that occurs due to the difference
between the pitches of the scanning and the halftone screens.
monochrome
Black and white images, or images represented only by the intensity of
luminosity.
OCR (optical character recognition)
The technology that allows computers to "read" text from physical objects. OCR
requires a graphical representation of text to interpret, which usually comes from
a scanned image.
pixel
Short for picture element. Each image is composed of a number of pixels. Pixels
are also counted in units of dots.
port
An interface channel through which data is transmitted between devices.
primary colors
Basic colors. See additive primary colors and subtractive primary colors.
resolution
Indication of how finely an image is resolved into pixels. Can be measured in
dots per inch (dpi), pixels per inch (ppi), or samples per inch (spi).
scan
An operation performed by the sensor and the carriage. The image is divided
into pixels by scanning.
scanning area
The physical size of the image that can be scanned by the scanner.
SCSI
Small Computer System Interface. This is one method used to connect your
computer to peripherals such as scanners, hard disk drives, CD-ROM drives, and
others.
SCSI ID
The numbers that all devices in a SCSI connection (see daisy chain) use to identify
each other. If the same ID number is used by two devices in the same daisy chain,
the devices cannot operate properly.