R4c448 rev. c – Epson 1200 series User Manual

Page 176

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4

Glossary

L

R4C448
Rev. C

A5 size

GLOSS.FM

2/11/00

Pass 3

Proof Sign-off:
tanto name

SEI Y.Takasaki M.Fujimori

leader name M.Fujimori
editor name

SEI M.Kauppi

primary colors

Basic colors. See additive primary colors and subtractive primary colors.

resolution

Indication of how finely an image is resolved into pixels. 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
so on.

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.

sRGB

A standard color space used as the default color space within the Windows 98
color management system (ICM 2.0).

subtractive primary colors

The colors of cyan, magenta, and yellow (CMY) - which produce black when
mixed in certain amounts. In printing, black is often added to give more definition
as mixing of actual inks cannot produce pure black.

terminator

A device that stops electronic signals, and prevents them from proceeding or
returning to other devices. This is necessary to stop a signal from continuously
bouncing between devices.

threshold

A reference point that is used to determine whether data will be processed as
“on” or “off”. In the case of color image data, “on” means that a certain color will
appear in a pixel or dot, and “off” means that color will not appear there.

tone correction

A method of adjusting the tone curve so that the reproduction results on different
types of output devices have gradations similar to the original image.

tone curve

The graph that shows the contrast ratio between the input (original image) and
output (image data) in image processing.

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