Epson ES-1200C - Manual (Page 91)

An interface channel through which data is transmitted
between devices.
primary colors
Basic colors. See additive primaries and subtractive primaries.
resolution
Indication of how finely an image is resolved into pixels.
Measured in dots per inch (dpi), or 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.
subtractive primary colors
Primary colors that produce black when mixed in certain
proportion. These are cyan magenta, and yellow. In printing,
black is often added to give more definition because mixing of
actual inks cannot produce pure black.
A value that is referenced to determine whether a certain value
is larger or smaller. The scanner uses a number of thresholds to
convert an image into digital data.
Glossary GL-5