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Term Glossary 7
Plain Bi-level
Bi-level image data without the halftoning process.
Port
An interface channel through which data is transmitted between
devices.
Resolution
Indication of how finely an image is resolved into pixels.
Measured in dots per inch (dpi), pixels per inch (ppi), or
sometimes samples per inch (spi).
RLE Compression
Run-Length Encoding. A type of data compression.
Saturation
The amount of color in a specific hue. Unsaturated colors tend to
be pale. Saturated colors tend to be rich and vibrant.
Scaling
Reducing or increasing the size of an image.
Scan
An operation performed by the sensor and the carriage of a
scanner. Scanning divides the image into pixels.
Scanning Area
The physical size of the image that can be scanned by the
scanner.
SCSI
Small Computer System Interface. EPSON scanners may use the
Adaptec AHA-1510 SCSI host adapter card or any other ASPI-
compliant adapter card to communicate between the computer
and the scanner.
Shadow
An EPSON TWAIN option that lets you adjust the darkest areas
of an image. The range between highlight and shadow
determines the range and the color differentiation of the image.