Glossary
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Brightness
Refers to the brightness of a scanned image.
C
CCD (Charge-Coupled Device) image sensor
A sensor which perceives the light reflected from the document and converts it into digital form. CCD technology is the basis
of high quality image acquisition in scanners, cameras and other devices.
D
Default setting
(Hardware)
Preset values from the factory.
(Software)
Values set upon installation of software.
Density
Refers to the deepness of a color in an image.
Device errors
Errors that require troubleshooting by a service engineer.
Dither
The process by which a group of dots is arranged to reproduce the density of grayscale. Grayscale density is reproduced by
configuring preset dot patterns. This method requires less memory compared to multilevel gray.
Document sensor
A sensor that detects changes in the amount of light transmitted through a document. Paper feeding errors such as
multifeeds and paper jams are detected by monitoring the passing of documents.
dpi (dots per inch)
A measurement of resolution that is used for scanners and printers. A higher dpi indicates a higher resolution.
