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.

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 which detects the changes in the amount of light transmission. Paper feeding errors such as multifeed and paper
jam are detected by monitoring the passing of documents.

Double Letter size

A standard paper size used in the United States and other countries (11 × 17 in.).

dpi (dots per inch)

A measurement of resolution which is used for scanners and printers. Higher dpi indicates better resolution.

Driver

A program specifically designed for operating systems, which enables interaction with a hardware device.

Dropout color

A function which removes a specified color from a scanned image.

Duplex scanning mode

A mode for scanning both sides of the document at once. (



simplex scanning mode)