Glossary
G
Gamma
A unit which indicates the changes in the brightness of an image. It is expressed as a function of the electric input power to devices (e.g. scanner, display) and the brightness of the image. If the gamma rate is larger than 1, the brightness of an image increases and vice versa. Normally, the gamma rate is set to 1 when reproducing the same brightness as the original.
Grayscale
A method which expresses the gradation (density) from black to white in 256 levels. Suitable for scanning images such as photographs.
H
Halftone
Reproduces the color density in black & white by using dot patterns. This method is effective for scanning images such as photographs in black & white.
I
Image processing
Refers to processing and outputting the scanned image via specified scan parameters.
iMFF (intelligent Multi Feed Function)
A function that excludes certain patterns of overlapping of documents that are detected as multifeed, by letting the scanner memorize the overlap pattern. For instance, when there is paper of the same size attached to a designated location on the page, the scanner memorizes the location of the attachment and can be configured not to detect multifeeds for that location.
Interface
The connection that allows communication between the computer and the scanner.
Inversion
A scanning method in which the black part and the white part of the image are inverted.
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