Glossary
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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 (such as a scanner and a 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, set the gamma rate 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.
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.
Image processing
Refers to processing and outputting the scanned image via specified scan parameters.
Imprinter
A printer that can print text (such as letters and numbers) on the back or front of scanned documents.
It can be use to manage the documents by adding a name, date or serial number on the scanned document.
Intelligent Multifeed Function
A function that excludes certain patterns of overlapping of documents that is 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.
ISIS
ISIS (Image Scanner Interface Specification) is an API (Application Program Interface) standard for imaging devices (such
as scanners and digital cameras) which was developed by Captiva, a division of EMC Corporation (the former Pixel
Translations) in 1990. In order to use devices that comply with this standard, it is necessary to install a driver software that
supports ISIS standard.
