Contex IQ 2400 Series, Technical Service Manual

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Service Guide IQ / IQ Quattro
104
TWAIN
A standard method of communications that programs can use to send instructions to hardware (such as scanners) and receive data back from them (such as
pictures).
UCR
Under Color Removal. A color separation setting used on color photographs where cyan, magenta and yellow inks are removed from dark, neutral areas and
substituted by black ink. The advantages are a reduction in overall ink usage. See also
GCR.
Vector Drawing
Also called Vector File. Consists of mathematically defined elements, such as “Line from A to B”, “Circle with center and radius”, etc. CAD systems use vector draw-
ings because of their accuracy, relatively low memory requirement and data-file sizes compared to raster images.
Vector File
Also called Vector Drawing. Consists of mathematically defined elements such as: Line from A to B, Circle with center and radius etc. CAD systems use vector
drawings because of their accuracy and relatively low memory and data file sizes compared to raster images.
Vectorization
Also called raster-to-vector conversion (RTV). The process of automatically converting a raster (bit-mapped) image into a vector (CAD) drawing.
White Level
White Level is a setting in scan programs used if one has an original with a background that is not completely white. To get the background to appear as pure white
one can set the White Level to a lower value.
White Point Adjustment
An adjustment made that will determine the amount of highlight detail in an image. The white point should be set so that the lightest part of an image will only just
have zero detail
XYZ
The CIE system is based on the description of color as a brightness (luminance) component Y (as described above), and two additional components X and Z. The
spectral weighting curves of X and Z have been standardized by the CIE, based on statistics from experiments involving human observers. XYZ tri-stimulus values
can describe any color.
Zoom
The ability to enlarge or shrink the view of the picture in a window. Zoom does not alter the size of the final scanned picture; it only provides a better view while
creating a selection border on the screen.