Nikon LS-3500 - LS-3510 - Manual (Page 81)

Glossary 8-9
Software Reference for Scanners
parallel interface an interface where bits are transmitted side by side
on multiple conductors. Transmission speed is much
greater than that of serial interfaces but transmission
line lengths are extremely limited without
considerable amplification. Compare to parallel
interface.
photoelectric conversion the process of converting photons (particles of light
energy) into an electrical signal representation.
photometry the process of reading densities through
photoelectric conversion. Also related to
sensitometry or densitometry which can be
performed using visual matching as well.
pixel the smallest discrete element in a picture, usually
square in a digital system. Short for picture element.
These elements can also be irregular shapes and
randomly spaced like silver halide grains in a
photographic emulsion. Also called pel.
PostScript® a page description language authored by Adobe
Systems. It is used extensively in the desktop
publishing industry to translate digitally stored
images, raster and object types, to a raster-oriented
printing device, such as a laser printer or laser
typesetter.
proofs when it is necessary to approve the image quality
before a quantity press run, proofs are made. In
order of expense, the cheapest are Transfer Key® or
3M Color Key® types. These are four colored
(YMCK) layers of acetate that have been exposed to
the BW film separations and then processed. They