Epson Series Perfection 1240U Series, Reference Manual

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Glossary
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imagesetter
A device that uses computer files to produce high-resolution text and graphics
output on film or paper. These are usually found in service bureaus and printing
companies.
impact dot printer
A printer that transfers ink onto the paper by striking an ink ribbon with a number
of small pins.
ink jet printer
A printer that transfers ink onto the paper by spraying the ink through a number
of small nozzles.
interface
A piece of hardware, a method, or a standard used for connection between or
among computer devices.
line sequence
A type of color scanning that separates primary colors line by line. The carriage
makes only one pass.
marquee
A moveable and adjustable frame that marks the area of an image that will be
previewed or scanned.
moir é é é é
A moiré is a cross-hatch pattern that appears on scanned images when scanning
printed material. It is a result of interference that occurs due to the difference
between the pitches of the scanning and the halftone screens.
monochrome
Black and white images, or images represented only by the intensity of
luminosity.
OCR
Optical Character Recognition
The technology that allows computers to "read" text from physical objects. OCR
requires a graphical representation of text to interpret, which usually comes from
a scanned image.
page sequence
The type of color scanning in which the entire image is scanned once for each
separate color.
pixel
Short for picture element. Each image is composed of a number of pixels. Pixels
are also counted in units of dots.
plain bi-level
Bi-level image data without the halftoning process.