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Objected-oriented
(mode): The Draw Graphics Mode. A set of algorithms
that describes graphic form in abstract geometrical terms, as
object primitives, the most fundamental shapes from which
all other shapes are made: lines, curves, and solid or patterned
areas.
Oblique: A slanting version of a face. Oblique is similar
to italic, but without the script quality of a true italic.
The upright faces are usually referred to as roman.
Offset: The most commonly used printing
method, whereby the printed material does not receive the
ink directly from the printing plate but from an intermediary
cylinder called a blanket that receives the ink from the
plate and transfers it to the paper.
Offset paper: A term for uncoated book
paper.
Offset printing: For high-volume reproduction --
utilizes three rotating drums: a plate cylinder, a blanket
cylinder, and an impression cylinder. The printing plate
is wrapped around the plate cylinder, inked and dampened.
The plate image is transferred, or offset, onto the blanket
cylinder. Paper passes between the blanket cylinder and
the impression cylinder, and the image is transferred onto
the paper.
Offshore paper: Any papers made outside
the US and Canada.
One-point perspective: An effect created by lengthening
or shortening one side of an object to create the impression
that the object is receding from view in one direction.
Onionskin:
A light bond paper used for typing and used with carbon
paper because of its thinness.
Opacity: Quality of papers that defines
its opaqueness or ability to prevent two sided
printing from showing through.
Opaque:
The inability to see through an object. If an object is
100% opaque, you cannot see through it. Opacity levels under
100% increase the ability to see through objects..
Opaque ink: Ink that completely covers
any ink under itself.
Orphan: In a page layout, the first line of a paragraph
separated from the rest of the paragraph by a column or
page break. Headings without enough type under them may
be considered as orphans; there should be as much type below
the heading as the height of the heading itself, including
white space.
Origin: The point in the drawing window
at which the rulers intersect.
Outline: The line that defines the shape
of an object.
Output resolution: The number of dots per
inch (dpi) that an output device, such as an imagesetter
or laser printer, produces.
Overlay: A transparent sheet placed over
artwork, in register with the work it covers; this is used
to call out other color components of the work, instructions
or corrections.
Overlay proof: A process of proof-making
whereby the color separations are individually exposed to
light sensitive film. This film is then set in registration
with a piece of white paper in the background.
Overexposure: Excessive light in an image
that gives it a washed-out appearance.
Overprinting: Any printing that is done
on an area that has already been printed.
Overrun: Quantities of sheets printed over
the requested number of copies.
Overset: Type that is set in excess of
the allotted space.
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