Glossary, Continued
T (Continued)
TOUCH SCREEN TECHNIQUE— Activating the pixels on a CRT screen
through the touch of an electronic light pen or the fingertip.
TRACING PAPER— A thin, transparent, or translucent paper used for
transferring an image from one surface to another by tracing.
TRACKBALL— See JOYSTICK or MOUSE.
TRAMMEL— A mechanical device used to draw an ellipse.
TRANSFER SHEET— Preprinted characters and symbols on cellophane or
acetate used in preparing cold composition, camera-ready copy.
TRANSLUCENT— The characteristic of allowing light to pass through
without permitting objects to be seen clearly through it.
TRANSPARENCY— Any transparent material intended for projection that
bears an image.
TRANSPARENT— The characteristic of allowing light and objects to be
seen clearly through it.
TRAPS— A slight overlap of the outline of an element to prevent white space
from showing around the edges minimizing the effect of press plate
misalignment.
TRIAD— The use of any three pigments equally spaced on a color wheel.
TRIANGLE— A triangular shaped ruling guide available in various sizes and
angles usually made of clear plastic or metal.
TRIM MARKS— Marks used on printed sheets or other substrate to indicate
where to cut or trim stock both vertically and horizontally.
TRIMETRIC PROJECTION— An axonometric projection of an object
where no two axes make equal angles with the plane of projection requiring
three different foreshortening ratios.
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