| Tack |
Applied
to ink it means the adhesive force of wet ink. In screen printing
the tension in or movement of the mesh relative to the ink film
overcomes the tack. Stickiness. |
| Tear
Strength |
Property
measured by the force required to tear a specimen under specified
test conditions. |
| Tensile
Strength |
A
measurement of the deformation produced in the material by an applied
force. |
| Texturing |
Impressing
a pattern into the surface of a film or paper. |
| Therimage |
High
speed transfer system developed by Avery/Dennison for decorating
bottles and closures. (see thermal image) |
| Thermal
Autochrome |
An
image printing technology developed by Fuji Photo Film that requires
no water or chemicals to process. The colour dyes are in a special
paper and are activated by heat. |
| Thermal
Film |
Heat-sensitive
film that carries an image from a thermal image setter. When this
clear film encounters heat, it turns black and is transformed to
an imaged positive. |
| Thermal
Transfer |
A
printer technology that uses heat to transfer coloured dye, wax
or resin onto paper. |
| Thermal
Wax Printing |
A
medium-resolution colour output device that must first separate
the colour information for continuous tone and spot colour into
three or four primaries, and are printed in multiple passes, one
for each colour. A/k/a thermal wax transfer. |
| Thermal-Transfer
Printer |
A
machine that digitally prints by transferring inks (resin or wax
based) from a foil (or ribbon) onto media such as paper or vinyl. |
| Thermoplastic |
A
soft and mouldable plastic when subjected to heat. Hardens on cooling
and is able to repeat this process. Most plastics that are decorated
are thermoplastics. |
| Thermoset
Plastics |
Highly
resistant plastic that remains a solid during the forming process
and cannot be recycled. This starts as a powder and is formed with
the application of pressure and heat. |
| Thermo-Setting |
Substance
setting permanently when heated. |
| Thermosetting
Ink |
Inks
which polymerise to a permanently solid and fusible state upon application
of heat. |
| Thinner |
Something
that is added to an ink in order to lower its viscosity and increase
its flow. 1) Retarder: a solvent or other liquid that is added to
an ink in order to slow the drying rate. High boiling point. 2)
Fast Thinner: a solvent or other liquid that is added to an ink
in order to increase its drying rate. Low boiling point. |
| Thixotropic |
A
full-bodied material which undergoes a reduction in body when shaken,
stirred or otherwise mechanically disturbed and which readily recovers
the original full-bodied condition on standing. In screen printing
the work applied by the action of the flood coater or squeegee is
sufficient to allow the ink to flow through the mesh. |
| Thumbnail |
A
small, low-resolution version of an image. |
| TIFF |
Tagged
Image File Format. A type of image file format, TIFF files can include
colour or greyscale The quality of the image is determined by its
resolution or dpi. Especially useful for graphics that will be used
in many applications or on more than one computer platform. |
| Tiling |
The
process of breaking down an image or page into sections for editing
or printing purposes. |
| Tint |
Some
percentage of a solid ink. Tints are created by using a screen to
create the impression of a lighter colour when the ink is printed
onto paper or another medium. |
| Tinter |
A
concentrated colour-base which may be added to an ink to alter its
colour. |
| Tonal
Resolution |
The
number of bits per pixel used in the digital representation of an
image. The intensity and colour of each pixel in the image are represented
by an integer value or set of integer values. |
| Tone
Curves |
See
Gamma curves. A representation of the tonal range of an image showing
the progress from black to white. Some image editors allow these
to be adjusted for fine tuning of the image. |
| Toner |
A
coloured powder or liquid used to print onto various materials on
non-impact printers, such as electrostatics, and contains a colorant,
an electrostatic thermoplastic, charge control agent, and often
a magnetic material. |
| Transfer |
See
offset. |
| Transform |
A
colour-space exchange from one system (RGB to CMYK) to another,
or changing from one hue base to another. |
| Translucent |
Diffuse
transmission of light. No clear image can be seen. |
| Transmission
Densitometer |
An
instrument that measures the fraction of light that is transmitted
through film from a measured light source, expressed as the inverse
log of the percent transmission. |
| Transmittance |
The
fraction of the light that passes through an object. |
| Transparency |
A
measure of the amount of light which an ink film allows through;
the reverse of obliteration or opacity. |
| Transparency
Guide |
A
plastic template or form for holding and positioning transparencies
on the scanner copy board glass and for protecting the scanner calibration
area. |
| Transparency,
Museum Quality |
High-quality
reproduction requires copy transparencies made by photographers
experienced in art reproduction. Lighting is very important in terms
of evenness, colour, and lack of any specular highlights. |
| Transparent |
Adjective
to describe a material that transmits light with minimal diffusion
or scattering. |
| Trapping |
An
overlap between abutting colours/elements. Traditionally done by
using chokes and spreads, but graphics software gives users the
ability to do trapping for type and objects. |
| Trapping
of Inks |
The
property of a printing ink that makes it possible to superimpose
one colour on another. |
| Trichromatic
Printing |
A
process in which a full colour reproduction is obtained with a small
number of inks (usually three or four), generally by the halftone
process. |
| Tristimulus |
1)
Of, or consisting of, three stimuli; generally used to describe
components of additive mixture required to evoke a particular colour
sensation. 2) Colourimeter: An instrument that measures tristimulus
values and converts them to chromaticity components of colour. |
| Tristimulus
Values, CIE |
Amounts
(in percent) of the three components necessary in a three-colour
additive mixture required for matching a colour; in the CIE system,
they are designated as X, Y, and Z. |
| Trumatch® |
A
colour-matching system similar to Pantone. |
| Tungsten |
1)
The metal that lamp filaments are made of. 2) Sometimes refers to
the colour temperature in degrees Kelvin that simulates a common
photo lamp (3200K). |
| Turret |
Where
the application of the image occurs during a thermal image transfer. |
| Two-Pack |
An
ink, the materials for which are supplied in two parts which must
be mixed in correct proportions before use. The mixture will then
remain in a usable condition for a limited length of time. One of
the parts is a catalyst. |
| Two-Way
Markings |
A
marking with clear adhesive that can be viewed on the first surface
or through the adhesive. |
| TXT |
Text-only
format. This format is useful for text if you do not need to retain
the formatting. |
| Typeface |
The
style and design of a particular alphabet. |
