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Tack
In printing inks the property of cohesion between particles; the seperation force of ink needed for proper transfer and trapping on multicolor presses. A tackingy ink has high seperation forces and can cause surface picking or splitting of weak papers.

TCP/IP
Transmission Control Protocol/Internet Protocol. Set of protocols that standardizes the transmission of data over the Internet.

Terabyte(TB)
One trillion bytes

Text
the body matter of a page or book as distingushed from the headings.

Thermal Dye Sublimation
Like thermal printers except pigments are vaporized and float to desierd to proofing stock. Similar to Thermal Dye Diffusion Transfer.

Thermal Transfer Printers
These printers use a transfer sheet that carries ink in contact with the paper or transparency and a heated printhead driven by digital data that touches the transfer sheet to transfer images to the right points of on the page.

Thermo-Mechanical Pulp
Made by steaming wood chips prior to and during refining, producing a higher yield and stronger pulp than regular groundwood.

Thixotropy
False body in inks.

TIFF
Tagged Image File Format. A de facto standard format for raster images. Tiff supports binary, grayscale, RGB and CMYK images.

TIFF Tagged Image File Format
A flie format for graphics suited for representing scanned images and other large bitmaps. TIFF is a neutral format designed for compability with all applications. Tiff was created specifically for storing grayscale images and it is the standard format for scanned images such as photographs - now called TIFF/IT

Tile
Printing a big picture on a small printer in multiple panels that can then be assembled offline.

Tints
Various even tone areas of a solid color.

Tissue Overlay
A thin, translucent paper placed over artwork(mostly mechnicals) for protection; used to indicate color breaks and corrections.

Tolerances
The specifications of acceptable variations in register, density, dot size, plate or paper thinkness, concentration of chemicals and other printing parameters.

Tone Reproduction
The tonal reproduction between all the elements of a reproduction.

Toner
In digital printing imaging material also call digital inks, used in plateless printing systems like electrophotography, magnetography, ion or electron deposition and laser printers. In Ink dye used to tone printing inks, especially black.

Tooth
A characterisitic of paper, a slightly rough finish, which permits it to talke ink readily.

Transparency
Color positive file

Transparent Copy
Illustrative copy such as a color transparency or postive film through which light must pass in order for it to be seen or reproduced.

Transparent Ink
A printing ink which does not conceal the color beneath. Process inks are transparent so that they will blend to form other colors.

Transpose
Th exchange the posostion of a letter, word or line with another letter, word or line.

Trapping
Slight intentional overlapping of the edges of contiguous print elements to compensate for minor variations in color registration.

Trim Marks
Marks placed on the copy to indicate the edge of the page.

TrueType
Font standard. The alternative is PostScript. Font manufacturers produce both Truetype and PostScript fonts for Macintosh and PC platforms for a total of four different formats.

Twin-Wire Machine
A fourfrinier paper machine with two wires instead of one producing paper with less two sideness.

Two-Sheet Detector
A device for stopping or tripping the press when more than one sheet atempts to feed into the grippers.

Two-Sideness
In Paper the property denoting the difference in appearance and printability between its top (felt) and bottom (wire) sides.

Type Gauge
A printers tool calibrated in pica and points used for type measurement.

Type Style
Grouping of alphabet designs; the six main type styles are roman, sans serif, square serif, text, script and occasional.