Glossary Of Terms
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The SGIA Glossary of Terms serves as an excellent industry terminology resource. It is the language by which we all communicate, without it universal understanding would be impossible. Language and our ideas about how it is interpreted change rapidly. SGIA is aware of this and continues its effort to keep our constituents well informed about changes to the increasingly complex industry terminology. The definitions are for general reference only. Usage may vary between companies, individuals, or national and country customs. The information presented is as accurate as the authors and editors can ascertain and SGIA assumes no responsibility for the use of information presented herein.
A fugitive, clean, green-shade blue pigment widely used in screen printing inks.
Peak firing temperature
The maximum temperature at which firing of cermet or glass inks can be accomplished without deterioration or destruction of the imprint.
A "pearl-like" appearance produced by adding powdered titanium dioxide and mica as colorants to screen printing ink.
A garment with an irregular or rough surface texture.
A finishing process that gives paper a grainy, ripple surface.
A measure of the force required to remove a material from a test panel at a specified angle and speed after the material was applied to the panel under specific conditions.
A defect caused by detachment of a printed film from the substrate, or detachment of all or portions of a stencil film from the mesh of a printing screen.
Trademarked product, refer to proofing squares.
A display motor that has an oscillating or swinging motion.
A wetting agent that increases ink penetration into a substrate.
The surface absorption of an applied ink or coating by a substrate with a porous surface.
A piece of plastic or cloth that is pointed at the bottom and is usually hung from its top.
Percent dot area
The black area on film exposed and processed, expressed on a scale of 0-100. (A 90 percent dot area in a halftone positive would be equivalent to a 10 percent dot area in the corresponding negative.)
Densitometric relative measure of achromatic density in a color as compared to the major filter density.
Percent open area
The relationship between that part of a screen mesh that is blocked by threads, and that part that is open, or between threads; refer to aperture percentage.
The ability of a chemical to be absorbed through the skin.
An overlay that is prepared by cutting the film portion exactly against the edge of the trapping color.
An offset press that prints both sides of a sheet of paper simultaneously.
A printing press that prints both sides of the sheet with one pass through the machine.
Perforated nickel screen
An electroformed rotary screen with good stability and flexibility characteristics.
A manual or computer drive toothed round object that rotates freely to trace patterns that are brushed with dust or powder to transfer an outline, also called pounce pattern.
The quality of a substance or bond to resist deterioration.
A specification that states the desired operation or function of a product but does not specify the materials from which the product must be constructed.
A vegetable-origin drying oil with properties between tung and linseed oil.