Thermal Printing Glossary
- air holes
The holes punched through tags so that strings may be affixed to the tag and then attached usually to a garment, piece of jewelry, shrubbery, etc.
- bar code
A binary coding system consisting of vertical marks or bars that, when read by an optical scanner, can be converted into machine language; An automatic identification technology that encodes information into an array of adjacent varying width parallel rectangular bars and spaces.
- bar code character
A single group of bars and spaces that represent a specific number, letter, punctuation mark or other symbol; the smallest subset of a bar code symbol that contains data.
- bar code density
- The number of data characters that can be represented in a linear unit of measure, often expressed in characters per inch.
- bar code reader
A device used to read a bar code symbol, usually connected to a CRT or personal computer.
- black stripe
A black line pre-printed on the back side of the label or tag that printers equipped with reflective sensors use to signal the end of one label and the top of the next.
- Centronics connector
A 36-pin connector usually used for parallel applications, especially printers.
- coated paper/tag
Paper or tag stock which has one or both surfaces covered with a substance to produce certain desired properties for use in specific printing processes.
- die cut
- The severance line between a pressure-sensitive label and its matrix or adjoining label, made by the cutting edge of a die.
- direct thermal
- A printing system using heat sensitive paper in which heated areas of the paper turn dark.
- edge notches
- Holes punched on either one/both sides or the center of the label that printers equipped with transmissive sensors use to signal the end of one label on the top of the next.
- Any paper, film or foil material that can be converted into labels; Retains the printed image.
- The band of light wavelengths too long to be seen by the human eye; represented by waves that are between 750 and 4 million nanometers.
- A vertical bar code presented in such a manner that its overall length dimension is perpendicular to the horizon; the bars are presented in an array which look like a ladder.
- Web of material formed by bonding two or more materials together; in labels, the liner, adhesive and facestock.
- laser scanner
- An optical bar code reading device using a low energy laser light beam as its source of illumination.
- light pen
- In a bar code system, a hand held scanning wand that is used as a contact bar code reader held in the hand (wand scanner).
- picket fence
- A horizontal bar code presented in such a manner that its overall length dimension is parallel to the horizon; The bars are presented in an array which look like a picket fence.
- pressure sensitive label
- Label material with adhesive backing and protective silicone-coated release liner to permit it to adhere instantly to most surfaces with the application of slight pressure.
- print quality
- The measure of compliance of a bar code symbol to the requirements of dimensional tolerance, edge roughness, spots, voids, reflectance, print contrast, quiet zone, and encodation.
- processing temperature
- The temperature a label would be expected to withstand as its normal environment.
- quiet zone
- A clear space, containing no machine readable marks, which precedes the start character of a bar code symbol and follows the stop characters.
- The light which is reflected from the white spaces of a bar code during scanning; this light is converted to an electrical signal, amplified and transmitted to a data entry terminal.
- removable adhesives
- Pressure sensitive adhesive that offers low ultimate adhesion to a variety of surfaces for easy removal.
- repositionable adhesive
- Pressure sensitive adhesive that can be cleanly removed and repositioned on a variety of surfaces.
- In a bar code system, the narrowest element dimension which can be distinguished by a particular reading device or printed with a particular device or method.
- An electronic device that electro-optically converts optical information into electrical signals.
- The tendency of an image to smear or streak onto an adjacent area when rubbed; involves the redisposition of abraded material.
- thermal transfer
- A printing system where dots are selectively heated against a ribbon and common paper is used as a substrate; usually produces the highest print quality and eliminates the problems of fading or changing color inherent in direct thermal.
- High frequency light present in sunlight, which causes fading of printed characters especially direct thermal images.
- Universal Product Code (UPC)
- The standard bar code symbol for retail food packages in the United States.
- visible light
- Used in some hand laser scanners to project a beam of light visible to the human eye, simplifying the scanning process.