Barcode Label Printers
Glossary D
Browse through our glossary to find out definitions for bar coding and RFID terms.
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| Glossary Term | Definition |
| DATA COLLECTION SYSTEM | A system with input devices located at points where data is created. Once captured, the data is immediately transmitted by cable, telephone line or radio signal to a central location, usually in or near a computer room for automatic recording. The data may also be transmitted to a storage medium such as tape, disk or semiconductor memory for later transfer to a host computer application program. |
| DATA COLLECTION TERMINALS | Terminals or scanners with a built-in scanner from an input port that is capable of accepting data from laser and/or CCD scanners. Data collected from scan is routinely stored and transmitted to a host. |
| DATA IDENTIFIER | A specified character or string of characters that defines the intended use of the data element that follows. For the purposes of automatic data capture technologies, data identifier refers to the alphanumeric identifiers as defined in ANSI MH10.8.2, formerly known as ANSI/FACT data identifiers |
| DATA MATRIX | This error correcting, 2-dimensional matrix symbology was originally developed in 1989, and a finalized design was completed in 1995 by International Data Matrix. It's capable of encoding various character sets including strictly numeric data, alphanumeric data and all ISO 646 (ASCII) characters, as well as special character sets. The symbology has both error detection and error correction features. Each Data Matrix symbol consists of data regions, which contain nominally square modules set out in a regular array. |
| DATA STRUCTURE | The stipulation of the type of information that is included in a bar code, such as its order and format. |
| DATA TRANSFER RATE | The rate at which data are transferred between the reader and a tag, generally measured in bits per second (bps). |
| DECODABILITY | Measure of how easily a printed barcode can be deciphered accurately by a bar code reader. |
| DECODER | In a bar code reading system, the electronic package that receives signals from the scanner, performs the algorithm to interpret the signals into meaningful data, and provides the interface to other devices. |
| DEPTH OF FIELD | The distance between the maximum and minimum plane in which a code reader is capable of reading symbols of a specified “X” dimension. |
| DIRECT THERMAL PRINT | (DT) Direct thermal printing is an old technology originally designed for low cost copiers and fax machines. It has since been transformed into a highly successful technology for bar coding. Direct thermal printing uses heat sensitive paper labels to produce black text, barcodes & images, the print typically lasts 6 - 12 months before fading unless exposed to direct sunlight.Direct thermal printing is an excellent choice for many bar code labeling applications. DT printers provide simplicity and environmental economy (recyclable materials are also available). Direct thermal printers are simple to operate compared to most other print technologies with no ribbons or toners to replenish and label loading is a very simple procedure. |
| DISCRETE BAR CODE | Each character of the bar code message stands alone, separated by intercharacter gaps, and can be read independently from the others. |
| DOT SIZE | (Ink Jet) (Dot Matrix) (Thermal) The size of the printed dot laid down on a substrate in a matrix or line to form characters. |
| DPI | Dots per inch (refer to Resolution) |
| DRIVER | A program routine that links a peripheral device, such as a mobile unit's radio card, to the computer system. |
| DSD | Direct Store Delivery Management; A term used in the Retail industry for the automated process of delivering goods and simultaneously electronically updating the store's inventory system. The DEX (Direct Exchange) and UCS (Universal Communications Standard) standards are used to implement DSD. |
| DUAL BAND | An emerging classification of IEEE802.11 wireless products supporting simultaneous operation of 802.11a and 802.11b protocols. |