| 单词 | printer |
| 释义 | printer A device for producing a printed version of text (and, sometimes, pictures) from a computer. There are several types. Impact printers work on the same principle as a typewriter, in which a ribbon is hit by a surface embossed with the character. A line printer produces a whole line of text at a time. In this device the characters are held on a row of spinning cylinders. In a daisywheel printer , the characters are held on the ends of a series of arms radiating from the centre of a wheel. A dot-matrix printer forms the image of each character from a rectangular matrix of dots. An inkjet printer works by spraying fine jets of quick-drying ink onto the paper. A laser printer uses a xerographic technique in which a photosensitive plate is scanned by a low-power laser |
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