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The speed of early printers was measured in units of characters per minute (cpm) for character printers, or lines per minute (lpm) for line printers. Modern printers are measured in pages per minute (ppm). These measures are used primarily as a marketing tool, and are not as well standardised as toner yields. Usually pages per minute refers to ...
Comb printers, also called line matrix printers, printed a matrix of dots instead of individual characters in the same way as single-character dot matrix printers, but using a comb of hammers to print a portion of an entire row of pixels at one time (for example, every eighth pixel). By oscillating the comb or "print shuttle" left and right a ...
The two-tone buzz produced by 60-character-per-second catch-up printing followed by 30-character-per-second ordinary printing was a distinctive feature of the LA36, quickly copied by many other manufacturers well into the 1990s. Most efficient dot matrix printers used this buffering technique.
Because the printing involves mechanical pressure, these printers can create carbon copies and carbonless copies. Both line matrix and serial dot matrix printers use pins to strike against the inked ribbon, making dots on the paper and forming the desired [2] characters. The difference is that a line matrix printer uses a hammer bank (or print ...
The first IBM band printer, it was released in 1974. It is a 155 lpm printer with a 48 character set and uses one hammer for two print positions. It has 80 printer positions, but could be ordered with 132 print positions as a feature. It is part of the IBM 3600 banking system and is loop attached to an IBM 3601 controller.
The IBM 1416 is an interchangeable train cartridge introduced with the 1403-N1 and also used with the IBM 3203. This means instead of using a chain of linked characters, the printer uses a train of unlinked characters. The cartridge allows the operator to change the font and/or character set arrangement being used by the printer.
Close-up view of dot matrix text produced by a printer Dot matrix pattern woven into fabric in 1858 using punched cards on a Jacquard loom Dot matrix-style skywriting. A dot matrix is a 2-dimensional patterned array, used to represent characters, symbols and images.
Daisy wheel printing is an impact printing technology invented in 1970 by Andrew Gabor [1] at Diablo Data Systems.It uses interchangeable pre-formed type elements, each with typically 96 glyphs, to generate high-quality output comparable to premium typewriters such as the IBM Selectric, but two to three times faster.
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