Impact printers create noise when the pins or typeface strike the ribbon to the paper, and sound-damping enclosures may have to be used in quiet environments.
22.
Impact printers survive where multi-part forms are needed, as the pins can impress dots through multiple layers of paper to make a carbonless copy, for security purposes.
23.
Ironically, whereas the daisy-wheel printer and pen-plotter struggled to reproduce bitmap images, the first dot-matrix impact printers ( including the MX-80 ) lacked the ability to print graphics.
24.
Examples are using a dot matrix impact printer to produce musical notes, using a flatbed scanner to take ultra-high-resolution photographs or using an optical mouse as barcode reader.
25.
External raster image processing was possible such as to print a graphical image, but was commonly extremely slow and data was sent one line at a time to the impact printer.
26.
It is even possible to print Codabar codes using typewriter-like impact printers, which allows the creation of a large number of codes with consecutive numbers without having to use computer equipment.
27.
While the text-quality of a 24-pin was still visibly inferior to a true letter-quality printer & mdash; the daisy wheel or laser-printer, the typical 24-pin impact printer printed more quickly than most daisy-wheel models.
28.
Progressive hardware improvements to impact printers boosted the carriage speed, added more ( typeface ) font options, increased the dot density ( from 60 dpi up to 240 dpi ), and added color printing.
29.
Based on this design, Centronics later made the ( incorrect ) claim to have developed the first dot matrix impact printer ( while the first such printer was the OKI Wiredot in 1968 ).
30.
"' Character matrix printers "'are a category of computer printers ( typically impact printers ) that place characters from a fixed character set anywhere onto a fixed grid of possible locations on the page.
