What Does Line Printer Mean?
A line printer is an impact printer which makes use of a continuous feed of paper and prints one line of text at a time. Although they have been replaced in most instances by high-speed laser printers, they are still used in some business as they are low cost and have the ability to print on multi-part forms.
Techopedia Explains Line Printer
Line printers make use of continuous form paper which is usually perforated instead of individual cut sheets. Line printers print the full width of the page, one line of text at a time, instead of a print head moving back and forth across the page. The two main types of line printers are chain printers and drum printers. Although the basic printing technology used in line printers dates back to the 1930s, they are still suited for high-speed printing.