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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.
The worth of the Ludlow lies in the fact that the printer always has fresh, clean type to print from, and never has to worry about running out of sorts. The Ludlow is used primarily for headline-sized type 14 point and above, although mats were formerly made in many typefaces as small as 4 points. The mats themselves were made out of a brass ...
It utilized the ASCII character set and used continuous form paper, or with an optional feeder, cut sheet paper. The printer included several different 130-character "daisy" print wheels (e.g., Courier, Prestige Elite, Gothic, Executive) in English, French, German, and other languages. These 130-character print wheels are unique to the Apple ...
Each of the 120 print positions had its own type wheel which rotated under electromechanical control. Once all were in position, print hammers struck the wheels against a ribbon and the paper. The 407 or its wheel line printer mechanism was attached to a variety of early IBM computers, including the IBM 650 , most members of the IBM 700/7000 ...
A letter-quality printer was a form of computer impact printer that was able to print with the quality typically expected from a business typewriter such as an IBM Selectric. A letter-quality printer operates in much the same fashion as a typewriter. A metal or plastic printwheel embossed with letters, numbers, or symbols strikes an inked ...
Technical lettering is the process of forming letters, numerals, and other characters in technical drawing. It is used to describe, or provide detailed specifications for, an object. With the goals of legibility and uniformity, styles are standardized and lettering ability has little relationship to normal writing ability.
A printer in Leipzig inspecting a large forme of type on a cylinder press in 1952. Each of the islands of text represents a single page. The darker blocks are images. The whole bed of type is printed on a single sheet of paper, which is then folded and cut to form many individual pages of a book.
It was claimed that a roller copier could make a half dozen copies of a typewritten letter if the letter was run through the copier several times. It could make a dozen copies if the letter was written with a pen and good copying ink. The Process Letter Machine Co. of Muncie, Indiana, offered the New Rotary Copying Press, a loose-leaf copier ...