The IBM 1443 Printer (sometimes referred to as the 1443 Flying Type Bar Printer [1] ) is an obsolete computer line printer used in the punched card era. It was offered in three models: Models 1, 2 and N1; the last two could print up to 240 lines per minute (LPM) with a full character set. [2] [3] [4]
The 1443 was initially introduced October 11, 1962 for use with the IBM 1440 system and withdrawn February 8, 1971. [5] It was announced in 1963 for the 1620 system. The printer could also be used on the IBM 1620 [2] (announced 1963 [6] ), IBM 1710, [2] IBM 1800 [7] and System/360. [3]
Decades later IBM recycled the 1443 model number to refer to a different product. [8]
Beginning in 1920, IBM developed a series of printers
These IBM printers, as did others of the early punched card era, use "type bars," originally developed for their line of accounting machines. [9] (The model 1403 introduced new technology.)
Type bars are vertical bars, one for each print position in a line. Each bar is one character wide with the printer's entire character set: either alphabetic characters, including numerals and symbols, or just numerals and symbols, molded into the front surface in a single column. In printing, each bar is raised up until the correct character for that print position was opposite the paper, whereupon the bar is pushed toward the paper, so that the correct numeral or letter pressed against the ribbon, striking the paper much the way type slugs leave an impression on paper in a standard typewriter. This action is relatively slow, as it takes time for each bar to be brought up into the correct position and then drop back down in preparation to print the next line.
The IBM 1443 Printer was introduced as part of the IBM 1440 system. [10] The 1443 Model 1 prints alphanumeric, upper-case only, output at a basic rate of 150 lines per minute, and it can print up to 430 lines a minute with a restricted character set, depending upon the type bars used. The Model 2's and Model N1's corresponding speeds are 240 and 600 LPM. [3]
The typebars [10] are easily interchangeable, with options for character sets containing 13, 39, 52, [11] or 63 characters.
The print speeds vary according to the model and the character set. [2] [3] [12]
Character set size | Model 1 | Model 2 | Model N1 |
---|---|---|---|
13 | 430 | 600 | 600 |
39 | 190 | 300 | 300 |
52 | 150 | 240 | 240 |
63 | 120 | - | 200 |
The 1443 printer uses 120 or 144 print hammers and hammer magnets, [13] conceptually similar to the IBM 1132 printer's one-per-column print magnets.
Output is formatted at 10 characters per inch, with a choice of six or eight lines per inch, [2] : p.1 with additional options for single, double or triple-spacing. [2] : p.3
The 1443 uses fan-folded paper with perforated edges for tractor feeding. A carriage control tape specifies form length and the form line where printing was to begin so that paper of various sizes could be used. A carriage control tape simplifies use of pre-printed forms and the programming needed to allow proper alignment. [2] : p.3
Type bars were replaced by type wheels or a drum in later printers, most notably:
The 1132 was the last printer manufactured by IBM to use the 407's technology. In 1959 this technology was superseded with the introduction of the IBM 1403 chain printer; [16] both the 1132 and 1403 were available with the 1130.
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A typewriter is a mechanical or electromechanical machine for typing characters. Typically, a typewriter has an array of keys, and each one causes a different single character to be produced on paper by striking an inked ribbon selectively against the paper with a type element. Thereby, the machine produces a legible written document composed of ink and paper. By the end of the 19th century, a person who used such a device was also referred to as a typewriter.
A line printer prints one entire line of text before advancing to another line. Most early line printers were impact printers.
The IBM 1620 was announced by IBM on October 21, 1959, and marketed as an inexpensive scientific computer. After a total production of about two thousand machines, it was withdrawn on November 19, 1970. Modified versions of the 1620 were used as the CPU of the IBM 1710 and IBM 1720 Industrial Process Control Systems.
The IBM 1440 computer was announced by IBM October 11, 1962. This member of the IBM 1400 series was described many years later as "essentially a lower-cost version of the 1401", and programs for the 1440 could easily be adapted to run on the IBM 1401.
The IBM 1130 Computing System, introduced in 1965, was IBM's least expensive computer at that time. A binary 16-bit machine, it was marketed to price-sensitive, computing-intensive technical markets, like education and engineering, succeeding the decimal IBM 1620 in that market segment. Typical installations included a 1 megabyte disk drive that stored the operating system, compilers and object programs, with program source generated and maintained on punched cards. Fortran was the most common programming language used, but several others, including APL, were available.
The IBM 1403 line printer was introduced as part of the IBM 1401 computer in 1959 and had an especially long life in the IBM product line.
The IBM 407 Accounting Machine, introduced in 1949, was one of a long line of IBM tabulating machines dating back to the days of Herman Hollerith. It had a card reader and printer; a summary punch could be attached. Processing was directed by a control panel.
The IBM 1132 line printer was the normal printer for the IBM 1130 computer system. It printed 120 character lines at 80 lines per minute. The character set consisted of numbers, upper-case letters and some special characters.
The Teletype Corporation, a part of American Telephone and Telegraph Company's Western Electric manufacturing arm since 1930, came into being in 1928 when the Morkrum-Kleinschmidt Company changed its name to the name of its trademark equipment. Teletype was responsible for the research, development and manufacture of data and record communications equipment, but it is primarily remembered for the manufacture of electromechanical teleprinters.
The IBM 2780 and the IBM 3780 are devices developed by IBM for performing remote job entry (RJE) and other batch functions over telephone lines; they communicate with the mainframe via Binary Synchronous Communications and replaced older terminals using synchronous transmit-receive (STR). In addition, IBM has developed workstation programs for the 1130, 360/20, 2922, System/360 other than 360/20, System/370 and System/3.
Continuous stationery (UK) or continuous form paper (US) is paper which is designed for use with dot-matrix and line printers with appropriate paper-feed mechanisms. Other names include fan-fold paper, sprocket-feed paper, burst paper, lineflow, tractor-feed paper, and pin-feed paper. It can be single-ply or multi-ply, often described as multipart stationery or forms. Continuous stationery is often used when the final print medium is less critical in terms of the appearance at the edges, and when continuously connected individual sheets are not inconvenient for the application. Individual sheets can be separated at the perforation, and sheets also have edges with punched holes, which also can be removed at the perforation.
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A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with computer card punches and, later, other devices to form multifunction machines.
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IBM developed, manufactured and sold hammer-based impact printers that used either type bars, a chain, a train, or a band to create printed output from 1959 till 1999, replacing the older print drum technology,. Over the course of this time they produced a wide variety of these line printers. This article will detail the most significant ones. Note that while IBM initially described band printers as belt printers, they are effectively the same thing.