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The 1443 was initially introduced October 11, 1962 for use with the IBM 1440 system and withdrawn February 8, 1971.[5] It was announced in 1963 for the 1620 system.The printer could also be used on theIBM 1620[2] (announced 1963[6]),IBM 1710,[2] IBM 1800[7]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]
The IBM 1443 Printer was introduced as part of the IBM 1440 system.[9] 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[9] are easily interchangeable, with options for character sets containing 13, 39, 52,[10] or 63 characters.
The print speeds vary according to the model and the character set.[11]
| 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] with additional options for single, double or triple-spacing.[2]
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]
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 In 1959 this technology was superseded with the introduction of the IBM 1403 chain printer;[16] both the 1132 and 1403 were available with the 1130.
