These were the world's first family of products where the same technology was used to make a series of 4 models having a range of printing speeds separated by a factor of 8—from 75line/min (OEM only) to 600line/min. A simple mechanism was achieved by modularizing core printing components (hammer, yoke, paper feed etc.) These printers used Hitachi's first paper feed step motor endless ribbon. Size and weight were greatly reduced using a mechanical frame structure comprised of sheet metal. The first high-volume exports were achieved with OEM.
| H-8141-31/32 | H-8142-11/12 | H-8143-31/32 | |
|---|---|---|---|
| Max. number of characters printed per line | 136char/line | ||
| Printing speed | 165line/min | 315line/min | 605line/min |
| Kinds of type | Alphabetic,Numeric,Special symbols,(Kana) | ||
| Announcement date | 1976 | ||
