Chemical print element
US4343555A · kind A · utility
4Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1980 |
| Grant date | Aug 10, 1982 |
| Priority date | — |
| Expiry date | May 5, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S400/904
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a novel print element for a serial impact printer having a novel character set which permits the typing of text as well as chemical symbols and formulae with a small number of character elements. Closed ring structures may be formed with the character set which may be expanded to various sizes. Also disclosed is a serial impact printing system using the aforementioned printing element which automatically subscripts small numerals when the printing element is positioned without further action on the part of the typist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.