Ribbon cassette with end of ribbon detector
US4710044A · kind A · utility
11Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1987 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Jan 9, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J35/36
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A ribbon cassette for typewriters is provided with an end-of-ribbon signaling device which takes the form of a switch comprising a contact web on a ribbon tensioning lever associated with the supply spool in the ribbon cassette and two contact pins provided in the machine. The contact web is adapted to bridge the contact pins signaling end of ribbon when the ribbon supply is used up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.