Ribbon feed mechanism responsive to case shaft mechanism and printing mechanism
US4140407A · kind A · utility
6Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1977 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Aug 18, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J35/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A ribbon feed mechanism for a typewriter has a linkage for incrementally feeding a ribbon, a power roll rotated by a motor and a control member actuated by a printing mechanism for connecting the power roll to the linkage to incrementally feed the ribbon. The control member is also actuated by a carriage shift mechanism when shifting a carriage from an upper case position to a lower case position for connecting the power roll to the linkage to incrementally feed the ribbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.