Carriage operated ribbon drive and reverse mechanism
US3939957A · kind A · utility
16Cited by
13References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1973 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Dec 11, 1993 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J33/518
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printer arrangement of the type which prints data serially along a line on a record medium by relative impact of type characters and record medium through a ribbon. Printing is a mixture of stop and go printing, essentially a character at a time, and continuous printing of a plurality of characters. Driving power for the ribbon is derived from carriage movement on which the print head is mounted through controllable clutch and toggle switch action. The toggle switch action reverses ribbon drive direction in response to a depletion of ribbon signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.