Ink ribbon and correction tape cassette compatibility
US4900171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J32/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A means for assuring ink ribbon and correction tape compatibility in a device which utilizes a first cassette having an ink ribbon therein and second cassette having a correction tape therein including a switch means in the device that controls the on-off condition of the device, and means located on one of the cassettes which will activate the on-off switch only when the device contains an ink ribbon in the first cassette which is functionally compatible with the correction tape in the second cassette, such as, for example, functional compatibility between a single-strike ink ribbon and a lift-off correction tape, or functional compatibility between a multiple-strike ink ribbon and a cover-up correction tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.