Printing apparatus for cash register
US4018154A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Feb 11, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J9/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Printing apparatus particularly suited to a cash register includes a hammer arranged to move printing paper into engagement with type wheels located on the other side of the paper. A cam and linkage move the hammer into and out of contact with the paper. Strong springs are provided to rapidly accelerate the hammer toward the paper through an engaging plate. The engaging plate is stopped before the hammer contacts the paper, and the hammer strikes the paper due to its inertia. The hammer rebounds off the paper and is caught and held by the linkage in the rebound position between the paper and the engaging plate to prevent double printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.