Wire driving mechanism
US5167458A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1991 |
| Grant date | Dec 1, 1992 |
| Priority date | — |
| Expiry date | Jun 27, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/295
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A wire driving mechanism for a wire-dot print head employs a piezoelectric element or a magnetostrictive element as a driver (5). To enable printing with a satisfactorily high print quality, the wire driving mechanism employs the extensional force of the driver (5) to pivot two generally parallel levers (3a, 3b) respectively having fixed ends. When the levers (3a, 3b) are pivoted, the free end of each of the levers (3a, 3b) is moved by a displacement which is a multiple of the extension of the driver (5). The respective displacements of the free ends of the levers (3a, 3b) are transmitted by a pair of support members (6a, 6b) to opposite sides of a driving member (8) at positions on different levels with respect to the longitudinal direction of the driving member (8). As a result, the driving member (8) is moved so that a print wire (7) attached to the driving member (8) is advanced in a printing direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.