Ribbon mask and guide for dot matrix impact printers
US4165188A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1977 |
| Grant date | Aug 21, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J35/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A ribbon mask for a wire or stylus-type dot matrix print head is carried with the print head, positioned between the print ribbon and the printing surface, and has a forwardly-angled integral flange extending from along a portion of the top of the main body of the ribbon mask. The flange rigidifies the intersection where the main body of the mask meets the flange, so that curving the ribbon mask along its longitudinal axis forms a generally triangular, forwardly-biased face adjacent the printing surface. Centrally located within the face is a vertically-oriented oval opening through which pass the printing wires as they move toward and strike the ribbon against the printing surface to form dot characters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.