Reduced diameter wire tips in a wire printing head
US5169246A · kind A · utility
Inventors
Key dates
| Filing date | Jul 16, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Jul 16, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/255
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A wire printing head for a high resolution printing machine is provided together with a method for its manufacture. The printer is of the type comprising a printing platen for a recording medium and a carriage transversely movable with respect to the printing platen and mounting the printing head. The head comprises a guide matrix adjacent the platen and a plurality of printing wires or needles guided by the matrix. The wires are capable of longitudinal movement and define on the recording medium printing dots having an area less than the nominal section (Sn) of the wires. Each wire comprises a front portion of constant section (Sr) which is reduced with respect to the nominal section (Sn) and extends for a minimized length of between 0.5 and 4 times inclusive the diameter (Dr) of the reduced section. The guide matrix supports slidably a terminal portion of the wires comprising the nominal section and lodges with play the frontal portion having the reduced section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.