Printing system
US4503445A · kind A · utility
Inventor
Key dates
| Filing date | Aug 19, 1983 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Aug 19, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Pressure transients are used to produce motion for high speed printing of DOTS; in a first embodiment each printing element in an array of printing elements has the form of an angled rigid tube sealed at the ends; one end is fixed, the other end is free to move; the tube is filled with suitable fluid and has two electrodes associated with it and the fluid; a spark across the electrodes on demand produces a pressure transient by expanding the fluid, in turn tending to straighten or otherwise suitably deform the angled tube in a direction advancing the free end for printing; in a second embodiment employing ink as the fluid, a ball point pen arrangement dispenses ink as the second end advances on spark actuation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.