Ink drop writing apparatus
US4060813A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1976 |
| Grant date | Nov 29, 1977 |
| Priority date | — |
| Expiry date | Mar 17, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an apparatus of the type wherein ink under pressure is applied to a nozzle which is vibrated so that the ink emitted from the nozzle thereafter breaks up into ink drops which are charged in a charging tunnel in response to a video signal, means are provided, in accordance with this invention, for compensating the amount of charge on each ink drop or the strength of the deflecting field action on the ink drop, on the basis of information from a detecting means which detects the amount of deflection of one or more calibrating drops periodically so that the amount of deflection of the drop of writing fluid for a given charge may be held to a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.