Multi-channel array actuation system for an ink jet printhead
US5581286A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Jan 12, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14379
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A spot size modulatable, drop-on-demand type ink jet printhead and associated methods for ejecting volume modulatable droplets of ink therefrom. The ink jet printhead includes a main body portion having first and second ink carrying channels longitudinally extending therethrough and a cover plate fixedly mounted thereto. Formed in the cover plate is a tapered orifice which extends from first and second openings along a back side surface to a third opening along a front side surface thereof. The cover plate is mounted to the main body portion such that the first opening is in communication with the first ink carrying channel and the second opening is in communication with the second ink carrying channel. The ink jet printhead further includes first and second actuators coupled with the first and second ink carrying channels, respectively. Volume modulatable droplets of ink may be ejected from the ink jet printhead by simultaneously applying a voltage pulse having a selected magnitude to the first ink carrying channel and a voltage pulse having a magnitude ranging between zero and the selected magnitude to the second ink carrying channel. Alternately, volume modulatable droplets of i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.