Method of forming an inkjet printhead with trench and backward peninsulas
US5685074A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Oct 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49346
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A means is provided to eliminate ink trajectory errors when an inkjet printhead is fabricated as described below. In a preferred embodiment, a nozzle member containing an array of orifices is affixed to a barrier layer formed on a substrate, the substrate having heater elements formed thereon. The nozzle member is affixed to the barrier layer using heat and pressure. Each orifice in the nozzle member is associated with a single heating element formed on the substrate. The back surface of the nozzle member extends beyond the outer edges of the substrate. During the heating and pressure step used to affix the nozzle member to the barrier layer, the nozzle member undesirable bends over the outer edges of the barrier layer, causing the nozzles to be tilted outward. Disclosed is a method and design wherein the barrier layer is formed with one or more trenches parallel to the long edges of the barrier layer and with backward peninsulas formed in the barrier layer and extending into the trenches to cause the nozzle member to dip and bend over the trenches and backward peninsulas in an mount approximately equal to the bend into the ink channels on the outer edge of the substrate. The nozzl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.