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Non-wetting coating on a fluid ejector

A fluid ejector, wetting layer technology, applied in coatings, metal material coating processes, devices for coating liquids on surfaces, etc., can solve the problems of difficult to form patterns, expensive coatings, not durable coatings, etc., to improve Droplet size, effect of improving reliability

Active Publication Date: 2012-06-20
FUJIFILM DIMATIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Teflon and fluorocarbon polymers are generally flexible and are not durable coatings
These coatings can also be expensive and difficult to pattern

Method used

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  • Non-wetting coating on a fluid ejector
  • Non-wetting coating on a fluid ejector
  • Non-wetting coating on a fluid ejector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Figure 1A is a cross-sectional view of an uncoated fluid ejector 100 (e.g., an inkjet printhead nozzle) that can be configured as described in U.S. Patent Application Serial No. 11 / 256669 filed October 21, 2005. As stated above, the contents of US Patent Application Serial No. 11 / 256669 are incorporated herein by reference. Uncoated fluid ejector 100 includes flow channel module 110 and nozzle layer 120, both of which may be made of silicon (eg, single crystal silicon). In one embodiment, uncoated fluid ejector 100 is a single unit, and flow channel module 110 and nozzle layer 120 are not separate components. Diaphragm layer 182 is located above pumping chamber 135 . Actuator 172 pressurizes fluid (eg, ink, eg, water-based ink) in pumping chamber 135 . Fluid flows through down channels 130 and is ejected through holes 140 in nozzle layer 120 . The actuator 172 may include a piezoelectric layer 176, a lower electrode 178 (eg, a ground electrode), and an upper electro...

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Abstract

A fluid ejector having a first surface, a second surface, and an orifice that allows fluid in contact with the second surface to be ejected. The fluid ejector has a non-wetting layer exposed on at least a first surface of the fluid ejector, and a overcoat layer exposed on a second surface, the overcoat layer being more wetting than the non-wetting layer. Fabrication of this apparatus can include depositing a non-wetting layer on the first and second surfaces, masking the first surface, optionally removing the non-wetting layer from the second surface, and depositing an overcoat layer on the second surface.

Description

[0001] Cross References to Related Applications [0002] This application claims pending U.S. Provisional Application Serial No. 60 / 871763 filed December 22, 2006, pending U.S. Provisional Application Serial No. 60 / 868536 filed December 4, 2006, and pending Priority of pending US Provisional Application Serial No. 60 / 868,328, each of which is incorporated herein by reference in its entirety. technical field [0003] This invention relates to coatings on fluid sprayers. Background technique [0004] A fluid ejector, such as an inkjet printhead, typically has an inner surface, an orifice through which fluid is ejected, and an outer surface. As the fluid is ejected from the orifice, the fluid may accumulate on the exterior surface of the fluid ejector. When fluid accumulates on the outer surface of an adjacent hole, additional fluid ejected from the hole may deviate from the desired forward path, or be completely blocked by interaction with the accumulated fluid (eg, due to s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/14
CPCC23C16/045B41J2/1606B05D1/185C23C16/30B41J2/14233B41J2/135B41J2/14B05D3/04
Inventor 冈村好真
Owner FUJIFILM DIMATIX