| abstract |
A print head for ink-jet printing including an orifice plate with an intermediate layer of reinforcement material bonded thereto, an ink barrier layer, and an adhesion promoter located between the intermediate layer and the barrier layer. The adhesion promoter bonds the intermediate layer to the barrier layer. Exemplary adhesion promoters include organosilane compositions, polyacrylic acid, polymethylacrylic acid, and mixtures thereof. Representative intermediate layers include oxidizable metals (e.g. chromium, tantalum, and mixtures thereof) and silicon-containing compositions (e.g. silicon dioxide, silicon nitride, silicon carbide, and mixtures thereof). In a process for making a print head, an adhesion promoter is applied to the orifice plate/intermediate layer combination which is thereafter bonded to the barrier layer using the adhesion promoter. All of these components are secured together through the application of pressure and heat. |