Claims
- 1. A thermal ink jet printer print head, comprising:
- a plastic base;
- a metallization layer overlying the plastic base, the metallization layer having a thickness of from about 50 Angstroms to about 1000 Angstroms;
- a dielectric structure overlying the metallization layer, the dielectric structure including
- a metallic buffer layer overlying the metallization layer, the buffer layer having a thickness of greater than about 700 Angstroms, and
- a layer of a dielectric material overlying the metallic buffer layer;
- a resistor overlying the dielectric structure; and
- an orifice plate with an orifice therein and an ink channel overlying the thin film resistor and dielectric structure.
- 2. The print head of claim 1, wherein the plastic base is made of a polyimide plastic.
- 3. The print head of claim 1, wherein the metallization layer is chromium.
- 4. The print head of claim 1, wherein the metallization layer is chromium with a thickness of about 400 Angstroms.
- 5. The print head of claim 1, wherein the buffer layer is titanium.
- 6. The print head of claim 1, wherein the buffer layer is titanium in a thickness of about 1500 Angstroms.
- 7. The print head of claim 1, wherein the dielectric layer is aluminum oxide.
- 8. The print head of claim 1, wherein the dielectric layer is silicon dioxide.
- 9. The print head of claim 1, wherein the dielectric layer is from about 0.1 to about 10 micrometers thick.
- 10. A thermal ink jet printer print head, comprising:
- a plastic base;
- a chromium layer overlying the plastic base, the chromium layer having a thickness of from about 50 Angstroms to about 1000 Angstroms;
- a dielectric structure overlying the chromium layer, the dielectric structure including
- a titanium layer overlying the chromium layer, the titanium layer having a thickness of from about 700 to about 3000 Angstroms, and
- a layer of a dielectric material overlying the titanium layer, the dielectric material having a thickness of from about 0.1 to about 10 micrometers and being selected from the group consisting of aluminum oxide and silicon dioxide; and
- means overlying the dielectric structure for ejecting a droplet of ink.
- 11. The print head of claim 10, wherein the plastic base is made of a polyimide plastic.
- 12. The print head of claim 10, wherein the thickness of the chromium layer is about 400 Angstroms.
- 13. The print head of claim 10, wherein the thickness of the titanium layer is about 1500 Angstroms.
- 14. The print head of claim 10, wherein the thickness of the dielectric material is about 6000 Angstroms.
- 15. The print head of claim 10, wherein the means for ejecting includes an electrical resistor.
- 16. A thermal ink jet printer print head, comprising:
- a plastic base;
- a metallization layer overlying the plastic base, the metallization layer having a thickness of from about 50 Angstroms to about 1000 Angstroms;
- a dielectric structure overlying the metallization layer, the dielectric structure including
- a buffer layer overlying the metallization layer, the buffer layer having a thickness of greater than about 700 Angstroms, and
- a layer of a dielectric material overlying the metallic buffer layer; and
- means overlying the dielectric structure for ejecting a droplet of ink.
- 17. The print head of claim 16, wherein the metallization layer is chromium.
- 18. The print head of claim 16, wherein the buffer layer is made of titanium.
- 19. The print head of claim 16, wherein the dielectric material is selected from the group consisting of aluminum oxide and silicon dioxide.
Parent Case Info
This application is a continuation in part of application Ser. No. 07/168,718, filed Mar. 16, 1988, now U.S. Pat. No. 4,926,197, for which priority is claimed.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4926197 |
Childers |
May 1990 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
168718 |
Mar 1988 |
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