Claims
- 1. A substrate for use with a liquid jet recording head comprising:
- a semiconductor substrate;
- functional elements formed on said semiconductor substrate;
- control electrodes formed between adjacent functional elements; and
- electro-thermal transducers electrically connected to said functional elements for generating thermal energy to be utilized to discharge liquid,
- said substrate comprising a common electrode electrically connected to said functional elements in common, said common electrode having a notch at a position facing said control electrodes.
- 2. A substrate according to claim 1, wherein said electro-thermal transducers are formed on said semiconductor substrate.
- 3. A substrate according to claim 1, wherein said central electrodes of said functional elements serve to isolate the operation of each of said functional element from other functional elements.
- 4. A substrate according to claim 1, wherein said functional elements are diodes.
- 5. A substrate according to claim 1, wherein said functional elements are transistors.
- 6. A substrate according to claim 1, wherein said central electrodes between said functional elements are formed on an N.sup.+ layer.
- 7. A substrate according to claim 6, wherein said central electrodes are made of aluminum.
- 8. A substrate according to claim 6, wherein said central electrodes are formed to surround the individual functional elements.
- 9. A substrate according to claim 1, wherein said electro-thermal transducers are formed on said semiconductor substrate with the intervention of a protective layer for said functional elements.
- 10. A substrate according to claim 9, wherein said protective layer is made of an inorganic oxide.
- 11. A substrate according to claim 10, wherein said inorganic oxide is SiO.sub.2.
- 12. A liquid jet recording head comprising:
- discharge ports for discharging liquid;
- electro-thermal transducers provided for said discharge ports for generating thermal energy to be used to discharge the liquid;
- a semiconductor substrate;
- functional elements electrically connected to said electro-thermal transducers and formed on said semiconductor substrate;
- a common electrode electrically connected to said functional elements; and
- control electrodes formed between adjacent functional elements, said common electrode having a notch at a position facing said control electrodes.
- 13. A liquid jet recording head according to claim 12, wherein said electro-thermal transducers are formed on said semiconductor substrate.
- 14. A liquid jet recording head according to claim 12, wherein said electro-thermal transducers are formed on said semiconductor substrate with the intervention of a protective layer for protecting said functional elements.
- 15. A liquid jet recording head according to claim 14, wherein said protective layer is made of an inorganic oxide.
- 16. An ink jet recording head according to claim 15, wherein said inorganic oxide is SiO.sub.2.
- 17. An ink jet recording head according to claim 12, wherein said central electrodes of said functional elements serve to isolate the operation of each of said functional elements from other functional elements.
- 18. An ink jet recording head according to claim 12, wherein said functional elements are diodes.
- 19. An ink jet recording head according to claim 12, wherein said functional elements are transistors.
- 20. An ink jet recording head according to claim 12, wherein said central electrodes between said functional elements are formed on an N.sup.+ layer.
- 21. An ink jet recording head according to claim 20, wherein said central electrodes are made of aluminum.
- 22. An ink jet recording head according to claim 17, wherein said central electrodes are formed to individually surround functional elements.
- 23. An ink jet recording head according to claim 12, further comprising an ink tank for storing the liquid therein to be supplied to said head.
- 24. An ink jet recording head according to claim 23, further comprising a terminal on an external surface of said head for supplying an electrical signal to said head.
- 25. In a recorder having a liquid tank for storing liquid therein to be supplied to said liquid jet recording head, and a platen along which a record medium is guided for receiving the liquid discharged from said liquid jet recording head, a liquid jet recording head comprising:
- discharge ports for discharging liquid;
- electro-thermal transducers provided for said discharge ports for generating thermal energy to be utilized to discharge the liquid;
- a semiconductor substrate;
- functional elements electrically connected to said electro-thermal transducers and formed on said semiconductor substrate;
- a common electrode electrically connected to said functional elements; and
- control electrodes formed between adjacent functional elements,
- said common electrode having a notch at a position facing said control electrodes.
- 26. A recorder according to claim 25 wherein said electro-thermal transducers are formed on said semiconductor substrate.
- 27. A recorder head according to claim 25 wherein said electro-thermal transducers are formed on said semiconductor substrate with the intervention of a protective layer for protecting said functional elements.
- 28. A recorder according to claim 27 wherein said protective layer is made of an inorganic oxide.
- 29. A recorder according to claim 28 wherein said inorganic oxide is SiO.sub.2.
- 30. A recorder according to claim 25 wherein said central electrodes of said functional elements serve to isolate the operation of each of said functional elements from other functional elements.
- 31. A recorder according to claim 25, wherein said functional elements are diodes.
- 32. A recorder according to claim 25, wherein said functional elements are transistors.
- 33. A recorder according to claim 25, wherein said central electrodes between said functional elements are formed on an N.sup.+ layer.
- 34. A recorder according to claim 33, wherein said central electrodes are made of aluminum.
- 35. A recorder according to claim 30, wherein said central electrodes are formed individually surrounding said functional elements.
- 36. A recorder according to claim 25, wherein said liquid jet recording head and said ink tank are integrally constructed.
- 37. A recorder according to claim 25, wherein said liquid jet recording head and said ink tank are integrally constructed and an electrical terminal is formed on an external surface of the internal surface.
- 38. A recorder according to claim 25, further comprising capping means.
- 39. A recorder according to claim 38, wherein said capping means has a cap for covering said discharge ports of said recording head and a pump for sucking liquid in said recording head through said cap.
- 40. A recorder according to claim 25, wherein a carriage is reciprocally movable along said platen.
- 41. A liquid jet recording head having discharge ports for discharging liquid, a liquid path connected to said discharge ports and electrothermal transducers provided for each of said discharge ports, said recording head comprising:
- functional elements formed on the same substrate as that of said electro-thermal transducers, said functional elements independently driving said electro-thermal transducers;
- a supply electrode pattern arranged on said substrate with the intervention of said functional elements for supplying a drive current to said elector-thermal transducer;
- a control electrode pattern for controlling the supply of the drive current in said functional elements isolating the operation of said functional elements from other operations;
- said supply electrode pattern and said control electrode pattern being designed such that a crossing area of said supply electrode pattern and said control electrode pattern is minimized.
- 42. A substrate for a liquid jet recording head having electrothermal transducers formed thereon for generating discharge energy to discharge liquid, said substrate comprising:
- functional elements formed on said substrate for independently driving said electro-thermal transducers;
- a supply electrode pattern arranged on said substrate with the intervention of said functional elements for supplying a drive current to said elector-thermal transducer;
- a control electrode pattern for controlling the supply of said drive current in said functional elements or isolating the operation of said functional elements from other operations;
- said supply electrode pattern and said control electrode pattern being designed such that a crossing area of said supply electrode pattern and said control electrode pattern is minimized.
- 43. A substrate for use with a liquid jet recording head comprising:
- functional elements formed on said substrate;
- electrodes formed between adjacent functional elements;
- electro-thermal transducers electrically connected to said functional elements for generating thermal energy to be utilized to discharge liquid; and
- a common electrode formed on said substrate and electrically connected to said functional elements in common, said common electrode having a notch at a position facing said electrodes.
- 44. A liquid jet recording head comprising:
- discharge ports for discharging liquid;
- electro-thermal transducers provided for said discharge ports for generating thermal energy to be utilized to discharge the liquid;
- a substrate;
- functional elements electrically connected to said electro-thermal transducers and formed on said substrate;
- electrodes formed between adjacent functional elements; and
- a common electrode formed on said substrate and electrically connected to said functional elements in common, said common electrode having a notch at a position facing said electrodes.
- 45. A liquid jet recording head according to claim 44, wherein the thermal energy generated by said electro-thermal transducer discharges a liquid jet.
- 46. A liquid jet recording head according to claim 45, wherein the liquid jet comprises a liquid droplet.
- 47. In a liquid jet recording apparatus having a liquid tank for storing liquid therein to be supplied to said liquid jet recording head, and a platen along which a record medium is guided for receiving the liquid discharged from said liquid jet recording head, a liquid jet recording head comprising:
- discharge ports for discharging liquid;
- electro-thermal transducers provided for said discharge ports for generating thermal energy to be utilized to discharge the liquid;
- a substrate;
- functional elements electrically connected to said electro-thermal transducers and formed on said substrate;
- electrodes formed between adjacent functional elements; and
- a common electrode formed on said substrate and electrically connected to said functional elements in common, said common electrode having a notch at a position facing said electrodes.
- 48. A substrate for use in a recording unit, the substrate comprising:
- functional elements;
- a first electrode formed between said functional elements; and
- a second electrode formed above said first electrode;
- wherein said second electrode has a notch at a position facing said first electrode and said first and said second electrodes are electrically connected to at least one of said functional elements.
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-184688 |
Jul 1988 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/622,186 filed Dec. 5, 1990, now abandoned, which in turn is a continuation of application Ser. No. 07/382,904, filed Jul. 21, 1989, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4429321 |
Matsumoto |
Jan 1984 |
|
4467345 |
Ozawa |
Aug 1984 |
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Continuations (2)
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Number |
Date |
Country |
Parent |
622186 |
Dec 1990 |
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Parent |
382904 |
Jul 1989 |
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