Claims
- 1. An ink jet recording head, comprising:
- a cavity unit including a plurality of nozzle openings arranged in rows, a plurality of pressure chambers arranged in a row and communicating with said nozzle openings, and a vibrating plate for propagating vibrations from piezoelectric vibrators to said pressure chambers; and
- a holding frame for fixing said cavity unit;
- wherein said cavity unit is fixed to said holding frame at portions of said cavity unit on one or more sides of said pressure chambers, not including portions of said cavity unit that oppose said pressure chambers.
- 2. An ink jet recording head as claimed in claim 1, wherein said portions of said holding frame that are fixed to said cavity unit are substantially flat surfaces.
- 3. An ink jet recording head as claimed in claim 2, wherein said substantially flat surfaces have a height variation of 10 .mu.m or less.
- 4. An ink jet recording head as claimed in claim 1, wherein said cavity unit comprises a flow passage plate, and said flow passage plate is made of photo-sensitive resin.
- 5. An ink jet recording head as claimed in claim 2, wherein said cavity unit comprises a flow passage plate, and said flow passage plate is made of photo-sensitive resin.
- 6. An ink jet recording head as claimed in claim 3, wherein said cavity unit comprises a flow passage plate, and said flow passage plate is made of photo-sensitive resin.
- 7. An ink jet recording head as claimed in claim 1, wherein said cavity unit comprises a flow passage plate, and said flow passage plate is formed by plastic injection molding.
- 8. An ink jet recording head as claimed in claim 2, wherein said cavity unit comprises a flow passage plate, and said flow passage plate is formed by plastic injection molding.
- 9. An ink jet recording head as claimed in claim 3, wherein said cavity unit comprises a flow passage plate, and said flow passage plate is formed by plastic injection molding.
- 10. An ink jet recording head as claimed in claim 1, wherein said holding frame has a rigidity higher than that of said cavity unit.
- 11. An ink jet recording head as claimed in claim 2, wherein said holding frame has a rigidity higher than that of said cavity unit.
- 12. An ink jet recording head as claimed in claim 3, wherein said holding frame has a rigidity higher than that of said cavity unit.
- 13. An ink jet recording head as claimed in claim 4, wherein said holding frame has a rigidity higher than that of said cavity unit.
- 14. An ink jet recording head as claimed in claim 1, wherein said piezoelectric vibrators are arranged at equal intervals, leading ends of said piezoelectric vibrators are aligned with each other, and said piezoelectric vibrators form a plurality of vibrator groups which are set in said cavity unit simultaneously.
- 15. An ink jet recording head as claimed in claim 1, wherein said piezoelectric vibrators are arranged at equal intervals, and vibrator-positioning members are arranged on both sides of said, wherein leading ends of said piezoelectric vibrators are aligned with leading ends of said vibrator-positioning members.
Priority Claims (7)
Number |
Date |
Country |
Kind |
3-345343 |
Dec 1991 |
JPX |
|
4-022833 |
Feb 1992 |
JPX |
|
4-25126 |
Feb 1992 |
JPX |
|
4-45195 |
Mar 1992 |
JPX |
|
4-84003 |
Apr 1992 |
JPX |
|
4-103059 |
Apr 1992 |
JPX |
|
4-103060 |
Apr 1992 |
JPX |
|
Parent Case Info
This is a Continuation-in-Part of: application Ser. No. 07/997,571 filed Dec. 28, 1992; application Ser. No. 08/098,934 filed Jul. 29, 1993, which is a Continuation-in-Part of application Ser. No. 07/997,571 filed Dec. 28, 1992; and application Ser. No. 08/179,687 filed Jan. 11, 1994, which is a Continuation-in-Part of application Ser. No. 07/997,571 filed Dec. 28, 1992 U.S. Pat. No. 5,517,225.
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Related Publications (2)
|
Number |
Date |
Country |
|
98934 |
Jul 1993 |
|
|
179687 |
Jan 1994 |
|
Continuation in Parts (3)
|
Number |
Date |
Country |
Parent |
997571 |
Dec 1992 |
|
Parent |
997571 |
Dec 1992 |
|
Parent |
997571 |
Dec 1992 |
|