Claims
- 1. A method of manufacturing an ink jet head, comprising the steps of:
- providing a passage-forming member having a plurality of ink passages, an orifice plate having an array of ejection outlets in liquid communication with respective said ink passages, wherein said orifice plate has a plurality of edge portions and said ejection outlets are arranged along a line that runs parallel to at least one of said edge portions and intersects opposing said edge portions at crossing points, and a confining member for holding said orifice plate against said passage-forming member; and
- holding said orifice plate against said passage-forming member with said confining member only along one confined edge portion parallel to and proximate to said line and at corner portions of said orifice plate, each said corner portion extending along an edge portion from an extremity of said confined edge portion approximately to one of said crossing points.
- 2. A method of manufacturing an ink jet head according to claim 1, wherein said line intersects said opposing said edge portions proximate to corners of said orifice plate.
- 3. An ink jet head comprising:
- a passage-forming member providing a plurality of ink passages;
- an orifice plate having an array of ejection outlets in communication with respective said ink passages, wherein said orifice plate has a plurality of edge portions and said ejection outlets are arranged along a line that runs parallel to at least one of said edge portions and intersects opposing said edge portions at crossing points; and
- a confining member for holding said orifice plate against said passage-forming member only along one confined edge portion parallel to and proximate to said line and at corner portions of said orifice plate, each said corner portion extending along an edge portion from an extremity of said confined edge portion approximately to one of said crossing points.
- 4. An ink jet head according to claim 3, wherein said line is closer to said one of said edge portions than to another of said edge portions opposing said one of said edge portions.
- 5. An ink jet head according to claim 3, further comprising a plurality of energy generating elements, each associated with one of said ink passages and comprising an electrothermal transducer, wherein ink is ejected from said ejection outlets by selective actuation of said energy generating elements.
- 6. An ink jet head according to claim 3, wherein said line intersects said opposing said edge portions proximate to corners of said orifice plate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
241026 |
Sep 1989 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/641,697 filed May 2, 1996 now abandoned, which is a continuation of application Ser. No. 08/385,367 filed Feb. 7, 1995 now abandoned, which is a continuation of application Ser. No. 07/983,695 filed Dec. 1, 1992 now abandoned, which is a division of application Ser. No. 07/905,234 filed Jun. 29, 1992 U.S. Pat. No. 5,189,443, which is a continuation of application Ser. No. 07/583,565 filed Sep. 17, 1990 now abandoned.
US Referenced Citations (17)
Foreign Referenced Citations (6)
Number |
Date |
Country |
3438033 |
Apr 1986 |
DEX |
54-056847 |
May 1979 |
JPX |
59-123670 |
Jul 1984 |
JPX |
59-138461 |
Aug 1984 |
JPX |
60-071260 |
Apr 1985 |
JPX |
55-121081 |
Sep 1990 |
JPX |
Non-Patent Literature Citations (2)
Entry |
W. Crooks et al., "Membrane Nozzle Array With Reduced Thermal Expansion Mismatch Effect", IBM Technical Disclosure Bulletin, vol. 23, No. 2 p. 783 (Jul., 1980). |
L. Missel et al., "Bonding Ink Jet Nozzle Plates To Base Plates", IBM Technical Disclosure Bulletin, vol. 21, No. 1, p. 307 (Jun. 1978). |
Divisions (1)
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Number |
Date |
Country |
Parent |
905234 |
Jun 1992 |
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Continuations (4)
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Number |
Date |
Country |
Parent |
641697 |
May 1996 |
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Parent |
385367 |
Feb 1995 |
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Parent |
983695 |
Dec 1992 |
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Parent |
583565 |
Sep 1990 |
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