Claims
- 1. A method of manufacturing a piezo-electric driver for an ink jet recording head comprising the steps of:
- laminating a piezo-electric material and a conductive material to form a piezo-electric plate having a front end face and having at least a front end portion which includes an inactive region;
- mounting a front end plate having a front end face on at least a first surface of said inactive region in such a manner that said front end face of said front end plate is flush with said front end face of said piezo-electric plate; and
- cutting said piezo-electric plate together with said front end plate at predetermined intervals to form a plurality of piezo-electric elements.
- 2. A method as claimed in claim 1 wherein said laminating step comprises forming a rear end portion of said piezo-electric plate, said rear end portion including an inactive region, and further comprising mounting a rear end plate on said inactive region of said rear end portion.
- 3. A method as recited in claim 1 or 2 wherein said front end plate is a plate made of free-cutting ceramic material and further comprising sintering said front end plate of free-cutting ceramic material and said piezo-electric plate for form a single unit.
- 4. A method as claimed in claim 3 wherein said sintering step is performed separately on said front end plate and said piezo-electric plate before said mounting step.
- 5. A method as claimed in claim 2 further comprising the steps of:
- laying down plate forming layers on said inactive regions on at least one side of said piezo-electric plate; and
- cutting said piezo-electric plate and said plate forming layers along lines which divide said plate forming layers into said front end plates and said rear end plates.
- 6. A method as claimed in claim 1 or 5 further comprising overlapping two kinds of internal electrode patterns on said piezo-electric material with a reference portion which is provided in said piezo-electric material.
- 7. A method as claimed in claim 6 further comprising forming said piezo-electric plate so that said internal electrode patterns do not appear on both sides thereof.
- 8. A method of manufacturing a piezo-electric vibrator assembly comprising the steps of:
- forming a laminate comprised of a piezo-electric material layer and a conductive material layer;
- laying longitudinal plate forming materials each defining a front end plate and a rear end plate as a single unit onto said laminate in a longitudinal direction of said laminate;
- laying lateral plate forming materials onto said laminate in a lateral direction of said laminate;
- cutting said laminate longitudinally along lines which divide said plate forming materials into said front end plates and said rear end plates; and
- cutting said laminate laterally along lines which substantially divide said lateral plates into two parts.
- 9. A method as claimed in claim 2 wherein the front end portion of said piezo-electric plate is cut at predetermined intervals until a cutting line reaches a straight line connecting a rear edge of said front end plate on said piezo-electric plate and a front edge of said inactive region of said rear end portion.
- 10. A method as claimed in claim 1 or 2 further comprising the steps of:
- forming on an upper surface of said piezo-electric plate an external conductive layer which extends to said front end face of said piezo-electric plate; and
- forming a conductive film on the front end faces of said piezo-electric plate an said front end plate which electrically connects said conductive material to said external conductive layer.
- 11. A method as claimed in claim 10 further comprising laminating a plurality of green sheets of ceramic to a predetermined thickness to form said front end plate, and sintering said green sheets.
- 12. A method as claimed in claim 11 further comprising burying conductive layers in said front end plate.
- 13. A method as claimed in claim 2, further comprising:
- laying first plate forming materials each defining said front end plate and said rear end plate as a single unit onto upper and lower surfaces of the inactive front and rear end portions of said plate in a longitudinal direction thereof;
- laying second plate forming materials each defining two side plates as a single unit onto said plate in a lateral direction thereof, said plate forming materials having a width which is approximately two times a width of one of said side plates;
- cutting said piezo-electric plate and said first plate forming materials longitudinally along lines which divide said first plate forming materials into said front end plate and said rear end plate; and
- cutting said piezo-electric plate and said second plate forming materials laterally along lines which substantially divide said second plate forming materials into said side plates.
- 14. A method as claimed in claim 1 or 2 further comprising laminating a plurality of green sheets of ceramic to a predetermined thickness to form said front end plate, and sintering said green sheets.
Priority Claims (3)
Number |
Date |
Country |
Kind |
5-276171 |
Oct 1993 |
JPX |
|
5-348532 |
Dec 1993 |
JPX |
|
6-190012 |
Jul 1994 |
JPX |
|
Parent Case Info
This is a divisional of application Ser. No. 08/319,584 filed Oct. 7, 1994.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4409601 |
Nilsson et al. |
Oct 1983 |
|
4438441 |
Bolmgren et al. |
Mar 1984 |
|
4566018 |
Nilsson |
Jan 1986 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
0085599 |
Aug 1983 |
EPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
319584 |
Oct 1994 |
|