Claims
- 1. A printer head bank comprising:
- a head assembly including a yoke, a magnet attached to said yoke, and a plurality of coils attached to said yoke; and
- means for accurately positioning said yoke, magnet and coils relative to each other comprising a head carriage being molded of resin and encapsulating said head assembly within said molded head carriage, said carriage having a plurality of typing hammers mounted directly thereto, each of said hammers being a leaf spring and being actuated by a corresponding one of said coils, the relative position of said yoke and said hammers being accurately determined by the formation of said molded head carriage.
- 2. A bank as in claim 1 further including screws for fixing said hammers to said head carriage, said hammers being positioned by said molded head carriage.
- 3. A bank as in claim 1 wherein said head assembly includes at least one circuit board.
- 4. A bank as in claim 1 wherein said head assembly includes a plurality of cables for connecting said coils directly to an external control circuit.
- 5. A method of manufacturing a printer head bank comprising:
- assembling by accurately positioning a head assembly including a yoke, a magnet attached to said yoke, and a plurality of coils attached to said yoke;
- molding a head carriage made of resin with said head assembly encapsulated therein;
- attaching a plurality of typing hammers directly to said carriage, each of said hammers being a leaf spring and being actuated by a corresponding one of said coils, the relative position of said yoke and said hammers being accurately determined by the formation of said molded head carriage.
- 6. A method as in claim 5 wherein said typing hammers are attached to the molded head carriage using screws.
- 7. A method as in claim 5 including the further step of connecting cables directly to said coils to couple said coils to an external control circuit.
Priority Claims (2)
Number |
Date |
Country |
Kind |
59-62841 |
Mar 1984 |
JPX |
|
59-134408 |
Jun 1984 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 718,381, filed 4/1/85, now abandoned.
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Date |
Kind |
4258623 |
Barrus et al. |
Mar 1981 |
|
4300845 |
Martin et al. |
Nov 1981 |
|
4350450 |
Durr et al. |
Sep 1982 |
|
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39651 |
Nov 1981 |
EPX |
2807337 |
Aug 1978 |
DEX |
148177 |
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JPX |
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Continuations (1)
|
Number |
Date |
Country |
Parent |
718381 |
Apr 1985 |
|