1. An impedance matching interconnector for connecting the power output of an RF power supply to a laser tube housing of a slab laser system, the impedance matching interconnector comprising;
a co-axial conductor having an inner conductor connected to receive the power output of the RF power supply and a grounded outer conductor, the co-axial conductor having an impedance characteristic to match the output impedance of the RF power supply output;
a first L shaped network that includes a first inductor having a first end connected to the inner conductor of the co-axial conductor and a first capacitor structure having a first plate connected to a second end of the first inductor and a second plate connected to ground; and
a second L shaped network that includes a second inductor having a first end connected to the common connection between the second end of the first inductor and the first plate of the first capacitor structure and a second capacitor structure having a first plate connected to a second end of the second inductor and a second plate connected to ground, the common connection between the second end of the second inductor and the first plate of the second capacitor structure being connected to the laser tube housing of the slab laser system.
2. The impedance matching interconnector of claim 1, and wherein the first and second plates of the second capacitor structure have a dielectric disc disposed therebetween, the dielectric disc having a top side and a bottom side, the first plate having a first recess formed in a bottom side thereof, the second capacitor plate having a second recess formed in a top side thereof.
3. The impedance matching interconnector of claim 2, and wherein the first plate is rotatable with respect to the second plate.
4. In a CO2 slab laser system that includes an RF power supply box that provides an RF power supply output, an impedance matching network box that contains an impedance matching network for matching the output impedance of the RF power supply output to the input impedance of the laser discharge of the CO2 slab laser system, and a hermetically sealed CO2 laser tube housing box that contains the laser tube housing that contains the gas mixture, electrodes and optical resonator of the CO2 slab laser system, the impedance matching network comprising:
a co-axial conductor that extends through a grounded sidewall of the RF power supply box and an adjacent grounded sidewall of the impedance matching network box, the co-axial conductor having an inner conductor that extends into the RF power supply box and having a first end adapted to receive the RF power supply output and a second end that extends into the impedance matching network box, the co-axial conductor having an outer conductor that is electrically insulated from the inner conductor and connected to a grounded sidewall of the impedance matching network box, the inner conductor comprising a first inductor;
a first capacitor structure that includes a first conductive capacitor plate electrically coupled to a grounded sidewall of the impedance matching network box, a second conductive capacitor plate electrically connected to the inner conductor of the co-axial conductor, and a first dielectric disc disposed between the first and second capacitor plates of the first capacitor structure;
a second inductor connected between the first inductor and a second capacitor structure and electrically connected to a conductive feed-through structure that extends from the impedance matching network box into the laser tube housing box;
a second capacitor structure that includes a first conductive capacitor plate electrically connected to the second inductor, a second conductive capacitor plate electrically coupled to a grounded sidewall of the impedance matching network box, and a second dielectric disc disposed between the first and second capacitor plates of the second capacitor structure.
5. The impedance matching network of claim 4, and wherein the first capacitor plate of the second capacitor structure has a first recess formed in a bottom side thereof adjacent to a top side of the second dielectric disc, and wherein the second capacitor plate of the second capacitor structure has a second recess formed in a top side thereof adjacent to a bottom side of the second dielectric disc.
6. The impedance matching network of claim 5, and wherein the first capacitor plate is rotatable with respect to the second capacitor plate.
7. The impedance matching network of claim 4, and wherein the inner conductor of the co-axial conductor comprises:
a first cylindrical portion that extends at least partially into the RF power supply box and having a first end adapted to receive the RF power supply output, the first portion having a first diameter;
a second cylindrical intermediate portion connected to a second end of the first portion, the intermediate portion having a diameter that is less than the first diameter; and
a third portion connected to the intermediate portion and adapted to provide a common electrical connection among the first inductor, the second inductor and the first capacitor.
8. The impedance matching network of claim 7, and wherein the first end of the first cylindrical portion of the inner conductor is surrounded by a ceramic RF interconnector.
9. The impedance matching network of claim 7, and wherein the third portion of the inner conductor is water cooled.
10. The impedance matching network of claim 4, and wherein the second dielectric disc comprises Zirconium.
11. The impedance matching network of claim 10, and wherein the first dielectric disc comprises ceramic.
12. In a CO2 slab laser system that includes an RF power supply box provides an RF power supply output, an impedance matching network box that contains an impedance matching network for matching the output impedance of the RF power supply output to the input impedance of the laser discharge of the CO2 slab laser system, and a hermetically sealed CO2 laser tube housing box that contains the laser tube housing that contains the gas mixture, electrodes and optical resonator of the CO2 slab laser system, the impedance matching network comprising:
a co-axial conductor that extends through a grounded sidewall of the RF power supply box and an adjacent grounded sidewall of the impedance matching network box, the co-axial conductor having an inner conductor that extends into the RF power supply box and having a first end adapted to receive the RF power supply output and a second end that extends into the impedance matching network box, the co-axial conductor having an outer conductor that is electrically insulated from the inner conductor and connected to a ground sidewall of the impedance matching network box, the inner conductor comprising a first inductor;
a first capacitor structure that includes a first conductive capacitor plate electrically coupled to a grounded sidewall of the impedance matching network box, a second conductive capacitor plate electrically connected to the inner conductor of the co-axial conductor, and a dielectric disc disposed between the first and second capacitor plates of the first capacitor structure;
a second inductor connected between the first inductor and a second capacitor structure and electrically connected to a conductive feed-through structure that extends from the impedance matching network box into the laser tube housing box;
a second capacitor structure that includes first and second conductive capacitor plates electrically connected to the second inductor, a third conductive capacitor plate electrically coupled to a grounded sidewall of the impedance matching network box, a first dielectric disc disposed between the first and second capacitor plates of the second capacitor structure, and a second dielectric disc disposed between the second and third capacitor plates of the second capacitor structure.
13. The impedance matching network of claim 12, and wherein the first capacitor plate of the second capacitor structure has a first recess formed in a bottom side thereof adjacent to a top side of the second dielectric disc, and wherein the second capacitor plate has a second recess formed in a top side thereof adjacent to a bottom side of the second dielectric disc.
14. The impedance matching network of claim 13, and wherein the first capacitor plate of the second capacitor structure is rotatable with respect to the second capacitor plate of the second capacitor structure.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claims is:
1. A magnetic disk drive unit comprising:
a spindle motor mounting a magnetic disk;
a carriage mounting a magnetic head for recording and reproduction;
a park mechanism for placing said magnetic head retracted from said magnetic disk at stand-by state where recording and reproducing are not performed;
a single rigid frame mounting said spindle motor, said carriage and said park mechanism thereon for forming an assembly;
a casing housing and fixing said assembly, said casing being formed of an elastically deformable material.
2. A magnetic disk drive unit as set forth in claim 1, wherein said rigid frame is formed into flat, and said spindle motor, said carriage and said park mechanism are mounted on the common magnetic disk drive unit on the same plane of said rigid frame.
3. A magnetic disk drive unit as set forth in claim 2, wherein said rigid frame is formed from one piece metal plate with die cutting.
4. A magnetic disk drive unit as set forth in claim 3, wherein said rigid frame forms a part of a stator housing of said spindle motor, and thus said rigid frame is integral with said spindle motor.
5. A magnetic disk drive unit as set forth in claim 2 or 3, wherein said assembly is formed with said park mechanism is integrally formed with a part of said rigid frame for placing said magnetic head away from said magnetic disk in stand-by state while recording and reproduction is not performed, and whereby said rigid frame body is integral with said park mechanism.
6. A magnetic disk drive unit as set forth in any one of claims 1 to 4, wherein, for avoiding electronic parts from externally exposed, a circuit package for controlling said magnetic disk drive unit is housed within said casing.
7. A magnetic disk drive unit as set forth in claim 5, wherein, for avoiding electronic parts from externally exposed, a circuit package for controlling said magnetic disk drive unit is housed within said casing.
8. A magnetic disk drive unit as set forth in any one of claims 1 to 4, wherein one of said rigid frame and said casing is formed with a projection and the other is provided a recess or hole for accommodating said projection by elastic deformation of a part of said casing for securing said rigid frame within said casing.
9. A magnetic disk drive unit as set forth in claim 5, wherein one of said rigid frame and said casing is formed with a projection and the other is provided a recess or hole for accommodating said projection by elastic deformation of a part of said casing for securing said rigid frame within said casing.
10. A magnetic disk drive unit as set forth in any one of claims 1 to 4, wherein said casing is a molded resin body including a casing body arranged lower side of said assembly and a cover mating with said casing body for entirely covering said assembly, one of said casing body and said cover is provided with a projection and the other is provided with a recess or hole for establishing enclosing condition by engagement of said projection and recess or hole.
11. A magnetic disk drive unit as set forth in claim 5, wherein said casing is a molded resin body including a casing body arranged lower side of said assembly and a cover mating with said casing body for entirely covering said assembly, one of said casing body and said cover is provided with a projection and the other is provided with a recess or hole for establishing enclosing condition by engagement of said projection and recess or hole.
12. A magnetic disk drive unit as set forth in claim 10, wherein said casing is attached a thin conductive member for preventing accumulation of static electric charge.
13. A magnetic disk drive unit as set forth in claim 10, wherein a conductive film is formed on the surface of said casing for preventing accumulation of static electric charge.
14. A production process of a magnetic disk drive unit comprising the steps of;
forming a flat rigid frame by one of punching press, etching and wire cutting for one piece of plate member;
mounting a spindle motor mounting a magnetic disk, a carriage mounting a magnetic head for recording and reproduction, and a park mechanism for placing said magnetic head retracted from said magnetic disk at stand-by state where recording and reproducing are not performed for forming one set of assembly;
fixing said rigid frame and an elastically deformable casing for covering said rigid frame therewithin by engaging portions thereof; and
enclosing said assembly with in said casing.