JPS62280392A - Electroforming electrode - Google Patents

Abstract

PURPOSE:To simplify stages and to prevent the occurrence of defects by enabling the removal of an electrode with a cylindrical contact maker having a larger thickness than an electroformed plate, an elastic insulator brought into contact with the cylindrical outside of the contact maker and a presser. CONSTITUTION:This electroforming electrode is composed of a cylindrical contact maker 1, a ring-shaped elastic insulator 4 brought into contact with the cylindrical outside of the contact maker 1, e.g., an O ring and a presser 3. The contact maker 1 is thicker than an electroformed plate 8 and has electric conductivity. The presser 3 brings the insulator 4 into contact with a surface to be electroformed and also brings the contact maker 1 into contact with the surface to be electroformed to electrically connect the cathode 7 to the surface to be electroformed.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an electroforming electrode, and particularly to an electroforming electrode for manufacturing an original disk mold.

[Conventional technology]

Conventional electroformed electrodes are generally shown in the cross-sectional view in Figure 2.
It is composed of a thin ring-shaped contact 1' and a fixing screw 2 whose anode-facing surface and side surfaces are covered with an insulator 2', and is a conductive film deposited on a glass substrate 5 in which, for example, grooves and bits are formed. 6 by pressing the contact 1 with the fixing screw 2 to electrically connect the cathode 7 and the conductive membrane 6, and! The electroformed plate 8 was formed by casting.

[Problems that the invention attempts to resolve]

In the conventional electroformed electrode described above, an electroformed film is also formed on the top and side surfaces of the ring-shaped contact 1, and as the electroforming process progresses, the contact 1 forms an electroformed plate integrated with the electroformed film. is formed.

The electroformed plate formed by electroforming is used as a matrix for transferring grooves and pinotola to resin by molding, but in order to do so, the back side of the electroformed plate (the side where grooves and bits are not formed) must be polished. Because it tends to need to be flattened. However, since the contact 1 is fixed on the back surface in a convex shape, it is necessary to remove this convex portion by punching or cutting prior to polishing.

When removed by punching or the like, there is a drawback in that defects may occur on the surface of the electroformed plate due to scratches or adhesion of foreign matter.

[Means for solving problems]

The electroformed electrode of the present invention includes a conductive cylindrical contact having a height greater than the thickness of a plate formed by electroforming, a ring-shaped elastic insulator circumscribing the side surface of the contact, and the elastic insulator. The device includes a presser which presses an object onto the surface to be electroformed and at the same time brings the contactor into contact with the surface to be electroformed to electrically connect the cathode, the object, and the 11n surface.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the electroformed pole of the present invention is composed of a metal cylindrical contact 1, an O-ring 4 circumscribing the contact, and a metal presser 3.

By pressing the OIJ ring 4 against the conductive film 6 with the presser 3 and simultaneously bringing the contactor 1 into contact with the conductive film 6, the cathode 7
and conductive film 6 are electrically connected and electroforming is performed. Conductive film 6
Since the electroformed plate 8 formed on the top is not connected to the contact 1 and the presser 3, if the presser 3 is removed after electroforming, the contact 1 and the OIJ ring 4 will be connected to the electroformed plate 8. Remove the ratchet 9.

Therefore, no convex portion is formed on the back surface of the electroformed plate 8.

Note that in the embodiment of the present invention, the anode-facing surface and side surfaces of the suppressor 3 are not covered with an insulator, so an electroformed film grows on the surface of the presser, but as described above, it is not connected to the electroformed plate. Therefore, there is no problem. Of course, it is also possible to use a presser covered with an insulator.

It is also obvious that rubber or the like having a rectangular cross section can be used as the insulator that circumscribes the contactor 1.

〔Effect of the invention〕

The electroformed electrode of the present invention uses a cylindrical contact whose height is as large as the thickness of the plate formed by electroforming, an elastic insulator that circumscribes it, and a presser. It becomes possible to remove it.

Therefore, there is no need to remove the electrode portion for polishing, which not only simplifies the process but also prevents defects.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional example.

Claims (1)

[Claims] A conductive cylindrical contact having a height greater than the thickness of the plate formed by electroforming, a ring-shaped elastic insulator circumscribing the side surface of the contact, and pressing the elastic insulator against the surface to be electroformed. An electroforming electrode characterized in that it includes a presser which simultaneously brings the contactor into contact with the surface to be electroformed and electrically connects the cathode and the surface to be electroformed.