JPS5922325B2 - Hidoudenseibutsutsuno Dodenshiyorihohou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for making a non-conductive material conductive, and in particular, it can be used to uniformize a non-uniform coating caused by unreacted liquid remaining in the nickel spray method by spraying an inert gas. The present invention relates to a method for making a non-conductive substance conductive.

Conventionally, as a method for making a non-conductive material conductive, a method for making a non-conductive material conductive involves spraying a nickel solution and a reducing agent solution of a borohydride compound onto the surface of the non-conductive material to form a nickel metal layer. be.

This manufacturing method will now be described with reference to FIGS. 1 to 8 regarding a method for manufacturing a record master.

In the figure, reference numeral 1 is an aluminum plate made of aluminum. A lacquer layer 2 mainly made of cellulose nitrate is provided on this aluminum plate, and a sound groove is cut by a cutter on a lacquer plate 3 consisting of the aluminum plate 1 and the lacquer layer 2. 4 (see Figure 1), and in order to perform electroforming on this lacquer master plate 3, a nickel solution and a reducing liquid are sprayed to reduce and deposit nickel on the lacquer plate 3, thereby forming a conductive layer. 5 is formed, and a reinforcing layer 6 is further formed thereon by nickel electroforming (see Fig. 2), and then the reinforcing layer 6 is peeled off from the lacquer master 3 to form uneven grooves corresponding to the sound grooves 4 of the lacquer master 3. We get the master T with 4 (
(See Figure 3).

Next, after performing an oxide film treatment on the master T to form a peeling film, nickel electroforming 8 is performed (see FIG. 4) to produce a mother 9 (see FIG. 5). Thereafter, nickel electroforming 10 is applied to the mother 9 (FIG. 6), and this is peeled off to form a stub bar 11 (FIG. T). Next, this stand bar 11
A record disc 12 is manufactured by heat compression molding or injection molding using the following (FIG. 8). To obtain the master T described above, a nickel solution and a borohydride compound as a reducing agent are sprayed onto the lacquer master 3 using a spray method to form a nickel film, that is, a reinforcing layer 6. In some cases, reduction products, unreacted liquid, etc. remain in the recesses, and the supply of new liquid to the surface of the coating plate becomes insufficient, resulting in the disadvantage that it becomes difficult to obtain a uniform coating.

The main objective of the present invention is to avoid the above-mentioned disadvantages of the nickel spraying method, by spraying an inert gas from the same or a separate spray nozzle while nickel spraying.
It is an object of the present invention to provide a method for conductive treatment of a non-conductive substance, which is characterized by forming a nickel thin film while removing reduction products and unreacted liquid from the recesses. The advantage of the method according to the present invention is that inert gas is sprayed onto the reaction products and unreacted liquid remaining in the recesses, etc., and new liquid is sprayed while removing these, so the reaction rate is always kept constant. A uniform nickel thin film can be obtained.

Furthermore, since hydrogen gas and foreign matter generated in the recesses etc. can be removed, the occurrence of pinholes in the nickel coating can be prevented. Next, the present invention will be explained with reference to specific examples.

Example 1 Nickel chloride 509/11 ammonium chloride 50g/509/11 ammonium chloride was added as a nickel liquid onto a lacquer plate 3 in which sound grooves 4 were carved.
11, sodium borohydride 1g/11 as a reducing solution
4 g/l of sodium hydroxide was sprayed at a liquid temperature of 15°C to 35°C and a pH of 12, and 1 liter of nitrogen gas was added as an inert gas by another spray.
~21<g/d to form a conductive layer 5, and on this conductive layer 5, nickel sultamate 4009/11 boric acid 3
59/l in a plating solution with a liquid temperature of 40°C and a pH of 4.
Reinforcement layer 6 with a thickness of 0.31 m at a current of 5 to 30 A/d
was formed to obtain Master 7.

Example 2 Under the same conditions as Example 1, 1 to 2 kg/Cd of argon gas was sprayed as an inert gas, and a reinforcing layer 6 with a thickness of 0.311 was formed.
was formed to obtain Master 7.

With the master 7 according to the present invention obtained as described above,
A mother is obtained in the same way as in the normal record master production process, a stamper is obtained using this mother, and a record is produced by heat compression molding or injection molding, which reproduces the original sound extremely faithfully compared to records produced by conventional methods. I was able to get a record that I could do.

The reason for this is that when obtaining Master 7, nickel liquid and a borohydride compound, which is a reducing agent, are sprayed onto the lacquer master disk 3 to form a thin nickel film. Although some liquid remains, this is completely removed in order to form a nickel thin film by blowing it out of the groove with an inert gas, and since an inert gas is used for this, no remaining liquid is left behind. This is because there is no reaction with the reaction solution, the reaction rate is kept constant, and hydrogen gas and foreign matter generated in the grooves are completely removed, resulting in a pinhole-free nickel thin film.

[Brief explanation of the drawing]

1 to 8 are process diagrams showing the process of molding a record disc. In the figure, 1 is an aluminum disc, 2 is a lacquer layer, 3 is a lacquer master disc, 4 is a sound groove, 5 is a nickel thin film, 6 is a reinforcing layer, 7 is a master, 8 is a nickel layer, 9 is a mother, and 10 is a The nickel layer, 11 is the stamper, and 12 is the record.

Claims (1)

[Claims] 1 In a conductive treatment method in which a nickel liquid and a reducing agent liquid of a borohydride compound are sprayed onto a non-conductive substance to form a nickel metal layer, an inert gas is used when forming the nickel metal layer. A method for conductive treatment of non-conductive materials, characterized by forming a nickel metal layer while removing residual reaction materials by spraying.