JP2510770Y2 - Stamper-Electrolytic degreasing device for cleaning - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application This invention relates to an electrolytic degreasing device for stamper cleaning, and in particular, it can reduce scratches around the central through hole of the stamper and the front and back surfaces, thereby recording high quality information. TECHNICAL FIELD The present invention relates to an electrolytic degreasing device for cleaning stampers that enables duplication of a disk.

(B) Conventional technology An electrolytic degreasing device for stamper cleaning has the basic configuration
An electrolytic cell filled with an alkaline degreasing solution as an electrolytic solution, an electrode jig that can be inserted into the electrolytic solution and hold the information recording disk duplication stamper as a cleaning target in suspension in the electrolytic solution, and The counter electrode is inserted and a power supply for supplying electrolysis power between the counter electrode and the electrode jig. The electrode jig is, for example, as shown in FIGS. 11 to 12, a rod-shaped metal electrode rod 2a that is inserted substantially vertically into the electrolytic solution, and receives electric power for electrolysis from the upper portion, and a lower portion of this electrode rod. A metal connecting shaft part that is screwed (screw part 11a) and extends horizontally toward the counter electrode (not shown) with the same diameter.
10a and its shaft head 9a.

Thus, the stamper S has its central through hole H in the shaft head 9a.
And then the peripheral edge of the central through hole H is hooked on the connecting shaft portion 10a to be held, and a polarity (-) is given through the electrode rod 2a and the electrode shaft portion 10a. Thus, electric power for electrolysis is supplied to both electrodes by a power source (not shown), and the photosensitive resin film of the stamper S is removed by electrolytic degreasing.

(C) Problem to be solved by the invention In FIG. 12, the stamper hooking connecting shaft portion 10a is substantially horizontal and has the same diameter. Therefore, the stamper S may make contact with the connecting shaft portion 10a on the inner peripheral surface of the central through hole H at least more than line contact, and may damage the inner peripheral surface of the central through hole H.

Since the center through hole is a hole that determines the center of rotation in the information recording disk, the center of rotation changes due to scratches, which may lead to insufficient reproduction of information. Further, since electric power for electrolysis is supplied to the back surface of the stamper through the electrode rod 2a, a burnout portion may occur depending on the contact state, and uneven cleaning may occur if the contact is too strong. Also, the stamper is washing by energizing the stamper itself, but in a moment, a large current, for example, 10A
When the above is flowed, the contact portion between the electrode jig and the stamper may be burnt.

(D) Means for Solving the Problem and Its Action This invention is to electrolyze an electrolytic cell filled with an alkaline degreasing solution as an electrolytic solution and an information recording disk duplication stamper to be cleaned, which is inserted into the electrolytic solution. The electrode jig includes an electrode jig that can be suspended and held in a liquid, a counter electrode that is inserted in an electrolytic solution, and a power supply that supplies electrolysis power between the counter electrode and the electrode jig. A) consists of a hanging rod-shaped grip portion and a pair of arm portions that branch from the lower end of this grip portion and hang down. Both of these portions are held in the electrolytic solution of the electrolytic cell in an externally inserted state,
And a metal electrode rod that receives power for electrolysis from the outside, and b) fixed to the pair of arms of the electrode rod so as to face each other in the electrolytic solution, and the stamper at two locations on the outer peripheral edge thereof. An electrolytic degreasing device for cleaning a stamper, comprising: a pair of support members that are placed and supported by the device and held substantially vertically in the electrolytic solution, and that further transmit the electrolysis power supplied from the electrode rod to the stamper.

In other words, this invention avoids contact between the central through hole of the stamper and the front and back surfaces by supporting only the outer peripheral edge of the stamper, not the central through hole of the stamper, thereby damaging the inner peripheral surface of the central through hole of the stamper. It is intended to make it possible to duplicate high quality information recording discs by preventing scratches and uneven cleaning on the front and back surfaces of the stamper, especially on the back surface. Further, since the electrode jig can be configured by a rod-shaped body having a substantially inverted Y shape, the structure is extremely simple and the surroundings can be opened, so that the stamper can be easily attached and detached, and the stamper is not damaged or soiled. To reduce the occurrence of the above and facilitate the transfer to the next step. Also, even if the electrode jig is formed of a substantially U-shaped rod-like body, the structure is simple and the stamper can be easily attached and detached.

The electrolysis power is supplied by the low current start method (from 0
It takes 0.5 to 2 seconds to reach 10 A), so that the contact portion between the electrode jig and the stamper can be prevented from burning.

(E) Embodiment This invention will be described in detail based on an embodiment shown in the drawings.
The invention is not limited to this.

First, referring to FIG. 10, an electrolytic degreasing apparatus 1 for stamper cleaning includes an electrolytic bath 5 filled with an alkaline degreasing solution 4 as an electrolytic solution, an electrolytic jig 6 and a counter electrode 7 inserted in the electrolytic solution, and an electrode repairer for these electrodes. It mainly comprises a DC power supply (not shown) for supplying electrolysis power between the tool and the counter electrode. In addition, 8 is a heater for warming the electrolytic solution, and K is a stirrer for the electrolytic solution.

The electrode jig 6 is an electrode rod, particularly in FIGS.
25 and a pair of support members 13 and 14 fixed to the electrode rod. The electrode rod 25 is a hanging bar-shaped handle portion.
It is composed of 12 and arm portions 15 and 16 which branch off from the lower end and hang down. The support members 13 and 14 are integrally fixed to the lower ends of the arm portions 15 and 16, respectively. Therefore, the support member 14 is particularly the fourth
In the figure, an arc-shaped groove corresponding to the outer peripheral edge of the stamper S
Equipped with 17 (groove that bends smoothly in the depth direction of this groove),
The cross section is substantially V-shaped as shown in FIG.
On the other hand, the support member 13 is separated from the support member 14 by an interval smaller than the outer diameter of the stamper S described later (for example, B =
300mm), and the grooves are arranged at the same height, facing each other. The height of the support member 13 is the same as that of the support member 14.
For example, in FIG. 2, C = 80 mm.

Now, when the stamper S (outer diameter 138 mmφ, inner diameter 37.4 mmφ, made of nickel) is hooked on the electrode jig 6 and suspended almost vertically in the electrolytic solution, the stamper S is first shown in FIG.
Are retained in the respective grooves of the support members 13 and 14. Here, the stamper does not contact the central through hole H or the front and back surfaces but only the outer peripheral edges, and by this contact, electric power for electrolysis is supplied to the stamper S through the electrode rod 25. Thus, it is possible to prevent the inner peripheral surface of the central through hole of the stamper and the front and back surfaces from being scratched and uneven cleaning. It should be noted that even if the outer peripheral edge of the stamper S and the supporting members 13 and 14 are not in good contact with each other and are scratched, they do not directly relate to the rotation of the copied disk or the information recording range. Information records can be maintained in high quality.

Since the electrode jig 6 can be covered with an insulating material 18 (for example, Teflon resin) except for the current-carrying portion, it is possible to reduce the carry-out of the electrolytic degreasing liquid, and the base material is not expensive nickel but stainless steel, copper or the like. Materials can be used. The electrode jig shown in FIGS. 1 to 5 is convenient because it can be used as a hanging jig not only for electrolytic cleaning but also for subsequent washing and drying.

Unlike the above embodiment, the sectional structure of the supporting member may be configured as shown in FIGS. 6 and 7. That is, in FIG. 6, the support member 14b may be configured to dig a V-shaped groove 17b and a groove 19b having a thickness of the stamper from the bottom of the groove 17b so that the stamper is engaged and supported there. . Further, the support member 14 of FIG. 7 is provided with protrusions 20c and 21c facing the side wall in the middle with grooves 19c having the same width instead of the V-shaped cross section, and the contact portions are reduced by the protrusions to position the stamper. are doing.

Furthermore, unlike the embodiment shown in FIGS. 1 to 7,
As shown in FIG. 8 to FIG. 9, two vertical hanging pieces 23d and 24d of the electrode rod and a horizontal holding rod 22d which connects the lower ends thereof and which holds the supporting members 13d and 14d at both ends thereof are provided. You may comprise. Here, the structures and positions of the support members 13d and 14d are almost the same as in the case of FIGS. In FIGS. 8 to 9, D: 80 mm, F: 340 mm, G: 330 mm.

(F) Effect of the device According to this device, by supporting only the outer peripheral edge of the stamper instead of the center hole of the stamper, contact between the center hole of the stamper and contact between the front and back surfaces is avoided, whereby the center hole of the stamper is prevented. Prevents scratches on the inner peripheral surface, scratches on the front and back surfaces of the stamper, especially on the back surface, and uneven cleaning, enabling the duplication of high-quality information recording disks.

[Brief description of drawings]

FIG. 1 is a perspective view showing the construction of an essential part of an electrolytic degreasing device for cleaning a stamper according to the present invention, FIG. 2 is an enlarged front view of the essential part, and FIG. 3 is an AA 'section in FIG. Sectional view, 4th
The figure is a perspective view of an essential part, FIG. 5 is a sectional view of a supporting member, and FIGS.
FIG. 7 is a view equivalent to FIG. 5 showing another embodiment, FIG. 8 is a perspective view for explaining the configuration showing another embodiment, and FIG. 9 is an E- of FIG.
E'cross section, FIG. 10 is a schematic explanatory view of the overall construction of the embodiment shown in FIGS. 1 to 5, FIG. 11 is a view equivalent to FIG. 1 of the conventional example, and FIG. 12 is an enlarged cross section of the Ca portion of FIG. It is a figure. 1 ... Electrolytic degreasing device for stamper cleaning, 2 ... Electrode rod,
4 ... Alkaline degreasing solution, 5 ... Electrode tank, 6 ... Electrode rod,
7 …… Counter electrode, 13 ・ 14 …… Supporting member,

Claims (2)

(57) [Scope of utility model registration request] 1. An electrolytic cell filled with an alkaline degreasing solution as an electrolytic solution, and an electrode jig which is inserted into the electrolytic solution and which can suspend and hold an information recording disk duplicating stamper to be cleaned in the electrolytic solution. The electrode jig is equipped with a counter electrode inserted in an electrolytic solution and a power supply for supplying electrolysis power between the counter electrode and the electrode jig. It consists of a pair of arms that branch from the lower end of the handle part and hang down, and these two parts are held in the electrolytic solution from the outside in the electrolytic cell,
And a metal electrode rod that receives power for electrolysis from the outside, and b) fixed to the pair of arms of the electrode rod so as to face each other in the electrolytic solution, and the stamper at two locations on the outer peripheral edge thereof. An electrolytic degreasing device for cleaning a stamper, which comprises a pair of support members that are placed and supported by the device to be held in the electrolytic solution substantially vertically, and that further transmit the electrolysis power supplied from the electrode rod to the stamper. 2. An electrolytic cell filled with an alkaline degreasing solution as an electrolytic solution, and an electrode jig which is inserted into the electrolytic solution and can hold an information recording disk duplicating stamper to be cleaned in the electrolytic solution in a suspended manner. A counter electrode inserted into the electrolytic solution and a power supply for supplying electrolysis power between the counter electrode and the electrode jig are provided. The electrode jig is a) a pair of hanging rod-shaped suspensions. Strips and horizontal holding rods that connect the lower ends of these hanging strips, and these hanging strips and horizontal holding rods are held in the electrolytic cell from the outside in a state of being inserted into the electrolytic solution, and the electrodes for electrolysis from the outside. And (b) the horizontal holding rods of this electrode rod are fixed to both ends of the horizontal holding rod so as to face each other in the electrolytic solution, and the stamper is placed and supported at two places on the outer peripheral edge of the electrode rod for electrolysis. Hold it almost vertically in the liquid, and A pair of support members and the stamper cleaning electrolytic degreasing apparatus comprising a transmitting a electrolytic power et supplied to the stamper.