JPH04102886A - Jig for hologram duplication and manufacture of duplicated hologram - Google Patents

Abstract

PURPOSE:To directly fix respective transparent disk substrates where holograms are duplicated by fixing a stamper to a reference base, provided with a motor fitting hoe whose center is coaxial with the center of a motor rotary shaft, so that the stamper center is aligned with the center of the motor fitting hole. CONSTITUTION:The stamper 2 is connected and fixed by a fixation part 32 so that its center is aligned coaxially with the center of the motor fitting hole 30. Then when a motor is fitted in the motor fitting hole 30, the motor rotary shaft is aligned with the center of the stamper 2 coaxially and automatically. Then photosetting adhesive resin 6 which is applied on a transparent disk substrate 5 is put on the surface of the stamper 2 and pressed, and then irradiat ed with ultraviolet rays to form a hologram 60. Consequently, the duplicated hologram to which the motor 4 is connected and fixed is obtained, so the connecting and fixing operation is one immediately without positioning and fitting the motor 4.

Description

[Detailed Description of the Invention] [Summary] Regarding a hologram duplication jig and a method for manufacturing a duplicate hologram, the present invention improves the accuracy of position adjustment between a hologram and a motor when manufacturing a duplicate hologram, and makes the adjustment process simple and easy. The center of the motor rotation axis (ON
) A hologram duplication jig configured to fix a stamper so that the stamper center (0, ) coincides with the center of the motor fitting hole is placed on a reference stand provided with a motor fitting hole having a coaxial center with the motor fitting hole. A motor is fitted into the motor fitting hole of the hologram duplication jig, a transparent disk substrate coated with a photocurable adhesive resin is pressed against the stamper, and then light is irradiated to form the photocurable adhesive. The method for manufacturing a duplicate hologram is configured such that after the transparent resin is cured and the motor rotation shaft and the transparent disk substrate are connected and fixed, the transparent disk substrate is peeled off from the stamper together with the motor.

[Industrial application field]

The present invention relates to a hologram, and particularly to a jig for replicating a relief hologram for a light beam scanning device used in a laser beam application device such as a laser printer, and a method for manufacturing a replica hologram.

[Conventional technology]

Figure 5 shows a hologram disc optical beam scanning device.

For example, it schematically shows the optical system of a hologram scanner.

Now, the laser beam emitted from the semiconductor laser 100 is converged by the hologram lens 101, and enters the disk-shaped bologram 60 rotating around the center OH.
It is configured to scan over the illustrated photosensitive drum 102. 4 in the figure is a motor, and the transparent disk substrate 5 is rotated so that its rotation axis is coaxial with the center ON of the hologram.
The connection has been fixed.

FIG. 4 is a diagram showing an example of a conventional method for manufacturing a duplicate hologram, and will be briefly explained below in the order of the main steps.

Step [1]: Transparent disk substrate5. For example, a glass disk or a polycarbonate disk may be coated with a photocurable adhesive resin 6. For example, a photopolymer is applied to varying thicknesses using, for example, a spin-coating method.

Step (2): Gently stack the treated substrates so that the photocurable adhesive resin 6 contacts the stamper 2.

Step (3): Pressure (P, ) is applied from above the superimposed transparent disk substrates 5 in a negative direction.

Step (4): The superimposed transparent disk substrates 5 are irradiated with light, for example, ultraviolet (UV) light, to harden the photocurable adhesive resin 6.

Step (5) Transparent disk substrate 5 subjected to the above-mentioned light irradiation treatment
The hologram 60 is formed by applying force (P2) from below, for example, through a hole made in the center of the stamper 6 to peel it off.

Step (6): Adjust the motor rotation shaft 4 so that the center of the motor rotation shaft 40 coincides with the center of the hologram 60 formed above.
A transparent disk substrate 5 is temporarily connected to the upper end surface of 0.

For example, it is temporarily fixed with ultraviolet curing resin.

Step (7): The temporary fixing portion was irradiated with ultraviolet (tlV) light to securely connect and fix the two through the connection layer 45, thereby manufacturing a hologram disk with a motor.

FIG. 6 is a diagram showing an example of the conventional positioning and fixing of the hologram disk substrate and the motor rotation shaft. (6)
The position adjustment and connection fixing methods in (7) and (7) are shown in an easy-to-understand manner. In the figure, reference numeral 300 denotes a reference base, and a motor fitting hole 30' having a center coaxial with the motor rotating shaft 40 is provided. First, the motor 4 is fitted and fixed in the motor fitting hole 30' as shown in the figure, and the transparent disk substrate 5 on which the hologram 60 is copied is placed on the motor rotation shaft 40 with, for example, an ultraviolet curing resin sandwiched therebetween. do. Since the ultraviolet curing resin has viscosity, the two become temporarily fixed.

In this state, a plurality of markers 61. which can be identified by the difference in the light reflectance of the hologram 60 are intentionally provided in a centrally symmetrical manner at or near the corners of the hologram pattern. For example, the microscope 7 is adjusted so that four small points can be observed. Next, while rotating the motor 4 gently and observing the locus of the marker 61, the position of the transparent disk substrate 5 is manually adjusted so that it forms a single line, and when the line becomes a single line, the ultraviolet curing resin is applied. , this is cured by irradiation with ultraviolet rays (not shown), and the connection layer 45 securely connects and fixes the two, thereby adjusting the position and fixing the connection between the hologram 60 and the motor rotation shaft 40.

61 [Problem to be Solved by the Invention] However, in the above-mentioned conventional method for manufacturing a duplicate hologram, the bologram 60 is peeled off from the stamper 2 and the hologram 60 is separated from the stamper 2.
The adjustment of the position of the motor 4 and the connection and fixation of the motor 4 were performed separately, that is, in a two-step process. Therefore, the position of each transparent disk substrate 5 on which the hologram 60 is copied is adjusted to the motor 4.

Since the connection is fixed, the position adjustment process is extremely complicated and takes a long time, and there is a problem in that the positioning error and its dispersion become large, and it was necessary to solve these problems.

[Means to solve the problem]

The above problem is solved by using a reference stand 3 provided with a motor fitting hole 30 having a coaxial center with the center (0S) of the motor rotation shaft 40, so that the standber center (0S) coincides with the center of the motor fitting hole 30. A hologram duplication jig configured to fix the stamper 2 is provided, a motor 4 is fitted into the motor fitting hole 30 of the hologram duplication jig, and a transparent disk coated with a photocurable adhesive resin 6 is provided. The substrate 5 is placed in the stamper 2.
The photocurable adhesive resin 6 is pressed and then irradiated with light.
The problem is solved by configuring the method for manufacturing a duplicate hologram so that after the motor rotation shaft 40 and the transparent disk substrate 5 are connected and fixed, the transparent disk substrate 5 is peeled off from the stamper 2 together with the motor 4. can do. The connection and fixation between the motor rotation shaft 40 and the transparent disk substrate 5 can be achieved by using an adhesive or mechanically. Further, the motor 4 may be connected and fixed not only on the same side as the hologram 60 forming surface but also on the opposite side.

[Function] According to the present invention, the reference stand 3 provided with the motor fitting hole 30 having the center coaxial with the center (0S) of the motor rotation shaft 40,
Since a duplicate hologram is manufactured using a hologram duplication jig configured to fix the stamper 2 so that the stamper center (0S) coincides with the center of the motor fitting hole 30, each of the duplicated holograms 60 is There is no need to adjust the position of the transparent disk substrate 5 and attach it to the motor 4, and you can just connect and fix it immediately, which not only reduces work time but also improves positional accuracy and reduces variations. It becomes.

〔Example〕

FIG. 1 is a diagram showing an embodiment of the present invention, in which FIG. 1A is a side sectional view and FIG. 1B is a top view.

In the figure, reference numeral 3 denotes a reference table having an upper edge on which the stamper 2 is placed and fixed, and a motor fitting hole 30 in which a motor is fitted at the bottom. On the periphery of the stamper 2, a plurality of markers 20, for example, four small dots, are provided centrally symmetrically as shown.

The stamper 2 is connected and fixed by a fixing portion 32 such that its center (0S) coaxially coincides with the center of the motor fitting hole 30. Therefore, when a motor (not shown) is fitted into the motor fitting hole 30, the motor rotation axis and the center (0S) of the stamper 2 are automatically and coaxially aligned. .

Note that the same reference numerals are given to the same parts as those explained in the above aspects, and the explanation of the same parts will be omitted.

As a specific method for fixing the stamper 2 to the reference stand 3 in this way, for example, the method for positioning and fixing the hologram disk substrate and the motor rotation shaft shown in FIG. 6 may be used. That is, a predetermined motor is fitted into the motor fitting hole 30 of the reference stand 3, and the stamper before making a hole in the center is placed in place of the transparent disk substrate 5 shown in FIG. 6, temporarily fixed, and rotated. , WgM was adjusted and applied to the fixing part 32 in advance so that the locus of the marker 20 became a single line while observing with a microscope. For example, the stamper 2 and the reference stand 3 are connected and fixed by irradiating the ultraviolet curing resin with ultraviolet rays.

At this time, the ultraviolet curing resin between the motor rotating shaft and the stamper 2 will not be bonded unless ultraviolet rays are irradiated. After that, a hole is made in the center of the stamper 2 through which the motor can be taken out, and the motor is taken out upward from there, thereby producing the hologram duplication jig 1a of the present invention.

Although the marker 20 is specially provided in the above embodiment, a part of the stamper 2 itself, for example, a symmetrical corner around the stamper 2 may also be used.

Further, in the above embodiment, the reference stand 3 and the stamper 2 are aligned and fixed by the fixing part 32, but the X, Y,
A configuration may also be adopted in which a Z three-axis alignment mechanism is provided to adjust the positions of the stamper 2 and the motor. In this case, the jig mechanism becomes somewhat complicated, but it has the advantage that one jig can be used with various stampers.

FIG. 2 is a diagram showing an example method of the present invention, which will be briefly explained below in the order of the main steps.

Step [1] Second, a hologram duplication jig 1 and a predetermined motor 4 according to the present invention are prepared.

Step (2) Fit the motor 4 into the motor fitting hole 30 of the hologram duplication jig 1. At this time, the upper end surface of the motor rotating wheel 40 and the surface of the stamper 2 should be aligned, and at least should not protrude beyond the surface of the stamper 2.

Step (3): Stamper 2 of the hologram duplication jig 1
A transparent disk substrate 5. For example, a photocurable adhesive resin 6. is coated onto a glass disc or a polycarbonate disc to various thicknesses using a spin cord method.
For example, photopolymers are gently pressed together with pressure similar to stacking.

Step (4) 2. Light, for example, ultraviolet (UV) light, is irradiated from above the pressed transparent disk substrate 5 to harden the photocurable adhesive resin 6. At this time, the motor rotation shaft 4
The photocurable adhesive resin 6 on the upper end surface of the stamper 2 is also irradiated with ultraviolet rays to connect and fix the stamper 2 and the motor rotation shaft 40.

Step (5): Force (P2) is applied from below the motor fitting hole 30 of the reference stand 3 to the fitting part at the bottom of the motor 4 to push up the motor 4, and the transparent disk substrate 5 which has been subjected to the light irradiation process is removed from the stamper 2. is peeled off to form a hologram 60.

Step (6): When the entire motor 4, which is connected and fixed to the transparent disk substrate 5 on which the hologram 60 is formed, is taken out from the hole made in the center of the stamper 2, the motor 4 of the present invention is connected and fixed. A duplicate hologram is created.

According to the present invention, it is extremely easy to manufacture a duplicate hologram, the manufacturing time is reduced to about half, and the alignment accuracy and error variation are greatly improved.

In the above embodiment, the same photocurable adhesive resin 6 that forms the hologram 60 was used to connect and fix the transparent disk substrate 5 and the motor rotation shaft, but the present invention is not limited to this, and other adhesives may be used. Furthermore, the connection and fixation may be performed not only by adhesive but also mechanically, for example, by using screws or the like.

FIG. 3 is a diagram showing another embodiment of the present invention.

In this embodiment, the reference base portion includes, for example, an upper block 3a for fixing the stamper 2, a pedestal block 3b having a motor fitting hole 30, and a plurality of pillars connecting the two and loosely fitting into the upper block 3a and fixed to the pedestal block 3b. 3c, and a nut 3d for adjusting the height of the upper block 3a.

The basic steps for manufacturing a duplicate hologram are the same as those for using the bologram duplication jig 1a shown in FIG. The difference is that the motor rotation shaft 40 can be connected and fixed to the transparent disk substrate surface on the opposite side.

In this case, when the hologram 60 is peeled off from the stamper 2, the configuration is such that force P2 is applied from above the transparent disk substrate 5 (not shown), so no force is applied to the motor rotation shaft 40, and the peeling is prevented. Even if the required force becomes large, there is no risk of deterioration of bearing accuracy.

The embodiments described above are merely examples, and as long as they comply with the spirit of the present invention, the parts and materials used, as well as the configuration and process, etc., are preferable as appropriate.

Alternatively, it goes without saying that a combination thereof may be used.

〔Effect of the invention〕

As explained above, according to the present invention, the motor rotation shaft 40
A motor fitting hole 30 having a coaxial center with the center (ON) of
Since a duplicate hologram is manufactured using a hologram duplication jig configured by fixing the stamper 2 to a reference stand 3 provided with a stamper so that the stamper center (OS) coincides with the center of the motor fitting hole 30, There is no need to adjust the position of each transparent disk substrate 5 on which the hologram 60 has been copied and attach it to the motor 4, and the connection and fixing work can be performed immediately. This greatly contributes to lower prices by improving quality and shortening work time.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an embodiment method of the present invention, FIG. 3 is a diagram showing another embodiment of the present invention, and FIG. 4 is a diagram showing a conventional replica hologram. FIG. 5 is a diagram showing a hologram disk optical beam scanning device. FIG. 6 is a diagram showing an example of positioning and fixing of a conventional hologram disk substrate and a motor rotation shaft. In the figure, 1 (Ia, lb) is a hologram duplication jig, 2 is a stamper, 3 is a reference stand, 4 is a motor, 5 is a transparent disk substrate, 6 is a photocurable adhesive resin, 20 is a marker, 30 is A motor fitting hole, 40 is a motor rotating shaft, and 60 is a bologram. nun

Claims (1)

[Claims] [1] Reference stand (3) provided with a motor fitting hole (30) having a center coaxial with the center (0_M) of the motor rotation shaft (40)
, the center of the stamper (0_S) is aligned with the motor fitting hole (30
) A hologram duplication jig characterized in that a stamper (2) is fixed so as to coincide with the center of the hologram. [2] The motor (4) is fitted into the motor fitting hole (30) of the hologram duplication jig according to claim [1], and the transparent disk substrate (5) is coated with a photocurable adhesive resin (6). ) is pressed against the stamper (2) and then irradiated with light to harden the photocurable adhesive resin (6), and the motor rotation shaft (4
0) and the transparent disk substrate (5) are connected and fixed, and then the transparent disk substrate (5) is peeled off from the stamper (2) together with the motor (4). [3] The motor rotation shaft (40) and the transparent disk substrate (
2. The method for manufacturing a replicated hologram according to claim 2, wherein the connection and fixation in step 5) is performed using an adhesive. [4] The motor rotation shaft (40) and the transparent disk substrate (
The method for manufacturing a duplicate hologram according to claim 2, wherein the connection and fixation in step 5) is performed mechanically. [5] Claims [2] to 20 above, characterized in that the motor (4) is connected and fixed to a side opposite to the hologram (60) forming surface.
[4] The method for manufacturing a replicated hologram as described in [4].