JPH0577259A - Resin layer duplicating method - Google Patents

Abstract

PURPOSE:To provide a resin layer duplicating method in which a liquid resin material is dropped inside a frame member having the base outside dimension as its inside dimension and no uncured resin material is left on a stamper when being released from the stamper after being cured. CONSTITUTION:A predetermined quantity of a liquid resin material 14 provided with curability is dropped on a stamper 13 forming a predetermined shape, and a base 15 is placed on the resin material 14. Then the resin material 14 is diffused on the stamper 13, and the resin material 14 is cured in the resin layer duplicating method. A frame member 17 having an inside diameter equal to the outside diameter of the base 15 at a predetermined height and its inner face at least composed of the resin material 14 and a material of good release properties is provided, and the frame member 17 is placed on the stamper 13, and the resin material 14 is dropped inside the frame member 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of replicating a resin layer such as a hologram disk used in an electrophotographic printer or a reader, and in particular, a curable liquid resin material having an outer diameter dimension of a substrate as an inner diameter. The present invention relates to a resin layer duplication method in which the resin layer is dropped inside the frame member.

Recently, an exposure scanning device of an electrophotographic printing device incorporated in a laser printer, a copying machine, a facsimile device, or the like, or a point of sales information management (Point Of Sales: P).
Bar code scanners that are used as OS) terminals are widely used.

In such an apparatus, for example, a hologram is used in an optical system for forming light from a laser light source into a scanning beam. This hologram is produced by processing an original plate by a two-beam interference exposure method. If there is fluctuation in the coherent light, it is difficult to obtain a highly efficient one. Therefore, in order to accurately and inexpensively produce a large amount of holograms, it is essential to duplicate the master hologram.

[0004]

2. Description of the Related Art FIG. 3 illustrates an internal side view of an electrophotographic printing apparatus. In the figure, 1 is a cassette mounting portion, 2 is a cassette, 3 is a delivery roller, 4 is a conveying path, 5 is a printer section, and 6 is a stacker.

The printer section 5 includes an optical unit 50, a photosensitive drum 51, a cleaner 52, a charging section 53, a developing section 54, a transfer section 55,
It is composed of a charge removing unit 56 and a fixing unit 57. A cassette 2 is set in the cassette mounting portion 1, and printing paper (hereinafter referred to as paper) 20 of a desired size is accumulated and stored in the cassette 2.

With such a configuration, when the power of the apparatus is turned on, the fixing unit 57 is heated to a predetermined temperature to be in a printable state, and the paper 20 is fed from the cassette 2 in the direction of arrow A based on the print instruction signal and conveyed. The photosensitive drum 51 is conveyed along the path 4.
Send below.

By this time, the charge on the photosensitive drum 51 has been removed by the charge removing section 56, the residual toner has been cleaned by the cleaner 52, and the charging section 53 has been charged again. Optical data generated by the laser beam emitted from the optical unit 50 is scanned and exposed on the photosensitive drum 51, and the electrostatic image formed on the photosensitive drum 51 is developed into a toner image by the developing unit 54, and the paper is transferred by the transfer unit 55. After being transferred to the sheet 20, the fixing section 57 heats and pressurizes the sheet to fix it, and the sheet 20 is sent to the stacker 6.

Next, referring to the perspective view of FIG.
The configuration and the outline of the exposure process will be described. As shown in the figure, the optical unit 50 includes, for example, a light source 7 composed of a semiconductor laser (laser diode), a hologram lens 8 for diffracting and condensing a laser beam emitted from the light source 7 in a predetermined direction, and a motor M. It is composed of a hologram disk 9 which rotates at a high speed and diffracts the laser beam from the hologram lens 8 to form a scanning beam.

Therefore, the beam emitted from the light source 7 passes through the hologram lens 8 and is formed into a scanning beam by the rotating hologram disk 9 to expose the photosensitive drum 51. The hologram disk 9 is made by adhering a resin film having fine irregularities to a glass or resin substrate, for example, and has a function of diffracting incident light in a predetermined direction and transmitting (or reflecting) it.

The present invention relates to a method of copying the original plate of the hologram disk 9, and the steps of the conventional method of making will be described in detail below with reference to FIG. As shown in FIGS. 5A to 5F, (a) a resist pattern 11 is formed on the substrate 10 by the holographic exposure method.

(B) Ni is sputtered on the resist pattern 11. (c) Perform electroforming of Ni. (d) When the substrate 10 is peeled off and lined with the base plate 12, the stamper 13a is completed.

(E) An ultraviolet ray (hereinafter referred to as UV) curable resin, for example, a liquid photopolymer 14a having a viscosity is dropped on the stamper 13a, a replica substrate 15a is placed, and the photopolymer 14a is diffused on the stamper 13a. Let

At this time, the photopolymer 14a is the duplicate substrate 15a.
It spreads outward due to its own weight or capillary phenomenon. Then, UV is radiated from above the duplicate substrate 15a to expose the photopolymer.
Cure 14a.

(F) Duplicate substrate with photopolymer 14a attached
15a is separated from the stamper 13a. In this way, the hologram disc 16 having the resin layer is duplicated.

[0015]

According to the above-mentioned conventional method, when the photopolymer is dropped on the stamper and the duplicate substrate is placed and diffused, the periphery of the photopolymer is aired as shown in FIG. 6 (a). Since the photopolymer is an anaerobic cured resin, the part in contact with air is UV.
Even if irradiated, it is hard to completely cure.

Further, as shown in FIG. 6 (b), when the photopolymer protrudes from the outer periphery of the duplicated substrate, there are many portions that are not cured further. Therefore, when the photopolymer attached to the duplicate substrate is peeled off, the uncured or semi-cured photopolymer remains as "burrs" on the stamper.
There is a problem that the number of steps for removing "burrs" and cleaning the stamper each time increases.

An object of the present invention is to provide a resin layer duplication method in which an uncured resin material does not remain in the stamper when the resin material is cured and then peeled from the stamper.

[0018]

FIG. 1 shows the principle of the present invention. In the figure, 15 is a substrate, 13 is a stamper having a predetermined shape, 14 is a curable resin material, and 17 is a substrate 15
The frame member has an outer diameter dimension as the inner diameter and has a predetermined height, at least the inner surface of which is formed of a material having a good releasability from the resin material.

Therefore, the frame member 17 is placed on the stamper 13, the liquid resin material 14 is dropped inside the frame member 17, the substrate 15 is placed on the resin material 14 to diffuse, It is configured to cure the resin material 14.

[0020]

[Function] By dropping the liquid resin material 14 inside the frame member 17 placed on the stamper 13, placing the substrate 15 on the resin material 14 and diffusing it, and then curing the resin material 14. It is possible to prevent the resin material 14 from protruding from the end of the substrate 15 and contact with air, and the uncured or semi-cured resin material 14 disappears. Can be omitted, and duplication becomes easy. The inside of the frame member 17 is made of resin material.
Since it has a good releasability with respect to 14, it can be easily peeled off.

[0021]

Embodiment An embodiment of the present invention will be described with reference to FIG. The photopolymer 14a and the duplicate substrate 15a in FIG. 2 correspond to the resin material 14 and the substrate 15 in FIG. 1, respectively.

As shown in FIG. 2A, a frame member 17a having an outer diameter dimension of the duplicate substrate 15a and an inner diameter and a height larger than the thickness dimension of the duplicate substrate 15a is provided. Therefore, the duplicate substrate 15a can be fitted inside the frame member 17a. Further, the frame member 17a is formed of a material having a good releasability from the photopolymer 14a, for example, glass.

Therefore, when the frame member 17a is placed on the stamper 13a and the liquid photopolymer 14a is dropped onto the inside of the frame member 17a by a predetermined amount and the duplicate substrate 15a is placed, the photopolymer is placed.
14a diffuses into the frame member 17a.

Next, the photopolymer 14a is cured by UV irradiation from above the duplicate substrate 15a. At this time, the duplicate substrate 15a
There is no protrusion of the photopolymer 14a from the end portion of, and there is no contact with air.

Therefore, as shown in FIG. 2B, the frame member 17a having a good peeling property is removed from the stamper 13a, and the duplicate substrate 15a to which the cured photopolymer 14a is adhered is stamped.
Peel from a. (The portion of the duplicate substrate 15a where the photopolymer 14a is not attached is pushed up from below to
Frame member 17a after peeling the duplicate substrate 15a to which 14a is attached
It may be a way to remove. In this way, when the photopolymer 14a is diffused by the frame member 17a, the duplicate substrate 15
It is prevented from protruding from the end of a, does not come into contact with air, and the uncured or semi-cured photopolymer 14a does not remain on the stamper 13a, which can prevent the occurrence of "burrs" and the time and effort required for cleaning each time. Copying can be done easily without the need for man-hours.

In the above example, the case where the photopolymer 14a is used as the resin material has been described, but in the case of a resin material which is cured by other means, for example, a thermosetting resin material or the like may be used, and the same effect can be obtained. can get.

[0027]

As described above, according to the present invention, the frame member having the outer diameter of the substrate as the inner diameter and having the predetermined height, at least the inner surface of which is made of a material having a good releasability from the resin material, is provided. Then, a curable liquid resin material is dropped on the inside of the frame member placed on the stamper, the substrate is placed on the resin material and diffused, and then the resin material is cured. It is possible to prevent it from protruding from the end part of the machine and touching it with air, and there is no uncured or semi-cured resin material, and even if the cured resin material is peeled from the stamper, there is no "burr" left,
Eliminates the need to remove "burrs" and clean the stamper every time.
This has the effect of facilitating duplication.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is an explanatory diagram showing an embodiment of the present invention.

FIG. 3 is an internal side view of the electrophotographic printing apparatus.

FIG. 4 is a perspective view showing an optical unit.

FIG. 5 is a process diagram of a hologram disc replication of a conventional example.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

13, 13a is a stamper, 14 is a resin material, 14
a is a photopolymer, 15 is a substrate, 15a is a duplicate substrate, 17 and 17a are frame members,

Claims (1)

[Claims] 1. A curable liquid resin material (14) is dropped onto a stamper (13) having a predetermined shape, and a substrate (15) is placed on the resin material (14). A resin layer duplication method of diffusing the resin material (14) onto the stamper (13) and then curing the resin material (14), wherein an outer diameter of the substrate (15) is an inner diameter, and A frame member (17) having at least an inner surface formed of a material having good releasability from the resin material (14) is provided at the height, and the frame member (17) is placed on the stamper (13). A method for replicating a resin layer, characterized in that the resin material (14) is dropped inside the frame member (17).