CN1209765C - Read-only disc scanning projective duplicating method and apparatus thereof - Google Patents
Read-only disc scanning projective duplicating method and apparatus thereof Download PDFInfo
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- CN1209765C CN1209765C CN 03156366 CN03156366A CN1209765C CN 1209765 C CN1209765 C CN 1209765C CN 03156366 CN03156366 CN 03156366 CN 03156366 A CN03156366 A CN 03156366A CN 1209765 C CN1209765 C CN 1209765C
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Abstract
The present invention relates to a method and a device for scanning, projecting and duplicating a read-only CD, which belongs to the technical field of CD duplication. To solve the duplication problems of high-density CD duplication difficulty and new style grey-stage and multi-stage read-only CDs of the prior art, the method and the device for scanning, projecting and duplicating the read-only CD are provided by the present invention. The method comprises the main steps that lighting spots are formed on a mother CD by a lighting system, lighting area parts which are positioned on the mother CD are imaged and exposed on resist, photochromic materials with an electric lock characteristic or photosensitizer on the surface of CD to be duplicated through a projection imaging system at the ratio of one to one. The scan, projection and duplication of the whole sheet of CD are finished by the synchronous rotation and straight-line feed motion of the mother CD and the read-only CD to be duplicated. The nondestructive duplication can be realized by the present invention, the service life of the mother CD is prolonged, and large numerical apertures are selected so as to meet the requirement of the high-density CD duplication. The technology is not only suitable for traditional pin edge record type read-only CD duplication, but also suitable for grey-stage and multi-stage read-only CD duplication.
Description
Technical field
The present invention relates to read-only optical disc scanning projection clone method and implement device thereof, belong to the optical media replication technical field.It is a kind of novel optical media replication method that the scanning projection of read-only optical disc duplicates, with traditional mold pressing injection moulding formula clone method tangible difference is arranged, the scope of application is more extensive, not only be fit to duplicating of traditional hole point edge recording read-only optical disc, also be fit to duplicating of novel gray scale sublevel multistep read-only optical disk.
Background technology
Traditional read-only optical disc duplication process be earlier with data message with the photoetching method imprinting on glass master, make pressing mold then, adopt method that injection moulding duplicates information reproduction on vinyl disc, plate metal film and diaphragm and make CD.This also is a kind of read-only optical disc production method that generally adopts at present.This method requires high to the stamper manufacture craft, corresponding making flow process complexity.In this duplication process, injection mould is molded to be key link wherein.Realizing that the pit precision is duplicated just requires plastic substrate flatness height, and stress birefrin is little, and injection temperature is higher.Though this contact clone method of injection moulding mold pressing efficient is high, but because mould and dish is basic directly contacts when duplicating, therefore the reproduction process meeting constantly causes the mould damage, each mould generally can only be suppressed 3000～5000 discs, and the quality of duplicating the read-only optical disc of production increases with the mold pressing number of times and reduces gradually.Need in the actual production to make father's mould, with the molded usefulness of doing a plurality of molding dies in order to production of father, in this process, may introduce fabrication error, thereby cause the mold pressing CD quality to descend again with stamper.In addition, this clone method only is applicable to the read-only optical disc of present employing hole and bank alternate recorded information.The nineties in 20th century occurred new multistage memory technology, realized to utilize gray scale to carry out sublevel the sublevel, promptly utilized material on each point, to absorb and store with the different sublevels that carry out of intensity of reflected light except the degree of depth and the pattern that utilize traditional hole point.Obviously, the technology of traditional injection moulding moulding replication is not suitable for gray scale sublevel multistep read-only optical disk, and the reflection type projection clone method when being used for gray scale sublevel multistep read-only optical disk the numerical aperture of optical system little, resolution is low, can't satisfy the needs of high density compact disc.
Summary of the invention
In order to solve the problem of duplicating of the difficult and novel gray scale sublevel multistep read-only optical disk of prior art middle-high density optical media replication, the present invention proposes read-only optical disc scanning projection clone method and implement device thereof, not only be fit to duplicating of tradition hole point edge recordable type read-only optical disc, also be fit to duplicating of novel gray scale sublevel multistep read-only optical disk.The solution of the present invention is as follows:
A kind of read-only optical disc scanning projection clone method is characterized in that this method comprises following steps:
1) light that sends of light source forms even field of illumination through illuminator on stamper, and described stamper employing mask arrangement is provided with the wide through hole of different length at stamper disc upper edge circumference; The part that is in described field of illumination on the described stamper was through 1: 1 projection imaging system, and imaging exposes on the resist on point edge recordable type read-only optical disc surface, tradition hole to be duplicated;
2) finish putting in order the scanning projection information reproduction of Zhang Guangpan by the synchronous rotation and the straight-line feed motion of described stamper and read-only optical disc;
3), develop and remove the resist that is exposed to the disc of the read-only optical disc after above-mentioned processing; Mode by etching aluminium film forms Information Level then; At information layer surface spin coating protective seam, finish duplicating of whole read-only optical disc at last.
Another kind of read-only optical disc scanning projection clone method of the present invention is characterized in that this method comprises following steps:
1) light that sends of light source forms even field of illumination through illuminator on stamper, described stamper is made up of cured layer, information recording layer and protective seam, described information recording layer adopts the photochromic material with electric lock characteristic, after the light exposure of each measuring point on the information recording layer by varying strength, electric lock is handled and is obtained, and each measuring point on the information recording layer is to the transmissivity difference of same wavelength light; The part that is in described field of illumination on the described stamper is through 1: 1 projection imaging system, imaging exposure on the photochromic class material with electric lock characteristic on gray scale sublevel multistep read-only optical disk surface to be duplicated or silver halide magenta-sensitive emulsion material;
2) finish putting in order the scanning projection information reproduction of Zhang Guangpan by the synchronous rotation and the straight-line feed motion of described stamper and read-only optical disc;
3) when described read-only optical disc be when adopting the gray scale sublevel multistep read-only optical disk of photochromic class material with electric lock characteristic, adopt the electric lock facture to form information recording layer.When described read-only optical disc is to adopt silver halide magenta-sensitive emulsion material read-only optical disc disc, then through forming information recording layer after development and the photographic fixing;
4) duplicating of whole read-only optical disc finished in sputtered aluminum reflection horizon on the information recording layer of read-only optical disc, and then spin coating layer protective layer.
A kind of mechanical driving device of realizing read-only optical disc scanning projection clone method of the present invention is characterized in that: described mechanical driving device is made up of straight-line feed device and the synchronous wheelwork that is fixed on this straight line worktable; The straight-line feed device comprises direct current torque motor, worm and gear, precision lead screw and ball--the straight line worktable on the V-type groove guide rail, and straight-line feed device direct current torque motor is through worm and gear and precision lead screw double reduction transmission rear drive ball--the straight line working table movement on the V-type groove guide rail; The synchronous wheelwork that is fixed on this straight line worktable comprises direct current torque motor, common axis and the two cover gear drives that modulus is identical, reduction gear ratio is identical, the wheelwork direct current torque motor drives the common axis uniform rotation, drive stamper and read-only optical disc rotates synchronously by described gear drive, obtain uniform exposure to guarantee whole card by the spiral path of line-spacings such as the rectilinear motion of the rotation of disc and worktable integral body is synthetic.
The read-only optical disc scanning projection clone method that the present invention proposes is a kind of contactless duplicating, its advantage just is to realize the lossless copy of CD, stamper does not contact each other mutually with read-only optical disc in the reproduction process, there is not mechanical damage, so the stamper life-span is long, and what change the quality of the read-only optical disc product that duplicates with the stamper access times.The scanning projection clone method has adopted the stamper mask arrangement, has simplified the stamper manufacture craft, has reduced the optical disc production cost.The contrast reflective projection system, scanning-projection system can adopt the projecting lens of large-numerical aperture, thereby can improve resolution, realizes duplicating of high-density read-only stored CD.In addition, the big advantage of another of this technology is exactly that it can be used for duplicating of novel gray scale sublevel multistep read-only optical disk, thereby makes the technology that adopts gray scale sublevel method to improve storage density and single-deck capacity be applied to reality.
Description of drawings
Fig. 1 is 1: 1 projection copying's optical system synoptic diagram.
Fig. 2 is the structural representation of the hole point edge recordable type read-only optical disc after developing.
Fig. 3 a is the stamper structural representation that is used to cheat point edge recordable type read-only optical disc scanning projection clone method.
Fig. 3 b is the sectional view that is used to cheat the stamper of point edge recordable type read-only optical disc scanning projection clone method.
Fig. 4 is the stamper structural representation that is used for the scanning projection clone method of gray scale sublevel multistep read-only optical disk.
Fig. 5 is the mechanical driving device synoptic diagram that is used for read-only optical disc scanning projection clone method.
Fig. 6 is straight line worktable transmission principle figure.
Fig. 7 is a scanning light spot radial feed synoptic diagram.
Embodiment
In scanning projection clone method of the present invention and device, adopt 1: 1 projection optical system of industrial comparative maturity, now principle of work of the present invention is described in conjunction with relevant drawings.
Principle of work when introducing the present invention earlier and being used for tradition hole point edge recordable type read-only optical disc and duplicating.As shown in Figure 1, the light that light source 1 sends forms even field of illumination through the lens in the illuminator 2 on stamper 3,1: 1 projection imaging system 4 of stamper surface portion by industrial comparative maturity that is in the field of illumination images in resist (or emulsion) layer for the treatment of the copy surface, and make the exposure of corresponding imaging region, and by stamper 3 with wait to duplicate the synchronous rotation of read-only optical disc 5 and scanning projection that the straight-line feed motion is finished whole Zhang Guangpan duplicates.Be the homogeneity of assurance exposure, allow the relative disc of imaging facula center become the line-spacing spiral path that waits of abduction type to move, synthesize by the uniform rotation of disc and the linear uniform motion of straight line worktable.
Scanning projection reproduction process for tradition hole point edge recordable type read-only optical disc, at first treat the dish base of copy with the organic material compacting, plate the aluminium film of one deck 50～70nm at the dish primary surface, spin coating one deck resist on the aluminium film then, through the resist after the scanning projection exposure through after developing, write down information, as shown in Figure 2,8 are the dish base, and 9 is aluminium lamination, 10 are the remaining resist in back that develops, and 11 is the resist that removes after developing.Then just can on the aluminium film, form the structure of recorded information, constitute the recorded information layer, last spin coating protective seam by etching.Shown in Fig. 3 a is the special stamper mask arrangement that adopts in the scanning projection clone method, and L represents live width, and d represents track pitch.Shown in Fig. 3 b is the sectional view of this stamper structure, and the information record symbol on this stamper of not being both of it and traditional stamper maximum is a wide through hole along the circumference different length.This stamper structure can be simplified its production technology, reduces the difficulty that stamper is produced, thereby has reduced the cost of optical disc production, and might realize the flexible mode of production of multiple class short run aborning.
For the scanning projection reproduction process of gray scale sublevel multistep read-only optical disk, its principle of work is similar, just adopts different stampers.At first on the dish base for the treatment of copy of compacting spin coating one deck luminosity formula optical recording material (as having the photochromic class recording materials of electric lock characteristic or silver halide magenta-sensitive emulsion etc.) as information layer to be recorded, in the darkroom through after the exposure of 1: 1 scanning projection, photochromic class material with electric lock characteristic forms information recording layer with the electric lock facture, form information recording layer after the silver halide magenta-sensitive emulsion material developing liquid developing, the photographic fixing of photographic fixing solution.Finish duplicating of gray scale sublevel multistep read-only optical disk behind sputtered aluminum reflection horizon and the spin coating protective seam.The multistage stamper structure of gray scale sublevel as shown in Figure 4,12 is the cured layer of stamper, 13 is the information recording layer of stamper, 14 is the protective seam of stamper.Stamper information recording layer 13 is made up of the photochromic material with electric lock characteristic, and after the light exposure of each measuring point on the information recording layer by varying strength, electric lock is handled and obtained.In the imprinting process, each measuring point on the information recording layer of stamper is different to the transmissivity of same wavelength light, so under the irradiation of single wavelength light, the pairing also corresponding difference of exposure intensity for the treatment of picture point on the copied disc information recording layer of each measuring point on the stamper information recording layer, thereby make the acquisition recording status identical or opposite on the information recording layer for the treatment of copied disc, realize multistage record with the stamper information recording layer.
Fig. 5 is a mechanical driving device synoptic diagram of realizing that scanning is duplicated.。Stamper in this device and the double plate realization of rotation synchronously of waiting to duplicate read-only optical disc, driving common axis 19 by wheelwork direct current torque motor 17 rotates, identical by two cover moduluses, the gear mechanism 18 that reduction gear ratio is identical drives stamper 3 respectively and waits to duplicate read-only optical disc 5 and rotate synchronously.Whole straight-line feed motion is provided by the straight line worktable 16 that is arranged on the marble platform 15.Fig. 6 is the transmission principle figure of straight line worktable, and straight-line feed device direct current torque motor 20 is through worm and gear 21 and precision lead screw 22 double reduction transmission rear drive balls--straight line worktable 16 motions on the V-type groove guide rail.
Illuminator forms the uniform light spots of diameter of phi 3mm at stamper mask place, the optical projection system of illuminated zone by 1: 1 forms the imaging exposure area of same diameter on the stamper in the relevant position of waiting to duplicate read-only optical disc.This relative CD in imaging exposure area is along the screw motion such as line-spacing such as grade that with the CD center of circle is the center.If the line-spacing of helical is 1mm, so hot spot inswept one when week radial feed 1mm, as shown in Figure 7.The read-only optical disc of diameter of phi 120mm is removed center pit, and after mechanical grip district and the peripheral dead zone, but the distance of remainder record information region is 36.65mm.The rated speed 600rpm of the wheelwork direct current torque motor of selecting for use 17, the gear mechanism ratio of gear is 2, stamper and treat that the synchronous rotational speed of copy is 1200rpm so, then at the uniform velocity the speed of straight line worktable is 20mm/s, calculates the time shutter of duplicating a read-only optical disc to be
This shows that efficient of the present invention is higher.
Having wide range of applications of the present invention's design can be realized lossless copy, simplified the manufacture craft of stamper, reduce the stamper cost of manufacture, improved the serviceable life of stamper, and can use big numerical aperture in the system, the resolution of raising system is applicable to duplicating of DVD-ROM.
Provide two embodiment of the present invention below.
Describe in conjunction with Fig. 1, Fig. 3 a, Fig. 3 b, Fig. 5 and Fig. 6.Light source 1 adopts the 405nm ultraviolet light.The dish base for the treatment of copy is formed through compacting by organic plastics, and thickness is 1.2mm (CD class dish base) or 0.6mm (DVD coils base), and the dish primary surface is the aluminium film of plating one deck 50～70nm earlier, again spin coating one deck ultraviolet photoresist on the aluminium film.Stamper 3 upper edge circumference are provided with the wide through hole of different length as information record symbol.CD class stamper live width L is 0.8 μ m, and track pitch d is 1.6 μ m, and DVD class stamper live width L is 0.4 μ m, and track pitch d is 0.74 μ m.Illuminator forms the even illumination hot spot of a diameter of phi 3mm at stamper 3 places, illuminated zone is being spun on respective regions imaging exposure on the ultraviolet photolithographic glue-line for the treatment of the copy surface through 1: 1 projection imaging system 4 on the stamper.The numerical aperture of optical system is 0.85.The speed of the uniform motion of straight line worktable 16 is 20mm/s, stamper and treat that the synchronous velocity of rotation of copy is 1200rpm.The rated speed 600rpm of the wheelwork direct current torque motor 17 that adopts, the ratio of gear of gear mechanism 18 is 2.Calculating the time shutter of duplicating a read-only optical disc is t=1.8325s.The developer solution of ultraviolet photolithographic glue-line after the exposure with 10%NaOH solution developed, form the information interrecord structure.Carry out etching with 10%HNO3 solution then, on the aluminium film, form final information recording layer.At information layer surface spin coating layer protective layer---finish duplicating of whole read-only optical disc behind the UV glue.
Describe in conjunction with Fig. 1, Fig. 4, Fig. 5 and Fig. 6.Light source 1 adopts high-pressure sodium lamp.The dish base for the treatment of copy is formed through compacting by organic plastics, and thickness is 1.2mm (CD class dish base) or 0.6mm (DVD coils base), and spin coating one deck luminosity formula recording materials silver bromide photosensitive emulsion is as photographic layer on it.Stamper 3 is made up of cured layer, information recording layer and protective seam.The information recording layer of described stamper is made up of the photochromic material diarylethene with electric lock characteristic, add 3 minutes 3.2V latch voltages after the light exposure of each measuring point on the information recording layer with varying strength and obtain, each measuring point on the information recording layer is to the transmissivity difference of same wavelength light.Illuminator forms the even illumination hot spot of a diameter of phi 3mm at stamper 3 places, the same area imaging exposure of copy is being treated through 1: 1 projection imaging system 4 in illuminated zone on the stamper.The numerical aperture of optical system is 0.85.The speed of the uniform motion of straight line worktable 16 is 20mm/s, stamper and treat that the synchronous velocity of rotation of copy is 1200rpm.The rated speed 600rpm of the wheelwork direct current torque motor 17 that adopts, the ratio of gear of gear mechanism 18 is 2.Calculating the time shutter of duplicating a read-only optical disc is t=1.8325s.The D-76 developing liquid developing is used in the exposure back, and the photographic fixing of F-5 photographic fixing solution forms final information recording layer.The processing procedure of photosensitive material, exposure process and developing fixing process need to carry out in the darkroom.At information layer surface sputter one deck reflection horizon aluminium, last spin coating layer protective layer---finish duplicating of whole gray scale sublevel multistep read-only optical disk behind the UV glue.
Claims (3)
1. read-only optical disc scanning projection clone method is characterized in that this method comprises following steps:
1) light that sends of light source forms even field of illumination through illuminator on stamper, and described stamper employing mask arrangement is provided with the wide through hole of different length at stamper disc upper edge circumference; The part that is in described field of illumination on the described stamper was through 1: 1 projection imaging system, and imaging exposes on the resist on point edge recordable type read-only optical disc surface, tradition hole to be duplicated;
2) finish putting in order the scanning projection information reproduction of Zhang Guangpan by the synchronous rotation and the straight-line feed motion of described stamper and read-only optical disc;
3), develop and remove the resist that is exposed to the disc of the read-only optical disc after above-mentioned processing; Mode by etching aluminium film forms Information Level then; At information layer surface spin coating protective seam, finish duplicating of whole read-only optical disc at last.
2. read-only optical disc scanning projection clone method is characterized in that this method comprises following steps:
1) light that sends of light source forms even field of illumination through illuminator on stamper, described stamper is made up of cured layer, information recording layer and protective seam, described information recording layer adopts the photochromic material with electric lock characteristic, after the light exposure of each measuring point on the information recording layer by varying strength, electric lock is handled and is obtained, and each measuring point on the information recording layer is to the transmissivity difference of same wavelength light; The part that is in described field of illumination on the described stamper is through 1: 1 projection imaging system, imaging exposure on the photochromic class material with electric lock characteristic on gray scale sublevel multistep read-only optical disk surface to be duplicated or silver halide magenta-sensitive emulsion material;
2) finish putting in order the scanning projection information reproduction of Zhang Guangpan by the synchronous rotation and the straight-line feed motion of described stamper and read-only optical disc;
3) when described read-only optical disc be when adopting the gray scale sublevel multistep read-only optical disk of photochromic class material with electric lock characteristic, adopt the electric lock facture to handle and form information recording layer, when described read-only optical disc is to adopt silver halide magenta-sensitive emulsion material read-only optical disc disc, then through forming information recording layer after development and the photographic fixing;
4) duplicating of whole read-only optical disc finished in sputtered aluminum reflection horizon on the information recording layer of read-only optical disc, and then spin coating layer protective layer.
3. mechanical driving device of realizing read-only optical disc scanning projection clone method is characterized in that: described mechanical driving device is made up of straight-line feed device and the synchronous wheelwork that is fixed on this straight line worktable; The straight-line feed device comprises direct current torque motor, worm and gear, precision lead screw and ball--the straight line worktable on the V-type groove guide rail, and straight-line feed device direct current torque motor is through worm and gear and precision lead screw double reduction transmission rear drive ball--the straight line working table movement on the V-type groove guide rail; The synchronous wheelwork that is fixed on this straight line worktable comprises direct current torque motor, common axis and the two cover gear drives that modulus is identical, reduction gear ratio is identical, the wheelwork direct current torque motor drives the common axis uniform rotation, drive stamper and read-only optical disc rotates synchronously by described gear drive, obtain uniform exposure to guarantee whole card by the spiral path of line-spacings such as the rectilinear motion of the rotation of disc and worktable integral body is synthetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156366 CN1209765C (en) | 2003-09-05 | 2003-09-05 | Read-only disc scanning projective duplicating method and apparatus thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156366 CN1209765C (en) | 2003-09-05 | 2003-09-05 | Read-only disc scanning projective duplicating method and apparatus thereof |
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| Publication Number | Publication Date |
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| CN1490804A CN1490804A (en) | 2004-04-21 |
| CN1209765C true CN1209765C (en) | 2005-07-06 |
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| CN 03156366 Expired - Fee Related CN1209765C (en) | 2003-09-05 | 2003-09-05 | Read-only disc scanning projective duplicating method and apparatus thereof |
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| CN (1) | CN1209765C (en) |
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- 2003-09-05 CN CN 03156366 patent/CN1209765C/en not_active Expired - Fee Related
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