TWI273593B - Colored optical discs and methods for making the same - Google Patents

Abstract

Embodiments of optical discs and methods for making the same are disclosed. In one embodiment, the optical disc comprises: at least two plastic substrates (1) comprising a bonding layer and a data layer disposed therebetween, wherein at least one of the substrates (1) is a read side substrate comprising greater than or equal to about 0.01 wt% colorant, based upon the total weight of the read side substrate, and wherein the read side substrate has a UV Bonding Index of greater than or equal to about 0.5. One method for making the optical disc comprises: forming a first plastic substrate comprising greater than or equal to about 0.01 wt% colorant, based upon the total weight of the first plastic substrate, wherein a UV Bonding Index of the first plastic substrate is controlled to be greater than or equal to about 0.5, disposing a data layer between the first plastic substrate and a second substrate, bonding the first plastic substrate to the second plastic substrate with a bonding layer, and curing the bonding layer.

Description

1273593 A7 B7 V. INSTRUCTIONS INSTRUCTIONS (1) RELATED APPLICATIONS This application is a continuation-in-part of U.S. Patent Application Serial No. 09/683,346, filed on December 17, 2001. This manual is incorporated by reference. BACKGROUND OF THE INVENTION The present disclosure relates to a data storage medium and, more particularly, to a colored guest storage medium. Digital Multimedia Discs (DVDs) have slowly but surely replaced CDs. These formats offer significantly more storage capacity for CDs, which can record up to 8 hours of high-quality audio and video content. In 2001, the number of DVDs sold in the global market was nearly 10%, and in 2004, we predicted that it would reach about 4 billion. The construction of DVD discs has been changed to achieve a high storage density of the disc (the DVD has the same overall size as the CD). The most important and visible difference is that the DVD is no longer made of an i.2mm thick plastic substrate, but is made of two 0.6mm substrates bonded together (nm Taylor, ed· Me Graw Hill, 1998, "DVD Demystified: "). Further, the read laser wavelength has been changed from 780 nm (near-infrared spectral portion) for CD to 635 or 650 nm (visible light spectrum) for DVD. Depending on the type of DVD (DVD-5' DVD- 9 > DVD- 10 - DVD14 > DVD-18, DVD-R, DVD-RW, etc.), the DVD can be constructed from single-sided/single-chip (DVD-5) becomes double-sided/double-sided (DVD- 18), not to mention recordable formats (such as DVD-R and DVD-RW). Applicable to the National Standard for Optical Paper (CNS) Α4 Specification (210X297 mm) — II----fi (Please read the note on the back and fill out this page) Printed by the Ministry of Economic Affairs, Intellectual Property Bureau, Staff Consumer Cooperative -5- 1273593 A7 B7_ V. INSTRUCTIONS (2) Strict specifications required by the Media Association (European Information and Information Systems Standardization Association (ECMA) Specification No. 267 for 1.2〇mm DVD-only discs) (Read first The fact that the backside note is refilled with this page} and the wavelength of the laser in the visible spectrum has made DVD manufacturing a challenge. The Ministry of Economic Affairs, the Intellectual Property Office, and the Consumer Cooperatives printed the DVD is not the only optical requirement for the substrate. In other words, the size of the pockets in the DVD is small, which implies that the DVD is more sensitive to resin quality (impurities) than CD. Because of the thinner size (0.6 mm instead of 1.2 mm), the DVD is molded. It is more challenging than CD. In fact, the rheology (flow characteristics) of the resin is important and closely controlled. Therefore, the inconsistency of the thickness of the disc is also one of the discs. Source. DVD is sensitive to the presence of such defects, because DVDs are not only thin and read within the visible spectrum, but also read at higher rotation/scan speeds than standard CDs. Multi-layer DVD formats (such as DVD-9, DVD-14, and DVD-18) represent the highest degree of difficulty due to the presence of a layer of fully reflective layer and a layer of semi-reflective layer (with 2 layers of pockets, for example, Geographically located locator-like pattern. Single-layer DVDs (DVD-5 and DVD-10) have no semi-reflective layers and contain only one layer of pockets. Due to differences in optical disc construction, single-layer discs The reflectivity requirements between the multi-layer discs and the multi-layer discs are very different. Up to now, the pre-recorded or recordable multi-layer type that can be obtained on the towel racks • DVD discs are made of colorless resin. The difference in appearance comes from the metal being plated (ie, the data layer). For example, when gold is used, a gold plate is obtained. Similarly, when silver, silver alloy or aluminum is used, a bright silver color is obtained. Standard (CNS) A4 specification (210X2) 97 mm) β 1273593 A7 ___B7____ V. Inventive description (3) Inventive stem (please read the back note first and then fill out this page) The present invention discloses an optical disc and a method of manufacturing the same. In one embodiment of the present invention, The optical disc comprises: at least two layers of plastic substrates, and an adhesive layer and a data layer between the two substrates, wherein at least one of the plastic substrates is a read surface substrate, which is greater than or equal to 0.01 wt% a coloring agent (according to the total weight of the reading surface substrate), wherein the reading surface substrate has an ultraviolet adhesion index of about 0.5 or more. A method for manufacturing an optical disc comprises: manufacturing a first plastic substrate containing a coloring agent greater than or equal to about 0.1% by weight (according to the total weight of the first plastic substrate), wherein the first plastic substrate is ultraviolet-viscous The index is controlled to be greater than or equal to about 0.5, and a layer of data layer is disposed between the first plastic substrate and the second substrate. The first plastic substrate is bonded to the second plastic substrate by an adhesive layer, and The adhesive layer is cured. These and other features will be apparent from the following brief description, detailed description and accompanying drawings. The Ministry of Economic Affairs Intellectual Property Office employee consumption cooperative printing diagram is briefly described with reference to the following figures, wherein: Figure 1 is a schematic illustration of the construction of a DVD-9; * Figure 2 is a type having a second surface mounted on the substrate Figure 3 is a graphical representation of the CD construction of a single reflective layer placed in a substrate; -7- This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) 1273593 A7 B7 V. INSTRUCTIONS (4) (Please read the notes on the back and fill out this page.) Figure 4 is a two-layer reflective data layer (a semi-reflective data layer and a layer) arranged in a substrate. Figure 5 is a graphical representation of a DVD construction with a single reflective data layer; Figure 6 is a diagram of a two-layer reflective data layer (both layers are placed in the center of the substrate) Figure 2 is a diagram showing a DVD structure having two layers of reflective data layers (both layers are disposed on opposite sides of the center of the substrate, and Figure 8 is a diagram showing a DVD structure having two layers of reflective data layers (both layers are disposed on the same side of the substrate and can be read from the same side of the substrate). Figure 9 is a graphical illustration of a DVD structure with four reflective data layers (two layers placed on each side of the substrate and two layers can be read from each side of the substrate); Figure 10 is a graphical illustration of the transmittance of several coloring agents (0.014wt%) in a 1.2mm polycarbonate substrate. Figure 11 is a graphical illustration of the transmittance curve of a test blend. Figure 12 is a graphical illustration of the spectral distribution of a "D" type electrodeless bulb from Fusion UV Systems; Figure 13 is a graphical illustration of the percentage of incident energy of a penetration test substrate; -8- This paper scale applies to Chinese national standards (CNS) A4 size (210X297 mm) 1273593 A7 B7 V. Description of the invention (5) Figure 14 is a graphical illustration of the absorption spectrum of the Daicure Clear SD-698 paint. DETAILED DESCRIPTION OF THE INVENTION The DVDs currently found on the market are made of a transparent (colorless) resin. The transparent optical disc exhibits good photoelectric properties (reflection, chattering, intra-parity (PI) error, birefringence, etc.) and good mechanical properties (reflection, even after curing for 4 days at 80 ° C and a relative humidity of 85%). Tilt to / tangent/vertical). In the attempt to fabricate a colored disc, we have found that some of the colored contaminants have poor adhesion, which is reflected in the mechanical properties of the disc (i.e., radial/tangential/vertical tilt). In fact, several colored discs are completely out of specification (for example, radial tilt is greater than ± 800 millidegels (mdeg)), so they cannot be considered as functional discs defined by industry standard specifications (for 1.20mm DVD) European Information and Information Systems Standardization Association (ECMA) Specification No. 267 for CD-ROMs. 〇 Adhesion is equivalent to an adhesive layer (also known as lacquer or glue) used to bond a two-layer plastic substrate of a DVD. The curing is insufficient, and the sticking problem can be found in any kind of disc using color and glue, such as any type of DVD format (for example, single layer type (such as DVD-5 and DVD-10), multi-layer type (such as DVD·9, DVD-14, DVD- 18), etc.). Insufficient curing of the adhesive layer results in tilting or causing (in the case of the most grooves) adhesion is completely ineffective (the two substrates cannot be fixed to each other). The method of bonding the plastic substrate of the DVD disc can be ultraviolet (for example, the Chinese National Standard (CNS) A4 specification (210X297 mm) is applied to the paper scale (please read the note on the back and then fill in the page) Bureau employee consumption cooperative printing -9- 1273593 A7 __B7__ V. Invention description (6) 330~410mm) Irradiation adhesive (for example, photocurable adhesive layer) (Please read the back note and fill out this page) The way to implement it. The controversy over colored discs is that the pigmented substrate exhibits an absorption that depends on the level of colorant and the absorption of some of the ultraviolet rays of the chemical properties. When the amount of ultraviolet light penetrating the plastic substrate is low (for example, the ultraviolet light penetrating the transparent substrate is less than 1%), the problem of adhesion occurs. Printed by the Ministry of Economic Affairs Intellectual Property Office Staff Consumer Cooperatives The threshold energy is passed through the colored substrate to ensure proper bonding of the substrate layers in the colored disc. Threshold energy is defined as the total spectral energy (watts) that penetrates within about 330 to 41 Onm. We should emphasize that the threshold energy in this specification is defined by the same curing time as the transparent substrate. It should be understood that the lower threshold energy should be combined with a longer curing time to increase the efficiency of the absorption spectrum of the bonding layer and promote adhesion. Typical curing times are within 3 seconds and are preferred within 2 seconds. However, the operating cycle will increase considerably, which has a negative impact on the manufacture of optical discs, so it is not an option. The threshold energy can be quantified according to a parameter referred to as the "UV Adhesion Index" which is a function of the absorption spectrum of the colored substrate and the spectral distribution of the illumination source. In order to obtain the UV adhesion index, we first calculate the percentage of the output of the spectral energy output of the illumination source and the transmission through the colored plastic substrate as a function of the wavelength of a visible light spectrum over the entire ultraviolet line. The integral of this curve at a wavelength of 3 3 0 nm to the extent that the bonding layer is off (ie, the point at which the bonding layer no longer absorbs light) provides the total amount of energy penetrating the colored substrate in the spectral range. value. The ratio of the total energy of the colored substrate to the energy passing through the transparent substrate (calculated in the above manner) provides the ultraviolet adhesion index number 値. Although we can use the UV I above the scale of greater than or equal to 0 · 5 for the Chinese National Standard (CNS) A4 specification (210X297 mm) ~ 1273593 A7 B7 V, invention description (7) adhesion index 'but still preferred to be greater than Or a UV adhesion index of about 1. 较 is preferred to a UV adhesion index of greater than or equal to about 2, and a UV adhesion index of greater than or equal to about 4.0 is preferred. We have found that we can use the following UV adhesion index: less than or equal to 70, less than or equal to 60, less than or equal to 50, less than or equal to 40 'less than or equal to 30, less than or equal to 20, less than Or equal to about 10, less than or equal to about 5. We can calculate the UV adhesion index for any bulb. Some of the available light bulbs include: "D" bulb from Fusion UV Systems, FQ 20007 bulb for Flash Pulse UV curing system (Marubeni/Origin DVD Bonder), DVD Edge Cure bulb (M2 Corp) 'RC 742 bulb (from Xenon Corp) and so on. By the same token, we can calculate the UV adhesion index of any adhesive layer (at least a portion of the desired spectrum of light). Some of the available adhesive layers include: Daicure Series SD-693, SD-694 and SD-698 (Dainippon Ink & Chemicals, Inc.), Quretech DVD 065 and DVD 106, Kayarad MPZ-62, etc., as well as the aforementioned stickies. A combination of at least one of the layers. Referring to Fig. 1, a digital multimedia disc (DVD) comprises two bonded plastic substrates (or resin substrates) 1, typically each having a thickness of less than or equal to about 1.0 mm and a preference of less than or equal to about 77 mm. A thickness greater than or equal to about 0.4 mm is also preferred. At least one of the substrates comprises more than one (e.g., 3, 5) data layers. The first data layer 3 (often referred to as layer 0 (or L0)) is closest to the read side of the disc (surface 7). The second data layer 5 (commonly referred to as layer 1 (L1)) is second closest to the read surface 7. Typically, glue 9 and any ΜΜΜΒ aWM MW 11 are placed in the middle of L0 (3) and L1 (5) (please read the note on the back and fill out this page). The Ministry of Economic Affairs, Intellectual Property Office, Staff Cooperatives, Printed Paper Scale China National Standard (CNS) Α4 Specifications (210X297 mm) -11 - 1273593 A7 B7 V. Protective Coverage or Separation Layer 1 of Invention Note (8). The one-sided DVD (i.e., read from a single reading surface 7 disposed on one side of the DVD) may also include a label 13 disposed on the DVD side opposite the reading surface 7. In the case of a single-layer type DVD (DVD5, DVD 10) read from the reading surface 7, the surface to be molded is covered with a thin reflective material layer by sputtering or other deposition method. This results in a metal coating typically on the order of about 60 to 100 Å thick. (See Figures 3, 5 and 6) For a two-layer data layer type DVD (read from the same side as the read side 7, such as DVD9, DVD14, DVD18), the laser must be available from the first reading of the disc. One layer 3 is reflected, but is also condensed or transmitted through the first layer 3 when the second layer 5 is read. (See Figures 4, 7, 8, and 9; DVD9, DVD9, DVD14, DVD18, respectively). Therefore, the first layer 3 is from "translucent" (ie semi-reflective), while the second layer 5 is "total reflection". Sexuality. Under the current standards established by the Optical Media Association, the total reflectivity and semi-reflective data layers measured under electrical parameters R14H (described in ECMA Specification No. 267) are below the laser wavelength. The metallization combination should be about 18% to 30%. In the current DVD case, the laser wavelength generally used is less than or equal to 700 nm, and the preference is about 400 nm to 675 nm, which is preferably about 600 nm to 675 nm. Although these metallization standards were developed for the use of a DVD data layer of a colorless optical quality resin. However, these standards are also applied to DVD systems using colored resins. When the resin is colored, light can penetrate the substrate or be reflected from the substrate. The metallization characteristics and thickness of the semi-reflective layer and the total reflection layer (L0 (3) and L1 (5)) are suitable for allowing light to penetrate the substrate. The required reflectance can be measured on the paper scale using the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read the notes on the back and fill out this page)

Ordered Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed -12- 1273593 A7 __ B7_ V. Invention Description (9) (Please read the note on the back and fill out this page). Obtain the following method: The thickness is balanced with the reflectivity of the semi-reflective data layer 3, and the thickness of the fully reflective data layer 5 is adjusted to ensure that the reflectivity of the data layer 5 is within the desired specifications. Metallization of individual data layers can be obtained using a variety of reflective materials. Reflective materials (e.g., metals, alloys, etc.) having sufficient layers to be used as semi-reflective and/or fully reflective materials can be used, and the material can be suitably sputter coated onto the substrate. Some useful reflective materials include: gold, silver, platinum, rhodium, aluminum, and the like, as well as a combination of the alloy and at least one of the foregoing materials. For example, the first layer/second layer of reflective data layer metallization may be: gold/gold, silver alloy/absolute, silver alloy/silver alloy, and the like. In addition to the total reflectivity of each layer 3,5, the difference in reflectivity between the reflective data layer (such as the layer 3, 5 printed by the Ministry of Economic Affairs Intellectual Property Office employees' cooperatives) should be limited to ensure sufficient Layer reflectivity. Conveniently, the difference in reflectance between the layers (e.g., the first layer and the second layer 3, 5) is less than or equal to about 5%, the preference is less than or equal to about 4%, and the preference is less than or equal to about 3.0%. The reflectance difference preference between adjacent reflective data layers 3, 5 is greater than or equal to 〇. 5 % left and right, and the preference is greater than or equal to about 1%. The following should be noted: although it is about the description of the second layer, we know that the number of layers above two layers can be used, and the difference in reflectivity between the layers should be as described above. The reflective data layer is typically sputtered or placed on a pattern formed on the surface of the substrate via molding, such as surface features such as pockets, flutes, bumps, and start/stop orientation. Wait). The deposition may include first spraying a layer of semi-reflective data on the patterned surface. Paper size Common Chinese National Standard (CNS) A4 specification (210X297 mm) ~ 1273593 A7 ____ B7_ V. Description of invention (1〇) ° A layer or protective coating can then be placed on the semi-reflective data layer. If a multi-layer data layer type DVD (e.g., DVD 14, DVD 18, etc.) is to be manufactured, a second patterned surface (e.g., molding, etc.) can be fabricated on the side of the opposite side of the semi-reflective data layer. A fully reflective data layer can then be sputtered or disposed on the spacer layer. Further, in the configuration of the DVD 14, the total reflective material layer may be deposited on the patterned surface of the second substrate (or resin plate). A layer of spacer or protective coating is then placed over one or both of the semi-reflective data layer and the fully reflective data layer. The adhesive or glue can then be placed between the two substrates to bond the two substrates together to form a disc as illustrated in Figures 3-5. Optionally, the separation layer may be arranged such that several layers of semi-reflective data layers are disposed between adjacent layers. The reflectivity of the reflective data layer can be from about 5% to about 100%, depending on the number of reflective data layers. If a single layer of reflective material layer is used, the reflectivity of the data layer is preferably from about 30% to about 100%, more preferably from about 35% to about 90%, more preferably from 45% to 85%. If a two-layer reflective data layer is used, the reflectance of the data layer is preferably from about 5% to 45%, more preferably from about 10% to 40%, more preferably from about 15% to 35%, particularly preferably about 18% to 30%. Finally, if a multilayer reflective data layer (eg, more than two reflective data layers that can be read from a single read surface) is used, the reflectance is preferably from about 5% to 30%, preferably 5%. Up to 25%. A particularly desirable range is currently based on ECMA Specification No. 267, where a double layer DVD (eg, at least one layer of total reflection layer and at least one layer of semi-reflective layer) has a reflectance of about 18% to 30% or (Please read the notes on the back and fill out this page)

Customs Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed Paper Size General Chinese National Standard (CNS) A4 Specification (210X297 mm) -14 - 1273593 A7 B7 V. Invention Description (11) Single layer DVD (for example, one layer full Reflective layer) has a reflectivity of about 45% to 85%. The substrate can comprise any optical quality plastic (e.g., any plastic that can penetrate from about 60% to about 94% of the wavelength of light in the range of laser light). Within the range of transmission, the transmittance is preferably greater than or equal to about 70%, preferably greater than or equal to about 74%, particularly preferably greater than or equal to about 78%. Depending on the type and amount of the coloring agent used, the transmission rate can be less than or equal to about 92%, or even less than or equal to about 88%, and even less than or equal to about 85% (depending on the colorant type). . It should be mentioned below that the ability to achieve the desired viscosity of the substrate becomes more difficult because the transmittance of the colored substrate is lowered. The plastic substrate may comprise a resin, such as an amorphous, crystalline, or semi-crystalline thermoplastic, a thermosetting plastic, or a combination of at least one of the foregoing. Some useful plastics include: polyether oximines, polyetheretherketones, polyvinyl chloride, polyolefins (including but not limited to linear and cyclic polyolefins and including polyethylene, chlorinated polyethylene, poly Propylene, etc., polyesters (including but not limited to: poly(p-vinyl phthalate, poly(p-butylene terephthalate), polycyclohexamethylene phthalate, etc.), polyamines, polyglomerates ( Including but not limited to: polyether masters, polyether ether masters, hydrogenated polyglosates, etc.), polydecimides, polyether oximines, polyether sulphates, polyphenylene sulfides, polyethers Ketones, polyetheretherketones, ABS resins, polystyrenes (including but not limited to, gasified poly-B storage) inter-specific polystyrene-acetyl and random _LL polystyrene , polycyclohexylethylene, styrene-acrylonitrile copolymer, styrene-maleic anhydride copolymer, etc.), polybutadiene, polyacrylate (this paper scale applies to China National Standard (CNS) A4 specification (21〇 X297 mm) (Please read the notes on the back and fill out this page)

Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed -15- 1273593 A7 ___ B7 _ V. Description of Invention (12) • Includes but is not limited to: polymethyl methacrylate, methacrylate-polyimide copolymer Etc.), polyacrylonitrile, polyacetal, polycarbonate, polyphenylene ether (including but not: polyphenylene derived from 2,6-xylenol and copolymer and 2,3,6-tricresol) Ether, etc.), ethylene-vinyl acetate copolymer, polyvinyl acetate, liquid crystal polymer, ethylene-tetrafluoroethylene copolymer, aromatic polyester, polyvinyl fluoride, polyvinylidene fluoride, polyvinylidene chloride , tetrafluoroethylene fluorocarbon copolymer (such as Teflon), epoxy polymer, phenolic resin, alkyd resin, polyester, polyimine, polyamine phthalate, polyoxyalkylene, polydecane , Bismaleimides, cyanate esters, vinyl resins, benzocyclobutene resins, and blends, copolymers, mixtures, reaction products and composites of at least one of the above plastics. Conveniently, the substrate comprises polycarbonate, particularly a substrate that is predominantly polycarbonate (e.g., greater than or equal to 80% polycarbonate). As used herein, "polycarbonate", "polycarbonate composition" and "composition containing aromatic carbonate chain units" include compositions having structural units of formula (I): Read the notes on the back and fill out this page) -R1—0- -o—— (I) At least 60% of the total number of R1 groups printed by the Intellectual Property Office of the Intellectual Property Office of the Ministry of Economic Affairs is an aromatic organic group. 'The balance is an aliphatic, alicyclic, or aromatic group. Conveniently, R1 is an aromatic organic group and prefers a group of formula (II): -A1 - Y1 - A2- (II) -16- This paper scale applies to the Chinese National Standard (CNS) A4 specification ( 210×297 mm) 1273593 A7 B7 V. Inventive Note (13) wherein each of A1 and A2 is a monocyclic divalent aryl group, and Y1 is a bridging group having one or two atoms (Y1 separates A1 and A2) open). In an exemplary embodiment, an atom separates A1 from A2. A non-limiting example of an exemplary of this type of group is - 〇-, -S-, - S (〇)-, -S (〇2) _ , -C (〇)-, methyl group, stretched ring Hexylmethyl, 2-[2,2,1]-bicycloheptyl, ethylidene, isopropylidene, neopentyl, cyclohexyl, cyclopentadecane, cyclododecane, and adamantane . The bridging group Y1 may be a hydrocarbon group or a saturated hydrocarbon group such as a methyl group, a cyclohexylidene or a isopropylidene group. Polycarbonates can be produced by interfacial reaction of a dihydroxy compound in which only one atom separates A1 and A2. The "dihydroxy compound" used in the present specification includes: a bisphenol compound having the following formula (III): (Ra)p Λ

(ΙΠ) Ministry of Economic Affairs Intellectual Property Office employee consumption cooperative printed in which Ra and Rb each represent a halogen atom or a monovalent hydrocarbon group, and may be the same or different; P and Q each independently represent 0 to 4 An integer; Xa represents one of the groups of formula (IV):

Rc I a c- or

ReII —C·— (IV) where R. And Rd each independently represent a hydrogen atom or a monovalent linear or cyclic hydrocarbon group, and IT is a divalent hydrocarbon group. Some exemplary non-limiting examples of suitable dihydroxy compounds include (please read the notes on the back and fill out this page)

This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) -17- 1273593 A7 B7 V. Invention description (14) ϋϋ· ϋ^ϋ mmmmMMmmm am- mi tiBui mi iMJi el 111 in (please read the back first) Precautions for refilling this page) Dihydric phenols and dihydroxy-substituted aromatic hydrocarbons are disclosed by the name or chemical formula (general formula or specific chemical formula) in U.S. Patent No. 4,217,438. A non-unique list of specific examples of the form of diphenolic compounds which may be represented by the formula (ΠΙ) includes: 1, fluorene-bis(4-hydroxyphenyl)methane; 1, bis(4-hydroxyphenyl)ethane; 2,2-bis(4-hydroxyphenyl)propane (hereinafter referred to as "diphenol A" or "BPA"); 2,2-bis(4-hydroxyphenyl)butane; 2,2-double (4-hydroxyphenyl)octane; 1 '1-bis(4-hydroxyphenyl)propane; 1, bis(4-hydroxyphenyl)-n-butane; bis(4-hydroxyphenyl)phenylmethane 2,2-bis(4-hydroxy-1-methylphenyl)propane; ^ 1,1-bis(4-hydroxy-tert-butylphenyl)propane; bis(hydroxyaryl)alkane (eg 2 , 2-bis(4-hydroxy-3-bromophenyl)propane); 1,1-bis(4-hydroxyphenyl)cyclopentane; bis(hydroxyaryl)cycloalkane (eg 1,1- Bis(4-hydroxyphenyl)cyclohexane); and a combination of at least one of the above compounds. Printed by the Ministry of Economic Affairs, the Intellectual Property Bureau, and the Consumer Cooperatives. We can also use polycarbonates, which are made by two or more different copolymers of dihydric phenols or dihydric phenols and ethylene glycol or Polymerization with a hydroxyl terminated polyester or acid terminated polyester or with a dibasic acid or with a hydroxy acid or with an aliphatic diacid, in this case we prefer to use a carbonate copolymer rather than homopolymerization Things. Usually, the 'deuterated aliphatic diacids have from about 2 to about 40 carbon atoms. A suitable aliphatic diacid dodecenoic acid. Polyarylates and polyester monocarbonate resins or blends of the two may also be used. We can also use branched polycarbonates, as well as blends of linear polycarbonates and branched polycarbonates. _ Branched polycarbonates can be used to extend the branching agent during polymerization. Coronation This paper scale is prepared in accordance with the Chinese National Standard (CNS) A4 specification (210><297 mm) -18- 1273593 A7 ____ B7_ _ V. Inventive Note (15). (Please read the notes on the back and fill out this page.) These branching agents may contain polyfunctional organic compounds containing at least three functional groups (hydroxyl, carboxyl, carboxylic anhydride, haloformamidine), and the aforementioned groups. a mixture of at least one of the masses. Specific examples include: trimellitic acid 'benzene trimellitic anhydride, trimellitic acid chloride, tri-p-hydroxyphenylethane, eosin-diphenol, trisphenol TC (1,3,5-tris(p-hydroxyphenyl) Isopropyl)benzene), trisphenol PA (4 (4,1,1-bis(p-hydroxyphenyl)-ethyl)αα-dimethylphenyl)phenol), 4-chloroformic anhydride, benzene Tris-acid and benzophenone tetracarboxylic acid, and the like. The branching agent can be added at a level of from about 0.05 to 2.0% by weight based on the total weight of the resin. Branching agents and methods of making the branched polycarbonates are disclosed in U.S. Patent Nos. 3,635,895 and 4,001,184. All types of polycarbonate end groups are encompassed by the present invention. A suitable polycarbonate type is mainly diphenol A, wherein each of A1 and A2 is a para-phenyl group and Y1 is a isopropylidene group. Conveniently, the polycarbonate has an average molecular weight of from about 5,000 to about 10,000, more preferably from about 10,000 to 65,000, and most preferably from about 15,000 to 35,000. Printing by the Intellectual Property Office of the Ministry of Economic Affairs, the Consumer Cooperatives In the case of monitoring and evaluating the synthesis of polycarbonate, it is particularly important to determine the concentration of the Flies product present in the polycarbonate. As mentioned, the apparent production of the Fries product can cause the polymer to branch and create an uncontrolled melting behavior. As used in this specification, "Flis" and "Flies product" represent repeating units in polycarbonates of formula (V): -19- This paper scale applies to Chinese National Standard (CNS) A4 Specifications (210 X297 mm) 1273593 A7 B7

(Please read the note on the back and then fill out this page.) Printed by the Ministry of Economic Affairs, Intellectual Property Office, Staff Consumer Cooperative. Xa is a divalent group related to formula (III) above. The polycarbonate composition may also include various additives which are generally incorporated into the polycarbonate composition. Such additives are: for example, dips or enhancers; thermal stabilizers; antioxidants; light stabilizers; plasticizers; antistatics; mold release agents; additional resins; foaming agents; Synthesis of at least one of the additives. Examples of dips or enhancers include: glass fibers, asbestos, carbon fibers, silica sand, talc, and carbonated bells. Examples of thermal stabilizers include: triphenyl phosphite, tris(2,6-dimethylphenyl) phosphite, tris (mixed mono- and dinonylphenyl) esters, phosphonic acid xylene , and trimethyl phosphate. Examples of antioxidants include: octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate, and pentaerythritol tetra[3-(3,5-di-tert-butyl-4- Hydroxyphenyl) propyl] ester. Examples of the light stabilizer include 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(2-hydroxy-5-tert-octylphenyl)benzotriazole and 2-hydroxy- 4-n-octyloxybenzophenone. Examples of the plasticizer include: tetraoctyl 4,5-epoxy-hexahydrophthalate, tris(octyloxycarbonylethyl)isocyanurate, tristearin, and epoxidized soybean oil. Examples of the antistatic substance include glycerin monostearate, sodium octadecanoate and sodium dodecylbenzenesulfonate. Examples of the release agent include: octadecyl stearate, beeswax, montan wax, and paraffin wax. Examples of other resins include, but are not limited to, the paper size applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ' 1273593 A7 _________ B7 V. Description of the invention (17) (Please read the notes on the back and fill out this page. ): polypropylene, polystyrene, polymethyl methacrylate and polyphenylene oxide. Any of the foregoing additives is used in any way. Such an additive may be mixed at an appropriate timing during the mixing period of the components for producing the composition. In addition to the polymer and colorant, the composition may optionally include various additives which are generally incorporated into this type of resin composition. Such additives may include: ultraviolet absorbers; stabilizers; such as photothermal stabilizers (eg, acid-based compounds based on trivalent phosphorus); hindered phenols; zinc oxide, zinc sulfide powder or a combination of both; Agent (mineral oil, etc.); plasticizer; antioxidant; antistatic substance tetraalkylammonium sulfonate, tetraalkylphosphonium benzenesulfonate, etc.); release agent pentaerythritol tetrastearate; glyceryl monostearate And so on, and a combination of at least one of the foregoing additives. For example, the substrate may contain: about 0.Olwt% to about 0.1% by weight of a heat stabilizer; about 0.1% to about 0.2% by weight of an antistatic substance; and about 0.1% to about 1% by weight. Release agent (based on the total weight of the polymer). Some of the available antioxidants are printed by the Intellectual Property Office of the Intellectual Property Office of the Ministry of Economic Affairs: organic phosphites such as tris(nonylphenyl) phosphite, tris(2,4-di-tert-butylphenyl) phosphite , bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, distequine pentaerythritol diphosphite, etc.; alkylated monohydric phenols, polyphenols and alkyl groups of polyphenols and dienes Reaction product, such as tetrakis (methyl (3,5-di-tert-butyl-4-hydroxyhydrocinnamate)) methane, 3,5-di-tert-butyl-4-hydroxyhydrocinnamate octadecyl Ester, 2,4-di-tert-butylphenylphosphite, etc.; reaction product of butylated of p-cresol and dicyclopentadiene; alkylated hydroquinone; hydroxylated thiodiphenyl ether; Alkyl diphenol; -21 - This paper scale applies to Chinese National Standard (CNS) A4 specification (210X297 mm) 1273593 A7 __ _ B7 _____ V. Description of invention (18) Benzyl compound; /3 - (3,5- An ester of di-tert-butyl-4-hydroxyphenyl)-propionic acid with a monohydric or polyhydric alcohol; /? - (5-tert-butyl-4-hydroxy-3-methylphenyl)-propionic acid Esters with monohydric or polyhydric alcohols; esters of thioalkyl or thioaryl compounds, such as distearyl thiopropionate, dilauryl thiopropionate, ditridecyl thiodipropionate Etc.; synthesis of at least one of θ - (3,5-di-tert-butyl-4-n-based base) propionic acid and the aforementioned antioxidant. To aid in the processing of the polymer, especially polycarbonate, the catalyst can also be added to an extruder or other mixing device. The catalyst typically helps to control the viscosity of the resulting material. Useful catalysts include: hydroxides such as tetraalkylammonium hydroxide, tetraalkyl scales, etc., preferring diethyldimethylammonium hydroxide and tetrabutylammonium hydroxide. The catalyst can be used alone or in combination with a passivating agent such as phosphoric acid or the like. Additionally, water can be injected into the molten polymer during the dispensing and will exit as a vapor through the vent to remove residual volatile compounds. The polymer is produced by using a tool which can appropriately mix various precursors, such as a single worm type or double worm type extruder, a kneader, a blender, and the like. The polymer is then formed into a substrate by molding, extrusion, rolling, molding or the like. Adjacent substrates are joined together by glue or adhesive such as a separator or adhesive layer. Any adhesive having the desired optical quality can be used. Some useful adhesives include: glue (such as hot melt adhesive), acrylic resin (such as transparent UV curable acrylic resin (that is, prefer to be greater than or equal to ultraviolet curable acrylic resin), etc., and the aforementioned paper scale applies. China National Standard (CNS) A4 Specification (210X297 mm) (Please read the note on the back and fill out this page) - Installation - Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed -22- 1273593 A7 B7 V. Description of Invention ( 19) A combination of at least one of the binders. Along with the binder, the separator layer may contain a transparent material. Some useful separator layers include UV curable transparent resins. Typically, the thickness of the separator (adhesive) layer is near or more than several hundred / / m, the thickness available is less than or equal to about 100 # m, and the current DVD format generally uses a thickness of about 40 / zm to 70 @ m . The color can be added to the DVD in a manner that can be incorporated into any combination of at least one of a substrate (e.g., a resin layer), a separator layer, a top cover, or a layer of the foregoing. The coloring of the disc can be obtained in several ways 'for example, using a pre-colored resin for the substrate and/or the separator, mixing the colorless resin and the color concentrate in the molding machine, and using a liquid or powder coloring method ( Or a combination of at least one of these methods). The colorant is introduced by: adding during the extrusion process, physically mixing the colorless sheet with the color concentrate before molding, or coloring the liquid or powder in the molding machine, the colorant and The concentration is chosen to meet the DVD specifications. Even if a colorant is used, the transparency of the substrate (e.g., greater than or equal to about 60% transparency below the read wavelength) is maintained to obtain a bootstrapable DVD. The transparency of the substrate is directly related to the amount of scattering particles present in the substrate and the size of the particles. If the particle is significantly smaller than the wavelength of visible light, the scattering is not significant. Since the colorant can be the primary source of the scattering particles, it is preferred to filter the colorant, especially the melt filtration process, such as during the addition in extrusion processing. Conveniently, the size of the filtered toner particles (and aggregates of particles) is less than or equal to about 200 nm (please read the notes on the back before refilling this page), and the Ministry of Economic Affairs, Intellectual Property Office, employee consumption cooperative, prints

This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X 297 mm) 23- 1273593 A7 B7 V. Inventive Note (20), the preference is less than or equal to about 50 n m. (Please read the notes on the back and then fill out this page.) Colorants are also preferred to be selected so that the colorant dissolves in the material used to make the layer in which the colorant is disposed. Coloring agents which are soluble in the materials used to make the DVD layer include: dyes (for example, "flux dyes"), organic colorants, pigments, etc., which behave like dyes; that is, colorants dispersed in 'plastics' ( The size of the non-formed aggregates is greater than or equal to about 200 nm, and the size of the preferred aggregates is less than or equal to about 50 nm. Some suitable coloring agents include, but are not limited to, terpenoids, terpenoids, perinones, indanthrones, quinophthalones, azaindoles, oxazines, oxazolines. Class, thiane, anthraquinone, sulfonium, naphthylamine, cyanine, azaindole, indone, lactone, coumarin, dibenzoxazolylthiophene (BB0T), tetracarboxylic acid naphthalene derivatives, monoazo and diazo pigments, triarylmethanes, amine ketones, distyrylbiphenyl derivatives, and at least the above coloring agents a reaction product and a blend. Printed by the Intellectual Property Office of the Ministry of Economic Affairs, the Consumers' Cooperatives. The factors determining the amount of plastic/colorant and the amount of colorant used are based on the above DVD specifications (EMCA Specification No. 267). The light transmission and the concentration of the toner are equalized to obtain the reflectance (about 18% to 30%) of the semi-reflective data layer and the total reflective data layer within the specification of the colored multilayer DVD. The transmittance of the substrate (i.e., half-sheet DVD) under the laser reading laser wavelength is greater than or equal to about 60%. The amount of colorant and the characteristics of the colorant (e.g., the shape of the spectral transmittance curve) depend on the target color and light transmittance. Figure 10 illustrates the different transmittances of some common plastic colorants. This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) -24-1273593 A7 ___B7 V. Invention description (21) (Solvent Videt 13, Solvent Blue 97 and Solvent Green 28). (Please read the note on the back and then fill out this page.) The colorant has a lower absorption coefficient at the desired wavelength (eg 65Onm), so it exhibits maximum transmission at this wavelength. This colorant is Suitable. The selection of a coloring agent having a high absorption coefficient at a desired wavelength limits the maximum amount of colorant that can be obtained for a functional multilayer DVD. Since the coloring agent having a lower absorption coefficient at a desired wavelength can be used in a higher portion in the blend, it becomes easy to obtain a target color in a functional DVD. For example, when trying to reach blue

Solvent Violet 13 is more suitable than Solvent Blue 97 because of its lower absorption coefficient at 650nm. Typically, the amount of the colorant is greater than or equal to about 0.1% by weight, and the preference is greater than or equal to about 0.02% by weight 'more than or equal to about 〇. 〇 4% by weight, more preferably greater than or equal to about 0.4% by weight, most preferred than greater than Or equal to about 0.5 wt% (based on the total weight of the substrate containing the colorant). I prefer to use a coloring agent, the amount of which is less than or equal to about 3.Owt%, more preferably less than or equal to about 2. Owt%, more preferably less than or equal to about 1. 〇wt%, especially preference less than or equal to about 0.75 Wt%. In addition to the reflective layer and the separation layer, the Ministry of Economic Affairs' Intellectual Property Office employee consumption cooperatives can also use layers such as protective layers (such as paint), UV suppression layers, moisture barrier layers, extension layers, etc. Synthesis of at least one of the layers. The present disclosure is further exemplified by the following non-limiting examples. EXAMPLES This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) - 25- 1273593 A7 B7 V. Description of the invention (22) (Please read the note on the back and fill out this page) Comparison of the following examples The ability to bond five colored DVDs and a transparent DVD to the total energy of the substrate in the ultraviolet range. Table 1 lists the details of the blends used. The six blends were blended and made into a sheet at 290 °C in a single worm press. The sheet-form material was molded into a DVD using a standard method, and the disc was tested by a full electronic (Audio Dev DVD Pro SA 300 Pulsetech Drive) and a mechanical (Dr. Schenk PROmeteus MT 136). Table 1 Condensate sample (parts in wt%) AB c D E1 F Polycarbonate resin 100 100 100 100 100 100 Glycerol monostearate 0.03 0.03 0.03 0.03 0.03 0.03 Di(2,4-dicumylphenyl) Diphosphite 0.02 0.02 0.02 0.02 0.02 0.02 Solvent red 52/macrolex red 5B 0.15 0.2 0.3 Solvent Red 207/rosaplast red 601 0.4 Solvent Yellow 93/macrolex yellow 3G 0.05 0.15 0.1 Solvent Violet 36/macrolex violet 3R 0.01

Transparent DVD Ministry of Economic Affairs Intellectual Property Bureau Employees Consumption Cooperative Printed During the molding period, we can see that in the case of only blends B and C, this paper scale applies the Chinese National Standard (CNS) A4 specification (210X297 mm) a 1273593 A7 B7 __ V. INSTRUCTIONS (23) (Please read the notes on the back and fill out this page) The adhesive layer cannot be fully cured. The poor adhesion/adhesion of such two plastic substrates reveals radial and tangential tilts that are not within specification. The measurement of the mechanical parameters indicates that the tangential tilt in all blends is within the specification, but as expected, the radial tilt is not within specifications (only for blends B and C) ). (See Table 2) Table 2 Radial 4 of the disc is oblique and transmittance data sample minimum illumination 1 input / mdeg maximum illumination 1 input / mdeg2 average illumination 1 tilt mdeg % transmittance 2 A -465 195 -3.5 86.67 B -1717 -1567 -1743 83.87 C -1808 -1845 -1467 83.42 D -382 -157 -364 81.96 E -290 -185 -235 87.17 F 101 262 223 82.8 !± 800mdeg Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed 2 in Ray The transmittance curves of the blends A to E across the ultraviolet-visible light region measured by a Hewlett Packard Spectrophotometer Model 8453 (UV-VIS-MIR spectrometer) below the light-emitting wavelength are shown in FIG. These curves can be used to estimate the energy that penetrates the substrate below any wavelength (if the spectral distribution of the illumination source is known). In terms of currency, the Fusion UV system is applicable to the Chinese National Standard (CNS > A4 (210 X297 mm) ~ 1273593 A7 B7 5. Inventive Note (24) D-type bulb illumination distribution (Figure 12) The percentage distribution of incident energy that penetrates each substrate can be obtained (Fig. 13). The ratio of the total energy (obtained by integration) of the substrate that penetrates the substrate to the transparent substrate is made in Table 3 below. Table '3 is a comparison of the total amount of g passing through the optical disk substrate in the wavelength range of about 330 to 410 nm, which is expressed as a function of the percentage of energy penetrating the transparent substrate. In other words, ultraviolet bonding The index was made in Table 3 below. In Table 3, we can see that the blends B and C have only 0.045% of incident light transmission, which is below the threshold level and causes poor adhesion. In other words, blends A, D, and F have been developed to 5.6%, 13.1%, and 49% light transmittance, respectively, and this result is above the threshold level (1%) to provide good adhesion. Read the notes on the back and fill out this page. Ministry of Intellectual Property Office Staff Cooperatives Printed Table 3 The ratio of the energy of the sample penetrating the colored substrate to the energy transmissive to the transparent substrate (%) (UV adhesion index) A 5.6 B 0.044 C 0.046 D 13.1 E 100 F 49

This paper scale applies to the Chinese National Standard (CNS) A4 specification (210 X297 mm) -28 - 1273593

AB V. INSTRUCTIONS (25) (Please read the note on the back and fill out this page.) In addition, when the absorption of the photosensitive starter in the adhesive layer is known, the total energy absorbed by the starter can also be utilized. The calculation is performed by integrating the product of the energy passing through the substrate and the absorbance of the starter. Figure 14 shows the absorption spectrum of Daicure Clear SD-698 (measured in O.lwt% methanol solution, Japan Shimadzu spectrophotometer), which is an acrylic paint used for DVD bonding. The ratio of the total energy absorbed by the photosensitive starter in each of the substrates A-F to the absorbance of the photosensitive starter in the transparent substrate was made in Table 4 below. Table 4 Percentage of total energy absorbed by the sample sensitizer to absorbance in a transparent substrate A 4 B 0.042 C 0.045 D 11.3 E 100 F 49.9 Printed by the Ministry of Economic Affairs, Intellectual Property Office, Employees' Consumption Cooperative, by using a storage medium for glue For the control of the absorbance percentage of the colored substrate used in (for example, DVD), we can develop a strong blend for colored DVDs having good electronic/mechanical properties and good adhesion. An operable disc can be obtained if the absorbance ratio of the photosensitive starter is greater than about 1%. Therefore, the absorbance of the photosensitive starter can be determined. This paper scale applies to Chinese National Standard (CNS) A4 specification (210X297 mm) -29- 1273593 A7 ___B7____ V. Invention description (26) (Please read the note on the back and fill in this page) Then the colorant parameters are adjusted A UV adhesion index greater than or equal to 〇.〇5 is achieved. Useful colorant parameters include a combination of colorant concentration, colorant type, and at least one of the foregoing parameters. The following should be mentioned: For similar colors (that is, samples B, C, and F, which are similar colors to the eye), we get very different UV adhesion indices, where B and C have Poor adhesion, F has good adhesion. It should be further mentioned below that even if the transmission rate of F below the laser wavelength is less than the transmittance of B and C, F can still obtain good adhesion, although the specific example is described by the implementation. Inventors, but those skilled in the art will appreciate that various changes can be made and equivalents can be substituted for the elements of the invention without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention, without departing from the scope of the invention. Therefore, the invention is not to be construed as being limited to the specific embodiments of the invention. Ministry of Economic Affairs Intellectual Property Bureau Employees Consumption Cooperatives Printed Component Number Description 1 3 5 7 9 Bonded Plastic Substrate (or Resin Layer) First Layer Second Layer Read Surface Glue Paper Size Applicable to Chinese National Standard (CNS) A4 Specifications (2i〇X297 mm) -30- 1273593 A7 B7 V. Invention description (27) _ Protective coating or separation layer 11 Label 13 (Please read the note on the back and fill out this page) Ministry of Economic Affairs Intellectual Property Office staff Printed by Consumer Cooperatives -31 - This paper scale applies to China National Standard (CNS) A4 specification (210X 297 mm)

Claims (1)

1273593 A8 B8 C8 D8 VI. Application for Patent Scope Annex 2 A: No. 9 1 1 3 5 1 8 No. 6 Patent Application Replacement of Chinese Patent Application Range 1 (please read the first - «Precautions on the back page and fill in this page) Amendment of July 28, 1999. 1. A method of manufacturing an optical disc comprising: forming a first plastic substrate, the plastic substrate containing greater than or equal to about 0.01% by weight of the coloring agent (based on the first plastic substrate) The total weight of the first substrate of the plastic substrate is controlled to be greater than or equal to about 0.5; a material is placed between the first plastic substrate and the second plastic substrate a layer; bonding the first plastic substrate to the second plastic substrate with an adhesive layer; and curing the adhesive layer. 2. The method of producing an optical disc according to claim 1, wherein the light transmittance through the first plastic substrate is about 60% to 94% or less at a laser reading wavelength. 3. The method of producing an optical disk according to the second aspect of the invention, wherein the light transmittance is from about 70% to about 92%. Printed by the Intellectual Property Office of the Ministry of Economic Affairs, Employees' Consumption Co., Ltd. 4_ The method of manufacturing an optical disc according to claim 3, wherein the light transmittance is about 74% to about 88%. 5. The method of producing an optical disk according to the fourth aspect of the invention, wherein the light transmittance is from about 78% to about 84%. 6. The method of producing an optical disk according to claim 1, wherein the ultraviolet adhesion index is less than or equal to about 7 。. This paper lit financial standard (〇旭) eight 4 specifications (2 297 mm) -: Tr 9Y^3593 A8 B8 C8 D8 #, patent application scope 7. Manufacturing optical discs as claimed in item 6 of the patent scope The method wherein the 3 HAI UV adhesion index is less than or equal to about 6 〇. (Please read the first note on the back side and fill out this page again.) 8. The method of manufacturing an optical disk according to claim 7 of the invention, wherein the 3H ultraviolet bonding index is less than or equal to about 5 。. 9. The method of producing an optical disc of claim 8, wherein the ultraviolet adhesion index is less than or equal to about 40. 10. The method of producing an optical disk according to claim 9, wherein the ultraviolet adhesion index is less than or equal to about 30. 11. The method of producing an optical disk according to the first aspect of the invention, wherein the ultraviolet adhesion index is less than or equal to about 20. A method of producing an optical disk according to claim 11, wherein the ultraviolet adhesion index is less than or equal to about 丨〇. 13. The method of manufacturing an optical disc according to claim 1, wherein the first plastic substrate contains a coloring agent greater than or equal to about 2% by weight based on the total weight of the first plastic substrate. ). Printed by the Ministry of Economic Affairs, Intellectual Property Office, Employees' Consumption Co., Ltd. 1 4. The method of manufacturing an optical disc according to claim 13 wherein the first plastic substrate contains a coloring agent greater than or equal to about 4% by weight (based on The total weight of the first plastic substrate). 15. The method of manufacturing an optical disc according to claim 1, further comprising forming a plastic material from a plastic resin and a coloring agent, wherein the plastic material contains greater than or equal to about 0.01% by weight of a coloring agent (based on The total weight of the plastic material, and wherein the plastic material has the same colorant concentration as the first plastic substrate; and the first plastic substrate is formed from the plastic material. This paper scale applies to the Chinese National Standard (Yangyang) 8 4 specifications (210 father 297 mm) " 1273593 A8 B8 C8 D8 VI. Patent application scope 1. 6. For the method of manufacturing optical discs according to the first application of patent scope, It further comprises forming a first plastic substrate from a plastic resin, wherein the plastic resin contains a different colorant concentration than the first plastic substrate. 17. The method of producing an optical disk according to claim 1, further comprising determining an absorbance of the photoinitiator in the adhesive layer, and adjusting a parameter of the colorant to achieve a UV adhesion index greater than or equal to About 1 · 〇 ' wherein the parameter is selected from the group consisting of a colorant concentration, a colorant type, and a combination comprising at least one of the above parameters. 18. A method of manufacturing an optical disc comprising: forming a plastic material from a plastic resin and a coloring agent, wherein the plastic material contains a coloring agent greater than or equal to about 0.1% by weight based on the total weight of the plastic material. Forming a first plastic substrate from the plastic material, wherein the first plastic substrate has a UV Bonding Index of greater than or equal to about 0.5, and wherein the plastic material has a first plastic substrate The same colorant concentration; a data layer is disposed between the first plastic substrate and the second plastic substrate; the first plastic substrate is bonded to the second plastic substrate by an adhesive layer; The adhesive layer is cured. A method of producing an optical disk according to claim 18, wherein the ultraviolet adhesion index is less than or equal to about 40. 20·If you apply for the method of manufacturing optical discs in the scope of patent application No. 19, the paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ΓΤΓ -n . - J - n ..... — I ! (Please read the precautions on the back and fill out this page.) Order d Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed ^273593 A8 B8 C8 D8 ___ VI. In the scope of patent application, the external index of 5 糸 糸 is less than or equal to Around 30. (Please read the note on the back side and then fill out this page.) 21 The method of manufacturing an optical disk according to the second aspect of the invention, wherein the ultraviolet adhesion index is less than or equal to about 20. 22. The method of producing an optical disk according to claim 21, wherein the ultraviolet adhesion index is less than or equal to about 10. An optical disc comprising: at least two plastic substrates (1) comprising an adhesive layer and a data layer disposed therebetween, wherein at least one of the plastic substrates (1) is a read surface substrate And a coloring agent containing greater than or equal to about 0.1% by weight based on the total weight of the read surface substrate, and wherein the read surface substrate has a UV adhesion index of greater than or equal to about 0.5. 24. The optical disc of claim 23, wherein the optical disc is selected from the group consisting of: DVD 5, DVD 9, DVD 10, DVD 14 and DVD 18. The optical disc of claim 23, wherein the light transmittance through the reading surface substrate at a laser reading wavelength is about 60% to 94% or less. Printed by the Intellectual Property Office of the Ministry of Economic Affairs, Employees' Consumption Cooperatives 26_ For example, the optical disc of the 25th patent application area has a light transmittance of about 70% to about 92%. 27. The optical disc of claim 26, wherein the light transmission is from about 74% to about 88%. 2 8. The optical disc of claim 27, wherein the light transmittance is from about 78% to about 84%. 29. For example, the optical disc of the 23rd patent application scope, wherein the reading surface paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -7^1 * ~ " r paste 35颂) A8 B8 C8 D8 Six' Patent Range The thickness of the substrate is from about 0.4 mm to about 1 mm. 30. The optical disc of claim 23, wherein the ultraviolet adhesion index is less than or equal to about 7 。. 31. The optical disc of claim 3, wherein the ultraviolet adhesion index is less than or equal to about 60. 3. 2. The optical disc of claim 31, wherein the ultraviolet adhesion index is less than or equal to about 50. 33. The optical disc of claim 32, wherein the ultraviolet adhesion index is less than or equal to about 40. 34. The optical disc of claim 33, wherein the ultraviolet adhesion index is less than or equal to about 30. 35. The optical disc of claim 34, wherein the ultraviolet adhesion index is less than or equal to about 20. 36. The optical disc of claim 35, wherein the ultraviolet adhesion index is less than or equal to about 10%. 37. The optical disc of claim 23, wherein the plastic is selected from the group consisting of: amorphous thermoplastic, crystalline thermosetting plastic, semi-crystalline thermoplastic, semi-crystalline a thermosetting plastic, and a blend, a copolymer, a reaction product and a composite comprising at least one of the above plastics. 8. The optical disc of claim 37, wherein the plastic is selected from the following Group consisting of polyether oximines, polyetheretherketones, polyimines, polyvinyl chlorides, polyolefins, polyesters, polyamines, poly-types, poly-imines, Polyether phthalimide, polyether master, polyphenylene sulfide This paper standard national standard (CNS) A4 specification (210x297 public love ^) ~7571 one (please read the back of the note before you fill this page j Ordered by the Ministry of Economic Affairs, Intellectual Property Bureau, Staff and Consumers Co., Ltd. Printed A8 B8 C8 D8 VI. Application for patent scope (please read the note on the back and fill in this page), polyether ketones, polyetheretherketones 'ABS resin' Phenyl benzene suspected 'polybutadiene, polyacrylate, polyacrylonitrile' polycondensation Acid 'polyphenylene _ 'ethylene-vinyl acetate copolymer 'polyvinyl acetate 'liquid crystal polymer class' ethylene-tetrafluoroethylene copolymer, aromatic polyester 'polyvinyl fluoride' polyvinylidene fluoride, poly bias Dichloroethylene 'tetrafluoroethylene fluorocarbon copolymer' epoxy polymer, phenolic resin, alkyd resin, polyester, polyimide, ethyl urethane, polyoxyalkylene, polydecane, double Maleic imines, cyanate esters, vinyl resins, benzocyclobutene resins, and blends, copolymers, and complexes containing at least one of the above plastics. Printed by the Property Bureau Staff Consumer Cooperatives 39. For example, the disc of the patent application category 23, wherein the colorant is selected from the group consisting of cockroaches, mites, pennones, and yin Indanthrones, qumacridones, xanthenes, ο X azines, thioxanthenes, genus, sulfur, naphthalene Formamide, cyanine, azaindole, artemis , lactones, coumarins, dibenzoxazolylthiophenes (BBOT), tetracarboxylic acid naphthalene derivatives, monoazo and diazo pigments, triarylmethanes, amine ketones, stilbene a phenyl derivative, and a reaction product and a blend containing at least one of the above colorants. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) _ 6 ·