TW201007726A - Optical data recording media - Google Patents

Abstract

An optical data recording medium includes a substrate, and a dye coating established on the substrate. The dye coating including an absorber having a light absorption maxima at a first waveband, and a contrast agent having a light absorption maxima at a second waveband that is at least 100 nm apart from the first waveband. The medium is configured to exhibit a reflectivity greater than or equal to 45% and a push pull signal (PPa) at the second waveband equal to or less than 0.4.

Description

201007726 VI. Description of the invention: [Technical field to which the sun and the moon belong] The present invention relates to an optical data recording medium. C Prior Art 4 Chairs; 3 BACKGROUND OF THE INVENTION Materials for producing color and/or contrast changes after stimulation with radiation are used in optical recording and imaging media and devices. Furthermore, due to the widespread adoption and rapid development of technologies related to optical recording and video media, there has been a demand for greatly increasing the data storage capacity in this media. As a result, optical storage technologies have evolved from compact discs (CDs) and compact discs (LDs) to extremely dense data types such as digital versatile discs (DVDs) and blue lasers (such as BLU-RAY) and high-density DVDs (such as BLU-RAY). HD-DVD). "BLU-RAY" is the trademark of BLU-RAY, Inc. of Essex, and "BLU-RAY Disk" is Sony Corporation of Tokyo, Japan (s〇ny Kabushiki A trademark of Kaisha Corp.). According to an embodiment of the present invention, an optical data recording medium comprising a substrate; and a dye coating formed on the substrate, the dye coating comprising a first wave An absorbent having a maximum light absorption at the belt and a contrast agent having a maximum light absorption at a second wave band at least 100 nanometers away from the first waveband; wherein the media is configured to have a reflectivity greater than or equal to 45% and the push-pull signal (ppa) at the second band is equal to or less than 0.4. According to another embodiment of the present invention, a method for at least the following three functions of 201007026 is specifically proposed: i) optical data or visual image on an optical data recording medium; or u) from a - optical (four) recording medium Reading light wind, recording data, or visual image; the method includes illuminating i) the first band of light from the light source to cause the absorber to capture energy that the energy is transferred to the pair of agents to form on the optical data recording _ Optically readable; or 11) light from a second band of the light source to optically read a mark previously formed on the optical data recording medium. In accordance with still another embodiment of the present invention, a method for fabricating an optical data recording medium is specifically provided, the method comprising: establishing the enamel dye coating on the substrate, and configuring the structure of the medium such that the medium Reflective and push-pull signal (PPa) at the second band. According to still another embodiment of the present invention, there is provided a system for recording * or reading at least one of optical data or visual images, comprising an optical data recording medium wherein the medium comprises a substrate and a substrate a dye coating on the substrate, wherein the dye coating comprises an absorber having a maximum light absorption at the first wave band and a second wave band at least a nanometer away from the first wave band a contrast agent having maximum light absorption, wherein the medium® is configured to have a reflectivity greater than or equal to 45% and a push-pull signal (PPa) at the second wavelength band equal to or less than 〇.4; At least one of a recording device or a reading device that illuminates a light source of the recording medium, wherein the light source emits at least one of the following: i) light of the first wave band, thereby causing the absorbent to capture energy and transfer the energy to The contrast agent is used to form a mark that can be optically read using a second band of light; or ii) the light of the second band, thus reading a mark that has previously been formed on the dye coating. 4 201007726 Brief Description of the Drawings The detailed description of the present disclosure and the reference numerals of (4)'s similar reference numerals are used to refer to the similar (though perhaps not identical) components. For the sake of brevity, reference numerals or features having the function of the description may be described or not described in other figures in which they are shown. β Fig. 1 is a half-diagram perspective view and a block diagram of a specific example of a disc recording system; Fig. 2 is a cross-sectional view of a specific example of the recording medium shown, and associated with A partial block diagram of some of the sections of the system shown in Fig. 1; _ 'Fig. 3 is a perspective view of another specific example of the recording medium. Detailed Description of the Preferred Embodiments A specific example of the optical recording/reading medium disclosed herein is a write-once disc. The data is written using wavelengths from the first band, which can be read away from the second band of the first band with at least 1 nanometer. It is important to understand the choice of dye system (including absorbers and contrast agents) and disc structure so that the characteristics of the media are within the desired DVD specifications. For example, the disc can be configured to have a form similar to the DVD-R format or the DVD+R format, where they can be written in one wavelength/waveband and can be read in another wavelength/band. The media disclosed herein is suitable for the use of on-demand manufacturing (MOD) applications. Certain names are used throughout the description of the specific system components and the scope of the patent application. As will be appreciated by those skilled in the art, different companies may indicate that special components are indicated by different names. This document is not intended to distinguish between different components of a name (not a function). Reference is made to the BLU-RAY technology. The disc specifications for BLU-RAY discs now include the following: Wavelength = 405 nm 'Numerical aperture (NA) = 〇 85, disc diameter = 12 cm, disc thickness = 1.2 mm and data capacity 223 3/25/27 GB. BLU-RAY discs can now be used to store 2 hours of high resolution recorded images or 13 hours of conventional video images. The blue-violet laser has a wavelength between 380 nm and 420 nm, especially using 4〇5 nm as the light source for the bLU_ray disc. Another technique for using blue light (380 nm to 420 nm radiation) is HD-DVD and Ultra Density Optical (UDO) discs. As used herein, the designation "waveband,", "absorption band," or "band," refers to a light frequency, radiation, and/or absorption of ±30 nm from the stated value. For example, 405 nm Wavebands include wavelengths ranging from 375 nm to 435 nm, and 650 nm bands include wavelengths ranging from 620 nm to 680 nm. When a band is at least 100 nm away from another band, The maximum absorption wavelength of a band (for example, the 405 nm wavelength of the 405 nm band) is at least ® nm away from the maximum absorption wavelength of other bands (for example, the 650 nm wavelength of the 650 nm band). The name wavelength "generally refers to the value described. However, when discussing the wavelength of a laser emitter, the name "wavelength" includes the described value ± 5 nm. The systems disclosed herein may be at least partially defined by the bands. In one specific example, Using the wavelength of the first defined band to write the data, and using the wavelength of the first defined band (which is at least 100 nm from the first band) to read the data. It is understood that the color can be used to indicate Media and System 6 201007726 Waves. For example, the use of 4〇5nm "blue" in this article, brought to the media and 65G nano "red" to bring the media to read the media can refer to For "write blue - read red" '. As used herein, the name "contrast agent" is defined as any substance (and absorption that will result in a contrast in the desired reading band due to physical or chemical changes). Agent related). The contrast agent can be a colorless (leu(3)) dye or a combination of a leuco dye and a developer/developer precursor. • As used herein, the name “absorber,” is described as a type that absorbs the pre-twist wavelength or wavelength range (ie, the band) and transfers the absorbed energy to the counter-specific agent, thus causing the contrast agent to change its a chemical and/or physical structure that produces a substance that can be optically detected. In some instances, the absorber functions as a 'chromic dye of the selected leuco dye. As used herein, "a leuco dye, By means of a color or contrast-forming substance that is colorless or has a contrast in the non-activated state and which produces or changes contrast in the activated state. As used herein, the name "developer and activator" is described as a substance that reacts with a dye and causes the dye to change its chemical structure and change or obtain a color. As used herein, the name "light" includes Electromagnetic radiation of any wavelength or with and from any source. The recording medium 1 显示 (shown in Figures 1-3) disclosed herein can be used to record optical or visual images in a first band and then when exposed to a beam within the second band. Can be read. Media 100 is typically reflective or transmissive. In one embodiment, the medium 100 is reflective and will be read using a reflected beam accordingly. For the use of reflective media 100, display 7 201007726 The system used to write and/or read data in Figure 1 includes an optical component 148, a light source 150 that produces an incident energy beam 152, and a detector or optical sensing. The reflected beam 154 detected by the device 157. Furthermore, for a transmissive medium 1 (as indicated by the hash line in Figure 1), the system can include a lens or optical system 600 for use by the upper detector 158 (not The limited embodiment is a photodetector to detect the transmitted beam 156, which also analyzes the presence of the signal reagent. It is to be understood that Figure 2 shows a simplified block diagram of a read/write system 17 which illustrates the same optical components as those shown in Figure 1. Figure 1 also depicts a cylindrical lens 159 that is typically used for astigmatic focusing. The reflected beam 154 will focus (or converge) to different points as the disc position moves closer to or away from the optical element in the vertical direction. The cylindrical lens 159 further causes the bundle 154 to converge faster along one axis than the other. This causes the shape of the light intensity on the photodetector 157 to change shape and become somewhat elliptical as the surface of the disc 100 moves vertically closer to or away from the optical element. The focus beam 152 can be generated by dividing the photodetector 丨 57 into four quadrants and comparing the four quadrants so that the laser beam 152 remains focused on the disc 1 而. In some embodiments, system 17 includes a write wavelength (eg, those within a 4 〇 5 nm band) when desired and a read wavelength when desired ( For example, a light source 150 of those wavelengths within the (four) nanowave band. In other embodiments, system 17A includes a source 150 that emits a write wavelength and a separate system 17 (which includes a source 15 that emits a read wavelength). The separate write and read system 170 is particularly suitable for the media 100 disclosed herein. 201007726 FIG. 1 also illustrates a drive motor 162 and a controller 164 for controlling the rotation of the optical disc/image medium 100. The fingerprint/debt flag can be read by an optical sensor (e.g., optical detector 157) (shown as 242 in Figure 2). An inductor (e.g., optical detector 157) is configured to detect at least one readable pattern of the optically detectable indicia 242 on the media. Generally, the sensor reads the marker 242 as the media moves relative to the sensor. The laser beam of the sensor is focused on the marked surface and detects changes in the reflected beam. The sensor converts the signal from optical detection mark 242 and converts it into one or more electrical signals that can be sent to processor 166. Processor 166 and analyzer 168 can be implemented together or alternatively to process return beam 154 and a signal 165 from optical sensor 157 (such as a photodetector) to processor 166. In some embodiments, processor 166 and/or analyzer 168 processes a signal 163 transmitted from optical detector 158 from transmission beam 156. A display monitor 114 is also provided to display the processing results (generally in the form of data). The system may also include a computer database (no display) that collects and stores data processed/analyzed for subsequent retrieval. The signal 165 from the optical sensor 157 can be used to detect the recording mark 242 or a plurality of tracking signals (such as push-pull signals) on the medium 100. The push-pull signal derives the difference in the electrical signal between the two sides of the optical sensor by tangentially separating the optical sensor into at least two equal parts. The structure of the ridges and grooves G (shown in Figure 2) on the medium 100 causes the reflected light to be diffracted. When the focused light moves radially through the way, the diffracted light has a different amount of phase interference with respect to the primary reflected light between the two sides. The push-pull signal is used to maintain radial tracking and can also be used to detect and read the 9 201007726 person variable (which can include a variety of messages, such as form data or speed messages) in the groove G (or ridge). Figure 2 shows a simplified block diagram of the read/write system 17A, which illustrates some of the same optical components as shown in Figure 1. In particular, Figure 2 illustrates that the read/write system 17 applies a human-fired energy beam 152 to 100. Specific examples of the dye medium 100 include a substrate 220 and a dye coating 23 on its surface 222. In a specific example (as shown in Figure 2), the reflective layer 231 is established directly adjacent to the substrate 220, and the dye coating 23 is formed on the reflective layer 231 and is established between the dye coating 23 and the optical beam 11 A cover or protective layer 234 is covered. This protective layer 234 is generally known which allows writing to the coating 230 and reading the indicia 242 while protecting the coating 23 from scratches, soiling, and the like. - To understand that other specific examples of media 100 do not include protection layer 234. Again, -

In other embodiments, the reflective layer 231 may be absent; and in such specific embodiments of the reflective disc 100, the dye provides varying degrees of reflectivity between the indicia 242 of the dye coating 230 and the unrecorded areas. Furthermore, the reflective layer 231 may be absent and the substrate 220 may be optically transparent to allow detection of the indicia 242 on the side of the disc 100 opposite the incoming beam 11''. In a specific example including the reflective layer 231, it is to be understood that the reflective layer 231 may be composed of a substance having a high reflection coefficient with respect to laser light, such as, for example, Mg,

Se, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Μη, Re,

Fe, Co, Ni, Ru, Rh, Pd, Ir, Pt, Cu, Ag, Au, Zn,

Cd, Abu Ca, In, Si, Ge, Te, Pb, P〇, Sn, Si, and/or Nd. In a non-limiting embodiment, the reflective layer 231 is formed of Ag, Au, or A1. Again, it is to be understood that each of the reflector materials can be used alone, as a mixture or as an alloy such as 10 201007726. In still other embodiments (shown in Figure 3), other layers 236 (such as buffer layers) may be created between the coating 23" and the protective layer 234. Alternatively or in addition to the buffer layer 236 between the coating 230 and the protective layer 234, a buffer layer may be present between the coating 23 and the reflective layer 231. Non-limiting embodiments of suitable buffer layers include dielectric materials that are capable of passing a desired wavelength therethrough. The layers 230' 23i, 234 and 236 can be established by any desired technique including, but not limited to, roll coating, spin coating, spray, lithography, money shot, steaming Or stencil printing. It is to be understood that the characteristics of the selected media 100 and the dyes comprising the dye coating 230 are such that the resulting media 100 is configured to be writeable at one time and to provide a signal level similar to a read-only medium after recording to allow the transmission to The medium 100 is recognized as a read only memory (ROM) disc. Furthermore, the composition of the dye coating 230 can be adjusted to allow a 405 nm band (blue) laser to be used in dyes often recorded in a 650 nm band (red) laser at 650 Nai. Optical contrast is produced at the meter wave band. The blue laser recording improves the I14/I14H modulation and stability of the recorded data (i.e., the mark 242) without adversely affecting the push-pull, reflectivity, and other properties of the medium 100. The improved modulation of the Xianxin and the adjusted structural features (eg, reflectivity, groove depth D) provide that the media 100 can record data once at the 405 nm band and can be used in a standard DVD player ( If the mark 242 has been read using a standard red laser record). Further, the push-pull signal at the read waveband (for example, the 650 nm band) is improved in recording and playback in a legacy DVD player and recorder. It is to be understood that for the dyes provided, the refractory properties of one or more of the layers 230, 234, 236 in the media 11 201007726 100 are adjusted, for example, via the thickness of the reflective layer, the reflective material used, the reflective material Concentration, etc.), adjusting the depth 沟槽 of the groove G in the substrate 220 (shown in FIG. 2), adjusting the width of the groove 、, adjusting the corner of the groove G, adjusting the thickness of the dye coating 230, and adjusting the filling The amount of dye coating 230 entering each of the grooves G, the concentration of the dye within the coating 230, and/or combinations thereof to control reflectivity and push-pull. The substrate 220 of the media 100 can be any substrate on which the indicia 242 is desired to be made, such as, for example, in conventional CD-R/RW/ROM, DVD-R/RW/ROM, HD-DVD or Blu-ray discs. The polymeric substrate used. The substrate 220 can be paper (e.g., a sticker, ticket, receipt, or stationery), a slide, or another surface on which the indicia 242 is desired to be recorded. Substrate 220 includes one or more trenches G formed therein. In a specific example, a plurality of concentric grooves G are formed in the substrate 220. In another embodiment, a single spiral groove G extending from the inner diameter to the outer diameter is formed in the substrate 220. In yet another embodiment, a combination of concentric and spiral grooves G is formed in the substrate 220 (e.g., a plurality of separate spiral grooves G are formed in the substrate 220). It is to be understood that the depth D and/or width of the trench G can be varied to obtain the desired push-pull signal after recording or at the read wavelength/band. For a form similar to the DVD-R form, you want to push the signal to the young 3; and for a form similar to the DVD+R form, you want to push the signal to cut .4. It will be appreciated that this push-pull signal can be obtained when the groove depth D is less than 170 nm (in combination with other structural features disclosed herein). In another non-limiting embodiment, the groove depth D ranges from about 130 nm to about 150 nm. To obtain push-pull < 0.2, the depth D of the trench G can range from about 11 nanometers to about 145 nanometers. As mentioned in the previous 12 201007726, it is also believed that the narrow groove geometry can assist in obtaining the desired push-pull after the degree of writing. As a non-limiting embodiment, the groove G width may be < 35 奈 nanometers or may range from about 200 nanometers to about 300 nanometers. For its part, the combination of the dye composition, the depth 〇 of the trench G and/or the width of the trench G can optimize the push-pull and modulation values to any desired degree. In order to obtain push-pull <〇.1 after recording, it is understood that different groove G geometries (e.g., depth 〇 and/or width) can be used in combination with the dye. φ As described in detail below, the dye coating 230 includes a matrix or an adhesive that has been suspended, dissolved, or finely dispersed (eg, a polymer matrix including, for example, poly' acrylate, polystyrene, polyene, or polycarbonate). The color is formed or - contrast agent 240 and absorbent 239. In some instances, contrast agent 240 and absorbent 239 are completely soluble in the coating matrix or adhesive. In one embodiment, the dye coating 230 also contains a fixative (not shown). Generally, the matrix material can be any composition suitable for dissolving and/or dispersing the absorbent 239 and the contrast agent 240. Acceptable matrix materials include, but are not limited to, UV curable substrates such as acrylic acid. Ester derivatives, oligomers and precursors (with or without ph〇t〇package). The light component may comprise a light absorbing species capable of initiating a reaction for hardening the matrix, such as, for example, a 'diphenyl ketone derivative ο other embodiment of a photoinitiator for radically polymerizing monomers and prepolymers. These include, but are not limited to, thioxanthone derivatives, anthraquinone derivatives, acetophenones, and benzoin shatter patterns. In addition to the radiation pattern used to write, it is desirable to select a form of radiation that can be used to harden the substrate. A base mainly composed of a cationic polymer resin may require an aromatic diazonium salt, an aromatic salt, an aromatic salt, and a metallocene compound as a starting agent. Examples of acceptable substrates include Nor-Cote CLCDG-1250A or Nobeltek CDGOO(R), a mixture of acrylate monomer and polymer that can be cured, comprising a photoinitiator ( A hydroxy ketone) with an acrylate organic solvent (for example, decyl methacrylate, hexyl methacrylate, styrene-phenoxyethyl acrylate and cyclohexyl acrylate). Other acceptable matrices include acrylated polyester sorbents such as CN292, CN293, CN294, SR351 available from Sartomer Co. (tripropionate dimethoprim) ), SR395 (acrylic acid) and ?R256 (2-(2-ethoxyethoxy)ethyl acrylate). ® In some instances, when the temperature of the solid substrate is below its glass transition temperature, the photochemical and/or photothermal mechanism (discussed further below) that causes the developer precursor to become a developer is slower. Without appreciating the particular theory, the photochemical reaction in the solid has an added energy barrier to heat the substrate above its glass transition temperature (Tg). Thus, in some embodiments, it is preferred to provide sufficient photothermal energy in the region of the desired indicia 242 to locally heat the substrate above its glass transition temperature Tg. The Tg is typically determined by the polymer composition of the substrate and, if desired, by the choice of a polymer that is cold to the substrate. In some embodiments, the range of \ will range from about 120 ° C to about 3 Torr. (: In many embodiments, it is desirable for the dye coating 230 to have a thickness equal to or less than 100 nanometers. To achieve this, the spin coating method is a coating suitable for establishing a coating 23 on the substrate 220. In addition, it is desirable to provide a dye composition capable of forming a coating 230 having a thickness of 100 nm or less. In this example, the dye coating 230, in particular, should have no thickness profile 14 201007726. The particles, i.e., have no particles having a size greater than 100 nanometers. In some instances, the composition of the coating 230 can be in a complete solution, thus producing a molecular degree of film agglomeration. Furthermore, in many applications, it is desirable A transparent dye coating 230 is provided. In this example, any particles present in the coating 230 will have an average size less than half the wavelength of light that is transparent to the coating. Although a total particle size will be provided for this purpose. 150 nm of coating 230, but more desirable to use a coating 23 that has been dissolved (as opposed to the presence of particles). Again, 'when the density of the target data increases, it can be used for data recording. Point size or mark size is reduced. Some currently available techniques require an average dot size of 150 nm or less. For all of these reasons, it is desirable to have a dye coating 230 that is completely incomparable to the half wavelength of the written radiation. The dye coating 230 comprises an absorbent dye 239 and a contrast agent 240 selected to achieve the desired modulation of the recorded data/marker 242 (i.e., greater than or equal to 0.6). As previously mentioned, The combination of absorber 239/contrast 24 能够 enables media 100 to be written at one wavelength or band, which produces one at another wavelength or band (which is at least 1 远离 away from the writing wavelength or band) The mark 242 that is read under the meter. When the mark 242 is desired to be made, the mark energy ι10 is directed to the medium 100 in a desired manner. The form of the energy may vary depending on the available equipment, surrounding conditions, and desired results. Non-limiting embodiments of energy that may be used include, but are not limited to, blue light (38 nanometers - 42 nanometer radiation). In these specific examples, at the location where the indicia 242 is desired to have The desired write wavelength (or The light written into the waveband illuminates the medium. The absorption 15 in the marking layer 23〇 201007726 agent 239 absorbs the energy, and causes some physical and/or chemical changes in the contrast agent 24〇 to produce The optically read mark 242 of the two wavelengths (or within the read band). It is to be understood that the generated mark 242 can be detected by an optical sensor that emits the read wavelength or band. To understand the color formation Or contrast agent 240 can be any substance that is capable of undergoing a detectable optical change in response to a threshold stimulus, which is typically the energy received from absorbent 239. In some embodiments, the contrast agent 24 includes a leuco dye. And a developer (which may also act as absorbent 239) as described in detail below. The developer and leuco dye produce a detectable optical change when chemically mixed. In general, the concentration and distribution of the contrast agent 24 染料 in the dye coating 23 为 is preferably sufficient to produce the detectable label 242 when activated. In the specific example where the dye coating 230 comprises a developer and a leuco dye, the two components are soluble in the matrix. In other embodiments, one of the components may be suspended in a matrix such as a distributed particle, but a uniform coating is preferred. In the dye coating 230 in which both the developer and the leuco dye are dissolved, it is desirable to prevent premature bonding of the components and optical changes throughout the overall marking layer 230. This can be achieved by incorporating one of the components of contrast agent 240 (e.g., its component precursor) in dye coating 230. In these specific examples, incident light or heat triggers a chemical change in the precursor causing it to become the desired component. Once the desired component is formed, the two components will locally exist and contrast will form a reaction. Thus, an optically detectable mark 242 can be produced if the energy of the write wavelength/band is applied to the desired area of the mark layer 230. In the present application, this is achieved by using a developer precursor in close proximity to the dye tight 16 201007726 in the dye coating 230. The developer precursor is activated as a color developing enthalpy until it has absorbed a stimulus that would cause its chemical rearrangement. In this connection, the developer precursor can also function as the absorbent 239. After rearrangement here, it acts as a developer when it comes into contact with the dye. In this connection, the substrate provides a homogeneous, single-phase solution under ambient conditions because the off-color precursor is arrested for color formation/contrast reactions prior to activation.

In still other embodiments, one or the other of the components may be substantially insoluble in the matrix under ambient conditions. "Substantially insoluble, meaning that the solubility of the components of the contrast agent 240 under conditions in the base f is so low, which causes the reaction of the dye and the agent under the conditions to occur or a very slight contrast change. Therefore, in some specific examples, under ambient conditions, the developer is dissolved in the matrix and the dye appears to be suspended in the matrix as small crystals; while in other specific conditions, the dye is dissolved in the substrate towel. (4) The color charm is as follows], the crystal m floats on the base towel. The particle size is preferably less than 150 nm. Depending on the selected contrast agent, the label composition can be activated after the desired wavelength / The filaments become relatively more or less absorbed. Ben 1 =; found in the purpose of the collection of 9 (the absorption, in order to write in the first wavelength from 380 nm to 420 nm) and comparison Agent: wide write wavelength / wave band at least 1 〇〇 nanometer wavelength / band absorbable and readable) and produce optically detectable mark to improve the _ material / mark ice adjustment 'This read band wavelength includes Chanai 17 201007726 when reading these materials or images 'they are not The reading is performed using the same optical wavelength as the writing process, which causes the contrast agent 24 〇 change. Therefore, the chance of the reading process changing to the result of the writing process is substantially reduced or eliminated. This is written in high precision data. It is especially useful and important. It is easy to write and read under different wavelengths of suction, which can achieve better control and higher range in data writing and reading. At or near 405 nm (for example, from Non-limiting examples of absorbent 239 absorbed at about 375 nm to about 435 nm include curcumin, safranin, acid, and derivatives thereof, for example, from Frontier Science (Fr 〇ntia ginseng

Scientific) purchased purple color 1 (CAS 448_71_5), octaethyl yellow (CAS 2683-82-1) and ruthenium IX 2,4 diethylene glycol (ο630·9); azo dye, - For example, Mordant Orange (CAS 2243-76-7), methyl 'Yellow (CAS 60-11-7), 4-phenylazobenzene (CAS 60-09-3) and Elson Alcian Yellow (CAS 61968-76-1); CI Solvent Yellow 93, CI Solvent Yellow 163; 1,3-Dimercapto-5-[2-(l-methyl-pyrrolidine-2-ylidene) )-Ethylene]-pyrimidine-2,4,6-trione, 1,3-dimethyl-5-[2-(3-methyl-oxazolidine-2-phenylene)-ethylene] -03⁄4 bites-2,4,6-trione; or an analogue thereof. Still other suitable embodiments include 1-(2-a-5-sulfophenyl)-3-methyl-4-(4-sulfophenyl)azo-2-pyrazolin-5-one disodium salt (Xmax=400 nm); 7-diethylamino coumarin-3-carboxylic acid ethyl ester (λ_=418 nm) (CAS 28705-46-6); 3,3'-diethyl sulphide Anthocyanin ethyl sulfate (Xmax = 424 nm) (CAS 26〇2-17-7); 3-allyl-5-(3-ethyl-4-methyl-2- yamole Lynn) Rhodamine (Xmax = 430 nm) (CAS 203785-75-5) (each of which is available from Wolfen's Organica Feinchemie GmbH) or It mixes 18 201007726 compound. Non-limiting specific examples of suitable aluminum quinoline complexes that can be used as absorbent 239 include tris(8-hydroxyquinoline)aluminum (CAS 2085-33-8) and derivatives such as tris(5- Gas-8-hydroxyquinoline)aluminum (CAS 4154-66-1); 2-(4-(1-methyl-ethyl)-phenyl)-6-phenyl-4H-indole-4- Subunit)-propanedicarbonitrile-1,1-dioxide (CAS 174493-15-3); 4,4,-[1,4-phenylenebis(1,3,4-oxooxadiazole) -5,2-diyl)] biguanide, fluorene-diphenylaniline (CAS 184101-38-0); bis-tetraethylammonium-bis(1,2-dicyanodi-dithiolane) )__ (IIXCAS 21312-70-9); or 2-(4,5-dihydronaphtho[l,2-d]-l,3-dithiol-2-yl)- 4,5-Dihydro-naphtho[l,2-d]l,3-dithiol, all of which are commercially available from Syntec GmbH. As previously mentioned, in some examples, contrast agent 240 comprises a leuco dye and a developer precursor (which may be absorbent 239). Non-limiting examples of dye coating 230 having leuco dye contrast agent 240 and developer precursor absorber 239 include curcumin diacetate (absorbent 239) for use in the 405 nm tape writing process and At the 650 nm reading process, Noveon Specialty Cyan 39 (Contrast 240). Particular examples of other suitable leuco dyes include fluorans and ugly lactones including, but not limited to, the following (which may be used alone or in combination): stupid-6-(N-ethyl-N- Methylamino) fluoran, 1,2-benzo-6-(N-fluorenyl-N-cyclohexylamino) fluoran, 1,2-benzo-6-dibutylamino fluoran, ι , 2-benzo-ethylaminopyrene, 2-(α-phenylethylamino)-6-(N-ethyl-p-indolyl) fluoran, 2-(2,3- Di-anilino)-3-chloro-6-diethylaminopyrene, 2-(2,4-dimethylanilino)-3-methyl-6-diethylamino fluoran, 2 -(di-p-methylphenylbenzhydryl)-6-(N-ethyl-p-indolyl) fluoran, 2_(between_ 19 201007726 trichlorononylanilide)-3-A -6-(N-cyclohexyl-N-methylamino) fluoran, 2-(m-trichloromethylanilino)-3-indolyl-6-diethylamino fluoran, 2- (m-Trifluorodecyl phenylamine)-6-diethylamino fluoran, 2-(m-trifluoromethylanilino)-3- gas-6-diethylamino fluoran, 2-( m-Trifluoromethylanilino)-3-methyl-6-diethylamino fluorane, 2-(N-ethyl-p-nonylanilino)-3-methyl-6-(N- Ethylanilinyl ) fluorin, 2-(N-ethyl-p-nonylanilino)-3-methyl-6-(N-propyl-p-toluidine) fluoran, 2-(o-chloroanilino) 3-chloro-6-diethylamino fluorane, 2-(o-chloroanilino)-6-dibutylamino fluorane, 2-(o-o-anilino)-6-diethyl Amino fluorane, 2-(p-acetylhydrazino)-6-(N-n-pentyl-N-n-butylamino) fluoran, 2,3-dimethyl-6-dimethyl Amino fluorane, 2-amino-6-(N-ethyl-2,4-dimethylanilino) fluorane, 2-amino-6-(N-ethylanilino) fluoran, 2 -Amino-6-(N-ethyl-p-anilide) fluoran, 2-amino-6-(N-ethyl-p-ethylanilino) fluoran, 2-amino-6 -(N-ethyl-p-toluidine) fluoran, 2-amino-6-(N-methyl-2,4-dimethylanilino) fluoran, 2-amino-6-( N-nonylanilino) fluoran, 2-amino-6-(N-fluorenyl-p-halanilidene) fluorane, 2-amino-6-(N-mercapto-p-ethylaniline , fluorinated, 2-amino-6-(N-methyl-p-tolylamino) fluoran, 2-amino-6-(N-propyl-2,4-dimethylanilino) Fluorane, 2-amino-6-(N-propylanilino) fluorane, 2-amino-6-(N-propyl-p-haloanilino) fluoran, 2-amine -6-(N-propyl-p-ethylanilino) fluoran, 2-amino-6-(N-propyl-p-toluidine) fluoran, 2-anilino-3-chloro -6-diethylamino fluorane, 2-anilino-3-methyl-6-(N-cyclohexyl-N-decylamino) fluoran, 2-anilino-3-methyl-6 -(N-ethyl-N-isoamylamino) fluoran, 2-anilino-3-methyl-6-(N-ethyl-N-p-benzyl)aminopyrrolidine, 2- Anilino-3-methyl-6-(N-ethyl-N-propylamino) 20 201007726 fluorin, 2-anilino-3-methyl-6-(N-isopentyl-N-B Amino) fluoran, 2-anilino-3-methyl-6-(N-isobutyl-methylamino) fluoran, 2-anilino-3-methyl-6-(N-iso Propyl-methylamino) fluoran, 2-anilino-3-methyl-6-(N-methyl-p-toluidine-) fluoran, 2-anilino-3-methyl-6 -(N-n-pentyl-N-ethylamino) fluoran, 2-anilino-3-methyl-6-(N-n-pentyl-N-methylamino) fluoran, 2-aniline 3-methyl-6-(N-n-propyl-N-isopropylamino) fluoran, 2-anilino-3-methyl-6-(N-n-propyl-N-methyl Amino) fluoran, 2-anilino-3-methyl-6-(N-tert-butyl-N-methylamino) fluoran, 2-anilino-3-methyl-6-diethyl Amino group Alkane, 2-anilino-3-indolyl-6-di-n-butylamino fluorane, 2-anilino-6-(N-n-hexyl-N-ethylamino) fluorane, 2-di Benzylamino-6-(N-ethyl-2,4-dimethylamino) fluoran, 2-diphenylcarbamimido-6-(N-ethyl-p-toluidine ) fluorin, 2-dibenylamino-6-(N-methyl-2,4-dimethylanilino) fluoran, 2-diphenylguanamine-6-(N-methyl - p-toluidine) fluoran, 2-bromo-6-diethylamino fluorane, 2-chloro-3-indolyl-6-diethylamino fluorane, 2-chloro-6-( N-ethyl-N-isoamylamino) fluoran, 2-gas-6-diethylamino fluorane, 2-gas-6-dipropylamino fluorane, 2-diethylamine -6-(N-ethyl-p-tolylamino) fluorane, 2-diethylamino-6-(N-methyl-p-indolyl) fluoran, 2-didecylamine -6-(N-ethylanilino) fluoran, 2-didecylamino-6-(N-methylanilino) fluorane, 2-dipropylamino-6-(N-B Alkylamino) fluoran, 2-dipropylamino-6-(N-methylanilino) fluoran, 2-ethylamino-6-(N-ethyl-2,4-dimethyl Anilino) fluoran, 2-ethylamino-6-(N-fluorenyl-p-nonylanilino) fluoran, 2-methyl -6-(N-ethylanilino) fluoran, 2-methylamino-6-(N-methyl-2,4-dimethylanilino) fluorane, 2-mercaptoamino group- 6-(N-methylanilino) fluoran, 2-methylamino group 21 201007726 -6-(N-propylanilino) fluoran, 3_(1_ethyl_2·indolyl hydrazine-3 -yl)-3-(2-ethoxy-4-diethylaminophenyl)_4-u丫-ouine vinegar, 3-(1-ethyl-2-methylindol-3-yl) -3-(2-ethoxy-4-diethylaminophenyl)-7-decalactone, 3-(1-ethyl-2-indolylindole-3-yl)-3- (2-mercapto-4-diethylaminophenyl)-4-decalactone, 3-(1-ethyl-2-methylindol-3-yl)-3-(2-methyl 4--4-ethylaminophenyl)-7-decalactone, 3-(1-ethyl-2-methylindol-3-yl)-3-(4-diethylamino) Phenyl)_4_decalactone, 3-(1-ethyl-2-indolyl-3-yl)-3-(4-N-n-pentyl-N-methylaminophenyl) -4-decalactone, 3-(1-methyl-2-mercaptopurin-3-yl)_3_(2-hexyloxy_4_diethylaminophenyl)-4-indole Lactone, 3-(1-ethyl-2-methylindol-3-yl)-3-(2-ethoxy-4-diethylaminophenyl)_4_decalactone, 3 -(N-cyclohexyl-N-decylamino)-6-methyl-7-phenylamino fluorane 3-(N-ethyl-N-isoamylamino)-6-indolyl-7-phenylamino fluorane, 3-(N-ethyl-p-tolylamino)-6-methyl -7-phenylamino fluorane, 3,3-bis(2-ethoxy-4-diethylaminophenyl)-4-indole S曰, 3,3-double (2-B Oxy-4-diethylaminophenyl)-7-. Vinegar, 3,6-dibutoxy fluorane, 3,6-diethoxy fluorane, 3,6-dioxaoxy fluorane, 3-bromo-6-cyclohexylamino fluorane, 3-Ga-6-cyclohexylamino fluorane, 3-dibutylamino-7-(o-o-phenylamino) fluoran, 3-diethylamino _5-methyl _7 _Dibenzylamino fluorane, 3-diethylamino-6-(m-trifluoromethylanilino) fluorination, diethylamino-6,7-dimethylfluorene, 3- Diethylaminomethyl-7-amino-fluorination, 3-ethylethylamino-7-(2-indoleoxy-ylamino) fluorinated, 3-diethylamino -7-(N-Ethyl-N-methylamino) fluorination, 3-diethylamino-7-(N-chloroethyl-N-methylamino) fluoran, 3·2 Ethylamino-7-(N-methyl-N-benzylamino) fluorane, 3-diethylamino-7_(o-phenylphenylamine 22 201007726 base), 3-diethyl Amine _7_ oxa fluorane, 3-diethylamino _7-dibenzylamine fluorination, 3~diethylamine H ethyl fluorescein, 3-diethylamino-7- N-methylamino fluorane, 3-dimethylamino-6 methoxy fluorane, dimethylamino-7-methoxy fluorane, 3-mercapto-6 (N-ethyl-p-anilide) Base) arroline, 3_piperidinyl-6- -7-stylamino fluoran, 3- σ-haha 17-based-6-methyl-7-p-butylphenylamino fluorane and 3-°-pyridyl-6-methyl- 7-phenylamino fluorane. In the specific examples of the coating 230 disclosed herein, other dyes that may be used include, but are not limited to, leuco dyes (such as arro leuco dyes) and ruthenium iridium contrast agents, as described in Musila. (Muthyaia), "Chemistry and Application of Colorless Dyes" edited by Ramiah, (Plenum Press (1997) (ISBN 0-306-45459-9)). Specific examples of the labeled coating 230 may include almost any known leuco dye including, but not limited to, an amino-triarylmethane, an amine beta mountain, an amine thioguanidine, an amine-9, 10-Dihydro-acridines, aminopyridiniums, aminophenothiazines, aminodihydro-morphines, aminodiphenylmethanes, aminohydrocinnamic acids (cyanoethyl) Pit, colorless sulfhydryl group) and corresponding esters, 2-(p-hydroxyphenyl)-4,5-diphenylimidazole, indanones, colorless indoleamines, hydrazines Class, colorless genus dye, amine group 2,3_dihydro oxime, hydrazine, tetra-_p-, p-, bis-, 2-(p-phenylphenyl)_4,5-diphenyl Imidazoles, phenethyl anilines and mixtures thereof Particularly suitable leuco dyes include: 2'-anilino-3'-methyl-6, _ (dibutylamino alkoxy group Firefly: 23201007726

2-anilino-3-indolyl-6-(N-ethyl-N-isoamylamino) fluoran:

2-anilino-3-indolyl-6-(di-n-pentylamino) fluoran:

All three previously listed dyes are commercially available from Nagase Co., Japan. Other examples of dyes suitable for dual wavelength/band system include: pink DCF (CAS 29199-09-5); orange-DCF (CAS 21934-68-9); red-DCF (CAS 26628-47-7) ); vermilion-DCF (CAS 117342-26-4); bis(dimethyl)aminobenzylbenzylmorphine

24 201007726 (CAS 1249-97-4); Green-DCF (CAS 34372-72-0); gas anilino dibutylamino fluorane (CAS 82137-81-3); NC-yellow-3 (CAS 36886 -76-7); Copikem 37 (CAS 144190-25-0); Coppiken 3 (CAS 22091-92-5) 'It can be from Hodogaya in Japan or Sinan in the United States The city of Cincinnati is purchased by Novoon. Still other non-limiting examples of fluorin-based leuco dyes suitable for dual wavelength/band systems include: 3-diethylamino-6-methyl-7-anilinofluoran, 3- (N-ethyl-p-nonylanilide)-6-methyl-7-anilinofluoran, 3-(N-ethyl-N-isopentylamino)-6-methyl-7-aniline Sulphoxane, 3-diethylamino-6-methyl-7-(o-p-p-dimethylanilino) fluoran, 3-pyrrolidyl-6-methyl-7-anilino fluorane , 3-piperidinyl-6-mercapto-7-anilinofluoran, 3-(N-cyclohexyl-N-methylamino)-6-fluorenyl-7-anilinofluoran, 3-di Ethylamino-7-(m-trifluoromethylanilino) fluoran, 3-dibutylamino-6-methyl-7-anilinofluoran, 3-diethylamino-6-gas -7-anilino fluorane, 3-dibutylamino-7-(o-chloroanilino) fluorane, 3-diethylamino _7_(o-aniline) fluorescein, 3-di n-Pentylamino _6_methyl-7-anilinofluoran, 3-di-n-butylamino-6-methyl-7-anilinofluoran, 3-(N-ethyl-N-iso Amylamino)-6-methyl-7-anilinofluoran, 3_π-pyridylsyl-6-methyl-7-anilinofluoran, 1(3Η)-isobenzoxanone, 4,5, 6,7-four gas-3,3-double [ 2-[4-(Didecylamino)phenyl]-2-(4-methyllacylphenyl)vinyl]fluorene and mixtures thereof. In the embodiment of the present invention, an aminotriarylmethane leuco dye such as tris(N'N-dimethylaminophenyl)methane (LCV) or tris(N N-diethylaminobenzene) may also be used.曱) (LECV), tris(Ν,Ν-di-n-propylaminophenyl)decane (LPCV), tris(Ν'Ν-di-n-butylaminophenyl)methane (LBCV), double (4_Diethylamino group 25 201007726 phenyl)-(4-diethylamino-2-methyl-phenyl)methane (LV-1), bis(4-diethylamido-2- Methyl-based)-(4-diethylamino-phenyl)methyl, di(2-ethylamino)-2-methylphenyl)methane (LV-3), bis(4-diethylamine) 2-methylphenyl)(3,4-dimethoxyoxyphenyl)methane (LB_8); an aminotriarylmethane leuco dye having a different alkyl group substituent bonded to an amine moiety, wherein each alkyl group Each independently selected from the group consisting of CrC4 alkyl; and an aminotriarylmethane leuco dye having any of the foregoing columns = structure, which is substituted on the aryl ring by one or more alkyl groups, wherein the latter alkyl groups are each Independently selected from = C1-C3 alkyl. ' Any suitable developer can be used with these leuco dyes. According to some embodiments, it is desirable for the developer to be photochemically or photothermally modified: a desired developer precursor form. As previously mentioned, the need to physically separate the developer from the dye can be eliminated by providing the developer in the form of a precursor. For example, both the dye and the developer precursor can be dissolved in the matrix, except that one of the color forming components is provided by the particles suspended in the matrix. A developer precursor suitable for use in the specific examples disclosed herein, without limitation, an acetate or benzoate having a phenolic compound, such as fluorenylbiphenyl, dipropylene-based biphenyl, Double age A, curcumin, alpha cain, quinone-naphthol or any other compound having a hydrazine group attached to the aromatic ring. Other suitable chromogen precursors including photochemical reactions are phenyl esters which undergo molecular rearrangement to become capable of developing (activating) leuco dyes. This restructuring is sometimes referred to as Fries restructuring. The surface can be driven by heat. In some instances, Lai may perform a light-initiated Fress recombination (sometimes referred to as Light Frys reorganization). The rearrangement of the two types (heat and 201007726 light drive) is within the scope of the disclosed specific examples, and the reorganization of the stab may be light, heat or a combination thereof. In certain embodiments, suitable chromogen precursors include compounds having the formula:

ROCOR wherein R is aryl and R is alkyl or aryl. Typical compounds include, but are not limited to, di-indole-acetylated and di-quinone-based deuterated curcuminoids. Furthermore, any aryl ester that absorbs or has a peak absorption wavelength ranging from about 380 nm to about 420 nm (more particularly from about 4 Å to about 41 Å Nano) may be suitable for use in The developer precursor herein. These developer precursors have an absorbent 239 suitable for the leuco dye. Other suitable colorant ester precursors include bisphenol_A, bisphenol_s, hydroxyphenolic esters of benzoate, TG-SA (see, 4,4,-ί wind-based double [2-(2- Propylene based)]) and many more. It has been found that in the specific examples disclosed herein, an absorbent having a modifying group (as described in U.S. Patent No. 6,015,896, and U.S. Patent No. 6,025,486, the disclosure of each of As a contrast agent 240. This modifying group may be present on the ring, at the center of the naphthalocyanine or phthalocyanine complex, or an ion. Examples of certain suitable naphthalocyanine and indigo cyanine dyes are shown below:

27 201007726 / Vfl'c

••... gradually R -<i s- !i*M 'ίι>^ 酜花青化合物(a)

Again, certain commercial dyes previously used for low density optical media recorded at 650 nm and 780 nm are useful as contrast agents 240 in the high density optical media 100 disclosed herein. This dye is particularly useful in combination with an absorbent 239 such as C.I. Solvent Yellow 93 or C.I. Solvent Yellow 163. This 28 201007726 examples of commercial dyes include those used in conventional DVD or CD recordings, such as Irgaphor® Ultragreen MX, Lafite® Laserviolet, and Okafor® 1699 (All of these are commercially available from Ciba, Tarrytown). Other examples of suitable contrast agents 240 include the following: 1) those described in U.S. Patent No. 5,079,135, Japanese Patent No. 2,910,042 B2, European Patent No. 0 376 327 B1, and Hong Kong Patent No. 1007621 A1 A company of Sony Corporation (limited) that has been assigned to Tokyo and incorporated herein by reference; and 2) those described in U.S. Patent Application Publication No. 2002/0015858 and Japanese Patent Application Publication No. 2002-002112, Both have been transferred to Tokyo Toyo Ink Mfg. Co. Ltd. and incorporated herein by reference. In a non-limiting embodiment of the media 100 disclosed herein, the dye coating 230 can include a leuco dye Novoon special cyan 39 (eg, contrast agent 240) and a CI solvent yellow 93 (eg, absorbent 239). )The combination. The dye coating 230 may also include suitable developers such as zinc salicylate and Pergafa St® 201 (commercially available from Ciba). As previously mentioned, another non-limiting embodiment of dye coating 230 includes C I•solvent yellow % (e.g., absorbent 239) and ugfo® 1699 (e.g., contrast agent 24 〇). A source of radiation (e.g., a laser or LED) capable of emitting light having a wavelength in the band from about 375 nm to about 435 nm can be used to develop the color or contrast to form a composition. Thus, the color or contrast can be selected to form a composition to use a device that emits wavelengths within this range. In particular, light source sources (such as those used in some DVD and laser disc recording devices) 29 201007726 emit energy at a wavelength of approximately 405 nm. It can be extended to the length of it...I 匕3 is adjusted to the selected wavelength, 匕 radiation absorber to improve local heating.

= When recording, the media (10) is positioned such that eight light-emitting persons having a wavelength range from sami to 435 nm are emitted by the laser (9) onto the dye coating 230. #作激光150' allows sufficient energy to be delivered to the surface to form the foot. Both of the positions of the laser (10) media (10) are programmed by the processor such that the light is pulsed by the laser 15 形成 to form a pattern of marks 242 on the dye coating and the occupational surface. The resulting mark pattern will be read away from the wavelength/band of at least the wavelength of the write wavelength/band (depending at least in part on the absorber 239/contrast 24G combination and structural disc characteristics). When it is desired to read the recording mark 242, it is understood that a radiation source (e.g., a laser or an LED) that emits light having a red wavelength ranging from about 620 nm to about _ nanometers can be used. Relocating the media excitation again so that the light emitted by the laser 15 (which is typically different from the laser 15 先前 previously described for writing) (which has a wavelength range from 62 G nm to _ nanometer) is shot at Mark the surface. Operating the laser 150 so that the light emitted by the person at the surface is not sufficient to cause the surface to be transmitted

Mark the energy of 242. Rather, the incident light has a greater or lesser degree of reflection at the surface of the mark depending on the absence or presence of the mark 242. When the medium 1 is moved relative to the laser 150, a change in the reflection coefficient (which produces a signal 165 corresponding to the surface of the target) is recorded by the optical detector 157. Both the laser 150 and the position of the media 1 are controlled by the processor 166 during the reading process. It is to be understood that the read/write system 17 described herein is merely exemplary and includes components already known in the art. A variety of modifications can be made, including the use of multiple lasers, processors and/or detectors, and the use of 30 201007726 light with different wavelengths. The reading member can be separate from the writing member or can be combined in a single device. The media/disc 100 disclosed herein has an equivalent (or similar) reflective and modulated signal and a low push-pull signal to the embossed DVDROM media to prevent DVDROM players from being played by existing DVDROM discs. And the DVD recorder inadvertently detects media as recordable. Although a number of specific examples have been described in detail, it will be apparent to those skilled in the <RTIgt; Accordingly, the foregoing description is considered as illustrative and not restrictive. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a half-diagram perspective view and a block diagram of a specific example of a disc recording system; Fig. 2 is a cross-sectional view showing a part of a cut example of a recording medium. A partial block diagram of certain elements associated with the system shown in Figure 1; Figure 3 is a perspective view of another specific example of a δ-recorded medium. [Major component symbol description] 11 recording medium 156... transmission beam 110.. optical beam 157... optical detector 114... display monitor 158..._L detector 148... optical member 159... circular lens 150... light source 162. .. drive motor 152 ... incident energy beam 163 ... signal 154 &quot; · reflected beam 164 · · controller 31 201007726 165 · · signal 234 ... protective layer 166 ... processor 236 &quot; buffer layer 168... Analyzer 240...Contrast Agent 170...Read/Write System 239...Absorber 220...News 242...Optical Detection Mark 222...Surface 600...Optical System 230... Dye coating D... weave depth φ 231...reflection layer G... weave 32

Claims (1)

201007726 VII. Patent application scope: 1. An optical data recording medium comprising: a substrate; and a dye coating built on the substrate, the dye coating comprising a maximum light at the first wave band Absorbing absorbent and a contrast agent having maximum light absorption at a second wave band at least 100 nanometers away from the first waveband; wherein the media is configured to have a reflectivity greater than or equal to 45% and The push-pull signal at the second band (卩11811卩11118丨81^1) (??3) is equal to or less than 0.4. 2. The optical data recording medium of claim 1, wherein the substrate comprises at least one groove having a depth of less than 170 nm or a width of less than 350 nm. 3. The optical data recording medium of any one of the preceding claims, wherein the substrate comprises at least one groove having a depth ranging from about 110 nm to about 145 nm. Meter. 4. The optical data recording medium of any one of claims 1 to 3, wherein the contrast agent is configured to perform a chemical or physical change upon receiving energy from the absorbent, thereby producing a The mark of the optical optical reading of the two-band. 5. The optical data recording medium of claim 4, wherein the mark has a modulation greater than or equal to 0.6 at the second wave band. 6. The optical data recording medium of any one of claims 1 to 5, wherein the first band is 405 nm and the second band is 650 33 201007726 nm. 7. The optical data recording medium of any one of claims 1 to 6, wherein the push-pull signal (ppa) at the second wavelength band is less than 0.1. 8. The optical data recording medium of any one of claims 1 to 7, wherein the medium has the DVD+R form. 9. The optical data recording medium of any one of claims 1 to 7, wherein the medium has a DVD-R form, and wherein the push-pull (PPa) after writing is equal to or less than 0.3. 10. A method for producing an optical data recording medium as claimed in claim 1, the method comprising: establishing the dye coating on the substrate; and 4 configuring the structure of the medium such that the medium At the second band there is a reflective and push-pull signal (PPa). 34