TW200811858A - Optical recording medium - Google Patents

Abstract

An optical recording medium is provided in this present invention. The optical recording medium could make visible information by using vivid colors, and the visible information could have sufficient contrast, so as to obtain great visibility. The optical recording medium 10 includes a first substrate 16, a digital information recording layer 18 and visible information recording layer 24. The digital information recording layer 18 is formed on the first substrate 16 and records digital information by light from a surface side of the first substrate 16. The visible information recording layer 24 records visible information by light from a surface side of a second substrate 22. The second substrate 22 is disposed on an opposite side of the first substrate 16. A reflection rate of the visible information recording layer 24 at the wavelength of the laser light is more than or equal to 8%. If using L*, a* and b* to represent color coordinates of the visible information recording layer 24 while not recording the visible information at the visible information recording layer 24, a conditional identity, 30 ≤ L* ≤ 70, is satisfied.

Description

200811858 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to an optical recording medium that can be utilized, and more particularly to an optical recording medium. Recording and reproducing of information by laser light can also be drawn by using laser light. [Prior Art]

In an optical recording medium such as a DVD-R type, an optical recording medium on which a marking layer (a surface on the opposite side to the side irradiated with the laser light) is provided on the marking surface (the surface on which the laser beam is irradiated) is put into practical use. The user can print a photo on the printed layer using a spray or the like, or re-prepare the inkjet for forming an image in the inkjet printing. Further, after the optical recording is performed, the optical recording medium is moved to an ink jet printer or the like to form a working time. Further, when a sample is formed on a plurality of optical recording media to form an image, it is felt that the working hours are very complicated.婢_Because of the previous proposal, there is an optical record with visible f-signal. The visual information recording layer can record visual information on the opposite side of the recording information record (pit information). Reference is made to Japanese Laid-Open Patent Publication No. 2005-219326.铮 L L 日本 日本 _ _ 219 219 219 219 213 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 219 Maximum absorption in the range, from 350 nm to 450 nm, _ nm to 700 _, and 75 〇 leg 6 200811858

丄^, the laser light of at least any of the TJpAX 850 nm has an absorbance greater than or equal to 〇·. SUMMARY OF THE INVENTION However, the optical recording medium disclosed in the above-mentioned Japanese Patent Laid-Open Publication No. 2005-219320 has the following problems: • The visible information recording layer has a low reflectance to the laser light, and cannot be used. Will laser the wire, or sometimes

可视, , θ θ's visual 吼 thermal method obtains sufficient contrast, and the amount of reflected light is too large, so it is difficult to see the contents of the 纟 纟. The present invention has been made in view of the above problems, and an object thereof is to provide an optical recording medium which can draw visual information with vivid colors, and which can obtain sufficient contrast by the drawn visual information to achieve good visibility. The optical recording medium of the present invention comprises a visual information recording layer for recording visual information by irradiation of laser light, wherein the optical recording medium has a reflectance of 8% or more at a wavelength of the laser light. And when I; a*, b* indicates the color of the visual information recording layer in a state where the visual information is not recorded in the visual information recording layer, 30$1/$70 is satisfied. First of all, the reflectance at the wavelength of the laser light is 8% or more, and the laser light can be easily focused on the visible information recording layer, and the focus servo can be implemented while the visual information is applied to the visual layer. . Eight records the above-mentioned slightly discreet brightness r: In addition, since the above-mentioned visual information recording layer in the state of the above-mentioned visual information recording layer is not recorded, the visual information recording layer is drawn on the visual information recording layer. After the establishment of the 妗, the difference between the brightness of the unfinished part is significant. This is related to heavy/ratio. In addition, when L*>70, because the edge is too bright before the visual information, the difference between the drawn portion and the unpainted brightness after drawing the visual information almost disappears, in the actual use environment; Second, the amount of light is too large to be seen clearly. As described above, in the present invention, visual resources can be drawn using vivid colors.

The visual information is drawn and the contrast ratio 7 is obtained to achieve good visibility. Further, in the present invention, the visual information recording layer is the laser light. The reflectance at the wavelength is preferably greater than or equal to 1% by weight and less than or equal to 50%. More preferably, it is 12% or more and 4% or less. Further, in the present invention, the above a* and b* may satisfy 00<a*, 〇<b*, or may satisfy a*$〇, 〇<b*. In the present invention, the above a* and b* may satisfy 〇<a*, b*$〇, or may also satisfy a*^0, b*$〇. In the present invention, the wavelength of the laser light can be set to 600 nm to 700. Further, in the present invention, the visible information recording layer may have a dye compound represented by the following formula (1). General formula (1): 200811858

[Chemical 1]

^Wu (1), X] and χ2 are carbon butterfly 6-member rings. The two ends can be phased, and the atoms form a 5. ^ is a t-valent cation. with. Niobium is hydrogen or a substituent. ^ is the valence cation. In the present invention, the above-mentioned visual resource m records the dye compound shown in >. (3) may have the following general formula (2) general formula (2): [chemical 2]

In the formula (2), a cation. X3 is an atomic group having an acidic core. In the present invention, the visual information tablet 5 has a recording layer which can be a pigment compound represented by the ancient (3). /, the following general formula (3): 9 200811858 /Η^μιι [化3]

In the formula (3), Χ4 is an atomic group having an acidic core. ^ is a t-valent cation. In the present invention, the visual information recording layer may have a dye compound represented by the following formula (4). General formula (4): [Chemical 4]

In the formula (4), R3 is a hydrocarbon group having a carbon number of 6 to 20 or a substituent containing ferrocene. The α position is preferred, and the substituent is preferably 3 or more. In the present invention, the visible information recording layer may have a dye compound represented by the following formula (5). General formula (5): [Chemical 5]

In the formula (5), R4 is a hydrocarbon group having a carbon number of 10 or less, and R5 is a carbon or a hetero atom, and may have a substituent. R6 is a hydrocarbon group or a heterocyclic group. When R6 is greater than or equal to 2, a ring can be formed. r is an anion. In the present invention, the visual information recording layer may have a dye compound represented by the following formula (6). General formula (6): [Chemical 6]

In the formula (6), R7 is a hydrocarbon group having a carbon number of 10 or less, and R8 is a carbon 11 200811858 厶 j / υ μιι or a hetero atom ' may have a substituent. R9 is a hydrocarbon group or a heterocyclic group. When R9 is greater than or equal to 2, a ring can be formed. Z- is an anion. In the present invention, the above-mentioned visual information recording layer may have a dye compound as described in (7). "General formula (7): [Chem. 7]

In the formula (7), Βι, Β2, and Β3 are carbon atoms or nitrogen atoms. <21, Heart 2, 3, R24, R25 and KM each independently represent a hydrogen atom or a monovalent substituent, and Rn'R23 may be bonded to each other to form a heterocyclic ring of 5 to 7 members. A, a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. n means 〇, 1, 2, and 3. When η is greater than or equal to 2, a plurality of ^ and hearts may be the same or different. In the present invention, the visual information recording layer may have a dye compound represented by the following formula (8). General formula (8): 12 200811858

AD

In the formula (8), 113! to 1135 are monovalent substituents, preferably an alkyl group having a carbon number of 10 or less. It is an anion. Further, in the present invention, the visible information recording layer may have a dye compound represented by the following formula (1), a dye compound represented by the following formula (2), and a formula (3): Pigment compound. General formula (1): [Chemical 9]

In the formula (1), X and X2 are carbon or a hetero atom, and form a 5-membered ring or a 6-membered ring. Both ends may be the same or different. R! is hydrogen or a monovalent substituent. γ is a t-valent cation. 13 200811858 15 /45pil Formula (2): [Chem. 10]

In the formula (2), x3 is an atomic group having an acidic core. r is a t-valent cation. General formula (3): [Chem. 11]

In the formula (3), Χ4 is an atomic group having an acidic core. The ore is a t-valent cation. In this case, the blending ratio of the dye compound represented by the above formula (1) is Ea, and the blending ratio of the dye compound represented by the above formula (2) is Eb, and the formula is as described above ( 3) When the compounding ratio of the dye compound shown is Ec, it is preferably Ea = 20 to 45%, Eb = 30 to 45%, and Ec = 20 to 35%. More preferably, the visible information recording layer has a thickness of 55 nm to 150 nm. 200814 200811858 /43pil Further, in the present invention, the visible information recording layer may have a dye compound as shown in the following formula (4), and A dye compound represented by the following formula (5). General formula (4): [Chemical 12]

Rs

In the formula (4), R3 is a hydrocarbon group having 6 to 20 carbon atoms or a substituent containing ferrocene. The α position is preferred, and the substituent is preferably 3 or more. General formula (5): 15 200811858 厶j, gas "μιι [Chemical 13]

In the formula (5), R4 is a hydrocarbon group having a carbon number of 10 or less, and R5 is a carbon or a hetero atom, and may have a substituent. R6 is a hydrocarbon group or a heterocyclic group. When R6 is greater than or equal to 2, a ring can be formed. Z_ is an anion. In this case, the blending ratio of the dye compound represented by the above formula (4) is Ed, and when the blending ratio of the dye compound represented by the above formula (5) is Ee, it is preferably Ed. =60~80%, Ee = 20~40%. More preferably, the thickness of the above-mentioned visual information recording layer is from 90 nm to 100 nm. Furthermore, in the present invention, the visible information recording layer may have a dye compound represented by the following formula (4), a dye compound represented by the following formula (5), and a formula (6): Pigment compound. General formula (4): [Chem. 14]

16 200811858 / "Γ^ρΐΐ In the formula (4), R3 is a hydrocarbon group having a carbon number of 6 to 20 or a substituent containing ferrocene. The α position is preferred, and the substituent is preferably 3 or more. General formula (5): [Chem. 15]

In the formula (5), R4 is a hydrocarbon group having a carbon number of 10 or less, and R5 is a carbon or a hetero atom, and may have a substituent. R6 is a hydrocarbon group or a heterocyclic group. When R6 is greater than or equal to 2, a ring can be formed. Z_ is an anion. General formula (6): [Chem. 16]

R? R? Z In the formula (6), R7 is a hydrocarbon group having a carbon number of 10 or less, and R8 is a carbon or a hetero atom and may have a substituent. R9 is a hydrocarbon group or a heterocyclic group. When R9 is greater than or equal to 2, a ring can be formed. It is an anion. 17 200811858 玄=1'=° The formulation of the dye compound represented by the above formula (4) is set to Ed, and the compounding ratio of the dye compound represented by the above formula (5) is set to f as in the above formula (6) The blending ratio of the pigment compound shown is set to Ef%, preferably Ed=6Q~8()%, ~ grab,

Ef = 20 times. More preferably, in the present invention, the visible information recording layer may have a dye compound such as the following formula (4), such as a formula of H. (8) A pigment compound as shown. [化π]

18 200811858 General formula (7): [Chem. 18] R21

A

/ N f 2 mih In the formula (7), it is a carbon atom or a nitrogen atom. R21, R22, R23, R24, R25 and R26 each independently represent a hydrogen atom or a monovalent substituent, and R22 and R23 may be bonded to each other to form a heterocyclic ring of 5 to 7 members. A represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. η represents 0, 1, 2 or 3. When η is greater than or equal to 2, a plurality of R25 and R26 may be the same or different. General formula (8): [Chem. 19]

19 200811858 In the formula (8), R3] to R35 are a monovalent substituent, and an alkyl group having a carbon number of 10 or less is preferred. Z** is an anion. In this case, the blending ratio of the dye compound represented by the above formula (4) is Ed, and the blending ratio of the dye compound represented by the above formula (7) is Eg, and the formula is as described above ( 8) When the compounding ratio of the pigment compound shown is Eh, it is preferably Ed=5〇~70%, and Eg=1()~3()%,

Eh = 10~30%. More preferably, the thickness of the above-mentioned visual information recording layer is 100 nm to 120 nm. As described above, according to the optical recording medium of the present invention, the visual information can be drawn by the color of the fresh disk, and the visual information drawn can obtain sufficient contrast. To achieve good visibility. [Embodiment] Hereinafter, an embodiment of an optical recording medium of the present invention will be described with reference to Figs. 1 to 26 . As shown in FIG. 1, the optical recording medium 10 of the present embodiment has a first laminated body 12 and a second laminated body 14. The first laminated body 12 has a first substrate 16 having transparency, a digital information recording layer 18 formed on the first substrate 16, and a first reflective layer 20 formed on the digital information recording layer 18. The second laminated body 14 has a transparent second substrate 22, a visible information recording layer 24 formed on the second substrate 22, and a second reflective layer 26 formed on the visible information recording layer 24. Further, the first laminated body 12 and the second laminated body 14 are bonded to each other via the adhesive layer 28 so that the first reflective layer 20 and the second reflective layer 26 face each other. 20 200811858 ζο /^pil

The digitally poor, recording layer 18, for example, can be used to record and/or reproduce data (pit information) from lasers e-plated from the i-th substrate. A visual communication recording layer 24, for example, can use laser light from the second substrate to record visual information. Further, the optical recording medium 10 is provided with a pit: a field 30 on a portion of the surface of the second substrate 22 which is on the side of the visible recording layer 24, in which the pre-pit is formed. Formed on the area 3:

The pre-pits 32 are preferably shaped. , an information recording medium shown by a combination of pre-pits 32 ίο related to various assets 1 ^ for the light and light H _ ^ j ], for example, the optical recording medium ln ^ is visible The information recording layer 24 of the optical recording medium identification information or, in the visual information record _ 24 field system visual information (images, etc. = Tian 3 Xu output phase _ information or information related to the point diameter, and can = Gray-scale phase of information_information, etc. Therefore, it is possible to easily detect whether or not the optical recording medium 1 is optical recording with the visible information recording layer 24 by detecting, dimple 32', and When drawing visual information on the visual asset=layer 24, 'the best laser output can be used!,: clothing' and the visual information can be recorded with the high-edge characteristics. In addition, the combination of the pre-made crater 32 (4), other manufacturer information may be mixed, etc., and the position of the pre-pit area 3〇 on the surface of the second substrate 22 is not particularly limited. For example, the optical recording medium of the first modification of Fig. 3 L〇a (jin does not. pre-concave concave; t several areas 3G can be located compared to the formation of visual information recording layer 4 The area (visible to the inner peripheral side of the inner region (4) of the poor recording layer. 21 200811858 AJIHDpn By placing the pre-pit area 30 on the inner peripheral side, the pre-pit 32 is not filled with the pigment compound, so there is an easy detection from The advantage of the reflection of the pre-pit 32. However, in order to prevent the formation of the visible information recording layer 24 in the pre-pit area 30, between the outermost circumference of the pre-pit area 30 and the innermost circumference of the visible information recording layer forming area 34, A certain margin is left. Of course, as far as the visual information recording layer forming region 34 is as wide as possible, as shown in FIG. 1, the pre-pit area 3 and the visible information recording layer forming region 34 may be partially That is, at least a part of the visible information recording layer 24 can be magically shaped on the pre-pit. In this case, the formation position of the visible information recording layer 24 can be relatively freely set, so that the yield of the manufacturing process is improved. As shown in FIG. 1 or FIG. 3, when the pre-pit area 3 is provided on the inner peripheral side of the second substrate 22, it is preferably provided at a half of the center of the second substrate 22. In the range of 21 mm to 24 mm. As shown in Fig. 2, the average depth hp of the pre-pits 32 is set to 1 〇〇 nm to 400 nm. By setting it to 100 nm to 400 nm, it will be from the pre-pit φ 32 The signal amplitude (denoted as a reflection signal) after the reflection of the electronic signal becomes larger, and the reading accuracy of the reflective signal can be improved. Here, the average depth of the pre-pit 32 is described in more detail below. In the case where the pre-pit area 30 is located on the inner peripheral side of the visible information recording layer forming region 34, it is preferable that the average depth hp of the pre-pit is 1-5 nm to 250 nm, more preferably 1 〇〇 leg ~ i7 〇 nm. Further, in this case, as will be described later, the signal characteristics are excellent as compared with the case where the visible information recording layer 24 is formed on the pre-pit area 30, so that the degree of freedom in designing the shape of the AD pre-pit 32 can be improved. On the other hand, in the case where at least a part of the visible information recording layer is formed on the pre-pit 32, the average depth hp of the pre-pit 32 is preferably 150 nm to 400 nm, more preferably 15 〇 nm to 35. 〇nm,= t

The good is 200 nm to 330 nm, particularly preferably 23 〇 nm to 33 〇 and most preferably 230 nm to 300 nm. In the case where the visible information recording layer 24 is formed on the pre-pit 32, the reflection of the laser is affected by the dye, so that the above range is preferable from the viewpoint of improving the reading accuracy of the signal. The average half width w of the pre-pit 32 is preferably from 200 nm to 500 nm, more preferably from 25 Å to 45 Å, and particularly preferably from 390 nm to 440 nm. By setting 200 faces to 5 〇〇, the crosstalk (erc) sstalk overlapping in the direction of the opposite == sign becomes smaller, and a sufficient signal amplitude can be obtained in the detection. Further, the length (half height) of the closing direction of the pre-pit 32 varies depending on the recorded information, so that it can be appropriately set 'again-in addition, preferably, on the convex portion 32A of the pre-pit 32 The ratio (hl/h2) of the average thickness hl of the visible information recording layer 24 to the average thickness h2 of the visible recording layer 24 on the concave portion of the pre-pit % is 0.1 to 0.9, and the concave portion 32 of the pre-pit 32 The depth of the recess (hP + hl-h2) of the visible information recording layer % is 7 Gmn 〜 25 〇 nm. The hunting is performed such that "hl/h2" and rhp + hl-h2" are in the above range, and the surface of the visible information recording layer 24 on which the second reflecting layer 26 is formed is suitable for reading the unevenness of the laser light, thereby obtaining good regeneration. Signal. "Secret = good range is G.2~.>" hp + hl-W" is better. Just _ ' Especially good is 12G nm~(10)nm, especially good is 13〇23 200811858 z wpii nm~ 170 nm 〇r忐ί 2 and: No, preferably, the reflective layer 26 is formed along the visible information recording layer 24, and the average thickness u of the second reflective layer 26 on the convex portion 32A of the pre-pit 32 is The ratio of the average thickness t2 of the pre-pits & 2 reflective layer 26 is _) 8 \ is preferably 0.9 to U.

Further, the above hp, hl, and h2 can be obtained by using afm or a transmission spectrum or an ellipsometer. In addition, other methods are used to observe the cross section of the completed optical recording medium 1 () by SEM or the like, and the shape of the pre-pit is measured by using afm SPI3800N/SPA500 (Seiko〇i herumems) ^ Limited ^ Manufacturing) and probe NCH broadcast (manufactured by Japan Veec Co., Ltd.). The second substrate 22 having the pre-pits 32 as described above can be manufactured using _ as shown below. The stamper is provided with concavities and convexities for forming the above-described pits 32. The average height of the convex portions in the concavities and convexities is preferably 丨刈 to 400 nm. The above optical recording medium can be efficiently manufactured by using a stamper. The step of manufacturing the stamper can be carried out in almost the same steps as the stamper used to fabricate a conventional CD-ROM. Specifically, a photoresist can be formed by depositing a photoresist on a glass master, developing it, and the like, and then sputtering a metal such as nickel to perform electroforming. The configuration of the optical recording medium 10 described above is a visual information recording layer 24 that can display visual information by irradiation of laser light, and a pre-pit area having one or more pre-pits 32. 3〇, then 24 200811858 is not particularly limited. In other words, the optical recording medium 10 can be of any type such as a read-only type, a single write type, or a rewritable type. Among them, the comparison is: single-write multi-read type. Further, the recording form is not particularly limited as long as it has a phase change type, a magneto-optical type, a dye type, and the like. Among them, a pigment type is preferred.

In particular, the optical recording medium 10 shown in FIG. 1 has a digital information recording layer 18 on the i-th substrate 16, and a visible information recording layer 24 on the second substrate 22, and I have a private structure. It is preferably used as, for example, a DVD (in addition to a DVD, a DVD-R or a DVD-RW, an HD DVD, etc.). The layer configuration of the optical recording medium includes, in addition to the layer configuration shown in Fig. 1, the following configuration. (1) The first layer structure is not shown, and is configured such that the digital information recording layer 18, the first reflective layer 20, and the adhesive layer 28 are sequentially formed on the first substrate 16 on the adhesive layer 28. The second substrate 22 having the visible information recording layer 24 is bonded. (2) The second layer structure is not shown, and is configured such that the digital information recording layer 18, the first reflective layer 20, the protective layer, and the adhesive layer are sequentially formed on the first substrate 16 in the adhesive layer. On the 28th, the second substrate 22 having the visible information recording layer 24 is bonded. (3) The third layer structure is not shown, and is configured such that the digital information recording layer 18, the first reflective layer 20, the first protective layer, the adhesive layer 28, and the second are sequentially formed on the first substrate 16. The protective layer forms a second substrate 22 having a visible information recording layer 24 on the second protective layer. (4) The fourth layer structure is not shown, and the digital information recording layer 18, the first reflective layer 20, the first protective layer, and the adhesive layer are sequentially formed on the first substrate 25 200811858 / UX16. 28. The second protective layer and the third protective layer form a second substrate 22 having the visible information recording layer 24 on the third protective layer. (5) The fifth layer is formed by sequentially forming the digital information recording layer 18, the first reflective layer 20, the adhesive layer 28, and the second reflective layer 26 on the first substrate 16, and the second reflective layer 26 is formed on the first substrate 16. The second substrate 22 having the visible information recording layer 24 is formed. This layer configuration is almost the same as in FIG. '

(6) The sixth layer structure is not shown, and is configured such that the digital information recording layer 18 and the first reflective layer protective layer are sequentially formed on the first beauty plate 16, and on the second substrate 22, The recordable layer 24, the second reflective layer 26, and the second protective layer are sequentially formed, and the first protective layer and the second protective layer are bonded via the adhesive. Further, the layer configuration shown in Fig. 1 and the above (丨) to layer configuration are merely examples, and these layer configurations are not only a part of the above-described order. Further, the - part may be omitted (in addition to the visual information recording, each layer may be composed of one layer or may be composed of a plurality of layers. Second, the layer structure disclosed in Fig. 1 will be taken as an example, and the layers of the optical recording 婢-, and the method of forming the same will be described. Carcass 10 [Digital Information Recording Layer 18), 隹 讯 讯 骑 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 In particular, record digits and pay μ (encoded information). Digital #记录记录Α Recording variant recording layer 'better color; recording; color, color I recorded layer (placement poor recording layer 18) contains pigments ^ 26 200811858 jLD /η^μιι Specific Examples include: cyanine pigment, oxonol dye, azo dye, phthalocyanine pigment, triazole compound (including benzoquinone triterpenoid), triazine compound, part flower Merocyanine compound, aminobutadiene compound, cinnamic acid compound, benzoxaz〇le compound, pyrromethene compound, squarylium compound, etc. . Further, these pigments may have metal atoms in the coordination center. In addition, it is also possible to use the Japanese Patent Laid-Open No. Hei 4-7469A, the Japanese Patent Application Laid-Open No. Hei 8-127174, the Japanese Patent Laid-Open No. Hei-53758, the Japanese Patent Laid-Open Publication No. Japanese Laid-Open Patent Publication No. 334205, Japanese Patent Laid-Open Publication No. Hei No. Hei No. Hei No. Hei No. No. Hei No. No. Hei. The pigment disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. In the case where the light medium 10 is rCEKR", the above compounds are good for palladium green pigment, azo dye, and indigo dye; in the case of "dVD_r", it is better to use cyanine pigment and ruthenium. 〇 〇 1 pigment, azo pigment (including Ni, Co complex), t each of the Qichuan compound; for "Blu-ray disc (five) (four) 丫 ^ sk) ^ ^ HD DVD", it is better to spend # pigment, _n〇1, azo dye, indigo dye, benzoquinone triazine compound, triazine compound. Further, in the case where the optical recording medium 10 is "CD_R", it is better that 27, 2008, 858 is a cyanine dye, an azo dye, an indigo dye; and it is a "difficult R" 〇χ〇η〇1 pigment, azo pigment (including Fen 1 〇 complex), in the case of "blue light disc and rib DVD", 疋 = green pigment, oxon 〇 1 pigment, azo pigment, 酞Cyan pigment. The document-depleted recording layer 18 is prepared by preparing a coating liquid such as a dye or the like with a suitable solvent such as a binder. Next, it is difficult to form a coating on the substrate, and it is formed by performing money. The concentration of the recording substance in the coating liquid is usually in the range of 〇 犹 1 % to 15% by weight. More preferably, it is a range of 0.1 wt% to 1 〇 wt%, particularly preferably a range of 〇·5 W 〜5 sec, and most preferably a range of G. 5 wt% to 3 wt%. The formation of the digital shell-5fU recording layer 18 can be carried out by vapor deposition, money plating, CVD, 4 ridge coating, etc., preferably by solvent coating. The solvent of the coating liquid may, for example, be an ester such as butyl acetate, ethyl lactate, acetic acid or cellosolve acetate; mercaptoethyl ketone, cyclohexanone j Cy^〇h=anone), methyl Ketones such as butyl ketone; dichlorodecane, dioxin, gasification of gas; hydrocarbons such as dimethyl carbazate; fluorenylcyclohexane; etc.: monobutyl ether, diethyl ether, tetrahydrofuran, dioxane Ether; ethanol, 3 alcohol, isopropanol, n-butanol, dipropazaki (5) (10) coffee also (4) finder, 2,2,3,3-tetrafluoropropanol and other fluorine-based solvents; ethylene glycol monoterpene ether And glycol ethers such as ethylene glycol monoethyl ether and propylene glycol monoterpene ether. The solvent may be used singly or in combination of two or more kinds in consideration of the solubility of the dye to be used. Further, various additives such as an antioxidant, a UV absorber, a plasticizer, and a lubricant may be added to the coating liquid depending on the purpose. 28 200811858 In the case of using a binder on 厶J/leaf jpi, examples of the binder include natural gelatin, cellulose derivatives, dextran, rosin (in), and ji gum. Organic polymer materials; and hydrocarbon resins such as polyethylene, polypropylene, polystyrene (P〇lyStyrene), polyisobutylene; polyvinyl chloride, p〇lyvinyHdene chloride, poly Vinyl resin such as vinyl chloride-polyvinyl acetate copolymer; acrylic resin such as polymethyl acrylate or polymethyl methacrylate; polyvinyl alcohol, chlorinated polyethylene, epoxy resin, butyral (butyral) A synthetic organic polymer such as an initial condensate of a thermosetting wax such as a resin, an oak, a gum derivative or a phenol-formaldehyde (Phenol f0rmaldehyde) resin. In the case where the binder is used as the material of the digital information recording layer 18, the amount of the binder used is usually in the range of 1 to 5 times the mass of the pigment, preferably 〇·1 times. ~5 times the amount of the range. Examples of the coating method of the solvent coating include a spray method, a spin coating method, a dipping method, a roll coating method, a blade coating method, a doctor roll (d〇ct〇r roll) method, and a screen printing method. Screen printing method, etc. The digital information recording layer 18 can be a single layer or an overlapping layer. The layer thickness of the digital information recording layer 18 is usually in the range of 10 nm to 500 nm, preferably in the range of 15 to 3 inches, more preferably in the range of 20 nm to 150 nm. In order to improve the light resistance of the digital information recording layer 18, the digital information recording layer 18 may contain various anti-fading agents. As the anti-fading agent, a singlet oxygen quencher can usually be used. As the singlet oxygen quencher, a mono- oxo quencher disclosed in the publication of a patent specification such as Umbrella can be used. Specific examples thereof include Japanese Patent Laid-Open No. Sho 58-175693 29 200811858 AD /HJpil No., Japanese Patent Laid-Open No. 59-31194, Japanese Patent Laid-Open No. 0.18387, and Japanese Patent Special Opening No. Japanese Patent Laid-Open No. 60-19587, Japanese Patent Special Open Day No. 0〇-35054, Japanese Patent Special Open No. 60-36190, Japanese Patent Open Heart No. 6〇_36191, Japanese Patent Special Open No. 60-44554, Japanese Patent Laid-Open No. 60_44555, Japanese Patent Laid-Open No. _44389, Japanese Patent Laid-Open No. 6-44390, Japanese Patent Special Opening 60_54892, Japanese Patent Special Open 60 -47069, Japanese Patent Unexamined No. 9995, Japanese Patent Special _ Kaiping 4-25492, Japanese Patent Special No., and Japanese Patent Special 6-26028, etc., German Patent No. 350399 The specification, as well as the singlet oxygen quencher disclosed in Sakamoto Chemical Society I" October 2, No. 1141. The amount of the anti-fading agent such as the above single-state oxygen quencher is usually in the range of 0.1 wt% to 50 wt% of the mass of the dye, preferably in the range of 0.5 wt% to 45 wt%, more preferably 3 The range of wt% to 40 wt% is particularly preferably in the range of 5 wt% to 25 wt%. Specific examples of the material constituting the phase change type digital information recording layer 18 include Sb-Te alloy, Ge-Sb-Te alloy, Pd-Ge-Sb-Te alloy, Nb-Ge-Sb-Te alloy, and Pd. -Nb-Ge-Sb_Te alloy, pt-Ge-Sb-Te alloy, Co-Ge-Sb-Te alloy, In-Sb-Te alloy, Agqn_sb-Te alloy, Ag-V-In-Sb-Te alloy, Ag-Ge-In_Sb-Te alloy, etc. Among them, a Ge-Sb-Te alloy and an Ag-In-Sb-Te alloy are preferred in terms of rewriting. The layer thickness of the phase change type digital information recording layer 18 is preferably set to 10 nm to 50 nm, and more preferably set to 15 nm to 3 〇 30. The phase change type digital information recording layer 18 of 200811858 nm ° or higher can be used. It is formed by a vapor film deposition method such as a sputtering method or a vacuum deposition method. (First Substrate 16 and Second Substrate 22) The first substrate 16 and the second substrate 22 of the optical recording medium 10 can be selected from any of various materials used as substrates of the conventional optical recording medium. another

Further, here, in the second substrate 22, pre-pits 32 are formed on the surface on which the visible information recording layer 24 is formed. Examples of the material of the first substrate 16 and the second substrate 22 include an acrylic resin such as glass, polycarbonate, or polymethylmethacrylate, and a polyvinyl chloride chloroethylene copolymer. A chlorinated vinyl resin, an epoxy resin, a crystalline (amorphous P〇ly〇lefm), a polyester, etc., are used in combination. In addition, this rod is free of I — 乂豕 月 月 % % % 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为The second substrate 22 is manufactured by the following steps: The substrate is printed on the side on which the visible information recording layer 24 is formed. The convexity corresponding to the depth of the pre-pit 32 is controlled by adjusting the film thickness of the photosensitive adhesive. The degree of reciprocity is preferably set to L1 mm, particularly preferably mm, and the thickness of the first substrate 16 and the second substrate 22 is 0.1 mm to 1.2 mm, and more preferably set to 〇·2 coffee = Set to Q·5 mm~U face. By using 〇·5 31 200811858 AD /Hjpil, it is possible to use the laser light system mounted on, for example, a DVD-R and a DVd+r WD recorder. In addition, it is better to form a basic test on the first ^ I6 or a Wei _ shout, and 2 22 can also form a substrate on the lining of the above-mentioned secret occupant. The track pitch of the groove of the substrate 1 is preferably in the range of * 280 rnn to 900 nm, and more preferably in the range of 3 〇〇 nm to 8 〇 = ^. Further, the depth (groove depth) of the trench is preferably in the range of b-plane to 200 nm, and more preferably in the range of nm to 18 〇 nm. In order to record high-definition visual information on the visual information recording layer 24, a groove (groove, gK) 〇ve) may be provided on the second substrate 22. In this case, from the viewpoint of the intensity distribution of the laser light for recording, the pitch of the groove is preferably set to the range of 〇·3 pm to 2 〇〇μηι, and more preferably 〇·6μιη~ΙΟΟμηι The range, especially good, is set to 〇.7jLim~5〇pm. Further, in the case where the visual information is recorded when the visual information is recorded and the thickness of the substrate on the side of the incident laser light is 0·6 mm, the depth of the groove is preferably set to 50 nm to 250 nm, more preferably Set to 8 〇 dirty ~ 2 〇〇 face, especially good is set to 100 nm ~ 180 nm. The width of the groove is preferably set to be 100 nm to 600 nm, and more preferably set to 2 〇〇 face to 5 〇〇 ,, particularly preferably set to 250 nm to 450 nm. In addition, sometimes the best groove shape

The range varies depending on the wavelength of the laser light, the NA, the thickness of the substrate, and the like. On the surface of the first substrate 16 (the side on which the groove is formed (the surface on which the pit is formed in the case of R 〇 M)), in order to improve planarity, improve adhesion, and prevent deterioration of the digital information recording layer, it may be set. Undercoat. 32 200811858 yfHjpn w field material 'for example, polymethyl propyl acetonate, propyl pure - methyl called miscellaneous, red olefin, cis acetylene copolymer, polyethyl bromide, N · acrylonitrile Amine, styrene, vinyl fluorene copolymer, chlorite, chloroform (chl〇r〇sulf〇nated p〇1ye postal coffee), nitrocellulose, vinyl chloride, chlorinated polyhydrazine, poly Vinegar, polyimine, acetic acid, ethyl acetate, ethylene glycol copolymer, ethylene, acetic acid, ethylene glycol copolymer, polyethylene, polypropylene, polycarbon, etc.; and Silane coupling agent The surface coating agent may be formed by dissolving or dispersing the above-mentioned substance in a suitable solvent to prepare a coating liquid, followed by top coating, dip coating, extrusion coating, or the like. The coating liquid is applied to the surface of the substrate. The layer thickness of the undercoat layer is usually in the range of 〇·〇〇5 μπι to 20 μπι, preferably in the range of 0·01 μπι to 10 μπι. In order to prevent the visual information drawn on the visual information recording layer 24 from being caused by specular light It is preferable that the roughening treatment is performed on the second substrate 22. The method for roughening the second substrate 22 is not particularly limited, and it is preferably applied as follows. (1) The first roughening treatment is performed by using a stamper that is subjected to roughening treatment on the surface on which the second substrate 22 is in contact with each other. The surface of the second substrate 22 on the side of the visible information recording layer 24 is roughened. Specifically, first, the stamper used in the process of manufacturing the second substrate 22 is subjected to roughening processing. The method is, for example, a so-called sandblast 33 200811858 15 /4jpir blast process, etc., and the desired thickness is prepared in advance. Further, it can be described as described in the fifth roughening treatment. Then, the stamper is placed in a mold so that the roughened surface is in contact with the resin material of the second substrate 22, and the molding is performed by a well-known method, whereby only one side is roughened. The second substrate 22, the above-mentioned "thickness of the period =", for example For example, it is preferred that the roughened surface has an average = degree (Rz) of 0.3 μm to 5 μιη, and the average length (RSm) of the roughness curve element is set to 1 μπι~ 5〇〇μιη. (2) The second roughening treatment is performed on the second substrate after molding. On the contact side, a surface on which the surface of the second information sheet 22 is formed by the information recording layer 24 is roughened by using a molding die which is subjected to roughening treatment. In the meantime, the main surface of the second substrate 22 is roughened by the molding die of the second substrate 22. In the method of the roughening treatment, in the same manner as in the case of the first roughening treatment, the second substrate 22 having only one surface roughened is produced by using a mold and molding by a known method. / (3) The third roughening treatment is performed by applying a tree in which the fine particles are dispersed on the contact surface of the visible information recording layer 24 after the second substrate 22 is manufactured, and the second substrate is cured. The surface on the side of the visible information recording layer 24 is roughened. As the above-mentioned resin, an acrylate-based zirconium, an epoxy-based, an isocyanate-based thermosetting resin, or the like can be used. Further, as the fine particles, inorganic fine particles such as cerium oxide (Si 2 ), aluminum oxide, or aluminum oxide, or acrylic resin fine particles or the like can be used. The volume average particle diameter of the fine particles is preferably W(tetra)~·μιη, more preferably 〇·6 μιη~丨〇〇. By adjusting the particles of the microparticles 34 200811858

Chemical. Machining treatment can be applied to various treatments, sandblasting. The surface on the side of 24 is roughened, and it is preferable to apply a roughening treatment. After the second substrate 22 is manufactured, the surface on the side where the visible recording layer 24 is formed is chemically treated. The surface of the substrate 22 formed on the side of the visible information recording layer 24 is roughened. For the chemical treatment, the following treatment may be applied: a solvent is applied to one surface of the second substrate η after molding, or is melted by a fog of ruthenium. The solvent is an organic solvent such as hydrazine-hydrazinamide, and examples thereof include an acid-based agent of nitric acid and jm·酉石瓜瓜. The desired thickness can be obtained by adjusting the normality of the acidic solvent as described above or by adjusting the coating time. The first reflecting layer 20 and the second reflecting layer 26 are provided adjacent to the digital information recording layer 18 and the visible information recording layer 24 in order to enhance the reflectance during information reproduction. The light-reflecting substance which is a material of the first reflecting layer 20 and the second reflecting layer 26 is a substance having high reflectance to laser light, and examples thereof include Mg, Se, γ, Ti, Zr, Hf, V, and Nb. , Ta, Cr, Mo, W,

Mn, Re, Fe, c〇, Ni, Ru, Rh, pd, Ir, Pt, Cu, Ag,

Au, Zn, Cd, A1, Ga, In, Si, Ge, Te, Pb, P〇, Sn,

Bi special metal and semi-metal or stainless steel. These substances can be used alone, 35 200811858

ZJ /4JplT may be used in combination of two or more types or as an alloy. Preferred among the above materials are Cr, Ni, Pt, Cu, Ag, Au, A1 and

No, steel. Particularly preferred are Au, Ag, Al or alloys thereof, preferably 疋Ag, A1 or alloys thereof. The reflective layer 2 and the second reflective layer 26 can be formed on the digital information recording layer 18 by, for example, vapor deposition, sputtering, or ion plating, and can be recorded in the digital information recording layer 18 On layer 24. The layer thickness of the first reflection layer 20 and the second reflection layer 26 is in the range of 10 mm to 300 nm, preferably in the range of 5 〇 mn to 2 (10) plane. (Adhesive Layer 28) The adhesive layer 28 is a layer for bonding the second layered body 12 and the second layered body 14 in the figure, and is located between the first reflecting layer 20 and the second reflecting layer 26. For the adhesive of layer 28, well-known purple can be used; (Visual Information Recording Layer 24) The optical recording medium 10, as described above, has a visual information recording layer 24 on the side of the digital information recording layer Uf. In the visual information recording layer 24, the visual information desired by the user such as graphics and patterns (visually available). The visually identifiable record recorded on the visual information recording layer 24 includes text (rows), patterns, and visually identifiable information. Visual information, including the visual information expected by users such as text # 斤, specifically can be listed: the name, : = thumbnail of the graphic content (thumbnail), related patterns, design: Beixun, rights information, record date and time, record Method, wood, and works. Recorded format, strip 36 200811858 /^jpn, etc. In addition, the text information, can be listed: the period designation information, the number of times the information can be specified: information, layer designation information, user-specific information, and; copyright number information, manufacturing :: News, f ^ Mbe said, information, sales money sellers, ς = # ^ news, lock sales, news, use number information.政贝 λ, product user information visual information recording layer 24, if the image information such as characters, images, patterns, etc. can be recorded by laser recognition. The visual information is clearly formed by the riding of the laser light. The recording layer 24 preferably contains a pigment compound. And = is better to make the number of (4) in the recording layer 18, in the case of the color of the month, in view of the cost, etc., the visual information recording layer 24, preferably the color is the use of a coating liquid containing the pigment compound, by Formed by spin coating. 18 ήΠ 1〇★ 'The composition of the digital information recording layer 18 may be the same as that of the visible information recording layer 24, or the constituent components may not be (5), but the digital recording layer Since the characteristics of the respective shirts in the visual information recording layer 24 are the same, it is preferable to make the constituent components different. Specifically, it is preferable that the constituent components of the digital recording layer 18 are recorded. The reproduction characteristics are excellent, and the contrast of the constituent components of the recording layer 24 of the visual information is high. Especially in the case of using a pigment, in the visual information recording layer 24, in terms of improving the contrast of the recorded visual information, it is particularly preferable to use cyanine pigment and indigo in the above-mentioned dyes. Pigment, azo dye, even II metal complex, οχοη〇ι pigment. Further, a leuco-based dye can also be used. Specifically, crystal violet lactone (Crystal Violet Lactone); 3,3-bis(]μethyl-2-methylindole-3-yl)phenylhydrazine, 3_(4_2) is preferred. a phenylhydrazine compound such as ethylamino-2-ethoxyphenyl)-3-(1-ethyl-2-methylindole-3-yl)_4_azabenzoquinone; 3-cyclohexyldecylamine _ 6_mercapto-7-anilinodecane' 2<2-chloroaniline

-6-dibutylamino benzene, 3-diethylamino _6-fluorenyl-7-anilinofluoran, 3-diethylamino-6-methyl-7-diphenylanilinyl Alkane, 2_(2- chloroanilinoethylamino group 0, 2 phenylaminomethyl-6(N-ethylisoamylamino) fluorinated diethylene> Amino-4-chloroaniline oxime , fluorinated compounds such as 3-ethylaminomethylsulfonyl-7-anilinofluoran, 3-methylpropylamino-6-fluorenyl-7-anilinofluoran, etc. 24, which can be formed by dissolving the above-mentioned dye in a solvent-soluble preparation coating liquid, and coating the coating. The solvent can be the same solvent as the solvent 2 used in the digital information recording layer 18 described above. Other additives, coating methods, etc., are the same as in the case of the above information recording layer. The layer thickness of the visible layer I is preferably set to 〇〇1 fat μιη, and more preferably set to 〇〇5 _ In particular, it is preferably set to 0.1 μπι to 0·5 μιη. In particular, the optical recording medium 10 of the present embodiment is characterized in that: visible = recorded f, and the reflectance at the wavelength of Ray (four) is greater than or equal to /〇 L a, b means no visual information The layer 24 records the color coordinates of the visual information recording layer 24 in the state of the visible information of the 38.11858 ZJ /Hjpii information, and satisfies the range of 30^1/^70. The color coordinates are as shown in Table 1, and 1 is 0 (black). ~100 (white), a* is -60 (green) ~+60 (red), b is -60 (blue) ~+60 (yellow). [Table 1] L* White 100 50 0 Black 砵 a Red + 60 0 -60 green b* yellow +60 0 -60 blue

In addition, the values of the LWs of the eight quadrants represented by the coordinates LW are as follows: Table 2 〇 [Table 2] Chromatic Hue L* Half ab* 1 Ming Red Yellow 50 < 0 <0< 2 Ming Yellow Green 50 <0> 0 < 3 bright blue green 50 <0>0> 4 bright blue red 50 <0<0> 5 dark red yellow 50 >0<0< 6 dark yellow green 50 >0>0< 7 dark blue green 50 >0>0> 8 Dark Blue Red 50>0<0> First, since the reflectance at the wavelength of the laser light is 8% or more, the laser light can be easily focused on the visible information recording layer 24, The visual information is rendered on the visual information recording layer 24 while the focus servo is being applied. In addition, since the brightness L* of the visual information recording layer 24 in the state in which the visual information recording layer 24 is not recorded is set to L*$7〇, the visual information recording layer 24 draws the visual information. The difference in brightness between the drawn portion and the unfinished portion is significant. This is related to the improvement in contrast. The other 1 & at L*>70, because the state before the visual information is drawn is too clear, 'so the brightness of the drawn part and the undrawn part after the visual information is drawn = the difference almost disappears, in practice In the use environment, it is also difficult to see because of the amount of light reflected.

In this way, the original target-shaped evil light recording medium 1〇, can use the bright color == two to let the visual information to get the tender light = ^ ^ information record _, 5 % of the laser, better cut It is expected that it is less than or equal to the visual information record shore 24, _^0, and can also satisfy a〇, b^〇. Pigment compound. θ can have the formula (1) as shown in the following formula (1): [Chemical 20]

40 200811858 ^ /^jpn k In formula (1), X] and X2 are carbon or heterocyclic or 6-membered rings. The two ends may be the same or not, and the two may form a 5-member substituent. ^ is a t-valent cation. I is hydrogen or a monovalent visual resource §fl recording layer 24, can be a pigment compound. It has the general formula (2) represented by the following general formula (2): [Chem. 21]

X3 is an atomic group having an acidic core. Is the t-valence in the general formula (2), 11⁄4 ions.

Visual information recording layer; 24 pigment compounds. It may have the formula (3) as shown in the following formula (3): [Chem. 22]

41 200811858 In the formula (3), x4 is an atomic group having an acidic core. r is a t-valent cation. The visible information recording layer 24 may have a dye compound as shown by the following formula (4). General formula (4) · [Chem. 23]

In the formula (4), R3 is a hydrocarbon group having 6 to 20 carbon atoms or a substituent containing ferrocene. The α position is preferred, and the substituent is preferably 3 or more. The visible information recording layer 24 may have a dye compound as shown in the following formula (5). General formula (5): 42 200811858 AD /Hjpil [Chem. 24]

H4 z_ In the formula (5), R4 is a hydrocarbon group having a carbon number of 10 or less, and R5 is a carbon or a hetero atom, and may have a substituent. R6 is a hydrocarbon group or a heterocyclic group. When 6 is greater than or equal to 2, a loop can be formed. Z· is an anion. The visible information recording layer 24 may have a dye compound as shown in the following formula (6). General formula (6): [Chem. 25]

R7 r- along the formula (6), 117 is a hydrocarbon group having a carbon number of 10 or less, and 118 is a carbon or a hetero atom, and may have a substituent. R9 is a hydrocarbon group or a heterocyclic group. When R9 is greater than or equal to 2, a ring can be formed. Z_ is an anion. The visible information recording layer 24 may have a dye compound as shown in the following formula (7). General formula (7): 43 200811858 ZJ> /4jpil [Chem. 26] R24 R25 R26

Bi^ B2 In the formula (7), B2 and B3 are a carbon atom or a nitrogen atom. R21, R22, R23, R24, R25 and R26 each independently represent a hydrogen atom or a monovalent substituent, and R22 and R23 may be bonded to each other to form a heterocyclic ring of 5 to 7 members. A represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. η represents 0, 1, 2 or 3. When η is greater than or equal to 2, a plurality of R25 and 1126 may be the same or different. The visible information recording layer 24 may have a dye compound as shown in the following formula (8). General formula (8): [Chem. 27]

44 200811858 2j/43pil In the formula (8), R3 to R35 are monovalent substituents, preferably an alkyl group having a carbon number Q of 10 or more. Z- is an anion.

The visible information recording layer 24 may have a dye compound represented by the above formula (1), a dye compound represented by the above formula (2), and a dye compound represented by the above formula (3). In this case, the blending ratio of the dye compound represented by the above formula (1) is Ea, and the blending ratio of the dye compound represented by the above formula (2) is Eb, and the formula is as described above ( 3) When the compounding ratio of the pigment compound shown is Ec, it is preferably

Ea = 20~45%, Eb = 30~45°/〇, Ec = 20~35%. More preferably, the thickness of the visual information recording layer 24 is 55 nm to 15 〇 nm. Further, the visible information recording layer 24 may have a dye compound represented by the above formula (4) and a dye compound represented by the above formula (5). In this case, when the blending ratio of the dye compound represented by the above formula (4) is changed to Ed, and the blending of the dye compound represented by the above formula (5) is Ee, it is preferable that Ed is preferable. = 6〇~8〇%, Ee = 2〇~4〇%. More preferably, the thickness of the visual information recording layer 24 is % leg ~ · leg. Further, the recording layer 24 may have a dye compound of the above formula (4), a dye compound of the above formula (5), and a dye compound of the above formula (4). In this case, the blending ratio of the dye compound of the formula (4) is set to be different, and the blending ratio of the dye compound of the formula (5) is set to When the blending ratio of the dye compound shown in (4) is Ef, the ratio is 0 to 80% of E(tetra), Ee==2 to 8%, and Ef=2〇 to 3〇%. More preferably, the thickness of the recording layer 24 is 12 () to 13 〇. 45 200811858 ΔΟ IHDpii Further, the visible information recording layer 24 may have a dye compound represented by the above formula (4), a dye compound represented by the above formula (7), and a compound represented by the above formula (8). Pigment compound. In this case, the blending ratio of the dye compound represented by the above formula (4) is Ed, and the blending ratio of the dye compound represented by the above formula (7) is _, which is as in the above formula ( 8) When the compounding ratio of the pigment compound shown is Eh, it is preferably 疋Ed-50 to 70%, Eg = 1 〇 30 30%, and now = 10 to 30%. More preferably, the thickness of the visible information recording layer 24 is i 〇〇 nm 〜 12 〇 nm. In addition, the visual information recording layer 24 is preferably in the following two aspects, one of which is that the visual information recording layer 24 is a layer that records the visual information by irradiating the laser light multiple times on almost the same execution. Detecting the reflection after the laser beam is irradiated onto the pre-pit 32 to record the visual information; or the other aspect is: the visible poor recording layer 24 is rocking in the radial direction of the optical recording medium 1 and is almost the same The layer on which the visual information is recorded is irradiated a plurality of times on the trace, and the reflected light is irradiated to the pre-pit 32 to detect the reflection of the laser light to record the visual information. # Thereby, the optical recording medium 10 on which visual information can be drawn can be recognized in a drive or a video recorder. In addition, the contrast of the edge image can be improved by multiple illuminations. Hereinafter, the protective layer formed in a preferred embodiment will be described, but it is not shown in Fig. 1. (Protective layer) A protective layer may be provided for physical and chemical protection of the first reflective layer 20 or the digital information recording layer 18. 46 200811858 j/Hjpn Examples of materials that can be used for the protective layer include, for example, vulcanization (zns), sulfur = oxygen cut (ZnS), oxygen cut (10), and dioxide (> Organic substances such as fluorinated town (MgF2), tin dioxide (811〇2), nitriding dream (3), materials, thermoplastic resin, thermosetting resin, uv hardening tree. Further, in the case of a thermocombustible resin or a thermosetting brain, a coating liquid can be prepared by dissolving in a suitable solvent, and then applying the coating to form a protective layer. In the case of uv hardening resin. In these coating liquids, take 1 (the shirt seam a-qing) and add the antistatic agent protective layer material Wei Lu fresh reading additive according to the purpose. Hanging horses · 1 μηι ~ 1 mm range. The riding section of the information (m" ^ has the optical recording medium for reproduction of the Xiang Lei laser recording; the optical recording medium of °, the so-called reproduction special i). Each digital information recording layer 18 is issued (refer to the figure) 4 and FIG. 5; AA & has almost the same configuration as the inner peripheral side of the main surface of the optical recording medium Na, 22 of the above-described optical recording medium, and the fourth substrate, but the second substrate pre-pit area 30 2 ^. The aspect of the printing area 36 is different. In addition, the stacking, and the wire, such as the messy layer body 34, does not emphasize the outer peripheral side of the outer peripheral side of the substrate 22, 47 200811858 ΔΟ /Hjpil is provided with a visual information recording layer formation The area 34, the pre-pit area 30, and the printing area 36. For example, a product name or a manufacturer name is printed on the printing area 36. The printing method includes a screen printing method, and the printing area 36 can be formed in the brother. 2, the innermost peripheral side of the substrate 22 is shielded from the innermost peripheral side of the optical recording medium 1 Qb, thereby improving the user's visual effect. Here, 'from the center of the optical recording medium 10b to the printing area%, the pit Area 30 and visual information recording layer forming area % The distance is first described. From the center of the optical recording medium 10b to the printing area 36, it is preferably 8 _~21 _' the distance from the center of the optical recording medium!% to the outer peripheral end of the printing area 36 rl ~ 23mm (of which, VII (seven). W 疋 2lmm from the center of the optical recording medium 1Gb to the pre-pit area two from Γ 2, preferably 19 mm to 22 mm 'Self-light recording medium 〇iot heart to pre-pit area The distance β' of the outer peripheral end of 3〇 is preferably 22_~25mm (0, r2<r3). The distance from the center of the optical recording medium 1Gb to the inner peripheral end of the visible field 34 is 22 layers. From the center of the optical recording medium l〇b to the outer peripheral end of the 鉾mm, the second recording layer forming region is from the outermost circumference of the 光4<Γ^) mirror optical recording medium (10) (where [information recording method] to the above optical recording Visual information of the media 10 (including various modifications) 48 200811858 Specifically, the use of the optical recording medium, the visual information (10), the recording layer 24, the recording of the recording medium, the recording medium, the recording medium, the recording of the cocoa to the visual information recording layer 24 To two or two: =,

Driven). In this way, an optical recording medium is used to record the axe of 8 V - in order to record to the visual information recording layer 24 and the digital information record = the other layer can be recorded in reverse. The section of the optical recording layer 24 for recording the function of the visual information (image), the feta state is disclosed, for example, in Japanese Patent Laid-Open No. 2002-203321 - in particular, in the present embodiment, by detecting the pre-pit 32, It is easy to detect whether the optical recording medium 1G is the optical recording ship 1G having the visual information recording layer 24; the correction can draw visual information (image) to the visual information recording layer 24 based on the information contained in the pits. The laser output is set to the optimum output; and the visual information (image) can be recorded with high edge characteristics. The optical recording medium 10 having the above-described specific pre-pits 32 can be used for CD purposes (laser wavelengths of 7 to 800 legs), for DVD use (laser wavelengths of 600 nm to 700 nm), for HDDVD or for blue light (laser) Any of the optical recording media drives of wavelengths 380 nm to 450 nm). Since the optical recording medium 1Q has the specific 49 200811858 pre-pits 32 as described above, the signal detection of the optical recording medium 1 can be smoothly performed. Among the above various applications, an optical recording medium 1 having a specific pre-pit 32 is preferably used for an optical recording medium drive for DVD use. In the case of the specific pre-pit 32, even if the laser wavelength is 600 nm to 700 nm, the signal can be sufficiently detected, so that the visual information (image) can be smoothly recorded. [Configuration of Information Recording Apparatus 100] Fig. 6A is a block diagram showing the configuration of the information recording apparatus 100 for recording information on the optical recording medium of the embodiment. As shown in FIG. 6, the information recording apparatus 100 is connected to a main personal computer (PC) 148 and includes an optical head (叩(四)娜叩)1〇6, a spindle motor (!), a radio frequency (Radi). 〇切科(4), RF) is amplified to 150, servo circuit 152, decoder 154, control unit 1, 2, encoder 156, strategy circuit 158, laser driver 160, laser power control packet 162, frequency generator 164 Stepper motor (ste; ping; pping m〇t〇r) 165, motor driver 166, motor controller 168, phase locked loop 'PLL' circuit 170, first in first out (FirstInfirst), FIFO k, body 172, drive pulse generation unit 1, buffer memory (|3Uffer memory) 176 The spindle motor 104 is a motor that rotationally drives the optical recording medium 10 to be recorded, and the rotation is controlled by the servo circuit 152. number. The gambling recording device 1 实施 is, for example, recording at a constant angular velocity (CAV), and thus the spindle motor 104 is rotated at a fixed angular velocity set in accordance with an instruction from the control unit i〇2 or the like. The optical reading head 106 is a unit that irradiates the laser light L to the optical recording medium 10 that is rotated by the spindle motor ι 4, and the configuration thereof is shown in Fig. 2A. As shown in FIG. 7, the optical pickup 106 includes a laser diode 178 that emits laser light B, a diffraction grating 180, an optical system 182 that condenses the laser light on the surface of the optical recording medium 10, and receives reflected light. Light receiving element is. In the optical pickup 106, the laser diode 178 supplies laser light from the laser driver 160 (see FIG. 6) to emit laser light corresponding to the intensity of the driving current. The optical pickup 106 separates the laser light L emitted from the laser diode 178 into a main beam, a preceding beam, and a trailing beam by diffracting the grating 18 ,, and the three kinds of laser beams are transmitted through the polarization beam splitter. (polarization beam splitter) 186, a collimating lens (10), a quarter-wavelength plate 190, and an objective lens 192 are finally collected on the surface of the optical recording medium 10. Then, the three kinds of laser beams reflected by the surface of the optical recording medium 10 are again transmitted through the objective lens 192, the quarter-wavelength plate 190, and the collimator lens 188, are reflected by the polarization beam splitter 186, and are incident through the cylindrical lens 194. Light receiving element 184. The illuminating element 184 outputs the received signal to the RF amplifier 15 (refer to FIG. 6), and the received signal is supplied to the control unit 1 〇 2 or the servo circuit 152 via the RF amplifier 15 。. The objective lens 192 is held by a focus actuator (focus actuat 〇r) I% and a f-rail actuation 11 198, and is movable to the direction of the laser light L and the direction of the optical medium 2 〇. The focus actuator 196 and the circulatory actuator 198 move the objective lens 192 to the wire direction and the diameter 51 200811858 iHjpn direction in accordance with the focus error signal and the circumstance error signal supplied from the SERVICE circuit 152 (see Fig. 6). In addition, the ship circuit 15.2 generates a focus error signal based on the following means and tracking control: based on the light receiving element 84 iv su ", the completion system, the t 184 and the RF amplifier 150 /, Γ p And the tracking error signal, the objective lens 192 is moved as described above. Further, the optical head 106 has a front laser diode m (not shown) that emits the laser light Lsf to receive the laser light.

A current is generated in the monitoring diode that is supplied from the optical pickup to the laser power control circuit 162 of FIG. >, the RF amplifier 150 amplifies the RF signal supplied by the optical pickup 1〇6, for example, by the E_i4 modulation (EFM), and outputs the amplified RF signal to the servo circuit 152 and the decoding device 154. . The decoder 154 performs EFM demodulation on the two EFM modulated RF signals supplied from the RF amplifier 150 during reproduction to generate reproduced data. The servo circuit 152 supplies: an instruction signal from the control unit 1〇2, an FG pulse signal supplied from the frequency generator 164 at a frequency corresponding to the number of rotations of the spindle motor 104, and a radio frequency generation from the RF amplifier 15〇. number. The servo circuit 152 performs rotation control of the rotation axis 104 and focus control and tracking control of the optical pickup 1〇6 based on these supplied signals. The spindle motor 104 in the case where the recording surface (digital information recording layer 18) of the optical recording medium 10 is recorded, or when the visual information recording layer 24 (refer to FIG. 1) of the optical recording medium 10 forms visual information The driving method can be a method of driving the optical recording medium 10 at a fixed angular velocity, that is, a Constant Angular Velocity (CAV), or a method of rotationally driving the optical recording medium 10 at a fixed recording linear velocity, that is, a constant linearity 讳52 200811858 /Hjpil Any of the ConstantLmear Velocity (CLV). The information recording device loo is, for example, a CAV method, and the servo circuit 152 causes the spindle motor 104 to be rotationally driven at a fixed angular velocity indicated by the control portion 102. The snippet m stores the information (recorded data DW) supplied from the main Ρα48 and the digital information recording layer 18 to be recorded on the optical recording medium 10, and the visual information recording layer which should be formed on the optical recording medium 1Q. Information corresponding to visual information (image data Dg). Then, the data stored in the memory 176 is stored! %) is output to the encoder 156, and the image data Dg is rotated to the control unit 102. The encoder 156 efm-modulates the recording material Dw supplied from the buffer memory 176, and outputs it to the strategy circuit 158. The strategy circuit 158 performs time axis correction processing or the like on the EFM signal supplied from the encoder 156, and outputs it to the laser driver 160. A laser driver 160 drives the laser diode 178 of the optical pickup 106 based on the signal modulated by the strategy circuit 158 corresponding to the recording lean Dw and the control of the laser power control circuit I62. Clamping • Figure 7). The multi-field power control circuit 162 is for controlling the laser power radiated from the laser diode 178 (see Fig. 7) of the optical pickup 丨〇6. Specifically, the =radiation power control circuit 162 controls the lightning light L from the optical pickup $ at a value that matches the target value of the optimum laser power indicated by the control unit 102. The drive driver 16〇. The laser power control using the two-shot power control circuit 162 performed here is a feedback control, and the "Hybrid feedback control" is performed by using the current value of the front end of the optical pickup 106 to monitor the terminal of the terminal 53 200811858 ^/Hjpn. The control is performed so that the laser light L reaching the target intensity is emitted from the optical pickup 106. The image data Dg supplied from the main PC 148 and stored in the buffer memory 176 is supplied to the first-in first-out memory 172 via the control unit 1〇2, and stored in order. Here, the image data stored in the FIFO memory 172

Dg' is the image data supplied from the host PC 148 to the information recording apparatus 1

Dg' contains information such as the following. The image data Dg is used to form visual information on the visual information recording layer 24 of the disc-shaped optical recording medium. As shown in FIG. 8, the center of the optical recording medium 10 is described. D〇 is the information of the gray scale (shade) of the n coordinates (the black dots in the figure) on the plurality of concentric circles at the center. The image data Dg is information describing the information indicating the gray scale of each of the coordinates, and is a coordinate point Ρ11, ρΐ2···ρ1η belonging to the circle on the innermost circumference side, belonging to the same. The coordinates of the coordinates of the circle Ρ21, Ρ22···Ρ2η on the side of the outer circumference, and the order of the coordinates of the circle on the one side of the outer circumference, indicate the gray scale of each coordinate point of the ancestors of the circle to the outermost circumference, indicating that The information on the gray scale of each exposed S mark on the polar coordinates is supplied to the FIFO Caution 172 in the order described above. In addition, Fig. 8 is a view schematically showing the positional relationship of each coordinate in a clear manner, and the actual coordinates are more densely arranged than the figure. Further, in the main PC 148, the data of the 5th bit map is converted into the data of the polar coordinates as described above by using the image mapping form or the like which is generally used to form the photosensitive surface of the optical recording medium 10. Transfer the image data of the self-contained PC148 # to the second record" 54 200811858 ^ /Hopn 100 can be recorded first _- :==; =L most:;:= Figure: _ used clock Signal output to drive pulse; = table not - information on the gray scale of a coordinate

The drive pulse generating unit 174 generates a drive pulse such as an irradiation timing of the incident light L by the 忐 忐 & Here, the drive pulse generating unit 174' generates a drive pulse having a pulse width corresponding to the information indicating the gray scale of each coordinate supplied from the branch memory 172. For example, in the case where the gray scale of a certain coordinate is large (in the case where the density is large), as shown in FIG. 9a, an increase of 5 recording levels is generated (second intensity: optical knowledge of the visible information recording layer 24). On the other hand, for a coordinate having a small gray scale, as shown in FIG. 9B, a drive pulse for reducing the pulse width of the recording level is generated. Here, the recording level is a power at which the optical characteristics of the visible information recording layer 24 change and the reflectance significantly changes when the laser power of the level is irradiated onto the visible information recording layer 24 of the light recording medium 10. In the case where the drive pulse as described above is supplied to the laser driver 160, the recording position of the laser light L is irradiated from the optical pickup 106 at a time corresponding to the pulse width. Therefore, in the case where the gray scale is large, the laser light L having the long width of the recording level is irradiated, and the reflectance changes in a larger area of the single 55 200811858 region of the visible information recording layer 24 of the optical recording medium 10 As a result, the area is visually recognized as a concentrated area. The reflectance of the area (unit length) in the shovel is: the variable area: the variable length, thereby displaying the gray scale indicated by the image data Dg. In addition, when the feeding level (first intensity) is the visual information recording layer of the laser power recording medium 10 of this level, the optical level of the optical recording medium 10 does not change, and the reflection level is not required. In the area, the laser light that does not illuminate the recording level: _, 卞 and the laser light L can be. The heart, the radiation-based level generating unit 174 generates a driving pulse based on the information indicating the gray scale shown in the above-mentioned mouth, and performs the laser power control of the power 162 or by the servo (4): 52 Water coke system and tracking control. Table (10) information on the gray scale, and insert the pulse of the second::::=, or insert the ship's quasi-pulse. For example, as shown in Fig. 1 〇A, the helmet 7 α . , in order to be based on the image data Ds Φ 宜 广 and Τ 1 ", τι照二 = the first laser, and the period T1 In the case of a long-term ST-long drought cycle ST, the time of the self-generated record === over the servo job ST, insert the second = _ to the take-off pulse (SSP1). There is a servo position of the horse t On the other hand, as shown in Figure 10] B, the gray scale of the coordinates shows the visual resource t 1 hundred '" 豕 image data % in the period of ST irradiation servo level laser 'light = greater than or equal to the servo week In the case of the journal field first L, the generation of 56 200811858 Wei cycle ST is followed by 'insertion of the servo-on pulse (SSP2) with the record bit of the short time 1. (4) The above-mentioned laser by the laser power control circuit 162 The power control ^ - t in ι * (current corresponding to the intensity of the irradiated laser light) is supplied from the front monitor diode of the laser light L received from the optical reading of the laser diode. More, ", as shown in Figure 11, the laser power control circuit 162, will be dreaming

The laser light received by the previous monitoring unit 2 is 200. [strong ^ relative, miscellaneous sampling and holding (_ple secret) (s2Qi, s2^ degree is written in the laser light L at the illumination recording level, ie,于生ΐίΐ ^ 9A^@ 1〇B) ? Guang 2: n° value) and the recording level supplied by the control unit 102 is controlled to perform the laser work in such a manner that the sample value becomes the target value; When the laser light L of the servo level is irradiated, that is, when the raw pulse (see FIG. 9A to FIG. 1) is used, the sample is held at the "water level" value and the target level of the service level supplied by the control unit 102 is controlled. The laser power is made in such a manner that the sample value becomes the target value. Therefore, if the pulse of the recording level or the servo level does not continue to be outputted for a long time of the servo period st (sample period), it is not limited to the map. The contents of the V material Dg, such as the above-described forced insertion servo off pulse ssp and the servo on pulse ssp2, can control the laser power as described above. 57 200811858 In addition, the servo off pulse SSP1 is inserted as described above, and the laser power is also used for the tracking control by the feeder circuit 152. That is, difficult to control and gather I: work or

The light-receiving element 184 of the optical pickup 106 (see Fig. C, the reflection (reflected light) of the body 10 of the laser beam L emitted from the laser diode 178.

Here, Fig. 12 shows an example of a signal received by 184 when the laser light L is irradiated. As shown in Fig. 12, the reflected light at the position = laser light L contains the peak portion of the peak when the laser light L rises, and the element of the shoulder portion K2 whose position remains fixed; -=, 73 and 5 hearts The portion indicated by oblique lines in Fig. 12 is the energy that can be used to make the visual information recording layer into an image. ^ 乂 And, it is generally considered that the energy used for image formation of the visual information recording layer 24 is not always stable. The value varies depending on various conditions. Therefore, it is considered that the shape of the oblique line portion fluctuates at any time in FIG. 12, that is, the reflected light of the laser light L at the recording level is large, and noise or the like is often obtained, and stable reflected light is not necessarily obtained. If the reflected light is used, there is a concern that the accurate focus control and the tracking control are hindered. Therefore, when the laser light L of the recording level is continuously irradiated for a long time as described above, there is a concern that the servo level cannot be obtained. The reflected light of the laser light L cannot be accurately focused and controlled. Therefore, the servo off pulse SSP1 is inserted as described above, whereby the counter of the servo light L can be periodically obtained. Light, and based on the obtained reflected light and the focus control and the implementation of the control cycle execution in the case where the optical recording medium feed line visible tribute information recording layer of the information recording layer of 1〇 58200811858; Bit information recording

Grooves (guide grooves), etc. are tracked. Therefore, in the present embodiment, the target value of the system is set to the mosquito value (the offset voltage fixed in advance): the control of the second is not only applicable to the visible; the case where the visual tribute is formed, and the application can also be applied. In the case where the digital information layer 24 forms visual information, that is, when riding the light L, the material that changes the reflectance and the color of the color is used for the number = only = then the information is scorned The recording layer 24 is the same, and the visual information can also be formed in the digital information two=8. Thus, if the digital information recording layer 18=layer=visual information, then the portion where the visual information is formed is processed by the silk method, so it is better. It is pre-divided into (4) recorded = and the area where the visual information is formed. A. In addition, as described above, the time for inserting the servo off pulse SSP1 or the turn-on pulse SSP2 is preferably controlled by the laser power. The implementation of various servos of the circumstance control and the focus control does not cause obstacles. In the range of 6 small tables, by shortening the insertion time, it is possible to have almost no influence on the opened visual information. The various servos described above. The PLL pulse gas number of the frequency corresponding to the rotational speed of the spindle motor 1〇4, which is terminated by the frequency generator 164, is multiplied by the phase lock circuit 170 of Fig. 6 to output a clock signal which can be used to form visual information. The frequency generator 164 uses the reverse current obtained by the motor driver of the spindle motor 1〇4 to rotate the FG pulse signal of the frequency corresponding to the number of revolutions of the rotary shaft. 0 59 200811858 For example, as shown in FIG. 13A, The frequency 104 is rotated by the generator 164, 艮, earth; when the optical recording medium 10 is rotated Ί in the case of the I-axis motor G pulse, as shown in Fig. 13B, the pulse multiplication is generated. Pulse signal (for example::: circuit 170 rotates the frequency, the optical recording medium 10 rotates in the i week, the output is 5 times of the FG pulse street signal, and the output is rotated by the rotary shaft motor 1〇4 = 40 pulses) The clock signal of the frequency corresponding to the speed. Thus, the clock signal of the rotation of the body 10 is self-locked loop circuit 17 pulse signal times 172, and the clock signal indicates that the memory is first out every _, y, and month Turning a certain gray angle of the coordinates of a certain angle to the white matter f10 The cyclone m is rotated out to the drive pulse generating portion 17H, and the clock signal is multiplied by the rotation of the π + + ί, but the motor is stabilized and the motor is used as the spindle motor 104.                                                     S is a motor for moving the optical pickup 1 to 6 in the radial direction of the optical recording medium 1G provided in the optical recording medium 10. The motor driver 166 corresponds to the pulse signal supplied from the motor controller 168. The stepping motor 165 is rotationally driven. The motor controller 168 generates a pulse signal corresponding to the movement amount or the movement direction based on the movement start instruction including the movement direction of the optical pickup 106 in the radial direction and the movement amount, which is instructed by the control unit 102, and outputs the pulse signal corresponding to the movement amount or the movement direction to the motor driver 166. . The stepping motor 165 can move the optical pickup 106 to the radial direction of the optical recording medium 1 and rotate the optical recording medium 10 by the spindle motor 104 by 60 200811858, so that the laser head of the optical pickup 1 〇 6 can be irradiated. The components are moved to the respective positions of the optical recording medium 1 to constitute an irradiation position adjusting device. The control unit 102 includes: a central processing unit (Centml pr〇cessing)

Unit CPU), Responsible & Resin (Rea (j 〇niy Memory, ROM), Random Access Memory (RAM), etc., control the information recording apparatus 1 according to a program stored in the ROM The device parts L are configured to centrally control the recording processing of the digital recording layer 18 of the optical recording medium 1 and the image forming processing of the visible information recording layer 24 of the optical recording medium. [Operation of Information Recording Device 1] Next, the operation of the information recording device (10) will be described. > As described above, the information recording device 1 is configured as follows: The recording layer records the recording material Dw of the music feed such as the main supply, and can form the visual recording layer 24 of the optical recording medium 1Q to correspond to the image data supplied by the host PC 148. Information: Below the heart, the operation of the greedy recording device 00 that can process information records and visual information formation is described with reference to FIG. 14 to FIG. 22 _. In the setting 100, the optical recording medium 1 is set, the 2 part is controlled to control the optical pickup (10), and the like, and the optical recording medium of the optical recording head 10 that is disposed opposite to the optical pickup 106 is detected. Step Sal. For example, in the case of DVD-R, detect the presence or absence of a pit signal or a pre-recorded signal, and in the case of DVD+R, detect the pre-groove address (Address in Pregroove, Whether or not the ADIP is present. If the information is not recorded, the optical recording medium is not recognized.

m Here, in the case where the optical recording medium 1被 is set, for example, in the case of the DVD-R, the land pre-pit signal or the pre-recorded signal is detected, and in the case of the DVD+R, the ADIP is detected. It is determined that the optical recording medium 10 is disposed in such a manner that the digital information recording layer 18 is opposed to the optical pickup 1〇6. The control unit 102 performs control for recording the recorded data supplied from the host PC 148 to the digital information recording layer a (steps) Criminal). The control for recording the recorded material Dw performed here is the same as that of the previous optical recording medium recording device (DVD-R or DVD+R), and therefore the description is omitted. On the other hand, the illuminating light is irradiated to the innermost portion of the optical recording medium 1 被 which is set to be light, and the pre-made optical recording medium (7) for detecting the visual information is detected. In the case of the pit signal, the recording medium I 24 is not aligned with the * reading head 106, and the control unit withdraws the disc to determine whether or not the disc can be obtained. Step (6). In addition, the disc ID of the optical recording "" may be included in the pre-pit signal. For example, as shown in FIG. 16, along the optical recording medium 10, the sheet is not made of the second pin layer 24 side. The circumference of the outermost peripheral portion describes the portion of the outermost portion of the dish; "visual information. In the example of Fig. 16, along the seat m, the above-mentioned code (disc coded shell) is formed with respect to the seat circumference. The corresponding length of the reflective area 202a and the non-reflective area 62 200811858 2〇2b are used to describe the disc ID in the visual information recording layer 24 of the optical recording medium ι. The control unit 1〇2, along the optical recording medium 1〇 The outer circumference of the circumference, tracking the illumination position of the laser light 1 of the optical pickup 106 Therefore, the disc ID can be obtained from the reflected light. Therefore, as shown in FIG. 14, when the disc is not obtained, it can be determined that the optical recording medium 1 does not have the visible information recording layer 24. Ordinary (CD_R 'DVD_R # ). In this case, the 'control unit 1〇2 • μΓ, 5 recorded media is an optical recording medium that cannot form visual information (step Sa4)' and is used to notify the user of the intention, etc. The processing of the disc m is obtained from the optical recording medium 1G, and the PC 148 generates an image forming instruction including the image data Dg (step Sa5). Then, 'steps, for example, generate an image, (4) (10)' The initialization control for forming the visual information on the optical recording medium 1 by the greedy recording layer 24 (step 5 1 〇 2 5 152 α is rotated at a predetermined angular velocity, which will be used to make the optical pickup 106, / / recording medium 1G The initial position of the most control side of the control direction is not output to the motor controller 168, and the stepping motor 165 is driven. In the fourth generation control, the control unit dies, and the pair of servo circuits 152 indicate the focus control. Target value, so that the logarithm of the log is recorded by two rf signals The beam-pointing medium 10 has a visible information recording layer 24. The description of the light-curtain (4) focus control is more specific 63 200811858 /4^ρΐτ <3 as described above by the focus control of the servo circuit 152, The signal is output based on the signal output from the light receiving element 184 of the optical continuation head 106. When the information is recorded on the information recording layer 18 of the optical recording medium 10, the servo circuit (5) drives the focus actuator 196 (refer to Fig. 7) so that The four regions 184a and mb of the light receiving element 184 shown in Fig. 17 receive circular reflections at the center of the sum and md (see the circle 2〇4a of Fig. 17). That is, each of the light receiving amounts of the regions 18, 184b, 184c, and 184d is set to Fa, Fb, Fc, and other circumstances.

In the case where the focus actuator 196 is driven so that (Fa + Fc) _ (sun + F • =0 〇 other aspects, when the visual information recording layer 24 of the optical recording medium 10 forms visual information, as described above Focusing control is performed so that the laser light L having a larger diameter when the information is recorded by the digital information recording layer 18 is irradiated to the visible-difference recording layer 24. The shape of the light-receiving element received by the light-receiving element 184 shown in Fig. 17 is a circular shape. (Refer to the circle 2〇4b and 204c in Fig. 17), the spot size of the laser light L is larger than that of the above circle 2〇4a, so the servo circuit 152 drives the focus actuator 196 so that The reflection of the rounded shape (refer to the circle 204b and 204c of Fig. 17) is accepted by the light receiving element 184. That is, the focus actuator ι96 is driven to satisfy (Fa + Fc) - (Fb + Fd) = M (Μ Therefore, the servo circuit 构成 constitutes a beam spot control device. In the above-described initialization control for forming visual information, the control unit 102 sets a Μ (not 〇) indication to the servo circuit 152, thereby When the digital information recording layer 18 records information, check the larger mine. The light is emitted to the visual information recording layer 24 of the optical recording medium 10. Thus, the visual information of the optical recording medium 10 is recorded on the digital information recording layer 18 when the information is recorded as the visual information. Thereby, the laser light L having a larger spot diameter when the following effects are recorded can be obtained.

In other words, in the present embodiment, when the I digital information recording layer 18 is made to be visible, the laser light is also irradiated with the laser beam L: the same as the optical recording medium ti; Media 1. Visually visible, all areas of the recorded layer 24 form visual information. Despise the shell. If it is =, it will be described with reference to Fig. 1 δ Α and Fig. 1 δ Β - side. Laser beam L beam # Bs^ ^式7", if the comparison is not "," the worker's father is small (when the day is large (see Figure 18A), then /:, θ,

: In the case where the area of the image forming object is small in the beam spot diameter BS at the beam spot diameter BS, the optical recording medium 10 must be made for the image forming object. In the case of 18A and FIG. 18B, in the case of a larger case, the rotation is rotated for 6 weeks), it takes a lot of hearts to form an image, and for the above reasons, the #recording device is employed, in the form of σ砚Beixun's exposure to laser light with a larger diameter than the information recorded. In addition, in the initialization control for image formation, in order to make the recording level corresponding to the taken disc j ID and the servo level of the laser light, the head 106 is emitted by the control unit 1G2. Values are indicated for each shot power control circuit 162. That is, in the R〇m of the control unit 〇2, the corresponding plurality of discs 65 200811858, the recording level, and the recording position corresponding to the disc id obtained by the target δ·金 of the ship quasi-ridge are stored. The target values are indicated to the laser power control circuit 162. Tian Qiao" knife 卞 by. So, setting the power target value based on the disc ID is based on the following

The characteristics of the pigments of the visual information recording layer 24 are different depending on the light. In the case where the characteristics of the pigments are different, the optical power of the degree of power f can change the reflectance. . Therefore, by irradiating the recording layer 24 to an optical recording medium 10, a certain recording level of the laser light L is irradiated, and in the case where the rate of the & ^ area is sufficiently changed, the other optical recording version is # In the case where the visible recording layer 24 is irradiated with the same recording level, the reflectance of the irradiated area may not be changed. Therefore, in the case of Benbey, for each optical recording medium corresponding to each ID of each of the disc IDs as described above, the recording level and the servo position for accurate image formation are obtained in advance by experiments. Quasi-target value. Then, 'the target value to be obtained is matched with each disc ID, that is, it is tabulated and pre-accommodated in R〇M, which can be based on the various visual information, eight/, and 10 visual information as described above. The characteristics of the recorded layer for optimal power control. If the initialization control as described above is performed by the control unit 102, then the L line is used to form visual information for the visual information recording layer 24 of the optical recording medium. That is, as shown in Fig. 15, first, the control unit 1〇2, the autonomous pCl48 66 200811858 transfers the supplied image data Dg to the first-in first-out memory 172 via the buffer memory 176 (step Sa7). Next, based on the FG pulse signal supplied from the frequency generator 164, the control unit 102 determines whether or not the predetermined reference position of the optical recording medium 10 rotated by the turning motor is the irradiation position of the laser beam L through the optical connector 106 (step Sa8). Here, with reference to Fig. 19 to Fig. 21, γ is described with respect to the detection method of whether or not the predetermined reference position and the irradiation position of the laser light L pass through the position. As shown in Fig. 19, the frequency generator 164 is rotated by one rotation of the spindle motor 1〇4, that is, during the rotation of the optical recording medium 10, and the rotation is performed (8 in the example of Fig. 19). ) FG pulse. Therefore, the control unit 1〇2 uses any one of the FG pulses supplied from the frequency generator 164 as a reference pulse, and outputs a reference position detection pulse synchronized with the rising timing. Thereafter, the reference position detection pulse is rotated in synchronization with the rising timing of the number of revolutions per week (the eighth in the example of Fig. 19) WG pulse, and the reference pulse is rotated. In this way, a pulse signal for detecting the reference position is generated. By generating such a reference position detecting pulse, it is possible to recognize the timing at which the pseudo-position position detecting_pulse is generated, and the irradiation position of the laser light l of the optical head office is set to the timing of the base axis of the Guangjing ship 1G. In other words, as shown in FIG. 20, the irradiation position of the #light L of the optical pickup 1 (6) at the timing of the initial reference position detecting pulse generation is indicated by a thick line (referred to as a symbol 2〇6). The line, the optical pickup can be moved in the radial direction, so that the position at which the irradiation position can be obtained is represented by a line), and the reference position detection pulse generated after the rotation of i is generated. In the ^^ τ of the read head 1 (10), the position of the position ρ, which is indicated by a thick line, is the image of FIG. 20, and the path of the reference position detection pulse is first generated in the radial direction of the irradiation position (10). As described above, the optical recording medium control unit reference position detecting pulse can be used to detect the reference position of the recording medium 10 of the laser light. ”, 耵 position through the light one, in Fig. 20, the dotted line (to form a reference position detection pulse to the line): before the compensation pulse, the laser light is based on the above reference position detection Pulse, recorded on the media H) almost the same as the trace. The almost = eve, the light record

Second, the body 10 rotates, approximately concentric,: Bu is the S error by the domain, and increases the irradiation area of the laser light. In addition, it is shown that the contrast ratio of beta is different from that of beta, and the number of rotations at different traces is due to the Japanese patent special 203321 No. 2:: method, preferably in the laser light: _光赖髓1G The following method is used to illuminate the light. The same execution of Shangyicheng, and the lightning rate", === the shaking frequency of the head/06 is defined as the swing width of the factory swing frequency first _106 (the distance between the two ends) is defined as the swing 68 200811858, the swing Frequency; almost the same trajectory is defined as "overwrite". Lift 50_, cover the nest time ° '牛 2〇〇Hz' swing width, for example, as shown in Figure 5: dry, such as 8 times. After the image-forming instruction is received by the method as described above, the reference position of the irradiation position is determined by the laser variable R incremented by 1 and then 102' to the Sal0 indicating the number of rotations. ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) The step S_ is performed in the case of the optical 斟, in the case of the tenth month of the present reading, the control information recording layer 24 is irradiated with the laser light L and the body is 1 〇, and the visual squeak is more specifically, the control unit has the above-mentioned reference position detection. _ Laizhi = 17. The output clock signal is synchronized, from the first-in-first-out. With this control, as shown in Figure Mi, the advanced St-matrix receives the gray scale of the pulse H supplied from the phase-locked loop circuit 17〇. The information of the degree is output to the drive pulse generation unit 174, and the pulse generation unit 174 generates a drive pulse corresponding to the gray: pulse f degree indicated by the information, and outputs it to the laser driver 160.

The optical pickup 106 irradiates the visible light L of the optical recording medium G to the visible light recording medium 24 at a time corresponding to the gray scale of each coordinate, and the reflectance of the irradiation region is changed. Formed as shown in Fig. U 69 200811858 ^ j ί^όρη visually represented by mode. ^ 104 The movement in the area indicated by c in the circumferential movement 22 is to illuminate the recording position; thereby, as shown in Fig. 22, the reflectance change of different areas is generated according to the gray scale degree. The ash=, while controlling the recording position between the respective areas C, can be used as the visual recording corresponding to the image data Dg on the optical recording medium 1G t. According to the control of the laser-controlled lion controlled by the image data Dg, the following::, given, sent to the FIFO: 纾 media: 1 06 laser light L Whether or not the irradiation position passes through the reference position of the optical medium η 10, the first = R increment is detected. As a result, the variable R becomes an even number: = Each part of the control device is moved to stop the formation of t == visual information using the above-described laser light (step Can). More specifically, a control is performed to turn off the gray scale of each tile to be output to the drive pulse generating portion 174 by turning on the (four) phase loop to the W pulse (five) step. That is, the control unit 102 controls the visual information recording layer 24 of the control unit 102 to illuminate the recording level. After the periodic gate becomes visible, the laser that is rotated on the optical recording medium 10, i L=r, causes the reflectivity of the can be changed to 106 to be indicated by the time dan = Mashe 168 to make the optical pickup The spin is moved to the outer peripheral side of the direction (step sai 3 ), and the stepping motor is driven according to the movement, and the first step is to move to the outer peripheral side. The 1% of the reading head moves to the optical recording medium 1〇 in the radial direction, and the visible information recording layer 24 is formed so that the irradiation position of the optical pickup of the optical pickup 1() 6 is spaced. Moving on the surface of the optical recording medium 10 is necessary for the formation of the image. 1 In order to - the more quality of the map, will be like the description of the fresh-headed ship in the radial direction _ Buri, almost the same length as the riding light _ body 1G laser light l # BS, then in the light On the surface of the recording medium ω, the laser light L is irradiated almost thermally, and a higher quality image can be formed. Further, due to various reasons such as the nature of the visual information recording layer 24, there is a case where a color is generated in a region larger than the beam spot diameter BS of the irradiation. In this case, the unit movement amount is determined in consideration of the width of the color development region. It is sufficient that the adjacent color development regions do not overlap. In the present embodiment, the beam point #耶 (e.g., 2〇_f right) is increased as compared with the case where the information recording layer 18 is recorded to the digits 71 200811858, and therefore, the control unit 102 controls the motor controller 168 to drive the v. The motor 165 is advanced so that the optical pickup should move toward the fiscal direction with a certain length of the beam spot. In addition, in recent years, the stepping motor 165 has been controlled by the microstep technique to control the amount of movement in units of 1 G. The stepping motor 165 causes the optical pickup _ to be in the range of 2G_

The direction of movement can be achieved. When J is performed to control the optical head to move in the direction of the specific direction, the control unit 1〇2 changes the laser light L to the laser power control circuit, and the target redundancy is two = two f / pro-shooting edge (four) speed maintenance type you first record and turn, while illuminating the laser light L _ C AV side: 乍 is the way to form visual information, as above two: = then the line speed becomes larger. Therefore, when the target is moved in advance, the target value of the recording level is changed so that: the light is emitted = i η , whereby the visual information recording layer of the recording medium 10 can be read, even if the linear velocity is changed. The intensity of the laser power. The reflectance of 4 can be sufficiently changed as described above. 'If the optical flip 1G6 is controlled to the target value in the radial direction, the control unit 2 2 can be visually m to determine whether or not an unprocessed map is supplied to the drive. When the pulse generation unit 174 D: g and the image data ～, the processing is terminated like the Bec Dg, and the other is not provided to the drive pulse generation unit (7) 72 200811858

In the case of the ZJ /4JpiI image data Dg, returning to the step of Fig. 15, the processing for forming the visual information is continued. In other words, the control unit 1〇2 transfers the image data Dg to the FIFO memory 172 (step Sa7), and determines whether or not the irradiation position of the laser light L passes through the optical recording, and the reference position of the body 1G (step (10)). Next, the variable R indicating the number of rotations is incremented by i (step) by the reference position %, and it is judged whether or not the variable R is an odd number (step SalO). Here, when the variable R is an odd number, the control unit 1〇2 controls each part of the apparatus to irradiate the laser light L (10) into the above-described visual information. When the variable r is an even number, the 彳τ is used to form a visible view. The laser light of the information is irradiated (the laser light of the servo level is irradiated), and the optical head 106 is controlled to move in the radial direction as described above or to control the target value of the recording level. In other words, when the control unit 102 performs irradiation (including recording level) of the laser light L for forming an image on the optical recording medium ι during a certain rotation, control is performed so as to be in the next rotation. Irradiation of the laser light L for forming an image is not performed, and in the next rotation, the optical head 1 〇 6 _ movement control in the radial direction or the like is performed. In this way, the control for moving the optical pickup 106 or the control of changing the recording level target value is performed during the rotation in which image formation is not performed, and the power value of the laser beam is irradiated with the control target position or the intensity of the irradiated laser red. In the meantime, visual information is not formed, and the irradiation of the laser light 1 for image formation can be performed after the irradiation position or the intensity of the laser light L is stabilized. Therefore, it is possible to control the deterioration of the quality of the visual information formed by the movement control of the optical pickups 1 to 6 in the radial direction as described above. 73 200811858 Li ί^όρπ According to the above information recording apparatus, there is no need to wait, as long as it is possible to use the apparatus 9 for optical recording of the digital information recording, etc.; the light of the recording layer 24 of the beibei recording layer 24 The visual information recording layer 24 is formed by the visual information recording layer 24, and the visual information corresponding to the image data Dg is formed. When the field is illuminated ^ ί, shape! 1 控制 The laser light L is controlled based on the clock signal, and the edge of the pulse is generated by using the FG pulse according to the rotation of the spindle motor 104, that is, according to the "= generation of the optical recording medium 1 (), therefore, The position information is poor from the side of the optical recording medium 1 : the irradiation position of the laser light L is grasped in the recording device 100. Therefore, the cabinet = the shell I has been loaded with f _, and it is not limited to use the following optical recording medium ^ ▲ The recording medium 10 is specially processed to form a pre-groove (guide groove) of the visible information recording layer 24, and the visible information recording layer 24 may be shaped even if the pre-groove or position information is not formed in advance.可视2 image data corresponding to the visual information. I. The figure is followed by the digital information recording layer 18 to record information (digital information). In the case where the digital information recording layer 18 is a pigment type, first, The recorded optical recording medium 10 is irradiated with laser light L from the optical pickup 106 at a predetermined recording linear velocity. By the irradiated laser light, the pigment of the digital information recording layer 18 absorbs the light and locally heats up. King's pit The optical characteristics are changed, thereby recording information on the digital recording layer 18. The recording waveform of the laser light L can be a pulse train or a pulse when forming one pit. The important one is relative to Actual length to be recorded (concave 74 200811858

/4JpiI The length of the pit). The pulse width of the laser light L is preferably in the range of 20 to 95%, more preferably in the range of 30 to 90%, particularly preferably in the range of 35 to 85%, with respect to the actual length to be recorded. Here, in the case where the recording waveform is a pulse train, the sum is the above range. The power of the laser light L varies depending on the recording line speed, and the recording line speed

In the case of 3.5 m/s, it is preferably in the range of 1 mW to 100 mW, more preferably in the range of 3 mW to 50 mW, and particularly preferably in the range of 5 mW to 20 mW. Further, in the case where the recording linear velocity is doubled, the power of the laser light L is preferably in the range of 21/2 times. Further, for the recording density of the Tynan, the NA (numerical aperture) of the objective lens 192 used in the optical pickup 1 较好 6 is preferably 〇·55 or more, more preferably 0.60 or more. Range of ou nm In the present embodiment, a semiconductor laser having an oscillation wavelength of 35 〇 nm/ can be used as the laser light L. $ 明^^' is the mouth of the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the case of ruthenium or cross-linking, the material is composed of the above-mentioned materials, and the phase change of the crystal phase and the amorphous phase is repeated by the irradiation of Kosa. θ field refines the pulse of the laser light L concentrated for a short period of time, and the recording mark that forms the amorphous state: t = heart = two == in the digital information record (4) This is the record state of the amorphous state: And, to retreat, borrow, and return to the original unrecorded state. 75 200811858 /H3pii [Embodiment] Next, the present embodiment will be described in more detail by way of examples, and the present invention is not limited to the following examples. This example is an evaluation of the contrast of Examples 1 to 16 and Comparative Examples 1 to 5. Fig. 23 shows the details of the examples 1 to 9 and the evaluation of the contrast, Fig. 24 shows the details of the examples 1 to 16 and the evaluation of the contrast, and Fig. 25 shows the details of the comparative examples 1 to 5 and the evaluation of the contrast. (Example 1) A thickness of a spiral groove (depth: 130 nm, width: 300 nm, gauge: 〇·74 μχη) formed of a polycarbonate resin by injection molding was 〇· 6 mm, 120 mm diameter of the first substrate 16 色素 The following pigment was dissolved in 2,2,3,3-tetrafluoropropanol at a concentration of 1.5 g/100 cc to prepare a pigment coating for forming a digital information recording layer. Cloth liquid. [化 28]

This coating liquid was applied to the surface of the first substrate 16 on which the grooves 76, 2011, 858, J JJ JJil grooves were formed by a spin-drying method to form a digital information recording layer. Thereafter, silver is sputtered on the digital information recording layer 18 to form the first reflective layer 20 having a film thickness of 120 nm, and the first layered body 12 is produced. Next, by injection molding, a polycarbonate prepreg has a spiral pre-pit formed in a region of a radius of 21 mm to a radius of 24 mm (depth: 250 nm, half-width in the radial direction, 3 〇〇臓, distance) : ΐ·6 μπι), leaving the second substrate 22 having a diameter of 120 mm outside the radius 24 and having a mirror surface. Agriculture - Thereafter, the following pigment A, pigment B, and pigment c are mixed (mixed 卞 2 = · 45 · ) 5), and dissolved in 2, 2, 3, 3 _ at a concentration of 5 5 g / 1 〇〇 cc A pigment coating liquid for forming the visible information recording layer 24 is prepared by tetrafluoropropanol. (Pigment A) [Chem. 29]

(Pigment B) [Chem. 30] 77 200811858 ZJ> /^fjpil

(pigment c) [化31] a

This coating liquid was applied onto the surface of the shape pit 32 of the second substrate 22 by a spin coating method to form a visual information of 12 on the film. Thereafter, the second layered body 14 is produced by sputtering silver on the visible recording layer 24 to form a second reflecting layer having a film thickness of 卯. Further, the optical density (〇pticalDensity, 〇D) of the wavelength of the visual information recording layer 24 = 660 nm is 0·33 〇 Then, the ultraviolet curable adhesive is applied to the first reflective layer 20 of the first laminated body 12 (large Manufactured by Japan Ink Chemical Industry Co., Ltd. 78 200811858 ZJ> /4jpil DAICURE CLEAR SD6830), after being bonded to the second reflection layer 26 of the second layered body 14, the flash gas lamp is irradiated from the side of the second layered body 14 ( In the flash xenon lamp, the adhesive (adhesive layer 28) is cured, and the optical recording medium 10 in which the first laminated body 12 and the second laminated body 14 are bonded together is completed. (Example 2)

The optical recording medium of Example 2 was produced in the same manner as in Example 1 except that the film thickness of the visible information recording layer 24 was made 79 brain. Further, the optical density of the visible information recording layer 24 is 0·22. (Example 3) An optical recording medium of Example 3 was produced in the same manner as in Example 1 except that the thickness of the visible information recording layer 24 was changed to 91 nm. Further, the visual information recording layer 24 is ^2:) (Embodiment 4) The visual information recording layer 24 (4) is made thicker & 1 G3 nm, except that it is exactly the same as in Embodiment 1, and the light of the actual = 14 is produced. Record media. Another A Yan # concentration is 0.28. Further, in the case of the visual information recording layer 24, the optical recording medium of m5 is manufactured in the same manner as in the first embodiment except that the thickness of the visual information recording layer 24 is made 118. Further, the light Q32 ° of the visible information recording layer 24 (Embodiment 6) ^ r , ,. is the same as that of Embodiment 1 except that the visible information recording layer 24 is abruptly suspended, and the manufacturing example is the same. 6 light recording media. In addition, the light information density of the visual information recording layer 24 is 0·36 ° (Example 7). The visible information recording layer 24 (4) is made thick (10), and is completely _, in addition to the first embodiment, The optical recording medium of Example 7 was produced. Further, Q.38 ° of the visible information recording layer 24 (Example 8) The blending ratio of the dye A, the dye B, and the dye C was set to %: 45 ··20, The visual information recording has a wide margin of "1", except for the reference, which is identical to the embodiment i, and the optical recording medium of the technical embodiment 8. In addition, the optical density of the visual information recording 24 is _. In the example 9), the film thickness of 、, 、 p is made to be nm, and otherwise, the smattering is ** and 9 is completely out of the case, and the % of the visual information recording layer 24 is obtained. And the blending ratio of the coloring matter C is set to 45: the above-mentioned coloring matter A and the color % film thickness are made to 69, and otherwise 'the complete _=^ concentration is 043 with the first embodiment, and the visible information recording layer 24 Example 11) The blending ratio of bismuth and pigment C is set to 45: The film thickness of the above-mentioned pigment A and pigment is made to be 66 mn, and the 30 25 25 ′ will be recorded. The optical recording medium of Example u is the same as that of Embodiment 1. The concentration of the optical recording medium is (4). In addition, 2 (2) 5 of the visual information recording layer 24 records the optical recording medium of Tang Daicheng's Example 1 by visual information. 200811858 ZJ /^jpn (Embodiment 12) An optical recording medium of Example 12 was produced in the same manner as in Example 11 except that the film thickness of the visible information recording layer 24 was 56 nm. The optical density of the layer 24 was 0.35. (Example 13) The following dye D and the dye E were mixed (mixing ratio = 70 · · 30) to prepare a dye coating liquid for forming the visible information recording layer 24, by The coating liquid was applied onto the surface of the second substrate 22 on which the pre-pits 9 32 were formed by a spin coating method to form a visible information recording layer 24 having a film thickness of 93 nm, and Example 1 was applied. The optical recording medium of Example 13 was manufactured in exactly the same manner. Further, the optical density of the visible information recording layer 24 was 0.32. (Pigment D) [Chem. 32]

81 200811858 (Pigment E [Chem. 33]

Cior m (Example 14) The dye D, the dye E, and the dye F described below were mixed (mixing ratio = 70:5:25) to prepare a dye coating liquid for forming the visible information recording layer 24, by spinning In the coating method, the coating liquid was applied to the surface of the second substrate 22 on which the pre-pits 32 were formed to form the visible information recording layer 24 having a film thickness of 124 nm, and was completely the same as in the first embodiment. The optical recording medium of Example 14 was produced. Further, the optical density of the visual information recording layer 24 was 0.34. (Pigment F) [Chem. 34]

ΝIC

3 Η 104 5 (Example 15) 82 200811858 λό /43ρΐΤ The dye D, the following dye G, and the following dye Η are mixed (mixing ratio = 60:20:20) to prepare a visible information recording layer 24 The coating liquid is applied onto the surface of the second substrate 22 on which the pre-pits 32 are formed by a spin coating method to form a visible information recording layer 24 having a film thickness of 106 nm. The optical recording medium of Example 15 was produced in the same manner as in Example 1. Further, the optical density of the visible information recording layer 24 is 0.33. (Pigment G) [Chem. 35]

(pigment H) [Chem. 36]

I c2h5 Γ (Example 16) 83 200811858 Ld /4^pil The optical recording medium of Example 16 was produced in the same manner as in Example 15 except that the film thickness of the visible information recording layer 24 was 115 nm. . Further, the optical density of the visible information recording layer 24 is 0.357. (Comparative Example 1) An optical recording medium of Comparative Example 1 was produced in the same manner as in Example 1 except that the film thickness of the visible information recording layer 24 was changed to 60 nm. Further, the optical density of the visible information recording layer 24 was 0.17. (Comparative Example 2) An optical recording medium of Comparative Example 2 was produced in the same manner as in Example 10 except that the film thickness of the visible information recording layer 24 was 95 rnn. Further, the optical density of the visual information recording layer 24 is 0.59. (Comparative Example 3) An optical recording medium of Comparative Example 3 was produced in the same manner as in Example 10 except that the film thickness of the visible information recording layer 24 was 85 nm. Further, the optical density of the visual information recording layer 24 is 0.52. (Comparative Example 4) An optical recording medium of Comparative Example 4 was produced in the same manner as in Example 10 except that the film thickness of the visible information recording layer 24 was changed to 51 nm. Further, the optical density of the visual information recording layer 24 is 031. (Comparative Example 5) An optical recording medium of Comparative Example 5 was produced in the same manner as in Example 11 except that the film thickness of the visible information recording layer 24 was changed to 78 nm. Further, the optical density of the visual information recording layer 24 is 0.48. <Evaluation of Optical Recording Medium> 84 200811858 m In Examples 1 to 16 and Comparative Examples 1 to 5, the radiance reflectance of the visible information recording layer and the evaluation image for the visual information recording layer 24 were obtained. The color coordinates (L*aV color system), the color seat CL ab color system after the image for evaluation, and the contrast were evaluated. The laser reflectance was measured using a disk drive (DDU1000, Pustec A Division 'wavelength of the laser light = 660 nm, aperture ratio = 〇·65). The evaluation image was drawn to the visual information recording layer 24, and was carried out using the commercially available DVD driver (DVR-N18GL manufactured by 10 DATA) under the conditions of Table 3 below. The image for evaluation is a drawing pattern having a pure black portion and a pure white image drawn on the entire surface of the visual information recording layer 24. In addition, the time required for drawing is approximately 6 minutes. [Table 3] The aperture ratio __ 66〇Γηιη1 Γ - 0.66 - 40[nWl 4500[; rpml ( _ speed Tang, district) time 6 "minutes Ί --- - knife step to" _ 200 ΓΗζ 1 - _ swing wide Tang 50Γ Liml —. ^ V/ I LvXXXJ 8 "Second 1 Next, after the evaluation image is drawn on the visual information recording layer 24, the measurement conditions of the spectrophotometer shown in the following Table 4 are measured, and the drawn points are measured. The absolute reflection spectrum (absolute reflectance) of the (drawn part) and undrawn parts (undrawn part) [Table 4] 410 ~ 720 [nm] Incident angle 85 200811858 23743pif Next, based on the data of these reflection spectra Calculate the color coordinates. The color coordinates here are one of the uniform color spaces (CIE1976) determined by CIE in 1976, which is the LW color system (sometimes called the aELAB color system). Color seat IL, a , b' obtains the value of the XYZ color system by substituting the data of the absolute reflection spectrum (absolute reflectance measured by a spectrophotometer) into the following formula (1) prescribed by the jiS standard Z87〇l The second stimulus value X, Y, z) of the resulting object color, and then the tristimulus value X Y and Ζ are substituted into the following formula (2) specified in JIS Standard Ζ 8729, and the value of the L*a*b* color system (lightness number L, color degree () index a'b*) is calculated. § First, by substituting the data of the absolute reflection spectrum (absolute reflectance measured by a spectrophotometer) into the following formula (丨), the value of the χγΖ color system is obtained (the tristimulus value of the object color generated by the reflection)数, γ, Ζ). [Number 1] > ...(1) _ Here, S (λ): Spectral distribution of standard light used in color specifications λ (λ), J (λ), 芝(λ) : XYZ Color-matching function R( λ). Spectrai conical reflectance 86 200811858

Z.D /4jpiT Next, the tristimulus value Y is substituted into the following formula (2), and the lightness index L* of the L*a*b* color system is calculated. [Number 2] L*=116 (Y/Yn) 1/3-16 Y/Yn>0.008856 (2) Here, X, υ, ζ: the value of the tristimulus value of the χγζ system; Υη · Complete The value of Y of the standard light of a perfect diffuse reflector. • In the case of the LW color system, when γ/γη is less than or equal to 0.008856, the following formula (3) is used. [Number 3] L" = 903.29 (Y/YJ Y/Yn^0.008856 ... (3) In addition, the tristimulus values X, γ, and Ζ are substituted into the following formula (4) to calculate the color of the LYf color system. Degree index a*, b*. [Number 4] = 50〇|(^/^)1/3 -(TfrJn] XfXn>0M)BBS6 ^ _ ¥ -20〇|:f 74)U3-(ZJZjB] Τ /%>ϋ,_δ56 i -.(4)

ZiZn > 0,008856, where, X, Y, Z: tristimulus values of the XYZ system; Χη, Υη, Ζη: tristimulus values of the χγζ system of the fully diffuse reflector. In the case where 'Χ/Χη, Υ/Υη, or Ζ/Ζη has a value less than or equal to 〇·〇〇8856, replace the corresponding cube root of the above formula (4) with 87 200811858 23743pit 7.787 (χ/ Χη) + (16/116), 7.787 (Y/Yn) + (16/116) or 7.873 (Z/Zn) + (16/116), and calculate. Next, Sv shown in the following formula (5) was used as an evaluation index of the contrast after the drawing. [Number 5]

Sv: Sister] 3 chat - just (8) where $ D (λ) U (λ) V (λ) Next, the level of the benchmark is: the spectral reflectance of the drawn part [%]; : the spectral reflectance of the undrawn part ; : Cffi standard spectral luminous efficiency (refer to Figure 26). 5 is set based on the value of Sv obtained by the above formula (5). The evaluation criteria are as shown in Table 5 below.

According to Fig. 23 and Fig. 24, the laser reflectance of both of them is satisfactory. The color of the unexposed part of the 1~b is _ ^ \ good range is equal to the collection, and 3 〇 gL, 7 〇. The L of & satisfies as a better range: among the examples 实施, 4, 6, 7, 8, 9 and 13 pairs 88 200811858

The VJ /4JpiT ratio is evaluated to 5, 5, 5, 5, 4, 5, 5, and 4, which is excellent and good. The evaluation of the contrast ratios of Examples 2, 3, 10, u, 12, 13, 14, and further reaches 2, 3, 3, 2, 2, 2, 2 and the above embodiments 4, 5, 6, and 7. Compared with 8, 9 and 13, the rating 2 is low. The reason is considered to be caused by the high reflectance of the laser. Further, on the other hand, it can be seen that Comparative Examples 1 and 4 satisfy the laser reflection, the mystery 3〇ί?<;°5 LVb>^L^ $70, and therefore satisfy the L, 2, 3, and 5 Upper; L#: two 1 2 ratio. Insufficient degree. The rate of incidence is less than 8%, so | is 0 = 丄 = 70, but the laser anti-laser light ", control, no; ^ &"; line for the visual information recording layer 24 to estimate the contrast s. ,,, to evaluate "image. That is, it is not possible to evaluate the optical state of the present invention as long as it does not deviate from the present invention. The media is not limited to the above-described embodiment. [Simplified description of the drawings] 9, of course, various configurations can be employed. Figure 1 is a partial omission of the sound + ^ map. 1', a cross section of the optical recording medium of the present embodiment, Fig. 2 is an enlarged view of the lithography to the surface. Fig. 3 is a plan view showing a portion of the pre-pit area in the ΰ and 彔 media. Fig. 4 is a plan view showing the optical recording medium of the table 7 =. Figure 2: = Plan of a body. FIG. 7 is a cross-sectional view of an optical recording medium in a modified example, and a block diagram showing an example of a specific configuration of a device. The image recording layer of the image data used for the visible image is formed. Fig. 9A is a diagram of #七七. Recording level and feeding in the case of the second round of the service level Figure 9B θ main —

The position of the service: the recording level in the case of =:, and the feeding waveform Ξm are the patterns indicating the timing of the insertion of the disconnection pulse. Figure 1 (10) shows the case of the insertion pulse for the insertion ship. The timing of the wave system 4, the laser power control circuit (10) Fig. 12 is a waveform diagram showing the reflection of the laser light irradiated from the optical pickup to the image recording layer of the optical recording medium. π Figure 13A is a waveform diagram showing the FG pulse generated by the frequency generator based on the amount of rotation of the spindle motor. Fig. 13A is a waveform diagram showing a clock signal generated based on an FG pulse. Figure 4 is a flow chart (1) showing the processing operation of the information recording apparatus of the present embodiment. Figure 5 is a flow chart (2) showing the processing operation of the information recording apparatus of the present embodiment. 90 200811858 θ 16疋. An explanatory diagram of an example of a disc ID recorded on the outer peripheral side of a visual information record recorded on the media. It is an explanatory diagram of the shape of the light-receiving component of the surface material (4). Fig. 1 is an explanatory view showing an example of the % system sorrow in the case where the spot diameter of the laser light emitted from the optical pickup is large. = should be the _ state of the tongue in the case of a small point diameter.

The two m9Bs represent a method of generating a reference position detection_pulse based on a reference pulse selected from a positive pulse. Milk shot ^ The reference position detection pulse, the method of detecting the position of the laser light ==_ the reference position of the body is an example of the light: the recording information recording layer irradiates the fg pulse of the lightning, the reference position detecting pulse, ~ And, the timing diagram of the _pulse round-out sequence. The gradation = the visual information recording layer of the radio media, according to the gray map. Explanation of an example in which a visible image is recorded with a change in product. Fig. 23 is a view showing the implementation of 彳| and contrast scale estimation. The detailed content of the recording medium and the detailed content of the optical recording medium of the second ratio of ^1 y~16 are not compared with the details of the optical recording medium of the example '~5 to 91 200811858 jLD f^opu and contrast Table of assessments. Fig. 26 is a table showing the spectral luminous efficiency of the CIE standard. [Description of main component symbols] 10, 10a, 10b: Optical recording medium 12: First laminated body 14: Second laminated body 16: First substrate 18: Digital information recording layer 20: First reflective layer 22: Second substrate 24 : Visual information recording layer 26: second reflective layer 28: adhesive layer 30: pre-pit area 32: pre-pit 32A: convex portion 32B of pre-pit 32: recess 34 of pre-pit 32: visible information recording layer Forming area 36: printing area 1: information recording device 102: control unit 104: spindle motor 106: optical pickup

148: Main PC 92 200811858 ZJ /43ρΐτ 150 : RF amplifier 152 : Servo circuit 154 : Decoder 156 : Encoder 158 : Policy circuit 160 : Laser driver 162 : Laser power control circuit 164 : Frequency generator 165 : Stepping Motor 166: Motor driver 168: Motor controller 170: Phase-locked loop circuit 172: FIFO memory 174: Drive pulse generating portion 176: Buffer memory 178: Laser diode 180: Diffraction grating 182 ·• Optical system 184: light-receiving elements 184a, 184b, 184c, 184d: four regions 186 of light-receiving elements 184: polarization beam splitter 188: collimating lens 190: 1/4 wavelength plate 192: objective lens 93 200811858 ZJ / 4ipn 194: cylinder Lens 196: Focusing actuator 198: Tracking actuator 202a: Reflection area 202b: Non-reflecting area 204a: Round reflection 204b, 204c: Round reflection 206: Thick line 208: Dotted line BS: Beam point diameter C : area

Dg: image data

Do : Center

Dw · Recording tribute hi, h2 : average thickness hp : average depth K1 : peak part K2 : shoulder part L : laser light

Pll, P12, P13, P14, P15...Pin: coordinates P21, P22, P23, P24, P25...P2n: coordinates

Pml, Pm2, Pm3, Pm4, Pm5_______Pmn: coordinates rO, rl, r2, r3, r4, r5 · · Distance S201, S202, S203, S204: Step 94 200811858 2ό/4όρ\ί

Sal~Sal5 :Step SSP1 : Servo off pulse SSF2 : Servo on pulse ST : Servo period T : Short time tl, t2 : Average thickness T1 : Period W: Average half width

Claims (1)

200811858 23743pif X. Patent application scope: 1. - An optical recording medium having a visual information recording layer for recording visual information by irradiation of laser light, the optical recording medium being characterized by: the above-mentioned visual ftfl recording agency (4) county reading The length is equal to 8%, and the color of the above-mentioned visual information recording layer which is not under the above visual information == is indicated by L*, a*, b*: the standard ' 'satisfaction: > 〇 $ L ^ 70 ° 2. If the patent application is turned over, the visible information recording layer in the basin has a reflectance of 10% or more and 50% or less at the wavelength of the laser light. The optical recording medium according to claim 1, wherein the visible light tfU layer has a reflectance of 12% or more and 4% or less at a wavelength of the light. The optical recording medium of claim 1, wherein the above a* and the above b* satisfy 〇<a*, 0 < b*. The optical recording medium of claim 1, wherein the above 〆 and the above b* satisfy a*$〇, 〇<b*. *6. The optical recording medium of claim 1, wherein the a* and the above b* satisfy 〇<a*, b*$〇〇7· as described in claim 1 of the Shenqing patent scope The optical recording medium, wherein the above a* and the above b* satisfy a*$〇, b*$〇. The optical recording medium of claim 1, wherein the wavelength of the laser light is from 600 nm to 700 nm. 9. The light 96 200811858 ^ /4jpn as described in any one of claims 1 to 8, "the following general formula (1) 芡邑 化 化 , , , 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及The two ends may be the same or different: _ and such as, a substituent, Υ is a t-valent cation. General formula (1): [Chemical 1] Rt Χι I X2 Ri t applies to the light 5 recorded medium according to any one of the items 8 to 8, wherein the above-mentioned coloring group II is the first atomic group of the following formula (2) In the formula Aw, Χ3 has an acidic core. It is a t-valent cation. General formula (2) [Chemical 2] T/2 U. If you apply for a patent! The recording medium, wherein the visual information recording layer has a dye compound as shown in the following formula (3), wherein χ4 is an atomic group having an acidic core, f Is t: valence cation. General formula (3): [Chemical 3] The optical recording medium according to any one of claims 1 to 8, wherein the visual information recording layer has a dye compound of the formula (4), wherein R3 is A hydrocarbon group having a hindrance of 6 to 20 or a substituent containing ferrocene. General formula (4): [Chemical 4] The optical recording medium according to any one of the items 1 to 8, wherein the visual information recording layer has a general formula (5) as shown in the following formula (5). a dye compound, wherein R4 is a hydrocarbon group having a carbon number of 10 or less, R5 is a carbon or a hetero atom, may have a substituent, and R6 is a hydrocarbon group or a heterocyclic group. When R6 is 2 or more, a ring may be formed, and Z_ is a ring. Anion. General formula (5): [Chemical 5] The optical recording medium according to any one of claims 1 to 8, wherein the visual information recording layer has a dye compound represented by the following formula (6). In the above, R7 is a hydrocarbon group having a carbon number of 10 or less, R8 is a carbon or a hetero atom, may have a substituent, and R9 is a hydrocarbon group or a heterocyclic group. When R9 is 2 or more, a ring may be formed, and Z_ is an anion. General formula (6): [Chemical 6] The optical recording medium according to any one of claims 1 to 10, wherein the visual information recording layer has a dye compound as shown in the following formula (7), wherein , b2, & is a carbon atom or a nitrogen atom, and the ruler 2, R22, R23, R24, r25, and R26 each independently represent a hydrogen source = or a monovalent substituent, and the Han 22 can be bonded to each other to form a 5 member to a 7-shell heterocyclic ring, A represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, •, 0, 1, 2 or 3. When η is greater than or equal to 2, the plurality of Is and R n may be the same or different. 26 ' General formula (7): [Chemical 7] R24 K25 R26 2. The media as described in any one of claims 1 to 8, wherein the visual information recording layer has a pigment compound having the following general formula = Rs]~r35 is a monovalent substituent, an anion. Z is a general formula (8): 100 200811858 23743pif [化8] _ The optical recording medium according to any one of claims 1 to 8, wherein the visual information recording layer has a dye compound represented by the following formula (1), such as the following formula ( 2) a dye compound as shown in the following formula (3), wherein X and X2 are carbon or a hetero atom, and form a 5-membered ring or a 6-membered ring, and the two ends may be the same or Different, hydrazine is hydrogen or a monovalent substituent, r is a t-valent cation, χ3 is an atomic group having an acidic nucleus, and χ4 is an atomic group having an acidic nucleus. General formula (1): [Chemical 9] General formula (2): 101 200811858 23743pif [化10] General formula (3) [Chem. 11] 18. The optical recording medium according to claim 17, wherein the compounding ratio of the dye compound represented by the above formula (1) is Ea, and the dye compound is represented by the above formula (2) When the compounding ratio of the dye compound represented by the above formula (3) is Ec, Ea = 20 to 45%, Eb = 30 to 45%, and Ec = 20 to 35%. 19. The optical recording medium of claim 17, wherein the visible information recording layer has a thickness of 55 nm to 150 nm. The optical recording medium according to any one of claims 1 to 8, wherein the visual information recording layer has a dye compound represented by the following formula (4), and a general formula (5) A pigment compound, wherein R3 is a hydrocarbon group having a carbon number of 6 to 20 or a ferrocene-containing 102 200811858 23743 pif substituent, R 4 is a hydrocarbon group having a carbon number of 1 or less, and R 5 is carbon or The hetero atom may have a substituent, and R6 is a hydrocarbon group or a heterocyclic group. When R6 is 2 or more, a ring may be formed and an anion may be formed. General formula (4): [Chemical 12] General formula (5): [Chemical 13] R6. The optical recording medium according to claim 20, wherein the compounding ratio of the dye compound represented by the above formula (4) is set to Ed, as shown in the above formula (5). When the blending ratio of the pigment compound is Ee, Ed = 60 to 80%, and Ee = 20 to 40%. 22. The optical recording medium of claim 20, wherein the visible information recording layer has a thickness of 90 nm to 100 nm. The optical recording medium according to any one of claims 1 to 8, wherein the visual information recording layer has a dye compound represented by the following formula (4), such as the following formula ( 5) a pigment compound as shown in the following formula (6), wherein R3 is a hydrocarbon group having a carbon number of 6 to 20 or a substituent containing ferrocene, and R4 is a carbon number of not less than or equal to a hydrocarbon group of 10, a caliper 5 which is a carbon or a hetero atom, may have a substituent, R6 is a hydrocarbon group or a heterocyclic group, and when R6 is 2 or more, a ring may be formed, B is an anion, and R7 is a hydrocarbon group having a carbon number of 10 or less. The carbon or a hetero atom may have a substituent, and R9 is a hydrocarbon group or a heterocyclic group. When R9 is 2 or more, a ring may be formed. General formula (4): 104 200811858 23743pif [Chem. 14] General formula (5): [化15] General formula (6) · [Chem. 16] The optical recording medium according to Item 23, wherein the compounding ratio of the dye compound represented by the above formula (4) is set as in the above formula (5). When the blending ratio of the dye compound shown in the above formula (6) is Ef, Ed=60 to 'Eem Ef=20 to 30%. 25. The optical recording medium according to claim 23, wherein the thickness of the visible recording layer is 1.20 nm to 130 nm. The media recording medium according to any one of claims 1 to 8, wherein the visual information recording layer has a dye compound represented by the following formula (4), such as the following formula ( 7) a pigment compound as shown, and a dye compound represented by the following formula (8), wherein & is a nicotine group having a number of 6 to 20 or a substituent containing ferrocene, Βι, B2 : B3 is an atom or a nitrogen atom, and Rs2, R23, R24, R25, and 6 respectively represent a hydrogen atom or a valence substituent, respectively, which can form a heterocyclic ring of 5 to 7 members, and A represents a Substituted or unsubstituted aryl, substituted or unsubstituted aryl, or substituted or unocalized, η represents 〇, 1, 2 or 3, n is greater than or equal to 2, ^ 25MR26, They may be the same or different, and R3]~R35 are 1 substituent, β_子. ^ General formula (4): 106 200811858 23743pif [Chem. 17] General formula (7): General formula (8): 307 200811858 23743pif [Chem. 19] R33 R34 Rag W The optical recording medium according to claim 26, wherein the compounding ratio of the dye compound represented by the above formula (4) is set to Ed, as in the above formula (7). When the blending ratio of the dye compound shown in the above formula (8) is Eh, Ed=50 to 70%, Eg=10 to 30%, and Eh=10~ 30%. 28. The optical recording medium of claim 26, wherein the visible information recording layer has a thickness of 100 nm to 120 nm. 108