CN1848263A - Optical information recording medium and stamper - Google Patents
Optical information recording medium and stamper Download PDFInfo
- Publication number
- CN1848263A CN1848263A CN200610007496.0A CN200610007496A CN1848263A CN 1848263 A CN1848263 A CN 1848263A CN 200610007496 A CN200610007496 A CN 200610007496A CN 1848263 A CN1848263 A CN 1848263A
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- pit
- clamping
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- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Disclosed is an optical information recording medium having a printable region on a label surface which is extended to a clamping area, and label information such as a name of a manufacturer is printed in the clamping area. The optical information recording medium includes a substrate having label information pits serving as non-recording and non-reproducing pits that are formed in the clamping area and a reflective layer laminated on the label information pits, and a dummy substrate to be attached to the substrate through an adhesive layer formed on the reflective layer. The multiple label information pits are formed substantially in an entire region of the clamping area to display the label information which emerges by linking portions where the label information pits are not formed.
Description
Technical field
The present invention relates to optical information recording medium, in more detail, relates to the optical information recording medium of record mark (label) information.
Background technology
In recent years, comparing the DVD (digital multi-purpose CD) that has the several times recording capacity with CD (CD (compact-disc)) such as CD-R/CD-RW is used widely as the information recording carrier of information such as image such as record film or sound.In the past, in such DVD, on the surface (index face (label)) of set sky (dummy) substrate of a side opposite, be provided with the face (being printed layer) (with reference to patent documentation 1) that can print desirable frame etc. by printer (printer) etc. with a side of record regenerating light incident.And, the printed layers of motion with index face (label) arranged recently, expand to clamping (clamping) zone (area) that interior all sides are set up from posting field (area), enlarge printable zone, thereby improved commodity value (wide (wide) mark (label)).
[patent documentation 1] spy opens 2004-199771 communique (with reference to 0017 hurdle)
Yet, now, in DVD, as having the uveal type DVD that writes troactively that contains the organic pigment compound, distinguish nearly 8 kinds but reach writing speed by specification, and, if will have in the rewriting type DVD of phase change type recording layer is also contained in, just have up to about 20 kind.
; the DVD of wide (wide) mark (label); but owing to expand the zone of printed images near to center pit (center-hall) clamping (clamping) zone (area), so just reduce significantly in the zone of mark (label) information such as DVD manufacturing firm (maker) title that clamping in the past (clamping) zone (area) is write down, kind.For this reason, DVD manufacturing firm (maker), in order not influence user's printed images, with by mark (label) information being adopted that the color identical with the printing surface substrate put down in writing etc., the inconspicuous method of trying one's best is carried out record.
Under this situation, concerning the user of DVD, just be difficult to distinguish a lot of DVD kinds, worry the problem that is difficult to distinguish in use thereby produce.
And well-known, center pit (center-hall) clamping (clamping) zone (area) on every side at driver (drive) that DVD is packed into, or when taking out, is that stress is concentrated high part.Therefore, on the DVD of substrate with record regenerating zone and the mutual adhesive construct of empty (dummy) substrate, if the stickability in clamping (clamping) zone (area) reduces, DVD just has impaired possibility.
Summary of the invention
The present invention forms in order to solve such problem.
Promptly, the objective of the invention is to, when the printable area of index face (label) being expanded to clamping (clamping) zone (area), provide a kind of optical information recording medium that mark (label) information such as manufacturing firm (maker) title is recorded in clamping (clamping) zone (area).
In addition, other purposes of the present invention also are to provide a kind of optical information recording medium that has improved near the bond strength of center pit (center-hall).
Moreover the stamper (stamper) that provides a kind of optical information recording medium that has improved bond strength to use also is provided other purposes of the present invention.
In order to solve the above problems, in the present invention, adopt a plurality of pits (pit) queue record marks (label) information that forms in clamping (clamping) zone (area).
Promptly, according to the present invention, a kind of optical information recording medium is provided, its with substrate with that sky (dummy) substrate that is printed layer is set for clamping (clamping) zone (area) that covers counterpart substrate and posting field (area) part is bonded to each other, it is characterized in that: substrate has: the non-record regenerating pit (pit) that the regulation shape that forms in clamping (clamping) zone (area) is arranged; The posting field (area) that is provided with in clamping (clamping) zone (area) periphery go up form seek rail (tracking) with pregroove marks (pre-groove); Go up the reflection horizon that forms at pit (pit) and pregroove marks (pre-groove).
Here, in being applicable to optical information recording medium of the present invention, it is characterized in that: by the whole substantially regional a plurality of pits (pit) that form in clamping (clamping) zone (area), expressive notation (label) information.By adopting such method, just can use the user of wide (wide) index face (label) type optical information recording medium to be difficult on clamping (clamping) zone (area) of use flexibly in the past, mark (label) information that record is necessary.
And, in the optical information recording medium that the present invention was suitable for, it is characterized in that: form recording layer and reflection horizon in order on pregroove marks (pre-groove) surface in the posting field (area) that clamping (clamping) zone (area) outer circumferential side forms, only form the reflection horizon by pit (pit) surface, clamping (clamping) zone (area) is equated substantially with the contrast of posting field (area) in clamping (clamping) zone (area).
Moreover, in the optical information recording medium that the present invention was suitable for, also can have character string pit (pit) that upward form in clamping (clamping) zone (area), expression regulation character information.
Secondly, according to the present invention, a kind of optical information recording medium is provided, it is characterized in that, be equipped with: have pregroove marks (pre-groove) of seeking rail (tracking) usefulness that forms at posting field (area) and the pit (pit) that forms in clamping (clamping) zone (area), go up the substrate in stacked reflection horizon at pit (pit) and pregroove marks (pre-groove); Have by the bonding coat and the substrate that on the reflection horizon, form bonded to each other, on mark (label) face of one side opposite with bonding coat, sky (dummy) substrate that is printed layer that forms for the part that covers corresponding to posting field (area) and clamping (clamping) zone (area); Pit (pit) for expressive notation (label) information, forms a plurality of on the whole substantially zone in clamping (clamping) zone (area).
Here, in the optical information recording medium that the present invention was suitable for, it is desirable to, pit (pit), in clamping (clamping) zone (area), form the formation of lining up regulation, mark (label) information is formed by connecting the information that the part that does not form pit (pit) appears regulation.
In addition, pit (pit) forms in clamping (clamping) zone (area) and lines up the regulation formation, and mark (label) information also can be represented the information stipulated by the part that is connected to form pit (pit).
And, in the optical information recording medium that the present invention was suitable for, in the pit (pit) that is connected clamping (clamping) zone (area) formation, the character string pit (pit) of expression regulation character information can be arranged also.In this case, it is desirable to, character string pit (pit) deeper forms than pit (pit).
In addition, according to the present invention, a kind of optical information recording medium is provided, it is with the optical information recording medium of empty (dummy) base plate bonding on the substrate that record regenerating is used by bonding coat, it is characterized in that: substrate has: form and seek the posting field (area) of rail (tracking) with pregroove marks (pre-groove); Form with the ditch depth that forms than pregroove marks (pre-groove) more shallowly, be used for first pit (pit) of expressive notation (label) information and be used for raising and (dummy) clamping (clamping) regional (area) of adhesive second pit (pit) of substrate; Empty (dummy) substrate, with the index face (label) of bonding coat opposition side on, have for what the part that covers corresponding record zone (area) and clamping (clamping) zone (area) formed and be printed layer.
By being set directly at the reflection horizon on first pit (pit) and second pit (pit), can guarantee the identifiability of mark (label) information here.
And, according to the present invention, a kind of stamper (stamper) is provided, it is used for the substrate of press forming optical information recording medium, on this substrate, be provided with clamping (clamping) zone (area) that covers correspondence markings face (label) face and posting field (area) part be printed layer, it is characterized in that having: at the pit pit of the part formation corresponding with clamping (clamping) zone (area)) use jog; That the part of the posting field (area) that is provided with at corresponding clamping (clamping) zone (area) outer circumferential side forms and use jog with the variform pregroove marks of jog (pre-groove) with pit (pit).
Here, it is desirable to, pit (pit) is used jog, forms on the whole substantially zone of the part of corresponding clamping (clamping) zone (area).
According to the present invention, on clamping (clamping) zone (area) of the optical information recording medium of wide (wide) index face (label) type, can write down the visual mark that just can be easy to recognize (label) information.
Description of drawings
Fig. 1 is for the figure of the optical information recording medium that is suitable for embodiments of the present invention is described;
Fig. 2 is the sectional drawing for first embodiment that the last non-record regenerating usefulness pit in clamping (clamping) zone (area) (pit) at optical information recording medium is described;
Fig. 3 is for the figure of mark (label) information that clamping (clamping) zone (area) is write down is described;
Fig. 4 is for non-record regenerating second embodiment of pit (Pit) and the sectional drawing of character information formation portion (character string pit (pit)) are described;
Fig. 5 is for non-record regenerating the 3rd embodiment of pit (pit) and the sectional drawing of character information formation portion (character string pit (pit)) are described;
Fig. 6 is the figure that is formed the character information of portion (character string pit (pit)) expression by character information in order to illustrate;
Fig. 7 is that the figure that the non-record regenerating that forms is used the ditch depth of pit (pit) optical information recording medium identical with the ditch depth of going up the ditch that forms at posting field (area) is gone up in explanation in clamping (clamping) zone (area).
Among the figure:
10,20,30 ... substrate,
11,21,31 ... center pit (center-hall),
12,22,32 ... stamper (stamper) indent,
13,23,33 ... bobbin (stack-rib),
14,24,34 ... clamping (clamping) zone (area),
15,25,35 ... posting field (area),
16,26,36 ... empty (dummy) substrate,
17,27,37 ... be printed layer,
18,28,38 ... bonding coat,
19 ... mark (label) information,
100,200,300 ... optical information recording medium,
101,201,301 ... pregroove marks (pre-groove),
102 ... mark (label) information pits (pit) (non-record regenerating pit (pit)),
103,203,303 ... uvea,
104,204,304 ... the reflection horizon,
202,302 ... non-record regenerating pit (pit),
205,305 ... character information formation portion (character string pit (pit))
Embodiment
Below, with reference to the accompanying drawings the best way (embodiment) that the present invention implemented is described.Moreover the present invention is not subjected to the restriction of following embodiment, can implement various distortion in the scope of its aim.In addition, employed accompanying drawing is used for present embodiment is described, is not the actual size of expression.
Be suitable for the optical information recording medium of present embodiment, have the structure that substrate, sky (dummy) substrate that is printed layer for part being provided with of clamping (clamping) zone (area) that covers counterpart substrate and posting field (area) are bonded together mutually.Here, on substrate, be provided with: go up posting field (area) that the non-record regenerating that the regulation shape is arranged that forms is provided with pit (pit), at clamping (clamping) zone (area) outer circumferential side at clamping (clamping) zone (area) and go up rail (tracking) is gone up formation with pregroove marks (pre-groove), in pit (pit) and pregroove marks (pre-groove) the reflection horizon of seeking that forms.Then, by the pit (pit) that a plurality of non-record regenerating that is formed with the regulation shape on clamping (clamping) zone (area) is used, the mark of recording optical-information recording medium (label) information.Below, the embodiment of optical information recording medium is described.
(optical information recording medium)
Fig. 1 is the figure that describes for the embodiment to the optical information recording medium that is applicable to embodiments of the present invention.Fig. 1 (a) is the planimetric map of seeing from signal face one side of the record regenerating light incident substrate 10 of optical information recording medium 100.Fig. 1 (b) is the planimetric map of seeing from index face (label) side of sky (dummy) substrate 16 that is printed layer 17 that is provided with optical information recording medium 100.
Shown in Fig. 1 (a), optical information recording medium 100 has circular substrate 10, is provided with center pit (center-hall) 11 at the central part of substrate 10.Around center pit (center-hall) 11, with the concentric circles setting: in injection molding forming as stamper (stamper) indent 12 of mold pressing part, the bobbin (stack-rib) 13 that when regulation that optical information recording medium 100 is packed into drives (drive), uses.Shown in Fig. 1 (a), at interior all side formation clampings (clamping) zone of bobbin (stack-rib) 13 (area) 14, at the outer circumferential side formation posting field (area) 15 of bobbin (stack-rib) 13.On (area) 14 of clamping (clamping) zone, as described later, mark (label) information of representing with AB 19, be used as of a plurality of marks (label) information pits (pit) formation of non-record regenerating, in (area) 14 of clamping (clamping) zone, carry out record with appearing suddenly out with pit (pit).
Below, shown in Fig. 1 (b), on mark (label) surface of optical information recording medium 100, be provided with sky stacked on substrate 10 (dummy) substrate 16, to form and cover clamping (clamping) zone (area) 14 and posting field (area) 15 by printable layers 17 that is printed such as printers (printer).
Below, describe about the layer structure of optical information recording medium 100.
Fig. 2 is the sectional drawing for first embodiment that the non-record regenerating usefulness pit (pit) in (area) 14 of clamping (clamping) zone of optical information recording medium 100 is described.As shown in Figure 2, optical information recording medium 100, have such structure, the substrate of being made up of translucent material 10 of center pit (center-hall) 11 promptly will be set by bonding coat 18, bonding mutually with sky (dummy) substrate 16 that forms with substrate 10 identical materials.On the surface of substrate 10, what have the regulation shape seeks rail (tracking) with pregroove marks (pre-groove) 101, is formed concentric circles or spiral form.In addition, spreading on the posting field (area) 15 of outer circumferential side, be provided with pre-pit (pit) as required or seek rail (tracking) usefulness and the pattern (pattern) of the regulation that the address is used for recorded information from bobbin (stack-rib) 13.
On (area) 14 of clamping (clamping) zone on substrate 10 surfaces, in the scope till stamper (stamper) indent 12 of interior all sides, formation is as a plurality of marks (label) information pits (pit) 102 of non-record regenerating with pit (pit), recording prescribed mark (label) information.Here, as mark (label) information pits (pit) 102 of non-record regenerating, different with pregroove marks (pre-groove) 101 shapes that form at posting field (area) 15 with pit (pit).
On the pregroove marks (pre-groove) 101 that posting field (area) 15 forms, stacked in order uvea 103 and the reflection horizon 104 that contains organic dye compound.On the other hand, on mark (label) information pits (pit) 102 of clamping (clamping) zone (area) 14 formation, reflection horizon 104 only is set.
On the surface of empty (dummy) substrate 16, be covered substrate 10 clampings (clamping) zone (area) 14 and posting field (area) 15, be provided with and be printed layer 17, can print the image of regulation by printer (printer) etc.On empty faces (dummy) substrate 16, bonding coat 18 1 sides, form with at identical ditch 161 of pregroove marks (pre-groove) 101 shapes of the surface of substrate 10 formation and the pit (pit) 162 identical with mark (label) information pits (pit) 102 shapes.
(mark (label) information)
In the optical information recording medium 100 that is applicable to present embodiment, it is characterized in that: substrate 10 surfaces, on (area) 14 of clamping (clamping) zone, writing down mark (label) information 19 that non-record regenerating forms with a plurality of marks (label) information pits (pit) 102 formations of pit (pit) that is used as.
Fig. 3 is for the figure of declare record in mark (label) information of clamping (clamping) zone (area) 14.Shown in Fig. 3 (b), mark (label) information of being represented by AB 19 is recorded on (area) 14 of clamping (clamping) zone with the formation of a plurality of marks (label) information pits (pit) 102.
Fig. 3 (a) is for the expanded view of mark (label) information 19 is described.Shown in Fig. 3 (a), a plurality of marks (label) information pits (pit) 102 form by the formation of lining up regulation, close by connecting the part that does not form mark (label) information pits (pit) 102, and the character information of AB is appeared in one's mind.Moreover, dot matrix pattern (pattern) expression of mark (label) information pits (pit) 102 usefulness painted blacks.
Other embodiment as record mark (label) information 19 on (area) 14 of clamping (clamping) zone, for example can also enumerate along the shape of character information AB and form a plurality of marks (label) information pits (pit) 102, by connecting the method that the part that does not form mark (label) information pits (pit) 102 writes down character information AB.
In this case, it is desirable to, except mark (label) information pits (pit) 102 that is used for record mark (label) information 19, clinging power with raising substrate 10 and empty (dummy) substrate 16 is a purpose, and a plurality of second pits (pit) (do not have and illustrate) are set on (area) 14 of clamping (clamping) zone.The number of second pit (pit) like this, by and the number of mark (label) information pits (pit) 102 between relation suitably select, and do not do special qualification.
In addition, in the optical information recording medium 100 that is suitable for present embodiment, it is characterized in that: the shape of mark (label) information pits (pit) 102 that forms on (area) 14 of clamping (clamping) zone is different with the shape of the pregroove marks (pre-groove) 101 that forms at posting field (area) 15.That is, the degree of depth of mark (label) information pits (pit) 102 forms shallowly than the degree of depth of pregroove marks (pre-groove) 101.
As described later, in case form the film of the uvea 103 that contains organic dye compound on the surface of pregroove marks (pre-groove) 101, the organic dye compound of deposition in the pregroove marks (pre-groove) 101 after uvea 103 film forming, thus, make the pit shape on uvea 103 surfaces, with the shape on the mark of film forming (label) information pits (pit) 102 surfaces is substantially not identical with uvea 103.
Because the pit shape on uvea 103 surfaces, with with uvea 103 not film forming mark (label) information pits (pit) 102 surface configurations substantially identical, clamping (clamping) zone (area) 14 these surfaces have formed reflection horizon 104 after and the shape of the pit of posting field (area) 15 cardinal principle that also just becomes is identical.
Promptly, uvea 103 surfaces in posting field (area) 15 are provided with the pit depth (Da) and half range wide (Wa) under the situation in reflection horizon 104, and the pit depth (Db) in the reflection horizon 104 that are provided with mark (label) information pits (pit) 102 surfaces at clamping (clamping) zone (area) 14 is identical with half range wide (Wb) cardinal principle.
Its result, because the reflection light quantity of clamping (clamping) zone (area) 14 and posting field (area) 15 equates substantially, so can't see the printed image of part that correspondence is printed clamping (clamping) zone (area) 14 of layer 17, with the separatrix of the printed image of the part of corresponding record zone (area) 15, appear to have marginal problem thereby solved at the image that is printed printing on the layer 17.
Moreover, as shape with mark (label) information pits (pit) 102, form with uvea 103 by in the same manner the method substantially of the surface crater shape after the film forming, do not do special qualification.For example, can enumerate uvea 103 on pregroove marks (pre-groove) 101 that is determined at posting field (area) 15 in advance, according to the method for measured shape decision mark (label) information pits (pit) 102 shapes by the shape after the film forming.
In addition, in the optical information recording medium 100 that present embodiment is suitable for, it is characterized in that:, do not form the uvea 103 that contains organic dye compound on surface substrate 10 surfaces, that form mark (label) information pits (pit) 102 on (area) 14 of clamping (clamping) zone.
Promptly, do not form uvea 103 by near mark (label) information pits (pit) 102 surfaces center pit (center-hall) 11, improve the stickability that stress is concentrated substrate 10 with empty (dummy) substrate 16 of high clamping (clamping) zone (area) 14.Its result can prevent when go up to install taking out optical information recording medium 100 at driver (drive) when, near the damage the center pit (center-hall) 11.
In addition, in the present embodiment, surface in bonding coat 18 1 sides of empty (dummy) substrate 16, by forming identical shaped ditch 161 of the pregroove marks (pre-groove) that forms with surface 101 and the pit (pit) 162 identical shaped, can improve the stickability of sky (dummy) substrate 16 with mark (label) information pits (pit) 102 at substrate 10.Particularly in the scope corresponding with clamping (clamping) zone (area) 14 of the substrate 10 of empty (dummy) substrate 16, by forming the pit (pit) 162 identical shaped, can further improve the stickability that stress is concentrated substrate 10 with empty (dummy) substrate 16 of high clamping (clamping) zone (area) 14 with mark (label) information pits (pit) 102 of substrate 10.
(layer constituent material)
Below, describe for the layers of material that constitutes the optical information recording medium 100 that is suitable for present embodiment.
Uvea 103, can be with the pigment solution of organic pigment compound dissolving back modulation in the solvent of regulation, on the pregroove marks (pre-groove) 101 that forms on the posting field (area) 15 of substrate 10, be coated with the back film forming by spin coating (spin-coat) method etc.As the organic pigment compound, for example can enumerate, quinoline blue be pigment, squarylium be pigment, gram ketone be pigment, sky blue be that pigment, triallylamine are that pigment, anthraquinone are that pigment, containing metal azo are that pigment, two thiophenol metallic complex salt are that pigment, India's anilinate fluor-complex are that pigment, phthalocyanine are that your first of pigment, naphthalene is a pigment etc.Can use these pigments also can and to use separately.
In addition, be used to modulate the solvent of pigment solution, for example can enumerate, ethyl cellosolve, methyl cellosolve, methyl alcohol, tetrafluoro close propyl alcohol etc.Moreover, on uvea 103, except that the organic pigment compound, also can add lemon pigments such as antioxidant, two thiophenol fluor-complexs; The bonding agent of cellulose nitrate, cellulose triacetate, ketone-based resins, acryl resin, polyvinyl butyral, polyolefin etc. (binder) etc.
Reflection horizon 104 is with metal or their alloy materials such as Au, Ag, Cu, Ni, Al, Pt, by formation such as vacuum vapour deposition, cathode vacuum spraying plating (sputtering) method, ion plating (ion-plating) methods.In these materials, Ag, Al are preferred.
Bonding coat 18 can be with sticker, by spin coating method (spin-coat), intaglio plate (gravure) coating, spraying coating (spray-coat), roller coat methods such as (roll-coat), and coating on reflection horizon 104 and forming.As sticker, for example can enumerate UV cured property acrylic resin, UV cured epoxy resin, UV cured bonding agent, epoxy adhesive, silicone-based resin, silicone adhesive agent, hotmelt etc.
Empty (dummy) substrate 16 it is desirable to, and adopts with substrate 10 identical materials to form.By adopting identical materials to form sky (dummy) substrate 16 and substrate 10, can prevent mutually bonding they the time the warpage of dish.
Be printed layer 17, after the water-based coating fluid that will contain uv-hardening resin is coated in above sky (dummy) substrate 16, its sclerosis back formed by the ultraviolet ray irradiation.As uv-hardening resin, for example can enumerate hydroxyethyl (partially) acrylate, hydroxypropyl (partially) acrylate, hydroxybutyl (partially) acrylate, hydroxyl amyl group (partially) acrylate, phenoxy group hydroxypropyl (partially) acrylate, chlorine hydroxypropyl (partially) acrylate, diglycol ethylene glycol one (partially) acrylate, trietbhlene glycol one (partially) acrylate, polyglycol one (partially) acrylate, two propyleneglycoles one (partially) acrylate, glycol polypropylene one (partially) acrylate, glycerine list (partially) acrylate, glycerine two (partially) acrylate, pentaerythrite (partially) acrylate, the sweet ammonia diether of phenyl (partially) acrylate, dipentaerythritol five (partially) acrylate, the acrylate resin of time (partially) acrylate of dihydric phenol A epoxy resin etc. etc.
As the bridge formation monomer that in these resins, adds, for example can enumerate trimethyl propane (partially) acrylate, propylene trimerization isocyanide, 1,4-butylene glycol time (partially) acrylate, 1,6-ethylene glycol time (partially) acrylate, dimethyltrimethylene glycol time (partially) acrylate, bicyclopentadiene phenyl time (partially) acrylate, pentaerythrite (partially) acrylate etc.
The atomic group catalyzer of using as sclerous reaction, for example can enumerate the thioxanthene ketone of the anthraquinone class, 2 of the propionyl benzophenone system of acetophenols such as 1-hydroxyl ring ethyl benzophenone, 2-hydroxyl 2-first-1-phenyl-propane-1-ketone, 2,2-diethoxy acetophenol, 4-phenoxy group-2,2-ww-dichloroacetophenone phenol system, 2-hydroxy-2-methyl propionyl phenolic aldehyde etc., 2-chloro anthraquinone etc., 4-diethyl thioxanthone etc.
(stamper (stamper))
Below, the stamper (stamper) of modulation substrate 10 is described.
Be suitable for present embodiment stamper (stamper), be to be used to be shaped and sky (dummy) the substrate 16 mutual bonding stampers (stamper) that constitute the substrate 10 of optical information recording medium 100 that the record regenerating zone is not set, it is characterized in that having: the pregroove marks (pre-groove) that forms in the part of the posting field (area) 15 of counterpart substrate 10 is with jog, use jog in mark (label) information pits (pit) of the part formation of corresponding clamping (clamping) zone (area) 14.
Here, it is desirable to, mark (label) information pits (pit) is used jog, the height of comparing jog with jog with pregroove marks (pre-groove) is low, form the degree of depth of mark (label) information pits (pit) 102 at clamping (clamping) zone (area) 14, than the depth as shallow of posting field (area) 15 formed pregroove marks (pre-groove) 101 form.
In addition, the number of mark (label) information pits (pit) usefulness jog suitably is defined as whole substantially last formation a plurality of marks (label) information pits (pit) 102 at clamping (clamping) zone (area) 14, and does not do special qualification.By whole substantially formation a plurality of marks (label) information pits (pit) 102 at clamping (clamping) zone of substrate 10 (area) 14, improve the stickability at clamping (clamping) zone (area) 14 upper substrates 10 and sky (dummy) substrate 16, this is desirable.
The manufacture method of stamper (stamper) if known in the past method will not done special qualification, can be enumerated for example following method.
Promptly, irradiating laser (laser) on the glass that scribbles photoresist (photo-resist) (glass) negative and form the sub-image of the groove back of the body (land)/groove (groove) displays photoresist (photo-resist) pattern (pattern) after the developer solution exposure.Then, with photoresist (photo-resist) pattern (pattern) as etching mask, after carrying out reactive ion etching (ion-etching) processing, remove and stay residual photoresist (photo-resist) on glass (glass) the raw sheet surface, the former dish of glass (glass) of photoresist (photo-resist) pattern (pattern) of having modulated transfer printing again.
Then, with the former panel surface of glass (glass) of modulating like this, after carrying out plasma etching (radical-etching) processing, form conducting film in the former panel surface of glass (glass), the electroplating nickel (nickel) of going forward side by side, practise usury from nickel (nickel) layer from the glass (glass) of the pattern (pattern) that formed photoresist (photo-resist) is former again, modulate stamper (stamper) like this.
Moreover, with the such stamper (stamper) of modulation,, obtain the substrate that forms photoresist (photo-resist) pattern (pattern) on the surface by injection molding method etc.
(non-record regenerating second embodiment of pit (pit))
Below, describe for second embodiment of non-record regenerating with pit (pit).
Fig. 4, in the optical information recording medium 200 that present embodiment was suitable for, be to form non-record regenerating second embodiment of pit (pi) 202 and the sectional drawing of character information formation portion (character string pit (pit)) in order to illustrate on (area) 24 of clamping (clamping) zone.Be the example of shape of the wide cut (wide) printable (printer) of expression protection membranous type DVD-R here.
As shown in Figure 4, optical information recording medium 200 is glued together by bonding coat 28 mutually with substrate 20 that is arranged on center pit (center-hall) 21 and sky (dummy) substrate 26.Surface at substrate 20 forms pregroove marks (pre-groove) 201.In addition, at the posting field (area) 25 that extends to outer circumferential side from bobbin (stack-rib) 23, the pattern of regulation (pattern) is provided with as required.On (area) 24 of clamping (clamping) zone on substrate 20 surfaces, in the scope till stamper (stamper) indent 22 of interior all sides, formed the non-record regenerating of uniformly-spaced lining up formation with regulation is used for representing character information when being connected a plurality of non-record regeneratings with pit (pit) 202 with pit (pit) 202 character information formation portion (character string pit (pit)) 205.On pregroove marks (pre-groove) 201, uvea 203 and reflection horizon 204 are stacked in order.On the other hand, reflection horizon 204 only is set at non-record regenerating on pit (pit) 202.On the surface of empty (dummy) substrate 26, be clamping (clamping) zone (area) 24 and the posting field (area) 25 of covered substrate 20, be provided with and be printed layer 27.On the face of bonding coat 28 1 sides of empty (dummy) substrate 26, the ditch 261 that the pregroove marks (pre-groove) that forms and form on the surface of substrate 20 20 is identical shaped, and with non-record regenerating with the identical shaped pit (pit) 262 of pit (pit) 202.
As shown in Figure 4, the non-record regenerating pit (pit) 202 that on (area) 24 of clamping (clamping) zone, forms, with the degree of depth of pit (pit) 202 till the bottom, form identical non-record regenerating with the degree of depth of pregroove marks (pre-groove) 201 till the bottom of formation on the posting field (area) 25.As previously described, on pregroove marks (pre-groove) 201, uvea 203 and reflection horizon 204 are stacked in order, use on the pit (pit) 202 at non-record regenerating, because reflection horizon 204 only is set, so it is,, slightly different with the pit depth under the situation of using the reflection horizon 204 that is provided with on the pit (pit) 202 at non-record regenerating when the pit depth under the situation of setting up reflection horizon 204 on the pregroove marks (pre-groove) 201.
The 24 character information formation portions (character string pit pit) that form in clamping (clamping) zone (area)) 205, connecting (in the present embodiment with predetermined distance, being about 0.74 μ m) a plurality of (this example is 2) non-record regenerating of arranging is with pits (pit) 202 time, character informations such as expressive notation (label) information.The formation method of character information formation portion (character string pit (pit)) 205, usually, in the manufacture method of described in front stamper (stamper), when on the glass that will scribble photoresist (photo-resist) (glass) raw sheet, forming the sub-image of predetermined pattern (pattern) with laser (laser) irradiation, after the non-record regenerating of correspondence exposed with the part of pit (pit) 202, once more with corresponding character information formation portion (character string pit pit)) 205 part carries out re-expose and handles.
The 3rd embodiment of (non-record regenerating pit pit))
Below, describe for the 3rd embodiment of non-record regenerating with pit (pit).
Fig. 5 in the optical information recording medium 300 that is suitable for present embodiment institute, is for the 3rd embodiment that non-record regenerating usefulness pit (pit) 302 is described and the sectional drawing of character information formation portion (character string pit (pit)).Be the example of shape of the wide cut (wide) printable (printer) of expression pattern pressing type DVD-RC here.
As shown in Figure 5, optical information recording medium 300, the substrate 30 that will have center pit (center-hall) 31 is glued together by bonding coat 38 mutually with empty (dummy) substrate 36.On the surface of substrate 30, form pregroove marks (pre-groove) 301, the pattern (pattern) of regulation is set on the posting field (area) 35 that extends to outer circumferential side from bobbin (stack-rib) 33 as required.In the scope till stamper (stamper) indent 32 of clamping (clamping) zone (area) 34, form non-record regenerating pit (pit) 302 and character information formation portion (character string pit (pit)) 305.On pregroove marks (pre-groove) 301, uvea 303 and reflection horizon 304 are stacked in order, use on the pit (pit) 302 at non-record regenerating, and reflection horizon 304 only is set.Moreover, on the surface of empty (dummy) substrate 36, be clamping (clamping) zone (area) 34 and the posting field (area) 35 of covered substrate 30, be provided with and be printed layer 37.On the face of bonding coat 38 1 sides of empty (dummy) substrate 36, form with at the identical shaped ditch 361 of substrate 30 surperficial formed pregroove marks (pre-groove) 301, and with non-record regenerating with the identical shaped pit (pit) 362 of pit (pit) 302.
As shown in Figure 5, non-record regenerating is with pit (pit) 302, to the degree of depth of non-record regenerating till with the bottom of pit (pit) 302, is formed identical with the degree of depth of pregroove marks (pre-groove) 301 till the bottom.On pregroove marks (pre-groove) 301, uvea 303 and reflection horizon 304 are stacked in order, owing to only be provided with reflection horizon 304 on pit (pit) 302 at non-record regenerating, so the pit depth under the situation that reflection horizon 304 is set on the pregroove marks (pre-groove) 301 is different with the pit depth under the situation that reflection horizon 304 is set on pit (pit) 302 at non-record regenerating.
The character information formation portion (character string pit (pit)) 305 that on (area) 34 of clamping (clamping) zone, forms, when a plurality of (this example is 2) the non-record regenerating that connects in accordance with regulations uniformly-spaced (being about 0.74 μ m in the present embodiment) arrangement is with pit (pit) 302, the character information of expressive notation (label) information etc.And the bottom in character information formation portion (character string pit (pit)) 305 forms than the ditch of non-record regenerating with the darker one-level in bottom of pit (pit) 302.By form the ditch of darker one-level in character information formation portion (character string pit (pit)) 305, can improve the contrast degree that forms the represented character information of portion (character string pit (pit)) 305 by character information.
(Word message)
Fig. 6 is the figure for the represented character information of description character information formation portion (character channelling (pit)).Here, Fig. 5 represents is the example of the represented character information in clamping (clamping) zone (area) at DVD-R.
Fig. 6 (a) is the expanded view at the character information of clamping (clamping) zone (area) of optical information recording medium 300 34 formation.Shown in Fig. 6 (a), on (area) 34 of clamping (clamping) zone, (use dot matrix pattern (pattern) expression of painted black here with pit (pit) 302 with the non-record regenerating of uniformly-spaced arranging in accordance with regulations.) together, form portion (character string pit (pit)) 305 expression character informations (being " AB " here) by character information.
Fig. 6 (b) is the expanded view of character information formation portion (character string pit (pit)) 305.Shown in Fig. 6 (b), character information formation portion (character string pit (pit)) 305 is formed in when connecting a plurality of non-record regeneratings with pits (pit) 302 character information shown in the expression.
Fig. 6 (c) is the planimetric map of seeing from the signal face of optical information recording medium 300.Shown in Fig. 6 (c), non-record regenerating is formed with clamping (clamping) zone (area) 34 that uniformly-spaced arranges with pit (pit) 302 on, form portion (character string pit (pit)) 305 by character information, make character information (AB) appear in one's mind out.
According to embodiment, present embodiment is carried out specific description more below.Moreover the present invention is not subjected to the restriction of embodiment.
(embodiment)
To gather carbonic acid resin injection moulding with regulation stamper (stamper), be shaped to the circular substrate of thick 0.6mm, external diameter φ 120mm, internal diameter (center pit (center-hall)) φ 15mm, refractive index 1.59.
On the substrate of moulding, form stamper (stamper) in position and push ditch from center φ 21mm.Outside stamper (stamper) is pushed ditch, on clamping (clamping) zone (area) that is provided with in the scope of center φ 22mm～φ 34mm, as non-record regenerating pit (pit), formation has depth ratio posting field (area), and upward formed ditch will shallow mark (label) information pits (pit).A plurality of pits of mark (label) information pits (pit) are configured to form the formation of regulation, by connecting the part that does not form pit, make character information appear in one's mind out.In addition, on the posting field (area) of clamping (clamping) zone (area) arranged outside, be formed with the pregroove marks (pre-groove) of prescribed depth.
The shape of the pregroove marks (pre-groove) that forms at posting field (area) is track space 0.74 μ m, degree of depth 160nm, the wide 310nm of half range.Mark (label) information pits (pit) that forms at clamping (clamping) zone (area) be shaped as track space 0.74 μ m, degree of depth 100nm, the wide 250nm of half range.
Then, the posting field (area) on formed pregroove marks (pre-groove) on the substrate only, being extended to periphery near the φ 36mm of center, is that pigment solution (concentration 1.2 weight %) is coated with spin coating method (spin-coat) with azo, and uvea is carried out film forming.Pregroove marks after being coated with uvea (pre-groove) goes up pigment deposition, and the pit shape on uvea surface is degree of depth 100nm, the wide 250nm of half range.
Next, the scope from the substrate surface center from φ 22mm to φ 119mm, for covering clamping (clamping) zone (area) and posting field (area) both sides' cathode vacuum spraying platings (sputtering) Ag alloy, and the uvea that forms at posting field (area), on clamping (clamping) zone (area's) mark (label) information pits (pit), form the film in the reflection horizon of thick 100nm.
The reflection horizon of cathode vacuum spraying plating (sputtering) film forming, in order to keep the thickness uniform shape, the degree of depth (Db) of set mark (label) information pits (pit) on the reflection horizon in clamping (clamping) zone (area), with the identical 100nm of being of the degree of depth that mark (label) information pits (pit) before the reflection horizon is set, half range wide (Wb) also is and the wide 250nm that is all mutually of half range before the reflection horizon is set.In addition, being provided with the pit depth (Da) on the uvea surface in reflection horizon equally at posting field (area), is to be all 100nm mutually with the pit depth that is provided with before the reflection horizon, and half range wide (Wa) also is and the wide 250nm that is all mutually of half range before the reflection horizon is set.
Then, by spin coating method (spin-coat) method, be that the uv-hardening resin that is coated with of 10 μ m forms bonding coat for covering the reflection horizon that clamping (clamping) zone (area) and posting field (area) form, being coated with thickness.
Next, use the polycarbonate resin injection moulding, modulate sky (dummy) substrate that has with the identical shaped ditch of foregoing substrate pregroove marks (pre-groove) and mark (label) information pits (pit).The sky that modulates (dummy) substrate, thickness is 0.6mm.
Next, the bonding coat that the ditch that will form on empty (dummy) substrate is set up on substrate noted earlier, with sky (dummy) substrate-placing that modulates on bonding coat.Then, to make the rotation of superimposed sky (dummy) substrate and substrate at a high speed, remove unnecessary uv-hardening resin.Then, uv-hardening resin is solidified, will the substrate and the mutual bonding optical information recording medium of sky (dummy) substrate that does not have recording layer of recording layer be arranged thereby modulate by the ultraviolet ray irradiation.
Because the refractive index of the uv-hardening resin that hardened, equate substantially with the refractive index of sky (dummy) substrate of polycarbonate resin, even so form ditch in the bonding aspect of empty (dummy) substrate, the thickness of empty (dummy) substrate also is uniformly, does not influence the reflection of light state.Therefore, do not see that pregroove marks (pre-groove) and mark (label) information pits (pit) are dual overlapping.
Then; face (index face (label) side) at the opposite side that does not form the sky of ditch (dummy) substrate; in the scope of distance center from φ 21mm to the outside; with silk screen (screen) print process, scraper coating (knife-coat) print process, spin coating method (spin-coat) method etc., form white protective seam.
On the other hand, modulation is with 14 parts of polyvinyl alcohols (Japanese synthetic chemistry Co., Ltd. system: trade name " EG-05 ", saponification degree 86.5～89.0%), the inferior acrylate of polyoxyethylene (40) (Kyoeisha Chemical Co., Ltd.'s system: trade name " light acrylate 9EG-A ") 5.7 parts, photopolymerization catalyzer (ChibaSpecialityChemical Co., Ltd. system: trade name " IRGACURE2959 ") 0.3 part, the UV cured property water-based masking liquid of 80 parts of compositions of water.
Then, by spin coating method (spin-coat), be coated in the water-based masking liquid of modulation in advance on the white protective seam that on empty (dummy) substrate, forms after, irradiation 500mJ/cm
2Ultraviolet ray make its sclerosis, forming thickness is printing ink (ink) accommodating layer of 20 μ m.With above-mentioned white protective seam and printing ink (ink) accommodating layer with make and be printed layer together.Be printed layer, cover clamping (clamping) zone (area) of optical information recording medium, be arranged on the whole index face (label) of sky (dummy) substrate.Moreover the condition of spin coating method (spin-coat) is that the water-based masking liquid about 10ml was dripped on interior week on the white protective seam; number of revolutions with 1000rpm is applied on the whole coated face; then increase number of revolutions to 2,000rpm carries out throwing away of water-based masking liquid.Being printed on the layer on sky (dummy) substrate of modulation like this is with ink-jet printer (ink-jet-printer) printed images.
Signal face side from optical information recording medium, the formation of using a plurality of marks (label) information pits (pit) is gone up record mark (label) information in clamping (clamping) zone (area) to be observed, can observe clearly, thus the expression zone that can guarantee mark (label) information.
In addition, the part of a plurality of marks (label) information pits (pit) that form in clamping (clamping) zone (area) of substrate does not form recording layer, and also form and the identical shaped ditch of mark (label) information pits (pit) in the part in clamping (clamping) zone (area) of corresponding empty (dummy) substrate, so, via bonding coat adhesive base plate and sky (dummy) substrate the time, by improving surface area, can improve the bond strength of substrate and sky (dummy) substrate to bonding coat.
And, from the result of index face (label) side by the printed image of visual observations, do not see the image of going up printing at posting field (area) and go up the separatrix of the image of printing, seemed marginal problem thereby solved being printed the image that prints on the layer in clamping (clamping) zone (area).
Moreover, in present embodiment, in the time of will on substrate, setting up the reflection horizon, the half range wide (Wb) of mark (label) information pits (pit) in clamping (clamping) zone (area), form identical (250nm) with the half range wide (Wa) of the pit on the uvea surface in reflection horizon on the pregroove marks that is layered in posting field (area) (pre-groove), but be not limited to this.
That is, wide not simultaneously when their half range, by the track space of appropriate change, also can adjust the wide ratio of track space and half range in mark (label) information pits (pit) of clamping (clamping) zone (area) formation.For example, (the Wa/ track space is the relation of (Wb/ track space b) a) can be adjusted into maintenance.By adjusting this ratio, can with visual observations the light reflection case during to index face (label) make good state.
Moreover, in the example of present embodiment, ditch depth to mark (label) information pits (pit) that forms at clamping (clamping) zone (area), the more shallow example of ditch that forms than posting field (area) is illustrated, but in the present embodiment, the ditch depth of mark (label) information pits (pit) is not subjected to the restriction of this example, can carry out various changes.
For example, Fig. 7 is that to go up the non-record regenerating that forms be the figure of identical optical information recording medium at clamping (clamping) zone (area) with the ditch depth of pit (pit) with at the ditch depth that posting field (area) is gone up the pregroove marks (pre-groove) of formation in explanation.As shown in Figure 7, optical information recording medium, go up the non-record regenerating that forms in clamping (clamping) zone (area) of substrate identical with the ditch depth of going up the pregroove marks (pre-groove) that forms at posting field (area) with the ditch depth of pit (pit).Here, non-record regenerating is configured to the formation that a plurality of dimple-shaped become regulation with pit (pit).In addition, the part of the pit by connecting clamping (clamping) zone (area) do not form substrate forms the character information formation portion that character information is appeared in one's mind.
Claims (13)
1. optical information recording medium, it be with substrate with sky (dummy) the substrate optical information recording medium bonded to each other that is printed layer is set for clamping (clamping) zone (area) that covers corresponding described substrate and posting field (area) part, it is characterized in that:
Described substrate has:
Has the pit (pit) that the non-record regenerating of the regulation shape that forms at described clamping (clamping) zone (area) is used;
The described posting field (area) that is provided with at described clamping (clamping) zone (area) outer circumferential side go up form seek rail (tracking) with pregroove marks (pre-groove); With
Go up the reflection horizon that forms at described pit (pit) and described pregroove marks (pre-groove).
2. optical information recording medium as claimed in claim 1 is characterized in that:
A plurality of described pit (pit) by forming on the whole substantially zone in described clamping (clamping) zone (area) comes expressive notation (label) information.
3. optical information recording medium as claimed in claim 1 is characterized in that:
Form recording layer and reflection horizon in order on described pregroove marks (pre-groove) surface in described posting field (area), only form the reflection horizon by described pit (pit) surface, this clamping (clamping) zone (area) is equated substantially with the contrast of this posting field (area) in this clamping (clamping) zone (area).
4. optical information recording medium as claimed in claim 1 is characterized in that:
Also has character string pit (pit) that form in described clamping (clamping) zone (area), expression regulation character information.
5. optical information recording medium is characterized in that:
Be equipped with:
Have the pregroove marks (pre-groove) of seeking rail (tracking) usefulness that go up to form at posting field (area) and go up the pit (pit) that forms in clamping (clamping) zone (area) and go up the substrate in stacked reflection horizon at pit (pit) and pregroove marks (pre-groove);
Have by the bonding coat and the substrate that on described reflection horizon, form bonded to each other, with mark (label) face of bonding coat opposition side on, sky (dummy) substrate that is printed layer that forms for the part that covers corresponding described posting field (area) and described clamping (clamping) zone (area);
Described pit (pit) for expressive notation (label) information, forms a plurality of on the whole substantially zone in described clamping (clamping) zone (area).
6. optical information recording medium as claimed in claim 5 is characterized in that:
Described pit (pit) in described clamping (clamping) zone (area), forms the formation of lining up regulation, and described mark (label) information is formed by connecting the part that does not form described pit (pit) and appears provisioning information.
7. optical information recording medium as claimed in claim 5 is characterized in that:
Described pit (pit) forms in described clamping (clamping) zone (area) and lines up the regulation formation, and described mark (label) information is formed by the part that connects described pit (pit) and represents the information stipulated.
8. optical information recording medium as claimed in claim 5 is characterized in that:
When connecting described pit (pit), has the character string pit (pit) of expression regulation character information.
9. optical information recording medium as claimed in claim 8 is characterized in that:
Described character string pit (pit), (pit) deeper is formed than described pit.
10. optical information recording medium, it be by bonding coat with the optical information recording medium of empty (dummy) base plate bonding on the substrate that record regenerating is used, it is characterized in that:
Described substrate has:
The posting field (area) of the pregroove marks (pre-groove) of rail (tracking) usefulness is sought in formation; With
That formation forms than described pregroove marks (pre-groove) ditch depth more shallowly, be used for first pit (pit) of expressive notation (label) information and be used for improving and (dummy) clamping zone (area) of adhesive second pit (pit) of substrate;
Described sky (dummy) substrate,
With the index face (label) of described bonding coat opposition side on, have for what the part that covers corresponding described posting field (area) and described clamping (clamping) zone (area) formed and be printed layer.
11. optical information recording medium as claimed in claim 10 is characterized in that:
Has the reflection horizon that is set directly on described first pit (pit) and described second pit (pit).
12. a stamper (stamper), the optical information recording medium substrate that is printed layer of its part be provided with clamping (clamping) zone (area) that covers correspondence markings face (label) and posting field (area) of being used for being shaped is characterized in that,
Have:
Use jog at the pit (pit) that the part corresponding with described clamping (clamping) zone (area) forms; With
On the corresponding part of the described posting field (area) that is provided with described clamping (clamping) zone (area) outer circumferential side, form, and described pit (pit) use jog with the variform pregroove marks of jog (pre-groove).
13. stamper as claimed in claim 12 (stamper) is characterized in that:
Described pit (pit) is used jog, forms on the whole substantially zone of the part of the described clamping of correspondence (clamping) zone (area).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005117161 | 2005-04-14 | ||
| JP2005117161 | 2005-04-14 | ||
| JP2005232858 | 2005-08-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1848263A true CN1848263A (en) | 2006-10-18 |
| CN100416683C CN100416683C (en) | 2008-09-03 |
Family
ID=37077792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100074960A Expired - Fee Related CN100416683C (en) | 2005-04-14 | 2006-02-14 | Optical information recording medium and stamper |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4408138B2 (en) |
| CN (1) | CN100416683C (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0844611A3 (en) * | 1993-01-21 | 2006-11-29 | Matsushita Electric Industrial Co., Ltd. | Optical disk |
| JP3062452B2 (en) * | 1997-04-24 | 2000-07-10 | 株式会社リコー | optical disk |
| JP3492172B2 (en) * | 1997-12-02 | 2004-02-03 | 花王株式会社 | optical disk |
| TW493172B (en) * | 1999-02-23 | 2002-07-01 | Taiyo Yuden Kk | Optical information medium and recording method therefor |
| JP2004199771A (en) * | 2002-12-18 | 2004-07-15 | Ricoh Co Ltd | Optical information medium |
-
2006
- 2006-02-14 CN CNB2006100074960A patent/CN100416683C/en not_active Expired - Fee Related
-
2009
- 2009-09-09 JP JP2009208010A patent/JP4408138B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN100416683C (en) | 2008-09-03 |
| JP2010015684A (en) | 2010-01-21 |
| JP4408138B2 (en) | 2010-02-03 |
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