CN1205098A - Magnetic disk and magnetic recording/reproducing apparatus - Google Patents
Magnetic disk and magnetic recording/reproducing apparatus Download PDFInfo
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- CN1205098A CN1205098A CN 95197999 CN95197999A CN1205098A CN 1205098 A CN1205098 A CN 1205098A CN 95197999 CN95197999 CN 95197999 CN 95197999 A CN95197999 A CN 95197999A CN 1205098 A CN1205098 A CN 1205098A
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- disk
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- equal
- protective seam
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- 230000001050 lubricating effect Effects 0.000 claims abstract description 176
- 239000000314 lubricant Substances 0.000 claims abstract description 112
- 150000001875 compounds Chemical class 0.000 claims description 191
- 230000001681 protective effect Effects 0.000 claims description 172
- 239000010702 perfluoropolyether Substances 0.000 claims description 150
- 239000000126 substance Substances 0.000 claims description 101
- 239000002904 solvent Substances 0.000 claims description 75
- 238000005406 washing Methods 0.000 claims description 58
- 230000003068 static effect Effects 0.000 claims description 57
- 125000000524 functional group Chemical group 0.000 claims description 53
- 239000000758 substrate Substances 0.000 claims description 44
- 239000013078 crystal Substances 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 41
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 229910018540 Si C Inorganic materials 0.000 claims description 14
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 14
- 239000004610 Internal Lubricant Substances 0.000 claims description 8
- -1 perfluorocarbon compound Chemical class 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims 24
- 238000005461 lubrication Methods 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 58
- 239000000243 solution Substances 0.000 description 31
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 20
- 238000003618 dip coating Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000007669 thermal treatment Methods 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
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- 238000003825 pressing Methods 0.000 description 3
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- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
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- 238000007788 roughening Methods 0.000 description 2
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- 238000009987 spinning Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010017389 Frotteurism Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- Magnetic Record Carriers (AREA)
- Lubricants (AREA)
Abstract
A magnetic disk having an information area and a CSS area formed on the surface thereof and covered with a lubricating film in the information area and the CSS area. The lubricating film ensures low viscosity and low sliding friction in the information area and contact on-off durability in the CSS area. Since the lubrication between the magnetic disk and the magnetic head can be prevented from occurring at the time of normal operation or at the time of sudden stop of an accident during the operation of the magnetic disk, high reliability can be ensured. The invention also provides a magnetic recording and reproducing apparatus using the magnetic disk. Since the lubricating film formed in the information region of the magnetic disk is firmly fixed to the surface of the magnetic disk, the sticking phenomenon is hard to occur, and the lubricating film also has a sufficient thickness to ensure durability under sliding friction. The lubricating film in the CSS region contains both a lubricant having a high anchoring force to the magnetic disk and a lubricant having a low anchoring force, and therefore has high contact on-off durability. Thus, a highly reliable magnetic disk and a highly reliable magnetic recording and reproducing apparatus can be obtained.
Description
The present invention relates to disk and magnetic recording/reproducing device, more particularly, relate to height and record disk and the magnetic recording/reproducing device that density is feature.
Background technology
Hard type magnetic recording/reproducing device is now just being followed and is being reduced disk diameter, the size that reduces recording/displaying device and the trend that density is recorded in weight, increase.The density of recording of disk becomes bigger, and the distance between disk and the magnetic head (or flying height) will become littler.Can expect that in the immediate future, recording playback will realize under magnetic head and the complete state of contact of disk.At that time, disk will bear much strict sliding condition.On the other hand, littler flying height of density requirements and more smooth magnetic disk surface (floating for stable) are recorded in increase.Its consequence is, head slider (rest magnetic head) is long (following slip this state under is referred to as the contact slip) than before in time of slide on the disk (keeping contact with it), disk can bear and be big kinetic friction and abrasion than before when starting, and produces limit static friction (hereinafter referred to as stiction) between magnetic head and disk.Because disk fragmentation and head wear can take place in result that the kinetic force of friction that the contact slip causes increases once in a while, at this moment just can not recording playback.What is more, and very big static friction can make disk can not start and make magnetic disk head to damage.
In order to address the above problem, developed a kind of novel disk with two zones that separate, head slider is parked in one of them zone when disk is static, and when the disk start-stop, it stands the contact start again and contacts shutdown; Wherein recording playback is realized by magnetic head in another zone when disk rotates.(last zone is called contact start-stop (CSS) district, and one zone, back is called the block of information.) usually the CSS district is made in the inner ring of disk, and its surperficial roughening, to prevent static friction.In contrast, the surface of block of information then is flattened cunning, to guarantee steadily floating of magnetic head.Disk with CSS district and block of information needs special lubricating film and lubrication technology technology.For example the open No.36277/1994 of Jap.P. discloses a kind of method that prevents static friction, and it is to realize by means of the way of making jut (about 5nm height) on the slider rail level in the CSS district.In addition, the open No.111292/1994 of Jap.P. also discloses and has used liquid lubricant in CSS district and in the method for block of information use solid lubricant.These prior art processes relate to the lubricating film that is adopted on the disk of making CSS district and block of information, and lubricating film then can be realized the desired sliding properties to CSS district and block of information to a certain extent.Between the lubricating film in CSS district and the lubricating film of block of information tangible difference is arranged on requiring, this is because the state that magnetic head-disk slides in these two zones is inequality.In the CSS district, by means of might reducing static friction to the magnetic disk surface roughening a little, but, therefore very durable lubricating film need be arranged because disk can come in contact slip when starting and stopping.And in the block of information, the surface of disk must be that roughness is very little, and the static friction of lubricating film should be very low.Its reason is to be positioned at the block of information and disk when stopping suddenly (because certain fortuitous event) when head slider, and head slider may contact (causing strong static friction) with the block of information.Therefore CSS district lubricating film must be distinguished mutually with the lubricating film of block of information on greasy property.
Now the lubricant that uses of disk is to contain the per-fluoro polyether compound that can be adsorbed onto the functional group that magnetic disk surface gets on.This lubricant causes forming one deck lubricating film, and this film system is by the rete that is adsorbed onto magnetic disk surface securely and adsorb very weakly or the rete that is not adsorbed onto magnetic disk surface constitutes.Firmly the lubricating layer of absorption can not separated from disk by with the perfluocarbon solvent washing time when disk.But then, the lubricating layer that adsorbs very weakly the way of available flushing separate from disk at an easy rate.But this lubricating layer that adsorbs very weakly plays an important role in the CSS district that needs good durability, because in order to set up stable Frotteurism, needs a part of lubricant and transfer to the slipping plane of head slider and get on when sliding.If do not have in the CSS district this floor adsorb very weak lubricating layer, just can not keep satisfied reliability.In contrast, the block of information but requires very low static friction, because must avoid lubricant to adhere in the gap of magnetic head and disk when magnetic head contacts with the block of information in unexpected hang-up, also must avoid magnetic head undue scratch lubricant when search simultaneously.Therefore, be easy to just static friction be had the opposite effect, be unfavorable for permanance at the weak adsorbed layer that magnetic disk surface moves.Based on this reason, weak adsorbed layer must be as much as possible little.If use the lubricant of common absorbent-type on the whole surface of disk, and separately the block of information is washed to remove weak adsorbed layer, then the thing followed must be that the lubrication film thickness of block of information reduces.Now, coming in contact the chance of slip in the block of information will be much smaller than the CSS district; But, on the disk set in the future that more reduces in the magnetic head floats gap, between magnetic head and disk, come in contact slip even also have more opportunity in the block of information.Therefore, in the near future, will require the block of information to have good permanance.This means that the lubricating film of block of information must have enough thickness, slide to bear sporadic contact.
Above-described prior art processes does not solve these technical matterss fully.The open disclosed technology of No.111292/1994 of Jap.P. is to be coated with liquid lubricant by means of adding in the CSS district, makes two zones all meet the requirements of lubricating property separately and add the way that is coated with solid lubricant in the block of information.This technology is disturbed deeply because the formation lubricant film needs complicated method.The open disclosed technology of No.53027/1992 of Jap.P. is by means of the lubricating film of block of information being done to such an extent that come the guarantee information district to have low static friction and the CSS district has good permanance than the lubricating film in CSS district is thin.But this technology is also unsatisfactory, because the lubricating film of block of information must keep certain thickness could guarantee favorable durability.Now, also there are not effective means to guarantee that the disk of making CSS district and block of information has gratifying slip reliability.
The present invention has solved the problems referred to above that exist in the prior art processes fully.The purpose of this invention is to provide effective method and guarantee that the disk of making CSS district and block of information has gratifying slip reliability.Another object of the present invention provides high performance disk and the magnetic recording/reproducing device that this initiative method of use produces.
Summary of the invention
The feature of disk of the present invention is the lubricating layer that forms in the above with following peculiar methods.In the block of information of disk, the lubricating layer of weak absorption is done as far as possible for a short time, and guaranteeing low static friction, but lubricating film is done enough thickly, and (magnetic head with disk between) is contingent once in a while to contact slip to bear.This project be strong adsorption to reach in the lubricant of magnetic disk surface or in way with the lubricant that aftertreatment was coated with by means of using.In the CSS district of disk, form the weak adsorpting lubrication floor that is difficult for causing static friction,, and consider that lubricant can move to this fact on the head slider easily with the permanance of satisfaction guaranted.The invention discloses the method and the magnetic recording/reproducing device of following disk, production disk.
First content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, this film contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression: R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) this lubricating film can firmly be bonded to the lip-deep lubricant of diaphragm and another kind of fixed that very weak lubricant is formed on the diaphragm surface by a kind of; the amount of the weak concreted lubricant that is contained in the lubricating film that the CSS district forms is no less than 10% of CSS district internal lubricant total amount, and the amount of the weak concreted lubricant that is contained in the lubricating film that the block of information forms then is less than 10% of block of information internal lubricant total amount.
Second content of the present invention relates to defined disk in the above-mentioned first content; this disk is characterised in that; lubricating film can firmly be bonded to the lip-deep lubricant of cuticula and another kind of fixed that very weak lubricant is formed on the diaphragm surface by a kind of; the former can not fallen by the perfluocarbon solvent washing, and the latter can be fallen by the perfluocarbon solvent washing.
The 3rd content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; This lubricant is applied on the surface of whole magnetic disk, the surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation, CSS uses in the district perfluocarbon solvent washing subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 4th content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; This lubricant is applied on the surface of whole magnetic disk, and the surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; Whole magnetic disk surface perfluocarbon solvent washing; The CSS district applies with the perfluorocarbon compound that contains adsorbability functional group that is selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 5th content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; This lubricant is applied on the surface of whole magnetic disk; The whole magnetic disk surface is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; Whole magnetic disk surface perfluocarbon solvent washing; The block of information can apply with the perfluorocarbon compound of the functional group of this diaphragm surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression subsequently; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 6th content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, and this lubricant contains and is selected from above-mentionedly with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression, contains the functional group that can chemical reaction take place with the diaphragm surface in this kind compound; This lubricant application is on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; The surface of whole magnetic disk is washed with perfluocarbon solution; The block of information can apply with the perfluorocarbon compound of the functional group of this diaphragm surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression subsequently; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 7th content of the present invention relates to a kind of method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; On the protective seam surface of whole magnetic disk, add and be coated with one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; The surface of whole magnetic disk is heated to above 80 ℃ or with the surface or the block of information of ultraviolet ray irradiation whole magnetic disk; And with perfluocarbon solvent washing CSS district, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 8th content of the present invention relates to a kind of method of making as the defined disk of the 7th content, wherein also comprise: after with perfluocarbon solvent washing whole magnetic disk surface, also apply the CSS district with being selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (I) to (III) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 9th content of the present invention relates to a kind of method of making as the defined disk of the 7th content; wherein also comprise: after surface with perfluocarbon solvent washing whole magnetic disk; also apply be selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression and contain can with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The tenth content of the present invention relates to a kind of method of making as the defined disk in the 7th aspect, wherein also comprise: be higher than 80 ℃ or in that the whole magnetic disk surface is warmed to after the ultraviolet ray irradiation, also apply the per-fluoro polyether compound that contains adsorbability functional group on the surface of whole magnetic disk, this compound is to be selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression; In addition, after with perfluocarbon solvent washing block of information, also apply the per-fluoro polyether compound be selected from the functional group that containing of above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression can chemically reactive, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 11 content of the present invention relates to a kind of magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, contain in the film be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; This lubricating film can firmly be bonded to the lip-deep lubricant of diaphragm and another kind of and diaphragm surface are fixed that very weak lubricant is formed by a kind of; The amount of contained weak concreted lubricant is no less than 10% of CSS district internal lubricant total amount in the lubricating film that the CSS district forms, the amount of contained weak concreted lubricant then is less than 10% of block of information internal lubricant total amount in the lubricating film that the block of information forms, like this, just make the head slider that takes place in the block of information and the limit static friction between the disk and kinetic friction be less than or equal to 1.5 and 1.0 respectively, head slider that takes place in the CSS district and the limit static friction between the disk and kinetic friction are less than or equal to 1.0 and 0.5 respectively.
The 12 content of the present invention relates to a kind of magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, contain in the film be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; This lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk all is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; The CSS district uses the perfluocarbon solvent washing subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm, and make the head slider that in the block of information, takes place and the limit static friction between the disk and kinetic friction be less than or equal to 1.5 and 1.0 respectively, and head slider that takes place in the CSS district and the limit static friction between the disk and kinetic friction are less than or equal to 1.0 and 0.5 respectively.
The 13 content of the present invention relates to a kind of as the defined magnetic recording/reproducing device of the 12 content, it is characterized in that, the block of information of disk is after using the perfluocarbon solvent washing, the coated per-fluoro polyether compound that contains adsorbability functional group that is selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 14 content of the present invention relates to a kind of as the defined magnetic recording/reproducing device of the 12 content; it is characterized in that; after the perfluocarbon solvent washing is used in the block of information of disk; whole magnetic disk surface is coated be selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression contain can with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 15 content of the present invention relates to a kind of magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The diaphragm surface-coated of whole magnetic disk be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression after, the surface of whole magnetic disk is heated to above 80 ℃ or shine whole magnetic disk surface or block of information with ultraviolet ray; On the whole magnetic disk surface, apply the per-fluoro polyether compound that contains adsorbability functional group be selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression; And after with perfluocarbon solvent washing block of information, coating is selected from the per-fluoro polyether compound of the functional group that containing of above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression can chemically reactive, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm; And making the head slider that in the block of information, takes place and the limit static friction between the disk and kinetic friction be less than or equal to 1.5 and 1.0 respectively, head slider that takes place in the CSS district and the limit stiction between the disk and kinetic force of friction are less than or equal to 1.0 and 0.5 respectively.
The 16 content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam on this whole magnetic disk surface adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n
-CONH-C
3H
6-Si(OC
2H
5)
3???????????????(VI)C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n
-COO-
+NH
3-C
6H
4-O-C
6H
5???????(VII)F(CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH??????????????????????????????(VIII)HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH????????????????????????(IX)HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n
-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), the surface of whole magnetic disk are heated to above 80 ℃ or block of information ultraviolet ray irradiation; CSS uses in the district perfluocarbon solvent washing subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 17 content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam on this whole magnetic disk surface adds and scribbles one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; The surface of whole magnetic disk is heated to above 80 ℃ or block of information ultraviolet ray irradiation; The surface of whole magnetic disk perfluocarbon solvent washing; And the CSS district applies with the per-fluoro polyether compound that contains adsorbability functional group that is selected from above-mentioned per-fluoro polyether compound with chemical formula (VII) to (XIII) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is greater than 1nm.
The 18 content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (VIII) expression; This lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation; Block of information perfluocarbon solvent washing subsequently; and the block of information can be applied with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 19 content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, and this lubricant contains and is selected from above-mentionedly with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (VI) expression, and this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation; The diaphragm of whole magnetic disk surface applies with the per-fluoro polyether compound that contains adsorbability functional group that is selected from above-mentioned per-fluoro polyether compound with chemical formula (VII) to (XIII) expression; Block of information perfluocarbon solvent washing subsequently; and the block of information can be applied with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 20 content of the present invention relates to a kind of disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, and this lubricant contains and is selected from above-mentionedly with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression, and this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation, CSS uses in the district perfluocarbon solvent washing subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 21 content of the present invention relates to a kind of method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; On the protective seam surface of whole magnetic disk, add and be coated with one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; The surface of whole magnetic disk is heated to above 80 ℃ or with the surface or the block of information of ultraviolet ray irradiation whole magnetic disk, and with the surface of perfluocarbon solvent washing whole magnetic disk; And apply the CSS district with the per-fluoro polyether compound that contains adsorbability functional group that is selected from above-mentioned per-fluoro polyether compound with chemical formula (VII) to (XIII) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 22 content of the present invention relates to a kind of method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; On the protective seam surface of whole magnetic disk, add and be coated with one deck lubricant, this lubricant contain be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; The surface of whole magnetic disk is heated to above 80 ℃ or with the surface or the block of information of ultraviolet ray irradiation whole magnetic disk; And with the surface of perfluocarbon solvent washing whole magnetic disk; And can apply the block of information with the per-fluoro polyether compound of the functional group of protective seam surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 23 content of the present invention relates to a kind of method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; On the protective seam surface of whole magnetic disk, add and be coated with one deck lubricant, this lubricant contain be selected from above-mentioned with at least a in the per-fluoro polyether compound of chemical formula (IV) to (VI) expression contain can with the compound of the functional group of diaphragm surface chemically reactive; The surface of whole magnetic disk is heated to above 80 ℃ or with the surface of ultraviolet ray irradiation whole magnetic disk; Apply the surface of whole magnetic disk with the per-fluoro polyether compound that contains adsorbability functional group that is selected from the per-fluoro polyether compound of representing with chemical formula (VII) to (XIII); And with perfluocarbon solvent washing block of information; and can be applied with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
The 24 content of the present invention relates to a kind of magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and was coated with one deck lubricating film, contain in the film be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; The surface of whole magnetic disk is heated to above the surface of 80 ℃ or whole magnetic disk or block of information with the ultraviolet ray irradiation subsequently, and with PFPE solvent washing block of information, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm, and make the limit static friction between head slider and disk and the kinetic friction that in the block of information, take place be less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
The 25 content of the present invention relates to a kind of magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, contain in the film be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation subsequently; And with perfluocarbon solvent washing whole magnetic disk surface, the CSS district then applies with the per-fluoro polyether compound that contains adsorbability functional group that is selected from above-mentioned per-fluoro polyether compound with chemical formula (VII) to (XIII) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm, and make the limit static friction between head slider and disk and the kinetic friction that in the block of information, take place be less than or equal to 1.5 and 1.0 respectively, and head slider that takes place in the CSS district and the limit static friction between the disk and kinetic friction are less than or equal to 1.0 and 0.5 respectively.
The 26 content of the present invention relates to a kind of magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam of whole magnetic disk add scribble be selected from above-mentioned with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation subsequently; And with perfluocarbon solvent washing block of information; The block of information also can apply with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (VI) to (VI) expression; so that the thickness of the lubricating film that forms in the CSS district is greater than 1.5nm; the thickness of the lubricating film that forms in the block of information is greater than 1nm; and make the limit static friction between head slider and disk and the kinetic friction that in the block of information, take place be less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
The 27 content of the present invention relates to a kind of magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam of whole magnetic disk add scribble be selected from above-mentioned with at least a in the per-fluoro polyether compound of chemical formula (IV) to (VI) expression contain can with the compound of the functional group of protective seam chemically reactive; The surface of whole magnetic disk is heated to above 80 ℃ or with ultraviolet ray irradiation subsequently; The surface of whole magnetic disk applies with the per-fluoro polyether compound that contains adsorbability functional group that is selected from above-mentioned per-fluoro polyether compound with chemical formula (VII) to (XIII) expression; And with perfluocarbon solvent washing block of information; The block of information can apply with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive with being selected from containing of above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm; the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm; and make the limit static friction between head slider and disk and the kinetic friction that in the block of information, take place be less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
The 28 content of the present invention relates to a kind of as the defined disk of first content, and its diameter is for being less than or equal to 88.9mm.
The 29 content of the present invention relates to a kind of as the defined disk of the 7th content, and its diameter is for being less than or equal to 88.9mm.
The 30 content of the present invention relates to a kind of as the defined disk of the 11 content, and its diameter is for being less than or equal to 88.9mm.
According to the present invention, there is lubricating layer in the CSS district, and it is by firmly fixed lubricant and fixed that very weak lubricant is formed, so that guarantee favorable durability, and also there is lubricating layer the block of information, and it mainly is made up of firm fixed lubricant, so that reduce static friction.(weak concreted lubricant) lubricating layer of block of information need have certain thickness, slides so that can tolerate contact, and this is owing to reduced flying height recently, also may come in contact slip accidentally in the block of information.For this reason, not only must select the lubricant that contains energy functional group chemically reactive or adsorbability for use, perhaps increase the firmly lubricating layer thickness of fixed lubricant, but also will apply twice in the block of information by means of heating or UV treatment.On the contrary, if seldom in CSS district weak concreted lubricant quantity, twice of also available lubricant application.The lubricating layer of this spline structure can make block of information and CSS district show reliable disk and the desired satisfied sliding capability of disk set.
The accompanying drawing summary
Fig. 1 illustrates the skeleton view of disk of the embodiment of the invention 1 manufacturing and the sectional drawing on the border between CSS district and the block of information.
Fig. 2 is an apparatus sketch of doing CSS test and static friction test.
Fig. 3 is the sectional drawing of the magnetic recording/reproducing device of embodiment of the present invention.
Implement optimal mode of the present invention
For a more detailed description to the present invention below in conjunction with embodiment, these embodiment should not limit the scope of the invention.Embodiment 1
On the bright finished aluminium alloy substrate in surface (3.5 inches of diameters), in turn coat NiP crystal seed layer (thick 10 μ m), Cr layer (thick 0.5 μ m), Co-Cr-Pt layer (thick 60nm) and carbon protective layer (thick 20nm) to be prepared into disk with gunite.One deck fluoride resin particle (particle diameter 0.5 μ m) gone up with electrostatic coating in a zone (radius 15-20mm) of this disk.Etching (10nm is dark) has been carried out with oxygen in the whole surface of disk.The fluoride resin particle is removed in the water flushing.Just in the zone of covering radius 15 to 20mm, form uniform cylindrical protrusion (diameter 0.5 μ m) with such method.Formed the CSS district in this zone, its center line average roughness is Ra 15nm, and has formed smooth block of information in other zone, and its center line average roughness is Ra 1.2nm.
Then, disk is dipped in (in order the to apply) solution (1), this solution (1) is to dissolve in forming with the per-fluoro polyether compound of following chemical formula (IV) expression of 0.01% (weight) in fluoride solvent (" PF 5052 ", Sumitomo 3M company limited produces): F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) condition of immersion coating is as follows:
Immerse the speed of solution: 10mm/s
The residence time in solution: 180s
Speed from the solution taking-up: 2.5mm/s was just heated 2 hours down at 100 ℃ behind coated disk bone dry.This thermal treatment meeting causes that chemical reaction takes place for the per-fluoro polyether compound (IV) and the surface of protective seam, therefore is bonded on the surface of disk securely.Subsequently, disk is dipped in (in order to apply with above-mentioned same method) solution (2), solution (2) is to dissolve in forming with the per-fluoro polyether compound of following chemical formula (XI) expression of 0.001% (weight) in fluoride solvent (" PF 5052 ", Sumitomo 3M company limited produces): F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) behind the disk bone dry that applied, its block of information is with above-mentioned perfluocarbon solvent washing.Flushing is with spinner spinning disk (1000 rev/mins), finishes to block of information ejection of solvent (50ml/ branch) simultaneously.(another kind of purging method is that the block of information is immersed in the solvent and spinning disk.)
The disk of Huo Deing like this, its CSS district has the lubricating layer that played chemical reaction with magnetic disk surface.This lubricating layer is made up of the weak bonding course of firm bonding course and per-fluoro polyether compound (XI).In addition, the block of information of disk has the firm fixed lubricating layer that almost all is made of per-fluoro polyether compound (IV).The lubricating layer thickness in block of information and CSS district is respectively 2.2nm and 2.7nm.Fig. 1 illustrates the appearance of the prepared disk that goes out of present embodiment.Fig. 3 is for showing the sectional drawing on the border 3 between CSS district and the block of information.
The disk that sprayed has passed through contact start-stop (CSS) test and the static friction test of carrying out with device shown in Figure 2 under following condition.
Tested disk 7 is enclosed on (and fixing with disk compactor 9) axle 8, and axle directly is connected with the motor of this bottom of device.Head slider 12 is that word order formula (in linetypc) (is used Al
2O
3The 20T type that TiC makes), its slide rail surface is to contact with disk on the rotation direction of disk.Head slider 12 is fixed on the sway brace 13, and sway brace then is connected with force cell 10.Force cell 10 is fixed on the stand 11, and stand 11 can radially move, and therefore just might test each track.Force cell 10 can be measured the friction force that takes place when disk rotates between head slider 12 and disk.
When test CSS district, disk with very short interval time repeated priming with stop (reaching 100,000 times).Be after 1,50,100,500,1000,5000,10000 and 10000 the integral multiple, all disk to be stopped in the CSS cycle index, allow magnetic head contact for 2 seconds with disk, disk then rotates with 10 rev/mins speed.Be determined at the maximum kinetic force of friction in this time.Simultaneously, write down the CSS cycle index that disk crash takes place.So-called disk crash is meant that carbon protective layer (as the substrate of lubricating layer) damages fully, the magnetosphere exposed state.Visible wearing and tearing slight crack is revealed in the disk crash meeting.When disk crash occurred, test just suspended.Disk crash appear at 10000 times the circulation with interior situation under, maximum kinetic force of friction is promptly represented with the maximum kinetic friction coefficient that records under the CSS period before the disk crash.The maximum (top) speed of disk is 5400 rev/mins, and magnetic head load is 3.0g.Disk (because magnetic head normally is in quick condition in the block of information) under magnetic head floats turned round 20 hours.In order to expect the unexpected hang-up of disk, also make disk stall at regular intervals (after on-test 4,8,12,16 and 20 hours).As test in the CSS district, magnetic head is put into 2 seconds of contact position, disk turns round under 10 rev/mins speed then, at this moment just can measure maximum kinetic force of friction.Running check wearing and tearing slight crack is answered on the surface of disk, decreases in case take place to draw, and test should suspend immediately.
Static friction can be measured with following method.Head slider is kept contacting 12 hours with disk, and disk is by slow rotation.The limit stiction that is taken place when just beginning to rotate can be measured.When measuring, CSS district and block of information all usefulness be 1 rev/min of load 3g and disk running speed.Measurement result is shown in Table 1.
Table 1
| The test of contact start-stop | The static friction test | |||||
| The CSS district | The block of information | Limit stiction (gram force) | ||||
| Maximum kinetic force of friction (gram force) | Draw CSS period when decreasing | Maximum kinetic force of friction (gram force) | Reach occur wearing and tearing slight crack institute through the time (hour) | The CSS district | The block of information | |
| Embodiment 1 | ????1.86 | ＞100000 | ????2.16 | ????＞20 | ????1.86 | ????2.12 |
| Embodiment 2 | ????1.67 | ＞100000 | ????2.38 | ????＞20 | ????1.95 | ????2.36 |
| Embodiment 3 | ????1.49 | ＞100000 | ????2.01 | ????＞20 | ????1.66 | ????2.43 |
| Comparative example 1 | ????7.86 | ????5000 | ????3.12 | ????＞20 | ????1.35 | ????2.31 |
| Comparative example 2 | ????1.82 | ＞100000 | ????3.51 | ????＞20 | ????1.86 | ????27.6 |
| Comparative example 3 | ????1.62 | ＞100000 | ????12.6 | ????8 | ????1.92 | ????2.28 |
| Comparative example 4 | ????1.51 | ＞100000 | ????2.95 | ????＞20 | ????1.69 | ????32.8 |
Comparative example 1 shows the effect that disk applies per-fluoro polyether compound (IV) separately.The block of information of embodiment 1 and CSS district have all provided satisfied CSS test and static friction test findings, and the block of information static friction of comparative example 1 is on the low side, the CSS district in the test of contact start-stop disk crash has taken place.Comparative example 2 shows and is applying the influence that block of information, per-fluoro polyether compound (IV) and per-fluoro polyether compound (XI) back is washed successively.In the case, the CSS district is satisfied, but the block of information is subjected to strong static friction.Embodiment 2
Repeat embodiment 1 usefulness injection method and prepare disk.Disk with embodiment 1 the same terms under be dipped into solution, this solution is to dissolve in forming with the per-fluoro polyether compound (VI) of following chemical formula (VI) expression of 0.005% (weight) in the fluoride solvent identical with embodiment 1.Promptly under 120 ℃, heat-treated 10 minutes after the dip-coating, and with the surface of above-mentioned same fluoride solvent washing whole magnetic disk.The thickness of lubricating layer is 0.75nm.(C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-
CONH-C
3H
6-Si (OC
2H
5)
3(VI) be dissolved in the above-mentioned fluoride solvent with the fluorine-based lubricant (VIII) of following chemical formula (VIII) expression and form the solution of 0.007% (weight).F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) applies with this solution by embodiment 1 same method, and uses as described above with independent flush information district of a kind of fluoride solvent.Use spinner to apply per-fluoro polyether compound (VI) solution of one deck above-mentioned 0.005% (weight) once more in the block of information.The thickness of block of information and CSS district lubricating layer is respectively 1.96nm and 1.84nm.
The formed lubricating layer of this embodiment has been tested CSS performance and static friction performance under the condition identical with embodiment 1.Test result is shown in Table 1.CSS characteristic and the static friction properties of this embodiment all are better than comparative example 3, do not apply per-fluoro polyether compound (VI) in comparative example 3 once more.Under the contrast, though the test findings in comparative example 3 CSS districts is consistent with present embodiment, the wearing and tearing slight crack has appearred in its block of information.This is likely because magnetic head contacts with disk when floating in the block of information under the situation that disk rotates (very little because of flying height).The bad result of comparative example 3 is because the thickness of the lubricating layer of block of information is not enough to the permanance that keeps enough.Embodiment 3
Repeat embodiment 1 usefulness injection method and prepare disk.Disk is being dipped into solution under the condition similarly to Example 1, and this solution is to dissolve in forming with the per-fluoro polyether compound (XIII) of following chemical formula (XIII) expression of 0.005% (weight) in the fluoride solvent identical with embodiment 1.Promptly under 110 ℃, heat-treated 2 hours after the dip-coating, and with the surface of above-mentioned same fluoride solvent washing whole magnetic disk.The thickness of lubricating layer is 0.8nm.
To dissolve in the solution that is made into 0.007% (weight) in the above-mentioned fluoride solvent with the per-fluoro polyether compound (VII) of following chemical formula (VII) expression.C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n
-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) carry out dip-coating by embodiment 1 same method with this solution, and only separately the block of information is heated to 110 ℃ and continues 2 hours, use above-mentioned same fluoride solvent washing then.The lubricating layer thickness in block of information and CSS district is respectively 1.85 and 2.31nm.The formed lubricating layer of present embodiment is pressed same quadrat method test CSS performance and the static friction performance of embodiment 1.Test result is shown in Table 1.The CSS performance and the static friction performance of present embodiment all are better than comparative example 4, and comparative example 4 does not have the flush information district after applying per-fluoro polyether compound.Under the contrast, the CSS district of comparative example 4 is consistent with present embodiment, but very strong static friction has taken place in the block of information.Embodiment 4
Prepared disk is installed on the magnetic recording/reproducing device shown in Figure 3 (3.5 inches disks are suitable for) among the embodiment 1.Be in operation and cut off the power supply of this device,, and allow this device park 24 hours so that magnetic head stops in the block of information.When restarting, disk is normally recording playback still.Also carried out above-mentioned same test with disk prepared in the comparative example 5.But can not restart because of having strong static friction between head slider and the disk information area this moment.Comparative example 1
Prepare disk by embodiment 1 usefulness injection method.Disk is being dipped into solution under the condition similarly to Example 1, this solution is to dissolve in forming with the per-fluoro polyether compound (IV) of following chemical formula (IV) expression of 0.01% (weight) in fluoride solvent (" PF 5052 ", Sumitomo 3M company limited produces).F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) dip-coating is after bone dry, and carries out thermal treatment in 2 hours under 110 ℃.The thickness of lubricating layer is 1.3nm.This disk is pressed same quadrat method test CSS characteristic and the static friction properties of embodiment 1.Test findings is shown in Table 1.Comparative example 2
Prepare disk by embodiment 1 usefulness injection method.Disk is being dipped into solution under the condition similarly to Example 1, this solution is that the per-fluoro polyether compound (IV) with following chemical formula (IV) expression that dissolves in 0.01% (weight) in fluoride solvent (" PF 5052 ", Sumitomo 3M company limited produces) forms.F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) dip-coating is after bone dry, and carries out thermal treatment in 2 hours under 100 ℃.This disk with embodiment 1 the same terms under coated (pressing embodiment 1) a kind of solution with the quadrat method dip-coating, this solution is to dissolve in forming with the per-fluoro polyether compound (XI) of following chemical formula (XI) expression of 0.001% (weight) in fluoride solvent (" PF 5052 ", Sumitomo 3M company limited produces).F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) thickness of block of information and CSS district lubricating layer is 2.7nm.This disk is pressed embodiment 1 with quadrat method test CSS characteristic and static friction properties.Test result is shown in Table 1.Embodiment 3
Prepare disk by embodiment 1 usefulness injection method.Disk is being dipped into solution under the condition similarly to Example 1, this solution be with the used identical fluoride solvent of embodiment 1 in dissolve in the per-fluoro polyether compound (VI) with following chemical formula (VI) expression (with used identical of embodiment 1) of 0.005% (weight) and form.(C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n
-CONH-C
3H
6-Si (OC
2H
5)
3(VI) promptly under 110 ℃, carry out thermal treatment in 2 hours after the dip-coating.The surface of whole magnetic disk is by with above-mentioned same fluoride solvent washing.Then, disk with embodiment 1 the same terms under coated (pressing embodiment 1) a kind of solution with the quadrat method dip-coating, this solution is to dissolve in forming with the per-fluoro polyether compound (VIII) of following chemical formula (VIII) expression of 0.007% (weight) in above-mentioned fluoride solvent.F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) is with an above-mentioned same fluoride solvent flush information district.The lubricating layer thickness in block of information and CSS district is respectively 0.75nm and 1.84nm.This disk is pressed embodiment 1 same procedure test CSS characteristic and static friction properties.Test result is shown in Table 1.Comparative example 4
Prepare disk by embodiment 1 usefulness injection method.Disk is being dipped into solution under the condition similarly to Example 1, this solution be with the used identical fluoride solvent of embodiment 1 in dissolve in the per-fluoro polyether compound (XIII) with following chemical formula (XIII) expression (with used identical of embodiment 3) of 0.005% (weight) and form.
Promptly under 110 ℃, carry out thermal treatment in 2 hours after the dip-coating.Surface with above-mentioned same fluoride solvent washing whole magnetic disk.Then, this disk is coated (pressing embodiment 3 with the quadrat method dip-coating) a kind of solution under the condition identical with embodiment 3, and this solution is to dissolve in forming with the per-fluoro polyether compound (VII) of following chemical formula (VII) expression of 0.007% (weight) in above-mentioned fluoride solvent.C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n
-COO-
+NH
3-C
6H
4-O-C
6H
5(VII)
The lubricating layer thickness in block of information and CSS district is 2.31nm.Disk is pressed embodiment 1 same procedure test CSS characteristic and static friction properties.Test result is shown in Table 1.Comparative example 5
Comparative example 2 prepared disks be installed to the used identical magnetic recording/reproducing device of embodiment 1 on.This device is in operation and is cut off power supply, and allows this device park 24 hours.Owing in the block of information, exist a large amount of weak adsorpting lubrication agent, strong static friction is arranged, so disk can not restart between head slider and disk.
Claims (30)
1. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, contain in the film be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression, R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base.) this lubricating film is cemented in the lip-deep lubricant of diaphragm a little less than lip-deep lubricant of diaphragm and the another kind and formed by a kind of firmly being cemented in; the amount of the weak concreted lubricant that is contained in the lubricating film that the CSS district forms is no less than 10% of CSS district internal lubricant total amount, and the amount of the weak concreted lubricant that is contained in the lubricating film that the block of information forms then is less than 10% of block of information internal lubricant total amount.
2. the defined disk of claim 1; wherein this disk is characterised in that; lubricating film is cemented in the lip-deep lubricant of diaphragm a little less than lip-deep lubricant of diaphragm and the another kind and is formed by a kind of can firmly being cemented in; the former can not fallen by the perfluocarbon solvent washing, and the latter can be fallen by the perfluocarbon solvent washing.
3. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; CSS uses in the district perfluocarbon solvent washing subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
4. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation, the surface of whole magnetic disk perfluocarbon solvent washing, the CSS district applies with being selected from above-mentioned perfluorocarbon compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (I) to (III) expression subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
5. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; the surface of whole magnetic disk perfluocarbon solvent washing; subsequently the block of information be selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression and contain and can apply with the perfluorocarbon compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
6. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from following with chemical formula (I) to (III) expression, contain can with at least a compound in the per-fluoro polyether compound of the functional group of diaphragm chemically reactive; R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; the surface of whole magnetic disk perfluocarbon solvent washing; subsequently the block of information be selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression and contain and can apply with the perfluorocarbon compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
7. method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; On the protective seam surface of whole magnetic disk, add and be coated with one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) surface of whole magnetic disk is heated to above 80 ℃ or with ultraviolet ray irradiation whole magnetic disk surface or block of information; And with perfluocarbon solvent washing CSS district so that at the thickness of the lubricating film of CSS district formation more than or equal to 1.5nm, at the thickness of the lubricating film of block of information formation more than or equal to 1nm.
8. method as the defined manufacturing disk of claim 7, wherein also comprise: behind surface with perfluocarbon solvent washing whole magnetic disk, also apply the CSS district with being selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (I) to (III) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
9. method as the defined manufacturing disk of claim 7; wherein also comprise: after surface with perfluocarbon solvent washing whole magnetic disk; also apply be selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression and contain can with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
10. method as the defined manufacturing disk of claim 7, wherein also comprise: the surface of whole magnetic disk is being heated to above 80 ℃ or with after the ultraviolet ray irradiation, also on the surface of whole magnetic disk, apply and be selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (I) to (III) expression, and after using perfluocarbon solvent washing block of information, also apply and be selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain the functional group of energy chemically reactive with chemical formula (I) to (III) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
11. magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, contain in the film be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) this lubricating film is cemented in the lip-deep lubricant of diaphragm a little less than lip-deep lubricant of diaphragm and the another kind and formed by a kind of can firmly being cemented in; The amount of contained weak concreted lubricant is no less than 10% of CSS district internal lubricant total amount in the lubricating film that the CSS district forms, the amount of contained weak concreted lubricant is then less than 10% of block of information internal lubricant total amount in the lubricating film that forms in the block of information, like this, just make the limit static friction between head slider and disk and the kinetic friction that in the block of information, take place be less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
12. magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, contain in the film be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (I) to (III) expression; R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole surface or block of information ultraviolet ray irradiation; The CSS district uses the perfluocarbon solvent washing subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm, and the threshold friction between head slider and disk and the kinetic friction that take place in the block of information are less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
13. one kind as the defined magnetic recording/reproducing device of claim 12, it is characterized in that, the block of information of disk is selected from above-mentioned per-fluoro polyether compound coating per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (I) to (III) expression again after with the perfluocarbon solvent washing, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
14. one kind as the defined magnetic recording/reproducing device of claim 12; it is characterized in that; after the perfluocarbon solvent washing is being used in the block of information of disk; that the whole magnetic disk surface is selected from above-mentioned per-fluoro polyether compound with chemical formula (I) to (III) expression again and contain and to apply with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
15. magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; Whole magnetic disk diaphragm surface with after being selected from following at least a per-fluoro polyether compound and applying with chemical formula (I) to (III) expression, R
1-X-(CF
2CF
2O)
m-(CF
2O)
n-X-R
2(I) F (CF
2CF
2CF
2-O)
n-C
2F
4-X-R
3(II) F-(CF (CF
3)-CF
2-O)
n-CF (CF
3)-X-R
4(III) (m and n are integer in the formula; R
1, R
2, R
3And R
4Be hydrocarbon chain; X is that divalence is in conjunction with base) surface of whole magnetic disk is heated to above 80 ℃ or with ultraviolet ray irradiation whole magnetic disk surface or block of information, on the surface of whole magnetic disk, apply and be selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (I) to (III) expression; And after with fluorocarbons solvent washing block of information, add to be coated with and be selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain the functional group of energy chemically reactive with chemical formula (I) to (III) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm; And the limit static friction between head slider and disk and the kinetic friction that take place in the block of information are less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
16. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam on this whole magnetic disk surface adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(wherein m, n, p and q are integer), the surface of whole magnetic disk is heated to above 80 ℃ or block of information ultraviolet ray irradiation, CSS uses in the district perfluocarbon solvent washing subsequently, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
17. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam on this whole magnetic disk surface adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), the surface of whole magnetic disk are heated to above 80 ℃ or block of information ultraviolet ray irradiation; The surface of whole magnetic disk perfluocarbon solvent washing; And the CSS district applies with being selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (VII) to (XIII) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
18. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation; Block of information perfluocarbon solvent washing subsequently; and with the block of information be selected from above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression and contain and can apply with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
19. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (VI) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) (m and n are integer in the formula) this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation; The diaphragm surface of whole magnetic disk applies with being selected from following per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (VII) to (XIII) expression; C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), block of information perfluocarbon solvent washing subsequently; And the block of information be selected from above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression and contain and can apply with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
20. disk, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), this lubricant is applied on the surface of whole magnetic disk; The surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation; The CSS district use the perfluocarbon solvent washing subsequently so that at the thickness of the lubricating film of CSS district formation more than or equal to 1.5nm, at the thickness of the lubricating film of block of information formation more than or equal to 1nm.
21. method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; On the protective seam surface of whole magnetic disk, add and be coated with one deck lubricant, this lubricant contain be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
35i-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula) is heated to above 80 ℃ or with the surface or the block of information of ultraviolet ray irradiation whole magnetic disk with the surface of whole magnetic disk; And with the surface of perfluocarbon solvent washing whole magnetic disk; And with being selected from above-mentioned per-fluoro polyether compound coating CSS per-fluoro polyether compound and that contain adsorbability functional group district with chemical formula (VII) to (XIII) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
22. method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; Add on the protective seam surface of whole magnetic disk and be coated with one deck lubricant, this lubricant contains and is selected from following at least a per-fluoro polyether compound with chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula) is heated to above 80 ℃ or with the surface or the block of information of ultraviolet ray irradiation whole magnetic disk with the surface of whole magnetic disk; And with the surface of perfluocarbon solvent washing whole magnetic disk; And be selected from above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression and contain and can apply the block of information with the per-fluoro polyether compound of the functional group of protective seam surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
23. method of making disk, this disk has crystal seed layer, magnetosphere, protective seam and the lubricating layer that is laminated to successively on the non-magnetic substrate, this method comprises: make and have the CSS district of surfaceness more than or equal to the protective seam of Ra 10nm, the CSS district is positioned at the place that disk begins and place head slider when stopping operating; Make and have the block of information that surfaceness is less than or equal to the protective seam of Ra 3nm, the place of placing head slider when the block of information is positioned at the disk rotation; On the protective seam surface of whole magnetic disk, add and be coated with one deck lubricant, this lubricant contain be selected from following with chemical formula (IV) to (VI) expression contain can with at least a compound functional group of diaphragm surface chemically reactive, in the per-fluoro polyether compound; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) (m and n are integer in the formula) is heated to above 80 ℃ or with the surface of ultraviolet ray irradiation whole magnetic disk with the surface of whole magnetic disk; With being selected from the surface that following per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (VII) to (XIII) expression applies whole magnetic disk; C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula); and with perfluocarbon solvent washing block of information; and be selected from above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression and contain and can be applied with the per-fluoro polyether compound of the functional group of protective seam surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm.
24. magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and scribbles one deck lubricating film, contain in the film be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m in the formula, n, p and q are integer), the surface of whole magnetic disk is heated to above the surface of 80 ℃ or whole magnetic disk or block of information with the ultraviolet ray irradiation subsequently, and with perfluocarbon solvent washing block of information, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm, and the limit static friction between head slider and disk and the kinetic friction that take place in the block of information are less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
25. magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; This protective seam adds and was coated with one deck lubricating film, contain in the film be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), the surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation subsequently; And with perfluocarbon solvent washing whole magnetic disk surface; The CSS district applies with being selected from above-mentioned per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (VII) to (XIII) expression, so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm, the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm, and the limit static friction between head slider and disk and the kinetic friction that take place in the block of information are less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
26. magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam of whole magnetic disk add scribble be selected from following with at least a compound in the per-fluoro polyether compound of chemical formula (IV) to (XIII) expression; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), the surface of whole magnetic disk is heated to above 80 ℃ or whole magnetic disk surface or block of information ultraviolet ray irradiation subsequently; And with perfluocarbon solvent washing block of information; The block of information also be selected from above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression and contain and can apply with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm; the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm; and the limit static friction between head slider and disk and the kinetic friction that take place in the block of information are less than or equal to 1.5 and 1.0 respectively, and the limit static friction between head slider and disk and the kinetic friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
27. magnetic recording/reproducing device, this device is made up of the head slider and the disk of magnetic head, rest magnetic head, this disk has crystal seed layer, magnetosphere and the protective seam that is laminated to successively on the non-magnetic substrate, it is characterized in that, this disk has CSS district and block of information, this CSS district has the protective seam of surfaceness more than or equal to Ra 10nm, and the CSS district is positioned at the place that disk begins and place head slider when stopping operating; This block of information has the protective seam that surfaceness is less than or equal to Ra 3nm, and the block of information is positioned at the place of placing head slider when disk rotates; The protective seam of whole magnetic disk add scribble be selected from following with chemical formula (IV) to (VI) expression, contain can with at least a compound in the per-fluoro polyether compound of the functional group of protective seam chemically reactive; F (CF
2CF
2CF
2O)
n-C
2F
4-CONH-C
3H
6-Si (OC
2H
5)
3(IV) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-CONH-C
3H
6-Si (OC
2H
5)
3(V) (C
2H
5O)
3Si-C
3H
6-NHCO-(CF
2CF
2O)
m-(CF
2O)
n-CONH-C
3H
6-Si (OC
2H
5)
3(VI) (m and n are integer in the formula), the surface of whole magnetic disk is heated to above 80 ℃ or with ultraviolet ray irradiation subsequently; The surface of whole magnetic disk applies with being selected from following per-fluoro polyether compound per-fluoro polyether compound and that contain adsorbability functional group with chemical formula (VII) to (XIII) expression; C
6H
5-O-C
6H
4-H
3N
+-OCO-(CF
2CF
2O)
m-(CF
2O)
n-COO-
+NH
3-C
6H
4-O-C
6H
5(VII) F (CF
2CF
2CF
2-O)
n-C
2F
4-CH
2OH (VIII) HO-CH
2-(CF
2CF
2O)
m-(CF
2O)
n-CH
2OH (IX) HO-(CH
2CH
2-O)
p-CH
2CF
2-(CF
2CF
2O)
m-(CF
2O)
n-OCF
2CH
2(O-CH
2CH
2)
q-OH (X) F (CF
2CF
2CF
2O)
n-C
2F
4-COO-
+NH
3-C
6H
4-O-C
6H
5(XI) F (CF (CF
3)-CF
2O)
n-CF (CF
3)-COO-
+NH
3-C
6H
4-O-C
6H
5(XII)
(m, n, p and q are integer in the formula), and with perfluocarbon solvent washing block of information; The block of information be selected from above-mentioned per-fluoro polyether compound with chemical formula (IV) to (VI) expression and contain and can apply with the per-fluoro polyether compound of the functional group of diaphragm surface chemically reactive; so that the thickness of the lubricating film that forms in the CSS district is more than or equal to 1.5nm; the thickness of the lubricating film that forms in the block of information is more than or equal to 1nm; and the limit static friction between head slider and disk and the kinetic friction that take place in the block of information are less than or equal to 1.5 and 1.0 respectively, and the limit stiction between head slider and disk and the kinetic force of friction that take place in the CSS district are less than or equal to 1.0 and 0.5 respectively.
28. the defined disk of claim 1, its diameter is for being less than or equal to 88.9mm.
29. the defined disk of claim 7, its diameter is for being less than or equal to 88.9mm.
30. the defined disk of claim 11, its diameter is for being less than or equal to 88.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95197999 CN1205098A (en) | 1995-10-18 | 1995-10-18 | Magnetic disk and magnetic recording/reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95197999 CN1205098A (en) | 1995-10-18 | 1995-10-18 | Magnetic disk and magnetic recording/reproducing apparatus |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021406391A Division CN1492399A (en) | 1995-10-18 | 1995-10-18 | Magnetic disk and magnetic recording/reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1205098A true CN1205098A (en) | 1999-01-13 |
Family
ID=5083488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95197999 Pending CN1205098A (en) | 1995-10-18 | 1995-10-18 | Magnetic disk and magnetic recording/reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1205098A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1894186B (en) * | 2003-12-18 | 2010-09-29 | 3M创新有限公司 | Azeotrope-like compositions and their use |
| CN1997691B (en) * | 2003-09-23 | 2011-07-20 | 北卡罗来纳大学查珀尔希尔分校 | Photocurable perfluoropolyethers for use as novel materials in microfluidic devices |
| CN101079270B (en) * | 2006-05-24 | 2012-11-07 | Tdk株式会社 | Lubricating film forming method, slipping body with the lubricating film, magnetic recording medium, magnetic head slider and hard disk drive |
-
1995
- 1995-10-18 CN CN 95197999 patent/CN1205098A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1997691B (en) * | 2003-09-23 | 2011-07-20 | 北卡罗来纳大学查珀尔希尔分校 | Photocurable perfluoropolyethers for use as novel materials in microfluidic devices |
| CN1894186B (en) * | 2003-12-18 | 2010-09-29 | 3M创新有限公司 | Azeotrope-like compositions and their use |
| CN101079270B (en) * | 2006-05-24 | 2012-11-07 | Tdk株式会社 | Lubricating film forming method, slipping body with the lubricating film, magnetic recording medium, magnetic head slider and hard disk drive |
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