JPS6047233A - Method and apparatus of contact magnetic transfer - Google Patents

Abstract

PURPOSE:To decrease the magnification of a coercive force of a master sheet to a coercive force of a slave sheet less than a conventional case by opposing a vertical magnetization film of transfer master and a vertical magnetization film of the slave sheet face by face, pressing both films into contact and forming a closed magnetic path between both films. CONSTITUTION:Since the 1st and 2nd high permeability magnetic films 62, 72 are formed at the under layer of the 1st and 2nd vertical magnetizing films 61, 71, the magnetic resistance of the films is almost negligible. As a result, the magnetized loop forms an ideal closed magnetic path comprising 2nd signal magnetization 611, 2nd transfer magnetization 711, 3rd transfer magnetization 712 and 3rd signal magnetization 612 to make a cycle in this order between a magnetic drum 5 and the slave sheet 7. Thus, the transfer disturbance due to anti-magnetic field from an adjacent track is eliminated, the reduction in the residual magnetization of the magnetic drum 5 is less and almost negligible. Thus, the permissible number of times of magnetic transfer from one master is increased.

Description

[Detailed Description of the Invention] (Field of Application) The present invention relates to a magnetic transfer method and its operation, and it is possible to easily obtain a single copy of a magnetic transfer sheet in a multi-layered manner. This article relates to a contact a-transfer method and apparatus suitable for this purpose.

(back f:L) Below, a conventional example fc will be explained with reference to the drawings.

FIG. 1 is a schematic diagram of a magnetic transfer apparatus using a conventional contact magnetic transfer method, and FIG. 2 is a diagram of the principle of FIG. 1. In these figures, 1 is the mask tape, 2 is the slave tape, and 3 is the mask tape.
is a bias magnetic field generator.

m 1 @K A special mask tape 1 with a high coercive force is used as a mother tape, and a slave tape 2 of a medium with a lower coercive force than the coil is rolled so as to be in close contact with the mask tape 1. The recording signal of the mask tape 1 is transferred to the slave tape 2 by applying a bias magnetic field generator 3 to the bias magnetic field generator 3.

Such magnetic transfer is generally applied to transfer in-plane recording signals, as shown in FIG.

2 in FIG. 2, 110 is the magnetic layer of the mask tape 1;
11 indicates the magnetization of the recording signal, 2 0 indicates the magnetic layer of the slave tape 2, and 211 indicates the transferred magnetization.

A-mouth base fillet, la and first magnet 4i11L'T
1x.

6? from the mask tape 1 formed by ζ, the second Eth film 1 2a, and the second magnetic film 210. The resulting slave tape 2 has the above-mentioned conditions of 7<1. The magnetic films 110 and 21.0 of i2 are arranged facing each other so as to be in contact with each other.

When bias magnetization is applied in this state, the first signal magnetization 111 recorded in the first magnetic film 110 is transferred to the second magnetism +11X210 as a first transferred magnetization 211.

As mentioned above, 1 This is an in-plane recording, so the cape contact n
When the z section is subjected to a demagnetizing field of 9 orders of magnitude and a bias magnetic field during transfer, the rA%T magnetization decreases. In this case, master tape 11-j varnish tape 2
02.5 to 3 times the coercive force is required.

Therefore, for example, if an alloy film with a coercive force (l e) of 10,000 e is used as the magnetic material of the slave tape, the mask tape 1 will need a coercive force of 30,000 e.
There are only a limited number of materials that satisfy this requirement, which has the drawback of severely restricting their use.

The above-mentioned disadvantages are not limited to magnetic tapes, but also apply to contact magnetic transfer devices such as magnetic sheets.

(Purpose) The present invention has been made to solve the above-mentioned drawbacks.The purpose of the present invention is to minimize the decrease in residual magnetization of the mask no. during transfer using the contact magnetic transfer method, and to reduce the coercive force of the Nureve sheet. It is an object of the present invention to provide a contact magnetic transfer method and an apparatus thereof, which can reduce the magnification of the coercive force of a mask sheet compared to the conventional method.

(Overview) In order to achieve the 14th objective in 1iii. 7. (Example) The following is a first example f of the present invention. : This will be explained with reference to FIGS. 3 and 4.

'! :331Z+/f:, First implementation of the inventionff1l
The schematic diagram of Al1°C in FIG. 1 is the diagram of W in FIG. 3.

In Fig. 3, 5 is a magnetic tram, 7 is a Nurehabha-1 for (I), and 8 is a magnetic tram that can move perpendicularly to the plane of the paper and also move in the direction of misprinting.
Then, a signal is recorded on the magnetic material on the face of the magnetic drum 5 before the slave seas 1 and 7 are wound.

In addition, if you do not use the slave sheet 7 and simply use the number setting for the playback month, the pressure roll 8 may also be used as the playback head, or a separate playback head may be provided. In order to transfer the signal of the magnetic material of the magnetic drum 5 to the slaves 7-1 and 7, it plays the role of improving contact.

In FIG. 4, the magnetic material on the surface of the magnetic drum 50 has two layers of 1 h.
The first (9) perpendicular magnetization film 61 and the first high permeability magnetic film 46...2 are made of the same magnetic material as the magnetic column 5. It has a two-layer structure of a second perpendicular magnetization yf% 71 and a second high permeability magnetic film 72. Also, 73 is a base film.

The perpendicular magnetization film 61 of the m-th column 1 formed in the orchard of the magnetic tram 5 and the second perpendicular magnetization film 71 formed thereon are arranged on the fiber drum 5 so that they face each other. The slave sheet 7 is wound around.

The perpendicular magnetization film 61 of the magnetic drum 5 is made of CoCr.

The coercive force (l(c)σ) of CoV, CoP, etc. is increased by one step to the alloy Il, and
(iSe((IUe71 contains TbFc, DyFe,
GdFe, GdCo, FeCe.

Amorphous magnetic materials with low heating temperatures such as CrTe or commonly used r FQ, Os + Fe3O4, C
A magnetic material such as rO2 is used.

Transferring of the Present Invention> 411J Full explanation: When the slave sheet 7 is heated to around the Curie temperature of the second perpendicular GH magnetization film 1, the 2θ) perpendicular magnetization film 71 does not undergo agglomeration. , the magnetic field becomes a state with less residual magnetization.

At this time, the magnetic tram 5σ) clothing σ) magnetic 11 (vs. the slave sea) 71cl) E F, 20-
When the first perpendicular magnetization film 61 of the slave seat 1 and 7 is pressed by the slave seat 9, the second signal written on the first perpendicular magnetization film 61 of the slave seat 1 and the slave seat 7 is The second signal magnetization 611 shown in FIG.

On the other hand, in the first perpendicular magnetization film 61, a third signal magnetized in the opposite direction is hidden from the previous 6G second signal magnetization 6]1 and 44.
Due to No. 8 magnetization 612, third transferred magnetization 712 is transferred to the second perpendicular magnetization film 71 of the slave sheet 7 in the same direction as the third signal magnetization 612.

Said 1st. The second vertical commercialization film 61.71 has a first layer below it. Since the second high permeability magnetic film 62, 72 is formed, the magnetic resistance here can be almost ignored. As a result, between the magnetic tram 5 and the slave sort 7, the magnetization loop is the second signal magnetization 611 → the second transfer magnetization 711 →
3rd transfer magnetization 712・→3rd, ] signal magnetization 612→ρ
An ideal closed magnetic path of S2 (rt magnetization 611) is formed.

Therefore, the transfer is not disturbed by the demagnetizing field from the adjacent track, unlike conventional σ) in-plane recording, and the residual magnetization of the magnetic drum 5 decreases little, so that it is almost ignored.
I did more than I could. For this reason, the number of strokes that can be directly transferred from one mask to another has increased.

Also, regarding the transferred magnetization of the slave f'll, since the magnetic material of the master f'll is a perpendicular magnetization film, this
- The emitted magnetic field distribution is steep, and the magnetic material of the slave f1 is also a perpendicularly magnetized film, so the magnetic field of the mask example hardly spreads during transfer and is absorbed by the slave side.

Therefore, according to: 1-θ) As seen in the internal description 9
11 The extent to which the spread of magnetization due to the thickness of the body is ignored is so small that it becomes 19. Since a recording signal with such a small spread has little peak shift, it is most suitable for recording digital signals.

v soil j? In the above, we described a lifting platform that uses heat as an auxiliary plate generator, but it is also possible to implement a conventional method of applying a bias magnetic field without using heat.

In this jJ4 case, the magnetic drum 5 and the slave seat 7 form a closed magnetic path, and the shape of the demagnetizing field from the disconnection track becomes negligibly small. S1. --In the case of the magnetic sheet, the magnification of the coercive force of Maskon-1 relative to the force used to be 2, 5, or 3 times, but now optical transfer can be performed at a ratio of 15 to 2 times. Oru.

This expands the selection range of the magnetic material in the mask and
Cr, CoP, CoN1P, FeCof'
Alloy films such as Jt and C6Ni are now being used more and more. .

When applying a bias magnetic field in the above contact magnetic transfer method, i'j<1. '5%2 high magnetic permeability, film 62°72 is the first with recording dipping. Second perpendicular magnetization film 61.
It becomes 71 7-rd. Therefore, in order for the bias magnetic field to work effectively, the second high permeability bomagnetic film 62.
72 must be saturated, and in particular, the second high permeability magnetic film 72 on the slave side must have a thin film thickness to saturate in the bias magnetic field.

FIG. 5 is a principle diagram of a second embodiment of the present invention in which a heating element is provided inside the air drum 5. In FIG. 5, the same reference numerals as in FIG. 4 indicate the same or the same tube parts 3, 61 is a drum, and 11 is a heating body provided in the inner part of the perpendicularly magnetized film 62. Also, lO is its i corner/fl
It is.

The heating element 11 may be made of nichrome F, +6, but in order to warm the slave seats 1 and 7, the closer the heating element 11 is to the surface of the magnetic drum 50, the better the response and thermal efficiency will be. For this reason, it is desirable to use a planar heating element as the heating element 11.

Examples of planar heating elements include those made of W, Mo bamboo with a thickness of 11, thermally sprayed with B aTi 03 thermisk, and those made with graphite etc. can be used.

The advantage of this embodiment is that the second perpendicular magnetization of the slave frame -1.7 can be directly heated with 71 gold.
Therefore, it is possible to transfer the base film 73 of the slave saw 17 without thermally deforming it.

Although the heating element 11 is provided on the mask example in FIG. 5, it may be provided on the slave side. In this case, the heating body may be provided on or near the surface of the pressure roll 90, or the heating body may be housed inside the pressure roll 90.

FIG. 6 is a schematic diagram of a third embodiment of the invention.

In FIG. 6, the same symbol →3 as in FIG. 3 indicates the same or equivalent part.

FIG. 6 shows that in the first and second embodiments of the present invention, a double-layer magnetic material composed of a high-speed SAE S1 (a vertical magnetic film 62 and a first perpendicular magnetic film 6) is attached to a magnetic drum 5. The transfer mask 65 in FIG. Since the MIM is used, the transfer master 65 can be attached to and detached from the drum 63 by means of the locking portion 12.

(ii) If the transfer master 65 is removed and the slave sheet 7 is attached, it can be used not only as a magnetic transfer device but also as a magnetic sorting type recording F1) small device. In this case, as mentioned above, the magnetic material for the mask and the magnetic material for the nureve generally have different He (coercive force)3, so when recording with the same head, the appropriate magnetomotive force is different, so the recording current value It is necessary to switch.

FIG. 7 is a block diagram showing one means for marking a monument.

In FIG. 7, the same reference numerals as in FIGS. 3 and 6 represent the same parts. In the same figure, 13
is a recording Jτ'4 range switch, 14 is a changeover switch, l5
, 15a is ;lx 1. >B2 attenuator,
16 is the input number: ftechiru.

If the transfer mask 65 is attached to the drum 63, set the changeover switch 14 to the first attenuator level 15, and if the slave sheet 7 is still attached to the drum 63, set the changeover switch 14 to the first attenuator level 15. switch 14 to second attenuator 15 a 11! 8 is a schematic diagram of a fourth embodiment of the present invention.

In FIG. 8, the same symbols as in FIGS. 3 to 7 are the same as those in FIGS.
You're so talented, you're just as talented.

Reference numeral 17 denotes a support holding a removable transfer master 65, and the receiver moves up and down as shown by the arrow with respect to the table 18, and operates in a stamp type manner. At least one of the support body 17 and the pedestal 18 has a built-in heating mechanism as required. Reference numeral 19 denotes a bias device, which may be removed if at least one of the support J7 and the pedestal 18 incorporates a heating 4X% 4-fV.

The slave sheet 7 is sandwiched between the transfer plate 77 supported by the table 18 and the support body 17, and the transfer plate 65 in a Q-shape and pressed. .

The transfer is performed by applying heat and applying a bias device, as in the first to third embodiments of the present invention described in 01. As described above, the transfer master 65 and the slave sheet 7 need to be brought into good pressure contact with each other because the signal magnetization and transfer magnetization form a closed magnetic path to perform magnetic transfer.

For this reason, it is preferable that either the transfer master 65 or the slave sheet 7 has flexibility.

^'1 it6, transfer master 65 and slave sheet 7 If the shape is square, disc: lJs
, It goes without saying that any external shape may be used.

(Effects) As is clear from the above description, according to the present invention, the following effects are achieved.

(1) Both the magnetic material of the mask sheet and the slave sheet are made of perpendicular magnetization film and high permeability magnetic 1/4 2-tone M'7 structure. Magnetic transfer can be performed with less reduction in residual magnetization on the master/destination side. In other words, a large number of copies can be made from one mask sheet.

(2) Mask sorting: Since the magnetic material of the slave sheet is made as described in item 1 above, the coercive force of the mask sheet relative to the coercive force of the slave sheet can be reduced by one tone ratio compared to the conventional method.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the conventional example, FIG. 2 is a diagram of the principle of FIG. 1, and FIG. 3 is a diagram of the first example of the present invention: 5+! Schematic diagram of the example, Figure 4 1
-1. 3 is a principle diagram, FIG. 5 is a principle diagram of the second embodiment of the present invention, FIG. 6 is a schematic diagram of the third embodiment of the present invention, and FIG. 7 is a diagram of the principle for switching the recording current. A block diagram showing the means, FIG. 8 is a schematic diagram of a fourth embodiment of the present invention. , 3... Baianu magnetic field generator, 5... Magnetic drum, 7
...Slefun-1, 8...Magnetic head, 9...
Pressure roll, 3]...bias magnetic field, 61...first
No vertical IMf (iB conversion iP'8.62 ・-[51(
') INl 3 O1 rate (W property 1143.63...
Tonomu, 65...Transfer mask, 71, part 2 fm
tff J saponification fir's, 72..., HS2 high magnetic permeability film, 73... Hesnoirno 1.6
11...ε[)2su No. 16 (Hakai, 612...Third Buddha → Zu magnetization, '711...2Hs 2σ door] Mu photomagnetization, 712...ii 3 transfer magnetization agent 1'1 Figure'3 Figure 2 11 Up 3!''1 Figure 4 Figure 5 Figure 61.4

Claims (7)

[Claims] (1) Information recorded on a transfer mask having a two-layer structure of a perpendicular magnetization IL'% and a high magnetic permeability magnetic film is transferred to a slave sheet having a two-layer structure of a perpendicular magnetization film and a high-speed 'jA rate magnetic +1 negative A method of contact magnetic transfer to a transfer mask, which is characterized by arranging a perpendicularly magnetized film of a transfer mask and a perpendicularly magnetized film of a slave sheet to face each other, and pressing them together to form a closed magnetic path between them. Contact magnetic transfer method 1, (2) A patented method characterized in that a bias magnetic field is applied to the perpendicular magnetization film of the transfer mask and the slave sheet. (3) The contact magnetic transfer method according to claim 1 or 2, characterized in that the perpendicularly magnetized film of the two-rap sheet is heated. (4) A magnetic drum having a transfer mask on the surface of which a high permeability magnetic film and a perpendicular magnetization film are layered in that order, and a perpendicular magnetization film marked R11, are arranged opposite to each other, and between them, A contact magnetism characterized by comprising: a pair of slave sheet scissors having two layers of a perpendicular value film and a high permeability magnetic layer; and a pressure roll that presses the slave sheet against the transfer mask. Transfer device, (5) The contact magnetic transfer device according to claim 4, wherein the transfer mask has an attachment/detachment port for the nIJ 41 drum. (6) The contact magnetic transfer device according to claim 6'f, item 4, wherein the transfer mask is integrally fixed to the magnetic drum. (7) A magnetic drum having a transfer mask on its surface, in which a high permeability magnetic film and a perpendicular magnetization film are laminated in that order, is arranged opposite to the perpendicular magnetization film, and between them,
A pressure roll that presses a slave seat 1 having a two-layer R/V structure with perpendicular magnetization traces and high magnetic permeability 14J, and presses a 1iff mark slave root to the transfer master;
Scraping magnetic rotation Jf,*s: Jiff, characterized in that it is equipped with an f-stage for total heating.