JPH0880695A - Three-dimensional image recording apparatus - Google Patents

Abstract

PURPOSE: To provide a three-dimensional image recording apparatus capable of forming a three-dimensional image capable of being confirmed by a person having no knowledge of braille or a visually handicapped person and capable of being rewritten repeatedly. CONSTITUTION: A recording medium 1 is constituted of a recording layer 2 composed of an alloy or a resin showing shape memory, characteristics, an elastic layer 3 composed of a foamed urethane resin, and a base layer 4. The recording layer 2 is composed of a material showing shape memory characteristics and has an uneven surface in an initial state but is deformed by external force and restored to the original shape by heating to be capable of repeatedly forming and erasing a three-dimensional image.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image recording apparatus capable of repeatedly extinguishing / generating a stereoscopic image which can be visually recognized even by visually impaired persons.

[0002]

2. Description of the Related Art In the conventional hard copy recording, an image is formed on a recording medium such as paper from the outside with a visual material such as ink or toner, or like thermal recording paper.
A permanent image is recorded by providing a recording layer on a base material such as paper and forming a visible image on the recording layer.

However, with the construction of various network networks, the widespread use of facsimiles, copying machines, etc., the rapid increase in the consumption of these recording materials causes problems of natural destruction such as deforestation and social problems such as garbage disposal. . Therefore, in order to deal with these problems, there is a strong demand for reduction of the recording material consumption such as reproduction of recording paper. A recording material and a rewriting method capable of repeating recording and erasing have been developed to solve this problem. For example, Japanese Patent Laid-Open No. 55-154198, Jikkaihei
Various proposals have been made in 2-19568, JP-A-4-197647, JP-A-5-4447 and others.

However, each of these proposals
It is intended for visual image recording and does not take the visually impaired into consideration. Conventionally, voice conversion and Braille have been used as means for transmitting information to the visually impaired. At present, voice conversion is introduced only in a small part because the device becomes expensive, and Braille is specially encoded, so it can be discriminated by people who do not have knowledge of the code. There was a problem that I could not.

For such Braille, there is a proposal of repeatedly using a shape memory resin for paper and reusing it.
No. Further, Japanese Patent Laid-Open No. 4-33859 has proposed that a shape memory alloy is used for the embossed portion of an IC card or the like so that it can be restored even if the embossed portion is deformed by some external force. These proposals are based on the limitation of the shape range in which the material exhibiting the shape memory property can be deformed, and are limited to the formation of relatively large protrusions.

On the other hand, a recording medium in which a visible image can be rewritten by forming / smoothing fine irregularities such that light is diffusely reflected and appears white by using a shape memory resin is also proposed in Japanese Patent Laid-Open No. 4-16441. . In this case, since the unevenness is extremely small, it is possible to visually confirm the image, but it is impossible for visually impaired persons to confirm it by tactile sense like Braille.

[0007]

As described above, the conventional technique for recording / erasing a visible image has a problem that the visually impaired person cannot recognize it, and the conventional visually impaired person such as Braille. There was a problem with the information transmission means for the general public that it could not be recognized.

The present invention has been made in consideration of such a conventional situation, and a stereoscopic image capable of recognizing a person having no knowledge of Braille and a visually impaired person and capable of rewriting repeatedly. It is an object of the present invention to provide a stereoscopic image recording device capable of forming a three-dimensional image.

[0009]

According to a first aspect of the present invention, there is provided a recording section provided with a shape memory material having a memory shape, the surface of which has a large number of minute irregularities at a predetermined temperature. A stereoscopic image recording apparatus for repeatedly extinguishing / generating a stereoscopic image on a recording medium having: an erasing unit for pressurizing the recording medium to plastically deform the shape memory material to smooth the recording unit; The recording portion smoothed by the erasing means is partially and selectively heated to a temperature equal to or higher than the predetermined temperature according to image information, and the portion corresponding to the heated portion of the recording portion is not plastically deformed by the erasing means. And a recording unit that restores the shape to form a stereoscopic image.

According to a second aspect of the present invention, at a predetermined temperature, a stereoscopic image is repeatedly erased / erased on a recording medium having a recording section in which a shape memory material whose surface has a smooth shape is provided as a memory shape. A three-dimensional image recording device for generating, an erasing means for heating the recording medium to a temperature equal to or higher than the predetermined temperature to restore the plastically deformed portion formed in the recording portion to a smooth shape, and smoothing by the erasing means. Recording means for forming a three-dimensional image by forming a concave shape by plastically deforming a portion of the recording portion that corresponds to the pressed portion of the recording portion, according to image information. A stereoscopic image recording device comprising:

According to a third aspect of the present invention, the recording medium includes an elastic layer that is deformable in response to a change in shape under the recording portion made of the shape memory material. 2. The stereoscopic image recording device described in 2.

[0012]

In the three-dimensional image recording apparatus of the present invention, it is possible to clearly form and erase a three-dimensionally raised or depressed character and the like, and it is possible to visually or tactually confirm the image and to record the recording medium. Can be reused repeatedly.

Further, by providing an elastic layer which can be deformed according to the shape change in the lower layer of the shape memory material such as the shape memory alloy or the shape memory resin, a large shape change can be obtained.

[0014]

The details of the stereoscopic image recording apparatus of the present invention will be described below.
Examples will be described with reference to the drawings.

First, a first embodiment of the present invention will be described. FIG. 1 is a diagram showing the configuration of a recording medium 1 used in the first embodiment.

The recording medium 1 includes a recording layer 2 made of an alloy or resin exhibiting shape memory characteristics, an elastic layer 3 made of urethane foam resin or the like, and a base layer 4 made of PET (polyethylene terephthalate) or the like. Composed of and.

The recording layer 2 is made of a Ni--Ti (nickel-titanium) alloy having a thickness of 100 .mu.m as a material exhibiting a shape memory characteristic. It was formed with irregularities at about 40 pieces / mm ² . After this material is deformed by external force,
When heated to a high temperature (140 to 180 ° C.), it exhibits the characteristic that the shape before heating is restored due to martensitic transformation. Therefore, it is possible to repeatedly form / erase a three-dimensional image by applying an external force to deform and then restoring the original shape by heating.

In order to form the recording layer 2 having the projection shape as described above, the shape memory alloy film previously rolled by a rolling roller to a thickness of about 100 μm is heated to 180 ° C. or higher and the corresponding projection shape is obtained. Press-mold with the mold of
Obtained by slow cooling. The recording medium 1 is obtained by forming the elastic layer 3 (500 μm) on the recording layer 2 after molding and adhering it to the base layer 4. When such a recording medium 1 is repeatedly changed in shape, the elastic layer 3 provided under the recording layer 2 absorbs the change in shape, so that a larger deformation is possible.

Further, for the recording layer 2, a Cu--Zn (copper-zinc) alloy or the like can be similarly used as a material exhibiting similar characteristics. Furthermore, there is a polyurethane resin as a material exhibiting shape memory characteristics, and specific examples thereof include MS-5500 manufactured by Mitsubishi Heavy Industries, and Samprene manufactured by Sanyo Kasei. These polyurethane-based shape memory resins have the characteristic that when heated to a glass transition temperature or higher (90 to 130 ° C.), they return to the shape before heating, and they can be formed into a film. It can be used for layer 2. When a polyurethane resin is used, the thickness is preferably 200 μm or more for reasons such as durability.

FIG. 2 shows the structure of a recording device for rewriting three-dimensional characters using the recording medium 1. In the figure, reference numeral 5 denotes a pressure roller made of stainless steel, which corresponds to erasing means for three-dimensional characters. The pressure roller 5 sandwiches and pressurizes the recording medium 1 together with the backup roller 6 made of urethane rubber, which is arranged to face it, and conveys the recording medium 1 while smoothing the uneven surface uniformly.

Further, in the figure, reference numeral 7 is a pressure roller pressing portion for pressing / releasing the pressure roller 5 in the direction of arrow A as required, and electrically pressurizing the roller by using a solenoid and a spring (not shown) together. It is a mechanism for moving 5 up and down. The pressure roller pressing unit 7 releases the pressure roller 5 when it is not necessary.

Further, in the figure, reference numeral 8 is a thermal head used in a thermal transfer printer for OA or the like, which corresponds to a recording means for three-dimensional characters. The thermal head 8 is a platen roller 9 made of urethane rubber, which is arranged to face each other.
At the same time, the recording medium 1 smoothed by the pressure roller 5 is sandwiched, and while being conveyed, heat is partially applied on a pixel-by-pixel basis in accordance with image information to partially restore the uneven shape.

Further, in the figure, 10 is a position detecting sensor, which detects the insertion of the recording medium 1 and produces a reference signal for adjusting the timing of the whole operation.

With the above construction, even if some three-dimensional characters are already formed on the recording medium 1 to be inserted by the uneven shape, the entire surface is uniformly smoothed (erased) by the pressure roller 5. Thus, by partially restoring (recording) the uneven shape with the thermal head 8, it is possible to rewrite a three-dimensional character in one pass.

Next, the smoothing (erasing) operation and the restoring (recording) operation of the recording apparatus will be described in detail with reference to FIGS.

FIG. 3 shows a state in which the recording medium 1 having an uneven shape is smoothed (erased) by the pressure roller 5. When the recording medium 1 having an uneven shape is sandwiched between the pressure roller 5 and the backup roller 6, a force is applied so that the uneven shape is crushed by pressure.

At this time, since the volume of the recording layer 2 does not change due to the pressurization, when the recording layer 2 is supported by a rigid body, the recording medium 1 is deformed together with the base layer 4 by the applied pressure. Although the recording layer 2 is deformed or broken beyond the recoverable range and cannot be used repeatedly, the elastic layer 3 is provided below the recording layer 2 in this embodiment. Therefore, the cushioning effect of the elastic layer 3 can absorb the deformation due to the pressure. As a result, smoothing processing (erasing) can be performed without causing irreversible deformation or breakage.

As shown in FIG. 3, perfect smoothness is not obtained by pressing, and the surface condition after pressing becomes smaller and has less difference in height. However, since the height difference in this state is suppressed to about 10 μm, there is no problem in practical use.

FIG. 4 shows a state in which the recording medium 1 smoothed (erased) by the pressure roller 5 is partially heated by the thermal head 8 and the uneven shape is partially restored (recorded). It is a thing.

Since the initial shape of the recording medium 1 is such that the entire surface has irregularities, it is possible to partially form the protrusions by applying heat that can be restored to an arbitrary portion. Here, when partial heating is performed by the thermal head 8, the heated portion of the recording layer 2 tries to restore to the projection shape which is the initial state, but there is a time delay in the occurrence of this restoration change. Actually, the projection shape is restored after passing through the thermal head 8. Therefore, the restored projection shape does not cause the thermal head 8 to be lifted and come into contact with the recording layer 2. As a result, as shown in the figure, by heating the thermal head 8 in units of pixels, the thermal head 8 is heated by a size corresponding to the heating resistor 11, so that a partial uneven shape can be restored.

Next, the actual rewriting of three-dimensional characters will be described with reference to FIG. FIG. 5 shows the recording medium 1 before and after rewriting the three-dimensional character A of the alphabet into B. Here, at the time of rewriting, the conveyance speed of the recording medium 1 is 10 mm / s, and the pressure of the pressure roller 5 is a linear pressure of 500 g.
/ Mm and a recording energy of 0.8 mJ / dot by using a thermal head 8 having a resolution of 6 dot / mm,
I was able to rewrite three-dimensional characters uniformly.

Further, when a shape memory resin is used for the recording layer 2, the sensitivity changes to some extent, so that rewriting can be similarly performed by setting the recording energy of the thermal head 1 to 0.7 mJ / dot. . Since the three-dimensional characters formed on the recording medium 1 have an uneven shape in the initial state,
As shown in the figure, it becomes an aggregate of protrusions. Here, since the recording layer 2 of the recording medium 1 only changes its shape and does not change its color, it always has an uneven shadow,
It is possible to clearly recognize the characters visually. Further, when the three-dimensional character was discriminated by the tactile sensation of the fingertip, the shape could be easily recognized.

Although the pressure roller 5 made of stainless steel is used as the pressure member in this embodiment, the material is not particularly limited to this, and acrylic resin or the like may be used. Further, if the pressure applied to the thermal head 8 is adjusted without using the pressure roller 5, the thermal head 8 can be made to function as both a pressure unit and a heating unit. In this case, the same rewriting operation can be realized by the thermal head 8 alone without providing an independent pressurizing unit, and the device configuration can be simplified.

Next, the flow of operation when rewriting a three-dimensional character by the recording device described above and the circuit configuration for realizing the rewriting operation will be described with reference to FIGS. FIG. 6 shows a circuit configuration for realizing the rewriting operation. Further, FIG. 7 shows a flowchart when the rewriting operation is performed.

As shown in FIG. 7, when the insertion of the recording medium 1 is detected by the position detecting sensor 10 (101), FIG.
The driving of the carry motor 12 shown in (1) is started (102), and the recording medium 1 is carried.

When rewriting (103), the released pressure roller 5 is set to a pressure state (104),
After erasing (pressurizing) the existing image on the recording medium 1 (105),
The pressure roller 5 is released (106).

Then, a new image is recorded (heated) by the thermal head 8 (107), and the recording medium is ejected (1
08).

By the above operation, the recording medium 1 is discharged after the existing image is erased and rewritten with a new image.

In order to realize such an operation, as shown in FIG. 6, the circuit is constructed by the CPU 13 so as to integrally manage the whole operation. Each operation described in FIG. 7 is a CPU
13, the setting data such as the conveying speed, the pressure roller pressing timing, and the recorded image data are stored in advance in R.
It is stored in the OM 14 and is called to the RAM 15 as necessary to set each operation.

First, after the power is turned on, each information in the ROM 14 is called into the RAM 15. When the insertion of the recording medium 1 into the apparatus is detected by the position detection sensor 10, a signal is sent to the CPU 13, and the CPU 13 issues a conveyance start command to the conveyance motor drive circuit 16 based on the conveyance speed information in the RAM 15. Therefore, the carry motor 12 starts moving at a preset speed and carries the recording medium 1 at a predetermined speed.

When rewriting, the timing from the detection of the position detection sensor 10 is counted based on the timing information in the RAM 15, and the pressure roller pressing drive circuit 17 is used.
Issue an operation command to. As a result, the pressure roller pressing unit 7 operates at the timing when the conveyed recording medium 1 arrives, and the existing image on the recording medium 1 is erased by the pressure roller 5.

Next, in order to perform recording by the thermal head 8, the timing from the detection by the position detection sensor 10 is counted, and the CPU 13 causes the thermal head drive circuit 1 to count.
In the thermal head drive circuit 18, which issues an operation command to the RAM 8, the RAM 1
The thermal head 8 is driven to generate heat based on the thermal head recording speed information (recording cycle, energizing time, etc.) in 5 and the image data of the ROM 14. As a result, the pressure roller 5 heats the recording medium 1 from which the existing image has already been erased according to the image data, and a new image is recorded. Then, the recording medium 1 in which the existing image is rewritten with the new image is ejected, and the entire operation ends.

As described above, rewriting of three-dimensional characters using the recording medium 1 can be realized by the circuit configurations and the flowcharts shown in FIGS.

Next, a second embodiment of the present invention will be described. FIG. 8 shows the structure of the recording medium 20 used in the second embodiment.

The composition of the material used for the recording medium 20 is the first
The recording medium 1 is exactly the same as that of the recording medium 1 used in the above example, and includes a recording layer 21, an elastic layer 3, and a base layer 4. Here, the difference from the recording medium 1 used in the first embodiment is that the recording layer 2
1 is a smooth shape in the initial state. Therefore, in the present embodiment, it is not necessary to form a complicated concavo-convex shape when the recording medium 20 is molded, so that the manufacturing can be performed more easily. That is, after being rolled at a temperature of 180 ° C. or higher, it is gradually cooled to a predetermined thickness (100 μm).
It is only necessary to form a film in m). By applying the partial pressure corresponding to the pixel to the recording medium 20 having such a configuration,
An arbitrary concave shape is formed. Also, heat is applied to the entire surface of the recording medium 20 to restore its shape, thereby restoring the initial state to the smooth state.

FIG. 9 is a diagram showing the structure of a recording device for rewriting three-dimensional characters using the recording medium 20.

In the figure, 22 is a heat roller, which corresponds to a means for erasing three-dimensional characters. The temperature of the heat roller 22 is detected by the thermistor 23 and temperature control is performed by feedback. Furthermore, a backup roller 24 made of silicon rubber and arranged to face each other.
The recording medium 20 is sandwiched together with the recording medium 20 and conveyed while being heated.
The partial dent shape is uniformly smoothed over the entire surface.

Further, in the figure, reference numeral 25 is a wire dot head used in a wire dot printer for OA and corresponds to a recording means for three-dimensional characters. The wire dot head 25 sandwiches the recording medium 20 smoothed by the heat roller 22 together with the platen roller 9 made of urethane rubber which is arranged to face the wire dot head 25, and while transporting the recording medium 20, a wire (pin) is partially formed in pixel units according to image information. ) Is applied to form a dent shape. Other configurations are
Similar to the first embodiment, the rewriting of a three-dimensional character is realized in one pass using the recording medium 20.

Next, the smoothing (erasing) operation and the dent shape forming (recording) operation of the recording apparatus will be described in detail with reference to FIGS.

FIG. 10 shows a recording medium 20 having a dent shape.
Shows that the heat roller 22 smoothes (erases) the image. As shown in the figure, when the dented recording medium 20 is sandwiched between the heat roller 22 and the backup roller 24, the dented shape is restored to the initial smooth state by heating.

FIG. 11 shows how the recording medium 20 smoothed (digested) by the heat roller 22 is partially hit and pressed by the wire dot head 25 with the pin 26 to form a dent shape. It is shown. As shown in the figure, when the wire dot head 25 strikes in pixel units, it is pressed with a size corresponding to the pin 26, so that it is possible to form a partial dent shape with an arbitrary image pattern. become. Here, similarly to the first embodiment, since the elastic layer 3 is provided below the recording layer 21, the cushion effect of the elastic layer 3 can absorb the deformation due to the pressurization and the irreversible deformation. And breakage can be prevented.

Next, the actual rewriting of three-dimensional characters will be described with reference to FIG. FIG. 12 shows the recording medium 20 before and after rewriting the three-dimensional character A of the alphabet into B.

Here, at the time of rewriting, the conveyance speed of the recording medium 20 is set to 10 mm / s, which is the same as in the first embodiment, and the control temperature of the heat roller 22 is 160 ° C. and 24 pins (4 mm).
By using the wire dot head 25 of (width), it was possible to rewrite three-dimensional characters uniformly. In addition, when a shape memory resin is used for the recording layer 2, the sensitivity changes to some extent.
Rewriting could be performed similarly by setting the control temperature of the heat roller 22 to 110 ° C.

Since the three-dimensional characters formed on the recording medium 20 are formed by a group of partial dents formed by the wire dot heads 25, the character parts are totally depressed as shown in FIG. . Here, the recording layer 21
When the depth of the dent shape formed on the surface was measured, it was about 80 μm on average. Furthermore, it was confirmed that, in the present example, similarly to the first example, it was possible to visually and tactually recognize.

Next, the flow of operation when rewriting a three-dimensional character and the circuit configuration for realizing the rewriting operation in the second embodiment will be described with reference to FIGS. FIG.
3 is a block diagram showing a circuit configuration for realizing the rewriting operation, and FIG. 14 is a flowchart showing the rewriting operation.

In FIG. 14, the point basically different from the first embodiment is that the heat roller 22 is used, so that the carry motor 12 is driven in advance and the heat roller 22 is controlled to the designated temperature. This is the point where it is determined whether or not. This is because it is necessary to rotate the heat roller 22 by moving the carry motor 12 to suppress the temperature unevenness, and to feed back whether the temperature is controlled to be constant.

Therefore, as shown in FIG. 14, it is determined whether or not the heat roller 22 has been heated to the designated temperature, and if it is not heated to the designated temperature, the next operation is not proceeded. When rewriting is performed after the recording medium 20 is detected, it is conveyed as it is, the existing image is erased (heated) by the heat roller 22, and a new image (pressurization) is recorded and discharged by the wire dot head 25. .

In order to realize such an operation, the circuit is configured by the CPU 13 so as to integrally manage the whole operation as shown in FIG. Similar to the first embodiment, the CPU 13 manages the entire operation. That is, setting data such as the conveyance speed, the heat roller control temperature, and the recorded image data are stored in the ROM 14 in advance, and are called to the RAM 15 as necessary to set each operation.

First, after the power is turned on, each information in the ROM 14 is called into the RAM 15. Further, the CPU 13 issues an operation command to the transport roller drive circuit 16 and (2
01), and issues a heating start command to the heat roller temperature control circuit 27 (202).

In the heat roller temperature control circuit 27, RA
Temperature control is performed based on the designated temperature data in M15.
Here, when temperature control is performed by the heat roller temperature control circuit 27, a closed loop circuit based on the output of the thermistor 23 is configured to perform feedback control (2
03). Further, by the heat roller temperature control circuit 27,
Until it is heated to the designated temperature, the CPU 13 monitors the insertion of the recording medium 20 so as not to be accepted, and measures such as closing an insertion port (not shown) are taken (204).

When the insertion of the recording medium 20 into the apparatus is detected by the position detection sensor 10 while the heating roller 22 is being heated normally, a signal is sent to the CPU 13 and the transport motor 12 that is already operating. By recording medium 2
0 is conveyed (205). When rewriting (20
6) Then, the conveyance is continued as it is, and the heat roller 22 erases the existing image by heating (207).

Next, in order to perform recording by the wire dot head 25, the timing from the detection by the position detection sensor 10 is counted and the CPU 13 issues an operation command to the wire dot head drive circuit 28. The wire dot head drive circuit 28 drives the wire dot head 25 under pressure based on the image recording speed information (pin hitting cycle, etc.) in the RAM 15 and the image data in the ROM 14 in accordance with the arrival of the recording medium 20 being conveyed. (208).

As described above, a new image is recorded on the recording medium 20 from which the existing image has been erased by the heat roller 22 by applying pressure according to the image data. Then, the recording medium 20 in which the existing image is rewritten with the new image is ejected, and the entire operation ends (209).

As described above, rewriting of three-dimensional characters using the recording medium 20 can be realized by the circuit configuration and the flowcharts shown in FIGS.

In all of the above-mentioned examples, when the visually impaired person was made to actually discriminate the three-dimensional character by the tactile sensation of the fingertip, the shape was easily recognized with a recognition rate of 80% or more. It was confirmed that it was possible.

Further, in any of the above-mentioned embodiments, the same effect can be obtained even if the inverted character is formed by applying the energy capable of forming the image to the portion corresponding to the non-image portion.

Further, a magnetic layer is provided on the recording medium and a magnetic head is provided on the recording device to read / write magnetic information.
If the writing is performed and the three-dimensional character is rewritten based on the magnetic information, the added value can be further increased. For example, if the present invention is applied to the display of the balance of the pre-baid card, the latest accurate balance including the visually impaired person can be easily confirmed. As a result, it becomes possible to share profits in public facilities such as paying public telephones and paying railway fares, and the effect will be great.

[0068]

As described above in detail, according to the three-dimensional image recording apparatus of the present invention, a three-dimensional image is repeatedly rewritten using a recording medium using a shape memory alloy, resin or the like in the recording portion. This makes it possible to rewrite an image that can be visually and tactually recognized.

[Brief description of drawings]

FIG. 1 is a diagram showing a layer structure of a recording medium used in a first embodiment.

FIG. 2 is a diagram showing a configuration of a recording apparatus according to a first embodiment.

FIG. 3 is a diagram showing how the recording medium is smoothed in the first embodiment.

FIG. 4 is a diagram showing how the uneven shape of the recording medium is partially restored in the first embodiment.

FIG. 5 is a diagram showing a recording medium before and after rewriting three-dimensional characters in the first embodiment.

FIG. 6 is a diagram showing a circuit configuration for realizing a rewriting operation in the first embodiment.

FIG. 7 is a diagram showing a flowchart when a rewriting operation is performed in the first embodiment.

FIG. 8 is a diagram showing a layer structure of a recording medium used in a second embodiment.

FIG. 9 is a diagram showing a configuration of a recording apparatus according to a second embodiment.

FIG. 10 is a diagram showing how the recording medium is smoothed in the second embodiment.

FIG. 11 is a diagram showing how a concave shape is partially formed on a recording medium in the second embodiment.

FIG. 12 is a diagram showing a recording medium before and after rewriting a three-dimensional character in the second embodiment.

FIG. 13 is a diagram showing a circuit configuration for realizing a rewriting operation in the second embodiment.

FIG. 14 is a diagram showing a flowchart when a rewriting operation is performed in the second embodiment.

[Explanation of symbols]

 1 ... Recording medium used in the first embodiment 2 ... Recording layer of recording medium used in the first embodiment 3 ... Elastic layer 4 ... Base layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisahi Tanaka Toshiba Intelligent Technology Co., Ltd. 70 Yanagimachi, Saiwai-ku, Kawasaki-shi, Kanagawa

Claims (3)

[Claims] 1. A stereoscopic image is repeatedly erased on a recording medium having a recording section in which a shape-memory material having a surface having a large number of minute irregularities as a memory shape is arranged at a predetermined temperature. / A three-dimensional image recording device for generating, comprising: an erasing unit that pressurizes the recording medium to plastically deform the shape memory material to smooth the recording unit, and the recording unit smoothed by the erasing unit. , Partially and selectively heating to a temperature equal to or higher than the predetermined temperature according to image information to restore a portion corresponding to a heated portion of the recording portion to a shape before the plastic deformation by the erasing means to form a stereoscopic image. A stereoscopic image recording apparatus comprising: a recording unit. 2. A stereoscopic image recording in which a stereoscopic image is repeatedly disappeared / generated on a recording medium having a recording section provided with a shape memory material having a surface having a smooth shape as a memorized shape at a predetermined temperature. An apparatus, comprising: an erasing unit that heats the recording medium to a temperature equal to or higher than the predetermined temperature to restore a plastically deformed portion formed in the recording unit to a smooth shape; and the recording unit smoothed by the erasing unit. Recording means for forming a three-dimensional image by partially and selectively applying pressure in accordance with image information to plastically deform a portion corresponding to the pressed portion of the recording portion to form a concave shape. Characteristic stereoscopic image recording device. 3. The three-dimensional image according to claim 1, wherein the recording medium includes an elastic layer that is deformable in response to a change in shape, below the recording portion made of the shape memory material. Recording device.