JP2866223B2 - Rewritable record display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention relates to a rewritable record display equipment using capable of repeated recording and erasing (rewritable) rewritable film.

[0002]

2. Description of the Related Art Thermal recording apparatuses and thermal transfer recording apparatuses which record or display using a heating means such as a thermal head or a laser beam have a relatively simple structure. Widely applied to recording / display devices. For example, in a recording unit of a facsimile apparatus using thermal recording paper, when a recording signal is input, a heating element on a thermal head is selectively heated at a predetermined timing to color the thermal recording paper at a desired position. In general, an image is formed by this.

Further, in a recording apparatus for a computer or a word processor, a thermal transfer type recording apparatus that selectively heats a heating element of a thermal head to melt ink on an ink ribbon and transfer it to recording paper has been widely used. I have. However,
In the case of thermal recording and thermal transfer recording as described above, the recorded image cannot be erased, so that a desired image cannot be recorded again on the same recording paper.

Hereinafter, conventional display devices and facsimile devices will be described. FIG. 36 is a diagram showing an example of a conventional art described in “Information Display Device Using Toner Image” (Yujiro Ando, et al., P119-P122) in Workshop Fine Image Papers (The Society of Photographic Society of Japan, The Society of Electrographic Photography, SPSE Tokyo Section 1989). It is a vertical side view which shows the display apparatus of FIG.

In FIG. 1, a frame 1 serving as a main body of a display device is provided with a windshield 2 constituting a display screen. In the frame 1, sheet rollers 3, 4 are arranged vertically. A recording sheet 5 as a recording medium is provided between these sheet rollers 3 and 4.
Is wound and supported. The recording sheet 5 includes an endless belt for forming and displaying a toner image. A magnet roller 7 for forming a toner image on the recording sheet 5 is provided, and the magnet roller 7 is controlled by a controller 8. The toner 6, the magnet roller 7, and the controller 8 constitute a recording unit for forming a toner image on the recording sheet 5. Reference numeral 9 denotes a driver IC, and reference numeral 10 denotes a cleaner for scraping off the toner image on the recording sheet 5.

Next, the operation will be described. Recording sheet 5 supported and transported by upper and lower sheet rollers 3 and 4
Above, a toner image is formed by the magnet roller 7 controlled by the controller 8 during the transport process. Then, the recording sheet 5 stops facing the windshield 2 after forming the one-screen toner image, and the formed toner image is used for display. The toner image on the recording sheet 5 after the display is scraped off by the cleaner 10 with the movement of the recording sheet 5, so that the recording sheet 5 and the toner 6 are both reused.

FIG. 37 shows, for example, Mitsubishi Electric Technical Report Vol. 5
5 No. 10 1981 p. FIG. 47 is a schematic vertical sectional side view showing a conventional facsimile apparatus shown in FIG. 47 (725), in which an energizing pulse corresponding to a recording section pattern to be recorded is applied to a thermal head 11, and a thermal recording paper In step 13, a colored image is developed and recorded. The roll-shaped thermosensitive recording paper 13 is pressed against the thermal head 11 by a platen roller 14. Further, the thermal recording paper 13 is guided to the thermal head 11 by a transport guide 16a. The thermosensitive recording paper 13 on which a colored image is recorded,
It is guided to the discharge tray 1a by the transport guide 16b.
15a and 15b are guide rollers.

Next, the operation will be described. Thermal recording paper 1
3 is guided by the transport guide 16a and sent to a recording position where the thermal head 11 and the platen roller 14 face each other.
When an energizing pulse corresponding to a recording pattern to be recorded is applied to the thermal head 11, the thermal head 1
Due to the heat generation of 1, the colored image due to the coloring phenomenon is recorded on the thermosensitive recording paper 13. Then, the thermosensitive recording paper 13 on which the color image is recorded is guided by guide rollers 15a and 15b and a conveyance guide 16b, and is sent to the discharge tray 1a.

Since the conventional display device and facsimile device are configured as described above, in the display device, the configuration of the recording unit including the toner 6, the magnet roller 7, the controller 8, and the like becomes complicated. For this reason, the size of the recording section cannot be reduced, the complete recovery and reuse of the toner 6 is impossible, and the supply and maintenance of the toner 6 are required. Further, in the facsimile apparatus, the thermal recording paper 1 once recorded is used.
No. 3 cannot be used repeatedly, and an unused thermosensitive recording paper 13 is required every time recording is performed. Therefore, there is a problem that the running cost is greatly increased.

FIG. 38 shows, for example, Nikkei Electronics 19
November 16, 1987, P.M. FIG. 2 is a cross-sectional view showing the conventional facsimile apparatus shown in 210. In the figure, a control unit (not shown) for controlling the apparatus is provided on a control board 22. The document 26 is fed by a feed roller 24 for feeding paper. When a plurality of originals 26 are set, the originals 26 are separated one by one by the separation pieces 25.
The image of the document 26 is read by the contact image sensor 27. The document 26 is brought into close contact with the contact image sensor 27 by a platen roller 28. The image read by the contact type image sensor 27 is recorded on the recording paper 29 by the thermal head 30. Note that recording paper 2
9 is brought into close contact with the thermal head 30 by a platen roller 31. In addition, 21 is a power supply.

Next, the operation will be described. When receiving,
The image signal received from another facsimile machine first
It is introduced into the control board 22. The decoding unit existing in the control board 22 decodes the image signal into an image line by line, and sends a recording signal corresponding to the image to the thermal head 30. The thermal head 30 performs recording on the recording paper 29 based on the recording signal. Then, the platen roller 31 rotates by an amount equivalent to one line, and advances the recording paper 29 in the direction of arrow a. The above operation is performed over one page, and an image for one page is recorded on the recording paper 29. As a matter of course, when the remaining amount of the recording paper 29 is exhausted, recording cannot be performed, and generally, the recording paper cannot be received.

There is also a facsimile machine in which a memory for storing image signals is provided on the control board 22. Such a facsimile apparatus automatically stores both received image signals in a memory when the recording paper 29 is exhausted during reception or the like. When the recording paper 29 is replenished and becomes recordable, an image corresponding to the image signal in the memory is recorded on the recording paper 29 automatically or in accordance with a recording instruction input to the operation panel 23. Further, even when the reception is started without the recording paper 29, the received image signal is stored in the memory.

At the time of transmission, first, the document 26 is inserted up to the position of the feed roller 24. Then, the document 26 moves in the direction of arrow b according to the rotation of the feed roller 24, and is carried to the position of the contact image sensor 27. At this time, when a plurality of originals 26 are inserted in a stack, the originals are separated one by one by the separating pieces 25. Then, the original 26 is moved by the platen roller 28 while the image is read by the contact image sensor 27. The image read by the contact-type image sensor 27 is encoded by an encoding unit existing on the control board 22 and then transmitted to the destination input to the operation panel 23.

Since the conventional facsimile apparatus is configured as described above, if the memory is not provided, if the receiving frequency is high, the recording paper must be replenished frequently, which is inconvenient for the user. In addition, there was a problem that running costs were also high. Also, even if a memory is provided, if the frequency of reception is high, overflow of the memory is likely to occur, and then the reception will be in an unreceivable state, so that the other party must resend the original, which is troublesome for the user. There were issues such as.

[0015] In addition, recording and processing for word processors and computers
In a display device, when a document or a program is created, in order to obtain a completed document or a completed program, correction and proofreading are often performed based on a document or a program list output on a recording sheet (test print is common). ,
As a result, there is a problem that the waste of recording paper is increased and the creation cost per program per document is naturally increased.

Further, in a word processor or the like, when a document is corrected or checked on a display device such as a CRT or a liquid crystal without performing a test print, an image of the document is displayed on a single screen for viewing. However, since the resolution of the display device is generally not high, fine display is not performed, and it is not easy to proceed with elaboration or the like by judging characters in a document while being displayed on one screen. Therefore, there has been a problem that the number of test prints is not reduced and the running cost cannot be suppressed.

As another prior art, Japanese Patent Laid-Open Publication No.
No. 17978, Japanese Unexamined Patent Publication No. 62-116191, Japanese Unexamined Patent Publication No.
Japanese Patent Application Laid-Open Nos. 4-18353, 64-18354 and 64-18355 each disclose the disclosure.

On the other hand, in recent years, a rewritable film that can be repeatedly recorded / erased using a heating means such as a thermal head or a laser beam has been developed. The rewritable (recording) film is disclosed in U.S. Pat. No. 4,695,528 and JP-A-55-15419.
No. 8, JP-A-57-82086 and the like, and known examples such as resin-organic low-molecular-weight substances, dyes known in WO90 / 11898, JP-A-02-188294, and the like.

More specifically, the former is composed of a matrix material made of a thermoplastic resin or the like and an organic low-molecular substance dispersed in the matrix material. It has the property of changing state. That is, it has two state transition temperatures T1 and T2 (T1 <T2) at a temperature higher than the specific temperature T0, and after being heated and maintained at the state transition temperature T2 or more, when cooled to the specific temperature T0 or less, it becomes cloudy, It is in a light-shielded state. The recording layer in the cloudy state is referred to as a state transition temperature T.
The recording layer becomes transparent when it is cooled to a specific temperature T0 or lower after heating and holding it at one or more and lower than T2. These state changes are mainly based on changes in the organic low-molecular substance in the recording layer.

On the other hand, the latter only controls thermal energy,
That is, the lactone ring can be opened by heating at a high temperature to form a colored compound, or the lactone ring can be closed by heating at a low temperature to return to a colorless leuco compound. This phenomenon is due to the structure of the developer and the reversibility of the leuco dye.
Can be repeated. Specifically, salts of gallic acid and fatty acid amines and the like are short as the color-reducing agents.
In the example shown above, the first thermal energy (high temperature)
The recording is performed with the second thermal energy (low temperature), and the recording is repeatedly performed only by controlling the thermal energy.

[0021]

In the conventional recording and display apparatus, since the above-mentioned rewritable film is not used as the recording paper, the image cannot be repeatedly recorded / erased, and the rewritable film is not used. In case
However, there is a problem that erasure cannot be surely performed even if there is a problem.

[0022] that the present invention has been made to solve the above problems, which have rows repeatedly recording and erasing the colored image due to heat energy, which practically completely erased (erase to reusable state) It is an object of the present invention to provide a rewritable recording and display device capable of obtaining a high-quality image when a colored image is re-formed after erasing.

[0023]

Means for Solving the Problems] rewritable Symbol record display equipment according to the first aspect of the present invention, the first thermal energy
An image is recorded, and a second heat energy having a lower temperature than the time of the recording is recorded.
By erasing the recorded image with the rugge, the image recording,
A rewritable recording medium capable of repeatedly erasing data;
Recording control means for recording an image on a recording medium;
Erasing control means for erasing the image after recording;
And at least a control circuit for controlling the transport of the body,
The image recorded using the recording control means is erased by the erase control means.
When erasing by using the step, the control circuit is operable to reset the 1
The feed amount of the recording medium for erasing a line is represented by an image record.
The feed amount of the recording medium for the recording of one line during recording
The control is performed so that the image becomes full, and the image is erased .

According to a second aspect of the present invention, there is provided a rewritable recording / display apparatus, comprising: an image recorded on a rewritable recording medium;
When erasing a plurality of messages,
This is to output an electric pulse to erase an image .

[0025]

According to the first aspect of the present invention, there is provided a rewritable recording / display apparatus which records an image with a first thermal energy, and
The recorded image is erased by the second heat energy which is lower than the recording time.
Equipped with a rewritable recording medium to delete
The amount of feed of the recording medium for erasure of the
Less than the feed amount of the recording medium for recording one line in
Control by erasing the image
Recording and erasing of images on media is free and maintenance
Reduced running and running costs, recorded images
Is reliably erased to achieve high image quality during image reproduction.

The rewritable recording display device according to a second aspect of the invention, a plurality of energization path continuous from the erasing control means
Output the image to erase the image,
Can be erased.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional side view of a rewritable recording and display device, for example, a display device according to an embodiment of the present invention.

In the drawing, a rewritable recording medium (thermo-reversible recording medium) 5A is wound and supported between sheet rollers 3 and 4. As the rewritable recording medium 5A, for example, a dye-based coloring agent in which a coloring reaction (image recording) occurs by thermal energy at a predetermined temperature and an erasing reaction (erasing a recorded image) by thermal energy lower than the coloring. , And details thereof will be described later.

At the lower portion of the frame 1, for example, a thermal head 11A is disposed as a heating means for coloring. The thermal head 11A generates heat under the control of the controller 8, and the rewritable recording medium 5A
Heating element 11 for heating to a predetermined temperature (coloring temperature)
a.

In the frame 1, the controller 8
The eraser 12A is provided as a decoloring heating means for heating the rewritable recording medium 5A after the colored image is recorded and displayed to a low temperature equal to or lower than the coloring temperature.

The controller 8 for controlling the thermal head 11A and the eraser 12A controls any one of a voltage applied to the thermal head 11A and the eraser 12A, a conduction time, and the number of conduction pulses.

Here, the details of the rewritable recording medium 5A will be described.
Is composed of a support, a leuco dye composed of a leuco compound, a recording layer composed of a binder and the like, and a protective color-reducing agent which thermally reacts with the leuco dye to develop or reduce the color, and a protective layer.

The above-mentioned color-degrading agent is a compound having, in the same molecule, a group which exhibits a color developing property with respect to a leuco dye by the action of heat and a group which exhibits a color-reducing property. The color-developing agent shows the property of an acid by the action of heat or the property of a base, and is, for example, a salt of a phenol carboxylic acid and an organic amine acid as shown by the following chemical reaction formula. .

[0034]

Embedded image

In this structural formula, the phenolic hydroxyl group is a group that develops color with respect to the leuco compound.
It functions to open the lactone ring of the leuco compound to color the leuco compound. Further, the amine salt of a carboxylic acid is a group that exhibits a color-reducing property with respect to a leuco compound,
It functions to close the lactone ring of the leuco compound to return the leuco compound to colorless.

In general, the leuco compound changes from colorless to colored by thermally reacting with the phenolic compound to open the lactone ring. In addition, a colored leuco compound having an open lactone ring returns to a colorless leuco compound by closing the lactone ring upon contact with a basic substance. The colored leuco compound and the colorless leuco compound are represented by the following structural formulas.

[0037]

Embedded image

As described above, due to the reversibility between the developer and the leuco dye, the developer can open the lactone ring of the colorless leuco dye only by controlling the heat energy as shown in the above chemical reaction formula. It has the property of being able to ring to form a colored compound or to close the lactone ring to return to a colorless leuco body.

Next, the operation will be described. When the rewritable recording medium 5A supported by the upper and lower sheet rollers 3 and 4 is conveyed in the vertical direction, and the controller 8 controls any of the applied voltage, the energizing time, and the number of energizing pulses to the thermal head 11A, the thermal head When the heating element 11a of 11A generates heat, the rewritable recording medium 5A being conveyed is heated to the coloring temperature. As a result, a coloring reaction occurs on the rewritable recording medium 5A, and a colored image is recorded on the rewritable recording medium 5A by the coloring reaction.

After the one-screen color image is recorded on the rewritable recording medium 5A in this manner, the rewritable recording medium 5A is stopped and provided for display. After the display, the rewritable recording medium 5 is displayed.
The colored image A (image recording portion) is erased by being heated to a decoloring temperature lower than the above-mentioned coloring temperature by the eraser 12A. Therefore, the recording of the colored image on the rewritable recording medium 5A, the display of the colored image after the recording, and the erasing of the colored image after the display can be repeatedly performed.

FIGS. 2 and 3 are longitudinal side views of a facsimile apparatus according to another embodiment of the present invention. The same or corresponding parts as in FIGS. Is omitted.

In the figure, between the left and right sheet rollers 3 and 4, an endless belt-shaped rewritable recording medium 5 is provided.
B and 5C are wound and supported and conveyed in the horizontal direction. The rewritable recording media 5B and 5C have the same properties as those of the display device. Thermal head 11B,
11C causes the rewritable recording media 5B and 5C to develop color by thermal energy and
B, 5C, and a thermal head 1
1B can erase (decolor) the recorded colored image.

A platen roller 14 for pressing the rewritable recording media 5B, 5C against the thermal heads 11B, 11C is provided. Further, the rewritable recording media 5B, 5B are interposed between the sheet rollers 3 and 4.
A pinch roller for sandwiching and transporting C is provided. Reference numeral 2 denotes a display window for confirming the recording results of the rewritable recording media 5B and 5C in a see-through manner.

In FIG. 3, a static heating element (image erasing means) 12C is provided as an eraser for erasing a colored image recorded on the rewritable recording medium 5C. Therefore, the rewritable recording medium 5B,
Erasing of the colored image recorded on 5C can be performed by either the control of the thermal head 11B or the static heating element 12C.

Next, the operation will be described. 2 and 3, rewritable recording media 5B and 5C supported by left and right sheet rollers 3 and 4 are conveyed in the horizontal direction, and
When any one of the applied voltage, energizing time, and energizing pulse number to the thermal heads 11B and 11C is controlled, the heating elements of the thermal heads 11B and 11C generate heat, so that the rewritable recording media 5B and 5C being conveyed have a color development temperature. Heated until. As a result, a coloring reaction occurs on the rewritable recording media 5B and 5C, and a color image is recorded on the rewritable recording media 5B and 5C by the coloring reaction. In this way, after one screen of colored image is recorded on the rewritable recording media 5B, 5C, the rewritable recording media 5B, 5C are stopped,
Provided for display.

After the display, the colored images (image recording portions) on the rewritable recording media 5B and 5C are displayed.
Is erased by being heated to an erasing temperature lower than the above-described coloring temperature by the erasing function of the thermal heads 11B and 11C or the static heating element 12C. Accordingly, the recording of the colored image on the rewritable recording media 5B, 5C as described above, the display of the colored image after the recording, and the deletion of the colored image after the display can be repeatedly performed.

In the embodiment of the display apparatus shown in FIG. 1, a description has been given of a case in which the rewritable recording medium 5A is scrolled in the vertical direction. However, the rewritable recording medium 5A is moved in the horizontal direction by the same principle and structure as in this case. Scrolling may be performed, and the same effect is obtained. Also, in the embodiment of the facsimile apparatus described above, the rewritable recording media 5B and 5C are scrolled in the horizontal direction. However, the rewritable recording media 5B and 5C are scrolled in the vertical direction by the same principle and structure as in this case. The same effect may be obtained.

In each of the above embodiments, a case has been described in which a colored image for one screen is recorded and displayed on the rewritable recording media 5A to 5C, and then the colored image is erased.
Windshield and display window 2 that make up the display screen
On the other hand, the rewritable recording media 5A to 5C may be made sufficiently long. In this case, colored images for several screens can be stocked on the rewritable recording media 5A to 5C. For this reason, by adding a display screen selection function to the controller 8, it is possible to selectively display several screens of colored images stored in the rewritable recording media 5A to 5C.

Further, in each of the above embodiments, the rewritable recording media 5A to 5C are formed in an endless belt shape, but the rewritable recording media 5A to 5C are formed in a finite belt shape, and both ends of the rewritable recording media 5A to 5C are formed. Alternatively, a roll type winding one end may be used. In this case, it is possible to record colored image information for several screens on the rewritable recording media 5A to 5C, and it is possible to develop a method of selecting and displaying colored images for several recorded screens.

Further, the thermal heads 11A to 11C and the eraser (decoloring heating means) 12 described in each of the above embodiments are used.
The arrangement positions of A and 12C may be different from those in the above embodiments, and the arrangement positions are not limited. Further, the thermal heads 11A to 11C
The erasers 12A and 12C may be fixed or mobile.

A facsimile apparatus according to another embodiment of the present invention will be described below with reference to the drawings. In FIG. 4, a roller 52 transports a rewritable (recording) film (rewritable recording medium) 55 and brings the rewritable film 55 into close contact with the thermal head 50. The rotatable head fixing base 56 fixes the thermal head 50 and switches the position of the thermal head 50 to the roller 52 side or the platen roller 51 side.

The support rod 57 fixes the rotating shaft of the head fixing base 56 at the right end. The right end of the spring 58 is fixed to the apparatus main body and is held in a hole penetrating the support bar 57, and the left end is held by an annular projection on the support bar 57 to push the support bar 57 to the left. The cam 59 moves the head fixing base 56 supported by the support bar 57 left and right using the elastic force of the spring 58.

In this embodiment, the thermal head 50
Is an implementation example of the recording means and also an implementation example of the rewriting recording means. That is, they are also used.

FIG. 5 is a block diagram showing one of the electric circuits existing on the control board 42 related to the recording operation. In FIG. 5, a control circuit (control means) 61
Controls the other blocks and the head fixing table 56
To rotate. The modem 62 is connected to a telephone line via a network control unit (NCU), and demodulates an image signal which is a signal obtained by encoding an image from a signal received from the telephone line. The decoding unit 63 decodes the image signal and outputs an image. The memory 64 stores an image signal. The reduction circuit 65 reduces an image. The recording circuit 66 supplies a recording signal corresponding to the pixel of the image to the thermal head 50. Drive circuit 67
Is a motor (see FIG. 4) for rotating the cam 59, the roller 52, and the like.
The drive signal is supplied.

Although not shown in FIG. 4, the control board 42 and the thermal head 50 are connected by a cable. Further, the control circuit 61 is realized by a microprocessor.

Next, the operation of the facsimile machine will be described. First, a case where the user selects and uses the rewritable film 55 and the recording paper 49 will be described. When the user wants to record the received image on the rewritable film 55, the user inputs the information to the operation panel 43 in advance, and the control circuit 61 recognizes the fact. At this time, the control circuit 61 does nothing when the thermal head 50 is already located on the rewritable film 55 side, but when the thermal head 50 is located on the recording paper 49 side and is in close contact with the platen roller 51, the motor 61 A rotation instruction is given to the motor for rotating the cam 59 via the drive circuit 67.

Then, the cam 59 rotates by 180 °, and accordingly the support bar 57 moves leftward together with the head fixing base 56 by the elastic force of the spring 58. Subsequently, the head fixing base 56 rotates counterclockwise to a predetermined position where the thermal head 50 records on the rewritable film 55. Further, the cam 59 rotates by 180 °, and accordingly the support bar 57 is pressed rightward. Accordingly, the head fixing base 56 supported by the support rod 57 is pressed rightward, and the thermal head 50 fixed to the head fixing base 56 is pressed.
Will come into close contact with the roller 52.

On the other hand, the received image is recorded on a recording paper 49.
If the user wants to record the information, the user inputs that fact in advance on the operation panel 43. Then, the control circuit 61 recognizes the fact. At this time, the control circuit 61 does nothing when the thermal head 50 is already located on the recording paper 49 side, but when the thermal head 50 is located on the rewritable film 55 side and is in close contact with the roller 52, the thermal head 50 The instruction to switch the position of is output. The switching operation is the same as the case of switching from the recording paper 49 side to the rewritable film 55 side. However, in this case, the head fixing base 56 moved leftward by the rotation of the cam 59 rotates clockwise to a predetermined position.

After the position of the thermal head 50 is set, an image signal received from the telephone line and demodulated by the modem 62 and generated is decoded by the decoding unit 63 into an image. The image becomes a predetermined recording signal in the recording circuit 66, and is recorded on the recording paper 49 or the rewritable film 55 by the thermal head 50.

The copying operation in the conventional facsimile apparatus is performed in the same manner as in the conventional apparatus shown in FIG. That is, when the document 46 is inserted to the position of the feed roller 44, the document 46 moves in the direction of the arrow b according to the rotation of the feed roller 44, and is conveyed to the position of the contact image sensor 47. At this time, when a plurality of originals 46 are inserted in an overlapping manner, the originals are separated one by one by the separating pieces 45. It is also possible to execute an operation of recording the image read by the contact image sensor 47 as it is. At this time, it is of course possible to use the rewritable film 55 as a recording target. Further, when the received image signal is stored in the memory 64, the received image can be recorded on the rewritable film 55 when a memory overflow occurs. The operation in this case will be described with reference to the flowchart in FIG.

First, the thermal head 50 is set on the recording paper 49 side. And when there is the recording paper 49,
The received image is recorded on recording paper 49 (step ST
1 to ST3). When the recording paper 49 runs out and recording on the recording paper 49 cannot be performed (step ST)
4), the control circuit 61 instructs the operation panel 43 to display an error. Further, the received image signal is transferred from the modem 62 to the memory 64 and stored in the memory 64 in accordance with an instruction from the control circuit 61 (step ST5). In this state, reception continues, and if an image signal is received exceeding the size of the memory 64, an overflow occurs. In such a conventional facsimile machine, there was no other way but to interrupt reception in such a case.

However, in the facsimile apparatus according to the present embodiment, recording on the rewritable filter 55 is possible. That is, when the recording paper 49 runs out, the output destination of the image signal is changed to the memory 64, and at the same time, the thermal head 50 is moved toward the rewritable film 55 by the above-described method (step ST6). Then, when the overflow occurs, the control circuit 61 controls to output the image in the memory 64 to the thermal head 50 (steps ST7 and ST8). Since the thermal head 50 is in close contact with the rewritable film 55, the received image is recorded on the rewritable film 55.

The image signals subsequently received are sequentially stored in the area of the memory 64 where the image signals have been output. Then, when the rewritable film 55 has reached the film end, the reception is interrupted (step ST9). The above operation is repeated until reception ends normally (step ST10). Here, if the reception ends normally without causing a memory overflow, the image signal in the memory 64 is decoded by the decoding unit 63 from that point,
The image is output to the thermal head 50 via the recording circuit 66. Therefore, a received image not recorded on the recording paper 49 is recorded on the rewritable film 55.

In the case of a configuration having no memory 64, the recording paper 49 is just before the recording paper 49 is exhausted.
It can be detected that it is going to disappear. ),
When the reception of a certain page is completed, the thermal head 50 is switched to the rewritable film 55 side. Then, from the next page, the received image is displayed on the rewritable film 55.
Can be recorded.

The received image is recorded on the rewritable film 55 as a guide,
5 can be used so that the user who confirms the image on the recording paper 49 records a necessary page on the recording paper 49. In this case, the thermal head 50 is set on the rewritable film 55 side in advance. Then, the received image signal is input from the modem 62 to the memory 64 and stored in the memory 64. At the same time, the received image signal is decoded by the decoding unit 63 into an image. Then, this image is reduced by the reduction circuit 65 to 1
/ 4. The reduced image is held by the reduction circuit 65 together with the page number. When the image for four pages is received or the reception is completed, the reduction circuit 65 outputs the image to the thermal head 50 via the recording circuit 66. Therefore, the reduced images of four pages are recorded on the rewritable film 55. Here, the above control is all managed by the control means 61.

Next, the user enters the rewritable film 55
Look at the above image and enter the required page number
To enter. The control circuit 61 outputs an instruction to move the thermal head 50 to the recording paper 49, receives the input page number, and outputs an image signal corresponding to the page number from the memory 64 to the decoding unit 63. Then, the decoding unit 63 decodes the image from the image signal, and outputs the image to the thermal head 50 via the recording circuit 66. Since the thermal head 50 is set on the recording paper 49 side,
The necessary image is recorded on the recording paper 49 in its original size. And
When the recording of the necessary image is completed, the recording on the rewritable film 55 is deleted.

Here, a method of erasing the recording on the rewritable film 55 will be described. When the recording on the rewritable film 55 becomes unnecessary, the user inputs an erasure instruction to the operation panel 43. The control circuit 61
In response to the erasing instruction, or when no reception is being performed even if there is no instruction, an instruction to automatically move the thermal head 50 to the rewritable film 55 is output. Then, the thermal head 50 comes into close contact with the rewritable film 55. Then, the control circuit 61 controls the recording circuit 66
An instruction is given to energize the thermal head 50 so that the rewritable film 55 is heated at a lower temperature than when recording was performed. At the same time, the roller 52 is rotated to move the rewritable film 55 while causing a decoloring reaction. And rewritable film 5 for all lines
5 to erase the image. Also, since the operation at the time of transmission is the same as the operation of the conventional facsimile machine,
Description is omitted.

In the above embodiment, the rewritable film 55 and the recording paper 49 can be
Although the recording on the rewritable film 55 and the erasing of the rewritable film 55 are described above, the same effects as in the above embodiment can be obtained even if a thermal head for the rewritable film 55 and a recording head for the recording paper 49 are separately provided.

In this case, a head switching mechanism is not required, and the recording paper 49 is not limited to a thermosensitive recording paper.
That is, plain paper recorded by an electrophotographic method using a laser or an LED may be used. Then, a recording head and an erasing head for the rewritable film 55 may be separately provided.

In the above embodiment, the rewritable film 55 is used when the memory 64 overflows. However, the rewritable film 5 is used for normal recording.
5, the recording paper 49 may be used at the time of overflow. In FIG. 4, an endless belt-shaped rewritable film 55 is shown.
It is good also as a thing of a system which winds up by one platen.

As described above, in this embodiment, 1) recording similar to that of a normal facsimile machine, 2) recording on the rewritable film 55 when the recording paper 49 runs out, 3) recording only on the rewritable film 55, 4) Only the necessary information recorded on the rewritable film 55 can be recorded on the recording paper 49.

Here, the present embodiment will be described in more detail. A control unit 61 for selecting and controlling whether the recording target is the recording paper 49 or the rewritable film 55 includes:
It has three meanings. That is, first, the heating means (thermal head 50) is set at a desired position, second, the applied energy (thermal energy) of the heating means is controlled, and thirdly, the rewritable film 55 is reduced. It is to manage when recording an image.

In FIG. 4, the thermal head 50 is rotated by 180 ° as shown by a two-dot chain line by a head fixing base 56, a support rod 57, a spring 58, and a cam 59, and the recording paper 49 and the rewritable paper are rewritable by the same thermal head 50. Film 5
No. 5 was recorded or erased. However, as shown in FIG.
May be slid up and down. As a slide mechanism, as shown in FIG.
On the back side of the head 0, a rail 72 is provided in parallel with the head support 71, and a rotation support rod 73 is connected directly or indirectly by a motor (not shown).

FIG. 8 shows the operation in the horizontal direction for easy understanding of the operation in the vertical direction in FIG. As an operation, when recording is performed on the rewritable film 55 side, a motor (not shown) is rotated through a motor drive circuit 67 by a command from the control unit 61,
The motor rotation support rod 73 is rotated left. When the motor rotation support rod 73 is rotated counterclockwise, the thermal head 50 fixed to the head support base 71 is moved to the near side, and is set at a designated position according to an instruction from the control means 61. Here, a head pressing mechanism that acts on the upper side of the head support 71 to press the thermal head 50 may be provided.
On the other hand, in the case of recording on the recording paper 49, similarly, it moves rearward in accordance with an instruction from the control means 61.

In another configuration, as shown in FIG.
The thermal head 50 is adhered to a belt 75 made of metal, rubber, or the like, and the belt 75 is wound around a roller 74 rotated by driving a motor (not shown).
Then move it up and down). These controls are instructed by the control unit 61. The control means 61 is, for example, as shown in FIG.
And a RO storing operation contents.
M81, a rewritable RAM 82, an I / O 83 for outputting an input signal of an operation panel or a sensor or a drive signal of a motor, a counter 84 for managing a recording time and a rotation time of the motor, and the like perform the above-described operations. Here, the control unit 61 includes, in addition to the configuration shown in FIG. 10, a unit for selecting a recording target and moving a heating unit such as the thermal head 50.

As another configuration, as shown in FIG. 11, there is a configuration in which a thermal head 50 is provided between a roller 52 on the rewritable film 55 side and a platen roller 51 on the recording paper 49 side. In this case, the thermal head 50 is on the upper side,
It has a structure in which the heating elements are arranged on both lower sides. A cam 59 (not shown in FIG. 11) similar to that shown in FIG. ) To the roller 52 side or the platen roller 51
Can be selectively moved to the side.

In another example, there is a configuration in which the thermal head 50 is not moved as shown in FIGS. In this case, the content of the instruction from the control means 61 is different from the content described above. That is, when recording on the recording paper 49, the operation is the same as that described above, but the operation when recording on the rewritable film 55 is different. This is a rewritable film 55
This is because recording is not possible because the recording paper 49 is inserted between the recording head 49 and the thermal head 50. Therefore, when the rewritable film 55 is recorded or erased, the instruction content from the control means 61 is to rotate the recording paper 49 clockwise and return the rewritable film 55 to the platen roller 54 (the right roller 54) to directly transfer the rewritable film 55 and the thermal head 50. Make contact.

In another configuration, as shown in FIG. 14, the recording paper 49 in the form of cut paper is
15 and 16, a rewritable film 55 in the form of cut paper and a recording paper 4 as shown in FIGS.
9 can be used. In this case, the applied energy (heat energy) of the heating means is controlled (described later) to cope with the situation. In such a case, whether to use the rewritable film 55 or the recording paper 49 is set on the operation panel (operation panel) 43 and the information is input to the control means 61 or connected to the rewritable recording device. It is configured by setting a command from an interface (for example, a Centro interface) and inputting the information to the control means 61.

Further, as shown in FIG. 17, thermal transfer recording and rewritable recording can be combined. However, the recording paper 49 is plain paper, and 86 is an ink ribbon. The operation in this case is also substantially the same as the content described above.

Next, control of the applied energy (thermal energy) of the heating means will be described. FIG. 18 shows the control means 6
1 and a recording circuit 66. The recording circuit 66 further includes a rewritable recording control unit 91, a rewritable erasure control unit 92, a recording paper recording control unit 93, and a selector 94. Each of the control units 91 to 93 stores an energy table for heating the thermal head 50, and the selector 94 connects any of them to the thermal head 50 according to an instruction from the control unit 61.

FIG. 19 shows an example in which the rewritable film 55 is used as a guide. This is because a received image is reduced in a facsimile machine and a rewritable film 5 is used.
5. The received image may be recorded without being reduced, but if the resolution of the thermal head 50 is set to 6 lines per mm, preferably 12 lines, it is possible to visually check whether the reduced image or character is necessary or unnecessary and save the image. If necessary, recording can be performed on the recording paper 49. For example, in the example of FIG. 19, the center number is the page number, and when this number is input from the operation panel 43, recording can be performed on the recording paper 49. The reduction method in the reduction circuit of FIG. 5 is realized by, for example, a method of thinning out image data by half, a reduction method by a perspective method, or the like.

As described above, since the recording target can be selected, the recording target is recorded on the rewritable film 55,
Only the final image or the necessary image can be recorded on the recording paper 49, and the running cost can be reduced. Further, in a facsimile machine or the like, when the recording paper 49 runs out,
Since it is possible to automatically record the received image on the rewritable film 55, it is possible to reduce the chance of interruption of reception. Further, the rewritable film 5 is controlled by the control means.
5, a reduced image is formed, and revision and the like can be easily performed without recording a document in the middle of correction and proofreading on the recording paper 49.

In the above embodiment, an example of a facsimile apparatus has been described. However, the present invention is not limited to this, and can be applied to various recording and display devices, and various changes can be made. For example, a recording device such as a word processor does not require the modem 62 and the decoding unit 63 shown in FIG. In FIG. 4 of the present embodiment, the thermal head 50 is rotated by the cam 59, but may be rotated by a motor or the like to achieve the same effect.

In the above embodiment, the recording of one thermal head 50 on the rewritable film 55 and the recording paper 49 and the erasing of the rewritable film 55 are performed. However, the heads of the rewritable film 55 and the recording paper 49 are separately provided. The same effect as the above embodiment can be obtained. In this case, a mechanism for moving the head becomes unnecessary. Although the recording method using the thermal head 50 has been described in the above embodiment, plain paper recorded by a recording method using a laser or LED as a light source or ink jet recording may be used. Then, a recording head and an erasing head for the rewritable film 55 may be separately provided.

In the above embodiment, the rewritable film 55 is used when the memory 64 overflows. However, the rewritable film 55 may be used at the time of normal recording, and the recording paper 49 may be used at the time of overflow. In FIG. 4, an endless belt-shaped rewritable film 55 is shown, but a rewritable film 55 may be wound on one platen.

FIG. 20 is a schematic diagram showing the configuration of a rewritable recording apparatus using a rewritable film. In the figure, a rewritable film 101 that can be repeatedly rewritten is shown.
Is the platen roller 1 that is in pressure contact with the thermal head 103
02 and the roller 104 so as not to be loosened. The thermal head 103 having a plurality of heating elements (not shown) also serves as heating means for applying the first energy and the second energy. Rewritable film 10
1 is fed to the gears 105 and 1
06 is driven by the motor 107.

The motor 107 is controlled by the control circuit 108. The recording control means 109 includes a recording data terminal 109a.
And outputs an image signal corresponding to a desired display image input from the thermal head 103 with the first thermal energy.
To generate heat. The erasing control means 110 outputs an image erasing signal corresponding to a desired erasing instruction input from the erasing data terminal 110a, and causes the thermal head 103 to generate heat with the second thermal energy.

Here, the rewritable film 101
Forms a colored (monochromatic, for example, blue) image by applying the _first thermal energy (h ₁ ) of a heat medium such as the thermal head 103, and the image has a memory property in a normal environment (temperature, humidity). Having. Further, the recording film is a rewritable recording film capable of erasing a formed image by applying a _second heat energy (h ₂ ).

As shown in FIG. 22, for example, this rewritable film 101 is composed of a protective layer 101a for improving durability, a recording layer 101b made of a dye, a color-reducing agent, a binder, and the like, and a base 101c. ing. For example, a short time (1 ms) is applied to the rewritable film 101 from the direction of arrow P by the thermal head 103 or the like.
The first thermal energy (h1) is applied at a high temperature (about 200 to 350 ° C.) to form an image, and a long time (about 5 ms to 2 s) and a low temperature (about 80 to 1 ° C.).
When the second thermal energy (h ₂ ) is applied at about 50 ° C.), the data can be erased.

Next, the operation of the rewritable recording apparatus will be described. The rewritable film 101 is a motor 10
7 through the drive transmission system of the second gear 106 and the first gear 105, and the platen roller 10 is driven by friction with the platen roller 102 thermal head 103.
With the rotation of No. 2, it is sent in the direction of arrow Z. When a recording signal is input to the recording data terminal 109a, the recording control means 109 supplies a current to the thermal head 103 at a predetermined timing, thereby causing a heating element (not shown) to generate heat and color the rewritable film 101. (Synonymous with image formation). When the coloring for one line is completed, the driving means feeds one line in the direction of arrow Z, and the coloring is performed by the same operation.

By repeating such an operation,
A flat image is formed on the rewritable film 101, and the film feed amount for one line (hereinafter referred to as pitch) corresponds to the resolution of the thermal head 3 (for example, if the number of heating elements is 6 lines / mm, The pitch is about 167 μm).

Then, as shown in FIG.
When a signal of, for example, 4 pulses / line is given from the control circuit 108, the first gear 105 is changed to A → B → C → D → E.
And the second gear 106 is driven, and the platen roller 10
2 and the rewritable film 101 are fed in the arrow Z direction. The above is the image forming operation (coloring operation), and the viewer can see the image from the arrow Y direction.

Next, the operation of erasing an image formed on the rewritable film 101 will be described. At the time of erasing an image, the erasing control means 110 operates the thermal head 10 at a predetermined timing inputted from the erasing data terminal 110a.
(3) Decoloring (same as erasing an image) by causing a heating element in a desired erasing range to generate heat. At this time, the second thermal energy (h ₂ ) to the thermal head 103 lowers the temperature of the heating element (for example, 80 to 150) as compared with the _first thermal energy (h ₁ ) at the time of coloring as described above. The power supply time, the applied voltage, the power supply pulse, and the like to the thermal head 103 are controlled so that the power supply pulse to the thermal head 103 becomes longer (for example, about 5 ms to 2 s).

As described above, the heating means such as the thermal head 103 can be used by the recording control means 109 and the erasing control means 110, so that an inexpensive apparatus can be realized. Note that the recording control means 109 and the erasing control means 110 are divided into two for the sake of convenience, but there is no change even if the recording and erasing means is constituted by one.

Next, according to the erasing method according to the present invention, the pitch of one line is equal to or smaller than that at the time of color development (at the time of recording, etc.). This corresponds to one-line recording, and corresponds to one-line decoloring at the time of decoloring.)
This is because if they are the same, high-speed erasing can be performed even if there is some unerased portion, and if the pitch is reduced, a rewritable film 101 that does not remain unerased even if it takes some time is obtained.

A method of reducing the pitch at which the rewritable film 101 is sent out is, for example, one method for erasing an image.
The line 2 pulse signal is sent from the control circuit 108 to the motor 10.
7 (this is a half of the time of color development), the motor drives the rewritable film 101 of the platen roller 102 driven through the drive transmission system of the second gear 106 and the first gear 105 at the time of color development. Feed in the direction of arrow Z at half pitch. This state will be described with reference to FIG.
Half-pitch driving, so when coloring (recording)
Since one line corresponds to two lines at the time of decoloring, the rewritable film 101 from which each pattern of the image has been erased can be obtained.

Further, all the heating elements of the thermal head 103 may be heated by the second heat energy (h ₂ ). In order to eliminate unerased parts, all the heating elements are heated at the time of decoloring. The inventors have obtained experimental results that are most effective.

This is because, as shown in FIG. 23, when the heating element is caused to generate heat in the same pattern as that at the time of color development and the color is erased, the positions of the coloring pixels and the heating element are displaced, and unerased parts 150 are generated. In FIG. 23, hatched circles indicate coloring pixels, and broken circles indicate erased pixels. FIG. 24 is a diagram comparing the unerased amount when the heating element is heated and erased in the same pattern as when the color is developed (a in the figure) and when all the heat is emitted (b in the figure). As the operation of the apparatus, a signal is applied so that all the heating elements of the thermal head 103 generate heat from the drive signal given by the erasing control means 110, and the rewritable film 101 is sent out simultaneously with the platen roller 102 in the arrow Z direction. Perform decoloring.

In the above description, the thermal head 10
Although the signal is given so that all the heating elements of No. 3 generate heat, a signal may be given so that the heating elements generate heat as long as the area of erasure is larger than the area of recording. That is, when recording is performed on a small area (for example, half the area of the thermal head) as in the remaining balance notation on the card, heat is generated so as to be larger than the recording area (for example, ／ of the thermal head) and erased. To do it. That is, heat is generated in a desired range.

Further, another erasing method is a conventional one-line one-line method.
Instead of one energizing pulse, a plurality of micro energizing pulses were applied, and it was confirmed by experiments that the heat generation temperature could be suppressed to be substantially constant by applying a plurality of micro energizing pulses.

This is because the rewritable film 101 is 1
It can be erased by applying a _second thermal energy (h ₂ ) of about 5 ms to 2 s at about 20 ° C.
This is because the temperature of the heating element can be kept almost constant by repeating N and OFF, and FIG. 25 shows this state. In the figure, 111a is a graph showing the relationship between the heat generation temperature and time when the recording energizing pulse (FIG. 26) is applied, and 111b is the heat generation when the erasing energizing pulse (FIG. 27) is applied. It is a graph which shows the relationship between temperature and time.

According to the experiment of the inventor, ON, 10 μs,
When 500 to 1000 OFF pulses are applied, complete erasing can be performed using the thermal head 103 as shown in FIG. 28 (here, the temperature of the heating element is about 120 ° C.).
° C), this value varies depending on the constituent materials of the rewritable film 1, for example, when the optimum erasing temperature is 100 ° C,
The ON / OFF time of the energizing pulse is set to 9 μs, or the ON time is set to 8 μs and the OFF time is set to 10 μs. In any case, by applying a plurality of energizing pulses, the temperature change of the heating element can be gently suppressed, and complete erasure becomes practically possible.

The energizing pulse wave system is shown in FIG.
The heat generation temperature may be set to, for example, 100 to 140 ° C. as shown in FIG. 30, and the pulse length is longer than the ON time (about 100 μs) as shown in FIG. 150 μs). In addition, as shown in FIG. 31, an energizing pulse having an ON / OFF time of 5 μs may be used. In addition, as shown in FIG.

It should be noted that a plurality of energizing pulses for erasing are applied for each line, the film is fed, and a plurality of energizing pulses are applied again to complete erasing of one screen. Alternatively, a plurality of energizing pulses may be applied while feeding the film to erase one line, and this may be repeated to complete the erasure of one screen.

FIG. 33 is a block diagram showing the structure of the erase control means 110 for realizing this erase method. In the figure, the basic pulse generating means 110c is shown in FIGS.
A basic pulse generating means 110c and a pulse number setting means 110b for setting how many basic pulses are generated are shown in FIG.
And the erase data input from the erase data terminal 110a is sent to the erase control unit 110d. The erase control unit 110d generates a plurality of energizing pulse signals from the signals of the basic pulse generating unit 110c and the pulse number setting unit 110b, and transfers / applies the erase data and the energizing pulse for erasing to the thermal head 103. Then, one line of the formed image is erased. When erasing for one line is completed, 1
Lines are fed and erased by the same operation.

In the above embodiment, the case where a pulse motor is used as the motor 107 of the driving means has been described.
The same effect is obtained even in the case of a DC motor, an AC motor, or the like, and the first and second gears 105 and 10 of the drive transmission system are provided.
6 is not limited to the configuration described above. In the above embodiment, the color development and the decoloration are performed by the same thermal head 103. However, as shown in FIG. 34, the color thermal head 103a is provided on the platen roller 102 side as shown in FIG. The same effect can be obtained by providing the decoloring thermal head 103b on the roller 104 side even if it is divided into two.

In this case, unlike FIG. 20, it is not necessary to return or rotate the rewritable film 101 to the position of the thermal head 103, so that high-speed erasing can be performed. Note that the thermal head 10 for coloring is
3a, the position of the decolorizing thermal head 103b can be changed.
b may be configured to be located in front of the coloring thermal head 103b, and various changes can be made without departing from the scope of the claims.

The thermal head 103 as shown in FIG.
In the case where two heating means for recording and erasing are provided at the top and bottom as shown in FIG.
It is possible to perform, will be able to see the Y-direction, the two directions from the side opposite to the Y direction. In this case, if recording or erasing is performed at the same time, a large power supply is required. Therefore, upper recording and lower recording may be performed alternately. Further, the upper side can be erased and the lower side can be recorded. In this case, image information can be read only from the side opposite to Y. In the above description, the direction in which the rewritable film 101 travels is set to one direction in the Z direction. Needless to say, it's good.

Further, in the above-described embodiment, an example of a dye-based rewritable film is used as the rewritable film 101. However, the present invention is not limited to this, and a known rewritable film (a film capable of repeated recording / erasing can be used). ) Can be used. Other examples of the film include a resin-organic low-molecular substance-based, a thermochromic-based, and a polymer blend-based based on a change in transparency depending on temperature.

In the above embodiment, a thermal head is described as an example of a heating means. However, not only a means for directly applying heat but also an LED head, a liquid crystal head, and a laser which indirectly apply heat using light. The same effect can be obtained even if the heating means is constituted by a head or the like. Further, in the above embodiment, the rewritable film 101 is formed in a roll shape. However, as shown in FIG.
The same effect can be obtained even if color development and decoloration are performed by using No. 3.

[0111]

As described above, according to the first aspect of the present invention , an image is recorded with the first thermal energy, and the recording is performed.
Erasing recorded images with second thermal energy at lower temperature
Equipped with a rewritable recording medium, one line of which is being erased.
The feed amount of the recording medium for erasure is set to 1 during image recording.
Less than the feed amount of the recording medium for line recording
Control so that the image is erased.
It is possible to record and delete images on recording media freely and maintainers
Reduced running costs and running costs,
The effect is to ensure that the image is erased and the image quality is improved during image playback.
There is fruit.

According to the second aspect of the present invention, the erasure control means
Outputs multiple continuous energizing pulses from the stage to erase the image
To ensure that the image can be erased.
There is.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a display device according to a first embodiment of the present invention.

FIG. 2 is a schematic sectional view showing a facsimile apparatus according to a second embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view showing a state where the facsimile apparatus shown in FIG. 2 is equipped with a static heating element.

FIG. 4 is a schematic sectional view showing a facsimile apparatus according to a third embodiment of the present invention.

5 is a block diagram showing an electric circuit related to recording of the facsimile apparatus shown in FIG.

FIG. 6 is a flowchart illustrating an operation example of the facsimile machine illustrated in FIG. 4;

FIG. 7 is a schematic diagram of a main part of a facsimile apparatus according to a fourth embodiment of the present invention.

8 is a perspective view showing a slide mechanism in the facsimile machine of FIG.

9 is a perspective view showing another configuration of the slide mechanism in the facsimile apparatus of FIG.

FIG. 10 is a block diagram of a control circuit in the facsimile apparatus of FIG.

FIG. 11 is a schematic diagram of a main part of a facsimile apparatus according to the present invention.

FIG. 12 is a schematic diagram of a main part of a facsimile apparatus according to the present invention.

FIG. 13 is a schematic diagram of a main part of a facsimile apparatus according to the present invention.

FIG. 14 is a schematic diagram of a main part of a facsimile apparatus according to the present invention.

FIG. 15 is a schematic diagram of a main part of a facsimile apparatus according to the present invention.

FIG. 16 is a schematic diagram of a main part of a facsimile apparatus according to the present invention.

FIG. 17 is a schematic diagram of a main part of a facsimile apparatus according to the present invention.

FIG. 18 is a block diagram of a recording circuit in the facsimile machine of FIG.

19 is a perspective view showing a reduced display example of the rewritable recording film in the facsimile apparatus of FIG. 7;

FIG. 20 is a schematic configuration diagram of a rewritable recording and display device according to a fifth embodiment of the present invention.

21 is a schematic enlarged view of gears of the rewritable recording and display device shown in FIG.

FIG. 22 is a schematic view of a rewritable recording film.

FIG. 23 is a diagram illustrating an operation at the time of erasing a rewritable recording film.

FIG. 24 is a diagram showing a relationship between pixels shown in FIG. 23 and remaining erase amounts.

FIG. 25 is a diagram showing a change with time in the heat generation temperature of the thermal head.

FIG. 26 is a diagram showing a recording energizing pulse.

FIG. 27 is a diagram showing an energizing pulse for erasing;

FIG. 28 is a diagram showing the relationship between the number of pulses and the recording density.

FIG. 29 is a diagram showing a change with time in the heat generation temperature of the thermal head.

FIG. 30 is a diagram showing energizing pulses.

FIG. 31 is a diagram showing energizing pulses.

FIG. 32 is a diagram showing energization pulses.

FIG. 33 is a block diagram of an erase control unit in the fifth embodiment shown in FIG. 20;

FIG. 34 is a schematic configuration diagram of a rewritable recording and display device according to a sixth embodiment of the present invention.

35 is a schematic diagram of a thermal head and a rewritable recording film of the rewritable recording and display device shown in FIG.

FIG. 36 is a side sectional view showing a conventional display device.

FIG. 37 is a side sectional view showing a conventional facsimile machine.

FIG. 38 is a side sectional view showing a conventional facsimile machine.

[Explanation of symbols]

5A, 5B, 5C rewrite data table recording medium 8 controller 11A, 11B, 11C thermal head 11a heating element 12A eraser 49 paper 50,103 thermal head 55,101 rewritable film 61,108 control circuit 65 reduction circuit 66 recording circuit 91 rewritable Recording control unit 92 Rewritable erasure control unit 93 Recording paper recording control unit 109 Recording control unit 110 Erasure control unit

──────────────────────────────────────────────────続 き Continued on the front page (31) Priority claim number Japanese Patent Application No. 2-324574 (32) Priority date Hei 2 (1990) November 27 (33) Priority claim country Japan (JP) (31) Priority Claim No. Japanese Patent Application No. Hei 3-24532 (32) Priority Date Hei 3 (1991) February 19 (33) Priority Country Japan (JP) (72) Inventor Takayoshi Yamada 2--14-40 Ofuna, Kamakura-shi Mitsubishi Electric Corporation Lifestyle Research Institute (72) Inventor Masaru Onishi 2--14-40 Ofuna, Kamakura City Mitsubishi Electric Corporation Lifestyle Research Institute (72) Inventor Shigehiro Matoba 2-14-40 Ofuna, Kamakura City No. Mitsubishi Electric Corporation Lifestyle Systems Research Institute (72) Inventor Shoji Tamura 2--14-40 Ofuna, Kamakura City Mitsubishi Electric Corporation Lifestyle Systems Research Institute (72) Inventor Takashi Hiroishi 2-14-40 Ofuna, Kamakura City No. Mitsubishi Electric Stock Association (56) References JP-A-62-277854 (JP, A) JP-A-2-128894 (JP, A) JP-A-1-266584 (JP, A) JP-A-1-172896 ( JP, A) JP-A-2-286262 (JP, A) JP-A-63-166579 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H04N 1/23 102 B41J 2 / 32

Claims (2)

(57) [Claims] An image is recorded with a first thermal energy.
The recorded image with the second thermal energy lower than the recording time
To erase and record images repeatedly.
A rewritable recording medium, and an image recorded on the recording medium.
Recording control means for recording the image, and
Erasing control means for erasing, and controlling conveyance of the storage medium.
And at least a control circuit for controlling the recording medium.
Erasing control means for erasing an image recorded using recording control means.
When erasing using the
The feed amount of the recording medium to be recorded in one line during image recording.
Before the recording medium feed amount for recording
The control circuit is controlled to specialize in erasing the image.
A rewritable recording and display device using a rewritable recording medium . 2. An image recorded on a rewritable silver medium.
When erasing a plurality of messages,
The image is erased by outputting an electric pulse.
A rewritable recording / display apparatus using the rewritable recording medium according to claim 1 .