JP2830740B2 - Image display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device,
More particularly, the present invention relates to an image display device that displays signalized image information as a visible image that can be viewed.

[0002]

2. Description of the Related Art Conventionally, for example, a CRT, a liquid crystal display, a plasma display, and an LE have been used as image display devices for displaying data, such as a computer and a facsimile scanner.
Many devices, such as D display devices, have no moving parts and operate only by electric driving means.

Further, a belt-shaped photoconductor or dielectric is used as an image carrier, and a printing material such as toner is selectively adhered to the surface of the photoconductor or dielectric according to image data or is weakly fixed to display an image. Labels have been proposed and some have been put to practical use. Further, there is an image display device that uses a pixel constituent member including a printing material having magnetic properties and selectively reverses or moves the printing material according to image data to display an image.

On the other hand, an apparatus that operates only by an electric means without a mechanically movable part is expensive in applications such as a large-screen image display and a temporary still image display, and requires much labor for maintenance. It takes a lot of time to install.

[0005] In the case of using a belt-shaped photoreceptor or a dielectric, it is relatively easy to construct a large screen, to display a still image, and to install the entire apparatus. , The processing cost of the belt-shaped photoreceptor becomes expensive, there are difficulties in maintaining and maintaining stable transport, and there are technical issues such as expansion to color display or darkness of the display surface, etc. Not always enough.

Further, in the belt-shaped photoreceptor, technical problems remain unsolved in light resistance at the time of display and a change in characteristics associated therewith, a manufacturing cost when a screen is enlarged, and uniform characteristics. I have.

Similarly, in an image display apparatus using a printing material containing magnetic powder as a pixel constituting member, a large-screen still image is relatively easy to display, but the cost of color display is high and the image is dark. Challenges exist.

On the other hand, as a color image display method, a fine stripe or mosaic color pattern such as red, green and blue is provided on an image carrier on which an image is formed, and these color patterns are displayed. A method of appropriately displaying a color image with toner is disclosed in Japanese Patent Application Laid-Open No. Sho 59-22957.
No. 8 discloses this.

In the method disclosed in JP-A-59-229578, a voltage is applied to each color pattern on a belt-shaped image carrier. Then, the image carrier is accurately transferred with the needle-like electrodes fixed to each color pattern facing each other, thereby forming an electrostatic image and adhering toner.

[0010]

However, in Japanese Unexamined Patent Application Publication No. 59-229578, a voltage is applied to each color pattern on a belt-shaped image carrier as described above. Since the image carrier is transferred with the needle-shaped electrodes fixed to the respective color patterns facing each other to form an electrostatic image and toner is adhered, the image carrier is fixed to each color pattern on the image carrier. High-precision alignment with the needle electrode is required, and as a result, delicate display is technically difficult as a practical problem even if it is possible in principle, and rough belt running It takes a lot of time and effort to perform the positioning of the fixed needle-shaped electrode with high accuracy, and therefore, there is a disadvantage that productivity is extremely poor.

There is also a method in which a toner is selectively adhered to a belt-shaped dielectric image carrier having no electrodes and a simple stripe pattern of each color in accordance with the pattern to form a color image. However, even with such a technique, similarly, high-precision toner adhesion position accuracy is required for each color pattern.
Due to the use of the belt-shaped image carrier, problems inherent to the belt-shaped image carrier remain.

In this case, the belt-shaped image carrier repeatedly adheres to the surface of the belt-like image carrier due to friction with the drive roller and the support roller by repeating the rotation operation, and a part of the adhered substance. Has the disadvantage of causing a thermal change and impairing its translucency.

[0013]

An object of the present invention is to provide an image display device which can solve the disadvantages of the conventional example, and which can perform clear color display on a large screen with a particularly simple structure and which can be reduced in cost. That is its purpose.

[0014]

According to the present invention, a light-transmitting material is provided.
Translucent image with multiple chromatic pixels on the surface
The image carrier and the pixels of the image carrier are externally input to the pixels.
Non-translucent printing material is selectively attached based on image information
Irradiate the image carrier with the recording / developing device
Backlight.

Further, the image carrier is placed on the side opposite to the recording / developing device side.
Each pixel of the image carrier is formed in a plate shape with pixels arranged on the side
Color is arranged as a regular repeating pattern.
In this pattern, the size of each pixel is regulated in this pattern.
The non-light-transmitting portion is provided regularly and repeatedly, and when the recording / developing device is operated, the recording / developing device and the image carrier are equipped with a relative transfer unit for a developing device that relatively moves in the opposite direction. I am taking it. This aims to achieve the above-mentioned object.

[0016]

First, the image carrier 1 moved to the display position
Starts moving downward for the next image formation. At the timing of the lowering of the image carrier 1, the toner is removed by a predetermined means. In this case, during the process, the developing function of the recording and developing device 4 is set and controlled to be in the halt state.

When the image carrier 1 is lowered, the relative transfer means for the developing device is activated, and the image carrier 1 is controlled to move upward. At the same time, the developing function starts to operate in the recording and developing device 4.

Then, as the image carrier 1 moves, the electrostatic latent image is visualized by the developing unit 17 with the black toner T attached thereto. FIG. 4 shows that black toner is attached to portions other than those located at the green (G).

In this manner, image formation proceeds one after another as the image carrier 1 moves upward. Image carrier 1
Reaches the top, the carrier 1 is illuminated by the backlight 5 to display a color image.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

First, in FIG. 1, reference numeral 1 denotes a plate-shaped translucent image carrier. This plate-shaped translucent image carrier 1 has a regular repeating pattern of pixels of three different colors having translucency, for example, red (R), green (G), and blue (B) and a pixel of each pixel. A non-light-transmitting portion S, which is regularly and repeatedly incorporated in the pattern, is provided on the surface. The plate-shaped translucent image carrier 1 is housed in a case body 2. The case body 2 is provided with a display window 2A on the upper left side of FIG.

In the case body 2, the plate-shaped translucent image carrier 1 is transported in the vertical direction (the direction of symbols A and B) in FIG. 1 and the development is temporarily stopped at the display window 2A. A transfer support means 3 as a dexterous relative transfer means is provided. In the case body 2, a recording / developing device 4 for attaching a non-translucent printing material to the surface of the plate-shaped translucent image carrier 1 on the display window 2A side, and a plate-shaped translucent image carrier 1 from the back side of the image display, and an interface unit 6 for externally inputting control information of the developing operation of the recording and developing unit 4
And is equipped with.

The recording / developing unit 4 applies a non-translucent printing material corresponding to each pixel to the surface of the plate-shaped translucent image carrier 1 based on image information input from the outside via the interface unit 6. It has a function of selectively attaching. Reference numeral 7 denotes a power supply unit for operating the above-described components.

The plate-shaped translucent image carrier 1 is shown in FIGS.
As shown in FIG. 1, a glass substrate 11 serving as a base material, a pattern layer 11A formed on a surface of the glass substrate 11,
An overcoat layer 11B made of a transparent film covering the pattern layer 11A, and a dielectric layer 11C as an electrostatic recording layer made of a transparent film formed on the surface on the opposite side of the overcoat layer 11B. ing.

In the pattern layer 11A, light-transmitting fine red (R), green (G), and blue (B) pixels are regularly arranged repeatedly, and a black non-light-transmitting pixel is interposed between these colors. The active part 11D is formed. This non-translucent portion 11D
In the example of FIG. 2, a thick black line is provided in the vertical direction, and a thin black line is provided in the horizontal direction.

There are various methods for producing a repetitive color pattern on the glass substrate 11, and there are broadly classified organic filters using an organic material as a coloring layer, inorganic filters using an inorganic material, and composite filters using a combination of these. .

As a method for producing an organic filter, a dyeing method,
There are a dispersion method, a printing method, an electrodeposition method and the like, and a method of manufacturing an inorganic filter includes a multilayer interference film method.

The size of each color of red (R), green (G) and blue (B) is about 80 to 200 [μm].
An example of 80 [μm] × 150 [μm] is shown. The interval between the colors is 30 to 50 [μm].

The dielectric layer 11C is formed of a transparent resin layer of PET, polyethylene, polystyrene, polyester or the like having a thickness of 20 to 30 [μm].

Next, an example of the recording and developing device 4 is shown in FIG.

In the recording / developing device 4, a contact type electrostatic head 16 for selectively applying a charge to the surface of the dielectric layer 11C of the plate-shaped translucent image carrier 1 is selectively provided. Developing unit 17 that supplies black toner T, which is a non-translucent printing material, to the surface of dielectric layer 11C of charged plate-shaped translucent image carrier 1.
And a toner remover 18 as a printing material removing means for removing the black toner T attached to the surface of the dielectric layer 11C. Reference numeral 4A indicates a developing device main body case.

The electrostatic head 16 is connected with image data based on image information from the outside via an interface unit 6 and an electrostatic head controller 16A (see FIG. 3).

In the developing section 17, the black toner T is supplied from the black toner storage section 17A to the developing sleeve 17C while being charged by the supply brush 17B, and is supplied to the developing sleeve 17C by the layer thickness regulating member 17C. The layer TS is supplied to the dielectric layer 11C side with the rotation of the developing sleeve 17C.

The output of the developing bias power supply 19 is applied to the developing sleeve 17C, whereby an electric field is formed between the dielectric layer 11C and the developing sleeve bias 17C, and the charged black toner T is transferred.

As the black toner T, a toner having a main resin of about 7 to 12 [μm] of polyester, polystyrene, and styrene-acryl copolymer used in an ordinary electrophotographic process is used. However, since the toner is not heat-fixed or the like, the thermal characteristics do not need to be the same.

The toner removing device 18 includes the rotary removing brush 1
8A and a fixing member 18B for contacting the rotation removing brush 18A and removing the black toner T from the rotation removing brush 18A. The entirety of the toner removing device 18 can be moved toward and away from the plate-shaped translucent image carrier 1 by driving means (not shown). Symbol C indicates the direction of operation. The toner remover 18 is joined to the developing unit 17 by a flexible pipe 18P in order to return the removed black toner T to the developing unit 17.

Further, the backlight 5 shown in FIG. 1 has a structure in which a cold cathode lamp is disposed at both ends as a light source and a transparent acrylic plate is used as a light guide. The plate is covered so that light does not leak. For more efficient and uniform illumination, the light guide plate may be provided with a diffusion treatment, a Fresnel prism, or a multilayer thin plate.

Next, the operation of the above embodiment will be described.

First, the plate-shaped translucent image carrier 1, which has moved to the position facing the display window 3A, starts moving downward for the next image formation. At this time, the recording and developing device 4
The toner remover 18 in the inside has been moved to a position in contact with the surface of the plate-shaped translucent image carrier 1, and moves together with the movement of the plate-shaped translucent image carrier 1. The black toner TS adhered to the upper portion is removed. here,
During this process, the electrostatic head 16 and the developing unit 17 in the recording and developing unit 4 are set and controlled to be in a halt state.

As described above, the plate-shaped translucent image carrier 1
Moves to the bottom of FIG. Next, the plate-shaped translucent image carrier 1 whose surface has been cleaned is switched to upward movement. At the same time, in the recording and developing unit 4, the toner removing unit 18 is separated from the plate-shaped translucent image carrier 1, and the electrostatic head 16 and the developing unit 17 start operating.

The electrostatic head 16 is a plate-shaped translucent image carrier 1
In accordance with the position and size of the regular repetitive pattern, the electrostatic head controller 16A selectively applies a charge to the dielectric layer 11C of the plate-shaped translucent image carrier 1, whereby the outer surface of the dielectric layer 11C is electrostatically charged. A latent image is formed.

Then, as the plate-shaped translucent image carrier 1 moves, the electrostatic latent image is visualized by the developing unit 17 with the black toner T attached thereto. FIG. 4 shows that black toner is attached to portions other than those located at the green (G).

Thus, the plate-shaped translucent image carrier 1
The image formation progresses one after another with the upward movement. When the plate-shaped translucent image carrier 1 reaches the uppermost part, the carrier 1
Is illuminated by the backlight 5 to display a color image.

In the black toner adhesion pattern shown in FIG. 4, only light that has passed through the green pattern by the backlight 5 is seen, and a green display is performed. At the time of displaying an image, a color image is displayed only by supplying power to the backlight 5 alone. Then, a different image can be displayed by repeating the above operation.

Embodiment 2

Next, a second embodiment of the present invention will be described with reference to FIGS.

The second embodiment shown in FIG. 5 to FIG.
The basic configuration unit is almost the same as that of the first embodiment described above, but has a feature in that the recording / developing unit moves and the plate-shaped translucent image carrier is fixed.
Therefore, the entire configuration is simplified as compared with the above-described second embodiment, and the entire display screen is downsized as a whole.

That is, in the second embodiment, a regular repeating pattern of pixels of three different colors having translucency, and a non-translucent pixel regularly and repeatedly incorporated in the pattern of each pixel. A plate-shaped translucent image carrier 21 having a portion on one surface, and a black toner T, which is a non-translucent printing material, corresponding to each pixel based on image information input from the outside. A recording / developing unit 24 for selectively attaching the surface of the non-transmissive image carrier 21 to the surface of the translucent image carrier 21;

Reference numeral 22 denotes a case main body that houses the above-mentioned components. The case main body 22 is provided with a display window 22A at the left of the center in FIG. This display window 22
The plate-shaped translucent image carrier 21 is fixed in the case main body 22 so that the display surface of the plate-shaped translucent image carrier 21 is always located facing A.

The recording / developing device 24 is reciprocated in the direction of arrow A or B in FIG. 5 by the developing device transport means 23 as a relative transport device for the developing device. The developing device transporting means 23 is configured such that its frame is a plate-shaped translucent image carrier 2.
1 is divided into two ends.

The plate-shaped translucent image carrier 21 has a red (R), green (G), and blue (B) pattern superimposed on one surface of a weather-resistant and translucent PET plate 21A. By combining them, the non-translucent black matrix portion 21D of the three-color superimposed portion and the regular red (R), green (G),
A blue (B) repeating pattern 21a is formed. And, also in this case, the overcoat layer 21B is provided on each color pattern.

In this case, there are various methods for producing a color pattern.
Since A is used as the base material of the translucent image carrier 21, the printing method is suitable. And PET board 21A
As such, it can be used as an electrostatic recording layer.

The arrangement of each color pattern is of a triangle type as shown in FIG. This means that black is not a vertical line as compared with the previous mosaic type, and that line is inconspicuous when the image is viewed.

The recording and developing device 24 in the second embodiment
As shown in FIG. 8, in its interior, to the plane of the PET plate 21A of the plate-like light-transmitting image-bearing member 21, an electrostatic head 16 of contact type which performs selective charge application, selective A developing unit 17 for supplying a black toner T as a non-translucent printing material to the surface of the PET plate 21A of the plate-shaped translucent image carrier 21 charged with the toner, and a black toner T adhering to the surface of the plate-shaped PET 21A.
And a toner remover 28 for removing the toner. Reference numeral 28A indicates a developing device main body case.

The same developing unit as that shown in FIG. 4 is used. Also, the toner remover 28
Are a cleaner 29 provided with a cleaning blade 29A by a blade cleaning method and an AC corona discharger 3.
0. The toner removing unit 28 is connected to the developing unit 17 by a flexible pipe 28P, and is configured to be able to move away from and contact the plate-shaped translucent image carrier 21 together with an AC corona discharge unit 30 by a driving unit (not shown). Have been. Reference numeral 30A denotes an AC power supply for driving the AC corona discharge unit 30.

The residual charge on the plate-shaped translucent image carrier 21 after the cleaner operation is effectively removed by the bipolar charge flow from the AC corona discharge unit 30. As the backlight 25, a white EL (electroluminescence) which is a thin and low power consumption light source is used.

Next, the operation of the second embodiment will be described.

First, the recording and developing unit 24 housed below the display window 22A in FIG. 5 starts moving upward. At this time, the toner removing device 28 in the recording and developing device 24
Inner cleaner blade 29A is in contact with the surface of plate-shaped translucent image carrier 21, and an AC voltage is also applied to AC corona discharge unit 30.

With the movement of the recording and developing unit 24, the black toner T attached to the plate-shaped translucent image carrier 21 is removed. During this process, the electrostatic head 16 and the developing unit 17 in the recording and developing device 24 do not operate. While maintaining such a state, the recording and developing device 24 moves to the uppermost portion in the case main body 22.

Next, the operation of the recording and developing unit 24 is switched downward, and at the same time, the cleaner 29 in the toner removing unit 28 is separated from and connected to the plate-shaped translucent image carrier 21, and the AC corona discharge also occurs. Stopped. Instead, the electrostatic head 16 and the developing unit 17 operate .

As the recording / developing device 24 moves downward, an electrostatic latent image is formed and visualized, and image formation proceeds, as in the case of the first embodiment. When the recording and developing device 24 reaches the lowermost position, the plate-shaped translucent image carrier 2
1 is emitted to the backlight 25, whereby a color image is displayed. When displaying a color image, a color image is displayed only by supplying power to the backlight alone. Then, when a different image is displayed next, the above-described operation can be repeated.

Embodiment 3

Next, a third embodiment of the present invention will be described with reference to FIGS.

The third embodiment shown in FIGS. 9 and 10 is substantially the same as the first embodiment as a basic constitution unit, except that a recording / developing unit and a plate-shaped translucent image carrier are used here. Are characterized in that they are configured to move in mutually opposite directions. For this reason, the entire configuration is simplified as compared with the above-described second embodiment, and the speed of switching the display contents is increased as a whole even on the same display screen.

That is, in the third embodiment, a regular repeating pattern of pixels of three different colors having a light-transmitting property and a non-light-transmitting pixel regularly and repeatedly incorporated in the pattern of each pixel. A plate-shaped translucent image carrier 1 having a portion on one side, and a black toner T, which is a non-translucent printing material, inserted into each pixel based on image information input from the outside. The image forming apparatus includes a recording and developing device 34 for selectively adhering to the surface of the optical image carrier 1 and a backlight 5 for irradiating the plate-shaped translucent image carrier 1 from the back surface.

Reference numeral 32 denotes a case main body for accommodating the above components. The case main body 32 is provided with a relatively large display window 32A from the center to the upper part in FIG. The plate-shaped translucent image carrier 1 and the recording / developing device 34 described above are connected to the case body so that the display surface of the plate-shaped translucent image carrier 1 is quickly set facing the display window 32A. 32 are moved in opposite directions.

The recording / developing device 34 is moved in the direction of arrow A or B in FIG. 9 by a developing device transporting means 33A as a relative transporting device for the developing device, and the plate-shaped translucent image carrier 1 is carried as a relative transporting device for the developing device. The body is moved simultaneously in the direction of arrow b or a in FIG. 9 by the body transfer means 33B. The developing device transporting means 33A and the carrier transporting means 33B constitute a developing device relative transporting means. Each of the transfer means 33A and 33B is supported by a frame (not shown) separately provided at both ends of the plate-shaped translucent image carrier 1, and is provided in the directions of arrows A and B (or b, b). (a direction) at the same time.

In FIG. 9, arrows A, a (or B, b)
Indicate the directions in which they move together, arrows A and a indicate directions in the removal mode, and arrows B and b indicate directions in the development mode.

Here, the removal mode is a mode for removing the toner which is a non-translucent printing material adhered to the plate-shaped translucent image carrier 1, and the development mode is a plate-shaped translucent image carrier. This is a mode in which a black toner T, which is a non-translucent printing material, is selectively adhered to the surface of the image carrier 1 according to image information (in accordance with the position and size of the color pattern). In this embodiment, the plate-shaped translucent image carrier 1 is the same as that used in the first embodiment, and the backlight 5, the power supply unit 7 and the interface 6 are also the same as those in the first embodiment. The same ones used are used.

Next, the recording and developing device 34 in the third embodiment is described.
FIG. 10 shows an example. The recording and developing unit 34 in the third embodiment is completely different from the previous two embodiments in that a toner storage unit 36 for storing a black toner T, which is a non-translucent printing material, is used.
A developing sleeve 37 provided in the toner sending section of the toner storage section 36 and having a developing function and a toner removing function, a supply brush 38 provided in the toner storing section 36 and sending out the toner T to the developing sleeve 37 side; At the upper end of the toner storage unit 36 in FIG.
The developing blade 39 is provided in the opening of the developing sleeve 39 to execute the attachment or non-adhesion of the toner T to the developing sleeve 37 according to the entire mode, and the leakage preventing film member 40 provided at the lower end of the developing sleeve 37 in FIG. And a configuration including

The output of the developing bias power supply 42 A or the toner removing bias power supply 42 A is switched and applied to the developing sleeve 37 via the changeover switch 43. The developing blade 39 is formed by alternately arranging conductive portions and insulating portions in the longitudinal direction of the developing sleeve 37, and the conductive portions are controlled by the developing blade applied voltage controller 44 based on image data. A predetermined control voltage is applied.

Here, the developing blade applied voltage controller 44
The mode switching control is performed so that the voltage to be applied to the developing blade 39 when the recording / developing device 34 operates as a toner removing device.

Next, the operation of the third embodiment will be described.

The plate-shaped translucent image carrier 1 has a display window 3 as a whole.
The recording / developing device 34 starts to move upward from a position substantially opposed to 2A, that is, the highest position, and from the lowest position in the case main body 32.

At this time, in the recording and developing unit 34, the output from the removing bias power supply 42B having a polarity opposite to the toner charging polarity is applied to the developing sleeve 37, and the developing blade 39 is switched to the removing mode by mode switching. As a result, a voltage at which toner does not come out on the developing sleeve 37 is applied. Then, the toner adhered to the plate-shaped translucent image carrier 1 is collected by the recording and developing device 34 with each movement.

The plate-shaped translucent image carrier 1 moves to the lowermost part in the case main body 32 in FIG. 9, and the recording and developing device 34 moves to the uppermost part in the case main body 32 in FIG.

Next, the respective moving directions are switched, and at the same time, the power supply applied to the developing sleeve 37 of the recording and developing unit 34 becomes the developing bias power supply 42A.
The mode is also switched to development for application to 7,
The voltage applied to the conductive portion of the developing blade 39 is controlled based on the image data. Then, the plate-shaped translucent image carrier 1
Are moved upward and the recording and developing unit 34 is moved downward, so that the toner is transferred to the plate-shaped translucent carrier in accordance with the position and size of the regular repeating pattern of the plate-shaped translucent image carrier 1. 1 on top.

This operation is performed by the plate-shaped translucent image carrier 1,
The applied voltage of each conductive portion of the developing blade 39 is controlled in accordance with each moving speed of the recording / developing device 34 and the developing sleeve 37, and the electric field between each conductive portion of the developing blade 39 and the developing sleeve 37 is reduced. As a result, toner patterns having different toner thickness characteristics are formed on the developing sleeve 37, and the toner patterns are sequentially attached to the plate-shaped translucent image carrier 1 by the rotation of the developing sleeve 37.

Thus, the plate-shaped translucent image carrier,
As the recording / developing device moves, image formation proceeds on the entire image carrier. When the plate-shaped translucent image carrier reaches the uppermost portion, it is illuminated by the backlight and a color image is displayed. When an image is displayed, a color image is displayed only by supplying power to the backlight alone. Then, to display a different image next, it becomes possible by repeating such an operation.

In addition to the above-described method using the developing blade voltage control, a large number of fine width electrodes are provided on a fixed sleeve with a built-in rotary magroll, and the power supply applied to each electrode is controlled to enable selective toner selection. Layers can also be provided and transported.

Here, the arrangement of the respective colors of the regularly repeated color pattern of the plate-shaped translucent image carriers 1 and 21 used in the above embodiments is, for example, as shown in FIG. Good. Also, as shown in FIG. 12, they may be sequentially and repeatedly arranged in one row.

Further, in each of the above embodiments, the description has been made on the assumption that a color display is formed by combining a plurality of colors. However, only one color may be used as the back color.

In the above-described first and third embodiments, it is long-term to perform cleaning and static elimination not only on the toner-adhered surface side of the plate-shaped translucent image carrier, but also on the backlight-irradiated surface side. This is effective for displaying clear images over a wide range.

In any of the embodiments, the toner removed by removing the adhered toner after the display or before the next different image formation can be used again as a non-translucent stamp material for adhesion. As the backlight, examples of the fluorescent lamp and the EL have been described, but the present invention is not particularly limited thereto, and may include an incandescent lamp or an LED as described above. In the embodiment, the color pattern is “red
Green and blue ", but this may be any other desired color, or any two colors, or even a multicolor pattern such as four or five. Is also good. In the case of the three colors, there is an advantage that a full-color image can be displayed. Also, examples of the non-translucent printing material are black toner and gray toner. However, in the case of a pattern of another color, a toner of another color may of course be used.

Further, the case where the powder toner is used as the non-translucent printing material has been described as an example, but this may be not only the powder toner but also a liquid toner or a high-viscosity toner. The toner conveying method is not limited to the one-component developing method, but may be a two-component developing method. In addition, toner is conductive, insulating, magnetic,
Any non-magnetic or any combination may be used.

Since each of the above embodiments is configured and operated as described above, the following advantages can be obtained.

[0087] Since the regularly repeated color pattern has a non-light-transmitting portion (black matrix portion), it is not necessary to increase the accuracy of the size of the non-light-transmitting printing material at the adhering position. Since the transfer accuracy of the means can be appropriately reduced, the productivity is high.

.. By using the plate-shaped translucent image carriers 1 and 21,
Installation and assembly are easy, the flatness of the image display surface is ensured, and the number of components and cost, as well as the transfer accuracy, are superior in moving the carrier compared to the belt-shaped one, and long-term translucency is maintained. Also, the frequency of deterioration and adhesion of dirt due to rubbing with each support shaft and the like is significantly reduced as compared with the belt-shaped one, and the durability is excellent in this respect.

.. Since the translucent image carriers 1 and 21 are plate-shaped and have a regular repeating pattern having a non-translucent portion,
Transparent image carriers 1, 21 and recording and developing units 4, 24, 34
The image formation can be easily performed only by the relative movement of the image, and the device can be made thinner.Even if the screen becomes large, the color pattern and the toner attaching position and size can be easily adjusted, and high-density image display is possible. There is an advantage that it becomes.

.. The recording and developing units 4, 24, 34 are connected to the plate-shaped image carriers 1, 2,
A color image can be displayed only by moving the image once relative to 1.

.. By providing the toner removing device, the toner, which is a non-translucent printing material, can be used repeatedly, so that the running cost can be significantly reduced.

[0092] By providing the toner removing unit inside the recording and developing units 4, 24 and 34, a new image is formed by one reciprocating operation of the recording and developing units 4, 24 and 34 relative to the plate-shaped translucent image carriers 1, 21. Switching display becomes easy.

[0093]. By being a color pattern having a non-translucent portion, color reproduction and sharpness are superior to a color pattern having no non-translucent portion. Insufficient luminance in image display is sufficient by increasing the power within several percent of the backlight.

[0094] Plate-shaped translucent image carriers 1 and 21 and recording and developing units 4 and 2
Because it is a movement in one direction between 4, 34,
The configuration of the apparatus is also simplified, so that the driving mechanism is merely a one-way reciprocating motion, so that productivity and durability can be improved. . Long-term maintenance of color image display is possible only by supplying power to the backlight, and the running cost can be greatly reduced not only at the time of image formation but also at the time of display.

[0095]

Since the present invention is constructed and functions as described above, according to the present invention, the image carrier is moved to the opposite side of the recording and developing device.
Since it is formed in a plate shape with pixels arranged on the opposite side, installation and assembly
And the flatness of the image display surface is ensured.
In moving the holding body, compared to the belt-shaped
Excellent in number, cost, and transfer accuracy, maintaining long-term transparency
Also, compared with the belt-shaped thing,
Deterioration due to rubbing and frequency of dirt adhesion are also significantly reduced
Therefore, the durability should be greatly improved compared to the conventional example.
In the pattern of each pixel of the image carrier.
The non-light-transmitting part that regulates the size of each pixel
The seal position of the non-translucent printing material
It is no longer necessary to increase the precision of the
Alternatively, the transfer accuracy of the toner attaching means can be appropriately reduced.
High productivity, and also allows non-translucent parts to be regulated
Of brightness in the screen due to repeated installation
Can be supplemented by a backlight,
The developing device and the image carrier are relatively moved in opposite directions.
Equipped with relative transfer means for the imager,
Image formation is easy, and the equipment is thin.
Color pattern and toner adhesion position even on large screens
Position and size are easy to match, enabling high-density image display
It works. As described above, since the plate-shaped translucent image carrier is used and a predetermined image can be switched and displayed by reciprocating the same in the same direction, the structure can be simplified. The size of the light-transmitting image carrier can be greatly improved because the whole device can be significantly reduced in size as compared with the light-transmitting image carrier, and at the same time, the translucent image carrier is not bent. The recording / developing unit can easily cope with even if it is formed freely, so that it is possible to perform clear display on a large screen at low cost .
It is possible to repeatedly use the toner, which is a non-translucent printing material, and therefore, it is possible to provide an unprecedented excellent image display device in which the running cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a pattern of translucent pixels incorporated in the plate-shaped translucent image carrier disclosed in FIG.

FIG. 3 is a partial cross-sectional view showing a part of the plate-shaped translucent image carrier disclosed in FIG.

FIG. 4 is an explanatory diagram showing the configuration and operation of each unit of the recording and developing device disclosed in FIG.

FIG. 5 is a schematic sectional view showing a second embodiment of the present invention.

FIG. 6 is a partial sectional view showing a part of the plate-shaped translucent image carrier disclosed in FIG.

FIG. 7 is an explanatory diagram showing an example of a pattern of translucent pixels incorporated in the plate-shaped translucent image carrier disclosed in FIG.

8 is an explanatory diagram showing a part of a plate-shaped translucent image carrier disclosed in FIG. 5 and a configuration and an operation of each part of a recording / developing device corresponding thereto.

FIG. 9 is a schematic sectional view showing a third embodiment of the present invention.

10 is an explanatory diagram showing a part of the plate-shaped translucent image carrier disclosed in FIG. 5 and the configuration and operation of each part of the recording and developing device corresponding thereto.

FIG. 11 is an explanatory view showing another example of the pattern of the translucent pixels incorporated in the plate-shaped translucent image carrier.

FIG. 12 is an explanatory view showing another example of the pattern of the light-transmitting pixels incorporated in the plate-shaped light-transmitting image carrier.

[Explanation of symbols]

1, 21 plate-shaped translucent image carrier 3 transfer support means as relative transfer means for developing device 4, 24, 34 recording and developing device 5, 25, 35 backlight 11D non-translucent portion 18, 28, 38 removal of printing material Toner removing device 23, 33A Developing device transferring device as relative transferring device for developing device 33B Carrier transferring device as relative transferring device for developing device

Front page continued (51) Int.Cl. ⁶ identifications FI G03G 15/22 103 G03G 21/00 386 21/00 386 578 578 G09F 9/00 356A G09F 9/00 356 H04N 1/29 G H04N 1/29 G03G 15/00 115

Claims (6)

(57) [Claims] 1. It has translucencyImage composed of multiple chromatic colors
Transparent image carrier having a surface provided with silicon, and this image carrier
Based on image information externally input to the pixel
A recording and developing device for selectively adhering a translucent printing material;
A backlight that irradiates the image carrier from the back of the image display
In the image display device provided with Pixels are placed on the image carrier on the side opposite to the recording / developing device side.
Formed in a plate shape arranged, The color of each pixel of the image carrier is regularly and repeatedly patterned.
As well as each image in this pattern.
Regularly repeating the non-translucent part that regulates the size of the element
Provided, When operating the recording and developing device, the recording and developing device and the image
Relative to developing unit that moves the image carrier relatively in the opposite direction
An image display device comprising a transfer means. 2. A pattern of each pixel of the image carrier,
Red, green, Ri regular repeating pattern der color with blue three-color light-transmitting, wherein each color pattern, the image display device according to claim 1, wherein characterized in that arranged in Triangle. 3. The image bearing member is fixedly equipped,
3. The image display device according to claim 1, wherein the relative transfer means for the developing device has a developing device transfer function for transferring and driving the recording and developing device. 4. A fixedly equipped recording and developing device,
3. The image display device according to claim 1, wherein the relative transfer means for the developing device has a carrier transfer function of driving and driving the image carrier. 5. The developing device relative transfer means comprises two sets of transfer means for simultaneously moving the recording and developing device and the image carrier in opposite directions, respectively. The image display device as described in the above. 6. A printing material for removing a non-translucent printing material attached to the image carrier, wherein the printing device is operated by being urged by the relative transfer means for the developing device when the operation of the printing device is stopped. 2. The method according to claim 1, further comprising removing means.
Or the image display device according to 2.