JPH07133031A - Paper transport mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to obtain a paper transport mechanism that allows easy fixing of paper and enables downsizing. [Structure] A stator 2 in which electrodes 5 to 10 are arranged on an insulating support 1 at predetermined intervals, and electrodes 11 to 16 on the insulating support 1.
Is provided at a predetermined interval and is movable relative to the stator 2. The mover 3 includes electrodes 11 to 16 thereof.
And the electrodes 5 of the stator 2 move relative to the stator 2 due to the induced charges between the electrodes 5 and 10 of the stator 3.
The paper 4 is electrostatically adsorbed to the moving element 3 by the electric charges generated in 16 to 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper transport mechanism for attracting and transporting paper by utilizing electrostatic force.

[0002]

2. Description of the Related Art FIG. 18 shows, for example, JP-A-3-152034.
Partial sectional view showing a conventional paper transport mechanism shown in Japanese Patent Publication No.
FIG. 19 is a main configuration diagram including FIG. In the figure,
Reference numeral 30 denotes an endless base belt, which is a semiconductive polymer material 31.
And a mesh material 32. The mesh material 32 is embedded in the semiconductive polymer material 31, and the mesh material 32 is sandwiched between the mesh material 32 and the upper semiconductive polymer material layer 33.
However, the lower semiconductive polymer layer 34 is formed on the other side,
They are integrally connected in the mesh.

Pattern electrodes 35 and 36 are formed on the back surface of the base belt 30, that is, on the surface of the lower semiconductive polymer material layer 34 so as to face each other like comb teeth. 37
Is a tray on which a sheet 4 to be fed is placed. 38
Is a driven roll, 39 is a drive roll for driving the base belt 30, and 40 is a drive power source for the drive roll.

Next, the operation will be described. When a high voltage is applied to the pattern electrode 35 and a low voltage is applied to the pattern electrode 36, a current starts to flow from the pattern electrode 35 toward the pattern electrode 36, and passes through the mesh of the mesh material 34 to the surface of the base belt 30. The current also flows in.
At that time, the paper 4 transported on the surface of the base belt 30 by the transport mechanism is the semiconductive polymer substance 3 on the surface of the base belt.
When it contacts 1, the electric current also starts flowing in the paper 4, passes through the paper 4 from the pattern electrode 35, through the semiconductive polymer layers 34 and 33, and again passes through the semiconductive polymer layers 33 and 3.
A circuit is formed through 4 to the pattern electrode 36, and the paper 4 is electrostatically adsorbed on the base belt 30. Then, the base belt 30 is rotationally driven by the drive roll 39 to convey the electrostatically adsorbed sheet 4.

FIG. 20 shows, for example, Japanese Patent Laid-Open No. 2859/1990.
FIG. 8 is a partial cross-sectional view showing a conventional paper transport mechanism shown in Japanese Patent No. 78, in which 2 is a stator having a plurality of strip electrodes (not shown) in an insulator, and 3 is mounted on the stator 2. The stator 2 is a movable element that is placed and has an insulator layer and a resistor layer.
It is configured to be movable relative to. 41 is paper 4
It is a carrier sheet for sandwiching.

Next, the operation will be described. When a voltage is applied to the strip electrode of the stator 2, electric charges are induced at the boundary between the insulator layer and the resistor layer of the mover 3, and the voltage and the polarity applied to the strip electrode are appropriately switched, whereby the mover is moved. 3 moves relative to the stator 2 together with the paper 4 sandwiched between the carrier sheet and the carrier sheet 41.

[0007]

Since the conventional paper transport mechanism is constructed as described above, it is disclosed in JP-A-3-15203.
In the case of the publication No. 4, a belt and a transport mechanism for driving the belt are required, and the size of the entire apparatus becomes large, and there is a limit to miniaturization. Further, in the case of Japanese Unexamined Patent Publication No. 2-285978, it is necessary to sandwich the paper between carrier sheets each time in order to fix the paper, and there is a problem that the operation becomes complicated and the usability is poor.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a paper transporting mechanism which can easily fix a paper and can be downsized.

[0009]

SUMMARY OF THE INVENTION A paper transport mechanism according to the present invention includes a stator having electrodes arranged on an insulating support at predetermined intervals, and a stator having electrodes arranged on the insulating support at predetermined intervals. A moving element that is relatively movable with respect to the moving element, and the moving element moves relative to the stator by the induced charge between the electrode of the moving element and the electrode of the stator and The paper is electrostatically attracted to the moving element by the generated charge.

Further, a stator in which electrodes are arranged at a predetermined interval on an insulating support, and a first electrode is arranged at a predetermined interval on the insulating support, and a first electrode is arranged closer to the stator than the first electrode. A moving element which is provided with two electrodes arranged at a predetermined interval and is movable relative to the stator, and the moving element is induced by an electric charge between the second electrode and the electrode of the stator; On the other hand, the paper is electrostatically attracted to the moving element by the electric charge generated in the first electrode while moving relative to the moving element.

Further, in place of the second electrode of the mover, a high resistance layer of 10 ¹² to 10 ¹⁵ Ω / □ is provided on the stator side of the mover.

Further, a plurality of moving elements are formed, and each of these moving elements moves alternately in the forward and reverse directions relative to the paper conveying direction, relative to the stator, and each moving element moves in the positive direction. In this case, a voltage is applied to the first electrode to electrostatically adsorb the paper, and when moving in the opposite direction, no voltage is applied to the first electrode and the paper is not electrostatically adsorbed. .

The electrode of the mover or the first or second electrode
The electrode or the first electrode or the high resistance layer is provided only at both end portions in the direction of relative movement with the stator.

Further, the stator and the mover are transparent bodies.

[0015]

In the paper transport mechanism according to the present invention, the mover moves relative to the stator by applying the induced charge between the electrode of the mover and the electrode of the stator and is applied to the electrode of this mover. An electrostatic force is generated on the surface of the mover by the applied voltage, and the paper is electrostatically attracted to the mover.

When a voltage is applied to the first electrode of the mover, an electrostatic force is generated on the surface of the mover to electrostatically attract the paper to the mover, and the second electrode and the electrode of the stator The mover moves relative to the stator by generating induced charges between them.

Further, instead of the second electrode, an induced charge is generated between the electrode of the stator to which a voltage is applied by the high resistance layer provided on the stator side of the slider, and the mover acts as the stator. Move relative to.

Further, a plurality of moving elements move in various directions in the forward and reverse directions of the paper carrying direction, and when moving in the positive direction, a voltage is applied to the first electrode and the moving direction moves in the reverse direction. In that case, by not applying a voltage to the first electrode, the paper is electrostatically attracted to the moving element that moves in the positive direction one after another,
Move in the forward direction.

Further, the paper is electrostatically adsorbed to the mover by the electrodes or the high resistance layers provided at both ends of the mover, and the mover is moved relative to the stator due to the induced charge between the mover and the stator. Move relative to each other.

Further, the information on the paper electrostatically attracted to the moving element by the transparent fixing element and moving element can be read through these fixing element and moving element.

[0021]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are conceptual views of a main part of a paper transport mechanism of the present invention, in which 1 is an insulating support, 2 is a stator,
Reference numeral 3 is a movable element which is relatively movable on the stator 2, 4 is paper to be conveyed, 5 to 16 are strip electrodes, 17 to 19 are stator electrode electric wires, and 20 to 22 are movable electrode electric wires. less than,
Details of these components will be described.

The stator 2 is composed of an insulating support 1 and a strip electrode 5-1.
0 is arranged at a predetermined interval, and the mover 3 is formed by arranging strip electrodes 11 to 16 on the insulating support 1 at a predetermined interval. Here, the insulating support 1 is composed of a film or sheet made of an insulating material, and the insulating material is not particularly limited, and ceramics or various resins having good insulating properties can be used. As a concrete example of the insulating resin,
Epoxy resin, polyimide resin, polyester resin, polypropylene resin, polyvinylidene chloride resin, polystyrene resin, polyamide resin, polyvinyl chloride resin, polyethylene resin, polyvinyl alcohol-based resin and the like, and preferred insulating resin is polyimide resin, polyester It is a resin.

Band-shaped electrodes 5-1 provided on the insulating support 1.
6 may be arranged on the surface of the insulating support or may be embedded inside the insulating support. In order to improve the insulating properties of the strip electrodes 5 to 16, an insulating layer is formed on the surface of the insulating support 1. Then
It is preferable to embed an electrode between the insulating support 1 and the insulating layer. For embedding the electrode, a method of applying an insulating synthetic resin, a method of laminating an insulating synthetic resin film, and the like can be mentioned, and it is also possible to use a combination of each of these methods as appropriate.

The intervals between the strip electrodes 5 to 10 and 11 to 16 are not particularly limited as long as they maintain a predetermined interval, but they are usually 0.1 to 2.0 mm, which is equivalent to that of the electrostatic actuator. In order to improve driving performance such as generated force and driving voltage, it is desirable to make the electrode spacing finer. Further, in the present embodiment, the usual strip electrodes are used as the electrodes 5 to 16, but dot type electrodes may be used. Further, the electrodes 5 to 10 on the side of the stator 2 basically have a three-phase structure as shown in the drawing, but the invention is not particularly limited to this.
It may have an n-phase (where n is a positive number) structure.

The voltage waveform applied to the strip electrodes 5 to 16 may be a rectangular wave, a sine wave, or the like. Further, the method for forming the electrode is not particularly limited, but the screen printing method is inexpensive and preferable. In this case, the conductive ink as the electrode material is used after being adjusted to an appropriate viscosity so as to fit the screen mesh.

By using the above-described method for producing the stator 2 and the mover 3, for example, a polyester film of 100 μm is used for the insulating support 1, and silver conductive particles are used for the strip electrodes 5-16. Is screen-printed to form an electrode pitch of 400 μm (dudy 50%).
The strip-shaped electrodes 5 to 16 having a phase structure are formed by through-hole processing, which is a known manufacturing technique used for printed circuit boards and the like, and the strip-shaped electrode surface is overcoated with a resin having high insulation strength to improve the withstand voltage. To do.

Next, the operation will be described. The paper 4 is placed on the moving element 3, and for example, no voltage is applied to the electrodes 13 and 16 of the moving element 3, a voltage having a positive potential is applied to the electrodes 12 and 15, and − to the electrodes 11 and 14. When a voltage having a potential of is applied, the electrodes 12 to 11 and the electrode 15 are passed through the paper 4.
The current tries to flow from 14 to 14. As a result, an induction charge is generated on the normally conductive paper 4, and the paper 4 is electrostatically attracted to the moving element 3.

After the sheet 4 is electrostatically attracted to the moving element 3, the electrode 5 of the stator 2 is +, the electrode 6 is −, the electrode 7 is +, and so on. When the voltages are applied in this order, the same sign charges of the stator 2 and the mover 3 face each other as shown in FIG. 3, so that they repel each other, and due to the action of the attractive force between the electrodes of different signs, FIG. Mover 3 as shown
Moves 1 pitch to the right on the stator 2 while electrostatically adsorbing the paper 4.

Thereafter, the voltage applied to the stator 2 is changed to +-++
-+ ..., +++-++ -...,-++-++ ...
By switching in this order, the mover 3 and the sheet 4 electrostatically attracted to the mover 3 move in a predetermined transport direction. At this time, the voltage applied to the stator 2 and the mover 3 may be, for example, ± 600V. As described above, if the sheet 4 is electrostatically attracted to the moving element 3 and the voltage supplied to the electrostatic film is controlled, the sheet can be conveyed without using a belt and a mechanical mechanism.

Example 2. FIG. 5 is a conceptual diagram of a main part when an image reading device is configured by using the paper transport mechanism having the above-described configuration. For example, in a device having a function of reading information on paper, such as a FAX or a copying machine. Is what is used. Therefore, the constituent elements not shown are the same as those in the conventionally known FAX and copier, and the description thereof will be omitted. In the figure, 23 is an image sensor for reading image information,
The focus is set on the upper surface of the moving element 3 (that is, the contact surface of the moving element 3 with the sheet 4).

The stator 2, the mover 3, the sheet 4 and the like are the same as those in the first embodiment, but the electrodes 5 to 10 of the stator 2 are the same.
The electrodes 11 to 16 of the moving element 3 are made of a colorless and transparent electrode material such as indium tin oxide monoxide (abbreviated as ITO), for example, polyethylene terephthalate (abbreviated as PE).
IT on a film made of colorless and transparent insulating material such as T)
The film in which the O layers are laminated is subjected to etching treatment to form transparent electrodes on the stator 2 and the mover 3. And
The thickness (distance) from the lower surface of the stator 2 (that is, the surface of the stator 2 on the image sensor 23 side) to the upper surface of the mover 3 is substantially constant, and the image sensor 23 removes the stator 2 and the mover 3 from each other. It is arranged at a position facing the sheet 4 with the sheet sandwiched therebetween.

Next, the operation will be described. The sheet 4 is electrostatically attracted to the surface of the moving element 3 by the same operation as in the first embodiment. The sheet 4 is brought into a state of being in close contact with the mover 3 by the electrostatic force. The mover 3 moves on the stator 2 by the same operation as in the first embodiment, and also moves relative to the image sensor 23. At this time, the image sensor 23 reads the information on the sheet surface of the sheet 4 on the side of the moving element 2 through the colorless and transparent stator 2 and the moving element 3. The subsequent processing flow of the image information read by the image sensor 23 is the same as that of the conventional image reading apparatus, and the processing in the FAX or the copying machine is also the same as that of the conventional one.

With this structure, the paper 4
Since the sheet is electrostatically attracted to the moving element 3, the sheet 4 does not float. Therefore, in the case of an image reading apparatus using a perfect contact type image sensor that can be downsized but has a shallow depth of focus, conventionally, there is a problem in that the paper is slightly lifted to defocus and the image quality is significantly deteriorated. However, such a problem can be solved by using the configuration of the present invention. That is, according to the image reading apparatus adopting the paper conveying mechanism of the present invention, the paper can be conveyed without using a belt or a mechanical mechanism, the entire apparatus can be downsized, and the electrostatic force is used. Even if the perfect contact type image sensor with a shallow depth of focus is used, the image quality does not deteriorate, and further downsizing can be achieved.

Example 3. FIG. 6 is a conceptual view of a main part of another embodiment of the paper carrying mechanism according to the present invention. In the drawing, the same reference numerals as those in the first embodiment indicate the same or corresponding parts. In the figure, 11a is a moving element 3 and a sheet 4
A first electrode 11 for generating an electrostatic force for electrostatically adsorbing
Reference numeral b is a second electrode for generating an induced charge with the electrode 5'of the stator 2.

Next, the operation will be described. When the sheet 4 is placed on the moving element 3 and, for example, a + voltage is applied to the first electrode 11a of the moving element 3 and a − voltage is applied to the adjacent first electrode, the first electrode passes through the sheet 4. An electric current tries to flow from 11a to the adjacent first electrode. As a result, an induction charge is generated on the normally conductive paper 4, and the paper 4 is electrostatically attracted to the moving element 3.

Further, the sheet 4 is moved by the above-mentioned operation to the moving element 3
To the second electrode 11b of the moving element 3 after being electrostatically adsorbed by
Voltage is applied to the adjacent second electrode, no voltage is applied to the adjacent second electrode, and a negative electric charge is applied to the adjacent second electrode. 2 electrodes-,
Further, the second electrode 7 adjacent to the second electrode 7 is made to be the same as that of the first embodiment like +, and the voltage is appropriately switched, so that the stator 2
By using the repulsion between the charges of the same sign of the moving element 3 and the attraction of the electrodes of the different sign, the sheet 4 can be moved on the stator 2 while being electrostatically attracted.

As described above, by separately providing the first electrode for electrostatically adsorbing the sheet 4 on the moving element 3 and the second electrode for moving the moving element 3, each of them is unique. It becomes controllable, and compared with the case of the first embodiment, the paper 4
It becomes possible to further increase the electrostatic force for electrostatically adsorbing. In this embodiment, the voltage can be switched not by the electrode on the side of the stator 2 but by the second electrode on the side of the mover 3. Further, it can be applied to the image reading apparatus of the second embodiment.

Example 4. FIG. 7 is a conceptual view of a main part of another embodiment of the paper carrying mechanism according to the present invention. In the drawing, the same reference numerals as those in the first embodiment indicate the same or corresponding parts. In the figure, 2a and 2b are stators, and the structure thereof is the same as that of the first embodiment. 3a, 3
Reference characters b are movable elements relative to the stators 2a and 2b, respectively, and the structure thereof is the same as that of the second embodiment. 17 to 19 are stator electrode electric wires of the stator 2a, 25
Numerals 27 are stator electrode electric wires of the stator 2b.

The operation of the paper transport mechanism constructed as described above will be described in the order shown in FIGS. In FIG.
Electric wires (17, 18, 19) of the stators 2a, 2b, (2
5, 26, 27) respectively (-, +,-), (+,-,
+) Voltage is applied. Then, (+, −, on the (first electrode 11a / second electrode 11b)) of the movers 3a and 3b.
When the voltages of 0/0, +,-) and (0, 0, 0 / +,-, 0) are applied, the mover 3a moves leftward and the mover 3b moves rightward. At that time, the sheet 4 is electrostatically attracted to the moving element 3a, but is not electrostatically attracted to the moving element 3b. As a result, the sheet 4 moves leftward as shown in FIG.

By the above-mentioned operation, the sheet 4 is moved leftward as an electrode as shown in FIG. 9 by a predetermined pitch, and then the electric wires (17, 18, 19) of the stators 2a, 2b,
(25, 26, 27) include (+,-, +), (-, +,
A voltage of − is applied, and (0, 0, 0 / +, to the (first electrode 11a / second electrode 11b) of the movers 3a and 3b).
When the voltages of −, 0) and (+, −, 0/0, +, −) are applied, the mover 3a moves rightward and the mover 3b moves leftward this time. At that time, the electrostatic attraction between the sheet 4 and the moving element 3a is released, and the sheet 4 and the moving element 3b are electrostatically attracted, so that the sheet 4 moves leftward.

By repeating such an operation, the moving element 3 for electrostatically attracting the sheet 4 is appropriately switched, and the moving element is alternately moved in the forward and reverse directions of the sheet conveying direction, whereby the sheet 4 is moved only in the predetermined direction. It becomes possible to carry. As a result, the moving range of the mover 3 can be narrowed, and the paper can be conveyed in a smaller space. In the above embodiment, the case where the number of moving elements is two has been described as an example, but the number of moving elements is not limited to two and may be two or more.

In addition, as shown in FIG.
The pair b may be a comb-shaped set, and the adjacent ends of the plurality of moving elements may be formed in such a fitted shape. With such a structure, it is possible to prevent, for example, the end portion of the sheet 4 from falling between the moving elements 3a and 3b. In addition, the example of the present example
In the case of applying to the image reading apparatus, the paper 4 is always held at the height of the upper surface of the moving element, so that it is particularly effective when using a perfect contact type image sensor having a shallow depth of focus.

Example 5. FIG. 11 is a conceptual view of a main part of another embodiment of the paper carrying mechanism according to the present invention. In the drawing, the same reference numerals as those in the fourth embodiment indicate the same or corresponding parts. In the figure, 24 is a resistor layer such as an antistatic agent having a weak antistatic effect, which is applied to the surface of the insulating support 1 of the moving elements 3a and 3b so that the surface resistance is about 10 ¹⁴ Ω / □. It is provided instead of the 4th 2nd electrode 11b. The surface resistance of the resistor layer 24 is practically
It may be about 10 ¹² to 10 ¹⁵ Ω / □.

The operation of the paper transport mechanism configured as described above is the same as that of the fourth embodiment, and the induced charges between the resistor layer 24 and the electrodes of the stator 2 are used to move the movers 3a and 3b. Move in a given direction. Thus, the resistor layer 24 plays the role of the second electrode. With such a configuration, the mover can be made thinner than in the case of the third embodiment. The resistor layer 24 can be applied to the first to third embodiments, and in any case, the effect that the moving element can be made thinner can be obtained.

Example 6. FIG. 12 is a conceptual view of a main part of another embodiment of the paper transport mechanism according to the present invention. In the drawing, the same reference numerals as those in the first embodiment indicate the same or corresponding parts. In the figure, the mover 3 has electrodes only at both ends in the plane of movement of the mover with respect to the stator 2.

Even with such a configuration, if the voltage applied to each electrode of the mover 3 and the stator 2 is large, the first embodiment
Similarly to the above, the sheet 4 can be electrostatically adsorbed onto the moving element 3 and conveyed, and the process of creating the moving element becomes easier than in the case of the first embodiment. The configuration of this embodiment is the same as that of the first embodiment.
It is applicable to ~ 5.

Example 7. By the way, at the 1st Annual Meeting of the Institute of Electrical Engineers of Japan, presented by Professor Toshiro Higuchi of the University of Tokyo, "Prototype of Electrostatic Film Actuator with Electrodes on Stator / Mover"
5) ”principle. The principle is that the distance between the electrode 4 pitch of the mover and the distance between the electrode 3 pitch of the stator are equalized (hereinafter, the distance between the electrode 3 pitch of this stator is u), and the stator and the mover are An experiment was conducted to shift the voltage pattern in the same direction, but the repulsive force in the vertical direction and the driving force in the right direction act on the mover, but as the mover moves to the right, the repulsive force decreases and the frictional force increases. Therefore, as a result, an experimental result that the mover moved only up to u / 12 was obtained (see FIG. 14). ].

It should be noted that in the presentation of the same principle, there is no mention of conveying paper by electrostatically adhering the paper to the moving element. FIG. 13 is a conceptual view of the essential parts showing an embodiment of a paper transport mechanism incorporating the above principle into the present invention. In the figure,
The electrodes of the mover 3 are made into four phases, the electrodes of the stator 2 are made into three phases,
The electrode 4 pitch distance of the moving element 3 and the electrode 3 pitch distance of the stator 2 are configured to be equal.

With such a structure, if the sheet 4 is electrostatically attracted to the moving element 3 by the same operation as that of the first embodiment, the sheet can be conveyed at a finer pitch than the electrode 1 pitch of the stator 2. Thus, the sheet 4 can be conveyed at a finer pitch. According to the present embodiment, the length of one electrode pitch that can be produced by the current manufacturing technology is at least 2
Considering that it is about 00 μm, for example, 8
It is very suitable for application to a fax, a moving original type image reading unit of a scanner, etc., which requires a paper conveyance accuracy of about 0 μm.

It is possible to apply the configuration of the present embodiment to the above-mentioned embodiment, and particularly when it is applied to the image reading apparatus as in the second embodiment, the paper feeding accuracy is high as described above, and therefore the accuracy of the paper feeding is high. There is an effect that a good image reading device can be obtained.

Example 8. FIG. 15 is a conceptual view of a main part of another embodiment of the paper carrying mechanism according to the present invention. In the figure, the same reference numerals as those in the first embodiment indicate the same or corresponding parts. The feature of this embodiment is that the stator 2 is formed in a semicircular shape, the strip electrodes are formed in a radial shape, and the moving element 3 is formed in a strip shape (or a fan shape). Even with such a configuration, the same effect as that of the above embodiment can be obtained.
In addition, although the inventions shown in the embodiments 1 to 8 have been described by taking as an example the case where the electrodes of the mover have three phases, the invention is not limited to this, and various combinations of the number of phases are possible. is there. Further, the present invention is not limited to the above embodiments unless the gist thereof is changed.

[0052]

As described above, according to the present invention, the stator in which the electrodes are arranged at a predetermined interval on the insulating support, and the stator in which the electrodes are arranged at a predetermined interval are provided. And a charge generated in the electrode of the mover, which is relatively movable with respect to the stator due to an induced charge between the electrode of the mover and the electrode of the stator. Thus, the paper is electrostatically attracted to the moving element, so that the fixing operation of the paper to the moving element is facilitated and the device can be downsized.

Further, a stator in which electrodes are arranged on the insulating support at a predetermined interval, and a first electrode is arranged on the insulating support at a predetermined interval, and a first electrode is arranged closer to the stator than the first electrode. A moving element which is provided with two electrodes arranged at a predetermined interval and is movable relative to the stator, and the moving element is induced by an electric charge between the second electrode and the electrode of the stator; Since the paper is electrostatically attracted to the moving element by the electric charge generated in the first electrode while being relatively moved with respect to the above, it is possible to further increase the electrostatic force for electrostatically attracting the paper. can get.

Further, instead of the second electrode of the mover, a high resistance layer of 10 ¹² to 10 ¹⁵ Ω / □ is provided on the stator side of the mover, so that the mover can be made thinner. Is obtained.

Further, a plurality of moving elements are formed, and each of these moving elements moves in the forward and reverse directions different from each other and alternately moves relative to the stator, and each moving element moves in the positive direction. In this case, a voltage is applied to the first electrode to electrostatically adsorb the paper, and when moving in the opposite direction, no voltage is applied to the first electrode and the paper is not electrostatically adsorbed. The moving space of the child can be further reduced, and the device can be downsized.

Also, the electrode of the mover or the first or second
The electrode, the first electrode, or the high resistance layer is provided only at both end portions in the surface in the direction of relative movement with the stator, so that the structure of the mechanism is simplified and the effect of facilitating the production is obtained.

Further, since the stator and the mover are made of transparent bodies, the information on the paper can be read through the stator and the mover, and when incorporated in an image reading device or the like, the entire device can be downsized. The effect is obtained.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a paper carrying device according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a paper transport device according to the first embodiment of the present invention.

FIG. 3 is a diagram showing the operating principle of the paper transporting apparatus in the first embodiment of the present invention.

FIG. 4 is a diagram showing an operation principle of the paper transporting device in the embodiment 1 of the invention.

FIG. 5 is a schematic cross-sectional view showing a paper conveyance mechanism and an image reading apparatus using the same according to the second embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view showing a paper carrying device according to a third embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view showing a paper carrying device according to a fourth embodiment of the present invention.

FIG. 8 is a diagram showing an operation principle of a paper carrying device according to a fourth embodiment of the invention.

FIG. 9 is a diagram showing an operation principle of a paper carrying device according to a fourth embodiment of the invention.

FIG. 10 is a schematic plan view showing a mover of a paper carrying device according to Embodiment 4 of the present invention.

FIG. 11 is a schematic cross-sectional view showing a paper carrying device according to a fifth embodiment of the invention.

FIG. 12 is a schematic cross-sectional view showing a paper carrying device in embodiment 6 of the present invention.

FIG. 13 is a schematic cross-sectional view showing a paper carrying device according to a seventh embodiment of the present invention.

FIG. 14 is a diagram showing the operating principle of the electrostatic actuator according to the seventh embodiment of the present invention.

FIG. 15 is a schematic top view showing a paper carrying device according to an eighth embodiment of the present invention.

FIG. 16 is a schematic top view showing a paper carrying device according to an eighth embodiment of the present invention.

FIG. 17 is a schematic top view showing a paper carrying device according to an eighth embodiment of the present invention.

FIG. 18 is a schematic cross-sectional view showing a conventional paper transport device.

FIG. 19 is a configuration diagram showing a conventional paper transport device.

FIG. 20 is a schematic cross-sectional view showing a conventional paper transport device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating support 2 Stator 3 Moving element 4 Paper 5-16 Strip electrode 11a 1st electrode 11b 2nd electrode 23 Image sensor 24 Resistor layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Yamamoto 1000 Kamoshida-cho, Midori-ku, Yokohama Mitsubishi Chemical Co., Ltd. Research Institute (72) Inventor Yoshio Inoue 5-1-1, Ofuna, Kamakura Mitsubishi Electric Corporation Personal Information Equipment Development Laboratory (72) Inventor Yoshihiro Nagata 5-1-1 Ofuna, Kamakura City Mitsubishi Electric Corporation Personal Information Equipment Development Laboratory

Claims (6)

[Claims] 1. A stator having electrodes arranged on an insulating support at predetermined intervals, and a mover having electrodes arranged on the insulating support at predetermined intervals and movable relative to the stator. Equipped with
The mover moves relative to the stator due to the induced charge between the electrode of the mover and the electrode of the stator, and the electric charge generated in the electrode of the mover electrostatically moves the paper to the mover. A paper transport mechanism characterized by being configured to adsorb. 2. A stator in which electrodes are arranged on an insulating support at a predetermined interval, and a first electrode is arranged on an insulating support at a predetermined interval, and a first electrode is located closer to the stator than the first electrode. A moving member that is movable relative to the stator and that has two electrodes arranged at a predetermined interval, and the moving member has an induced charge between the second electrode and the electrode of the stator. The paper transport mechanism is characterized in that the paper is electrostatically attracted to the moving element by the electric charge generated in the first electrode while moving relative to the stator. 3. A high resistance layer of 10 ¹² to 10 ¹⁵ Ω / □ is provided on the stator side of the mover instead of the second electrode of the mover. Paper transport mechanism. 4. A plurality of moving elements are provided, and each of these moving elements moves alternately in the forward and reverse directions relative to the paper conveyance direction and relatively alternately with the stator, and each moving element moves in the positive direction. Voltage is applied to the first electrode to electrostatically adsorb the paper, and when moving in the opposite direction, no voltage is applied to the first electrode and the paper is not electrostatically adsorbed. The paper transport mechanism according to claim 2 or 3, characterized in that. 5. The electrode of the mover, the first or second electrode, the first electrode, or the high resistance layer is provided only at both ends in a relative movement direction surface with respect to the stator. The paper transport mechanism according to any one of claims 1 to 4, wherein: 6. The paper conveying apparatus according to claim 1, wherein the stator and the mover are transparent bodies.