JPH1016486A - Electronic blackboard and white board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic blackboard for effectively rising a space in a room even when an OHP or a liquid crystal projector for projecting a projecting image is used. SOLUTION: A sheet 10 in which a writing surface 15 to be written with an image and a projecting surface 16 to be projected with a projecting image are disposed in parallel is formed. The sheet 10 is disposed in a body frame 1 so that a part of the sheet 10 is exposed from an opening by using the frame 1 formed with the opening for exposing the part of the sheet 10, and the sheet 10 is fed. Accordingly, the sheet 10 is fed to selectively switch the state that the surface 1 is exposed from the opening 4 and the state that the surface 16 is exposed from the opening 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic blackboard and a whiteboard.

[0002]

2. Description of the Related Art An electronic blackboard or whiteboard has a writing surface on which an image is written. In a whiteboard, at least one surface is a writing surface. In an electronic blackboard, a part of a sheet exposed from an opening formed in a frame is a writing surface. The writing surface is formed such that the image written by the marker is easily erased.

[0003] Such electronic blackboards and whiteboards are
Used to show images such as tables, graphs or text.
At this time, an image such as a table, a graph, or a character is written on the writing surface.

The electronic blackboard is provided with a scanner for reading an image written on a writing surface, and a printer for printing an image on a sheet based on image data read by the scanner. Therefore, on the electronic blackboard,
When the user desires to copy the image written on the writing surface onto paper, the image written on the writing surface is read by a scanner, image data is output from the scanner, and a printer is executed based on the image data. Prints the image on the sheet, and copies the image on the writing surface onto the sheet.

[0005]

The above-described electronic blackboard or whiteboard may be used for keeping the minutes of a meeting or for supplementing the contents of remarks during the meeting. In particular, when an electronic blackboard is used to record the minutes of a meeting, the image written on the writing surface can be copied on paper, so that it is not necessary to copy the minutes of the meeting on paper.

[0006] At a meeting, drawings such as storyboards are sometimes used to supplement the contents of remarks. At this time, if a drawing is written on an electronic blackboard or a whiteboard, it takes time, and the progress of the meeting is delayed.
On the other hand, an OHP or a liquid crystal projector that projects images such as drawings and characters may be used in a meeting. OH
In the case of using a P or a liquid crystal projector, images such as drawings and characters can be prepared in advance, so that the progress of the conference is smooth.

However, when an OHP or a liquid crystal projector is used, it is necessary to prepare a projection sheet on which a projected image can be well projected. The projection sheet has a rough surface so as to reflect the light applied to the projection sheet in all directions. Such a projection sheet,
It is arranged in a room where an OHP or a liquid crystal projector is used. Therefore, when the electronic blackboard or whiteboard and the OHP or liquid crystal projector are used in the same room, the projection sheet and the electronic blackboard or whiteboard are arranged in the same room. For this reason, the indoor space is reduced.

[0008]

According to the first aspect of the present invention,
A sheet having a writing surface on which an image is written, having an opening exposing a part of the sheet, feeding the sheet to the opening, reading an image written on the writing surface, In an electronic blackboard for copying an image on a sheet based on read image data, the sheet includes:
The writing surface and a projection surface on which the projection image is projected;
The writing surface and the projection surface are arranged side by side in the sheet feeding direction, and the writing surface or the projection surface is exposed from the opening. Therefore, when the sheet is fed, the writing surface is exposed from the opening,
The state in which the projection surface is exposed from the opening is selectively switched.

According to a second aspect of the present invention, there is provided a whiteboard provided with a writing surface on which an image is written, the writing surface being rotatably supported about a horizontal axis as a center of rotation. The projection plane on which the projection image is projected. Therefore, by rotating the horizontal axis by 180 degrees about the center of rotation, the state in which the writing surface is arranged on the front side and the state in which the projection surface is arranged on the front side can be selectively switched.

According to a third aspect of the present invention, a board on which a writing surface on which an image is written and a projection surface on which a projection image is projected are integrally formed, and the board is rotatable about a horizontal axis as a rotation center. A scanner that is provided movably in a direction parallel to the writing surface, reads an image written on the writing surface, and forms an image on a sheet based on image data read by the scanner. And a printer that prints the image. Therefore, a writing surface and a projection surface are formed on the front and back of the board, and the board is rotatably supported by the support portion about the horizontal axis as a center of rotation.
By rotating the board 180 degrees about the horizontal axis as the center of rotation, a state in which the writing surface is disposed on the front side and a state in which the projection surface is disposed on the front side are selectively switched. If the user desires to copy the image written on the writing surface, the scanner moves in a direction parallel to the writing surface,
The image on the writing surface is read by the scanner, and the printer prints the image on paper based on the image data read by the scanner. Thus, the image written on the writing surface is copied onto the sheet.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic blackboard according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a perspective view showing the electronic blackboard of the present embodiment. As shown in FIG. 2, the main body frame 1 of the electronic blackboard is supported by a pair of stands 2. A printer 3 is mounted below the main body frame 1.

An opening 4 is provided at the front of the main body frame 1.
Are formed. An operation panel 5 is arranged on the right side of the opening 4. A receiving portion 7 on which a writing instrument such as a marker 6 is placed is formed below the opening 4.

As shown in FIG. 1, a driving roller 8 and a driven roller 9 are disposed at both left and right ends in the main body frame 1. An endless sheet 10 is stretched over these rollers 8 and 9. A writing board 11 that is in contact with the sheet 10 on the opening 4 side is disposed on the inner peripheral portion of the sheet 10. This writing board 11
Supports the sheet 10 and maintains the flatness of the sheet 10 when an image is written on the sheet 10 by a user. A sheet feed motor (not shown) is connected to the drive roller 8. A scanner (not shown) is provided in the main body frame 1.

The sheet 10 is arranged such that a part of the sheet 10 is exposed from the opening 4. The sheet 10 includes a writing sheet 12 and a projection sheet 13. These writing sheet 12 and projection sheet 13
Is a size corresponding to a half circumference of the sheet 10. The writing sheet 12 and the projection sheet 13 are bonded to each other by an adhesive portion 14.
It is glued. The outer peripheral surface of the writing sheet 12 is hard-coated so that an image written by the marker 6 can be easily erased. When the writing sheet 12 is exposed from the opening 4, the opening 4
The portion exposed from the surface becomes the writing surface 15. The writing surface 15 is a surface on which images such as graphs, drawings, and characters are written. The outer peripheral surface of the projection sheet 13 is formed to have a rough surface so as to reflect the light applied to the projection sheet 13 in all directions. When the projection sheet 13 is exposed from the opening 4, a portion exposed from the opening 4 becomes a projection surface 16. The projection surface 16 is a surface on which a projection image is projected by an OHP or a liquid crystal projector (not shown).

The scanner is arranged behind the driving roller 8 so as to face the outer peripheral surface of the sheet 10 and reads an image written on the writing surface 15.
Output image data. The scanner is provided with a light source and a CCD (not shown). The light source irradiates the writing surface 15 with light. The CCD has the writing surface 1
5 is photoelectrically converted to output image data.

The printer 3 prints an image on a sheet (not shown) based on the image data output from the scanner. The printer 3 includes a paper transport unit (not shown) and a thermal print head (THP).
ad). The paper transport unit includes the TH
The sheet is transported to P. The THP prints an image on a sheet based on image data.

The operation panel 5 includes a display unit 17, a sheet feed key 18, a plus key 19, and a minus key 2.
0 and a copy start key 21 are arranged in order from the top. The various keys 18, 19, 20, 21 are appropriately operated by the user. The sheet feed key 18
Is a key for feeding the sheet 10. The copy start key 21 is a key for starting a copying operation for copying an image on the writing surface 15 onto paper. The plus key 19 and the minus key 2
Numeral 0 is a key for setting the number of sheets (the number of copies) on which the image on the writing surface 15 is copied during the copying operation.

In such a configuration, usually, the sheet 10 is arranged so that the writing sheet 12 is exposed from the opening 4, and the writing surface 15 is exposed from the opening 4. At this time, the user writes the image on the writing surface 15 to display an image such as a graph, a drawing, or a character. Then, when the user desires to copy the image written on the writing surface 15 onto a sheet, the user presses the copy start key 21. Then, the sheet feed motor is driven, the drive roller 8 rotates, and the sheet 10 is fed from right to left when viewed from the opening 4 side. Then, the image on the writing surface 15 is read by the scanner, the image data is output from the scanner, and the image is printed on paper by the printer 3 based on the image data. Thus, the image on the writing surface 15 is copied on the sheet. At this time, the number of rotations of the driving roller 8 is counted, and it is determined whether or not the sheet 10 has made one rotation based on the counted number of rotations. And sheet 10
Is completed, the sheet feed motor stops, and the sheet 10 stops. Thereby, the sheet 10 is arranged so that the writing sheet 12 is again exposed from the opening 4, and the writing surface 15 is exposed from the opening 4.

When copying the image on the writing surface 15 onto a plurality of sheets, the user presses the plus key 19 and the minus key 20 before pressing the copy start key 21 to set the desired number of copies. It is displayed on the display unit 17. Thereafter, when the user presses the copy start key 21, the copying operation is started, and the image on the writing surface 15 is copied onto a desired number of sheets.

Next, the operation of exposing the projection surface 16 from the opening 4 will be described. When the user desires to expose the projection surface 16 from the opening 4, the sheet feed key 1
Press 8. Then, the sheet feed motor is driven,
The driving roller 8 rotates, and the sheet 10 is fed from right to left when viewed from the opening 4 side. Then, the projection sheet 13
When the user releases his / her hand from the sheet feed key 18 when is exposed from the opening 4, the sheet feed motor stops and the sheet 10 stops. Thereby, the projection sheet 1
3 is arranged so as to be exposed from the opening 4 and the projection surface 16
Is exposed from the opening 4.

Then, the user places the writing surface 15 through the opening 4.
If it is desired to expose the sheet 10 again, the user presses the sheet feed key 18 as in the case where the projection surface 16 is exposed from the opening 4 and feeds the sheet 10 from right to left when viewed from the opening 4 side. Let it. Thereafter, when the writing sheet 12 is exposed from the opening 4, the user releases his / her hand from the sheet feed key 18 and stops the sheet 10. Thereby, the writing sheet 12 is arranged so as to be exposed from the opening 4, and the writing surface 15 is exposed from the opening 4.

As described above, when the user presses the sheet feed key 18 to feed the sheet 10,
A state where the writing surface 15 is exposed from the opening 4 and a state where the projection surface 16 is exposed from the opening 4 are selectively switched. Therefore, when an OHP or a liquid crystal projector that projects a projection image is used, there is no need to separately prepare a projection sheet on which the projection image is projected. Therefore, the indoor space is effectively used.

An electronic blackboard according to a second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are denoted by the same reference numerals, and description thereof will be omitted. FIG. 3 is a cross-sectional plan view showing the electronic blackboard of the present embodiment. As shown in FIG. 3, first and second rollers 22 and 23 are arranged at both left and right ends in the main body frame 1. These first and second rollers 22 and 23 hold a sheet 24. The first roller 22 includes:
One end of the sheet 24 is attached. The other end of the sheet 24 is attached to the second roller 23, and a part of the sheet 24 is wound. A sheet feed motor is connected to the first and second rollers 22 and 23 via first and second electromagnetic clutches (not shown).

The sheet 24 is arranged so that a part of the sheet 24 is exposed from the opening 4. The sheet 24 includes a writing sheet 25 and a projection sheet 13. One end of the writing sheet 25 is attached to the first roller 22. The other end of the writing sheet 25 is bonded to one end of the projection sheet 13. The other end of the projection sheet 13 is attached to the second roller 23. The writing sheet 25 is a long sheet that is longer than the projection sheet 13. The outer peripheral surface of the writing sheet 25 is hard-coated so that an image written by the marker 6 can be easily erased. When the writing sheet 25 is exposed from the opening 4, the portion exposed from the opening 4 becomes the writing surface 15.

At the front of the body frame 1, the opening 4
An operation panel (not shown) is provided on the right side of.
On this operation panel, a copy start key 21 and first and second sheet feed keys (not shown) are arranged. The first sheet feed key is a key for feeding the sheet 24 from right to left. The second sheet feed key is a key for feeding the sheet 24 from left to right, contrary to the first sheet feed key.

In such a configuration, the sheet 24 is usually arranged so that the writing sheet 25 is exposed from the opening 4, and the writing surface 15 is exposed from the opening 4. At this time, the user writes the image on the writing surface 15 to display an image such as a graph, a drawing, or a character. Then, when the user desires to copy the image written on the writing surface 15 onto a sheet, the user presses the copy start key 21. Then
The first roller 22 and the sheet feed motor are connected by a first electromagnetic clutch, the sheet feed motor is driven, the first roller 22 rotates, and the sheet 24 is wound by the first roller 22, Sheet 24 is fed from right to left. Then, the image on the writing surface 15 is read by the scanner, the image data is output from the scanner, and the image is printed on paper by the printer 3 based on the image data. Thus, the image on the writing surface 15 is copied onto the paper.

Next, the operation of exposing the projection surface 16 from the opening 4 will be described. When the user wants to expose the projection surface 16 from the opening 4, he presses the first sheet feed key. Then, the first roller 22 and the sheet feed motor are connected by the first electromagnetic clutch, the sheet feed motor is driven, the first roller 22 rotates, and the sheet 24 is wound by the first roller 22. The sheet 24 is fed from right to left. afterwards,
When the user releases the first sheet feed key when the projection sheet 13 is exposed from the opening 4, the sheet feed motor stops, and the sheet 10 stops. Thereby, the projection sheet 13 is arranged so as to be exposed from the opening 4, and the projection surface 16 is exposed from the opening 4.

Then, the user places the writing surface 15 through the opening 4.
Press the second sheet feed key when you want to re-expose. Then, the second roller 23 and the sheet feed motor are connected by the second electromagnetic clutch, the sheet feed motor is driven, the second roller 23 rotates, and the sheet 24 is wound by the second roller 23. The sheet 24 is fed from left to right. afterwards,
When the writing sheet 25 is exposed from the opening 4, the user releases his / her hand from the second sheet feed key. Then, the sheet feed motor stops, and the sheet 24 stops. Thereby, the writing sheet 25 is arranged so as to be exposed from the opening 4, and the writing surface 15 is exposed from the opening 4.

As described above, when the user presses the first and second sheet feed keys to feed the sheet 24, the writing surface 15 is exposed from the opening 4 and the projection surface 16 is changed from the opening 4. The state of exposure is selectively switched. Therefore, when an OHP or a liquid crystal projector that projects a projection image is used, there is no need to separately prepare a projection sheet on which the projection image is projected. Therefore, the indoor space is effectively used.

A whiteboard according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a perspective view showing the whiteboard of the present embodiment. As shown in FIG.
Supported by A writing surface 28 is formed on one surface of the main body 26. The writing surface 28 is provided with a hard coating so that an image written by a marker (not shown) can be easily erased. Writing surface 2
A receiving portion 29 on which a writing instrument such as a marker is placed is formed below (below in FIG. 4) 8. Writing surface 2
A projection surface 30 is formed on the back surface of the projection 8. The projection surface 30 is formed to have a rough surface so as to reflect the light applied to the projection surface in all directions. The projection surface 30 is a surface on which a projection image is projected by an OHP or a liquid crystal projector (not shown).

The stand 27 is provided with a pair of support pipes 31. At the lower ends of these support pipes 31, a base 32 is attached perpendicular to the support pipes 31. At each end of these bases 32,
A caster 33 is attached. The support pipe 3
1, a reinforcement stay 34 is attached.

The main body 26 is rotatably attached to the support pipe 31 about a horizontal shaft 35 as a center of rotation. The right support pipe 31a has the stand 27
A positioning portion 36 for positioning the main body 26 at a predetermined angle is formed. In this positioning part 36,
A plurality of positioning holes 38 through which the positioning pins 37 are inserted are formed. These positioning holes 38 are arranged on a circle centered on the horizontal axis 35. The main body 26
Are formed with first and second holes 39 and 40 into which the tips of the positioning pins 37 are inserted. The first hole 39 is formed at a position where the tip of the positioning pin 37 inserted through the positioning hole 38 is inserted when the writing surface 28 is disposed on the front side (see FIG. 4).
The second hole 40 is formed at a position where the tip of the positioning pin 37 inserted through the positioning hole 38 is inserted when the projection surface 30 is disposed on the front side (see FIG. 6).

In such a configuration, the normal writing surface 28
Is arranged on the front side. At this time, the user writes the image on the writing surface 27 to display an image such as a graph, a drawing, or a character.

When arranging the projection plane 30 on the front side, first, the user inserts the positioning pin 37 into the first hole 39.
Then, the main body 26 is rotated 180 degrees about the horizontal shaft 35 as a rotation center (see FIG. 5).
Then, the user positions the second hole 40 and the positioning hole 38, and inserts the positioning pin 37 into the aligned second hole 40 and the positioning hole 38. This allows
As shown in FIG. 6, the projection surface 30 is arranged on the front side, and the main body 26 is positioned and held at a predetermined angle with respect to the stand 27.

Thereafter, when the writing surface 28 is disposed again on the front side, the user rotates the main body 26 about the horizontal axis 35 by 180 degrees in the same manner as when the projection surface 30 is disposed on the front side. Then, the positioning pin 37 is inserted into the aligned first hole 39 and positioning hole 38. Thereby, the writing surface 28 is arranged on the front side, and the main body 26 is positioned and held at a predetermined angle with respect to the stand 27.

As described above, by rotating the main body 26 through the horizontal axis 35 as the center of rotation by 180 degrees, the writing surface 28 is rotated.
Is selectively switched between a state in which is disposed on the front side and a state in which the projection plane 30 is disposed on the front side. Therefore, when an OHP or a liquid crystal projector that projects a projection image is used, it is not necessary to separately prepare a projection sheet on which the projection image is projected. Therefore, the indoor space is used effectively.

As a method of positioning and holding the main body 26 with respect to the stand 27, the positioning pin 3 described above is used.
However, the method is not limited to the method using the positioning hole 38, the positioning hole 38, and the first and second holes 39 and 40, and the friction between the main body 26 and the horizontal shaft 35 and between the horizontal shaft 35 and the support pipe 31. May be added. In this method of adding friction, the main body 26 is positioned and held at an arbitrary angle with respect to the stand 27.

An electronic blackboard according to a fourth embodiment of the present invention will be described with reference to FIGS. The same parts as those of the third embodiment described above are denoted by the same reference numerals,
The description is omitted. FIG. 7 is a perspective view showing the electronic blackboard of the present embodiment. As shown in FIG. 7, the main body 41 of the electronic blackboard is supported by a stand 27 which is a supporting portion. The main body 41 is provided with a board 42 in which the writing surface 28 and the projection surface 30 are integrally formed on the front and back. A holding portion 43 is arranged on the left side of the board 42 (see FIG. 9). The scanner 4 is located in front of the holding section 43.
4 are arranged. A printer 45 is attached to a lower portion of the holding section 43.

The board 42 is rotatably supported by the support pipe 31 of the stand 27 around the horizontal shaft 35 as the center of rotation. The writing surface 28 of the board 42
A receiving portion 29 is formed below (in FIG. 7, below). On the upper surface of the board 42 (see FIG. 7), a long rail 46 is formed along the width direction of the board 42.

The holding portion 43 is provided on the left support pipe 31.
b. On the upper surface of the holding portion 43,
As shown in FIG. 8, a long groove 47 is formed in the width direction of the board 42. The groove 47 is arranged in an extension of the rail 46 in a state where the rail 46 is located above and the board 42 is vertically arranged. An operation panel (not shown) is arranged on a side surface of the holding section 43.

The scanner 44 is connected to the printer 45 via a cable 48. The cable 4
8 is arranged on the back side of the scanner 44 and the holding section 43. An extension 49 is formed above the scanner 44 so as to extend toward the holder 43 and to be disposed on the upper surface of the holder 43. The extending portion 49 has an engaging portion (not shown) for engaging with the rail 46 and the groove 47. This engaging portion is connected to the rail 46.
The groove 47 is formed sufficiently longer than the gap generated between the groove 47 and the groove 47. Switch-type sensors arranged in the rails 46 are provided on the left and right sides of the engagement portion. A roller (not shown) that contacts the upper surface (the upper surface in FIG. 7) of the board 42 and moves the scanner 44 in the width direction of the board 42 is attached to the extension 49. A roller drive motor (not shown) is connected to the rollers. On the front side of the scanner 44, a light source and a CCD (not shown) are provided. The light source irradiates the writing surface 28 with light. The CCD has the writing surface 2
8 is subjected to photoelectric conversion, and image data is output.

The printer 45 is provided with a paper transport unit (not shown) and a THP. The paper transport unit,
The sheet is transported to the THP. The THP prints an image on a sheet based on image data.

A copy start key (not shown) is arranged on the operation panel. The copy start key is appropriately operated by the user. The copy start key is a key for starting a copying operation for copying the image on the writing surface 28 onto paper.

In such a configuration, the normal writing surface 28
Is arranged on the front side. At this time, the user writes the image on the writing surface 28 to display an image such as a graph, a drawing, or a character. When the user desires to copy the image written on the writing surface 28 onto paper, the board 4
After confirming that 2 is vertical, press the copy start key. Then, the roller drive motor is driven, the rollers rotate, and the scanner 44 moves rightward along the rail 46. Then, the image on the writing surface 28 is read by the scanner 44, the image data is output from the scanner 44, and the image is printed on a sheet by the printer 45 based on the image data. Thus, the image on the writing surface 28 is copied onto the paper. After that, the scanner 44
When it moves to the right end of No. 2, the right switch type sensor contacts the right end of the rail 46 and turns on, and it is detected that the scanner 44 has reached the right end of the board 42. At this time, the roller drive motor rotates in the reverse direction, the rollers rotate in the reverse direction, and the scanner 44 moves to the left along the rail 46. When the scanner 44 moves to the holding unit 43, the switch-type sensor on the left contacts the left end of the groove 47 and is turned ON, and it is detected that the scanner 44 has reached the holding unit 43. At this time, the roller drive motor stops, the rollers stop, and the scanner 44 stops.

Next, the case where the projection plane 30 is arranged on the front side will be described. First, the user pulls out the positioning pin 37 from the first hole 39 and the positioning hole 38, and
The board 42 is rotated 180 degrees around the center of rotation 5 (see FIG. 9). Then, the second hole 40 and the positioning hole 38
Is aligned by the user, and the positioning pin 37 is inserted into the aligned second hole 40 and positioning hole 38. Thereby, the projection surface 30 is arranged on the front side as shown in FIG.
2 is positioned and held.

Thereafter, when the writing surface 28 is to be disposed again on the front side, the user operates the horizontal axis 35 as the center of rotation on the board 42 similarly to the case where the projection surface 30 is disposed on the front side.
Is rotated by 180 degrees, and the positioning pin 37 is inserted into the aligned first hole 39 and positioning hole 38. Thereby, the writing surface 28 is arranged on the front side, and the board 42 is positioned and held at a predetermined angle with respect to the stand 27.

As described above, by rotating the board 42 by 180 degrees about the horizontal axis 35 as the center of rotation, the writing surface 2
The state in which 8 is arranged on the front side and the state in which the projection plane 30 is arranged on the front side are selectively switched. Therefore, when an OHP or a liquid crystal projector that projects a projection image is used, it is not necessary to separately prepare a projection sheet on which the projection image is projected. Therefore, the indoor space is used effectively.

[0048]

According to the first aspect of the present invention, the sheet includes a writing surface and a projection surface on which a projection image is projected.
The writing surface and the projection surface are arranged side by side in the sheet feeding direction, and the writing surface or the projection surface is exposed from the opening, so that the sheet is fed from the opening. The state in which the writing surface is exposed and the state in which the projection surface is exposed from the opening can be selectively switched. Therefore, when an OHP or a liquid crystal projector that projects a projection image is used, it is not necessary to separately prepare a projection sheet on which the projection image is projected, and the space in the room can be used effectively.

According to the second aspect of the present invention, since the projection surface on which the image is projected is provided on the back surface of the writing surface, the writing surface is rotated forward by 180 degrees around the horizontal axis so that the writing surface moves forward. It is possible to selectively switch between the arrangement state and the state where the projection plane is arranged on the front side. Therefore, when an OHP or a liquid crystal projector that projects a projection image is used, it is not necessary to separately prepare a projection sheet on which the projection image is projected, and the space in the room can be used effectively.

According to the third aspect of the present invention, the writing surface and the projection surface are formed on the front and back of the board, and the board is rotatably supported by the supporting portion about the horizontal axis as the center of rotation. By rotating the horizontal axis by 180 degrees about the center of rotation, it is possible to selectively switch between a state in which the writing surface is arranged on the front side and a state in which the projection plane is arranged on the front side. Therefore, when an OHP or a liquid crystal projector that projects a projection image is used, it is not necessary to separately prepare a projection sheet on which the projection image is projected, and the space in the room can be used effectively. If the user desires to copy the image written on the writing surface, the scanner moves in a direction parallel to the writing surface, and the image on the writing surface is read by the scanner and read by the scanner. An image is printed on a sheet of paper by the printer based on the image data. Thus, the image written on the writing surface can be copied on a sheet.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing an electronic blackboard according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an electronic blackboard.

FIG. 3 is a cross-sectional plan view showing an electronic blackboard according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a whiteboard according to a third embodiment of the present invention.

FIG. 5 is a perspective view showing the whiteboard when a writing surface and a projection surface are being rotated about a horizontal axis as a rotation center.

FIG. 6 is a perspective view showing a whiteboard in which a projection surface is arranged on the front side.

FIG. 7 is a perspective view showing an electronic blackboard according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view illustrating a back surface of a scanner that reads an image on a writing surface.

FIG. 9 is a perspective view showing the electronic whiteboard when the writing surface and the projection surface are being rotated about the horizontal axis as a rotation center.

FIG. 10 is a perspective view showing an electronic blackboard in which a projection surface is arranged on the front side.

[Explanation of symbols]

 4 Opening 10 Sheet 15 Writing surface 16 Projection surface 27 Supporting part 28 Writing surface 30 Projection surface 35 Horizontal axis 42 Board 44 Scanner 45 Printer

Claims (3)

[Claims] A sheet having a writing surface on which an image is written, an opening exposing a part of the sheet,
An electronic blackboard that feeds the sheet to the opening, reads an image written on the writing surface, and prints an image on paper based on the read image data, wherein the sheet includes the writing surface and The writing surface and the projection surface are arranged side by side in the sheet feeding direction, and the writing surface or the projection surface is exposed from the opening. An electronic blackboard, characterized in that: 2. A whiteboard provided with a writing surface on which an image is written, the writing surface being rotatably supported about a horizontal axis as a center of rotation. A whiteboard, which is a projection surface. 3. A board on which a writing surface on which an image is written, a projection surface on which a projection image is projected are integrally formed on the front and back, and a support portion rotatably supporting the board about a horizontal axis as a center of rotation. A scanner that is provided movably in a direction parallel to the writing surface and reads an image written on the writing surface, a printer that prints an image on paper based on image data read by the scanner, An electronic blackboard comprising: