JPH11157284A - Writing board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely write even on an adhesive tape as well, and make it possible to erase the writing for a writing board such as an electronic blackboard equipped with a writing sheet which is made to be endless by fixing the surface side of a joint with the adhesive tape. SOLUTION: As an adhesive tape 31, a tape wherein on the face surface of a tape base material 40, a hard coating treatment layer 41 is provided by coating with an acryl-based resin, and on the rear surface, an adhesive layer 42 is provided by applying an adhesive, is used. Then, both end edges 30a of a longitudinal sheet member 30 are butted, and on the surface side, the adhesive tape 31 is affixed with the adhesive layer 42, and a writing sheet 15 is formed to be endless.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a part of an endless writing sheet stretched out from a front window of a board body such as an office electronic blackboard, a child's drawing board, a bulletin board, and a message board. In addition, the present invention relates to a writing board that forms a writing surface and writes characters and pictures on the writing surface using a writing implement.

[0002]

2. Description of the Related Art For example, an electronic blackboard for office use usually has a structure shown in FIG.
As shown in FIG. 1, an endless writing sheet 1 is hung between a plurality of rollers 2a to 2d, and the rollers are rotatably supported by a support frame of a blackboard body (not shown) so that the writing sheet 1 is stretched right and left. Then, the front side of the writing sheet 1 in the drawing is exposed to the outside from a large front window of the blackboard main body, and a writing surface P is formed there.

Conventionally, the writing sheet 1 used for such an electronic blackboard is formed in an endless form using a commercially available adhesive tape 3 because it is advantageous in terms of cost. For example, as shown in FIG. 6, both end edges 4a of one sheet member 4 are abutted, and the commercially available adhesive tape 3 is pasted thereon to produce an endless writing sheet 1.

However, when a commercially available adhesive tape 3 is used, writing on the adhesive tape 3 has a problem that the written trace cannot be easily erased.

Therefore, conventionally, the writing sheet 1 is stopped at a position where the adhesive tape 3 is hidden in the body of the blackboard each time the sheet is conveyed during use.

[0006]

However, conventionally, if the writing sheet 1 is always stopped at such a limited position, it is not possible to freely write at a desired portion of the writing surface P, and the writing range Is limited. Also, when making a copy, there is a problem that the copy range is limited.

[0007]

Therefore, according to the first aspect of the present invention, the edges 30a of the sheet member 30 are brought into contact with each other and the front sides thereof are bonded as in the embodiment described with reference to the following drawings. An endless writing sheet 15 is formed by stopping with a tape 31, and the writing sheet 15 is stretched between a plurality of rollers 20 to 23 supported in a board body such as the blackboard body 10.
In a writing board in which a part of the writing sheet 15 is exposed to the outside from 3a to form a writing surface S, the adhesive tape 31 is made up of a tape base material 40 and a tape base material 4 thereof.
0, and a pressure-sensitive adhesive layer 42 provided on the back surface of the tape base material 40.

When the writing sheet 15 is formed, the edges 30a of the sheet member 30 are abutted against each other, and an adhesive tape 31 is attached to the front side thereof with an adhesive layer 42 to form an endless shape.

According to a second aspect of the present invention, in the writing board according to the first aspect, for example, as in the embodiment described with reference to the following drawings, the adhesive tape 3 is used.
1 is formed in the same color as the sheet member 30.

According to a third aspect of the present invention, in the writing board according to the first aspect, for example, as in the embodiment described with reference to the following drawings, the adhesive tape 3 is used.
1 from the hard coat treatment layer 40 to the adhesive layer 42
Characterized by being formed by cutting toward.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is an external perspective view of an electronic blackboard according to the present invention, and FIG. 4 is a schematic configuration diagram showing an outline of an internal mechanism thereof as viewed from above.

As shown in FIG. 3, the electronic blackboard has a horizontally long rectangular flat blackboard main body 10 movably supported by a stand 11 with casters.

The blackboard main body 10 has a front window 13a at the front side.
Is provided, and a writing sheet 15 described later is partially exposed to the outside from a front window 13a of the window frame 13 to form a writing surface S there.

The blackboard main body 10 is provided with an operation panel 16 having a copy switch or the like on one side edge of the window frame 13, and an elongated pen tray 17 provided along the lower edge of the window frame 13. Further, a printer 18 is attached to the lower right side of the blackboard main body 10.

As shown in FIG. 4, the main body 10 of the blackboard is provided with a drive roller 20 and driven rollers 21 to 23 on both right and left sides thereof, and these roller shafts are rotatable by upper and lower frames (not shown). To support. In addition, roller 20
A back plate 24 is provided between the support frames 21 and supported by the upper and lower frames. Then, an endless writing sheet 15 is stretched between the rollers 20 to 23, the writing surface S is backed by a back plate 24, and the whole is supported by a rectangular frame-shaped base frame 12.

Further, an optical reading device 14 is provided in the blackboard main body 10 behind the writing sheet 15. The optical reader 14 includes a fluorescent lamp 25, a mirror 26, a lens 27,
It is composed of a CCD 28 and the like.

When the above-described electronic blackboard is used, for example, a marker pen is used as a writing instrument, and the alcohol-based ink is applied to the writing surface S with the marker pen to write characters and pictures.

When a copy of the written contents is to be made, a copy switch on the operation panel 16 is operated to drive a motor (not shown) to rotate the drive roller 20 and to rotate the driven rollers 21 to 23 while being driven. The writing sheet 15 is conveyed, and the sheet 15 is irradiated with light from a fluorescent lamp 25 of the optical reading device 14, the reflected light is reflected by a mirror 26, formed into an image on a CCD 28 through a lens 27, and written. Read the contents. Then, a signal from the optical reading device 14 is input to the printer 18, the read content is reduced, and the
The recorded paper is discharged while recording on the paper stored in the printer.

On the other hand, when erasing the written contents, the writing surface S is wiped with an eraser (not shown) to erase the written contents.

In the above-described electronic blackboard, the writing sheet 15 has a single longitudinal sheet member 30 as shown in FIG.
Of both ends 30a are fixed with an elongated adhesive tape 31 to form an endless shape.

As shown in FIG. 1, the sheet member 30 is formed by providing a hard coat treatment layer 33 on the surface of a base material 32 and cutting it to a predetermined length.

The base material 32 is, for example, white and 100 μm thick.
Of polyethylene terephthalate (PET). Polyolefin, polyvinyl chloride, cellulose acetate or the like may be used.

The hard coat treatment layer 33 is formed by coating the surface of the substrate 32 with, for example, an acrylic resin. Then, in order to facilitate writing with the marker pen, the acrylic resin is cured by UV irradiation and has a thickness of 3 mm.
μm and a surface roughness of 0.015 μm. Further, silicon is added to the acrylic resin in order to improve the erasability of the written contents.

As the adhesive tape 31, a tape cut into a predetermined width as described later is used. A hard coat treatment layer 41 is provided on the surface of the tape base material 40 in the same manner as the sheet member 30, and an adhesive layer 42 is provided on the back surface. Is provided.

The tape substrate 40 is formed of polyethylene terephthalate (PET), which is white according to the color of the sheet member 30 and has a thickness of 18 μm. As mentioned above,
Polyolefin, polyvinyl chloride, cellulose acetate or the like may be used.

The hard coat treatment layer 41 is formed on the tape substrate 3
2 is coated with, for example, an acrylic resin, and the acrylic resin is cured by UV irradiation to facilitate writing with a marker pen, similarly to the sheet member 30, and has a thickness of 3 μm and a surface roughness of 0.015. μm. Further, silicon is added to the acrylic resin in order to improve the erasability of the written contents.

The adhesive layer 42 is formed by appropriately applying an adhesive to the back surface of the tape base material 40 or attaching a double-sided adhesive tape.

When the writing sheet 15 is formed endlessly, both ends 30a of the sheet member 30 cut to a predetermined length are abutted, and an adhesive tape 31 is attached to the front side thereof.
Is adhered by the adhesive layer 42.

In the present invention, as the adhesive tape 31, although not shown, it is preferable to use a tape which is cut to a predetermined width from the hard coat treatment layer 41 to the adhesive layer 42 by, for example, shearing or the like.

When the adhesive tape 31 is adhered to the sheet member 30, the surface of the adhesive tape 31 on both sides is formed in a sagged shape, as shown in FIG.

In the present invention, even when a plurality of sheet members are connected to form an endless writing sheet, similarly, the edges of the sheet members can be connected to each other by the adhesive tape 31 described above.

[0032]

Therefore, according to the first to third aspects of the present invention, since the surface of the adhesive tape is subjected to the hard coat treatment, it is possible to write on the adhesive tape, and the writing is performed. Can be easily deleted.
This eliminates the need to stop the writing sheet at a position where the adhesive tape has deviated from the front window as in the related art, and as a result, regardless of the position of the adhesive tape, it is possible to freely write or copy at a desired location on the writing surface. Can be taken.

According to the second aspect of the present invention,
In the writing sheet, since the adhesive tape is formed in the same color as the sheet member, it is possible to prevent the appearance of the writing surface from being deteriorated even if the adhesive tape is stopped at a position where the adhesive tape can be seen from the front window.

According to the third aspect of the present invention,
The adhesive tape is made by cutting from the hard coat treatment layer to the adhesive layer, and when the adhesive tape is attached to the sheet member, the surface side of both side edges is drooped toward the sheet member side, so the seam of the writing sheet is In this case, writing and erasing operations can be easily performed, and at that time, the adhesive tape can be prevented from easily peeling off.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view of a connection portion of a writing sheet provided on an electronic blackboard according to the present invention.

FIG. 2 is a perspective view showing the writing sheet before it is stretched between rollers.

FIG. 3 is an external perspective view of the electronic blackboard.

FIG. 4 is a schematic configuration diagram showing an internal mechanism of the blackboard main body as viewed from above.

FIG. 5 is a perspective view showing a writing sheet provided on a conventional electronic blackboard in a state of being stretched between rollers.

FIG. 6 is an enlarged cross-sectional view of a connection portion of the writing sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Blackboard main body (board main body) 13a Front window 15 Writing sheet 20-23 Roller 30 Sheet member 31 Adhesive tape 40 Tape base material 41 Hard coat processing layer 42 Adhesive layer S Writing surface

Claims (3)

[Claims] 1. An endless writing sheet is formed by abutting edges of a sheet member with an adhesive tape on the front side thereof, and the writing sheet is stretched between a plurality of rollers for supporting the writing sheet in a board body. In a writing board for forming a writing surface with a part of the writing sheet facing outside from a front window of a main body, the adhesive tape, a tape base, and a hard coat treatment layer formed on a surface of the tape base. And a pressure-sensitive adhesive layer provided on the back surface of the tape substrate. 2. The writing board according to claim 1, wherein the adhesive tape is formed in the same color as the sheet member. 3. The writing board according to claim 1, wherein the adhesive tape is formed by cutting from the hard coat treatment layer toward the adhesive layer.