JPH0585094A - Electronic blackboard device - Google Patents

Abstract

PURPOSE:To provide an electronic blackboard device wherein sheet face is not stained with erasion residue caused by electrification of writing sheet. CONSTITUTION:Top, back, and end faces of a writing sheet 3 are coated with a substance 25 containing conductive material. Electric charge electrified on the writing sheet 3 is grounded on a blackboard main body through a metallic roller 8 and a frame 9. Accordingly, the electric can be eliminated effectively without changing a structure specifically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic blackboard device which reads information such as characters and figures drawn on a sheet and records the information on a recording paper.

[0002]

2. Description of the Related Art In recent years, the demand for electronic blackboard devices capable of easily copying information on a blackboard has expanded due to its functionality so that memo writing is no longer necessary at meetings and the like.

In a conventional electronic blackboard device, a writing sheet is made of a polyester sheet coated with an acrylic material for improving the writing performance, and a marker is written on the sheet. When the erased characters were erased by the eraser, the sheet was electrically charged due to the friction between the surface of the sheet and the eraser, and the eraser dust and dust of the marker were likely to adhere. When the sheet becomes dirty, the contents of the writing become difficult to see, and when the copy is made, the dirt is also copied together. Therefore, various static elimination measures have been taken.

[0004]

However, in the above-mentioned conventional electronic blackboard device, since the sheet is large and movable, there is a problem in that taking measures to neutralize the sheet leads to an increase in design and manufacturing costs. There is a need for simple and effective static elimination measures.

[0005]

In order to solve the above-mentioned problems, the present invention comprises a drawing sheet having both surfaces coated with a conductive agent and electrically connected to both surfaces, and a conductive substance. And sheet transfer means.

[0006]

According to the present invention, by the above means, the electric charge charged on the drawing sheet can be removed through the sheet transfer means.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an electronic blackboard device according to an embodiment of the present invention. Reference numerals 1 and 2 denote an outer case having a writing section, a reading section, a recording section, etc. inside, 3 a writing sheet,
4 is a printer unit and 5 is a leg unit.

FIG. 2 is an exploded perspective view showing the internal structure of the outer cases 1 and 2 of the electronic blackboard device of FIG.
Is an intermediate panel that holds the back surface of the writing sheet, 7 and 8 are metal rollers that transfer the writing sheet 3, 9 and 10 are intermediate panels 6, and a metal frame that holds the rollers 7 and 8, 11 is the above A frame holding the writing sheet portion and the optical system, 12 is a fluorescent lamp attached to the frame 11, 13 is a reflection mirror, and 14 is an image sensor.
The frame 11 is provided with cut-and-raised parts 15 and 16, which are hooked in the holes 17 and 18 provided in the frame 9, and the screws 23 and 24 are inserted through the holes 19 and 20 provided in the frame 10, 11 screw holes 21
It is possible to fix the writing sheet portion and the frame 11 by fastening them to 22 and 22.

As shown in FIG. 3, the writing sheet 3 is coated with a coating material containing a conductive material such as a copper-based or iron-based powder material on the entire front and back surfaces and the end surface. . Therefore, the surface of the writing sheet 3 and the rollers 7 and 8 are electrically connected, and the electric charges charged on the writing sheet 3 due to the eraser of the writing content by the eraser, through the rollers 7 and 8 and the frames 9 and 10,
Taken to the frame 11.

As described above, in this embodiment, the writing sheet is coated on both the front and back sides and the end surface with the substance containing the conductive material, and the metallic sheet feed roller is used. It is possible to eliminate the static electricity charged on the writing sheet without the need for special modification.

Although the end surface of the writing sheet is coated in this embodiment, other means may be used as long as both the front and back surfaces of the sheet are electrically connected.

[0013]

According to the present invention, both sides of a writing sheet are coated with a conductive agent, both sides of the writing sheet are electrically connected, and the transfer means is made of a conductive substance. It is possible to eliminate the static electricity charged on the writing sheet without the need to make any special structural changes to the electronic blackboard device.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic blackboard device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the electronic blackboard device.

FIG. 3 is a sectional view of a writing sheet and a transfer roller portion of the electronic blackboard device.

[Explanation of symbols]

 3 Writing sheet 7, 8 Roller 9, 10 frame 25 Coating

Claims (1)

[Claims] 1. A writable drawing sheet, a reading unit for reading information written on the drawing sheet, the drawing sheet is wound, and the drawing sheet is transferred to a position where the reading unit can read information. A transfer unit, and a recording unit that records on a recording medium by the output from the reading unit,
A coating containing a conductive agent is applied to both sides of the drawing sheet, and both sides of the writing sheet are electrically connected,
An electronic blackboard device, wherein the transfer means is made of a conductive material.