JPH0327830Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Technical field> This invention is a method to instantly record the content written on the writing section.
Related to electronic blackboards that can be reduced and copied onto A4 size paper, etc.

<Prior art> In such an electronic blackboard, a sheet-like writing section is stretched between left and right rollers, and a back plate is placed on the back side of the sheet-like writing section between both rollers, which provides resistance when writing on the sheet-like writing section. After writing on the sheet-like writing part, when the roller is rotationally driven by the motor and the sheet-like writing part is wound up, the sheet-like writing part is arranged in a direction perpendicular to the transport direction of the sheet-like writing part. The written content is read by an image sensor and converted into an electrical signal, and the information based on the electrical signal is reduced and printed out on a predetermined sheet of paper by a copying unit.

<Problems to be solved by the invention> By the way, in meetings and the like where this electronic blackboard is mainly used, the writing surface located between both rollers of the sheet-like writing part is used immediately.
In addition to needing the next page, there are often times when you want to proceed with the discussion while comparing the written content of the previous page. In such a case, not only will the roller be rotated forward and backward frequently, shortening the life of the motor, but the progress of the proceedings will be interrupted until the entire writing surface of the sheet-like writing section is wound up. There are drawbacks that must be met.

The present invention has been made in view of these conventional problems, and aims to provide an electronic blackboard that can instantly convert the sheet-like writing section to another writing surface without driving a motor. This is a technical issue.

<Means for Solving the Problems> In the present invention, as a technical means for achieving the above-mentioned problems, an electronic blackboard is configured as follows.
That is, a frame whose front and rear surfaces are open and serve as display windows is rotatably supported on a base via support shafts provided at midpoints on both sides of the frame, and at least the Rollers are arranged at multiple locations, including a total of four locations on both sides of both display windows, with their respective axes parallel to each other, and endless sheet-like writing sections are attached to these rollers, and the folded portions of these rollers are all The sheet-like writing portion is stretched parallel to each other and parallel to both display windows, and a motor of a rotational drive source is connected to at least one of the rollers, and the sheet-like writing portion is transported in both display windows. A sensor for reading the written content of the sheet-like writing section and converting it into an electrical signal is disposed at the end of the sheet-like writing section, and a copying section is provided for printing out information based on the electrical signal. There is.

<Function> When using a writing surface exposed to one display window of a sheet-like writing section, when the frame is rotated 180 degrees around the support shafts on both sides of the writing surface, the sheet exposed to the other display window An unused writing surface on the writing section immediately appears. If you wish to compare and refer to the writing on the previous writing surface while using the writing surface on the other display window, you only need to rotate the frame 180 degrees again. Therefore, two types of writing surfaces can be alternatively and immediately displayed without driving any roller drive motor. When writing is finished and one side of the sheet-like writing part is rolled up,
The contents of writing on each writing surface facing the display windows on both sides of the sheet-like writing section are simultaneously converted into electrical signals by each sensor.

<Embodiment> FIG. 1 shows an overall perspective view of an embodiment of the present invention. Supports 2, 2 stand upright on both left and right ends of the base 1, and support shafts 3, 3 are provided at the midpoints of the supports, and a blackboard device 4 is rotatably supported on the support shafts 3, 3. . The blackboard device 4 is surrounded by a rectangular frame 5, and both the front and back sides of the frame can be used as a blackboard.

FIG. 2 shows a sectional view of the blackboard device 4, and FIG. 3 shows a perspective view of a rotational drive mechanism for an endless sheet forming a writing section. Five rollers 6, 7, 8, 9, and 10 with axes in the vertical direction are provided at both left and right ends,
One endless sheet 11 is stretched between the rollers so that the folded portions thereof are all parallel and parallel to each display window provided on the front and rear surfaces of the frame 5. endless sheet 11
A perforation 12 is bored at both upper and lower ends of the roller, and each roller is provided with a gear 13 that engages with the perforation 12. At one end of each roller are drive gears 14, 15, 16, 17, 1.
8 is installed, gears 15 and 17 are idler 29
The gears 14 and 18 are engaged through the gear 16, and the right roller shaft 6 and the left roller shaft 7 are provided with pulleys 19 and 20, respectively, and are engaged by a synchronous belt 21. , the main drive roller 6 is driven by a motor 22. In this way, the five rollers 6, 7, 8, 9, and 10 are configured to be driven by all wheels. Behind each of the writing surfaces of the endless sheet 11 exposed to both display windows of the frame 5, rear plates 23 and 24 are provided on both the front and back sides, respectively, for applying resistance during writing. Further, on the downstream side of the side of the back plate in the endless transport direction, sensors 25 and 26 are installed to convert the contents written on the endless sheet into electrical signals.
They are provided on both the front and back. sensor 25,
The electrical signal output from 26 is data processed using known electronic techniques and reproduced by a printer (not shown).

<Effects> According to the present invention, both the front and back sides can be used at the same time, and the writing surface of the sheet-like writing section can be changed instantly by simply rotating the frame 180 degrees, so meetings, etc. can proceed smoothly. Since the driving frequency of the motor can be significantly reduced, the life of the motor can be ensured. Furthermore, when writing is finished, there is an advantage that the written contents on both writing surfaces can be simultaneously read and printed out.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an embodiment of the present invention, FIG. 2 is a sectional view of the blackboard device 4 shown in FIG. 1, and FIG. 3 is a perspective view showing an example of the roller drive mechanism of the blackboard device 4. 1... Base, 3... Support shaft, 5... Frame, 6 to 10...
Roller, 11...Endless sheet (sheet-like writing part), 22...Motor, 25, 26...Sensor.

Claims (1)

[Scope of utility model registration request] A frame whose front and rear surfaces are open and serve as display windows is rotatably supported on a base via support shafts provided at midpoints on both sides of the frame, and at least both of the above-mentioned displays in the frame Total of 4 positions on each side of the window
rollers are arranged at multiple locations, including a plurality of locations, with their axes parallel to each other, and an endless sheet-like writing section is attached to these rollers, with all folded portions thereof being parallel to each other, and facing both display windows. The rollers are stretched parallel to each other, a motor for a rotational drive source is connected to at least one of the rollers, and the sheet-like writing section is placed at the end of the sheet-like writing section in the transport direction in both display windows. An electronic blackboard characterized in that it is equipped with a copying section that is provided with a sensor that reads the written content of the writing section and converts it into an electrical signal, and that prints out information based on the electrical signal.