JPH0347911Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention relates to an electronic blackboard device that can print written texts and figures on a blackboard used for meetings, meetings, etc., and particularly relates to a writing medium for electronic blackboards. .

(Prior art) In conventional meetings, briefing sessions, meetings, etc., the contents of the meeting are written on a blackboard, and all participants transcribe information such as matters decided as the progress is made, figures, etc. in notebooks. Also, because he copied the notes of one transcriber, he had the following shortcomings.

(1) All or some of the transcribers are unable to concentrate in meetings or meetings.

(2) It takes time to proceed with the meeting to match the writing speed of the transcriber.

(3) Transcription errors occur and transmission is insufficient.

(4) Due to proofreading by the transcriber, copies cannot be obtained immediately.

In order to solve these drawbacks, we have created an electronic blackboard that allows text and figures written on the blackboard to be printed instantly on the spot, allows the blackboard surface to be used repeatedly, and furthermore, stores written content so that it can be printed out at any time. A device has been proposed (Japanese Patent Application No. 58-44283).

(Problems to be Solved by the Invention) The present invention was developed in consideration of how to move the writing medium and select the writing surface.

(Means for solving the problem) In order to solve the above problem, the present invention devises the writing medium itself, and in order to detect the end of the movement of one page of the writing medium, 1 along the side and away from the writing area.
A mark is provided for each page width, and when the end of movement for one page is detected by this mark, the feeding of the writing medium is stopped and the next writing surface is selected.

(Function) According to the present invention, the end of movement for one page is detected by the marks provided for each page width along the long side of the writing medium and at a position outside the writing area. The feeding of the writing medium is stopped. When the feeding of the writing medium is stopped, the next writing surface is selected and the next writing becomes possible. Since these marks are provided for each page width, the number of pages can be managed by counting these marks.

(Embodiment) FIG. 2 is an external view showing an embodiment of the electronic whiteboard device according to the present invention. 1 is a housing, 2 is a writing medium on a blackboard surface (hereinafter referred to as a sheet), 3 is a concave tray for placing a felt pen, etc., 4 is an operation part of this device, 5
is a support for the printing paper, 6 is a leg of the device, and 7 is a caster.

FIG. 3 shows its functional block diagram, in which 2 is a sheet on a blackboard surface, 4 is an operating section, 8 is a sheet feeding drum, 9 is a sheet winding drum, 10 is a motor that drives the feeding drum, and 12 is a light source ( fluorescent lights),
13 is a ray path, 14 is a mirror, 15 is a lens,
16 is a light receiving element, 17 is a light receiving element peripheral circuit, 18
is a control circuit, 19 is a clock circuit, 20 is a character
FONT circuit, 21 image memory, 22 motor drive circuit, 23 print control circuit, 24 recording paper, 25 recording paper feed motor, 26 platen,
27 is a thermal head and 28 is a roller.

FIG. 1 is an explanatory diagram of a sheet forming the main part of the present invention, in which marks 29 are placed along the sides of a long sheet 2.
is provided.

The operation shown in FIG. 3 will now be explained.

When you finish writing the contents of the meeting on the sheet on the blackboard surface 2, the motor 1 is activated by a motor start signal from the operation unit 4.
0, 11, and 25 rotate simultaneously, and the sheet 2 is sent out from the drum 8 and wound onto the drum 9.

Text and figures written on the sheet 2 are illuminated by a fluorescent lamp 12 immediately before being wound onto a drum 9, and the light becomes a light beam 13, whose direction is changed by a mirror 14 and projected onto an image sensor 16 through a lens 15.

The screen projected on the image sensor 16 is converted into an electric signal as a single line in the vertical direction, and is converted into an electric signal in the horizontal direction synchronized with the feeding speed of the sheet 2, and the control circuit 18, It is output to the thermal head 27 through the print control circuit 23. The text and figures on the sheet 2 are reduced and copied onto the recording paper 24. When two or more copies of the same content are required, the image signal is stored in the image memory circuit 21 and this signal is used to make copies.

Here, as the sheet moves, a sensor (not shown) detects the mark 29 and transmits the page movement to the control circuit 18. The control circuit 18 detects the movement of pages, and when it is confirmed that one page has moved, controls the motors 10 and 11 to stop rotating. In the control circuit 18, the sensor output is input to a page counter to be described later, and the number of pages can be counted as the sheet moves. During operation of this electronic whiteboard device, the diameter of the sheet winding drum becomes thicker as the amount of sheet winding increases, so the sheet moving speed becomes faster. Therefore, if the speeds of the motors 11 and 25 are kept constant, the sheet surface will gradually move faster and be read, and since the motor 25 will print at a constant speed, the printed output will become shriveled and distorted. Therefore, this device has 30 page counters in the control circuit as a control function for sheet movement speed as shown in Figure 4.
31 sheet mobility counters, 32 counters, 3
By having the pulse generator 3, the sheet feeding motor 10 in this electronic whiteboard device is
When the page counter 30 starts operating at the sheet reading speed, the initial speed of the motor is set by the page counter 30, and the motor starts operating accordingly. The width of the writing surface is set as one page, and the marks on each page are displayed so that they can be distinguished from each other.
The marks for each page are read by a page counter 30, and the marks at fine intervals are read by a sheet mobility counter 31.

A counter 32 detects that one-third of the sheet length of one page has been moved by a sheet mobility counter 31, and a pulse generator 33 changes the rotational speed of the motor. This operation is shown in the flowchart of FIG.

With this method, the quality of print output can be further improved by increasing the number of speed change steps.

(Effect of the invention) As explained above, according to the invention, the end of movement for one page is detected by the mark provided along the long side of the writing medium and at a position outside the writing area. and the feeding of the writing medium is stopped. When the feeding of the writing medium is stopped, the next writing surface is selected and the next writing becomes possible. Since these marks are provided for each page width, the number of pages can be managed by counting these marks. Therefore, it is possible to improve the operability.

Furthermore, the sheet length determined by the use of marks is set as one page, and by changing the pulse cycle of the pulse motor within that length, the quality of print output can be improved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram for explaining the writing medium for electronic whiteboard of the present invention, FIG. 2 is an external view of the electronic whiteboard device, and FIG.
Figure 4 is a basic block diagram thereof, Figure 4 is a block diagram explaining motor control, and Figure 5 is a flowchart of motor control. 2... sheet, 29... mark.

Claims (1)

[Claims for Utility Model Registration] One writing surface is considered to be one page, and it has a long shape with the length of multiple pages, and by feeding one page, characters and figures on the desired writing surface can be printed. In writing media for electronic blackboards, which are optically read and reduced in size and copied onto recording paper, in order to detect the end of movement for one page, a position along the long side and outside the writing area is detected. A mark is provided for each page width, and when the end of movement for one page is detected by the mark, the feeding of the writing medium is stopped and the next writing surface is selected. Writing medium for electronic blackboards.