JPS62127296A - Blackboard information printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Technical field The present invention relates to a blackboard information printing device.

BACKGROUND OF THE INVENTION In recent years, electronic blackboards have been reprinted in which information such as characters and figures written on a white sheet can be hard-copied. However, such an electronic blackboard rotates a white sheet and reads information sequentially using a reading device provided at the end. As a result, the sheet surface cannot be made large in area, and the blackboard is generally smaller than a normal blackboard and information cannot be written on it sufficiently. There are many technical difficulties in the structure for rotating and moving such a white sheet which has increased in size to some extent, and the mechanism is complicated. In addition, in the case of a white sheet, etc., the space between the sheet and its support is not fixed, and the writing feeling is loose, which is not very good6.Furthermore,
In the case of this type of electronic blackboard, it is a dedicated type, and if you have a regular blackboard and there is no extra space, you will use the electronic blackboard by placing it in front of this regular blackboard.
This means that a regular blackboard cannot be used.

Purpose The present invention has been made in view of the above points, and provides a blackboard 1 with a simple mechanism that allows hard copying of 117 messages written on the blackboard surface using an ordinary blackboard as is.
It is assumed that the information printing device is 1-1.

In order to achieve the above objects, the invention consists of:
A reading device is provided which is normally located at the end of the blackboard and scans and moves the blackboard surface to read the information when information is printed on the blackboard surface. The invention is characterized in that it includes a printing device that prints on paper.

An embodiment of the present invention will now be described based on the drawings. First, a blackboard (or a whiteboard) 1 whose position is fixed is provided. A kite rail 2 is provided along the entire length of this blackboard 1 -L. A vertically elongated reading device 3 is provided on the front surface of the blackboard 1. As shown in FIG. 2, this reading device 3 is provided with a pulley 6 on the guide rail 2, which is rotated by a motor 5 attached to a bent support 4. (1; It scans one surface in the left-right direction. A guide roller 7 is provided on the lower end side of this support 4 and is in contact with one surface of the blackboard. This reading device 3 is shown in FIG. 5, for example. A light source 8 such as a fluorescent lamp that exposes a blackboard over its entire vertical width, and a slit plate 9 that converts the irradiated light into slit light.
and a slit) to focus the light onto one surface of the blackboard.
and a light-receiving element 11, which is an array of phototransistors, photodiodes, photoelectric conversion water, etc., which receives reflected light from the blackboard and determines whether it is black or white. Here, the arrangement density of the light receiving elements 11 in an array determines the resolution of information reading, and the density is 1.
A pitch of ~3 (goods) is enough to obtain a hard copy.

Regarding the scanning drive method of this reading device 3, the method using the guide rail 2 and pulley 6 described above actually causes slippage, and the scanning movement becomes unstable, causing the read information to be distorted and characters to be lost when making a hard copy. , figures, etc. may be distorted.

Therefore, in practice, as shown in FIG. As shown in the figure, a drive wire 16, a part of which is connected to the reading device 3, is stretched between a drive pulley 15 directly connected to the motor 14 and a driven pulley (not shown) provided at the other end. It is preferable to adopt a method of scanning and moving using this drive wire 16.

Also, in a position away from the blackboard 1, there is a regular size 1
A printing device 18 for printing on the printer 7 is provided, and is connected to the reading device 3 by a cable 19. This cable 19 is about 2 to 3 meters long, and since it would get in the way if exposed all the time, the printing device 18 is equipped with a cord winding device that is generally used in vacuum cleaners and the like. When the reading device 3 is moved, the cable 19 is pulled out by a necessary length and is normally wound up and stored. The structure of the printing device 18 itself can be a commonly used printer structure.

Further, one end side of the upper end of the blackboard 1 is a home position of the reading device 3, and a position sensor 20 is provided to detect whether the reading device 3 is located at this home position.

Next, a block diagram of the control system is shown in FIG. Basically, the control unit 21 controls the light receiving element 11 of the reading device 3, the driver 22 for the motor 5, the printing device 18,
A position sensor 20 is controlled. A keyboard 23 is also connected to this control section 21.

In such a configuration, the reading device 3 is normally on standby at the home position, and is set so as not to interfere with writing on the blackboard. When the information such as characters and figures written on one side of the blackboard is to be hard-copied, a copy instruction is given by operating the keyboard 23. As a result, the control section 21 causes the motor 5 to rotate at a constant speed to scan and move the reading device 3. This reading device 3
When moving, the information on one side of the blackboard is read by the t+- element 11, outputted as it is to the printing device 18 via the cable 19, printed on paper 17 by this printing device 18, and reduced to the blackboard information. Get a copy.

To further explain the operation at this time, the scanning speed of the reading device 3 cannot be made very fast because the reading device 3 itself is large, but it is necessary to copy at high speed or make multiple copies like a copying machine. Since there is no reader 3
Even if the scanning speed is slow, there is no problem. Furthermore, since the scanning speed of the reading device 3 is slow and is comparable to or lower than the printing speed of the printing device 18, there is no need for a commonly used memory such as a buffer memory, and one image can be printed while printing. There are two types that perform bubbling motions.

Reading and printing progress in this way, and when the reading device 3 reaches the other end of the blackboard 1, the 1b'' scraping and printing operation is completed, the motor 5 is reversed, and the reading device 3 returns to the home position. When the return to the home position is detected by the position sensor 20, the motor 5 and therefore the reading device 3 are stopped and placed in a standby state.

As described above, according to the present embodiment, it is possible to use a large-sized ordinary blackboard 1, and not only can sufficient writing be performed, but also the writing sensitivity is as good as in the case of an ordinary blackboard. Become something. Also, from a structural point of view, the reading device 3 only scans and moves, making it extremely simple. Even when an existing normal blackboard is provided with such a hard copy function, there is no need to install a new blackboard for each blackboard, and the blackboard can be used as is by performing additional processing.

Effects Since the present invention is configured as described above, it is possible to provide a hard copy function to a large-sized ordinary blackboard with a simple structure.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a front view showing an example of a drive system, and FIG. 4 is a view showing the other side of the drive system. 5 is a plan view of the reading device, and FIG. 6 is a block diagram. 1.Blackboard, 3.Reading device, 17.Paper, 18.
・Printing device applicant: Ricoh Co., Ltd.

Claims (1)

[Claims] A reading device is provided which is normally located at the end of a fixed blackboard and reads the information by scanning the blackboard surface when information is printed on the blackboard surface, and is connected to this reading device to read the read information. 1. A blackboard information printing device comprising a printing device for printing on paper.