AN ELECTRONIC COPY BOARD

Abstract: The electronic copy board is provided with an endless or continuous writing medium (2), on which a transparent sheet-­ shaped writing medium (3) is removably mounted. Any charac­ ters and figures written on both the writing media are combined, scaled down, and copied on recording paper by means of a recording device. In addition, another document (13) can be inserted between both the writing media. Thus, the characters and figures written on the document (13) and the transparent writing medium (3) can be combined, scaled down, and copied on the recording paper by means of the recording device.

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic copy board provided with a writing medium. 2. Description of the Related Art A prior electronic copy board is disclosed in EP-A-0 119 856 (published 26. 03. 84) filed by the present applicant. An electronic copy board is used in conferences, explanation meetings, and preliminary meetings, etc. The electronic copy board is capable of writing thereon various results yielded with the progress of a conference, contents of a preliminary arrangement, or information such as symbols and figures and the like, and display them for the participants. These pieces of information are written on a large-sized writing medium equipped with a screen movable by a roller using a writing tool such as an aqueous felt pen. In addition, such pieces of information can be scaled down onto recording paper, copied by the required number of sheets, and distributed to the participants. The electronics copy board is provided with a very effective function capable of recording a picture image which has been already written on a writing medium on recording paper by the required number of copies as described before. But, it is difficult to say at present that the electronic copy board is sufficiently demonstrating its function, thus presenting the possibilities of more versatile uses thereof as problems remained for future development. SUMMARY OF THE INVENTION It is an object of the present invention to extend the uses of the electronic copy board to more versatile fields based on the above-description. According to the present invention, the above objects can be achieved by the features stated in claim 1. Preferably, the transparent sheet is formed by a raw material at least capable of allowing a picture image to be erasable written thereon. According to the device described above, it is possible not only to write a picture image on a parent sheet or a transparent sheet constituting a writing medium by means of a writing tool and to record it on recording paper, but also to scale down onto recording paper a picture image which has been previously written on a large-sized document by handwriting or printing, by inserting said document between the parent and transparent sheets. In addition, it is also possible to record any document such as a map and the like on recording paper after the insertion thereof between the parent and transparent sheets and the addition of any picture from the upper of the transparent sheet. Further, according to the present invention, it is possible, besides its ordinary uses, to scale down a large-sized map and a design drawing onto recording paper, and record any document such as a map and a music sheet on recording paper as a picture image after its insertion between parent and transparent sheets and further its correction from the upper of the transparent sheet, thus leading to more versatile applications of the electronic copy board. BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and other objects, features, and attendant advantages of the present invention will be appreciated as the same become better understood by means of the following description and accompanying drawings wherein; FIG. 1 is a perspective view showing an embodiment of an electronic copy board, FIG. 2 is a perspective view of a portion of the internal structure of the electronic copy board of FIG. 1, FIG. 3 is a perspective view further illustrating a portion of FIG. 2, FIG. 4 is a partially enlarged side elevational view of a writing medium, and FIG. 5 is a perspective view of a portion of another embodiment. DESCRIPTION OF THE INVENTION According to FIGS. 1 through 4, a first embodiment is described. FIG. 1 illustrates a body of an electronic copy board mounted on a housing. Designated as 1 in the figure is a large-sized writing medium constructed by an endless parent sheet 2 and a rectangular transparent sheet 3. The parent sheet 2 is, as illustrated in FIG. 4, formed by arranging a surface film 2b on an opaque substrate film 2a and joining them, while the transparent sheet 3 is constructed by arranging a surface film 3b on a transparent substrate film 3a and joining them. Here, for the substrate film 2a of the parent sheet 2, a whitened polyester film, etc., can be preferably used. In the same way, for the substrate film 3a of the transparent sheet 3, a transparent polyester film, and for the surface films 2b, 3b, a fluorine film facilitated to be erasably written thereon by a writing tool such as a felt pen and cloth, etc., can be used. In the present invention, the parent sheet 2 is trained around a driving roller 4 and a supporting roller 5 arranged in parallel to each other and spaced in a prescribed interval, and is moved in circulation by rotating the driving roller 4 by a motor 6. By contrast, the transparent sheet 3 is sized to correspond to one screen of the writing medium. The sheets 3 are removably arranged respectively on the two planes of the parent sheet 2 between said both rollers 4, 5. Namely, the transparent sheet 3 is made mountable/demountable on/from the parent sheet 2 using as a means therefor a mounting means 2C such as an adhesive or a magic fastener. Accordingly, the writing medium 1 in the present invention provides two screens A and B each from the parent sheet 2 and the transparent sheet 3, and these screens can be alternated with each other to be exposed ahead of the device by moving the writing medium 1 by the motor 6. Designated as 7 is a fluorescent lamp being a light source, 8 a beam of light, 9 a lens, 10 a readout sensor, 11 a recording device equipped with a thermal head, and 12 recording paper. These are equivalent to those described in the aforementioned EP-A- 0 119 856. Designated as 13 is a document such as one handwritten or printed onto which a picture image has been previously written. Operation of the above device is described below. First, upon writing a picture image such as characters, numerals, symbols, and patterns, etc., on the writing medium 1 and recording it on the recording paper 12, the transparent sheet 3 is removed from the parent sheet 2, then the picture image is written on the parent sheet 2 by a writing tool such as a felt pen. After the completion of the writing, the movement of the writing medium 1, i.e., the parent sheet 2 toward the lamp 7 by the rotation of the driving roller 4 by the motor 6 causes a light illuminated by the fluorescent lamp 7 to be, forming a beam of light 8, projected onto the readout sensor 10 through the lens 9. The readout picture image is recorded on the recording paper 12 by the recording device 11, and the recording paper 12 is then sent out from the device. Although the operation described above is the same as that of a conventional electronic copy board, the present invention can further provide the following remarkable functions. Namely, as shown in FIG. 3, the upper side of the transparent sheet 3 is mounted on the parent sheet 2 of the writing medium 1 by the adhesive or detachable means 2c such as a magic fastener, etc., and a document 13 is held between the parent sheet 2 and the transparent sheet 3. Thereafter, as shown in FIG. 2, the lower side of the transparent sheet 3, and both right and left sides thereof are mounted on the parent sheet 2 by the detachable means. In this case, the contents previously handwritten or printed on said document 13 can be similarly read out as in the description and recorded on the recording paper 12. Thus, it is made possible, in case of the document 13 being a large-sized map or a musical sheet or a design drawing and the like, to simply scale down and record it. Further, it is also possible to hold said map or musical sheet or a schedule in which only dates have been previously written, etc., between the parent sheet 2 and the transparent sheet 3, and add any symbol, musical note, scheduled item and the like there to from the upper of the transparent sheet 3 and further record it on the recording paper 12 as a picture image, enabling the document 13 to be repetitively employed any number of times since the document 13 has not yet been directly corrected. Moreover, the present invention can be subjected to various modifications without any limitation to the aforementioned embodiment. For example, although in the embodiment described above, the parent sheet 2 is made possible for a picture image to be erasably written thereon, it may be also used for merely mounting the transparent sheet 3. Namely, the same effect can be attained by using, as the parent sheet 2, only the substrate film 2a such as whitened polyester and the like. In that case, the transparent sheet 3 is made to be always mounted on the substrate film 2a via a removing means, and upon ordinary use thereof, a picture image is erasably written on the transparent sheet 3, and upon use of a document 13 it is held between it and said substrate film 2a. Thus, a function for erasably writing a picture image may be provided only by the transparent sheet 3. FIG. 5 illustrates another embodiment. Moreover, in the embodiments described above the whole of the writing medium 1 was made endless, but a long material may be also used. In that case, one of the two rollers 4', 5' may be made to deliver the writing medium and the other to wind it. In addition, although the writing medium 1 was longitudinally moved as shown in the figure, the transversal one may be also allowed. Still more, although the embodiments described above were constructed to read out a picture image by the readout sensor 10 and to record it on the recording paper 12 by means of the recording device 11 equipped with a thermal head, it may be also possible instead of the use of such a recording means to employ an electronic photography system recording means.

Claims: An electronic copy board having a writing medium extending between a driving roller (4) and a supporting roller (5) and being movable by rotation of the driving roller (4), wherein a picture image present in or on the writing medium is read out by a readout sensor (10), and recorded by a recording means (11) on a recording paper (12), the writing medium (1) consisting of an opaque parent sheet (2) and a transparent sheet (3) removably attached onto the parent sheet (2), and either the parent sheet (2) or the transparent (3) sheet allowing a picture image to be written thereon and to be easily erased therefrom. An electronic copy board according to claim 1, wherein the opaque parent sheet (2) is endless. An electronic copy board according to claim 1 or 2, wherein a document (13) is held between the parent sheet (2) and the transparent sheet (3). An electronic copy board according to claim 3, wherein the readout sensor (10) reads out a picture image on the document and records the read-out picture image on the recording paper (12). An electronic copy board according to claim 3, wherein the readout sensor (10) reads out a picture image made by laying a picture image written on the transparent sheet (3) over an picture image on the document (13), and records the read-out superposed picture image on a recording sheet (12).

Inventors: ARAKI, SEIJI, TADOKORO, JOJI
Applicants: OKI ELECTRIC INDUSTRY COMPANY, LIMITED
Application year: 1985
Main classification: H04N1
IPC codes: B43L5, B43L1, H04N1