Abstract: A learning device has been described. The components of the system and methods of use are included. The device has been shown to be generally useful in providing organizational structure and memory techniques to enhance learning in a variety of subject areas. In one embodiment the device is made from printed erasable card stock. In another embodiment the learning device is incorporated into a program that controls a computing device to display and enable interaction with the learning device as shown on a display. In yet another embodiment the device is projected on a wall or screen using a computer and a projector.

Abstract: There is provided an image display apparatus and an image erasing method, by which a color image made of an ink can be displayed by fixing the ink on the recording medium, and, when it is desired to erase the color image, the color image on the recording medium can be erased by image erasing means. Therefore, the present invention comprises ink application means 1 for applying an ink onto recording medium 10 in accordance with image data, and image erasing means 4 for erasing the image formed on recording medium 10 by ink application means 1, wherein, when the solubility parameter (SP value) of the substance remaining on recording medium 10 after applying the ink is taken as SPp, the SP value of the substance constituting the surface of the recording medium is taken as SPm, and the SP value of the substance constituting the surface of the image erasing means is taken as SPc, said SPp, SPm and SPc satisfy the relationship |SPp−SPm|>|SPp−SPc|.

Abstract: An automatic erasing device is used for erasing chalk marks on a writing board, and includes an erasing mechanism having an elongated housing disposed frontwardly of and slidable relative to the writing board along a longitudinal axis. The housing extends in a transverse axis relative to the longitudinal axis, and has a rear wall formed with an elongated rear opening to confront the writing board, and a lower portion formed with a water tank. An eraser unit is disposed within the elongated housing, and is biased to protrude outwardly and rearwardly of the rear wall via the elongated rear opening for abutting against the writing board. The eraser unit is connected to the water tank in such a manner that water flows from the water tank into the eraser unit so as to soak the eraser unit while the eraser unit moves on the writing board.

Abstract: Writing boards such as electric blackboards which can erase all information written thereon without wiping the board by hand. On a front surface of an endless recording medium provided in the electric black board letters, characters, etc. are written with a writing tool. The writing tool uses an ink which is easily erasable with a cleaning liquid stored in a container. At the back surface of the recording medium, there is provided a cleaning instrument which faces the back surface of the recording medium. When all the writing is to be erased, an erasing switch is pushed. A pump is operated to move the recording medium, relative to the cleaning instrument. Thus, the cleaning liquid stored in the container circulates through tubes and the cleaning instrument and squeezes the cleaning liquid through an opening of the cleaning instrument to the recording medium.

Abstract: A writing board system comprises a white board having a writing surface for receiving a written mark thereupon, a liquid tank filled with water liquid for erasing the written mark from the writing surface, an applicator for applying the liquid in the liquid tank onto the writing surface, and a writing implement having an ink including at least one electron donative coloring compound selected from the group consisting of 2-{2-[4-(dodecyloxy)-3-metoxyphenl]-ethenyl}quinoline, 3-cyclohexylamino-6-chlorofluoran, 3-diethyl amino benzo [a]-fluoran, 3-(4-diethylamino-2-etoxyphenyl)-3-(1-ethyl-2-methylindol-3-yl)-4-azaphtha lide, 3.3 bis(4-diethylamino-2-etoxyphenyle)-4- azaphthalide, and 3-cyclohexyl methyl amino-6-methyl-7-anilinofluoran, and an electron acceptive developing compound selected from the group consisting of zinc salicylate and bisphenol A.

Abstract: A writing board with an automatic erase device includes a frame, a driving roller and a supporting roller rotatably mounted on the frame in a parallel manner, an endless writing sheet trained around the driving and supporting rollers to form a front exposed writing surface and a back surface, a supporting board interposed between the front writing exposed writing surface and the back surface of the writing sheet for providing a fixed rigid supporting to the front exposed surface, and an erase device positioned behind the back surface of the writing sheet and mounted on the frame. The erase device includes at least an elongated eraser which is extended along a width of the writing sheet and is disposed in the touching with the back surface of writing sheet, so that a writing content on the front exposed writing surface can be erased by the eraser automatically when the writing sheet is rotated by the driving roller.

Abstract: A device for displaying CAD drawings with a plotter, substantially consisting of a mounting for a plotter pen, such mounting being movably guided in accordance with a program in two coordinated directions relative to a drawing carrier. The drawing carrier is arranged in a frame and is embodied in the form of a board or foil with a surface, or layer to which the ink of the plotter pen adheres only temporarily and is removable again by means of an erasing device.

Abstract: An electronic blackboard apparatus, which reads a writing on a writing sheet fitted on a blackboard framework and which electronically copies the writing onto a recording medium. The apparatus includes a blackboard framework foldable together with the writing sheet, and a stand supporting the blackboard framework and a copying device. The stand is reducible in size while supporting the blackboard framework and the writing sheet in their folded position and the copying device. The length of the stand is reducible after the blackboard framework and the writing sheet have been folded to reduce their lengths. The blackboard framework and the writing sheet which have been folded are overturned into a space between opposite legs of the stand and the legs are then closed.

Abstract: A method and apparatus whereby information appearing on a CRT screen (410) is separately displayed in braille, using a braille web (100) in a loop form and made partly or wholly from a shape memory resin. The information from a CRT screen (410) is input to the web (100) by a braille printer (300) at a temperature within a range below the glass transition temperature of the resin. After the information has been read by the user, the displayed web portion is heated above the glass transition temperature by a heating roller (200) so that the web recovers its original, non-braille shape. The web is conveyed by a driving roller (210) along with the heating roller (200) and a driven roller (220) in the directions indicated by arrows in FIG. 1 for repeated use.

Abstract: A foldable electronic print board copies or records, on recording paper, various patterns of information, including letters, numerals, images, etc., which have been handwritten on a writing sheet. The foldable electronic print board has a pair of hinged cases housing the writing sheet, and a printer for printing the handwritten information on the recording paper. The printer is detachably mounted on the cases across the axis about which the print board is foldable, to keep the print board unfolded. Since the printer itself is used to hold the print board unfolded, no dedicated holder or holders are required to be fixed to the cases. The printer is located at the geometric center of the print board for thereby making the print board stable in use.

Abstract: An electronic blackboard includes a writing sheet movable along a predetermined path and having a plurality of writing sections spaced apart one from another, reading means for optically reading the writing sheet, and recording means for recording information read by the reading means of a recording medium as a hard copy. In one aspect, the image information read by the reading means is subjected to thresholding operation to produce a binary image data, and a standard concentration pattern is provided on the recording sheet and it is used to automatically set a proper threshold level to be used in the thresholding operation. In another aspect, it is so structured that the writing sheet may be stopped with one of the plurality of writing sections in registry with or out of registry with a predetermined window.

Abstract: An electronic print board is provided with an endless or continuous writing medium, on which a transparent sheet-shaped writing medium (3) is removably mounted. Any characters 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 can be inserted between the two writing media. Thus, the characters and figures written on the document and the transparent writing medium can be combined, scaled down, and copied on the recording paper by means of the recording device.

Abstract: An electronic print board which includes driving and support rollers rotatably mounted on a frame, an endless belt trained over the rollers, and a writing medium having a flat writing surface, wrapped around the rollers on the endless belt so as to substantially entirely surround the belt to thereby form an endless band-shaped screen. Fixing mediums are provided on the rear surface of the writing medium and the belt to removably mount the writing medium on the belt. A readout sensor receives light reflected from a picture image on the writing medium to provide a readout picture image to a recorder which records the picture image on recording paper. The exposed surface of the writing medium may be erasably written upon by, for example, a felt pen so that the writing medium may be repeatedly reused and easily detached and replaced when worn.

Abstract: A pattern erasably written on a black board or a flexible sheet in a meeting is printed to a hard copy through scanning of the pattern by an image sensor which provides an electrical signal relating to the pattern, and printing the pattern on a paper according to said electrical signal. The present print board comprises a housing, a writing sheet or a black board mounted on said housing, an elongated lamp for illuminating an elongated portion of said sheet, an image sensor to provide an electrical signal relating to the pattern on a scanning line on the sheet illuminated by said lamp, means for relatively moving said image sensor to said sheet for full scanning of the pattern, and a printer for providing a hard copy of the pattern with smaller size than said pattern according to said electrical signal from said image sensor.

Abstract: Disclosed is an aerial projectile game apparatus for playing along a horizontal play-field provided with a plurality of uprightly extending targets of the elevated cross-bar type and arranged in a courseway wherein the targets are to be serially consecutively engaged by a bola-type projectile according to some predetermined game-plan. The elevated cross-bar of the respective targets is preferably undulate along the transversely extending length to facilitate reliable engagement by the hurled bola and to permit various scoring values. The selected game-plan quest is optionally playable by two or more competing players respectively being assigned with an indentifiably marked bola. The game-plan to be selected might be analagous to that of prior art croquent utilizing rolling-ball projectiles, but instead utilizing an aerial bola projectile and an appropriate cross-bar type target.