Abstract: A drinking vessel comprising: a first attachment interface; an electronic display unit having a display screen and comprising a second attachment interface; and a remote control comprising remote control circuitry within a remote control housing; wherein: the first and second attachment interfaces are configured to cooperate to releasably attach the electronic display unit to the drinking vessel; the remote control is operable to wirelessly transmit instructions to the electronic display unit, including instructions relating to the content displayed on the display screen; the remote control housing is resistant to ingress of liquid when submerged in liquid at least up to the maximum depth containable by the drinking vessel; and the remote control housing is resistant to heat so as to protect the remote control circuitry from damage when the remote control housing is submerged in liquids heated to up to 100 degrees Celsius.

Abstract: The present invention relates generally to the field of writing notebooks and tablets, in particular a magnetic notebook and magnetic writing utensil system. The system includes a notebook with a magnetic zone disposed in one or both of the front and rear cover, and a magnetic writing utensil which can be attached to either cover. Further, the magnetic writing utensil has an integrated LED light that illuminates the writing surface and the tip of the utensil.

Abstract: A book includes a front cover and a plurality of pages below the front cover. A plurality of first elements are provided, one element mounted to each of the pages at a unique position on the respective page through the front cover. A page turning device is mounted on the front cover, having a second element that is movable over the front cover by a user to be selectively positioned over a respective unique position, the first elements and the second element being magnetically attracted to each other.

Abstract: One embodiment is a book includes a plurality of pages, a plurality of magnets, and a sensor. The plurality of the magnets generate a combined magnetic field strength, which is variable depending on positions of the pages on which the magnets are disposed. The sensor senses the combined magnetic field strength and generates a varying signal based on a varying of the combined magnetic field strength when at least one page is moved. The varying signal indicates a position of at least one page in the book.

Abstract: A magnetic plate toy includes a plurality of magnets and a polygonal plate member that includes a plurality of accommodation onions. A first magnet is movable along a side wall of the plate member and is rotatable about a first rotation axis oriented along the length of the first magnet and about a second rotation axis oriented along a thickness direction of the plate member. The plurality of accommodation portions are disposed along one or more side walls of the plate member, and a first accommodation portion include a first end portion. A width of the first end portion is equal to or greater than the width of the first magnet, the width of the first end portion is less than the length of the first magnet, and a width of an accommodation space in the first accommodation portion is greater than the width of the first end portion.

Abstract: A magnetic pen can be used with a magnetic panel. The magnetic pen includes a body with an end portion. A holder made of a magnetic material is attached to the end portion and an internal space is formed in the holder. A magnet having an S pole and an N pole is arranged in the internal space of the holder so that the S pole and the N pole are opposite the magnetic panel.

Abstract: The present invention provides a method and apparatus for manufacturing a magnetic drawing board having a plurality of areas, each of which is designated with a specific color, with clear border between adjacent areas of different color. The present invention makes use of magnetic force to ensure that magnetic particles of a specific color will be filled into cells designated for that specific color. As a result, the present invention is capable of manufacturing a magnetic drawing board with a clear division of areas of different colors. There is no longer any limitation on the size and shape of the areas of different colors in the present invention.

Abstract: A furniture object includes a writable element. The writable element is configured to provide for nonpermanent markings. The writable element is integral to the structure and/or the functionality of the furniture object.

Abstract: The invention relates to an apparatus for temporarily displaying visual information, comprising a frame, a plate of material included in the frame that changes colour due to local pressure and when exposed to a magnetic field, assumes its original colour, a magnet movable along the plate, guide means for guiding the magnet along the sheet in a fast position, wherein the magnet is arranged for erasing a part of the plate by its magnetic field during the movement along the plate, whereby the guide means arc arranged for guiding the magnet along a path in a second position different from the first position, whereby the magnetic field generated by the magnet does not erase the first part of the plate and the device comprises operation means for operating between the first and second position of the magnet.

Abstract: A child's activity toy having a support board to which a variety of differently colored discs can be magnetically attached. The colored discs are dispensed with disc dispenser pens adapted to house and dispense the discs, and thus create a colored image. The image created can be viewed using 3D imaging technology, and an enhanced visual effect can be observed when the images are observed under Ultraviolet light. A disc collection and sorting system is also included in the activity toy of the present invention.

Abstract: A coach board has a mounting board, a transparent film, an attractive board and a box. The transparent film is connected to the mounting board so as to form an interlayer space between the transparent film and the mounting board. The attractive board is removably inserted into the interlayer space between the transparent film and the mounting board and has a court layer. The court layer is attached to the attractive board, is visible via the transparent film and is protected by the transparent film. The box is mounted on the mounting board and receives multiple magnets inside. Therefore, a coach can instruct tactics to players easily by putting the magnets on the transparent film corresponding to the court layer of the attractive board.

Abstract: In an embodiment, the claimed invention is a device to for optical presentation of magnetic flux. A ferromagnetic colloidal mixture is substantially evenly dispersed and sealed between two optically transmissive lenses. At least one magnetic source is juxtaposed about the viewer. A light source is positioned to project through the mixture, the light interacting with the mixture to create the presentation of magnetic flux. The viewer is optionally positioned within a housing. In another embodiment, the invention is a method of using the viewer to view a presentation of magnetic flux when light interacts with the mixture.

Abstract: A game system including cards with computer-readable information is provided. The computer-readable information may be in the form of a code embodied on the cards. The cards may be selectively chosen and compiled in a card compiling device that is configured to remove singly a series of cards from one location and to deliver the removed cards to a new location.

Abstract: A magnetically actuated visual display board comprises a grid array of open ended chambers. Display configurations in each chamber utilize a magnetically responsive sliding element to move a display loop to alternate between two different display surfaces to create a desired visual array. A magnetic rod passing a chamber moves the sliding element within the chamber.

Abstract: Disclosed herein are a magnetically erasable writable educational flash card and method for making the same. The method uses a flash card comprising magnetic display panel, a magnetic die of predetermined pattern such as text character of a language, Arabic numeral, symbol or graphical picture of a learning subject, and a magnetic eraser. To make an educational flash card, a controlled repeated small amplitude sliding movement is applied to the flash card's magnetic display panel in contact with the face of the magnetic die resulting visual display of a mirrored silhouette of the magnetic die's predetermined pattern being created on the magnetic display panel. Two or more such cards comprise an educational flash card set for young children. The advantages of such flash card set include: more effective and enjoyable learning through participation, ergonomically fitful for fine motor skills development, better structured and creative learning, and changeable displaying indicia.

Abstract: A magnetic glass dry erase board including a glass sheet, a metal sheet and an adhesive layer. The glass sheet has an inner surface and an outer surface. The metal sheet has an inner surface and an outer surface. The adhesive layer substantially covers the inner surface of the glass sheet and the outer surface of the metal sheet to retain the glass sheet in a stationary relationship with respect to the metal sheet. The adhesive layer also enhances a strength of the glass sheet and protects persons from injury if the glass sheet is broken by retaining glass pieces on the metal sheet.

Abstract: A magnetically actuated visual display board comprises a grid array of open ended chambers. Display configurations in each chamber utilize a magnetically responsive sliding element to move a display loop to alternate between two different display surfaces to create a desired visual array. A magnetic rod passing a chamber moves the sliding element within the chamber.

Abstract: A magnetic display panel that excels in display and erasure performance, being free from any change of writing and display performance even upon repetition of display and erasure and that facilitates inhibition of thixotropic property and specific gravity control for dispersion medium vs. magnetic display substance, etc., ensuring low toxicity and low pollution. In particular, a magnetic substance display panel comprising a dispersion with yield value composed mainly of a magnetic display substance, water and an aqueous thickener and a support holding the dispersion, characterized in that the aqueous thickener is at least one member selected from among a crosslinked acrylic acid copolymer, a crosslinked maleic anhydride copolymer, a thickening polysaccharide and a polyvinylalkylamide.

Abstract: A reversal magnetic display panel where the numbers of writes/erases repeated until the micro magnets in a dispersion liquid sealed in multiple small cells formed between substrates sediment in the lower part of the small cells by repeated writes/erases when the reversal magnetic display panel is used in a vertical position are increased and a favorable display/erase performance is achieved. Between substrates, a dispersion liquid containing a dispersion medium and a thickening agent as main components and further containing micro magnets the both sides of each of which are differently colored are sealed in. Writing is constituted by difference in contrast between the color of the reversed micro magnets and the color of the non-reversed ones. Hollow particles are mixed with the micro magnets so as to reduce the ratio of the specific gravity of the micro magnets to that of the liquid. The residual magnetization per unit mass of the micro magnets is 1.0 to 23.

Abstract: A display device or diagramming a play includes a housing. A recess of the housing receives a display panel filled with a layer of magnetic particles and on which an outline of a field of play, or a portion thereof, is drawn. A stylus has a tip end which, when brought into contact with, or in close proximity to, an outer surface of the panel attracts the magnetic particles to the underside to form an image visible to anyone looking at the panel. The user can create as many images as he needs to diagram a play for his team. When done, the user moves a magnetic band underneath the length of the panel to erase the display.

Abstract: A magnetic drawing tablet apparatus comprising a stationary base housing and a screen housing movable with respect thereto. The screen housing will contain a magnetic drawing screen which is sealed and includes writing medium suspended therein which can create an image on the screen responsive to contacting thereof with a magnetic stylus. An magnetic erasing member is secured with respect to the base and extends into the screen housing to a position adjacent the magnetic screen. When the screen housing is moved between a docked position engaging the base and an extended position away from the base, erasing of images on the magnetic screen is achieved by passing the magnetic screen adjacently over the magnetic eraser. Sliding the screen housing relative to the base will preferably expose a decorative panel therebeneath. A receptacle in the base may be provided for storage of drawings templates and a magnetic style for writing may be mounted in a hole defined in the base.

Abstract: Disclosed herein is a front face erasable microcapsule magnetophoretic display sheet having a support and a solid dispersion layer provided on one surface of the support and composed of microcapsules having an average particle diameter of 50 to 650 ?m, in which a liquid dispersion, a white pigment, additives and magnetic particles are encapsulated, and a binder. The magnetic particles include at least two kinds of magnetic particles different in particle diameter from each other. An erasing magnet for front face erasing and a writing magnet for front face erasable microcapsule magnetophoretic display sheet are also disclosed.

Abstract: A magnetophoretic display panel capable of displaying clear and distinct indicia and erasing the indicia neatly. The display panel includes a multi-cell structure having a thickness of 0.8 to 1.5 mm and formed with a number of cells which contain therein colored liquids and colored magnetic particles. A magnetic pen exhibits an effective magnetic flux density of 100 to 500 Gauss at a bottom of a magnetic panel when positioned on a surface of the magnetic panel. An erasure magnet exhibits an effective magnetic flux density of 300 to 1500 Gauss at the surface of the magnetic panel when positioned on the bottom of the magnetic panel.

Abstract: A magnetic display device comprising a pair of flat-sheet display members formed of a non-magnetic material having transparency at least on its display surface, and a dispersion medium and magnetic particles held between the flat-sheet display members, wherein the display surface of the flat-sheet display member has luster. The magnetic display device has a high decorative effect, which can impart luster such as iridescent luster, iridescence and hologram appearance to images formed.

Abstract: A pre-writing teaching aid assists beginning writers in creating letters and pre-writing strokes. The teaching aid includes a magnetic-responsive drawing tablet including a housing, a writing surface and structure for displaying an image responsive to magnetic contact on the writing surface. Structure for erasing the image is provided enabling the writing surface to be used over and over. The teaching aid also includes at least four magnetic stamps that are appropriately sized relative to the writing surface and are shaped as big line, little line, big curve and little curve. All of the capital letters in the English alphabet can be formed using these four simple shapes. The resulting assembly provides a fun and effective learning activity.

Abstract: A magnetic dispersion medium is used in a magnetic writing screen toy. The dispersion medium is attracted to the underside of the screen when a magnetic tipped pen is passed over the upper surface of the screen. A user can create drawings and figures. The dispersion medium is non-toxic, creates lines having good contrast and can be easily erased without permanently forming black marks on the screen. The dispersion medium works well in temperature ranges between ?20° C. to 45° C.

Abstract: A reversible colorful writing apparatus includes a reversible writing board composed of a plurality of coloring picture tubes each filled with a plurality of immiscible coloring liquids in each coloring picture tube and suspended with a miniature magnet within each picture tube, and an inkless writing pen having a stepping-motor control circuit provided within the writing pen; whereby upon moving of the pen on the board, the stepping-motor control circuit will drive the miniature magnet forwardly (or reversely) in each picture tube to drive the immiscible coloring liquids forwardly (or reversely); and upon setting of the magnet at a specific position in the tube, a specific coloring liquid corresponding to such a specific magnet position will be driven to the top surface of the picture tube to display such a specific color on the board.

Abstract: A magnetic drawing apparatus including image forming means, image erasing means, motion generating means, movement control means and a main housing, wherein: the image forming means include a plurality of magnetic cells which collectively define an image forming surface, the magnetic cell contains a viscous fluid and magnetic powder; the image erasing means include a magnetic image eraser which is adjacent to the image forming means, the magnetic image eraser is connected to the motion generating means and is movable relative to the image forming means; and the movement control means include means for actuating the motion generating means and means for selecting the direction of movement of the magnetic image eraser with respect to the image forming means.

Abstract: Colored magnetic particles for magnetophoretic display capable of substantially preventing peeling of a pigment therefrom, to thereby prevent contamination of a dispersion medium during use of a magnetophoretic display panel, and a method for manufacturing the same. The colored magnetic particles include magnetic particle elements and a coloring layer formed on each of the magnetic particle elements from a first dispersion liquid using a coating apparatus of a tumbling, fluidizing and granulating type, to thereby color each of the magnetic particles. The first dispersion liquid is constituted of a coloring pigment, synthetic resin and water. The synthetic resin is in the form of an aqueous emulsion. The colored magnetic particles each include a protective layer formed on the coloring layer. The protective layer is formed from a second dispersion liquid constituted of synthetic resin dispersed in water.

Abstract: A magnetic display panel capable of ensuring safety to the body of an infant, permitting drawing of clear lines and ensuring safe disposal thereof. A magnetic display panel (1) includes a core housing (3) which has a peripheral edge (3a) formed to have an increased height and is formed therein with a recess (8), a plate-like face member (2) arranged so as to cover the recess (8), and a core block (5) provided with a number of cells (4) in which a plastic dispersion liquid (7) containing magnetic particles is encapsulated and sealedly joined between the core block (5) and the plate-like face member (2) by an adhesive. The core housing (3) and plate-like face member (2) are each made of olefin synthetic resin. One of the core housing (3) and plate-like face member (2) constitutes a drawing faceplate which is formed to be transparent or semi-transparent. The core block (5) is formed of pulp made paper.

Abstract: A binder, such as a three ring binder, is provided with a read/write panel on the front cover of the binder and with a stylus mounted onto the binder. The read/write panel may be inset into the cover of the binder, or it may constitute substantially the entire front cover of the binder, or it may be inserted into a transparent pocket on the front cover of the binder. The read/write panel includes inner and outer sheets with material between the sheets forming an image upon appliction of a stylus. In one embodiment the inner sheet may be coated with a waxy material; and in another embodiment magnetic particles in a viscous medium are employed. For the magnetic embodiment, the eraser may be of a broad area permanent magnet type which may be brought into engagement with the entire magnetizable panel; or a smaller linear permanently magnetized eraser may be employed. The binder preferably is a full size binder for 8 ½×11 inch or A-4 size sheets of paper.

Abstract: A reversible colorful writing apparatus includes a reversible writing board composed of a plurality of coloring picture tubes each filled with a plurality of immiscible coloring liquids in each coloring picture tube and suspended with a miniature magnet within each picture tube, and an inkless writing pen having a stepping-motor control circuit provided within the writing pen; whereby upon moving of the pen on the board, the stepping-motor control circuit will drive the miniature magnet forwardly (or reversely) in each picture tube to drive the immiscible coloring liquids forwardly (or reversely); and upon setting of the magnet at a specific position in the tube, a specific coloring liquid corresponding to such a specific magnet position will be driven to the top surface of the picture tube to display such a specific color on the board.

Abstract: A magnetic material-inverting display panel wherein a liquid dispersion, which has a yield value and contains a magnetic display material in fine particle form having magnetic poles of opposite signs tinged with different colors by placing an opaque thin metal layer on at least one surface and making the color of another surface different from that of the thin metal layer of one surface, a dispersion medium and a thickener as main components, is supported by a support. The total area of S-pole-surfaces or N-pole-surfaces of the magnetic display material in fine particle form being from 60 to 1500% of the display surface area of the display panel. The magnetic material-inverting display panel of this invention has whereby a good contrast and forms a display of a metallic tone or a pastel color tone.

Abstract: A magnetic writing device including a magnetically responsive writing tablet operatively connected to an automated output is disclosed. In one embodiment, the automated output is a sound produced as the user presses on the magnetic writing tablet. The writing tablet may be rotatably supported within a housing such that as a user presses on the writing tablet with a magnetically attractive stylus, the tablet rotates and engages a switch to activate the output device. In an exemplary embodiment, the switch is an elastomeric switch which activates an electronic sound unit in the housing to produce electronic sounds. The writing device may also include a magnetic eraser rotatably supported within the housing so as to rotate with the tablet. The magnetic eraser preferably engages an eraser surface of the tablet and is slidable there along so as to “erase” an image formed on the writing surface of the tablet.

Abstract: A magnetic material-inverting display panel which provides a clear display and the erasure by having a liquid dispersion, which has a predetermined yield value and contains a magnetic display material in fine particle form having magnetic poles of opposite signs tinged with different colors. The liquid dispersion also includes a dispersion medium and a thickener as main components, and is supported by a supporting member. The total area of S-pole-surfaces or N-pole-surfaces of fine particles of the magnetic display material being from 60 to 500% of the display surface area of the display panel.

Abstract: In a magnetically writable and erasable writing device for practice in writing characters, the writing device includes a case member provided with an opening in a top surface of the case member wherein a frame section surrounding the opening is formed on the top surface of the case member. A writing sheet includes a microcapsule magnetic sheet and is disposed on the case member so as to expose a top face of the writing sheet from the opening of the case member. A magnetic member for writing on the writing sheet and an erasing member which is positioned under the writing sheet and which has magnetism is included in the case member. The magnetic member put on the top face of the writing sheet enables writing and moving the erasing member along a back face of the writing sheet enables the written contents to be erased. The frame section of the top surface of the case member indicates a character model.

Abstract: A discussion roused at an electronic conference in a distributed environment is monitored, and if a predetermined index relating to the amount of a discussion exceeds a prescribed value, the holding of a face-to-face conference is automatically determined. Then, facilities and transportation needed to hold the face-to-face conference are automatically reserved and notified to participants.

Abstract: An apparatus for a coloring and activity game and a method of using the apparatus are disclosed. The apparatus is in the form of a kit that includes a set of background sheets, that can be drawn on, colored, or painted by a child, a set of magnetic characters, and a set of magnetic captions that can contain words of description, thoughts or speech attributable to the characters. The sheets can be placed over a magnetically attractive background to which the characters and captions are magnetically attracted. The characters and captions can then be arranged over the sheets in various ways by the child to represent and/or play out various scenarios imagined by or provided to the child. The background sheets may be made of plain paper, or the background sheets may be transparent, washable or both.

Abstract: A table or base for a telephone or the like includes an outer case, a recording sheet which is retractable within the outer case and which includes a microcapsule magnetic sheet, and an erasing magnetic member disposed within the outer case. The outer case has a top surface on which the telephone and other articles can be placed. The erasing magnetic member is positioned under the recording sheet when the inner case is pushed into the outer case. Thus, pulling out the recording sheet from the outer case enables a top face of the recording sheet to be magnetically written in, and pushing the recording sheet into the outer case enables the magnetic writing on the recording sheet to be erased.

Abstract: An infant toy for drawing a colored picture, capable of carrying out a colorful multi-color display, to thereby be suitable as an intellectual training toy. The toy includes a pair of substrates (12a, 12b) and a multi-cell structure arranged between the substrates and including a number of cells (16), which are previously classified into a desired number of regions 4 (4a, 4b, 4c, 4d, . . . ). The toy also includes dispersions (20) encapsulated in the cells of the regions in such a manner that the regions adjacent to each other may exhibit colors different from each other, respectively. The dispersions each include magnetic particles (18) having a respective one of the different colors put thereon, a dispersion medium and a coloring agent constituting a background.

Abstract: A magnetic drawing board for color drawing used for children, it is comprised mainly of an encircled seat in the shape of a plate, plural set of iron powder of various colors and coarseness, a scraping plate and a magnetic pen. Wherein the nib of the magnetic pen can be changed with any of various shapes of nibs, the nib has therein a magnetic seat capable of changing orientations, attraction and repellent of magnetic poles thereon. The encircled seat is provided therein with a magnetic pad, magnetic force of the magnetic pad is smaller than that of the nib. The scraping plate is provided in the encircled seat which is provided at one edge thereof with a plurality of powder grooves, and a movable stop plate is pivotably provided above the powder grooves. And iron powder with various colors and coarseness is received in the powder grooves respectively.

Abstract: An objective of the present invention is to provide a magnetic display panel capable of writing on both face and rear surfaces. A magnetic display panel, comprising a face substrate, a rear substrate, cell walls for forming a cell, for binding the face substrate and the rear substrate and for enclosing a dispersion liquid including a magnetic particle, wherein the cell walls having U-shaped cross sections are formed by bending and standing partially one or both of the face substrate and the rear substrate to almost 90 degrees, wherein a clearance of the U-shaped cross sections in each cell wall has an open angle of 0 to 20 degrees, wherein a base portion clearance of the U-shaped cross section is 0.1 mm to 1.0 mm, and wherein a top portion clearance of the U-shaped cross section is 0 to 1.0 mm.

Abstract: A method of forming magnetized rotating elements for a rotating element display where all the elements are magnetized in the same orientation is provided. First, at least two planar streams of hardenable liquids flowing in substantially the same direction are provided. Each stream has an associated optical modulation characteristic and at least one stream has an associated optical modulation characteristic different from at least one other stream. At least one stream includes a magnetic pigment. The streams are then merged to form a reservoir containing side-by-side amounts of each liquid from each stream. A free jet is then formed containing side-by-side amounts of each liquid from the reservoir. Then a portion of the free jet is passed through a magnetic field which is oriented transverse to the direction of the free jet to magnetize the magnetic pigment. The rotating elements formed can be either spherical in shape or cylindrical in shape.

Abstract: A dispersion composition suitable for a magnetic display which comprises 10 to 30 wt % of magnetic particles having a particle diameter of 10 to 150 .mu.m, 0.01 to 0.5 wt % of an antistatic agent, 1 to 10% by weight of an organic thickening agent, 0.1 to 10% by weight of a colorant and a balance of an organic dispersing medium.

Abstract: A play strategy erasable screen assembly is provided including a housing and a display mechanism mounted thereon. The display mechanism includes an upper transparent layer, a thin compartment situated thereunder within an interior space of the housing, and a predetermined amount of metallic shavings situated within the compartment. A plurality of stamps are included each having magnets mounted thereon for being placed on the transparent layer of the display mechanism to adhere the metallic shavings on the transparent layer in a configuration similar to that in which the magnets are mounted on the stamps. Next provided is an erasure assembly for selectively removing the metallic shavings from the transparent layer.

Abstract: An album (50) for photographic prints includes a front cover (52); a back cover (54); a binder member (56) attached between the front and back covers; an elongated, partially cylindrical shell member (78) attached to the binder member, the shell member having opposite ends (80, 82) and opposed longitudinal edges (90, 92), the longitudinal edges being attached to the binder member; and at least one album page (94) movably attached to the shell member, the page having opposed portions (96, 98) which extend around the opposite ends, whereby the page can be moved circumferentially around the shell member from a first position near one of the covers to a second position near another of the covers. The album may include a sensing device (30, 32) to detect movement of the at least one page and a produce a signal; and a system (124-160), responsive to the signal, for playing back sound messages or displaying text messages, or both, associated with photographic prints carried by the at least one page.

Abstract: Magnetic cards are formed by plural, coadjoining, generally planar, parallel layers. Outermost layers form outer sides of each card. At least a first visible image is provided on a first of the outer sides. The card includes a generally planar, permanently magnetized layer formed by one or more permanently magnetizable planar components that are fixedly positioned preferably within a frame between the opaque outer sides or a magnetizable material layer only -part of which has been selectively permanently magnetized. The permanently magnetized layer or permanently magnetized portion of a larger, magnetizable layer has a predetermined configuration which is related at least in informational content to the first visible image. A silhouette of the predetermined configuration can be magnetically reproduced by placing a card on a magnetically actuated fluid display panel.

Abstract: A magnetic migration display panel including a dispersion liquid layer composed of a magnetic particle, a dispersion medium composed of an organic solvent, a thickening agent composed of fatty acid bis-amide with a hydroxyl group having a melting point of 120.degree. C. to 160.degree. C., and a coloring material as desired, on a substrate is provided.

Abstract: A magnetic display apparatus having a magnetic display sheet consisting of a plurality of microcapsules having oily liquid having photoabsorptive ferromagnetic powder and photoreflective non-magnetic powder, an apparatus for erasing with a magnet a line drawn on the display sheet by the magnetic pen, a magnet, a mechanism for moving the magnet along a major portion of the magnetic display sheet and a power source for moving the mechanism which supports the magnet.

Abstract: An album includes a plurality of pages and another portion such as a front and/or back cover, or a binder. A plurality of magnets are positioned at respective relative locations on one of the album portion or the plurality of pages. A plurality of magnetic field sensor means, such as Hall effect sensors, are positioned at respective relative locations on the other of the album portion or the plurality of pages which substantially match the respective locations of the plurality of magnets for sensing the position of each page relative to the other portion.