A magnet erased writing device or eWriter includes cholesteric liquid crystal material, in which a written image is erased using magnetically activated electronic circuitry. By eliminating the mechanical erase button of Prior Art eWriters, the eWriter can be designed with a display footprint that can cover nearly the entire face of the eWriter. An erasing magnet can be used with the device, which can be handheld as, for example, by being part of a stylus. With the erasing magnet separated from the device and the mechanical erase button being omitted, the eWriter avoids unintentional erasures, a drawback of Prior Art eWriters.

A media display assembly that includes a base assembly, including a base and a steel plate that forms a front surface of the base assembly and is removably affixed to the base, and wherein the base defines a set of resiliently deformable inwardly facing side surfaces. A cover, including a sheet having transparent display portion, is fit and held by tension between the resiliently deformable inwardly facing side surfaces. Finally, display media is interposed between the steel plate and the cover.

In one embodiment, a reusable writing kit is disclosed. The kit includes a substrate comprising a substrate writable surface and a substrate rear surface and a panel releasably mountable to the substrate. The panel includes a panel writing surface, a panel rear surface, and a first attachment member having a first type of securing force operable to mount the panel to the substrate, where the panel is mounted to the substrate and the panel rear surface is spaced apart from the substrate writable surface.

The present invention relates to a metal-sheet board or blackboard with magnetic features having two or three movements, which plots and represents reality in four dimensions (horizontal, vertical, depth and time) and which describes reality objectively, in which a T-shaped ruler is moved on a rail along the horizontal or X axis by a digital stepper motor controlled by a driver and software on the computer (horizontal movement). Furthermore, a tool truck surrounding the T-shaped ruler moves along the entire length (vertical movement) or Y axis thereof, actuated by a digital stepper motor controlled by a driver, which is in turn controlled by software on the computer, with these two movements controlled by mathematical speed and acceleration functions.

The present invention relates to a metal-sheet board or blackboard with magnetic features having two or three movements, which plots and represents reality in four dimensions (horizontal, vertical, depth and time) and which describes reality objectively, in which a T-shaped ruler is moved on a rail along the horizontal or X axis by a digital stepper motor controlled by a driver and software on the computer (horizontal movement). Furthermore, a tool truck surrounding the T-shaped ruler moves along the entire length (vertical movement) or Y axis thereof, actuated by a digital stepper motor controlled by a driver, which is in turn controlled by software on the computer, with these two movements controlled by mathematical speed and acceleration functions.

The consumer product holder device of the present invention provides a user with a centrally located, free standing device which can hold multiple beverages and other consumers products simultaneously. More specifically, the consumer product holder device provides a place for the user to hold multiple products in color-coded or personalized beverage holders to keep a beverage and other items or products within arms-length. The device also provides users with a convenient place to store trash, supplies, or sporting items, and to connect an accessory, such as a dry-erase board, light, flag, speaker or other item.

A magnetic display unit includes: a display layer; a magnetic layer located behind the display layer; and a quick-release mechanism including an activator, wherein the quick-release mechanism is adapted to increase the distance between the magnetic layer and the display layer such that, when activated by the activator, the quick-release mechanism causes any magnets located along the display layer to be released from the display layer.

A fluorescent blackboard comprises a housing, a circuit hoard fixed on the housing by screws, a display screen fixed by the circuit board, and a panel attached and fixed on the housing by the adhesive tape. The fluorescence blackboard is configured with a fixed device that limits and fixes the panel. The present disclosure uses that the fluorescent blackboard 1 configured with the fixed device that limits and fixes the panel, which makes the panel be firmly limited and fixed on the housing, which avoids the panel from coming lose. When the panel is squeezed, the fixed device can protect the panel, which avoids damage to the panel.

A fluorescent blackboard comprises a housing, a circuit hoard fixed on the housing by screws, a display screen fixed by the circuit board, and a panel attached and fixed on the housing by the adhesive tape. The fluorescence blackboard is configured with a fixed device that limits and fixes the panel. The present disclosure uses that the fluorescent blackboard 1 configured with the fixed device that limits and fixes the panel, which makes the panel be firmly limited and fixed on the housing, which avoids the panel from coming lose. When the panel is squeezed, the fixed device can protect the panel, which avoids damage to the panel.

Disclosed is a projection and communication board, having a double-sided enamelled steel plate with an enamel undercoat, on which a second white enamel coat is laid on the writing side, which after annealing presents a roughness defined by Ra =0.6-1.2 μm, Rz =3.0-8.0 μm, and R3z =3.0-8.0 μm. On this a third thin finishing coat is applied consisting of enamel powder, more than 90% of which consists of grains of less than 15 μm, and which after annealing presents a roughness defined by Ra =0.4-1.4 μm, Rz =2.0-6.0 μm, and R3z =2.0-6.0 μm.