39results about How to "Erasure implementation" patented technology

The invention discloses a visual card erasing device which comprises a card issuing module, an erasing mechanism and a card reclaiming module, wherein the card issuing module comprises a card box for containing visual cards to be erased and a card pushing mechanism at the top part of the card box; the card pushing mechanism is used for pushing the visual cards into the erasing mechanism; the erasing mechanism comprises a first motor, a first driving wheel, a first driven wheel, a first conveyer belt and a hot erasing unit; a first transmission mechanism is arranged below the hot erasing unit; a first channel through which the visual cards can pass is formed between the hot erasing unit and the first transmission mechanism; the card reclaiming module comprises a second transmission mechanism and a reclaiming box; the second transmission mechanism comprises a second motor, a second upper turning wheel group, a lower turning wheel group, a second upper conveyer belt and a second lower conveyer belt; a second channel through which the visual cards can pass is formed between the second upper conveyer belt and the second lower conveyer belt; and the reclaiming box is arranged at one side of a card outtake end of the second channel. With the adoption of the visual card erasing device, the erasing operation of the visual cards can be carried out effectively; and the visual card erasing device is independent from a printer.

The invention discloses a light-emitting writing board and an operation method thereof. The light-emitting writing board comprises a main frame body and a reset device arranged in the main frame body,a reset cavity is formed in the main frame body, and a first rotating cavity located on the lower side of the reset cavity is formed in the main frame body; a rotating lamp cavity located on the right side of the first rotating cavity is formed in the main frame body, a first sliding cavity located on the right side of the rotating lamp cavity and is opened rightwards is formed in the main framebody, a fourth rotating cavity located on the lower side of the first rotating cavity is formed in the main frame body, a third rotating cavity located on the left side of the fourth rotating cavity is formed in the main frame body, and a second rotating cavity located on the right side of the fourth rotating cavity is formed in the main frame body; and a motor is fixedly arranged on the bottom wall of the fourth rotating cavity, the left end of the motor is in power connection with an eleventh rotating shaft, wherein the left end of the eleventh rotating shaft is rationally connected with theleft wall of the fourth rotating cavity, and a fifth gear is fixedly arranged on the eleventh rotating shaft.

The invention discloses an intelligent blackboard controlled by a touch panel. The intelligent blackboard comprises a blackboard body, a sliding frame, an eraser seat, an eraser body, a first driving mechanism, a second driving mechanism, a control device and the touch panel, wherein an electronic map is prestored in the control device; the blackboard is divided by a plurality of vertical lines and a plurality of horizontal lines to form a grid in the electronic map; and the touch panel is connected to the control device. When a user continuously moves on the surface of the touch panel in a touching way to form a closed path, the touch panel recognizes the area enclosed by the closed path as a rectangular area, and the control device judges the grid cells in the electronic map, which correspond to the rectangular area, and controls the first driving mechanism and the second driving mechanism to operate till the rectangular area is completely erased by the eraser body. The intelligent blackboard realizes automatic erasing of chalk writing on the blackboard body is realized, convenient degree in use is improved.

The invention discloses a block polymer capable of being used as white board pen ink dispersing agent and white board pen ink. The block polymer is prepared by a monomer A with m mole and a monomer B with n mole, and molecular weight of the block polymer is 15000-19000, wherein 60%<=m / (m+n)<=95%; the monomer A is an oil-soluble olefin monomer, and the monomer B is a water-soluble or alcohol-soluble chain segment. The white board pen ink is obtained by the following preparation method: dissolving the block polymer in organic solvent, adding pigments or oil-soluble dyes, removing the solvent, and adding water or alcohol solvent to obtain liquid A; dissolving an alcohol- / water-soluble polymer in the water / alcohol solvent, and adding auxiliaries to obtain liquid B; and pouring the liquid B into the liquid A to obtain the white board pen ink. The block polymer enables weak-polar pigments or the oil-soluble dyes to be dispersed in polar solvent stably, thereby achieving stability of the ink. The block polymer enables the pigments or the oil-soluble dyes to be wrapped in a resin system through bridging action, thereby achieving completely non-trace wiping.

A high-brightness liquid crystal writing device, comprising: at least two display material layers, the display material layers comprising cholesteric liquid crystal; at least one intermediate support layer, the intermediate support layer is arranged between every two display material layers; each display material layer Both sides of the layer are respectively provided with an erasing conductive layer, and when at least a part of each erasing conductive layer on both sides of the display material layer is respectively connected to the erasing voltage signal, the connection between the two erasing conductive layers forms between the access parts The electric field, which relatively covers the area of ​​the display material layer where the writing traces are erased. Therefore, the present invention retains the solution of the double-layer display material layer in the prior art (but the present invention is not limited to the double-layer), by disposing two erasing conductive layers on both sides of each display material layer respectively , to independently erase the display material layer to solve the problem of excessive erasing voltage, and at the same time, the incident light can be double-reflected by two or more display material layers to achieve the effect of enhancing brightness.