278results about How to "Write fluently" patented technology

The invention discloses a dustfree board writing liquid and erasing agent, wherein the writing liquid comprises the following parts: colorant, pH adjusting agent, surface activating agent, filming agent, antifreezing agent, antiseptic agent, defoamer and distilled water.

An ink cartridge structure includes a resilient device coupled to an ink cartridge for absorbing impact energy acting on the ink cartridge for protection of the ink cartridge. The resilient device includes a connection bar mounted to the ink cartridge and is coupled to a retention bar that is accessible by a user with a resilient element therebetween so that the resilient element provides cushioning to the ink cartridge. The connection bar is partially fit into a hollow portion of the retention bar and forms a vent hole that is in communication with the ink cartridge so that when the retention bar, under the resilient support by the resilient element, is manually moved reciprocally with respect to the connection bar, air is pumped, through the vent hole, into the ink cartridge to force the ink contained in the ink cartridge to ward a writing tip.

The invention discloses a manufacturing method of top-grade ivory white offset printing paper. Bleached sulfate needlebush chemical pulp NBKP, bleached sulfate broad-leaf wood chemical pulp LBKP and alkaline hydrogen peroxide bleached cotton wood mechanical pulp APMP are used as fiber raw materials to carry out the papermaking, and a product is manufactured by virtue of thick pulp screening, mixing, slushing, sand and gas removal, sizing, fine screening, net-part dewatering forming, squeezing, pre-drying, surface gluing, post-drying, press polishing, coiling and packing. Each sizing agent comprises the following components by weight percent: 10 to 30 percent of the bleached sulfate needlebush chemical pulp NBKP, 50 to 70 percent of bleached sulfate broad-leaf wood chemical pulp LBKP, and 5 to 20 percent of alkaline hydrogen peroxide bleached cotton wood mechanical pulp APMP. The prepared top-grade ivory white offset printing paper is pure white and bulking in paper tissue, exquisite in surface, high in color restoration degree of a printed product and smooth in writing; and meanwhile, the surface strength of the paper can meet the 8-color commercial roller transfer printing requirement.

The invention relates to alcohol soluble white board marker ink easy to dry-erase and a preparation method thereof. The alcohol soluble white board marker ink comprises, by weight, 4.0-12% of macromolecule pigment, 30-60% of ethanol, 20-50% of isopropanol, 0.4-3.0% of polyvinyl butyral (PVB), 0.4-3.0% of fatty alcohol-polyoxyethylene ether, 0.4-3.0% of Solsperse series of hyperdispersant, 0.4-3.0% of glycerol, 0.1-3.0% of triethanolamine, 0.1-3.0% of paroline, 4.0-12% of laurate and 4.0-10% of butyl stearate. The preparation method includes: under the normal temperature and pressure, adding ethanol and isopropanol into a preparation vessel, then adding fatty alcohol-polyoxyethylene ether, Solsperse series of hyperdispersant, glycerol, triethanolamine, paroline, laurate and butyl stearate, then adding PVB, stirring evenly, finally adding the macromolecule pigment, and stirring for 4-8 h to obtain the ink. After the ink is dropped on the whiteboard, the ink is good in film-forming property, even in film coating, bright in color and good in stability. The preparation method is simple and easy to practice.

The invention relates to a dust-free colored magnetic powder writing blackboard, which comprises a magnetic blackboard, colored magnetic powder, a colored powder writing pen and a magnetic powder wiper, wherein a uniform magnetic field is arranged on the surface of the magnetic blackboard; the colored magnetic powder consists of three basic colors, namely red, green and blue as well as white; a rolling ball is arranged in the colored powder writing pen; a baffle and a spring are arranged behind the rolling ball; and the rolling ball is produced by attaching a micro steel ball to the spherical surface of a large steel ball. The invention has the beneficial effects of no raise dust, distinct handwriting, smoothness for writing, little effort for wiping and no reflection for board surface; the magnetic powder can be reused, permanent benefits by one-time investment are realized; and the dust-free colored magnetic powder writing blackboard has all advantages of a traditional blackboard; and meanwhile, all defects of the traditional blackboard are overcome.

The invention discloses a writing pen to which ink can be added repeatedly. The writing pen to which ink can be added repeatedly comprises a writing pen head, a pen head body, a pen rod body, a pen cap, an ink storage pipe, a piston in the ink storage pipe, a pen rod sealing cap and a pen head sealing cap, and is characterized in that the ink storage pipe is arranged in the pen rod body, the piston is arranged in the ink storage pipe, rubber sealing rings are arranged in inner thread connecting ports in two ends in the pen rod body respectively, one inner thread connecting port in the pen rod body is in butting connection with an outer thread connecting port of the pen rod sealing cap, the inner thread connecting port at the other end in the pen rod body is in butting connection with an outer thread connecting port of the pen head body, the pen head body is provided with a pen head connecting port used for installing the writing pen head, the pen head connecting port is communicated with an inner cavity of the pen head body, the inner cavity of the pen head body is communicated with the ink storage pipe, and the pen cap is provided with the pen head sealing cap matched with the writing pen head, so that the writing pen to which the ink can be added repeatedly is formed. The writing pen to which the ink can be added repeatedly has the advantages that when the ink in the ink storage pipe is used up, the pen head body is detached down, the ink storage pipe is filled with ink again, the pen head body is installed again, and finally the ink pen can be used normally. The writing pen to which the ink can be added repeatedly is simple in structure, smooth in writing, durable and capable of replacing various writing pens such as a disposable gel pen, a whiteboard pen, a mark pen, an art pen and a pen with defects, and becomes a novel replaceable writing pen which is environmentally friendly, cheap and durable.