ZEBRA CO., LTD.
|ZEBRA CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20140186093||WATER-BASED INK COMPOSITION AND MARKING PEN - The invention relates to a water-based ink composition comprising a latex containing styrene-butadiene rubber particles, and a coloring agent, the glass transition temperature of the styrene-butadiene rubber particles being 0° C. to 50° C.||07-03-2014|
|20130200307||W/O-TYPE EMULSION INK COMPOSITION FOR WRITING UTENSIL AND WRITING UTENSIL - A W/O-type emulsion ink composition for a writing tool having an aqueous component dispersed in an oil component, the oil component including a fluorescent coloring agent, and the aqueous component including a fluorescent whitening agent and water.||08-08-2013|
|20100186623||WRITING INK COMPOSITION - The writing ink composition of the present invention includes: an oil-based component containing a polar solvent and a spinnability imparting agent; and a water-based component containing water, polyhydric alcohol, a thixotropy imparting agent and a pigment, the water-based component being dispersed in the above oil-based component.||07-29-2010|
|20100183356||RETRACTABLE WRITING IMPLEMENT - To prevent faint writing or writing failure from occurring during a writing operation due to back shock and to reduce shock sound by using a simple structure, a pressure contact member protrudes from one surface or both surfaces on the side of a shaft tube and a knock body so as to come into sliding contact with each other, parts on the side of the shaft tube and the knock body being opposed to each other in a radial direction. Accordingly, even when the part on the side of the knock body retreats with respect to the part on the side of the shaft tube in terms of a releasing operation, a retreat speed of an ink tank becomes slow due to a friction resistance of the pressure contact member, and thus back shock remarkably reduces. As a result, ink does not flow to the ink tank in a reverse direction due to air introduced from a writing tip portion and shock sound generated when the retreating ink tank returns to a normal position reduces.||07-22-2010|
|20100135711||INK COMPOSITION FOR WRITING TOOL AND WRITING TOOL - The writing tool||06-03-2010|
|20100129136||JOINING MEMBER AND BALLPOINT PEN EMPLOYING THE SAME - The present invention provides a joining member for connecting an ink accommodating member and a ballpoint pen tip provided in a ballpoint pen, the joining member comprising, as a constituent material, a resin comprising a copolymer of polyethylene terephthalate and polyethylene naphthalate. By this means, it is possible to provide a joining member for a ballpoint pen having, in particular, both sufficiently excellent transparency and gas barrier properties.||05-27-2010|
|20100054848||INK COMPOSITION FOR WRITING INSTRUMENT AND WRITING INSTRUMENT - The ink composition for a writing instrument according to the invention has an aqueous component containing water, a thixotropic agent, a polyhydric alcohol and a pigment, dispersed in an oil component having dyes and non-dye components, wherein the IOB value for all of the dyes in the oil component is no greater than 0.9.||03-04-2010|
|20090269122||INK REPLENISHMENT CARTRIDGE AND ENCAPSULATED FIBER TYPE WRITING INSTRUMENT USING INK REPLENISHMENT CARTRIDGE - The invention provides an ink replenishment cartridge and a writing instrument using the ink replenishment cartridge where new ink can be easily replenished in the writing instrument in which ink has been spent completely. The invention has a characteristic that the ink replenishment cartridge is provided with an ink tank having an ink discharge port, ink filled in the ink tank and a closing cap detachably mounted on the ink tank to close the ink discharge port and the ink tank is installed with the ink discharge port communicating with an opening at a rear end of a stem of the writing instrument from which a detachable tail cotter is removed.||10-29-2009|
|20090129851||AQUEOUS GEL BALLPOINT PEN AND METHOD FOR THE PRODUCTION THEREOF - An aqueous gel ballpoint pen||05-21-2009|
|20090110468||NEEDLE TYPE BALLPOINT PEN CHIP AND THE MANUFACTURING METHOD FOR A NEEDLE TYPE BALLPOINT PEN CHIP - The object of the present invention is to provide a needle type ballpoint pen chip capable of achieving smooth writing. The needle type ballpoint pen chip of the present invention has a very small diameter, the diameters of the ball and the ink flow hole are naturally also small. In order to achieve smooth writing, it is therefore necessary to minimize to the greatest extent possible deviation in the position of the center axis line of the ink flow hole in relation to the center of the ball. To achieve the object, in the needle type ballpoint pen chip of the present invention, a solid cylindrical steel material S with a diameter of approximately 1 mm or less, rather than a pipe material, is used as its base material, and an ink flow hole is formed by performing drill cutting processing on this steel material.||04-30-2009|
|20090047056||ENCAPSULATED FIBER TYPE WRITING INSTRUMENT - The invention provides a writing instrument that can prevent excessive ink from flowing from a writing part integrated with inner fiber and can prevent the writing part from being displaced in a longitudinal direction.||02-19-2009|
Patent applications by ZEBRA CO., LTD.