Patents Assigned to The Pilot Ink Co., Ltd.
-
Publication number: 20130210622Abstract: The present invention relates to a thermochromic color-memory composition containing: (I) an electron donating coloring organic compound, (II) an electron accepting compound, and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reaction of the components (I) and (II): (in the formula, X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20).Type: ApplicationFiled: October 7, 2011Publication date: August 15, 2013Applicant: THE PILOT INK CO., LTD.Inventor: Yoshiaki Ono
-
Patent number: 8500354Abstract: A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.Type: GrantFiled: August 10, 2007Date of Patent: August 6, 2013Assignee: The Pilot Ink Co., Ltd.Inventor: Youichi Takasu
-
Patent number: 8491213Abstract: A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.Type: GrantFiled: May 7, 2004Date of Patent: July 23, 2013Assignee: The Pilot Ink Co., Ltd.Inventor: Youichi Takasu
-
Patent number: 8444450Abstract: A toy comprises a toy element comprising a photochromic layer which contains a photochromic compound having a photo memory function (color-memorizing photochromic property), maintains a coloring state by developing a color through the irradiation of ultraviolet rays or sunlight containing ultraviolet rays and changes into decolorizing state through its decolorization by the irradiation of visible light, and a color-changing means which contains at least one of an ultraviolet ray absorbent and a light-shading pigment capable of shading at least ultraviolet rays, changes the photochromic compound of the coloring state into decolorizing state by cutting off ultraviolet rays of sunlight and thereby effecting irradiation of visible light, and maintains the changed state, wherein a function to memorize and maintain coloring and decolorizing states alternately is expressed by arranging the color-changing means under such a condition that it is contacted or non-contacted with the photochromic layer.Type: GrantFiled: October 28, 2003Date of Patent: May 21, 2013Assignee: The Pilot Ink Co., Ltd.Inventors: Yutaka Shibahashi, Michiyuki Yasuda, Masahiro Irie
-
Patent number: 8403579Abstract: A water-based ink composition for a ballpoint pen wherein the initial start of writing and writing over time is good, and no blur in handwriting occur and a stable writing performance can be sustained and good handwriting can be continuously formed. A water-based ink composition for a ballpoint pen dissolving or dispersing a coloring agent in an aqueous medium. The aqueous medium substantially contains no water-soluble organic solvent and is composed of water. The water-based ink composition includes a thickening inhibitor together with a shear thinning viscosity-imparting agent. As the thickening inhibitor, one or two or more are selected from a group of polyalkylene glycol, polypropylene glycol derivatives, polyvinyl alcohol, polyvinyl pyrrolidone, cellulose-based polymer compounds, polymer compounds having a polyalkylene oxide group and/or surfactants having a polyoxyethylene group.Type: GrantFiled: September 26, 2007Date of Patent: March 26, 2013Assignee: The Pilot Ink Co., Ltd.Inventors: Nobuyuki Kitaoka, Yoshiaki Ono
-
Publication number: 20130029257Abstract: The present invention relates to a thermochromic color-memory toner containing: a microcapsule pigment encapsulating a thermochromic color-memory composition; and a binder resin, in which the microcapsule pigment shows a hysteresis characteristic that, in a temperature-rise process, decoloration starts when the temperature reaches t3 and the pigment completely reaches a decolored state in a temperature region of t4 or higher, and in a temperature-drop process, coloration starts when the temperature reaches t2 and the pigment completely reaches a colored state in a temperature region of ti or lower, and ti is in a range of from ?50 to 0° C. and t4 is in a range of from 50 to 150° C.Type: ApplicationFiled: November 13, 2009Publication date: January 31, 2013Applicant: THE PILOT INK CO., LTD.Inventors: Katsuyuki Fujita, Yoshiaki Ono, Yutaka Shibahashi
-
Patent number: 8322937Abstract: A thermochromic writing instrument contains a thermochromic ink, wherein a writing body 8 is accommodated in a barrel 2 movably in a longitudinal direction, an operation portion 5 is provided on the outer surface of the barrel 2, and a pen tip 81 of the writing body 8 is constituted so as to be projectable/retractable from/into a front-end hole 31 of the barrel 2 by operating the operation portion 5. The thermochromic ink 83 is contained in the inside of the writing body 8, the pen tip 81 capable of ejecting the thermochromic ink 83 is provided at the front end of the writing tool, and a friction portion 4 capable of thermally changing the color of the handwriting of the thermochromic ink 83 by the frictional heat generated when the handwriting is rubbed with the friction portion 4 is provided on the outer surface of the barrel 2.Type: GrantFiled: February 8, 2008Date of Patent: December 4, 2012Assignee: The Pilot Ink Co., Ltd.Inventors: Yoshinori Imamura, Nobuo Sekine, Masashi Ando
-
Patent number: 8282299Abstract: A friction body that produces frictional heat allowing development, disappearance or change of color of handwriting formed with a writing instrument for producing thermochromic handwriting, with the friction body having a friction coefficient of 0.2 to 1.0 when rubbed against paper surface, and a writing instrument for use in forming thermochromic handwriting which is equipped with the friction body and a writing instrument set including the friction body and a writing instrument for use in forming thermochromic handwriting.Type: GrantFiled: November 28, 2007Date of Patent: October 9, 2012Assignee: The Pilot Ink Co., Ltd.Inventors: Yoshihiro Ito, Shouichi Ohkawa, Katsuyuki Fujita
-
Publication number: 20120246909Abstract: An accessory making device (1) of the present invention is a device for making an accessory including a core (83) formed into a substantially ring shape by connecting both ends of a stretchable cord-like body (46) having rubber-like elasticity and a decoration main body (83) disposed around the core in such a manner so as to abut both ends thereof against each other in a contracted state so as to be reduced in axial length. The accessory making device (1) includes a long rigid holder (5). The holder (5) can retain connecting portions (47M, 47F) on both end sides of the cord-like body (46) with the connecting portions (47M, 47F) of the cord-like body (46) separated from each other, and can be inserted through the decoration main body (83).Type: ApplicationFiled: December 16, 2010Publication date: October 4, 2012Applicant: The Pilot Ink Co.,Ltd.Inventors: Natsuko Kobayashi, Haruka Kasuga, Akio Nakashima
-
Patent number: 8277696Abstract: The present invention relates to a thermochromic color-memory composition comprising a solubilized mixture of (I) an electron donating coloring organic compound, (II) an electron accepting compound and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (I) and (II): wherein R represents an alkyl group having 1 to 21 carbon atoms or an alkenyl group having 1 to 21 carbon atoms, and n represents an integer of from 1 to 3.Type: GrantFiled: May 12, 2010Date of Patent: October 2, 2012Assignee: The Pilot Ink Co., Ltd.Inventor: Yoshiaki Ono
-
Patent number: 8222183Abstract: The present invention provides a thermochromic coloring color-memory composition which effectively produce a characteristic that colors can be reversibly memorized and maintained and has applicability to various fields and a thermochromic coloring color-memory microcapsule pigment containing the composition. A thermochromic coloring color-memory composition comprising a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (A) and (B): wherein X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a methoxy group, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20.Type: GrantFiled: April 10, 2008Date of Patent: July 17, 2012Assignee: The Pilot Ink Co., Ltd.Inventor: Yoshiaki Ono
-
Publication number: 20120141188Abstract: The present invention relates to a reversibly thermochromic aqueous ink composition comprising: water; a water-soluble organic solvent; a reversibly thermochromic microcapsule pigment which contains a reversibly thermochromic composition comprising: (A) an electron donating coloring organic compound, (B) an electron accepting compound, and (C) a reaction medium which determines temperature at which color reactions between the components (A) and (B) occur; a comb type polymer dispersant having carboxyl groups on its side chains, an organic nitrogen sulfur compound, and a water-soluble resin, a writing instrument using the ink composition, and a writing instrument set comprising the writing instrument and a frictional body.Type: ApplicationFiled: August 16, 2010Publication date: June 7, 2012Applicant: THE PILOT INK CO., LTD.Inventor: Katsuyuki Fujita
-
Patent number: 8173052Abstract: A writing implement with a thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a reaction medium which controls color reactions of the components (A) and (B), wherein a complete decoloring temperature (T4) of the thermochromic coloring color-memory composition is 50° C. or higher and a coloring starting temperature (T2) of thermochromic coloring color-memory composition is 10° C. or lower regarding the color density-temperature curve, and the thermochromic coloring color-memory composition has color-memory ability at the ordinary temperature range.Type: GrantFiled: July 29, 2010Date of Patent: May 8, 2012Assignee: The Pilot Ink Co., Ltd.Inventor: Katsuyuki Fujita
-
Publication number: 20120082928Abstract: Disclosed is a decolorizable electrophotographic toner, including: a binder resin; and a colorant which contains at least a color developable compound and a color developing agent and is covered with an outer shell so as to have a capsule structure, wherein the number ratio of particles having an equivalent circle diameter of 0.6 ?m or more and 2.5 ?m or less of the toner when measured using a flow particle image analyzer after the toner is dispersed in an aqueous medium at a ratio of 0.08% by weight and the resulting dispersion is subjected to a stirring treatment in which stirring is performed at 5000 rpm for 30 minutes using a homogenizer (T-25 digital ULTRA-TURRAX (manufactured by IKA Japan K.K., provided with a shaft generator S25N-10G)) is 30% by number or less.Type: ApplicationFiled: October 3, 2011Publication date: April 5, 2012Applicants: TOSHIBA TEC KABUSHIKI KAISHA, THE PILOT INK CO., LTD., KABUSHIKI KAISHA PILOT CORPORATIONInventors: Masahiro Ikuta, Takahito Kabai, Takayasu Aoki, Tsuyoshi Itou
-
Patent number: 8147959Abstract: A color-change laminate in which a color tone derived from a porous layer is visually perceived in a dry state and a metallic lustrous property is visually perceived in a liquid-absorbed state of the porous layer caused by water application is excellent in luminance and which satisfies both of changing properties and decorative properties in the dry state and in the liquid-absorbed state. A color-change laminate includes a support having a metallic lustrous property and a porous layer provided on the surface of the support. The porous layer includes a low-refractive-index pigment and a transparent metallic lustrous pigment formed by coating a transparent core material with a metal oxide and/or a transparent metallic lustrous pigment having a color-flopping property all fixed onto a binder resin in a dispersed state and is different in transparency in a liquid-absorbed state and in a liquid-unabsorbed state.Type: GrantFiled: December 16, 2008Date of Patent: April 3, 2012Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Atsushi Sasada
-
Patent number: 8128304Abstract: A direct-fluid-supply writing implement has a pentip, an ink occlusion body connected to a rear end of the pentip, an ink tank that directly stores ink and is arranged at a rear of the ink occlusion body, a plurality of communication tubes that connects the ink tank to the ink occlusion body and a partition wall provided between the ink occlusion body and the ink tank. Forward end portions of the communication tubes are protruded forward from a front face of the partition wall, and are located inside the ink occlusion body. At least one of the communication tubes is provided such that a rear end of the communication tube is protruded backward from a rear face of the partition wall and is located inside the ink tank.Type: GrantFiled: March 9, 2007Date of Patent: March 6, 2012Assignee: The Pilot Ink Co., Ltd.Inventors: Tetsuhiro Kurita, Takao Inaba
-
Publication number: 20120049139Abstract: The present invention relates to a thermochromic color-memory composition comprising a solubilized mixture of (I) an electron donating coloring organic compound, (II) an electron accepting compound and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (I) and (II): wherein R represents an alkyl group having 1 to 21 carbon atoms or an alkenyl group having 1 to 21 carbon atoms, and n represents an integer of from 1 to 3.Type: ApplicationFiled: May 12, 2010Publication date: March 1, 2012Applicant: THE PILOT INK CO., LTD.Inventor: Yoshiaki Ono
-
Patent number: 8025961Abstract: In a liquid composition for metachromatic members which is to be applied to a metachromatic member having a support and provided thereon a porous layer formed by fixing therein a low refractive index pigment in a disperse state together with a binder resin, the liquid composition has a liquid medium and dissolved and/or dispersed therein a solid matter having a refractive index of from 1.3 to 1.8. Also disclosed is a metachromatic member set having this liquid composition and a metachromatic member. The liquid composition for metachromatic members satisfies permanent preservability of images, having superior density retention and shape retention of images formed in the metachromatic member and being suitable for uses in which impressions of hands, feet and the like are taken and preserved or in which written images or stamped images are preserved.Type: GrantFiled: November 13, 2008Date of Patent: September 27, 2011Assignee: The Pilot Ink Co., Ltd.Inventor: Akio Nakashima
-
Patent number: 7985701Abstract: A relatively lightweight wall adhering material includes a non-woven fabric or a water-resistant paper, having a coating weight of from 40 to 150 g/m2 as a substrate and provided thereon a porous layer in an amount of from 5 to 50 g/m2. The porous layer includes a binder resin and a low-refractive-index pigment dispersed in the binder resin and firmly fixed thereto. The water-discoloring wall adhering material has a gross weight of from 50 to 200 g/m2. The water-discoloring wall adhering material has excellent convenience at the time of production and use, promptly forms clear image to perceive, and is difficult to fall down when adhered to a wall.Type: GrantFiled: July 12, 2007Date of Patent: July 26, 2011Assignee: The Pilot Ink Co., Ltd.Inventor: Akio Nakashima
-
Patent number: 7946777Abstract: A multi-refill writing instrument includes a barrel, writing bodies accommodated in the barrel so as to be movable back and forth, elastic bodies urging the writing bodes backward, operating bodies connected to rear ends of the corresponding writing bodies and window holes formed in a side wall of the barrel so as to extend in the axial direction. The operating bodies protrude from the barrel to an outside through the window holes in the radial direction, one of the operating bodies slides forward along the window hole so that a nib of the writing body connected to the one operating body protrudes from the barrel through a front hole, and a nib of another writing body in a protruding state is retracted into the barrel, and the writing bodies and the operating bodes are pulled out from the barrel and inserted into the barrel.Type: GrantFiled: March 29, 2006Date of Patent: May 24, 2011Assignee: The Pilot Ink Co., Ltd.Inventors: Osami Yamauchi, Masashi Ando