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2.发明公开
公开(公告)号：EP4349926A1
公开(公告)日：2024-04-10
申请号：EP22815831.7
申请日：2022-05-16
发明人： OZEKI, Yushi
摘要： A writing instrument ink composition includes at least a pigment containing a uric acid pigment, and a solvent.
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3.发明公开
公开(公告)号：EP4219186A1
公开(公告)日：2023-08-02
申请号：EP21872357.5
申请日：2021-09-17
申请人： The Pilot Ink Co., Ltd , Kabushiki Kaisha Pilot Corporation (also trading as Pilot Corporation)
IPC分类号： B43K19/02 , C09K9/02 , C09D201/00 , C09D11/037 , C09D11/17 , C09D11/322 , B43K5/00 , B43K7/00 , B43K8/02 , B43K29/02 , C09D7/41 , C09D7/63
摘要： [Problems] To provided are a reversibly thermochromic composition that shows black during color development by using a fluoran derivative having a specific structure as an electron-donating color-developing organic compound, turns colorless during decoloration, and is excellent in light resistance and a microcapsule pigment encapsulating the reversibly thermochromic composition.
[Solution] Disclosed is a reversibly thermochromic composition including: (a) a fluoran derivative having a specific structure as an electron-donating color-developing organic compound; (b) a compound having a specific structure as an electron-accepting compound; and (c) a reaction medium which reversibly induces an electron transfer reaction between the component (a) and the component (b) in a specific temperature range, and a reversibly thermochromic microcapsule pigment encapsulating the reversibly thermochromic composition.-
公开(公告)号：EP4082806A1
公开(公告)日：2022-11-02
申请号：EP21171596.6
申请日：2021-04-30
发明人： KOKOZIDIS, Michail
摘要： The present disclosure relates to a writing instrument. The writing instrument comprises a self-disinfecting material. The self-disinfecting material comprises a polymer, a photosensitizing additive configured to convert oxygen to a reactive oxygen species when exposed to light, and a light scattering component.
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公开(公告)号：EP2684704B1
公开(公告)日：2021-09-01
申请号：EP13175562.1
申请日：2013-07-08
发明人： Lugert, Gerhard , Appel, Reiner , Heuler, Baukis , Volodka, Tilo
IPC分类号： B43K5/00 , B43K21/00 , B43K23/008 , B43K7/00 , B43K8/00
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公开(公告)号：EP2368721B1
公开(公告)日：2021-08-11
申请号：EP11169482.4
申请日：2008-05-21
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公开(公告)号：EP3053970B8
公开(公告)日：2021-03-10
申请号：EP14849348.9
申请日：2014-09-19
发明人： NISHIJIMA Chihiro , SAKANE Noriko , TAKEUCHI Yoji
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公开(公告)号：EP3733789A1
公开(公告)日：2020-11-04
申请号：EP18896692.3
申请日：2018-12-21
发明人： HAGA, Hisato
摘要： Provided is a dispersion liquid of colored resin fine particles for an aqueous ink having excellent stability and a sufficient drawn line intensity even when the amount of dye that can be included inside the colored resin fine particle for the aqueous ink is increased; an aqueous ink composition for a writing instrument that is prepared by using the dispersion liquid of the colored resin fine particle as a colorant and that is suitable for writing instruments such as felt-tip pens, marking pens, and ballpoint pens; and a writing instrument loaded with the composition. The dispersion liquid of colored resin fine particles for an aqueous ink includes colored resin fine particles dispersed in water,
the colored resin fine particles composed of at least a cyclohexyl (meth) acrylate monomer, and a basic dye or an oil-soluble dye, in which the content of the cyclohexyl (meth) acrylate monomer is 30% by mass or more based on the total polymer component constituting the colored resin fine particles, and the content of the basic dye or the oil-soluble dye is 15% by mass or more based on the total polymer component.-
公开(公告)号：EP3450513A1
公开(公告)日：2019-03-06
申请号：EP16900519.6
申请日：2016-05-30
摘要： A glittering writing/drawing material composition includes a solvent, a lustrous particle having metallic luster and dispersed in the solvent, and at least one dye dissolved in the solvent. A hue difference between a first hue and a second hue is 108° or less in a hue circle in a Munsell color system, where the first hue is measured on the lustrous particle in a solid state with a spectrocolorimeter, and the second hue is measured on a liquid composition obtained by removing the lustrous particle from the glittering writing/drawing material composition and applied on a white wood-free paper with the spectrocolorimeter. The lustrous particle has a coverage of 1.0% or more and 70.0% or less on a surface layer of a drawing object formed by the glittering writing/drawing material composition.
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公开(公告)号：EP2860045B1
公开(公告)日：2018-09-26
申请号：EP13800078.1
申请日：2013-06-07
CPC分类号： B43K1/082 , B43K1/08 , B43K7/00 , B43K7/005 , B43K7/02 , B43K7/10 , B43K7/12 , B43K23/12 , B43K24/023
摘要： Provided is a ballpoint pen having a simple structure and which is capable of writing lines having different widths, using one writing tip and without using any particular operation during writing. Also provided is a ballpoint pen capable of writing lines having different widths, with a single writing ball by using two writing portions. An outer member (50) covering the outer circumference of a holder (21) covers a section that reaches as far as a narrowed section (23) of the holder (21) and has an outer member tip end portion (51) capable of coming in contact with a writing surface at the same time that the writing ball (30) does. An ink is used that is capable of spreading between the writing ball (30) and the contact section of the writing surface and between the outer member tip end portion (51) and the contact section of the writing surface, in a state in which the writing ball (30) and the outer member tip end portion (51) are in contact with the writing surface at the same time. In addition, the relative position of the outer member (50) and the holder (21) can be changed to a holder retracted position and a holder protruding position. When the relative position is in the holder retracted position, the writing ball (30) and the tip section of the outer member (50) can be in contact with the writing surface at the same time.
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