Patents Assigned to Mitsubishi Pencil Co., Ltd.
  • Patent number: 9302529
    Abstract: A mechanical pencil having a rotational drive mechanism which gradually rotates a writing lead on application of writing pressure and allowing rotational operation of the writing lead to be known reliably. First and second cam faces 6a and 6b are respectively formed at one end face and the other end face of a rotor 6 in an axial direction, and first and second fixed cam faces 13a and 14a arranged on the body cylinder side so as to respectively face the first and the second cam faces are provided to form the rotational drive mechanism for the writing lead. A plurality of grooves 8a in the axial direction are formed at a slider 8 of a pipe end 7 which projects forwardly from a body cylinder 1. Therefore, the user can see the grooves 8a (provided for the slider 8) rotated by rotation of the rotor 6.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: April 5, 2016
    Assignee: MITSUBISHI PENCIL CO., LTD.
    Inventors: Hirotake Izawa, Takeshi Kobayashi, Kyo Nakayama
  • Publication number: 20150317950
    Abstract: It is an object of the present invention to make full use of energy stored in storage capacitors connected in parallel to display pixels and prevent variations of display performance and easily adjust the display without replacing the storage capacitors. Storage capacitors 25 that can store charge to continuously move electrophoretic particles in a direction corresponding to a drive voltage for a time longer than a reference frame period even after a drive voltage is turned off by one selection are provided in parallel to respective display pixels (20), pause periods are provided in scan line units or in group units made up of a plurality of continuous scan lines and pause periods are provided so that a scanning interval of each scan line unit is shorter than a time within which the storage capacitors (25) can move electrophoretic particles even after the drive voltage is turned off.
    Type: Application
    Filed: October 24, 2013
    Publication date: November 5, 2015
    Applicant: MITSUBISHI PENCIL CO., LTD.
    Inventors: Masashi Sakagami, Kiyoshi Fujisawa
  • Patent number: 9162515
    Abstract: A writing implement that prevents flow of air into an ink tank and prevents writing failure while allowing for productivity. The writing implement includes a writing implement refill having: an ink tank composed of films storing ink; a joint connected to a tip of the ink tank; and a writing tip connected to a tip of the joint. An inner circumferential surface of the tip of the ink tank covers an outer circumferential surface of a rear end of the joint. A covering member of a ring shape covers from outside an area where the tip of the ink tank covers the outer circumferential surface of the rear end of the joint.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: October 20, 2015
    Assignee: MITSUBISHI PENCIL CO., LTD.
    Inventors: Seiichi Maruyama, Takeo Fukumoto, Kazuhiko Furukawa
  • Patent number: 8828369
    Abstract: Provided is a liquid cosmetic comprising at least an inorganic pigment, a dispersant, a film forming agent and water, wherein the dispersant is a homopolymer or a copolymer obtained by polymerizing a raw material monomer of at least one compound selected from acrylic acid, methacrylic acid or (C1 to C4 and C8) alkyl esters thereof, and the film forming agent comprises an emulsion of a homopolymer (excluding a homopolymer comprising only polystyrene) or a copolymer obtained by polymerizing a raw material monomer of at least one compound selected from acrylic acid, methacrylic acid, (C1 to C4 and C8) alkyl esters thereof or styrene.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: September 9, 2014
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Masaaki Morita, Hiroshi Sato
  • Patent number: 8820569
    Abstract: A fuel container includes a container body having a fuel discharge port and an interior spacing. A body of liquid fuel is filled in the interior spacing of the container body. Follower units are provided in the container body, in contact with at least a part of an end of the body of the liquid fuel. Solid follower auxiliary members are interposed between the follower units and the body of liquid fuel to be optically detectable.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: September 2, 2014
    Assignees: Casio Computer Co., Ltd., Mitsubishi Pencil Co., Ltd.
    Inventors: Yasunari Kabasawa, Yoshihisa Suda, Takahiro Osada, Kozi Nishimura, Toshimi Kamitani
  • Patent number: 8777506
    Abstract: A liquid applicator includes a liquid pressing mechanism (liquid pressing means) for pressurizing an application liquid inside a main body so as to supply application liquid to an applying member by the pressing of the liquid pressing mechanism. The applying member is made of an elastic material and is formed with a communication path of a passage hole for communication between the inside and outside of main body, and an applying portion of the applying member is formed projected further forward from an ejection opening of communication path. The liquid applicator that can simply apply an application liquid, even it is high in viscosity, over a wide area.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: July 15, 2014
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Tetsuaki Akaishi, Hiroaki Koyama
  • Patent number: 8741429
    Abstract: A fixing heater is provided that employs, as a heating element, a material having small heat capacity and excellent wear resistance. A metal or semi-metal compound that can act as an electrical conduction inhibiting material is mixed into a carbon-containing resin such as a furan resin, chlorinated vinyl chloride resin, etc., and a pattern of a heating element is formed on a substrate, by screen printing, and then is sintered at temperature of about 1000° C. to obtain a fixing heater including amorphous carbon and having NTC characteristics.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: June 3, 2014
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Noboru Kanba, Yoshihisa Suda
  • Publication number: 20140126864
    Abstract: An optical connector has: a holding member having an accommodating portion formed at an end thereof for accommodating a collimator lens and an insertion hole formed at an opposite end thereof for inserting an optical fiber; and a resin joint having a first insertion hole formed at an end thereof for inserting the holding member and a second insertion hole formed at an opposite end thereof for inserting the optical fiber. The collimator lens and the optical fiber are positioned by making at least one of the collimator lens and an end surface of the optical fiber abut against a recess formed in the holding member near the accommodating portion. The resin joint has a fixing portion formed therein for fixing a part of the optical fiber positioned in the holding member inserted via the first insertion hole into the resin joint, the part being exposed from the holding member.
    Type: Application
    Filed: April 2, 2012
    Publication date: May 8, 2014
    Applicant: MITSUBISHI PENCIL CO., LTD.
    Inventors: Hitoshi Suzuki, Takeshi Kobayashi, Kiyoshi Iwamoto
  • Patent number: 8678691
    Abstract: A writing implement. A tubular outer shell (11) is provided outside a grip member (10), an inner shell (12) made of a soft material is provided entirely inside the outer shell (11), and the inner shell (12) is covered with the moderately hard outer shell (11). Thus, while the inner shell (12) inside can allow the user to feel the fit, the outer shell (11) outside prevents the inner shell (12) from getting damaged or worn even if the inner shell (12) is soft, so as to fully secure durability of the grip member (10). Since a thin part (11A) of the outer shell (11) is sufficiently thin on a swell (13), the excellent fit can be given to the user even if the outer shell (11) is formed of a hard elastic material to fully secure the durability of the grip member (10).
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: March 25, 2014
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Masayoshi Kiritake, Nobuaki Shimane, Kengo Nagaoka
  • Publication number: 20140016982
    Abstract: A mechanical pencil having a rotational drive mechanism which gradually rotates a writing lead on application of writing pressure and allowing rotational operation of the writing lead to be known reliably. First and second cam faces 6a and 6b are respectively formed at one end face and the other end face of a rotor 6 in an axial direction, and first and second fixed cam faces 13a and 14a arranged on the body cylinder side so as to respectively face the first and the second cam faces are provided to form the rotational drive mechanism for the writing lead. A plurality of grooves 8a in the axial direction are formed at a slider 8 of a pipe end 7 which projects forwardly from a body cylinder 1. Therefore, the user can see the grooves 8a (provided for the slider 8) rotated by rotation. of the rotor 6.
    Type: Application
    Filed: April 2, 2012
    Publication date: January 16, 2014
    Applicant: MITSUBISHI PENCIL CO., LTD.
    Inventors: Hirotake Izawa, Takeshi Kobayashi, Kyo Nakayama
  • Patent number: 8605353
    Abstract: A liquid for electrophoretic display which makes it possible to display a black color having a low reflectance or a color having a high color saturation and a white color having a high reflectance and display them at high contrast and which inhibits coagulation of white fine particles and is excellent in stability can be prepared by using a liquid for electrophoretic display containing at least white fine particles, resin particles colored by a dye and/or a pigment and a liquid phase dispersion medium, wherein fine particles in which a difference in a refractive index from the liquid phase dispersion medium is 0 to 0.05 are contained and have an average particle diameter of 50 to 500 nm. The electrophoretic display device of the present invention is prepared by filling the liquid for electrophoretic display between a pair of substrates, and the electronic device of the present invention is characterized by mounting therein the electrophoretic display device.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: December 10, 2013
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Yosuke Setagawa
  • Patent number: 8562235
    Abstract: An ink composition for an aqueous ink ball point pen with which a sufficiently high line intensity is obtained even when a thermochromic microcapsule pigment having a small average particle diameter is used and which is excellent in storage stability and a writing performance is provided with such a constitution that it contains at least a microcapsule pigment which has an average particle diameter of 0.1 to 1.0 ?m and in which a wall film is formed by an amino resin and a chemical substance which is a polymer comprising ketone as a main chain and has an acidic functional group in the chemical structure and which has an acid value of 3 to 40 (mgKOH/g).
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: October 22, 2013
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Hideaki Toomi, Masanao Yano, Takeshi Hayakawa, Syuji Ichikawa
  • Publication number: 20130120828
    Abstract: The method for manufacturing an electrophoresis display device suppresses deterioration of adhesion between the upper surface of a structure and a counter electrode substrate and improving durability. The method includes: forming a plurality of cells on a first electrode substrate, each of the cells being composed of an insulating structure; heating a film base material with a thermoplastic adhesive layer formed on the surface, wherein the film base material is in contact with the upper surface of the structure and peeling the film base material wherein the adhesive layer is softened, thereby transferring the adhesive layer to the front surface of the structure; filling the cells with the electrophoresis ink; and bonding the upper surface of the structure and a second electrode substrate to each other while heating the upper surface and the second electrode substrate at a temperature lower than that in the adhesive layer transferring step.
    Type: Application
    Filed: May 9, 2011
    Publication date: May 16, 2013
    Applicant: MITSUBISHI PENCIL CO., LTD.
    Inventor: Daisen Kato
  • Patent number: 8435698
    Abstract: A fuel container 1 comprises: a container main body 2 in which a liquid fuel 4 is housed and fuel exhausting ports 24 and 31 to exhaust the liquid fuel 4 to the outside is formed; a following auxiliary member 71 which is solid, and situated on an end side of the liquid fuel 4 in the container main body 2, the following auxiliary member 71 moving to the sides of the fuel exhausting ports 24 and 31 as the liquid fuel 4 is exhausted; and a following body 5 situated on the end side of the liquid fuel 4, and packed in a space formed by an inner peripheral surface of the container main body 2 and an outer peripheral surface of the following auxiliary member 71, the following body 5 moving to the fuel exhausting ports 24 and 31 as the liquid fuel 4 is exhausted. Then, at least one of the inner peripheral surface of the container main body 2 and the outer peripheral surface of the following auxiliary member 71, which are faced to each other, is made to be uneven.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 7, 2013
    Assignees: Casio Computer Co., Ltd., Mitsubishi Pencil Co., Ltd.
    Inventors: Yugo Matsuda, Yasunari Kabasawa, Toshimi Kamitani, Kiyoshi Fujisawa
  • Patent number: 8337107
    Abstract: A writing lead (10) is grasped and released by reciprocation of a chuck (3) provided in a body cylinder (1) so as to inch the writing lead forward and a rotational drive mechanism is provided for rotationally driving a rotor (5) in one direction in conjunction with retreat operation by the writing pressure applied to the writing lead and forward movement by releasing the writing pressure. A pipe support member (8) for supporting a pipe end (7) is accommodated in a base (1A) which constitutes a front end portion of the body cylinder, and a retreat drive mechanism is provided for gradually retreating the pipe support member into the body cylinder in conjunction with rotational drive operation of the rotor. With the above-mentioned structure, a pipe-slide type mechanical pencil can maintain an amount of projection of the writing lead from the pipe end within a certain range.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: December 25, 2012
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Norio Ohsawa, Takeo Fukumoto, Yoshitoshi Osano, Takeshi Kobayashi, Hirotake Izawa, Kyo Nakayama
  • Patent number: 8328446
    Abstract: A chuck unit (4) for grasping a writing lead (10) and a rotor (6) arranged to be movable in a direction of rotation and an axial direction within a body cylinder (1) are provided. First and second cam faces (6a) and (6b) are respectively formed at one end face and another end face of the rotor in the axial direction, and first and second fixed cam faces (13a) and (17a) are arranged on the body cylinder side to face the first and second cam faces respectively. The first cam face in the rotor is brought into abutment with and meshed with the first fixed cam face by retreat operation of the chuck unit under writing pressure, and the second cam face in the rotor is brought into abutment with and meshed with the second fixed cam face by releasing the writing pressure, so that the rotor rotates, whereby the writing lead also rotates.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: December 11, 2012
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Hirotake Izawa, Takeo Fukumoto, Norio Ohsawa, Kyo Nakayama, Yoshitoshi Osano
  • Patent number: 8282303
    Abstract: A liquid applicator 1 is provided with a liquid pressing mechanism (liquid pressing means) 6 for pressurizing an application liquid 4 within a main body 2, and supplies an applying part 10 at a front end of the main body with the application liquid 4 by pressing of the liquid pressing mechanism 6, wherein the applying part 10 is made of an elastic material, is formed with a communication channel 24 for connecting inside and outside of the main body, and is provided with an application portion 10a so as to further protrude to the front side from an ejection port 24a of the communication channel 24, and in the application portion 10a, a portion 3 (mm) from a front end thereof has a vertical-direction repulsion force of 0.01 to 1.40 (N), resulting that it is possible to provide a liquid applicator with an appropriate hardness and bending elastic force, having no application unevenness and good application characteristics.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: October 9, 2012
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Takashi Umeno, Mitsuru Endou, Tetsuaki Akaishi, Hiroaki Koyama
  • Publication number: 20120251222
    Abstract: In order to provide an ink composition for an aqueous ink ball point pen with which a sufficiently high line intensity is obtained even when a thermochromic microcapsule pigment having a small average particle diameter is used and which is excellent in storage stability and a writing performance and an aqueous ink ball point pen, a composition of the above ink composition for an aqueous ink ball point pen is provided with such a constitution that it contains at least a microcapsule pigment which has an average particle diameter of 0.1 to 1.0 ?m and in which a wall film is formed by an amino resin and a chemical substance which is a polymer comprising ketone as a main chain and has an acidic functional group in the chemical structure and which has an acid value of 3 to 40 (mgKOH/g).
    Type: Application
    Filed: December 2, 2010
    Publication date: October 4, 2012
    Applicant: MITSUBISHI PENCIL CO., LTD.
    Inventors: Hideaki Toomi, Masanao Yano, Takeshi Hayakawa, Syuji Ichikawa
  • Patent number: 8215860
    Abstract: In the cosmetic storage type applicator having a structure for supplying a cosmetic to an applying part from the interior of a barrel cylinder, a cap removably attached to the front part of the barrel cylinder for covering the applying part and plastic mouthpiece is provided; an inner sleeve having a tapered inside diameter toward the front end is arranged inside the body of cap and integrally formed with the cap body; and the inner peripheral surfaces and from the inner sleeve to the cap body are formed with a smooth surface without any step.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: July 10, 2012
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Junya Uehara, Nobuyuki Nakajima, Masaaki Morita
  • Patent number: 8173318
    Abstract: The fuel reservoir for a fuel cell is a fuel reservoir detachably connected with a fuel cell main body, and it is equipped with a fuel-storing vessel of a tube type for storing a liquid fuel and a fuel discharge part; the fuel discharge part is provided with a valve for sealing communication between the inside and the outside of the above fuel-storing vessel; and a follower which seals the liquid fuel and moves as the liquid fuel is consumed is disposed in the rear end part of the liquid fuel stored. The valve assumes a structure in which a slit is formed in an elastic material and a structure in which a valve member is pressed by a resilient body.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: May 8, 2012
    Assignees: Mitsubishi Pencil Co., Ltd., Casio Computer Co., Ltd.
    Inventors: Takahiro Osada, Yoshihisa Suda, Toshimi Kamitani, Kunitaka Yamada, Kouji Nishimura, Yasunari Kabasawa