Patents by Inventor Youichi Itagaki
Youichi Itagaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11221566Abstract: An image forming apparatus performs primary transfer of single-color toner image onto an intermediate transfer belt and performs secondary transfer of the toner image onto a sheet, and includes: single image forming unit forming the single-color toner image; single toner supply bottle containing replenishment toner; and first and second support members supporting the belt. The image forming unit is closer to the first member than the second member in a belt rotation direction. The bottle includes: single bottle body; and supply unit near one end of the body in the rotation direction. The other end is (i) closer to the second member than the one end is in the rotation direction and (ii) distant from the image forming unit in a support member direction from the first member toward the second member by one to three times a length of the image forming unit in the support member direction.Type: GrantFiled: June 4, 2020Date of Patent: January 11, 2022Assignee: KONICA MINOLTA, INC.Inventors: Koji Soda, Yusuke Hashimoto, Naoki Nonoyama, Youichi Itagaki, Hitomi Kawata
-
Publication number: 20200393777Abstract: An image forming apparatus that performs primary transfer of single-color toner image onto an intermediate transfer belt and performs secondary transfer of the toner image onto a sheet, and includes: single image forming unit forming the single-color toner image; single toner supply bottle containing replenishment toner; and first and second support members supporting the belt. The image forming unit is closer to the first member than the second member in a belt rotation direction. The bottle includes: single bottle body; and supply unit near one end of the body in the rotation direction. The other end is (i) closer to the second member than the one end is in the rotation direction and (ii) distant from the image forming unit in a support member direction from the first member toward the second member by one to three times a length of the image forming unit in the support member direction.Type: ApplicationFiled: June 4, 2020Publication date: December 17, 2020Inventors: Koji SODA, Yusuke HASHIMOTO, Naoki NONOYAMA, Youichi ITAGAKI, Hitomi KAWATA
-
Patent number: 10571826Abstract: A developer supplying device for supplying a developer to a subject to be supplied includes: a housing; and a stirring member rotatable around a rotational axis in the housing, wherein the stirring member includes: a main body that includes a flexible sheet, extends away from the rotational axis, and is in contact with an inner wall surface of the housing; and a cut part formed in the main body, and the cut part projects from the main body when the main body is bent along with rotation of the stirring member.Type: GrantFiled: July 26, 2018Date of Patent: February 25, 2020Assignee: KONICA MINOLTA, INC.Inventors: Hiroshi Tanimoto, Yasuaki Tomoda, Youichi Itagaki
-
Publication number: 20190064701Abstract: A developer supplying device for supplying a developer to a subject to be supplied includes: a housing; and a stirring member rotatable around a rotational axis in the housing, wherein the stirring member includes: a main body that includes a flexible sheet, extends away from the rotational axis, and is in contact with an inner wall surface of the housing; and a cut part formed in the main body, and the cut part projects from the main body when the main body is bent along with rotation of the stirring member.Type: ApplicationFiled: July 26, 2018Publication date: February 28, 2019Inventors: Hiroshi TANIMOTO, Yasuaki TOMODA, Youichi ITAGAKI
-
Patent number: 9500984Abstract: A toner supply device includes a toner storage, a supply opening, a toner conveyer, a toner supply opening, and an air passage. The toner storage stores toner. Through the supply opening, the toner is supplied to a developing device. The toner conveyer includes an area of space different from an area of space of the toner storage. The toner conveyer conveys the toner stored in the toner storage to supply the toner from the supply opening to the developing device. Through the toner supply opening, the toner is supplied from the toner storage to the toner conveyer. The air passage is at a position different from the toner supply opening. The air passage connects the toner storage to the toner conveyer so as to allow air flowing through the supply opening into the toner conveyer to be supplied to the toner storage through the air passage.Type: GrantFiled: December 13, 2013Date of Patent: November 22, 2016Assignee: KONICA MINOLTA, INC.Inventors: Takaaki Namiki, Isao Kawakami, Youichi Itagaki, Sho Karakama, Shogo Asaoka
-
Publication number: 20140169834Abstract: A toner supply device includes a toner storage, a supply opening, a toner conveyer, a toner supply opening, and an air passage. The toner storage stores toner. Through the supply opening, the toner is supplied to a developing device. The toner conveyer includes an area of space different from an area of space of the toner storage. The toner conveyer conveys the toner stored in the toner storage to supply the toner from the supply opening to the developing device. Through the toner supply opening, the toner is supplied from the toner storage to the toner conveyer. The air passage is at a position different from the toner supply opening. The air passage connects the toner storage to the toner conveyer so as to allow air flowing through the supply opening into the toner conveyer to be supplied to the toner storage through the air passage.Type: ApplicationFiled: December 13, 2013Publication date: June 19, 2014Applicant: KONICA MINOLTA, INC.Inventors: Takaaki NAMIKI, Isao KAWAKAMI, Youichi ITAGAKI, Sho KARAKAMA, Shogo ASAOKA
-
Patent number: 7866898Abstract: Disclosed is an optical communication module including a module base in an approximately rectangular shape in which the light path member is introduce from one end surface in a longitudinal direction, a cover member provided at an upper portion of the module base and a plurality of pairs of conductive members in which each of the conductive members constituting a pair are respectively disposed at both outside surfaces of the module base and which are electrically connected to the light path member, and a concave portion is formed at an upper surface of the module base, the cover member is formed so as to cover an opening of the concave portion, and the conductive members are formed so as to extend for equal lengths toward an upper surface side and a lower surface side of the module base from a center line of a height direction of the outside surfaces.Type: GrantFiled: March 10, 2009Date of Patent: January 11, 2011Assignee: Mitsumi Electric Co., Ltd.Inventors: Yoshihiro Ishikawa, Shinichi Asano, Youichi Itagaki
-
Patent number: 7856164Abstract: A waveguide device that guides light through a core part formed in a cladding part is disclosed. The waveguide device includes a waveguide part formed in the cladding part so as to have the same refractive index as the refractive index of the core part so that the waveguide part communicates with the core part, and a reflective part configured to perform at least one of reflecting the light guided by the core part toward the waveguide part and reflecting light from the waveguide part toward a direction in which the light is guided by the core part.Type: GrantFiled: August 31, 2006Date of Patent: December 21, 2010Assignee: Mitsumi Electric Co., Ltd.Inventor: Youichi Itagaki
-
Publication number: 20090257720Abstract: Disclosed is an optical communication module including a module base in an approximately rectangular shape in which the light path member is introduce from one end surface in a longitudinal direction, a cover member provided at an upper portion of the module base and a plurality of pairs of conductive members in which each of the conductive members constituting a pair are respectively disposed at both outside surfaces of the module base and which are electrically connected to the light path member, and a concave portion is formed at an upper surface of the module base, the cover member is formed so as to cover an opening of the concave portion, and the conductive members are formed so as to extend for equal lengths toward an upper surface side and a lower surface side of the module base from a center line of a height direction of the outside surfaces.Type: ApplicationFiled: March 10, 2009Publication date: October 15, 2009Applicant: Mitsumi Electric Co., Ltd.Inventors: Yoshihiro ISHIKAWA, Shinichi Asano, Youichi Itagaki
-
Publication number: 20090257713Abstract: A waveguide device that guides light through a core part formed in a cladding part is disclosed. The waveguide device includes a waveguide part formed in the cladding part so as to have the same refractive index as the refractive index of the core part so that the waveguide part communicates with the core part, and a refractive part configured to perform at least one of reflecting the light guided by the core part toward the waveguide part and reflecting light from the waveguide part toward a direction in which the light is guided by the core part.Type: ApplicationFiled: August 31, 2006Publication date: October 15, 2009Inventor: Youichi Itagaki
-
Publication number: 20090116795Abstract: To provide a wiring technique which can easily realize the high speed communication between apparatuses and the conventional electrical communication at a low cost. The optic cable constituted of the core unit 12 and the clad unit 13 is extended on the film substrate 11, the photoelectric conversion element 15 which optically couples with the core unit 12 is provided, and the metal wiring 14 which is electrically connected to the photoelectric conversion element 15 is extended toward the ends of the light guide direction.Type: ApplicationFiled: June 21, 2006Publication date: May 7, 2009Inventors: Yoshihiro Ishikawa, Youichi Itagaki
-
Patent number: 6986952Abstract: A chemical compound capable of emitting visible light and having electrical conductivity comprises a main chain that consists of at least one substituted or non-substituted 2,5-thiophenediyl group and at least one substituted or non-substituted 9-carbazolyl group that bonds to at least one of two terminals of the main chain. The chemical compound is used in a luminescent material, an EL device that includes a luminous layer, and a display apparatus that includes a plurality of EL devices.Type: GrantFiled: June 10, 2003Date of Patent: January 17, 2006Assignee: Mitsumi Electric Co., Ltd.Inventors: Youichi Itagaki, Norio Hasegawa
-
Publication number: 20040166363Abstract: A chemical compound capable of emitting visible light and having electrical conductivity comprises a main chain that consists of at least one substituted or non-substituted 2,5-thiophenediyl group and at least one substituted or non-substituted 9-carbazolyl group that bonds to at least one of two terminals of the main chain. The chemical compound is used in a luminescent material, an EL device that includes a luminous layer, and a display apparatus that includes a plurality of EL devices.Type: ApplicationFiled: June 10, 2003Publication date: August 26, 2004Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Youichi Itagaki, Norio Hasegawa
-
Patent number: 6709772Abstract: An organic electrically conductive compound represented by general formula (1): and an organic electroluminescent device using the compound are provided, wherein n is an integer from 1 to 10, k represents any of integers from 2 to n+1, Ar1, Ar1′, Ar2, and Ar2′ are substituted or non-substituted aromatic hydrocarbon rings or heterocyclic rings that share a bond between carbons at 2,3-positions or 4,5-positions of a pyrrole ring in general formula (1) and are fused with the pyrrole ring, respectively, Ar3 is a divalent group of a substituted or non-substituted aromatic hydrocarbon or heterocyclic compound, and R1, R1′, Rk, and Rk′ are aliphatic hydrocarbon groups or substituted or non-substituted aryl or heterocyclic groups, respectively.Type: GrantFiled: September 27, 2002Date of Patent: March 23, 2004Assignee: Mitsumi Electric Co., Ltd.Inventors: Norio Hasegawa, Akira Shiga, Youichi Itagaki
-
Patent number: 6706424Abstract: An organic electrically conductive compound represented by general formula (1): and an organic elctroluminescent device using the compound are provided, wherein n is an integer from 2 to 10, k represents any of integers from 1 to n, Ar1, Ar1′, Ar2, and Ar2′ are substituted or non-substituted aromatic hydrocarbon rings or heterocyclic rings that share a bond between carbons at 2,3-positions or 4,5-positions of a pyrrole ring in general formula (1) and are fused with the pyrrole ring, respectively, and Rk and Rk′ are aliphatic hydrocarbon groups or substituted or non-substituted aryl or heterocyclic groups, respectively.Type: GrantFiled: September 27, 2002Date of Patent: March 16, 2004Assignee: Mitsumi Electric Co., Ltd.Inventors: Norio Hasegawa, Akira Shiga, Youichi Itagaki
-
Publication number: 20030091863Abstract: An organic electrically conductive compound represented by general formula (1): 1Type: ApplicationFiled: September 27, 2002Publication date: May 15, 2003Inventors: Norio Hasegawa, Akira Shiga, Youichi Itagaki
-
Publication number: 20030087128Abstract: An organic electrically conductive compound represented by general formula (1): 1Type: ApplicationFiled: September 27, 2002Publication date: May 8, 2003Inventors: Norio Hasegawa, Akira Shiga, Youichi Itagaki