Patents by Inventor Masana Shiba

Masana Shiba 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).

  • Publication number: 20230189540
    Abstract: A solar cell module includes a first substrate and a plurality of photoelectric conversion elements disposed on the first substrate. Each of the plurality of photoelectric conversion elements includes a first electrode, an electron transport layer, a perovskite layer, a hole transport layer, and a second electrode. In at least two of the photoelectric conversion elements adjacent to each other, the hole transport layers are extended continuous layers; and the first electrodes, the electron transport layers, and the perovskite layers in the at least two of the photoelectric conversion elements adjacent to each other are separated by the hole transport layer. The hole transport layer includes, as hole transport material, a polymer having a weight average molecular weight of 2,000 or more or a compound having a molecular weight of 2,000 or more.
    Type: Application
    Filed: July 15, 2020
    Publication date: June 15, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Tamotsu Horiuchi, Takahiro Ide, Yuuji Tanaka, Nozomu Tamoto, Naomichi Kanei, Masana Shiba
  • Publication number: 20220102651
    Abstract: Provided is a photoelectric conversion element including a first electrode, an electron-transporting layer, a hole-transporting layer, and a second electrode, wherein the hole-transporting layer includes a hole-transporting material, an alkali metal salt, and a hypervalent iodine compound.
    Type: Application
    Filed: January 30, 2020
    Publication date: March 31, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuuji TANAKA, Tamotsu Horiuchi, Nozomu Tamoto, Naomichi Kanei, Takahiro lde, Tetsuya Honda, Masana Shiba
  • Patent number: 11056600
    Abstract: Provided is a photoelectric conversion element including a first electrode, an electron-transporting layer, a hole-transporting layer, and a second electrode, wherein the hole-transporting layer and the second electrode are in contact with each other, and the hole-transporting layer satisfies the following formula: 0%<Rc(50)?0.75% where an average thickness of the hole-transporting layer is determined as X (nm), and Rc(50) is a ratio of an area of projected parts that are projected from a standard line towards the second electrode, where the standard line is present at a position that is away, by X+50 (nm), from an opposite surface of the hole-transporting layer to a surface of the hole-transporting layer in contact with the second electrode.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: July 6, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuya Honda, Masana Shiba, Yuuji Tanaka, Nozomu Tamoto, Tamotsu Horiuchi
  • Publication number: 20210167287
    Abstract: A photoelectric conversion element including: a first electrode; a perovskite layer; a hole-transporting layer; and a second electrode, wherein the hole-transporting layer includes a compound represented by General Formula (1) or (1a) below; where M represents an alkali metal; X1 and X2, which may be identical to or different from each other, each represent at least one selected from the group consisting of a carbonyl group, a sulphonyl group, and a sulfinyl group; and X3 represents at least one selected from the group consisting of a bivalent alkyl group, an alkenyl group, and an aryl group, and a hydrogen atom of the bivalent alkyl group, the alkenyl group, and the aryl group may be substituted with a halogen atom; where M+ represents an organic cation; and X1, X2, and X3 have the same meanings as X1, X2, and X3 in the General Formula (1).
    Type: Application
    Filed: November 25, 2020
    Publication date: June 3, 2021
    Inventors: Tamotsu HORIUCHI, Takahiro IDE, Yuuji TANAKA, Nozomu TAMOTO, Naomichi KANEI, Masana SHIBA
  • Publication number: 20190305168
    Abstract: Provided is a photoelectric conversion element including a first electrode, an electron-transporting layer, a hole-transporting layer, and a second electrode, wherein the hole-transporting layer and the second electrode are in contact with each other, and the hole-transporting layer satisfies the following formula: 0%<Rc(50)?0.75% where an average thickness of the hole-transporting layer is determined as X (nm), and Rc(50) is a ratio of an area of projected parts that are projected from a standard line towards the second electrode, where the standard line is present at a position that is away, by X+50 (nm), from an opposite surface of the hole-transporting layer to a surface of the hole-transporting layer in contact with the second electrode.
    Type: Application
    Filed: March 13, 2019
    Publication date: October 3, 2019
    Inventors: Tetsuya Honda, Masana Shiba, Yuuji Tanaka, Nozomu Tamoto, Tamotsu Horiuchi
  • Patent number: 10054864
    Abstract: A toner including a binder resin, wherein a toner extract obtained by drying an extraction liquid obtained through Soxhlet extraction of the toner with tetrahydrofuran (THF) has glass transition temperature Tg in a range of from 35° C. through 55° C., and a moisture-content change rate of the toner extract before and after leaving the toner extract to stand for 3 days in an environment of 40° C. and 70% RH is 0.5% or less, and wherein a specific-surface-area change rate of the toner before and after leaving the toner to stand for 3 days in an environment of 40° C. and 70% RH is in a range of from 15% through 50%.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: August 21, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoki Murayama, Ryota Inoue, Masana Shiba, Daisuke Inoue, Junichi Awamura, Yoshitsugu Kimura, Rintaro Takahashi
  • Patent number: 9989869
    Abstract: A toner comprising a binder resin and a release agent, wherein the toner has a difference of 30 or less between a maximum value and a minimum value among peak intensities in a range of Molecular weight M±300 where Molecular weight M is a molecular weight selected from a range of from 300 through 5,000 in a molecular weight distribution of tetrahydrofuran (THF)-soluble components in the toner as measured by gel permeation chromatography (GPC), and wherein the peak intensities are defined as relative values assuming a maximum peak value in molecular weights of 20,000 or less is 100, in a molecular weight distribution curve taking an intensity as a vertical axis and a molecular weight as a horizontal axis as measured by GPC.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: June 5, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Daisuke Inoue, Naohiro Watanabe, Ryota Inoue, Masana Shiba, Junichi Awamura, Shingo Sakashita, Tomoki Murayama, Yoshitsugu Kimura, Rintaro Takahashi, Akio Takei
  • Publication number: 20180052403
    Abstract: A toner comprising a binder resin and a release agent, wherein the toner has a difference of 30 or less between a maximum value and a minimum value among peak intensities in a range of Molecular weight M±300 where Molecular weight M is a molecular weight selected from a range of from 300 through 5,000 in a molecular weight distribution of tetrahydrofuran (THF)-soluble components in the toner as measured by gel permeation chromatography (GPC), and wherein the peak intensities are defined as relative values assuming a maximum peak value in molecular weights of 20,000 or less is 100, in a molecular weight distribution curve taking an intensity as a vertical axis and a molecular weight as a horizontal axis as measured by GPC.
    Type: Application
    Filed: January 5, 2016
    Publication date: February 22, 2018
    Inventors: Daisuke INOUE, Naohiro WATANABE, Ryota INOUE, Masana SHIBA, Junichi AWAMURA, Shingo SAKASHITA, Tomoki MURAYAMA, Yoshitsugu KIMURA, Rintaro TAKAHASHI, Akio TAKEI
  • Patent number: 9709911
    Abstract: A toner including a binder resin and a release agent, wherein the toner has a component soluble in a 50% by mass aqueous methanol solution in an amount of 0.10% by mass to 0.60% by mass, and wherein the toner has a flowing-out beginning temperature (Tfb) of 55.0° C. to 100.0° C. as determined by a flowtester method.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 18, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshitsugu Kimura, Ryota Inoue, Masana Shiba, Daisuke Inoue, Tomoki Murayama, Rintaro Takahashi
  • Patent number: 9557670
    Abstract: A toner, including: a binder resin; and a colorant, wherein the toner has a storage modulus of 1.0×107 Pa or more at 50° C., a loss modulus of 8.0×104 Pa to 2.0×105 Pa at 80° C., and a loss modulus of 2.0×102 Pa to 1.0×103 Pa at 160° C.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: January 31, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masana Shiba, Hiroshi Yamashita, Tsuyoshi Sugimoto, Daisuke Asahina, Yukari Fukuda, Rintaro Takahashi, Satoyuki Sekiguchi
  • Patent number: 9488925
    Abstract: A magenta toner for electrophotography, including: a polyester resin; and a colorant containing a naphthol-based pigment, wherein the magenta toner for electrophotography satisfies requirements <1> and <2> below: <1> [G?(100)(THF insoluble matter)] is 1.0×105 Pa to 1.0×107 Pa, and a ratio of [G?(40)(THF insoluble matter)] to the [G?(100)(THF insoluble matter)] is 3.5×10 or less, where the [G?(100)(THF insoluble matter)] is a storage modulus at 100° C. of THF insoluble matter of the toner and the [G?(40)(THF insoluble matter)] is a storage modulus at 40° C. of the THF insoluble matter of the toner; and <2> an X-ray diffraction pattern of the naphthol-based pigment in a crystalline state has a plurality of peaks in a range of 0°?2??35°, and a sum of half value widths of the peaks is 5° to 10°.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: November 8, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryuta Chiba, Shinya Nakayama, Tsuyoshi Sugimoto, Hiroshi Yamada, Susumu Chiba, Shinsuke Nagai, Hiroshi Yamashita, Masana Shiba
  • Patent number: 9442403
    Abstract: Provided is a toner, including: a crystalline resin; and a colorant, wherein the toner has a sea island structure in which a crystal region containing the crystalline resin is formed as a sea, and a non-crystalline region containing the colorant is formed as an island.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: September 13, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Azumi Miyaake, Kazumi Suzuki, Masana Shiba, Tatsuya Morita, Yoshitaka Yamauchi
  • Publication number: 20160195826
    Abstract: A toner including a binder resin and a release agent, wherein the toner has a component soluble in a 50% by mass aqueous methanol solution in an amount of 0.10% by mass to 0.60% by mass, and wherein the toner has a flowing-out beginning temperature (Tfb) of 55.0° C. to 100.0° C. as determined by a flowtester method.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 7, 2016
    Inventors: Yoshitsugu KIMURA, Ryota INOUE, Masana SHIBA, Daisuke INOUE, Tomoki MURAYAMA, Rintaro TAKAHASHI
  • Publication number: 20160195828
    Abstract: Toner including binder resin; wherein the toner, as measured by differential scanning calorimetry (DSC), has glass transition temperature in range of 40° C. through 70° C. at first temperature rising and has no glass transition temperature in range of X° C. through X?20° C. at second temperature rising where X° C. denotes the glass transition temperature at the first temperature rising, the toner has difference of 30 or less between maximum value and minimum value among peak intensities in range of Molecular weight M±300 where Molecular weight M is molecular weight selected from range of 300 through 5,000 in molecular weight distribution of THF-soluble components in the toner as measured by GPC, and the peak intensities are defined as relative values assuming the maximum peak value in molecular weights of 20,000 or less is 100, in molecular weight distribution curve taking intensity as vertical axis and molecular weight as horizontal axis as measured by GPC.
    Type: Application
    Filed: January 4, 2016
    Publication date: July 7, 2016
    Inventors: Ayumi SATOH, Naohiro WATANABE, Masana SHIBA, Takahiro HONDA, Ryota INOUE, Daisuke INOUE, Shingo SAKASHITA, Rintaro TAKAHASHI
  • Publication number: 20160195827
    Abstract: A toner including a binder resin, wherein a toner extract obtained by drying an extraction liquid obtained through Soxhlet extraction of the toner with tetrahydrofuran (THF) has glass transition temperature Tg in a range of from 35° C. through 55° C., and a moisture-content change rate of the toner extract before and after leaving the toner extract to stand for 3 days in an environment of 40° C. and 70% RH is 0.5% or less, and wherein a specific-surface-area change rate of the toner before and after leaving the toner to stand for 3 days in an environment of 40° C. and 70% RH is in a range of from 15% through 50%.
    Type: Application
    Filed: January 4, 2016
    Publication date: July 7, 2016
    Inventors: Tomoki Murayama, Ryota Inoue, Masana Shiba, Daisuke Inoue, Junichi Awamura, Yoshitsugu Kimura, Rintaro Takahashi
  • Patent number: 9354533
    Abstract: To provide an electrophotographic toner, which contains a crystalline resin, a non-crystalline resin, a colorant, and a releasing agent, wherein the toner has a storage elastic modulus of 5.0×104 Pa to 5.0×106 Pa at 80° C., and a storage elastic modulus of 2.0×102 Pa to 2.0×103 Pa at 140° C., and wherein the toner has a ratio (C)/((C)+(A)) of 0.10 or greater, where (C) is an integrated intensity of a diffraction spectrum derived from a crystalline structure, (A) is an integrated intensity of a diffraction spectrum derived from a non-crystalline structure, and the diffraction spectrum is a diffraction spectrum of the toner as measured by an X-ray diffraction spectrometer.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: May 31, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Rintaro Takahashi, Kazumi Suzuki, Masana Shiba, Tatsuya Morita, Yoshitaka Yamauchi, Azumi Miyaake
  • Patent number: 9348245
    Abstract: A toner, including: a crystalline resin; a non-crystalline resin; and a colorant, wherein the toner has a sea-island structure which includes a sea containing the crystalline resin and an island containing the non-crystalline resin and the colorant, wherein the island is 1.0 ?m or less in domain diameter, and wherein the toner is 1.7×104 Pa or less in storage elastic modulus at 160° C.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 24, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuya Morita, Kazumi Suzuki, Shingo Sakashita, Masana Shiba, Taichi Nemoto, Yoshitaka Yamauchi, Azumi Miyaake, Rintaro Takahashi
  • Patent number: 9239530
    Abstract: To provide a toner, which contains a colorant, a binder resin, and a releasing agent, wherein the toner satisfies the following (a) to (c): (a) the toner contains at least a polyester resin as the binder resin; (b) the toner has Tg1st of 25° C. to 50° C.; and (c) the toner has a TMA compressive deformation rate (TMA %) of 10% or lower at 50° C. under a condition having relative humidity of 70%, wherein the Tg1st is glass transition temperature of the toner for first heating, as the toner is measured by a DSC system (a differential scanning calorimeter).
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: January 19, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Daisuke Asahina, Hiroshi Yamashita, Masana Shiba, Tsuyoshi Sugimoto, Yukari Fukuda, Rintaro Takahashi
  • Patent number: 9152084
    Abstract: A toner housing container includes: a container body housing a toner; a conveying portion; a pipe receiving port; and an uplifting portion. Flow rate index of the toner measured by powder rheometer and represented by “flow rate index=(total energy at a rotation speed of 10 mm/s)/(total energy at a rotation speed of 100 mm/s)” is in a range of “1.8?flow rate index?6.5”. Container body includes protruding portion protruding from container body interior side of container opening portion toward one end of container body. Uplifting portion includes: uplifting wall surface extending from container body internal wall surface toward protruding portion; and curving portion curving to conform to protruding portion. When the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portion and the toner receiving port of the conveying pipe being inserted.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: October 6, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masana Shiba, Shingo Sakashita, Junichi Awamura, Tomoki Murayama, Chihiro Kikuchi, Masaya Fukuda, Hiroshi Hosokawa, Shunji Katoh, Shinji Tamaki, Hiroshi Ikeguchi, Kenji Kikuchi, Michiharu Suzuki
  • Publication number: 20150253687
    Abstract: A magenta toner for electrophotography, including: a polyester resin; and a colorant containing a naphthol-based pigment, wherein the magenta toner for electrophotography satisfies requirements <1> and <2> below: <1> [G?(100)(THF insoluble matter)] is 1.0×105 Pa to 1.0×107 Pa, and a ratio of [G?(40)(THF insoluble matter)] to the [G?(100)(THF insoluble matter)] is 3.5×10 or less, where the [G?(100)(THF insoluble matter)] is a storage modulus at 100° C. of THF insoluble matter of the toner and the [G?(40)(THF insoluble matter)] is a storage modulus at 40° C. of the THF insoluble matter of the toner; and <2> an X-ray diffraction pattern of the naphthol-based pigment in a crystalline state has a plurality of peaks in a range of 0°?2??35°, and a sum of half value widths of the peaks is 5° to 10°.
    Type: Application
    Filed: February 25, 2015
    Publication date: September 10, 2015
    Inventors: Ryuta Chiba, Shinya Nakayama, Tsuyoshi Sugimoto, Hiroshi Yamada, Susumu Chiba, Shinsuke Nagai, Hiroshi Yamashita, Masana Shiba