Patents by Inventor Masaki Nonaka

Masaki Nonaka 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: 20190369511
    Abstract: An electrophotographic photosensitive member includes a support and a surface layer, in which the surface layer contains a copolymer of a composition which contains at least a compound represented by the following general formula (1) and a compound represented by the following general formula (2), a content of the compound represented by the general formula (1) in the composition is 25 mass % or more and 70 mass % or less with respect to a total content of the compound represented by the general formula (1) and the compound represented by the general formula (2), and the total content of the compound represented by the general formula (1) and the compound represented by the general formula (2) is 55 mass % or more with respect to a total mass of the composition.
    Type: Application
    Filed: May 28, 2019
    Publication date: December 5, 2019
    Inventors: Yuka Ishiduka, Tsutomu Nishida, Atsushi Okuda, Hiroyuki Watanabe, Hideharu Shimozawa, Nobuhiro Nakamura, Kenichi Kaku, Daisuke Miura, Koichi Nakata, Masaki Nonaka, Koji Takahashi, Haruki Mori
  • Publication number: 20190361365
    Abstract: Provided is an electrophotographic photosensitive member that suppresses image smearing at the time of its repeated use, and expresses satisfactory wear resistance and electric characteristics. The electrophotographic photosensitive member includes a support and a photosensitive layer in the stated order, wherein a surface layer of the electrophotographic photosensitive member contains a copolymer of a hole-transportable compound having a chain-polymerizable functional group and a specific compound having maleimide groups.
    Type: Application
    Filed: May 20, 2019
    Publication date: November 28, 2019
    Inventors: Haruki Mori, Koichi Nakata, Masaki Nonaka, Shinji Takagi
  • Patent number: 10488769
    Abstract: Provided is an electrophotographic photosensitive member, wherein a surface layer of the electrophotographic photosensitive member contains a copolymer of a hole-transportable compound having a polymerizable functional group and a compound represented by the following general formula (1).
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: November 26, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichi Nakata, Shinji Takagi, Haruki Mori, Masaki Nonaka, Shubun Kujirai
  • Patent number: 10488771
    Abstract: A surface layer of an electrophotographic photosensitive member contains a cured product of a composition containing a hole transport compound having an acryloyloxy group or a methacryloyloxy group, and a compound having a specific structure.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: November 26, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Haruki Mori, Masaki Nonaka, Koichi Nakata, Shinji Takagi
  • Publication number: 20190329687
    Abstract: Provided is a simple and compact headrest support device. The headrest support device (20) comprises a support member (22) coupled to a frame (2) of a seatback (1), and a headrest pillar structure including a pillar base portion (25) extending laterally and supported by the support member so as to be rotatable around an axial line of the pillar base portion, and a pair of pillar main body portions (26) extending substantially vertically from the pillar base portion substantially in parallel to each other in a laterally spaced apart relationship and connected to a headrest (24), wherein the support member is coupled to the frame at at least one coupling portion (34) disposed between the two pillar main body portions in front view in a headrest upright condition where the headrest is positioned above the seatback.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 31, 2019
    Inventors: Takuya Okubo, Takayuki Inose, Masaki Nonaka
  • Patent number: 10451984
    Abstract: A coating film of a coating liquid for a surface layer, the coating liquid containing a hole transporting compound having a chain-polymerizable functional group and a compound having a specified structure, is cured to thereby form a surface layer of an electrophotographic photosensitive member.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: October 22, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Haruki Mori, Masaki Nonaka, Shinji Takagi, Koichi Nakata
  • Patent number: 10391907
    Abstract: Provided is a simple and compact headrest support device. The headrest support device (20) comprises a support member (22) coupled to a frame (2) of a seatback (1), and a headrest pillar structure including a pillar base portion (25) extending laterally and supported by the support member so as to be rotatable around an axial line of the pillar base portion, and a pair of pillar main body portions (26) extending substantially vertically from the pillar base portion substantially in parallel to each other in a laterally spaced apart relationship and connected to a headrest (24), wherein the support member is coupled to the frame at at least one coupling portion (34) disposed between the two pillar main body portions in front view in a headrest upright condition where the headrest is positioned above the seatback.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: August 27, 2019
    Assignee: TS TECH CO., LTD.
    Inventors: Takuya Okubo, Takayuki Inose, Masaki Nonaka
  • Patent number: 10365569
    Abstract: The present invention provides: an electrophotographic photosensitive member which can achieve both of abrasion resistance and electrical characteristics; a production method of the electrophotographic photosensitive member; and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member. A surface layer of the electrophotographic photosensitive member includes a cured product and a specific amount of an alcohol or carboxylic acid having a specific structure, wherein the cured product is a polymerized product of a hole transporting compound having an acryloyloxy group or a methacryloyloxy group.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: July 30, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryoichi Tokimitsu, Masaki Nonaka, Haruki Mori, Takahiro Mitsui
  • Publication number: 20190183041
    Abstract: A transmission (10) for a lawn mower, for transmitting an output of a drive source (8) to a driving wheel (4), the transmission including a speed-change transmission device (11) and a power transmission device (12) movably coupled to the speed-change transmission device (11), wherein the power transmission device (12) includes a first power transmission device (13) coupled to the speed-change transmission device (11), and a second power transmission device (14) to which the driving wheel (4) is coupled, and the first power transmission device (13) and the second power transmission device (14) are movably coupled to each other.
    Type: Application
    Filed: August 8, 2017
    Publication date: June 20, 2019
    Inventors: Masaki Nonaka, Koichi Ogawa, Takanori Ishii
  • Patent number: 10310395
    Abstract: Provided are an electrophotographic photosensitive member capable of satisfying abrasion resistance and electrical properties and suppressing image deletion, and an electrophotographic apparatus and a process cartridge having the electrophotographic photosensitive member. A surface layer of the electrophotographic photosensitive member contains a polymer of a hole transport material having a polymerizable functional group, wherein the hole transport material has a specific structure.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: June 4, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichi Nakata, Haruki Mori, Shinji Takagi, Masaki Nonaka, Ryoichi Tokimitsu
  • Publication number: 20190094726
    Abstract: A surface layer of an electrophotographic photosensitive member contains a cured product of a composition containing a hole transport compound having an acryloyloxy group or a methacryloyloxy group, and a compound having a specific structure.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 28, 2019
    Inventors: Haruki Mori, Masaki Nonaka, Koichi Nakata, Shinji Takagi
  • Publication number: 20190056676
    Abstract: Provided is an electrophotographic photosensitive member, wherein a surface layer of the electrophotographic photosensitive member contains a copolymer of a hole-transportable compound having a polymerizable functional group and a compound represented by the following general formula (1).
    Type: Application
    Filed: August 13, 2018
    Publication date: February 21, 2019
    Inventors: Koichi Nakata, Shinji Takagi, Haruki Mori, Masaki Nonaka, Shubun Kujirai
  • Publication number: 20190049867
    Abstract: The present invention provides: an electrophotographic photosensitive member which can achieve both of abrasion resistance and electrical characteristics; a production method of the electrophotographic photosensitive member; and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member. A surface layer of the electrophotographic photosensitive member includes a cured product and a specific amount of an alcohol or carboxylic acid having a specific structure, wherein the cured product is a polymerized product of a hole transporting compound having an acryloyloxy group or a methacryloyloxy group.
    Type: Application
    Filed: August 3, 2018
    Publication date: February 14, 2019
    Inventors: RYOICHI TOKIMITSU, Masaki Nonaka, Haruki Mori, Takahiro Mitsui
  • Publication number: 20180335708
    Abstract: The present invention relates to an electrophotographic photosensitive member in which a surface layer contains a polymer of a hole transport material having a polymerizable functional group, and the hole transport material has a specific fluorene structure.
    Type: Application
    Filed: May 16, 2018
    Publication date: November 22, 2018
    Inventors: Koichi Nakata, Haruki Mori, Shinji Takagi, Koichi Suzuki, Ryuji Higashi, Isao Kawata, Hajime Muta, Yuto Ito, Masaki Nonaka
  • Publication number: 20180329317
    Abstract: A coating film of a coating liquid for a surface layer, the coating liquid containing a hole transporting compound having a chain-polymerizable functional group and a compound having a specified structure, is cured to thereby form a surface layer of an electrophotographic photosensitive member.
    Type: Application
    Filed: May 3, 2018
    Publication date: November 15, 2018
    Inventors: Haruki Mori, Masaki Nonaka, Shinji Takagi, Koichi Nakata
  • Patent number: 10120331
    Abstract: The present invention provides a satisfactory electrophotographic photosensitive member which satisfies wear resistance and electrical properties and further, with which image defects do not occur, a process for producing an electrophotographic photosensitive member, and an electrophotographic apparatus and a process cartridge each including the electrophotographic photosensitive member. The electrophotographic photosensitive member the surface layer of which contains a copolymer of a polymerizable functional group-containing charge transporting substance and a particular polymerizable compound.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: November 6, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichi Nakata, Shinji Takagi, Masaki Nonaka, Haruki Mori
  • Publication number: 20180284629
    Abstract: Provided are an electrophotographic photosensitive member capable of satisfying abrasion resistance and electrical properties and suppressing image deletion, and an electrophotographic apparatus and a process cartridge having the electrophotographic photosensitive member. A surface layer of the electrophotographic photosensitive member contains a polymer of a hole transport material having a polymerizable functional group, wherein the hole transport material has a specific structure.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 4, 2018
    Inventors: Koichi Nakata, Haruki Mori, Shinji Takagi, Masaki Nonaka, Ryoichi Tokimitsu
  • Patent number: 10067431
    Abstract: An electrophotographic photosensitive member, in which occurrences of image defects are suppressed, and a method for manufacturing the electrophotographic photosensitive member are provided. In addition, a process cartridge and an electrophotographic apparatus, which include the electrophotographic photosensitive member, are provided. The surface layer of the electrophotographic photosensitive member contains a cured material, and the cured material is a copolymer of a hole transport compound having a chain-polymerizable functional group and a vinyl ester compound containing a long-chain alkyl group.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: September 4, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinji Takagi, Masaki Nonaka, Haruki Mori, Ryoichi Tokimitsu, Koichi Nakata
  • Patent number: 10060166
    Abstract: A latch device for a vehicle which locks or unlocks by engaging with or disengaging from a rod-shaped portion includes a housing and a latch 30 rotatably supported by the housing, the latch including a hook-shaped portion 33 engageable with the rod-shaped portion to form a locked state. The hook-shaped portion 33 includes a first support surface 38A opposed to the rod-shaped portion in the locked state, a protruding portion 37 located in a position closer to a distal end of the hook-shaped portion than the first support surface 38A and configured to protrude relative to the first support surface 38A, and a second support surface 38B provided on the protruding portion 37 and configured to be opposed to the rod-shaped portion. The first support surface 38A and the second support surface 38B are configured to face in different directions, and to thereby be concurrently contactable with the rod-shaped portion.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: August 28, 2018
    Assignee: TS TECH CO., LTD.
    Inventors: Tatsuo Sayama, Masaki Nonaka
  • Publication number: 20180222366
    Abstract: Provided is a simple and compact headrest support device. The headrest support device (20) comprises a support member (22) coupled to a frame (2) of a seatback (1), and a headrest pillar structure including a pillar base portion (25) extending laterally and supported by the support member so as to be rotatable around an axial line of the pillar base portion, and a pair of pillar main body portions (26) extending substantially vertically from the pillar base portion substantially in parallel to each other in a laterally spaced apart relationship and connected to a headrest (24), wherein the support member is coupled to the frame at at least one coupling portion (34) disposed between the two pillar main body portions in front view in a headrest upright condition where the headrest is positioned above the seatback.
    Type: Application
    Filed: August 4, 2016
    Publication date: August 9, 2018
    Inventors: Takuya Okubo, Takayuki Inose, Masaki Nonaka