Patents by Inventor Kengo Sakai
Kengo Sakai 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: 11943213Abstract: Facilitate configuration of authentication information for a service provided over IP network when there is no shared authentication information between IoT device and service provider device for a service used by IoT device, an intermediary device capable of authenticating legitimate access mediates between devices. An example: a cipher key CK stored in intermediary device and IoT device, as a result of SIM authentication of the SIM of the IoT device, is used as master key for services used by IoT device. By generating unique application key for a service used by IoT device on the intermediary device and IoT device on the basis of master key, and sending it to service provider apparatus from intermediary device by secure connection, common keys are set as authentication information to IoT device and service provider apparatus. A SIM authentication process for generating cipher key can suppress SQN attack based on a bad request.Type: GrantFiled: December 8, 2022Date of Patent: March 26, 2024Assignee: SORACOM, INC.Inventors: Akio Katayama, Kengo Sakai, Georges Olivier Comarmond
-
Publication number: 20240085822Abstract: An image forming apparatus includes an apparatus body, an image bearing member, and a process unit attached to the apparatus body, the process unit including a frame including a storage portion configured to store developer, a developer bearing member configured to supply developer to the image bearing member to develop an electrostatic latent image; and a circuit board attached to the frame, wherein the circuit board includes a light emitting portion configured to emit light, and a light receiving portion configured to receive the light emitted from the light emitting portion and having passed through an interior of the storage portion.Type: ApplicationFiled: November 17, 2023Publication date: March 14, 2024Inventors: Tetsushi Uneme, Shinichi Nishida, Tsuyoshi Ogawa, Masahiro Suetsugu, Kengo Sakai
-
Patent number: 11860556Abstract: An image forming apparatus includes an apparatus body, an image bearing member, and a process unit attached to the apparatus body. The process unit includes a frame including a storage portion configured to store developer, a developer bearing member configured to supply developer to the image bearing member to develop an electrostatic latent image. and a circuit board attached to the frame. The circuit board includes a light emitting portion configured to emit light, and a light receiving portion configured to receive the light emitted from the light emitting portion and having passed through an interior of the storage portion.Type: GrantFiled: December 16, 2021Date of Patent: January 2, 2024Assignee: Canon Kabushiki KaishaInventors: Tetsushi Uneme, Shinichi Nishida, Tsuyoshi Ogawa, Masahiro Suetsugu, Kengo Sakai
-
Publication number: 20230418182Abstract: An image forming apparatus includes a main body having a first metal terminal, a plurality of toner cartridges to store toner and including a housing storing the toner, a supporting member provided at one end, and a memory medium including a chip for recording information about the toner cartridge and an electrical contact and being supported by the supporting member, and a tray movable between a housed position and a drawn-out position. The tray includes a frame which can mount the plurality of toner cartridges, a plurality of tray-side electrical contacts provided at the frame and able to contact the electrical contact of the memory medium of the plurality of toner cartridges respectively, and a second metal terminal electrically connected to the plurality of tray-side electrical contacts and able to contact the first metal terminal.Type: ApplicationFiled: September 8, 2023Publication date: December 28, 2023Inventors: Yu Fukasawa, Yukio Kubo, Daisuke Abe, Mitsuhiro Sato, Masahiro Suetsugu, Kengo Sakai
-
Patent number: 11789378Abstract: An image forming apparatus includes: a main body; a developing cartridge having a housing, a memory medium, a memory medium unit, a developer carrier, and a protrusion portion in the longitudinal direction of the developer carrier; and a tray having a frame, an image bearing member, a guide member provided at one end in the longitudinal direction, an electric contact portion with the memory medium, and a memory unit support portion. The guide member includes a portion which functions as a memory unit support portion, and a downstream portion located downstream of the memory unit support portion in the mounting direction of the developing cartridge. The memory unit support portion guides the protrusion portion to the downstream portion when the developing cartridge is mounted on the frame.Type: GrantFiled: November 19, 2021Date of Patent: October 17, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Yu Fukasawa, Yukio Kubo, Daisuke Abe, Mitsuhiro Sato, Masahiro Suetsugu, Kengo Sakai
-
Publication number: 20230264880Abstract: A packing member includes first and second members. The first member includes a first base surface portion intersecting a first direction and first and second side surface portions that are folded to intersect a second direction from both ends of the first base surface portion, the second member includes a second base surface portion, and third and fourth side surface portions that are folded to intersect a third direction from both ends of the second base surface portion. The third and fourth side surface portions are folded on the same side as the first and second side surface portions. The second member is coupled to the first member so that the first base surface portion is positioned between a third folding line and a tip end of the third side surface portion and positioned between a fourth folding line and a tip end of the fourth side surface portion.Type: ApplicationFiled: February 17, 2023Publication date: August 24, 2023Inventors: KENGO SAKAI, KAZUNARI IWAI, TAIJI WATANABE
-
Publication number: 20230094540Abstract: Facilitate configuration of authentication information for a service provided over IP network when there is no shared authentication information between IoT device and service provider device for a service used by IoT device, an intermediary device capable of authenticating legitimate access mediates between devices. An example: a cipher key CK stored in intermediary device and IoT device, as a result of SIM authentication of the SIM of the IoT device, is used as master key for services used by IoT device. By generating unique application key for a service used by IoT device on the intermediary device and IoT device on the basis of master key, and sending it to service provider apparatus from intermediary device by secure connection, common keys are set as authentication information to IoT device and service provider apparatus. A SIM authentication process for generating cipher key can suppress SQN attack based on a bad request.Type: ApplicationFiled: December 8, 2022Publication date: March 30, 2023Inventors: Akio KATAYAMA, Kengo SAKAI, Georges Olivier COMARMOND
-
Patent number: 11552938Abstract: Facilitate configuration of authentication information for a service provided over IP network when there is no shared authentication information between IoT device and service provider device for a service used by IoT device, an intermediary device capable of authenticating legitimate access mediates between devices. An example: a cipher key CK stored in intermediary device and IoT device, as a result of SIM authentication of the SIM of the IoT device, is used as master key for services used by IoT device. By generating unique application key for a service used by IoT device on the intermediary device and IoT device on the basis of master key, and sending it to service provider apparatus from intermediary device by secure connection, common keys are set as authentication information to IoT device and service provider apparatus. A SIM authentication process for generating cipher key can suppress SQN attack based on a bad request.Type: GrantFiled: July 2, 2019Date of Patent: January 10, 2023Assignee: SORACOM, INC.Inventors: Akio Katayama, Kengo Sakai, Georges Olivier Comarmond
-
Patent number: 11493879Abstract: Disclosed is a cartridge detachably attachable to a body of an image forming apparatus, the cartridge including: a memory member; and a support member supporting the memory member, wherein the memory member has a memory-side electric contact electrically connected to a body-side electric contact of the body when the cartridge is installed in the body, a first surface on which the memory-side electric contact is provided, and a second surface on an opposite side to the first surface, the support member has a memory mounting portion on which the memory member is mounted, the memory mounting portion has a first opposing portion that opposes the second surface of the memory member and is provided with a groove portion, and the memory member is mounted on the memory mounting portion, with the second surface being bonded to the first opposing portion by an adhesive.Type: GrantFiled: June 30, 2021Date of Patent: November 8, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Kengo Sakai, Yukio Kubo
-
Publication number: 20220206410Abstract: An image forming apparatus includes an apparatus body, an image bearing member, and a process unit attached to the apparatus body, the process unit including a frame including a storage portion configured to store developer, a developer bearing member configured to supply developer to the image bearing member to develop an electrostatic latent image; and a circuit board attached to the frame, wherein the circuit board includes a light emitting portion configured to emit light, and a light receiving portion configured to receive the light emitted from the light emitting portion and having passed through an interior of the storage portion.Type: ApplicationFiled: December 16, 2021Publication date: June 30, 2022Inventors: Tetsushi Uneme, Shinichi Nishida, Tsuyoshi Ogawa, Masahiro Suetsugu, Kengo Sakai
-
Publication number: 20220075286Abstract: An image forming apparatus includes: a main body; a developing cartridge having a housing, a memory medium, a memory medium unit, a developer carrier, and a protrusion portion in the longitudinal direction of the developer carrier; and a tray having a frame, an image bearing member, a guide member provided at one end in the longitudinal direction, an electric contact portion with the memory medium, and a memory unit support portion. The guide member includes a portion which functions as a memory unit support portion, and a downstream portion located downstream of the memory unit support portion in the mounting direction of the developing cartridge. The memory unit support portion guides the protrusion portion to the downstream portion when the developing cartridge is mounted on the frame.Type: ApplicationFiled: November 19, 2021Publication date: March 10, 2022Inventors: Yu Fukasawa, Yukio Kubo, Daisuke Abe, Mitsuhiro Sato, Masahiro Suetsugu, Kengo Sakai
-
Publication number: 20220004144Abstract: Disclosed is a cartridge detachably attachable to a body of an image forming apparatus, the cartridge including: a memory member; and a support member supporting the memory member, wherein the memory member has a memory-side electric contact electrically connected to a body-side electric contact of the body when the cartridge is installed in the body, a first surface on which the memory-side electric contact is provided, and a second surface on an opposite side to the first surface, the support member has a memory mounting portion on which the memory member is mounted, the memory mounting portion has a first opposing portion that opposes the second surface of the memory member and is provided with a groove portion, and the memory member is mounted on the memory mounting portion, with the second surface being bonded to the first opposing portion by an adhesive.Type: ApplicationFiled: June 30, 2021Publication date: January 6, 2022Inventors: Kengo Sakai, Yukio Kubo
-
Patent number: 11204566Abstract: An image forming apparatus includes a tray movable between a position housed in a main body and a drawn-out position withdrawn from the main body. The tray includes a frame on which a developing cartridge is mountable, an image bearing member that faces a developer carrier when the developing cartridge is mounted on the frame, an electrical contact portion which abuts on and is electrically connected to a memory medium when the developing cartridge is mounted on the frame, a guide member provided at one end of the developing cartridge when it is mounted on the frame for guiding a protrusion portion and the memory medium unit, the guide member including a portion which abuts on the protrusion portion so that the protrusion portion is positioned, and a memory unit support portion which supports the memory medium unit when the developing cartridge is mounted on the frame.Type: GrantFiled: July 14, 2020Date of Patent: December 21, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Yu Fukasawa, Yukio Kubo, Daisuke Abe, Mitsuhiro Sato, Masahiro Suetsugu, Kengo Sakai
-
Publication number: 20210258295Abstract: Facilitate configuration of authentication information for a service provided over IP network when there is no shared authentication information between IoT device and service provider device for a service used by IoT device, an intermediary device capable of authenticating legitimate access mediates between devices. An example: a cipher key CK stored in intermediary device and IoT device, as a result of SIM authentication of the SIM of the IoT device, is used as master key for services used by IoT device. By generating unique application key for a service used by IoT device on the intermediary device and IoT device on the basis of master key, and sending it to service provider apparatus from intermediary device by secure connection, common keys are set as authentication information to IoT device and service provider apparatus. A SIM authentication process for generating cipher key can suppress SQN attack based on a bad request.Type: ApplicationFiled: July 2, 2019Publication date: August 19, 2021Inventors: Akio KATAYAMA, Kengo SAKAI, Georges Olivier COMARMOND
-
Publication number: 20210018859Abstract: An image forming apparatus includes: a main body; a developing cartridge having a housing, a memory medium, a memory medium unit, a developer carrier, and a protrusion portion in the longitudinal direction of the developer carrier; and a tray having a frame, an image bearing member, a guide member provided at one end in the longitudinal direction, an electric contact portion with the memory medium, and a memory unit support portion. The guide member includes a portion which functions as a memory unit support portion, and a downstream portion located downstream of the memory unit support portion in the mounting direction of the developing cartridge. The memory unit support portion guides the protrusion portion to the downstream portion when the developing cartridge is mounted on the frame.Type: ApplicationFiled: July 14, 2020Publication date: January 21, 2021Inventors: Yu Fukasawa, Yukio Kubo, Daisuke Abe, Mitsuhiro Sato, Masahiro Suetsugu, Kengo Sakai
-
Patent number: 10427867Abstract: A packing member for packing a cartridge that is detachably mountable to an image forming apparatus includes a first portion having an opening as an entrance for the cartridge, a recessed portion for accommodating the cartridge, and first and second limiting portions for limiting positions of the cartridge in directions perpendicular to a longitudinal direction of the cartridge. The packing member also includes a second portion for openably covering the opening. The first and second limiting portions contact portions of the cartridge excluding a region where the electrostatic latent image is to be formed on a photosensitive drum or a developing roller.Type: GrantFiled: June 8, 2017Date of Patent: October 1, 2019Assignee: Canon Kabushiki KaishaInventors: Isao Koishi, Toshiki Fujino, Tsutomu Sakaguchi, Masayuki Takeuchi, Taiji Watanabe, Kengo Sakai
-
Patent number: 10295958Abstract: A packing member includes a first recessed portion, a second recessed portion, a first flange connected to the first recessed portion at a first end, and a second flange connected to the second recessed portion at a first end. The first flange includes at least one first bent portion protruding in a direction intersecting a joined surface at which part of the first flange and part of the second flange are joined. When at least one of a second end of the first flange and a second end of the second flange is in contact with a surface other than the packing member, the second end of the first flange and the second end of the second flange can be moved along the surface.Type: GrantFiled: September 16, 2015Date of Patent: May 21, 2019Assignee: Canon Kabushiki KaishaInventors: Kengo Sakai, Yoshimasa Komaki
-
Publication number: 20170267445Abstract: A packing member for packing a cartridge detachably mountable to an image forming apparatus is molded with a thin resin material plate and includes: (i) a frame portion including an opening as an entrance for the cartridge, a first recessed portion for accommodating the cartridge, and a first limiting portion for limiting a position of the cartridge with respect to a direction perpendicular to a longitudinal direction of the cartridge; and (ii) a cap portion for openably covering the opening. The cap portion includes a second limiting portion for limiting movement of the cartridge, positionally-limited by the first limiting portion, in a direction in which the cartridge is spaced from the first limiting portion.Type: ApplicationFiled: June 8, 2017Publication date: September 21, 2017Inventors: Isao Koishi, Toshiki Fujino, Tsutomu Sakaguchi, Masayuki Takeuchi, Taiji Watanabe, Kengo Sakai
-
Publication number: 20170242392Abstract: A packing member includes a first recessed portion, a second recessed portion, a first flange connected to the first recessed portion at a first end, and a second flange connected to the second recessed portion at a first end. The first flange includes at least one first bent portion protruding in a direction intersecting a joined surface at which part of the first flange and part of the second flange are joined. When at least one of a second end of the first flange and a second end of the second flange is in contact with a surface other than the packing member, the second end of the first flange and the second end of the second flange can be moved along the surface.Type: ApplicationFiled: September 16, 2015Publication date: August 24, 2017Inventors: Kengo Sakai, Yoshimasa Komaki
-
Patent number: D862397Type: GrantFiled: January 12, 2018Date of Patent: October 8, 2019Assignee: PACIFIC ENGINEERING CORP.Inventors: Kengo Sakai, Hironori Shimizu