Patents by Inventor Masahiro Kuwata
Masahiro Kuwata 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).
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Publication number: 20130070026Abstract: A liquid ejection head including a nozzle plate having a nozzle array constructed of multiple nozzles, a channel member that forms multiple individual channels communicating with the multiple nozzles, a pressure generator to pressurize liquid within the multiple individual channels, and a common channel member that forms a common channel from which the liquid is supplied to the multiple individual channels. The channel member includes a first surface facing the common channel, a second surface provided at both ends of the channel member and protruding beyond the first surface toward a direction opposite a direction of flow of the liquid, and a third surface that connects the first and second surfaces. At least a gap between the common channel member and a part of the second surface is sealed by a seal member that forms a wall of the common channel between the channel member and the common channel member.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Applicant: RICOH COMPANY, LTD.Inventor: Masahiro KUWATA
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Patent number: 8393721Abstract: An imaging-material container that stores imaging material to be supplied to an image forming device includes a flexible storage member, a pressure unit, a regulation member, and a pushing unit. The flexible storage member stores imaging material. The pressure unit applies pressure on the flexible storage member. The regulation member contacts the flexible storage member to deform the flexible storage member. The pushing unit moves the regulation member as the imaging material is consumed.Type: GrantFiled: May 17, 2010Date of Patent: March 12, 2013Assignee: Ricoh Company, Ltd.Inventors: Tomomi Katoh, Tadashi Hayakawa, Ikoh Soh, Akiko Bannai, Shotaro Takeuchi, Masahiro Kuwata, Toshiroh Tokuno, Masanori Kusunoki
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Publication number: 20130010038Abstract: An ink cartridge attachable to and detachable from an imaging apparatus, and including an ink accommodating unit; and a cartridge casing having an opening, whereby the ink accommodating unit includes: an ink accommodating body; and an ink supplying portion including a nozzle insertion path and connected to the ink accommodating body, whereby the ink supplying portion is held by the cartridge casing so that the ink supplying portion is rotatable between a position where the nozzle insertion path faces the opening and a position where the nozzle insertion path faces an inner wall surface of the cartridge casing, and when the ink cartridge is attached to the imaging apparatus the ink supplying portion is rotated to direct the nozzle insertion path toward the opening, and when the ink cartridge is detached the ink supplying portion is rotated to direct the nozzle insertion path toward the inner wall surface.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Tadashi HAYAKAWA, Shotaro Takeuchi, Toshiroh Tokuno, Tomomi Katoh, Masanori Kusunoki, Akiko Bannai, Masahiro Kuwata, Ikoh Soh
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Patent number: 8336998Abstract: A liquid discharging-type image forming apparatus capable of securely eliminating mixed air bubbles from the ink liquid and forming a stable image. The apparatus includes: a sub tank 35 of which negative pressure amount is detected; a pump 115 sucking ink when the detected amount of the sub tank 35 is lower than a predetermined amount so that the sub tank 35 and recording heads 34 have negative pressure; a second backflow prevention unit 203 to stop the sent ink to be reserved in a second liquid container 201, which is pressurized as ink increases. When the ink is again filled in the sub tank 35, the ink is sent from the second liquid container 201 before being sent from the first liquid container. Accordingly, ink is not accumulated in the second liquid container 201, allowing the second liquid container 201 to be smaller and the image forming apparatus as a whole to be more compact.Type: GrantFiled: July 20, 2010Date of Patent: December 25, 2012Assignee: Ricoh Company, Ltd.Inventors: Masahiro Kuwata, Tadashi Hayakawa, Ikoh Soh, Toshiroh Tokuno, Tomomi Katoh, Akiko Bannai, Shotaro Takeuchi, Masanori Kusunoki
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Patent number: 8292414Abstract: An ink cartridge attachable to and detachable from an imaging apparatus, and including an ink accommodating unit; and a cartridge casing having an opening, whereby the ink accommodating unit includes: an ink accommodating body; and an ink supplying portion including a nozzle insertion path and connected to the ink accommodating body, whereby the ink supplying portion is held by the cartridge casing so that the ink supplying portion is rotatable between a position where the nozzle insertion path faces the opening and a position where the nozzle insertion path faces an inner wall surface of the cartridge casing, and when the ink cartridge is attached to the imaging apparatus the ink supplying portion is rotated to direct the nozzle insertion path toward the opening, and when the ink cartridge is detached the ink supplying portion is rotated to direct the nozzle insertion path toward the inner wall surface.Type: GrantFiled: September 25, 2009Date of Patent: October 23, 2012Assignee: Ricoh Company, Ltd.Inventors: Tadashi Hayakawa, Shotaro Takeuchi, Toshiroh Tokuno, Tomomi Katoh, Masanori Kusunoki, Akiko Bannai, Masahiro Kuwata, Ikoh Soh
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Publication number: 20120069093Abstract: A liquid ejection head includes a common-chamber formation member including a common chamber to supply liquid to pressure chambers communicating nozzles for ejecting liquid droplets, a flexible thin-film member to form part of a wall face of the common chamber, and a thin-film support member bonded to the thin-film member with glue. The support member has an opening or a recessed portion at least partially having a shape that is broad in an area proximal to a first surface of the support member bonded to the thin-film member and becomes narrower as an area of the opening or the recessed portion is more distant from the first surface. The opening or the recessed portion is sealed with the thin-film member. A portion of the thin-film member corresponding to the opening or the recessed portion has the glue on only a periphery area of the portion that contacts the support member.Type: ApplicationFiled: September 13, 2011Publication date: March 22, 2012Applicant: RICOH COMPANY, LTD.Inventors: Masahiro KUWATA, Daisuke Takagi, Kazuo Haida
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Patent number: 8052262Abstract: A liquid container is detachably mountable in an image forming apparatus having a liquid introducing member. The liquid container includes a storage unit, a supply port assembly, and an elastic seal member. The storage unit is disposed in the liquid container to store a liquid usable for image formation. The supply port assembly is mounted in the storage unit and has a supply channel therein. The liquid introducing member of the image forming apparatus is inserted into the supply port assembly. The elastic seal member is disposed in the supply port assembly. When penetrated by the liquid introducing member, the elastic seal member moves together with the liquid introducing member relative to the supply port assembly to open and close the supply channel.Type: GrantFiled: March 11, 2010Date of Patent: November 8, 2011Assignee: Ricoh Company, Ltd.Inventors: Toshiroh Tokuno, Tomomi Katoh, Shotaro Takeuchi, Akiko Bannai, Masanori Kusunoki, Masahiro Kuwata, Tadashi Hayakawa, Ikoh Soh
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Publication number: 20110063382Abstract: An ink cartridge includes a flexible container containing ink; and a restriction mechanism allowing the flexible container to deform only in the direction to decrease the volume of the flexible container. The ink cartridge is used for an image forming apparatus including an inkjet head for jetting ink from nozzles.Type: ApplicationFiled: September 2, 2010Publication date: March 17, 2011Applicant: RICOH COMPANY, LTD.Inventors: Masahiro KUWATA, Tadashi Hayakawa, Ikoh Soh, Tomomi Katoh, Toshiroh Tokuno, Akiko Bannai, Shotaro Takeuchi, Masanori Kusunoki
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Publication number: 20110050819Abstract: A liquid carrying container which is removably mounted to a body of an image forming device is disclosed. The liquid carrying container includes a liquid containing bag which contains liquid; and a supply port section which has an elastically deformable portion through which a hollow nozzle member is pierced from the side of the image forming device, wherein the supply port section is directly held within a recess section formed on the liquid containing bag, and the hollow nozzle member penetrates through the supply port section and the liquid containing bag to face inside the liquid containing bag.Type: ApplicationFiled: August 27, 2010Publication date: March 3, 2011Applicant: RICOH COMPANY, LTD.Inventors: Akiko BANNAI, Toshiroh Tokuno, Shotaro Takeuchi, Masanori Kusunoki, Tomomi Katoh, Masahiro Kuwata, Tadashi Hayakawa, Ikoh Soh
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Publication number: 20110025789Abstract: A liquid discharging-type image forming apparatus capable of securely eliminating mixed air bubbles from the ink liquid and forming a stable image. The apparatus includes: a sub tank 35 of which negative pressure amount is detected; a pump 115 sucking ink when the detected amount of the sub tank 35 is lower than a predetermined amount so that the sub tank 35 and recording heads 34 have negative pressure; a second backflow prevention unit 203 to stop the sent ink to be reserved in a second liquid container 201, which is pressurized as ink increases. When the ink is again filled in the sub tank 35, the ink is sent from the second liquid container 201 before being sent from the first liquid container. Accordingly, ink is not accumulated in the second liquid container 201, allowing the second liquid container 201 to be smaller and the image forming apparatus as a whole to be more compact.Type: ApplicationFiled: July 20, 2010Publication date: February 3, 2011Applicant: RICOH COMPANY, LTD.Inventors: Masahiro KUWATA, Tadashi Hayakawa, Ikoh Soh, Toshiroh Tokuno, Tomomi Katoh, Akiko Bannai, Shotaro Takeuchi, Masanori Kusunoki
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Patent number: 7855946Abstract: A recording and reproducing apparatus supports a recording medium swingably in at least two axis directions by a support section formed in a shape having elasticity. When an access can be made to a memory, the recording medium is constantly and reciprocatingly moved in a direction along data row. Thus, a positional relationship with a probe head is always grasped. When an access is made, a moving time associated with position identification is reduced, and precise and fast movement is achieved.Type: GrantFiled: March 19, 2008Date of Patent: December 21, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Akihiro Koga, Masahiro Kuwata, Kei Masunishi
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Patent number: 7849874Abstract: A slide valve apparatus includes a first member having a first fluid channel for allowing a fluid to flow therethrough, a second member sliding along the first member and having a second fluid channel formed in a manner to communicate with the first fluid channel, and a first elastic membrane formed in the sliding surface along which the second member and the first member slide relative to each other and having a first communicating hole communicating with the first fluid channel. In manufacturing the slide valve apparatus, a gas is spurted from the open edge of the first fluid channel in at least a stage between the start up of the step of forming the elastic membrane and the end of the step of baking the elastic membrane so as to form in the elastic membrane the communicating hole communicating with the first fluid channel.Type: GrantFiled: September 20, 2005Date of Patent: December 14, 2010Assignees: Kabushiki Kaisha Toshiba, Kanagawa Academy of Science and TechnologyInventors: Masahiro Kuwata, Hajime Sudo, Takehiko Kitamori
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Publication number: 20100295908Abstract: An imaging-material container that stores imaging material to be supplied to an image forming device includes a flexible storage member, a pressure unit, a regulation member, and a pushing unit. The flexible storage member stores imaging material. The pressure unit applies pressure on the flexible storage member. The regulation member contacts the flexible storage member to deform the flexible storage member. The pushing unit moves the regulation member as the imaging material is consumed.Type: ApplicationFiled: May 17, 2010Publication date: November 25, 2010Applicant: RICOH COMPANY, LTD.Inventors: Tomomi Katoh, Tadashi Hayakawa, Ikoh Soh, Akiko Bannai, Shotaro Takeuchi, Masahiro Kuwata, Toshiroh Tokuno, Masanori Kusunoki
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Publication number: 20100277555Abstract: An ink cartridge removably mountable in an image forming apparatus includes a flexible storage member, a pressurization-space formation member, an output port, and an opening-and-closing assembly. The flexible storage member stores ink. The pressurization-space formation member hermetically houses the storage member and forms a pressurization space to which a fluid is supplied between the pressurization-space formation member and the storage member. The output port is connected to the storage member, through which the ink is supplied from the storage member to the image forming apparatus. The opening-and-closing assembly opens and closes between the output port and the storage member by the fluid supplied into the pressurization space.Type: ApplicationFiled: April 28, 2010Publication date: November 4, 2010Applicant: RICOH COMPANY, LTD.Inventors: Tomomi Katoh, Tadashi Hayakawa, Ikoh Soh, Toshiroh Tokuno, Akiko Bannai, Shotaro Takeuchi, Masahiro Kuwata, Masanori Kusunoki
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Publication number: 20100232827Abstract: A liquid container is detachably mountable in an image forming apparatus having a liquid introducing member. The liquid container includes a storage unit, a supply port assembly, and an elastic seal member. The storage unit is disposed in the liquid container to store a liquid usable for image formation. The supply port assembly is mounted in the storage unit and has a supply channel therein. The liquid introducing member of the image forming apparatus is inserted into the supply port assembly. The elastic seal member is disposed in the supply port assembly. When penetrated by the liquid introducing member, the elastic seal member moves together with the liquid introducing member relative to the supply port assembly to open and close the supply channel.Type: ApplicationFiled: March 11, 2010Publication date: September 16, 2010Applicant: RICOH COMPANY, LTD.,Inventors: Toshiroh Tokuno, Tomomi Katoh, Shotaro Takeuchi, Akiko Bannai, Masanori Kusunoki, Masahiro Kuwata, Tadashi Hayakawa, Ikoh Soh
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Publication number: 20100225716Abstract: An ink cartridge attachable to and detachable from an imaging apparatus, and including an ink accommodating unit; and a cartridge casing having an opening, whereby the ink accommodating unit includes: an ink accommodating body; and an ink supplying portion including a nozzle insertion path and connected to the ink accommodating body, whereby the ink supplying portion is held by the cartridge casing so that the ink supplying portion is rotatable between a position where the nozzle insertion path faces the opening and a position where the nozzle insertion path faces an inner wall surface of the cartridge casing, and when the ink cartridge is attached to the imaging apparatus the ink supplying portion is rotated to direct the nozzle insertion path toward the opening, and when the ink cartridge is detached the ink supplying portion is rotated to direct the nozzle insertion path toward the inner wall surface.Type: ApplicationFiled: September 25, 2009Publication date: September 9, 2010Inventors: Tadashi Hayakawa, Shotaro Takeuchi, Toshiroh Tokuno, Tomomi Katoh, Masanori Kusunoki, Akiko Bannai, Masahiro Kuwata, Ikoh Soh
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Publication number: 20090158589Abstract: A slide valve apparatus includes a first member having a first fluid channel for allowing a fluid to flow therethrough, a second member sliding along the first member and having a second fluid channel formed in a manner to communicate with the first fluid channel, and a first elastic membrane formed in the sliding surface along which the second member and the first member slide relative to each other and having a first communicating hole communicating with the first fluid channel. In manufacturing the slide valve apparatus, a gas is spurted from the open edge of the first fluid channel in at least a stage between the start up of the step of forming the elastic membrane and the end of the step of baking the elastic membrane so as to form in the elastic membrane the communicating hole communicating with the first fluid channel.Type: ApplicationFiled: February 20, 2009Publication date: June 25, 2009Inventors: Masahiro KUWATA, Hajime Sudo, Takehiko Kitamori
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Publication number: 20080239931Abstract: A recording and reproducing apparatus supports a recording medium swingably in at least two axis directions by a support section formed in a shape having elasticity. When an access can be made to a memory, the recording medium is constantly and reciprocatingly moved in a direction along data row. Thus, a positional relationship with a probe head is always grasped. When an access is made, a moving time associated with position identification is reduced, and precise and fast movement is achieved.Type: ApplicationFiled: March 19, 2008Publication date: October 2, 2008Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Akihiro Koga, Masahiro Kuwata, Kei Masunishi
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Publication number: 20080081232Abstract: A chemical reacting system includes a high temperature reactor; a low temperature reactor where reaction is conducted at a lower temperature than in the high temperature reactor; and a heat transmission joint with a heat transmission controller to join the high temperature reactor transferably in heat with the low temperature reactor so as to change a transferable heat cross section, thereby controlling a heat quantity to be transferred from the high temperature reactor to the low temperature reactor.Type: ApplicationFiled: April 5, 2007Publication date: April 3, 2008Applicant: Kabushiki Kaisha ToshibaInventors: Masahiro Kuwata, Yoshiyuki Isozaki
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Patent number: 7345278Abstract: An infrared ray detection device has a detection cell which has a thermoelectric converting part and an infrared ray absorption layer formed via a space on a semiconductor substrate, a first wiring part formed on the semiconductor substrate, and a supporting part, the detection cell being formed via the space on the semiconductor substrate and supports the detection cell. The supporting part includes a plurality of supporting legs which have a second wiring part electrically connecting the first wiring part to the detection cell and an insulating part covering a surrounding are of the second wiring part, and at least one connection part made of an insulating material connecting the plurality of supporting legs to each other.Type: GrantFiled: December 27, 2006Date of Patent: March 18, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Hiroto Honda, Ikuo Fujiwara, Masahiro Kuwata, Kei Masunishi