Patents by Inventor Takafumi Nakagawa
Takafumi Nakagawa 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: 11964396Abstract: A device capable of acquiring a deviation of a working position of a tool with respect to a target position of a workpiece with higher accuracy in accordance with actual work. A device for acquiring a deviation amount of a working position of a tool with respect to a target position when a work is performed on a workpiece with respect to the target position by the tool, the tool being moved by a movement machine, the device including: a camera arranged in a predetermined positional relationship with respect to the tool and configured to image the target position at a first time point when the tool performs an operation for the work; and a deviation amount acquisition section configured to acquire a deviation amount between the working position and the target position at the first time point, based on a position of the target position in image data imaged by the camera and information indicating a position of the working position in the image data.Type: GrantFiled: June 19, 2020Date of Patent: April 23, 2024Assignee: Fanuc CorporationInventors: Takafumi Kajiyama, Hiroshi Nakagawa
-
Patent number: 11968033Abstract: Optical transmission system transmits WDM signal from first node to second node via optical fiber. The optical transmission system includes: first OCM that detects optical power of each wavelength channel of the WDM signal in the first node; second OCM that detects optical power of each wavelength channel of the WDM signal in the second node; first processor that calculates linear SNR of each wavelength channel based on the optical power of each wavelength channel detected by the second OCM; second processor that calculates non-linear SNR of each wavelength channel based on the optical power of each wavelength channel detected by the first OCM; third processor that calculates GSNR for each wavelength channel using the linear SNR and the non-linear SNR; and fourth processor that controls transmission power of each wavelength channel of the WDM signal based on the GSNR of each wavelength channel.Type: GrantFiled: July 28, 2022Date of Patent: April 23, 2024Assignee: FUJITSU LIMITEDInventors: Tomohiro Yamauchi, Takafumi Terahara, Goji Nakagawa
-
Publication number: 20240129034Abstract: A forward Raman amplifier includes a plurality of pumping light sources with different wavelengths and the forward Raman amplifier, according to a fiber type or a zero-dispersion wavelength of the fiber, changes the number of pumping light sources to be emitted, changes a power ratio between the plurality of pumping light sources with the different wavelengths or changes wavelength characteristics of a gain, according to a fiber type.Type: ApplicationFiled: July 12, 2023Publication date: April 18, 2024Applicant: Fujitsu LimitedInventors: Hiroshi NAKAMOTO, GOJI NAKAGAWA, Kentaro KAWANISHI, Hiroki OI, Tomohiro YAMAUCHI, Takafumi TERAHARA, Teppei OHATA
-
Patent number: 11917947Abstract: Provided is a threshing cylinder with a threshing processing section provided on the rear side of a raking section. In the threshing processing section, a front support member, an intermediate support member, and a rear support member are supported by a threshing cylinder support shaft. A plurality of front-side divided threshing teeth support members are supported by the front support member and the intermediate support member in a state in which the front-side divided threshing teeth support members are arranged at the same arrangement pitch in the circumferential direction of the threshing processing section. A plurality of rear-side divided threshing teeth support members are supported by the intermediate support member and the rear support member in a state in which the rear-side divided threshing teeth support members are arranged at the same arrangement pitch in the circumferential direction of the threshing processing section.Type: GrantFiled: May 15, 2019Date of Patent: March 5, 2024Assignee: Kubota CorporationInventors: Takafumi Mitsui, Fumisato Nakagawa, Toshinari Nishimura, Tsuyoshi Kumatori
-
Publication number: 20230391567Abstract: A document sheet conveying device includes a sheet feed tray lift mechanism, a top plate portion, a fixed wall portion, and a lifted wall portion. The sheet feed tray lift mechanism lifts up and down a sheet feed tray. The top plate portion is adjacent to the sheet feed tray at a downstream side, in a sheet feed direction, of the sheet feed tray, and is contacted by a lower surface of a document sheet having been fed. The fixed wall portion is provided to extend downward from an upstream end, in the sheet feed direction, of the top plate portion, and the position of the fixed wall portion is fixed. The lifted wall portion extends upward from a downstream end of the sheet feed tray in the sheet feed direction and is lifted up and down along the fixed wall portion together with the sheet feed tray.Type: ApplicationFiled: May 31, 2023Publication date: December 7, 2023Inventors: Takafumi Nakagawa, Yoshitaka Tokoro, Ren Isoda, Hirofumi Hagihara
-
Publication number: 20230382674Abstract: The document sheet conveying device includes a second discharge tray, and a switching portion. The second discharge tray rotates between a use posture which allows loading of a document sheet on the second discharge tray and a storage posture in which the second discharge tray serves as a part of the conveyance housing. The switching portion connects a first conveying path formed from a supply tray to a branch point inside the conveyance housing to one of a second conveying path formed from the branch point to a first discharge tray and a third conveying path formed from the branch point to the second discharge tray. The switching portion connects the first conveying path to the third conveying path when the posture of the second discharge tray has been changed to the use posture in a state where the first conveying path is connected to the second conveying path.Type: ApplicationFiled: May 26, 2023Publication date: November 30, 2023Inventors: Yoshitaka Tokoro, Takafumi Nakagawa, Hirofumi Hagihara, Ren Isoda
-
Publication number: 20230322517Abstract: A document sheet conveying device includes a guide portion, a swinging shaft, a sheet member, and a biasing member. The guide portion guides a document sheet to the discharge tray. The swinging shaft is provided at an upstream end of the guide portion in a conveyance direction of the document sheet and swingably supports the guide portion with a width direction of the document sheet as an axis direction. One end of the sheet member is fixed to an upstream end of the discharge tray in the conveyance direction, and the other end is supported by the guide portion. As the guide portion is lifted up, the sheet member is drawn out from a part of the guide portion lower than the discharge outlet. The biasing member biases in a direction in which the sheet member is drawn into the guide portion.Type: ApplicationFiled: April 10, 2023Publication date: October 12, 2023Inventors: Takafumi Nakagawa, Yoshitaka Tokoro, Ren Isoda, Hirofumi Hagihara
-
Publication number: 20230298304Abstract: Provided is a sample image that is close to an actual object. The following steps 1 to 5 are performed. (Step 1) Image data (A0) corresponding to an image (A) is converted to acquire image data (A1). (Step 2) Image data (B0) corresponding to an article (B) is converted to acquire image data (B1) corresponding to a surface state of a region of the article (B) on which the image (A) is printed. (Step 3) Image data (A2) is acquired from the image data (A1) and the image data (B1). (Step 4) The image data (A2) is converted to acquire image data (A3). (Step 5) Image data (C0) corresponding to a product (C) is acquired from the image data (A3) and the image data (B0).Type: ApplicationFiled: July 8, 2020Publication date: September 21, 2023Applicant: TOSYO, Inc.Inventors: Takafumi NAKAGAWA, Souichiro ITO
-
Publication number: 20230286770Abstract: A document conveying device includes a sheet feeding tray, a discharge tray, a conveying mechanism and a document pressing member. On the sheet feeding tray, a document is placed. The discharge tray is provided below the sheet feeding tray. The conveying mechanism conveys the document from the sheet feeding tray to the discharge tray via a reading position. The document pressing member is provided on a lower surface of the sheet feeding tray, is capable of protruding and contracting in directions close to and away from the discharge tray, and presses the document discharged on the discharge tray.Type: ApplicationFiled: March 3, 2023Publication date: September 14, 2023Applicant: KYOCERA Document Solutions Inc.Inventors: Hirofumi HAGIHARA, Yoshitaka Tokoro, Takafumi Nakagawa
-
Publication number: 20230192427Abstract: A document conveying device according to the present disclosure includes a sheet feeding tray, a discharge tray, a feeding roller, a first lifting mechanism, a conveying mechanism, a support member and a second mechanism. On the sheet feeding tray, a document is stacked. The discharge tray is provided below the sheet feeding tray. The feeding roller feeds the document on the sheet feeding tray. The first lifting mechanism supports both end portions of the sheet feeding tray in a width direction intersecting a conveying direction of the document, and lifts and lowers the sheet feeding tray such that an upper surface of the document comes in contact with the feeding roller. The support member supports the sheet feeding feed tray on an upstream side of the first lifting mechanism in the conveying direction. The second lifting mechanism lifts and lowers the support member in synchronization with the sheet feeding tray.Type: ApplicationFiled: December 12, 2022Publication date: June 22, 2023Applicant: KYOCERA Document Solutions Inc.Inventors: Yoshitaka TOKORO, Takafumi NAKAGAWA
-
Patent number: 11652938Abstract: An image forming apparatus includes a sheet feeding tray, a sheet discharge tray, and a conveyance mechanism. The conveyance mechanism includes a guide part, a first turning shaft, a second turning shaft, a coupling member and a drive part. The guide part has a sheet discharge port. The first turning shaft supports the guide part so as to be turned around an axis along a width direction crossing to the conveyance direction. The second turning shaft is provided on the downstream side of the first turning shaft and below the guide part. The coupling member has one end portion supported by the second turning shaft in a turnable manner and the other end portion provided so as to be slidable with respect to the guide part. The drive part turns the coupling member around the second turning shaft to change a height of the sheet discharge port.Type: GrantFiled: February 10, 2022Date of Patent: May 16, 2023Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshitaka Tokoro, Takafumi Nakagawa
-
Patent number: 11572246Abstract: Provided is a document conveying apparatus that properly discharges documents regardless of the amount of documents stacked on a discharge tray without complicated construction of a transmission mechanism for transmitting a driving force to conveying rollers. A conveying roller pair is provided at an end portion on an upstream side. A swing mechanism swings a discharge mechanism centered around a drive shaft of the conveying roller pair. An upper surface height measuring unit measures the height of the upper surface of documents stacked on the discharge tray. A control unit, by causing the swing mechanism to swing the discharge mechanism according to the height measured by the upper surface height measuring unit, performs control so that the difference between a discharge port and the upper surface of the documents stacked on the discharge tray is within a specified range.Type: GrantFiled: October 21, 2020Date of Patent: February 7, 2023Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshiaki Tashiro, Yoshitaka Tokoro, Kenichiro Kawasaki, Takafumi Nakagawa, Hirofumi Hagihara
-
Publication number: 20220263961Abstract: An image forming apparatus includes a sheet feeding tray, a sheet discharge tray, and a conveyance mechanism. The conveyance mechanism includes a guide part, a first turning shaft, a second turning shaft, a coupling member and a drive part. The guide part has a sheet discharge port. The first turning shaft supports the guide part so as to be turned around an axis along a width direction crossing to the conveyance direction. The second turning shaft is provided on the downstream side of the first turning shaft and below the guide part. The coupling member has one end portion supported by the second turning shaft in a turnable manner and the other end portion provided so as to be slidable with respect to the guide part. The drive part turns the coupling member around the second turning shaft to change a height of the sheet discharge port.Type: ApplicationFiled: February 10, 2022Publication date: August 18, 2022Applicant: KYOCERA Document Solutions Inc.Inventors: Yoshitaka TOKORO, Takafumi NAKAGAWA
-
Patent number: 11390481Abstract: A document conveyance apparatus includes a first conveyance path, a first image reading part, a curved second conveyance path, a third conveyance path, a branch guide, a first discharge port, a document stacking section, a second discharge port and a tray support part. The first conveyance path extends linearly. The curved second conveyance path is branched from the first conveyance path at a branch point. The third conveyance path is branched from the first conveyance path at the branch point and extends linearly. Through the first discharge port, the document conveyed along the second conveyance path is discharged. The document stacking section is provided with a discharge tray. Through the second discharge port, the document conveyed along the third conveyance path is discharged. To the tray support part, the detached discharge tray is supported such that the document discharged through the second discharge port is stacked.Type: GrantFiled: September 28, 2020Date of Patent: July 19, 2022Assignee: KYOCERA Document Solutions Inc.Inventors: Kenichiro Kawasaki, Yoshiaki Tashiro, Yoshitaka Tokoro, Takafumi Nakagawa, Hirofumi Hagihara
-
Patent number: 11252294Abstract: A document conveyance apparatus includes a first conveyance path, a first image reading part, a second conveyance path, a third conveyance path and a branch guide. The first conveyance path extends linearly. The first image reading part reads an image on one face of the document conveyed along the first conveyance path. The second conveyance path branches from the first conveyance path at a branch point on a downstream side of the first reading part in a conveyance direction of the document and is formed to be curved. The third conveyance path branches from the first conveyance path at the branch point and extends linearly in a same extending direction as an extending direction of the first conveyance path. The branch guide is provided at the branch point and guides the document to the second conveyance path or to the third conveyance path.Type: GrantFiled: September 22, 2020Date of Patent: February 15, 2022Assignee: KYOCERA Document Solutions Inc.Inventors: Takafumi Nakagawa, Yoshiaki Tashiro, Kenichiro Kawasaki, Yoshitaka Tokoro, Hirofumi Hagihara
-
Patent number: 11215943Abstract: A fixing device to fix an unfixed toner image to the sheet includes a fixing belt, a guide plate, a support member and a pressing roller. The fixing belt has endless shape and rotates with a conveyance of the sheet. The guide plate guides the fixing belt from an inside of the fixing belt so as to rotate. The support member supports the fixing belt along a conveyance path of the sheet from the inside. The pressing roller presses the fixing belt on the support member from an outside of the fixing belt. The fixing belt has a belt width wider than a guide width of the guide plate in a rotational axial direction of the fixing belt. Both end edges of the guide plate in the rotational axial direction are formed to have a shape containing a shape not parallel to a rotational direction of the fixing belt.Type: GrantFiled: May 29, 2020Date of Patent: January 4, 2022Assignee: KYOCERA Document Solutions Inc.Inventor: Takafumi Nakagawa
-
Patent number: 11117685Abstract: A reaction wheel detects an angular momentum. A satellite controller selects a target thruster based on the detected angular momentum. A power supply apparatus changes adjustment electric power for the target thruster. A flow rate adjustment apparatus supplies a propellant to the target thruster at a flow rate corresponding to the adjustment electric power. This changes a thrust of the target thruster. When a discharge current of the target thruster does not become a target current, the power supply apparatus further changes the adjustment electric power for the target thruster.Type: GrantFiled: June 28, 2016Date of Patent: September 14, 2021Assignee: Mitsubishi Electric CorporationInventors: Masaya Hosoda, Yutaro Tanaka, Takafumi Nakagawa
-
Publication number: 20210114834Abstract: Provided is a document conveying apparatus that properly discharges documents regardless of the amount of documents stacked on a discharge tray without complicated construction of a transmission mechanism for transmitting a driving force to conveying rollers. A conveying roller pair is provided at an end portion on an upstream side. A swing mechanism swings a discharge mechanism centered around a drive shaft of the conveying roller pair. An upper surface height measuring unit measures the height of the upper surface of documents stacked on the discharge tray. A control unit, by causing the swing mechanism to swing the discharge mechanism according to the height measured by the upper surface height measuring unit, performs control so that the difference between a discharge port and the upper surface of the documents stacked on the discharge tray is within a specified range.Type: ApplicationFiled: October 21, 2020Publication date: April 22, 2021Applicant: KYOCERA Document Solutions Inc.Inventors: Yoshiaki TASHIRO, Yoshitaka TOKORO, Kenichiro KAWASAKI, Takafumi NAKAGAWA, Hirofumi HAGIHARA
-
Publication number: 20210101769Abstract: A document conveyance apparatus includes a first conveyance path, a first image reading part, a curved second conveyance path, a third conveyance path, a branch guide, a first discharge port, a document stacking section, a second discharge port and a tray support part. The first conveyance path extends linearly. The curved second conveyance path is branched from the first conveyance path at a branch point. The third conveyance path is branched from the first conveyance path at the branch point and extends linearly. Through the first discharge port, the document conveyed along the second conveyance path is discharged. The document stacking section is provided with a discharge tray. Through the second discharge port, the document conveyed along the third conveyance path is discharged. To the tray support part, the detached discharge tray is supported such that the document discharged through the second discharge port is stacked.Type: ApplicationFiled: September 28, 2020Publication date: April 8, 2021Applicant: KYOCERA Document Solutions Inc.Inventors: Kenichiro KAWASAKI, Yoshiaki TASHIRO, Yoshitaka TOKORO, Takafumi NAKAGAWA, Hirofumi HAGIHARA
-
Publication number: 20210099593Abstract: A document conveyance apparatus includes a first conveyance path, a first image reading part, a second conveyance path, a third conveyance path and a branch guide. The first conveyance path extends linearly. The first image reading part reads an image on one face of the document conveyed along the first conveyance path. The second conveyance path branches from the first conveyance path at a branch point on a downstream side of the first reading part in a conveyance direction of the document and is formed to be curved. The third conveyance path branches from the first conveyance path at the branch point and extends linearly in a same extending direction as an extending direction of the first conveyance path. The branch guide is provided at the branch point and guides the document to the second conveyance path or to the third conveyance path.Type: ApplicationFiled: September 22, 2020Publication date: April 1, 2021Applicant: KYOCERA Document Solutions Inc.Inventors: Takafumi NAKAGAWA, Yoshiaki TASHIRO, Kenichiro KAWASAKI, Yoshitaka TOKORO, Hirofumi HAGIHARA