Patents by Inventor Nobuyuki Kashiwagi
Nobuyuki Kashiwagi 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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Patent number: 11339099Abstract: A honeycomb structure including: a honeycomb structure body having porous partition walls which define a plurality of cells extending from an inflow end face to an outflow end face to form through channels for a fluid, and a first circumferential wall which is disposed in at least a part of a circumference of the partition walls, and a second circumferential wall disposed to surround an outer side of the honeycomb structure body, wherein the honeycomb structure body does not have an interface between the partition walls and the first circumferential wall, and in a face perpendicular to an extending direction of the cells, a maximum thickness of the first circumferential wall is from 0.1 to 0.3 mm.Type: GrantFiled: February 27, 2018Date of Patent: May 24, 2022Assignee: NGK Insulators, Ltd.Inventors: Nobuyuki Kashiwagi, Yasunori Yamazaki, Hideyuki Toyoshima, Hirotaka Yamamoto
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Patent number: 10662118Abstract: A manufacturing method of a honeycomb structure includes a forming step of forming a honeycomb formed body by use of a kneaded material containing a cordierite forming raw material, a slurry coating step of coating a coating layer forming slurry which contains a cordierite forming raw material on four regions in a rotation area when each of two straight lines passing through the center of gravity of the cross section and extending in a diagonal direction of main quadrangular cells is rotated in a range of ±x° of the center of gravity in a circumferential surface, and a firing step of firing the honeycomb formed body on which the slurry is coated. The value x is in a range of 7 to 45, and the slurry is adjusted so that the coating layer has a porosity higher than that of the honeycomb structure body as much as 5% or more.Type: GrantFiled: January 19, 2018Date of Patent: May 26, 2020Assignee: NGK Insulators, Ltd.Inventors: Daniel Yukichi Kitaguchi, Nobuyuki Kashiwagi
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Publication number: 20180257998Abstract: A honeycomb structure including: a honeycomb structure body having porous partition walls which define a plurality of cells extending from an inflow end face to an outflow end face to form through channels for a fluid, and a first circumferential wall which is disposed in at least a part of a circumference of the partition walls, and a second circumferential wall disposed to surround an outer side of the honeycomb structure body, wherein the honeycomb structure body does not have an interface between the partition walls and the first circumferential wall, and in a face perpendicular to an extending direction of the cells, a maximum thickness of the first circumferential wall is from 0.1 to 0.3 mm.Type: ApplicationFiled: February 27, 2018Publication date: September 13, 2018Applicant: NGK INSULATORS, LTD.Inventors: Nobuyuki KASHIWAGI, Yasunori YAMAZAKI, Hideyuki TOYOSHIMA, Hirotaka YAMAMOTO
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Publication number: 20180215672Abstract: A manufacturing method of a honeycomb structure includes a forming step of forming a honeycomb formed body by use of a kneaded material containing a cordierite forming raw material, a slurry coating step of coating a coating layer forming slurry which contains a cordierite forming raw material on four regions in a rotation area when each of two straight lines passing through the center of gravity of the cross section and extending in a diagonal direction of main quadrangular cells is rotated in a range of ±x° of the center of gravity in a circumferential surface, and a firing step of firing the honeycomb formed body on which the slurry is coated. The value x is in a range of 7 to 45, and the slurry is adjusted so that the coating layer has a porosity higher than that of the honeycomb structure body as much as 5% or more.Type: ApplicationFiled: January 19, 2018Publication date: August 2, 2018Applicant: NGK INSULATORS, LTD.Inventors: Daniel Yukichi KITAGUCHI, Nobuyuki Kashiwagi
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Patent number: 7860444Abstract: A fixing device comprises a thermally fixing roller, a belt, and pushing means which pushes the belt toward the thermally fixing roller. A nipping region is formed between the belt and the thermally fixing roller. A maximum pressure is produced in an upstream end region of the thermally fixing roller in the direction of rotation in the nipping region, another maximum pressure is produced in a downstream end region thereof in the direction of rotation in the nipping region, and a pressure is produced in an intermediate region, which pressure being not higher than the maximum pressure in the upstream end region and not higher than the another maximum pressure in the downstream end region.Type: GrantFiled: October 29, 2008Date of Patent: December 28, 2010Assignee: Kyocera Mita CorporationInventors: Hiroshi Ito, Haruo Koyama, Takao Besshi, Nobuyuki Kashiwagi, Junko Ito, Tadashi Ohba, Toshimitsu Takeuchi
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Publication number: 20090129834Abstract: A fixing device comprises a thermally fixing roller, a belt, and pushing means which pushes the belt toward the thermally fixing roller. A nipping region is formed between the belt and the thermally fixing roller. A maximum pressure is produced in an upstream end region of the thermally fixing roller in the direction of rotation in the nipping region, another maximum pressure is produced in a downstream end region thereof in the direction of rotation in the nipping region, and a pressure is produced in an intermediate region, which pressure being not higher than the maximum pressure in the upstream end region and not higher than the another maximum pressure in the downstream end region.Type: ApplicationFiled: October 29, 2008Publication date: May 21, 2009Inventors: Hiroshi Ito, Haruo Koyama, Takao Besshi, Nobuyuki Kashiwagi, Junko Ito, Tadashi Ohba, Toshimitsu Takeuchi
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Patent number: 7466952Abstract: A fixing device comprises a thermally fixing roller, a belt, and pushing means which pushes the belt toward the thermally fixing roller. A nipping region is formed between the belt and the thermally fixing roller. A maximum pressure is produced in an upstream end region of the thermally fixing roller in the direction of rotation in the nipping region, another maximum pressure is produced in a downstream end region thereof in the direction of rotation in the nipping region, and a pressure is produced in an intermediate region, which pressure being not higher than the maximum pressure in the upstream end region and not higher than the another maximum pressure in the downstream end region.Type: GrantFiled: October 19, 2005Date of Patent: December 16, 2008Assignee: Kyocera Mita CorporationInventors: Hiroshi Ito, Haruo Koyama, Takao Besshi, Nobuyuki Kashiwagi, Junko Ito, Tadashi Ohba, Toshimitsu Takeuchi
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Publication number: 20070025784Abstract: A fixing device comprises a thermally fixing roller, a belt, and pushing means which pushes the belt toward the thermally fixing roller. A nipping region is formed between the belt and the thermally fixing roller. A maximum pressure is produced in an upstream end region of the thermally fixing roller in the direction of rotation in the nipping region, another maximum pressure is produced in a downstream end region thereof in the direction of rotation in the nipping region, and a pressure is produced in an intermediate region, which pressure being not higher than the maximum pressure in the upstream end region and not higher than the another maximum pressure in the downstream end region.Type: ApplicationFiled: October 19, 2005Publication date: February 1, 2007Inventors: Hiroshi Ito, Haruo Koyama, Takao Besshi, Nobuyuki Kashiwagi, Junko Ito, Tadashi Ohba, Toshimitsu Takeuchi
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Patent number: 6620570Abstract: An electrophotographic method which uses a single-layer organic photosensitive material drum having a single organic photosensitive layer of a thickness of not smaller than 25 &mgr;m formed on an electrically conducting blank tube with a surface roughness Ra of not larger than 0.6 &mgr;m and rotates the photosensitive material drum at a peripheral speed of not smaller than 400 mm/sec, in order to execute an image-forming processing that includes electric charging, exposure to image-bearing light, developing, transfer, cleaning by a blade and removal of electric charge. Though the photosensitive material drum rotates at a high speed and a large frictional force is exerted on the cleaning blade, damage to the blade is effectively suppressed, and image is stably formed for extended periods of time without permitting the cleaning to become defective.Type: GrantFiled: February 2, 2001Date of Patent: September 16, 2003Assignee: Kyocera-Mita CorporationInventors: Keizo Kimoto, Nobuyuki Kashiwagi, Hiroshi Shiomi
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Patent number: 6543759Abstract: A paper feeder is able to properly separate and convey the uppermost sheet of paper from sheets stacked beneath it in a paper bin while effectively preventing multiple paper sheet feeds and other paper feed problems. The paper feeder includes a paper separator for lifting upper sheets, and separating the uppermost sheet from the sheet immediately beneath it by blowing air against an upper-forward end of a stack of paper loaded in a paper bin, and a vacuum paper carrier for holding the uppermost sheet by suction and carrying it. The paper separator has lifting nozzles for lifting side ends of the upper sheets, by blowing air toward side portions, excluding a central portion, of the stack of paper loaded in the paper bin.Type: GrantFiled: February 20, 2001Date of Patent: April 8, 2003Assignee: Kyocera Mita CorporationInventors: Yoshihiro Yamaguchi, Masami Fuchi, Nobuyuki Kashiwagi, Kiyonori Yamamoto, Masaki Higashiyama
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Patent number: 6523821Abstract: A feeder apparatus arranged on a side of a main body of an image forming apparatus is provided with a top door and a vertical door. The top door is provided in an opening defined above a sheet stacker, and the vertical door is provided in an opening defined on a side of the sheet stacker to enable an operator to replenish sheets inside the feeder apparatus. Switches are provided to detect as to whether the top door or the vertical door is opened. The feeder apparatus is constructed in such a manner that upward movement of the sheet stacker is suspended when the top door is detected to be opened and that upward and downward movement of the sheet stacker is suspended when the vertical door is detected to be opened.Type: GrantFiled: February 21, 2001Date of Patent: February 25, 2003Assignee: Kyocera Mita CorporationInventors: Nobuyuki Kashiwagi, Masami Fuchi, Yasuyuki Hirai, Yoshihiro Yamaguchi, Yukio Hashimoto, Masaki Higashiyama
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Publication number: 20010017441Abstract: A paper feeder is able to properly separate and convey the uppermost sheet of paper from sheets stacked beneath it in a paper bin while effectively preventing multiple paper sheet feeds and other paper feed problems. The paper feeder includes a paper separator for lifting upper sheets, and separating the uppermost sheet from the sheet immediately beneath it by blowing air against an upper-forward end of a stack of paper loaded in a paper bin, and a vacuum paper carrier for holding the uppermost sheet by suction and carrying it. The paper separator has lifting nozzles for lifting side ends of the upper sheets, by blowing air toward side portions, excluding a central portion, of the stack of paper loaded in the paper bin.Type: ApplicationFiled: February 20, 2001Publication date: August 30, 2001Applicant: KYOCERA MITA CORPORATIONInventors: Yoshihiro Yamaguchi, Masami Fuchi, Nobuyuki Kashiwagi, Kiyonori Yamamoto, Masaki Higashiyama
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Publication number: 20010015521Abstract: A feeder apparatus arranged on a side of a main body of an image forming apparatus is provided with a top door and a vertical door. The top door is provided in an opening defined above a sheet stacker, and the vertical door is provided in an opening defined on a side of the sheet stacker to enable an operator to replenish sheets inside the feeder apparatus. Switches are provided to detect as to whether the top door or the vertical door is opened. The feeder apparatus is constructed in such a manner that upward movement of the sheet stacker is suspended when the top door is detected to be opened and that upward and downward movement of the sheet stacker is suspended when the vertical door is detected to be opened.Type: ApplicationFiled: February 21, 2001Publication date: August 23, 2001Applicant: KYOCERA MITA CORPORATIONInventors: Nobuyuki Kashiwagi, Masami Fuchi, Yasuyuki Hirai, Yoshihiro Yamaguchi, Yukio Hashimoto, Masaki Higashiyama
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Publication number: 20010012595Abstract: An electrophotographic method which uses a single-layer organic photosensitive material drum having a single organic photosensitive layer of a thickness of not smaller than 25 &mgr;m formed on an electrically conducting blank tube with a surface roughness Ra of not larger than 0.6 &mgr;m and rotates the photosensitive material drum at a peripheral speed of not smaller than 400 mm/sec, in order to execute an image-forming processing that includes electric charging, exposure to image-bearing light, developing, transfer, cleaning by a blade and removal of electric charge. Though the photosensitive material drum rotates at a high speed and a large frictional force is exerted on the cleaning blade, damage to the blade is effectively suppressed, and image is stably formed for extended periods of time without permitting the cleaning to become defective.Type: ApplicationFiled: February 2, 2001Publication date: August 9, 2001Applicant: KYOCERA MITA CORPORATIONInventors: Keizo Kimoto, Nobuyuki Kashiwagi, Hiroshi Shiomi
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Patent number: 5943527Abstract: A photosensitive drum unit for an electrostatographic printing apparatus is disclosed. The drum unit includes a drum tube formed with at least one opening at one axial end thereof. A flange member is configured to be inserted into the opening in the drum tube. The flange member is provided with a support hole into which a shaft pin is inserted for supporting the drum tube and flange member. An earth plate is formed with projections or claws that extend radially outward from a peripheral edge of the earth plate such that the projections contact with an inner peripheral surface of the drum tube. The earth plate is also formed with a pair of contact pieces extend axially away from the earth plate and also extend toward one another. The contact pieces are spaced apart from one another by a predetermined distance but are also configured to contact and engage a portion of the shaft pin.Type: GrantFiled: May 21, 1998Date of Patent: August 24, 1999Assignee: Mita Industrial Co., Ltd.Inventors: Nobuyuki Kashiwagi, Keizo Kimoto, Tadashi Sakuma