Patents by Inventor Tetsuto Ueda
Tetsuto Ueda 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: 11945222Abstract: A film forming method includes applying liquids to a material by discharging the liquids from each of a plurality of discharge heads disposed along a transport direction of the material. Each of the discharge heads has a plurality of liquid discharge nozzles disposed along a direction intersecting the transport direction. The applying includes applying at least a first liquid, a second liquid, and a third liquid from each of the plurality of discharge heads. The second liquid is applied to a position substantially equal to a position to which the first liquid is applied along a width direction. The third liquid is applied to an intermediate position between the position to which the first liquid is applied and the position to which the second liquid is applied along the transport direction, the intermediate position being different from the position to which the first liquid is applied along the width direction.Type: GrantFiled: January 24, 2022Date of Patent: April 2, 2024Assignee: RICOH COMPANY, LTD.Inventor: Tetsuto Ueda
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Publication number: 20220258466Abstract: A film forming method includes applying liquids to a material by discharging the liquids from each of a plurality of discharge heads disposed along a transport direction of the material. Each of the discharge heads has a plurality of liquid discharge nozzles disposed along a direction intersecting the transport direction. The applying includes applying at least a first liquid, a second liquid, and a third liquid from each of the plurality of discharge heads. The second liquid is applied to a position substantially equal to a position to which the first liquid is applied along a width direction. The third liquid is applied to an intermediate position between the position to which the first liquid is applied and the position to which the second liquid is applied along the transport direction, the intermediate position being different from the position to which the first liquid is applied along the width direction.Type: ApplicationFiled: January 24, 2022Publication date: August 18, 2022Inventor: Tetsuto UEDA
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Patent number: 10919294Abstract: A liquid discharging device includes a carriage carrying a head configured to discharge a liquid onto a target, the liquid including an ink, the ink consisting water, an organic solvent, a coloring material, and a plurality of polysiloxane compounds, a driving unit configured to move the carriage and the target relatively to each other, a measuring unit configured to measure the distance between the carriage and the target, an image-capturing unit configured to capture a target image, and a setting unit configured to set a liquid discharging performance of the head based on a measurement result obtained by the measuring unit and the target image obtained by the image-capturing unit.Type: GrantFiled: March 15, 2019Date of Patent: February 16, 2021Assignee: Ricoh Company, Ltd.Inventors: Takuya Fujita, Hiromi Sakaguchi, Yuta Nakamura, Naoto Shimura, Yoshiaki Masuda, Tetsuto Ueda, Yoshimi Nemoto, Kenichi Taguma, Naohiro Toda, Shinya Seno, Nobuyuki Satoh
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Publication number: 20190283406Abstract: A liquid discharging device includes a carriage carrying a head configured to discharge a liquid onto a target, the liquid comprising an ink, the ink comprising water, an organic solvent, a coloring material, and a plurality of polysiloxane compounds, a driving unit configured to move the carriage and the target relatively to each other, a measuring unit configured to measure the distance between the carriage and the target, an image-capturing unit configured to capture a target image, and a setting unit configured to set a liquid discharging performance of the head based on a measurement result obtained by the measuring unit and the target image obtained by the image-capturing unit.Type: ApplicationFiled: March 15, 2019Publication date: September 19, 2019Inventors: Takuya FUJITA, Hiromi Sakaguchi, Yuta Nakamura, Naoto Shimura, Yoshiaki Masuda, Tetsuto Ueda, Yoshimi Nemoto, Kenichi Taguma, Naohiro Toda, Shinya Seno, Nobuyuki Satoh
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Patent number: 10120303Abstract: An image forming system includes a post-processing unit capable of performing a post-processing on the sheet on which the toner image is formed. The image forming system is capable of executing a transfer cleaning operation to more toner from a transfer member to an image bearer by electrostatic force caused by cleaning bias applied by a bias applying unit in a state where the image bearer and the transfer member are rotated, to clean the transfer member, as an inter-sheet operation performed when at least one of inter-sheet areas that exist on the image bearer during a successive image forming period. The image forming system is capable of executing a rotation stop operation to stop rotation of the image bearer and the transfer member, as the inter-sheet operation when the post-processing is performed, in addition to the transfer cleaning operation, before or after the transfer cleaning operation is executed.Type: GrantFiled: January 3, 2017Date of Patent: November 6, 2018Assignee: RICOH COMPANY, LTD.Inventors: Takeshi Kojima, Tomoya Ohmura, Sho Sekiguchi, Taichi Urayama, Kazuya Saitoh, Takuya Moriyama, Hiroomi Tamura, Tetsuto Ueda, Naoyuki Ozaki
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Patent number: 10065413Abstract: A liquid discharging device detects, among a plurality of nozzles of a liquid discharging head, a normal-discharging nozzle and a false-discharging nozzle, selects whether to recover discharging performance of the false-discharging nozzle by a cleaner or to compensate deterioration in an image caused by the false-discharging nozzle by a compensator using the normal-discharging nozzle according to the detected number of consecutive false-discharging nozzles, and performs operation according to the selection.Type: GrantFiled: December 8, 2016Date of Patent: September 4, 2018Assignee: Ricoh Company, Ltd.Inventors: Ryoh Yokoyama, Yoshimi Nemoto, Kenichi Taguma, Tetsuto Ueda, Naohiro Toda, Yasunobu Takagi, Shotaro Ueda
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Patent number: 9709919Abstract: A developing device includes a casing containing a two-component developer including toner and carrier, a developer bearer to transfer the developer on the developer bearer to a developing area, a toner density sensor to output an output value based on toner density of the developer, a toner density detection module to detect the toner density based on the output value of the toner density sensor and output characteristics relating the toner density and the output value, an acquisition module to acquire the output characteristics based on the output value of the toner density sensor relating a new developer and a predetermined toner density of the new developer, a bulk density fluctuation estimating module to estimate bulk density fluctuation for bulk density of the new developer, and a correction module to correct the output value based on the estimated bulk density fluctuation.Type: GrantFiled: May 22, 2015Date of Patent: July 18, 2017Assignee: RICOH COMPANY, LTD.Inventors: Kazuya Saitoh, Hiroomi Tamura, Tetsuto Ueda, Sho Sekiguchi
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Publication number: 20170165970Abstract: A liquid discharging device detects, among a plurality of nozzles of a liquid discharging head, a normal-discharging nozzle and a false-discharging nozzle, selects whether to recover discharging performance of the false-discharging nozzle by a cleaner or to compensate deterioration in an image caused by the false-discharging nozzle by a compensator using the normal-discharging nozzle according to the detected number of consecutive false-discharging nozzles, and performs operation according to the selection.Type: ApplicationFiled: December 8, 2016Publication date: June 15, 2017Inventors: Ryoh YOKOYAMA, Yoshimi Nemoto, Kenichi Taguma, Tetsuto Ueda, Naohiro Toda, Yasunobu Takagi, Shotaro Ueda
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Publication number: 20170115609Abstract: An image forming system includes a post-processing unit capable of performing a post-processing on the sheet on which the toner image is formed. The image forming system is capable of executing a transfer cleaning operation to more toner from a transfer member to an image bearer by electrostatic force caused by cleaning bias applied by a bias applying unit in a state where the image bearer and the transfer member are rotated, to clean the transfer member, as an inter-sheet operation performed when at least one of inter-sheet areas that exist on the image bearer during a successive image forming period. The image forming system is capable of executing a rotation stop operation to stop rotation of the image bearer and the transfer member, as the inter-sheet operation when the post-processing is performed, in addition to the transfer cleaning operation, before or after the transfer cleaning operation is executed.Type: ApplicationFiled: January 3, 2017Publication date: April 27, 2017Inventors: Takeshi KOJIMA, Tomoya OHMURA, Sho SEKIGUCHI, Taichi URAYAMA, Kazuya SAITOH, Takuya MORIYAMA, Hiroomi TAMURA, Tetsuto UEDA, Naoyuki OZAKI
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Patent number: 9575441Abstract: An image forming system includes a post-processing unit capable of performing a post-processing on the sheet on which the toner image is formed. The image forming system is capable of executing a transfer cleaning operation to move toner from a transfer member to an image bearer by electrostatic force caused by cleaning bias applied by a bias applying unit in a state where the image bearer and the transfer member are rotated, to clean the transfer member, as an inter-sheet operation performed when at least one of inter-sheet areas that exist on the image bearer during a successive image forming period. The image forming system is capable of executing a rotation stop operation to stop rotation of the image bearer and the transfer member, as the inter-sheet operation when the post-processing is performed, in addition to the transfer cleaning operation, before or after the transfer cleaning operation is executed.Type: GrantFiled: November 2, 2015Date of Patent: February 21, 2017Assignee: RICOH COMPANY, LTD.Inventors: Takeshi Kojima, Tomoya Ohmura, Sho Sekiguchi, Taichi Urayama, Kazuya Saitoh, Takuya Moriyama, Hiroomi Tamura, Tetsuto Ueda, Naoyuki Ozaki
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Patent number: 9454106Abstract: An image forming apparatus is provided in which, during a continuous sheet passing, in the case where a between-sheets time is short, none of a cleaning mode and a drive OFF mode is performed; in the case where the between-sheets time is of a medium length of time, the cleaning mode is performed but the drive OFF mode is not performed; and in the case where the between-sheets time is long, both the cleaning mode and the drive OFF mode are performed. As a result, degradation of an image bearer due to the cleaning bias is alleviated, decreased productivity due to the cleaning mode is alleviated, a problem is alleviated in which a back surface of a recording medium gets dirty due to toner adhered to a transfer rotation body, and another problem is alleviated in which the service life of a driven member is shortened.Type: GrantFiled: July 28, 2015Date of Patent: September 27, 2016Assignee: Ricoh Company, Ltd.Inventors: Sho Sekiguchi, Takeshi Kojima, Tomoya Ohmura, Hiroomi Tamura, Tetsuto Ueda, Kazuya Saitoh, Taichi Urayama, Takuya Moriyama, Naoyuki Ozaki
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Image forming apparatus and method of switching collected developer route in image forming apparatus
Patent number: 9442429Abstract: An image forming apparatus includes an image bearer; a developing device; a transfer device; a waste-developer container; a developer collecting device including a collected-developer conveyor, a waste channel, a reuse channel, and a channel switching member to switch a route between the waste channel and the reuse channel; a switching determiner to determine whether to dispose or reuse collected developer; an operating condition data collector to collect and store operating condition data used as a degradation speed index of developer in the developing device; a determination type selector to select, according to the degradation speed index, one of a first determination type based on an operating amount and a second determination type based on developer replacement data indicating an amount of developer replaced with supplied developer in the developing device; and a switching controller to control the channel switching member according to determination made by the switching determiner.Type: GrantFiled: July 28, 2015Date of Patent: September 13, 2016Assignee: RICOH COMPANY, LTD.Inventors: Tetsuto Ueda, Hiroomi Tamura, Kazuya Saitoh, Sho Sekiguchi, Hirokatsu Suzuki, Takeshi Kojima, Takuma Iwasaki, Taichi Urayama -
Publication number: 20160131999Abstract: An image forming system includes a post-processing unit capable of performing a post-processing on the sheet on which the toner image is formed. The image forming system is capable of executing a transfer cleaning operation to move toner from a transfer member to an image bearer by electrostatic force caused by cleaning bias applied by a bias applying unit in a state where the image bearer and the transfer member are rotated, to clean the transfer member, as an inter-sheet operation performed when at least one of inter-sheet areas that exist on the image bearer during a successive image forming period. The image forming system is capable of executing a rotation stop operation to stop rotation of the image bearer and the transfer member, as the inter-sheet operation when the post-processing is performed, in addition to the transfer cleaning operation, before or after the transfer cleaning operation is executed.Type: ApplicationFiled: November 2, 2015Publication date: May 12, 2016Inventors: Takeshi KOJIMA, Tomoya OHMURA, Sho SEKIGUCHI, Taichi URAYAMA, Kazuya SAITOH, Takuya MORIYAMA, Hiroomi TAMURA, Tetsuto UEDA, Naoyuki OZAKI
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Patent number: 9316997Abstract: An image forming apparatus that includes an image bearer, a developing device to develop a latent image, a transfer device to transfer a developed image from the image bearer, a developer collecting device to collect developer remaining on the image bearer, and a waste-developer container to contain developer to be disposed. The apparatus also includes a switching determiner to perform a determination of a preferred transfer amount of developer in a target period, an estimation of an accumulative consumption of developer in the target period, a determination of whether to dispose or reuse collected developer, and a determination of whether to perform switching between disposal and reuse of the collected developer based on comparison between the preferred transfer amount and the estimated accumulative consumption of developer. The apparatus also includes a switching controller to cause the developer collecting device to perform the switching between disposal and reuse.Type: GrantFiled: February 13, 2015Date of Patent: April 19, 2016Assignee: Ricoh Company, Ltd.Inventors: Tetsuto Ueda, Hiroomi Tamura, Kazuya Saitoh, Sho Sekiguchi, Hirokatsu Suzuki, Takeshi Kojima, Takuma Iwasaki
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IMAGE FORMING APPARATUS AND METHOD OF SWITCHING COLLECTED DEVELOPER ROUTE IN IMAGE FORMING APPARATUS
Publication number: 20160041504Abstract: An image forming apparatus includes an image bearer; a developing device; a transfer device; a waste-developer container; a developer collecting device including a collected-developer conveyor, a waste channel, a reuse channel, and a channel switching member to switch a route between the waste channel and the reuse channel; a switching determiner to determine whether to dispose or reuse collected developer; an operating condition data collector to collect and store operating condition data used as a degradation speed index of developer in the developing device; a determination type selector to select, according to the degradation speed index, one of a first determination type based on an operating amount and a second determination type based on developer replacement data indicating an amount of developer replaced with supplied developer in the developing device; and a switching controller to control the channel switching member according to determination made by the switching determiner.Type: ApplicationFiled: July 28, 2015Publication date: February 11, 2016Applicant: RICOH COMPANY, LTD.Inventors: Tetsuto UEDA, Hiroomi TAMURA, Kazuya SAITOH, Sho SEKIGUCHI, Hirokatsu SUZUKI, Takeshi KOJIMA, Takuma IWASAKI, Taichi URAYAMA -
Publication number: 20160041509Abstract: An image forming apparatus is provided in which, during a continuous sheet passing, in the case where a between-sheets time is short, none of a cleaning mode and a drive OFF mode is performed; in the case where the between-sheets time is of a medium length of time, the cleaning mode is performed but the drive OFF mode is not performed; and in the case where the between-sheets time is long, both the cleaning mode and the drive OFF mode are performed. As a result, degradation of an image bearer due to the cleaning bias is alleviated, decreased productivity due to the cleaning mode is alleviated, a problem is alleviated in which a back surface of a recording medium gets dirty due to toner adhered to a transfer rotation body, and another problem is alleviated in which the service life of a driven member is shortened.Type: ApplicationFiled: July 28, 2015Publication date: February 11, 2016Inventors: Sho SEKIGUCHI, Takeshi KOJIMA, Tomoya OHMURA, Hiroomi TAMURA, Tetsuto UEDA, Kazuya SAITOH, Taichi URAYAMA, Takuya MORIYAMA, Naoyuki OZAKI
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Publication number: 20150355572Abstract: A developing device includes a casing containing a two-component developer including toner and carrier, a developer bearer to transfer the developer on the developer bearer to a developing area, a toner density sensor to output an output value based on toner density of the developer, a toner density detection module to detect the toner density based on the output value of the toner density sensor and output characteristics relating the toner density and the output value, an acquisition module to acquire the output characteristics based on the output value of the toner density sensor relating a new developer and a predetermined toner density of the new developer, a bulk density fluctuation estimating module to estimate bulk density fluctuation for bulk density of the new developer, and a correction module to correct the output value based on the estimated bulk density fluctuation.Type: ApplicationFiled: May 22, 2015Publication date: December 10, 2015Inventors: Kazuya SAITOH, Hiroomi Tamura, Tetsuto Ueda, Sho Sekiguchi
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Publication number: 20150227108Abstract: An image forming apparatus includes an image bearer; a developing device to develop a latent image; a transfer device to transfer a developed image from the image bearer; a developer collecting device to collect developer remaining on the image bearer; a waste-developer container to contain developer to be disposed, a switching determiner to perform determination of a preferred transfer amount of developer in a target period, estimation of an accumulative consumption of developer in the target period, determination of whether to dispose or reuse collected developer collected by the developer collecting device, and determination of whether to perform switching between disposal and reuse of the collected developer based on comparison between the preferred transfer amount and the estimated accumulative consumption of developer; and a switching controller to cause the developer collecting device to perform the switching between disposal and reuse.Type: ApplicationFiled: February 13, 2015Publication date: August 13, 2015Applicant: RICOH COMPANY, LTD.Inventors: Tetsuto Ueda, Hiroomi Tamura, Kazuya Saitoh, Sho Sekiguchi, Hirokatsu Suzuki, Takeshi Kojima, Takuma Iwasaki
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Patent number: 9042778Abstract: A powder refilling device includes a refill powder chamber to accommodate a powder bag containing powder, an opener to open the powder bag inside the refill powder chamber, and a squeezer to squeeze the opened powder bag to discharge powder therefrom and reduce a volume of the opened powder bag.Type: GrantFiled: June 28, 2013Date of Patent: May 26, 2015Assignee: Ricoh Company, Ltd.Inventors: Kazuya Saitoh, Akio Kosuge, Hirokatsu Suzuki, Ryuji Yoshida, Takuya Suganuma, Tetsuto Ueda, Taichi Urayama, Sho Sekiguchi
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Publication number: 20140027012Abstract: A powder refilling device includes a refill powder chamber to accommodate a powder bag containing powder, an opener to open the powder bag inside the refill powder chamber, and a squeezer to squeeze the opened powder bag to discharge powder therefrom and reduce a volume of the opened powder bag.Type: ApplicationFiled: June 28, 2013Publication date: January 30, 2014Applicant: Ricoh Company, Ltd.Inventors: Kazuya SAITOH, Akio KOSUGE, Hirokatsu SUZUKI, Ryuji YOSHIDA, Takuya SUGANUMA, Tetsuto UEDA, Taichi URAYAMA, Sho SEKIGUCHI