Patents by Inventor Yoshifumi Kajikawa
Yoshifumi Kajikawa 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: 20230244170Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: ApplicationFiled: April 5, 2023Publication date: August 3, 2023Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Tomoyasu YABUKI, Yoshifumi KAJIKAWA, Takashi SUZUKI, Takashi YASUDA, Takashi SHIMIZU
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Publication number: 20230205110Abstract: An image forming apparatus, including: a photoconductor; a developing device; a developer storage; a supplier configured to supply developer; an optical sensor; and a controller configured to execute: a developing process of developing an electrostatic latent image on the photoconductor; a usage-amount obtaining process of obtaining a usage amount of the developer; a supplying process of supplying the developer to the developing device every time when the obtained usage amount becomes equal to or greater than a first threshold; and a detecting process of detecting, by the optical sensor, an amount of the developer in the developing device every time when the obtained usage amount becomes equal to or greater than a second threshold larger than the first threshold, and wherein the controller is configured to execute the detecting process in a period different from a period in which the developing process is being executed.Type: ApplicationFiled: February 21, 2023Publication date: June 29, 2023Inventors: Takashi Suzuki, Kazuma Hinoue, Takashi Yasuda, Takashi Shimizu, Yoshifumi Kajikawa
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Patent number: 11644778Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: GrantFiled: May 25, 2022Date of Patent: May 9, 2023Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Tomoyasu Yabuki, Yoshifumi Kajikawa, Takashi Suzuki, Takashi Yasuda, Takashi Shimizu
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Patent number: 11599039Abstract: An image forming apparatus, including: a photoconductor; a developing device; a developer storage; a supplier configured to supply developer; an optical sensor; and a controller configured to execute: a developing process of developing an electrostatic latent image on the photoconductor; a usage-amount obtaining process of obtaining a usage amount of the developer; a supplying process of supplying the developer to the developing device every time when the obtained usage amount becomes equal to or greater than a first threshold; and a detecting process of detecting, by the optical sensor, an amount of the developer in the developing device every time when the obtained usage amount becomes equal to or greater than a second threshold larger than the first threshold, and wherein the controller is configured to execute the detecting process in a period different from a period in which the developing process is being executed.Type: GrantFiled: May 5, 2022Date of Patent: March 7, 2023Assignee: Brother Kogyo Kabushiki KaishaInventors: Takashi Suzuki, Kazuma Hinoue, Takashi Yasuda, Takashi Shimizu, Yoshifumi Kajikawa
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Publication number: 20220326635Abstract: An image forming apparatus, including: a photoconductor; a developing device; a developer storage; a supplier configured to supply developer; an optical sensor; and a controller configured to execute: a developing process of developing an electrostatic latent image on the photoconductor; a usage-amount obtaining process of obtaining a usage amount of the developer; a supplying process of supplying the developer to the developing device every time when the obtained usage amount becomes equal to or greater than a first threshold; and a detecting process of detecting, by the optical sensor, an amount of the developer in the developing device every time when the obtained usage amount becomes equal to or greater than a second threshold larger than the first threshold, and wherein the controller is configured to execute the detecting process in a period different from a period in which the developing process is being executed.Type: ApplicationFiled: May 5, 2022Publication date: October 13, 2022Inventors: Takashi Suzuki, Kazuma Hinoue, Takashi Yasuda, Takashi Shimizu, Yoshifumi Kajikawa
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Publication number: 20220291616Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: ApplicationFiled: May 25, 2022Publication date: September 15, 2022Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Tomoyasu YABUKI, Yoshifumi KAJIKAWA, Takashi SUZUKI, Takashi YASUDA, Takashi SHIMIZU
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Patent number: 11402782Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: GrantFiled: April 19, 2021Date of Patent: August 2, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Tomoyasu Yabuki, Yoshifumi Kajikawa, Takashi Suzuki, Takashi Yasuda, Takashi Shimizu
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Patent number: 11360406Abstract: An image forming apparatus, including: a photoconductor; a developing device; a developer storage; a supplier configured to supply developer; an optical sensor; and a controller configured to execute: a developing process of developing an electrostatic latent image on the photoconductor; a usage-amount obtaining process of obtaining a usage amount of the developer; a supplying process of supplying the developer to the developing device every time when the obtained usage amount becomes equal to or greater than a first threshold; and a detecting process of detecting, by the optical sensor, an amount of the developer in the developing device every time when the obtained usage amount becomes equal to or greater than a second threshold larger than the first threshold, and wherein the controller is configured to execute the detecting process in a period different from a period in which the developing process is being executed.Type: GrantFiled: September 21, 2020Date of Patent: June 14, 2022Assignee: Brother Kogyo Kabushiki KaishaInventors: Takashi Suzuki, Kazuma Hinoue, Takashi Yasuda, Takashi Shimizu, Yoshifumi Kajikawa
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Patent number: 11226572Abstract: A toner cartridge is mountable on a developing device including a developing roller. The developing device develops an electrostatic latent image formed on a photo conductor. The toner cartridge includes a housing in which toner is stored, and an auger rotatable and configured to supply the toner in the housing to the developing device. In a case where the developing device is installed on an image forming apparatus in a state in which the toner cartridge is mounted on the developing device, rotation of the auger is started before formation of the electrostatic latent image corresponding to a sheet is started, based on a signal indicating that the image forming apparatus detects the sheet.Type: GrantFiled: July 28, 2020Date of Patent: January 18, 2022Assignee: Brother Kogyo Kabushiki KaishaInventors: Takashi Suzuki, Kazuma Hinoue, Takashi Shimizu, Takashi Yasuda, Yoshifumi Kajikawa
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Publication number: 20210240119Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: ApplicationFiled: April 19, 2021Publication date: August 5, 2021Inventors: Tomoyasu YABUKI, Yoshifumi KAJIKAWA, Takashi SUZUKI, Takashi YASUDA, Takashi SHIMIZU
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Patent number: 11009821Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: GrantFiled: May 8, 2020Date of Patent: May 18, 2021Assignee: Brother Kogyo Kabushiki KaishaInventors: Tomoyasu Yabuki, Yoshifumi Kajikawa, Takashi Suzuki, Takashi Yasuda, Takashi Shimizu
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Publication number: 20210003941Abstract: An image forming apparatus, including: a photoconductor; a developing device; a developer storage; a supplier configured to supply developer; an optical sensor; and a controller configured to execute: a developing process of developing an electrostatic latent image on the photoconductor; a usage-amount obtaining process of obtaining a usage amount of the developer; a supplying process of supplying the developer to the developing device every time when the obtained usage amount becomes equal to or greater than a first threshold; and a detecting process of detecting, by the optical sensor, an amount of the developer in the developing device every time when the obtained usage amount becomes equal to or greater than a second threshold larger than the first threshold, and wherein the controller is configured to execute the detecting process in a period different from a period in which the developing process is being executed.Type: ApplicationFiled: September 21, 2020Publication date: January 7, 2021Inventors: Takashi Suzuki, Kazuma Hinoue, Takashi Yasuda, Takashi Shimizu, Yoshifumi Kajikawa
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Patent number: 10884737Abstract: An image processing device includes: a controller; and memory storing instructions that, when executed by the controller, cause the controller to perform operations including: acquiring target image data, in which a target image based on the target image data includes a plurality of partial images including a barcode; specifying the barcode in the target image; deciding a first direction being a direction perpendicular to bars making at least one specified barcode; specifying a blank range where the partial image is not positioned in the first direction and an object range where the partial image is positioned in the first direction; separating the target image to one or more separated target images in accordance with the specified blank range and the specified object range, the separated target image including the object range and excluding the blank range; and outputting image data corresponding to the separated target images.Type: GrantFiled: April 23, 2019Date of Patent: January 5, 2021Assignee: Brother Kogyo Kabushiki KaishaInventors: Yoshifumi Kajikawa, Tomohiko Hasegawa
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Publication number: 20200363750Abstract: An image forming apparatus, including: a photoconductor; an exposing device configured to expose the photoconductor and form an electrostatic latent image on the photoconductor; a developing device including a developing roller configured to form a developer image on the photoconductor; a transfer device configured to transfer the developer image to a sheet; a developer storage storing developer; a supplier configured to supply the developer from the developer storage to the developing device; a sheet feeder configured to convey the sheet toward the transfer device; a sheet sensor configured to detect the sheet conveyed toward the transfer device; and a controller, wherein the controller is configured to start a supplying process of supplying, by the supplier, the developer to the developing device before formation of the electrostatic latent image corresponding to the sheet is started, based on a signal indicating that the sheet sensor has detected the sheet.Type: ApplicationFiled: July 28, 2020Publication date: November 19, 2020Inventors: Takashi Suzuki, Kazuma Hinoue, Takashi Shimizu, Takashi Yasuda, Yoshifumi Kajikawa
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Patent number: 10809647Abstract: An image forming apparatus, including: a photoconductor; a developing device; a developer storage; a supplier configured to supply developer; an optical sensor; and a controller configured to execute: a developing process of developing an electrostatic latent image on the photoconductor; a usage-amount obtaining process of obtaining a usage amount of the developer; a supplying process of supplying the developer to the developing device every time when the obtained usage amount becomes equal to or greater than a first threshold; and a detecting process of detecting, by the optical sensor, an amount of the developer in the developing device every time when the obtained usage amount becomes equal to or greater than a second threshold larger than the first threshold, and wherein the controller is configured to execute the detecting process in a period different from a period in which the developing process is being executed.Type: GrantFiled: July 8, 2019Date of Patent: October 20, 2020Assignee: Brother Kogyo Kabushiki KaishaInventors: Takashi Suzuki, Kazuma Hinoue, Takashi Yasuda, Takashi Shimizu, Yoshifumi Kajikawa
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Patent number: 10754274Abstract: An image forming apparatus, including: a photoconductor; an exposing device configured to expose the photoconductor and form an electrostatic latent image on the photoconductor; a developing device including a developing roller configured to form a developer image on the photoconductor; a transfer device configured to transfer the developer image to a sheet; a developer storage storing developer; a supplier configured to supply the developer from the developer storage to the developing device; a sheet feeder configured to convey the sheet toward the transfer device; a sheet sensor configured to detect the sheet conveyed toward the transfer device; and a controller, wherein the controller is configured to start a supplying process of supplying, by the supplier, the developer to the developing device before formation of the electrostatic latent image corresponding to the sheet is started, based on a signal indicating that the sheet sensor has detected the sheet.Type: GrantFiled: March 29, 2018Date of Patent: August 25, 2020Assignee: Brother Kogyo Kabushiki KaishaInventors: Takashi Suzuki, Kazuma Hinoue, Takashi Shimizu, Takashi Yasuda, Yoshifumi Kajikawa
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Publication number: 20200264544Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: ApplicationFiled: May 8, 2020Publication date: August 20, 2020Inventors: Tomoyasu Yabuki, Yoshifumi Kajikawa, Takashi Suzuki, Takashi Yasuda, Takashi Shimizu
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Patent number: 10671002Abstract: An image forming apparatus, including: a housing; a photoconductor; a developing unit configured to form a developer image on the photoconductor; a developer cartridge storing developer, the cartridge being removably mountable on the housing, a supplier configured to supply the developer from the developer cartridge to the developing unit; and a controller configured to execute a first printing process of forming a developer image by use of the developer supplied from the developer cartridge, when the developer cartridge is being mounted on the housing, and a second printing process of forming a developer image by use of the developer remaining in the developing unit, when a usage amount of the developing unit is not less than a predetermined value and the developer cartridge is not being mounted on the housing, wherein the controller does not execute the second printing process when the usage amount is less than the predetermined value.Type: GrantFiled: July 5, 2018Date of Patent: June 2, 2020Assignee: Brother Kogyo Kabushiki KaishaInventors: Tomoyasu Yabuki, Yoshifumi Kajikawa, Takashi Suzuki, Takashi Yasuda, Takashi Shimizu
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Publication number: 20190354039Abstract: An image forming apparatus, including: a photoconductor; a developing device; a developer storage; a supplier configured to supply developer; an optical sensor; and a controller configured to execute: a developing process of developing an electrostatic latent image on the photoconductor; a usage-amount obtaining process of obtaining a usage amount of the developer; a supplying process of supplying the developer to the developing device every time when the obtained usage amount becomes equal to or greater than a first threshold; and a detecting process of detecting, by the optical sensor, an amount of the developer in the developing device every time when the obtained usage amount becomes equal to or greater than a second threshold larger than the first threshold, and wherein the controller is configured to execute the detecting process in a period different from a period in which the developing process is being executed.Type: ApplicationFiled: July 8, 2019Publication date: November 21, 2019Inventors: Takashi Suzuki, Kazuma Hinoue, Takashi Yasuda, Takashi Shimizu, Yoshifumi Kajikawa
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Publication number: 20190332377Abstract: An image processing device includes: a controller; and memory storing instructions that, when executed by the controller, cause the controller to perform operations including: acquiring target image data, in which a target image based on the target image data includes a plurality of partial images including a barcode; specifying the barcode in the target image; deciding a first direction being a direction perpendicular to bars making at least one specified barcode; specifying a blank range where the partial image is not positioned in the first direction and an object range where the partial image is positioned in the first direction; separating the target image to one or more separated target images in accordance with the specified blank range and the specified object range, the separated target image including the object range and excluding the blank range; and outputting image data corresponding to the separated target images.Type: ApplicationFiled: April 23, 2019Publication date: October 31, 2019Inventors: Yoshifumi KAJIKAWA, Tomohiko HASEGAWA