Patents by Inventor Tetsuo Isomura
Tetsuo Isomura 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: 20170176924Abstract: To provide a developer supply container and a developer supplying system with which the discharging of the developer from the developer supply container to the developer replenishing apparatus can be carried out properly from the beginning.Type: ApplicationFiled: March 7, 2017Publication date: June 22, 2017Inventors: Katsuya Murakami, Toshiaki Nagashima, Fumio Tazawa, Ayatomo Okino, Yusuke Yamada, Nobuo Nakajima, Tetsuo Isomura
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Patent number: 9632455Abstract: A developer supply container includes a developer accommodating portion for accommodating a developer, a discharge opening for permitting discharging of the developer from the developer accommodating portion, a drive receiving portion for receiving a driving force, and a pump portion capable of being driven by the driving force received by the drive receiving portion to alternate an internal pressure of the developer accommodating portion between a pressure lower than an ambient pressure and a pressure higher than the ambient pressure by increasing and decreasing a volume of the pump portion. A position of the pump portion is set such that the pump portion starts with a stroke in which the volume increases in an initial action of the pump portion.Type: GrantFiled: November 16, 2015Date of Patent: April 25, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Katsuya Murakami, Toshiaki Nagashima, Fumio Tazawa, Ayatomo Okino, Yusuke Yamada, Nobuo Nakajima, Tetsuo Isomura
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Publication number: 20160070202Abstract: To provide a developer supply container and a developer supplying system with which the discharging of the developer from the developer supply container to the developer replenishing apparatus can be carried out properly from the beginning.Type: ApplicationFiled: November 16, 2015Publication date: March 10, 2016Inventors: Katsuya Murakami, Toshiaki Nagashima, Fumio Tazawa, Ayatomo Okino, Yusuke Yamada, Nobuo Nakajima, Tetsuo Isomura
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Patent number: 9229364Abstract: A developer supply container includes a developer accommodating portion for accommodating a developer, a discharge opening for permitting discharging of the developer from the developer accommodating portion, a drive inputting portion for receiving a driving force, and a pump portion. The pump portion is driven by the driving force received by the drive inputting portion to alternate an internal pressure of the developer accommodating portion between a pressure lower than an ambient pressure and a pressure higher than the ambient pressure. In addition, a regulating portion regulates a position of the pump portion at a start of operation of the pump portion so that in an initial operational period of the pump portion, air is taken into the developer accommodating portion through the discharge opening, and a nozzle portion connected to the pump portion and has an opening at an end that is disposed adjacent to the discharge opening.Type: GrantFiled: March 13, 2013Date of Patent: January 5, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Katsuya Murakami, Toshiaki Nagashima, Fumio Tazawa, Ayatomo Okino, Yusuke Yamada, Nobuo Nakajima, Tetsuo Isomura
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Patent number: 8517064Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.Type: GrantFiled: September 22, 2011Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
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Patent number: 8205646Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.Type: GrantFiled: August 2, 2010Date of Patent: June 26, 2012Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
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Publication number: 20120006446Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.Type: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
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Patent number: 8027621Abstract: A developer supply case which is detachably attachable to an inserted portion of an image forming apparatus body includes a case body which stores a developer in its inside; an engaging portion which causes an inserting load W when engaged with an engaged portion provided in the image forming apparatus at completion of insertion of the developer supply case into the inserted portion; and a load causing portion which is provided so as to abut part of the inserted portion in insertion of the developer supply case into the inserted portion and causes an inserting load P1 before the engaging portion is engaged with the engaged portion, wherein the inserting load W and the inserting load P1 satisfy the following relation: P1?W.Type: GrantFiled: March 21, 2011Date of Patent: September 27, 2011Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Teruaki Tsurusaki, Yukihiro Kitozaki
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Publication number: 20110164898Abstract: A developer supply case which is detachably attachable to an inserted portion of an image forming apparatus body includes a case body which stores a developer in its inside; an engaging portion which causes an inserting load W when engaged with an engaged portion provided in the image forming apparatus at completion of insertion of the developer supply case into the inserted portion; and a load causing portion which is provided so as to abut part of the inserted portion in insertion of the developer supply case into the inserted portion and causes an inserting load P1 before the engaging portion is engaged with the engaged portion, wherein the inserting load W and the inserting load P1 satisfy the following relation: P1?W.Type: ApplicationFiled: March 21, 2011Publication date: July 7, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Isomura, Teruaki Tsurusaki, Yukihiro Kitozaki
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Patent number: 7953351Abstract: A developer supply case which is detachably attachable to an inserted portion of an image forming apparatus body includes a case body which stores a developer in its inside; an engaging portion which causes an inserting load W when engaged with an engaged portion provided in the image forming apparatus at completion of insertion of the developer supply case into the inserted portion; and a load causing portion which is provided so as to abut part of the inserted portion in insertion of the developer supply case into the inserted portion and causes an inserting load P1 before the engaging portion is engaged with the engaged portion, wherein the inserting load W and the inserting load P1 satisfy the following relation: P1?W.Type: GrantFiled: February 14, 2008Date of Patent: May 31, 2011Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Teruaki Tsurusaki, Yukihiro Kitozaki
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Publication number: 20100326564Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.Type: ApplicationFiled: August 2, 2010Publication date: December 30, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
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Patent number: 7836921Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.Type: GrantFiled: September 26, 2007Date of Patent: November 23, 2010Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
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Patent number: 7650103Abstract: A developer supply container detachably mountable to an image forming apparatus, and includes a container body having a developer containing portion; a discharging opening, provided in the container body; a gas container storing a compressed gas; a plate-like member, disposed at a position between the container body and the gas container, and configured to move toward the discharge opening to discharge the developer in the developer containing portion through the discharge opening; a switch portion, operable from the image forming apparatus, configured and positioned to release the compressed gas from the gas container so that the plate-like member moves toward the discharge opening; and an urging portion configured and positioned to urge the switch portion to stop the release of the compressed gas from the gas container.Type: GrantFiled: June 10, 2005Date of Patent: January 19, 2010Assignee: Canon Kabushiki KaishaInventor: Tetsuo Isomura
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Patent number: 7433634Abstract: A developer container for feeding and discharging developer by rotationally moving about a rotation axis includes a container body for containing developer and is provided with a discharge opening for permitting discharge of the developer, and developer movement suppression means disposed inside and adjacent to the discharge opening. The developer movement suppression means includes a first wall member for scooping the developer contained in the container body by rotational movement of the container body and a second wall member, disposed at an end portion of the first wall member with respect to a direction of the rotation axis, for suppressing movement of the developer scooped by the first wall member while permitting the developer to partly move from one side to the other side thereof.Type: GrantFiled: August 11, 2005Date of Patent: October 7, 2008Assignee: Canon Kabushiki KaishaInventors: Ayatomo Okino, Hironori Minagawa, Tetsuo Isomura
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Publication number: 20080199224Abstract: A developer supply case which is detachably attachable to an inserted portion of an image forming apparatus body includes a case body which stores a developer in its inside; an engaging portion which causes an inserting load W when engaged with an engaged portion provided in the image forming apparatus at completion of insertion of the developer supply case into the inserted portion; and a load causing portion which is provided so as to abut part of the inserted portion in insertion of the developer supply case into the inserted portion and causes an inserting load P1 before the engaging portion is engaged with the engaged portion, wherein the inserting load W and the inserting load P1 satisfy the following relation: P1?W.Type: ApplicationFiled: February 14, 2008Publication date: August 21, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Isomura, Teruaki Tsurusaki, Yukihiro Kitozaki
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Publication number: 20080017272Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.Type: ApplicationFiled: September 26, 2007Publication date: January 24, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
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Publication number: 20070223972Abstract: A developer supply container detachably mountable to an image forming apparatus, the developer supply container includes a container body for accommodating a developer, the container body being provided with a discharge opening for permitting discharging of the developer; feeding means for feeding the developer in the container body toward the discharge opening; and a driving source for driving the feeding means.Type: ApplicationFiled: June 10, 2005Publication date: September 27, 2007Applicant: Canon Kabushiki KaishaInventor: Tetsuo Isomura
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Patent number: 7190925Abstract: A developer supply container for supplying a developer detachably set in an image forming apparatus, the developer supply container includes a main body for containing the developer; a discharge opening, provided in the main body, for discharging the developer; a plurality of feeding projections, provided projected from a curved inner surface, for feeding the developer in the main body toward the discharge opening with rotation of the main body, wherein each of the projections are linear without twisting.Type: GrantFiled: August 31, 2004Date of Patent: March 13, 2007Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Yutaka Ban, Yusuke Yamada, Kazuhiko Omata, Junko Yoshikawa, Hironori Minagawa
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Patent number: D530359Type: GrantFiled: February 17, 2006Date of Patent: October 17, 2006Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Teruaki Tsurusaki, Hironori Minagawa, Hideki Hayashi
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Patent number: D530360Type: GrantFiled: February 17, 2006Date of Patent: October 17, 2006Assignee: Canon Kabushiki KaishaInventors: Tetsuo Isomura, Teruaki Tsurusaki, Hironori Minagawa, Hideki Hayashi