Patents by Inventor Hironobu Ata
Hironobu Ata 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: 9207591Abstract: A fixing device includes a rotatable fixing member configured to heat and fix, onto a recording material, a toner image formed on the recording material, a restriction member configured to restrict movement of the rotatable fixing member in a generatrix direction of the rotatable fixing member, and a capture member configured to capture a component vaporized by heat. The capture member is arranged to face a curved surface portion of the rotatable fixing member and is positioned by the restriction member.Type: GrantFiled: November 19, 2013Date of Patent: December 8, 2015Assignee: Canon Kabushiki KaishaInventors: Yasuaki Matsumoto, Hironobu Ata, Fumiki Inui
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Publication number: 20140140720Abstract: A fixing device includes a rotatable fixing member configured to heat and fix, onto a recording material, a toner image formed on the recording material, a restriction member configured to restrict movement of the rotatable fixing member in a generatrix direction of the rotatable fixing member, and a capture member configured to capture a component vaporized by heat. The capture member is arranged to face a curved surface portion of the rotatable fixing member and is positioned by the restriction member.Type: ApplicationFiled: November 19, 2013Publication date: May 22, 2014Inventors: Yasuaki Matsumoto, Hironobu Ata, Fumiki Inui
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Patent number: 7637502Abstract: A sheet processing apparatus which perform a process to sheets comprising a stacking tray on which stacks the sheets to be performed a process; a discharge roller pair; a first path in which conveys a sheet to the discharge roller pair, shorter than the length of the minimum sheet size being conveyed in the sheet conveying direction; a second path branched from the first path and meeting with the first path at the upstream side in the sheet conveying direction of the discharge roller pair; and a path switching member, wherein a first sheet conveyed while processing the sheets on the stacking tray is guided into the first path by the path switching member, and when the front end of the first sheet projects from the discharge roller pair, the discharge roller pair is apart from each other and the first sheet is held in the first path, and the path switching member is changed over, and a second conveyed sheet is guided into the second path, when the front end of the second sheet projects from the discharge rolleType: GrantFiled: August 29, 2005Date of Patent: December 29, 2009Assignee: Canon Kabushiki KaishaInventors: Hironobu Ata, Atsushi Ogata, Kenichiro Isobe, Hiroharu Tsuji
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Patent number: 7630681Abstract: A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.Type: GrantFiled: April 22, 2008Date of Patent: December 8, 2009Assignee: Canon Kabushiki KaishaInventors: Takashi Kuwata, Masayoshi Fukatsu, Kenichiro Isobe, Hironobu Ata, Yasuyoshi Hayakawa
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Patent number: 7607659Abstract: A sheet conveyed to a sheet stacking portion is conveyed in a direction opposite to a sheet conveyance direction by a returning roller to bring a trailing edge of the sheet into abutment against a reference wall and regulate a trailing edge position of the sheet. A pressure portion which presses the sheet to the reference wall is pivotably provided between the returning roller and the reference wall. The pressure portion presses the sheet conveyed by the returning roller to the reference wall while urging the sheet with a first urging force and, after the sheet comes into abutment against the reference wall, is urged by the urging unit to press the sheet, the trailing edge position of which is regulated by the reference wall, with a second urging force larger than the first urging force to hold the sheet.Type: GrantFiled: October 28, 2005Date of Patent: October 27, 2009Assignee: Canon Kabushiki KaishaInventors: Masayoshi Fukatsu, Atsushi Ogata, Junichi Sekiyama, Hironobu Ata
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Patent number: 7588243Abstract: A sheet feeding apparatus in which a first sheet feeding cassette and a second sheet feeding cassette for containing sheets are arranged in a vertical direction, a first drawer and a second drawer for holding the first sheet feeding cassette and the second sheet feeding cassette, respectively, such that they can be drawn out, a second sheet feeding roller for feeding the sheets from the second sheet feeding cassette located below the first sheet feeding cassette is arranged lateral to the first drawer of the first sheet feeding cassette located above the second sheet feeding cassette so as to be positioned above the bottom surface of the first sheet feeding cassette, and a second sheet feeding unit is supported by being abutted against the first drawer of the first sheet feeding cassette.Type: GrantFiled: April 17, 2006Date of Patent: September 15, 2009Assignee: Canon Kabushiki KaishaInventors: Akio Nemoto, Hironobu Ata
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Publication number: 20080203653Abstract: A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.Type: ApplicationFiled: April 22, 2008Publication date: August 28, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Kuwata, Masayoshi Fukatsu, Kenichiro Isobe, Hironobu Ata, Yasuyoshi Hayakawa
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Patent number: 7386271Abstract: A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.Type: GrantFiled: March 24, 2005Date of Patent: June 10, 2008Assignee: Canon Kabushiki KaishaInventors: Takashi Kuwata, Masayoshi Fukatsu, Kenichiro Isobe, Hironobu Ata, Yasuyoshi Hayakawa
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Patent number: 7237774Abstract: The trailing edge of a sheet delivered to a treating tray for treating the sheet with respect to a delivering direction is made to abut against a trailing edge regulating member to thereby regulate the trailing edge position of the sheet. Next, a sheet delivery lever is reciprocally moved between a first position in which it is retracted to the upstream side of the trailing edge regulating member with respect to the sheet delivering direction and a second position in which it protrudes into the stacking area of the treating tray, to thereby push the trailing edge of the treated sheet and deliver the sheet onto a sheet stacking tray. Also, when this sheet delivery lever is to be moved from the second position to the first position, the sheet delivery lever is moved so as to be capable of passing by the sheet delivered to the treating tray, whereby even during the time when the sheet delivering lever is moved to the first position, the delivery of a succeeding sheet to the treating tray is made possible.Type: GrantFiled: April 15, 2004Date of Patent: July 3, 2007Assignee: Canon Kabushiki KaishaInventors: Masayoshi Fukatsu, Atsushi Ogata, Hironobu Ata
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Patent number: 7226050Abstract: A sheet post-treating apparatus is provided with a discharged sheet stacking tray displaceably provided in a casing portion for stacking thereon sheets discharged from the casing portion, and a holding portion for holding the discharged sheet stacking tray in a first position and a second position overlying the first position, and is designed such that the sheets are stacked on the discharged sheet stacking tray when in the first position, and therefore, when the sheet post-treating apparatus is incorporated into a printer and a cartridge in the printer is to be interchanged with a cartridge cover opened, a user can retract the discharged sheet stacking tray to the second position to thereby interchange the cartridge.Type: GrantFiled: July 20, 2005Date of Patent: June 5, 2007Assignee: Canon Kabushiki KaishaInventors: Junichi Sekiyama, Yasuyoshi Hayakawa, Takashi Kuwata, Atsushi Ogata, Kenichiro Isobe, Masayoshi Fukatsu, Hironobu Ata
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Publication number: 20060237893Abstract: A sheet feeding apparatus in which a first sheet feeding cassette and a second sheet feeding cassette for containing sheets are arranged in a vertical direction, a first drawer and a second drawer for holding the first sheet feeding cassette and the second sheet feeding cassette, respectively, such that they can be drawn out, a second sheet feeding roller for feeding the sheets from the second sheet feeding cassette located below the first sheet feeding cassette is arranged lateral to the first drawer of the first sheet feeding cassette located above the second sheet feeding cassette so as to be positioned above the bottom surface of the first sheet feeding cassette, and a second sheet feeding unit is supported by being abutted against the first drawer of the first sheet feeding cassette.Type: ApplicationFiled: April 17, 2006Publication date: October 26, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Akio Nemoto, Hironobu Ata
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Patent number: 7077395Abstract: A sheet after-treatment device equipped with a stapler main body which staples sheets fed between upper and lower jaws in an opened state with a staple by closing the upper and lower jaws, and a holder for holding the stapler main body, in which a sheet transport guide surface of an upstream-side portion of the holder and the lower jaw of the stapler main body are arranged in the area where the sheets are transported, and the sheet transport guide surface of the upstream-side portion of the stapler main body is situated above the lower jaw.Type: GrantFiled: May 6, 2003Date of Patent: July 18, 2006Assignee: Canon Kabushiki KaishaInventors: Hironobu Ata, Yasuyoshi Hayakawa, Takashi Kuwata, Kenichiro Isobe, Masayoshi Fukatsu
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Publication number: 20060097445Abstract: A sheet conveyed to a sheet stacking portion is conveyed in a direction opposite to a sheet conveyance direction by a returning roller to bring a trailing edge of the sheet into abutment against a reference wall and regulate a trailing edge position of the sheet. A pressure portion which presses the sheet to the reference wall is pivotably provided between the returning roller and the reference wall. The pressure portion presses the sheet conveyed by the returning roller to the reference wall while urging the sheet with a first urging force and, after the sheet comes into abutment against the reference wall, is urged by the urging unit to press the sheet, the trailing edge position of which is regulated by the reference wall, with a second urging force larger than the first urging force to hold the sheet.Type: ApplicationFiled: October 28, 2005Publication date: May 11, 2006Applicant: Canon Kabushiki KaishaInventors: Masayoshi Fukatsu, Atsushi Ogata, Junichi Sekiyama, Hironobu Ata
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Publication number: 20060071423Abstract: A sheet processing apparatus which perform a process to sheets comprising a stacking tray on which stacks the sheets to be performed a process; a discharge roller pair; a first path in which conveys a sheet to the discharge roller pair, shorter than the length of the minimum sheet size being conveyed in the sheet conveying direction; a second path branched from the first path and meeting with the first path at the upstream side in the sheet conveying direction of the discharge roller pair; and a path switching member, wherein a first sheet conveyed while processing the sheets on the stacking tray is guided into the first path by the path switching member, and when the front end of the first sheet projects from the discharge roller pair, the discharge roller pair is apart from each other and the first sheet is held in the first path, and the path switching member is changed over, and a second conveyed sheet is guided into the second path, when the front end of the second sheet projects from the discharge rolleType: ApplicationFiled: August 29, 2005Publication date: April 6, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Hironobu Ata, Atsushi Ogata, Kenichiro Isobe, Hiroharu Tsuji
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Patent number: 6973285Abstract: A sheet post-treating apparatus is provided with a discharged sheet stacking tray displaceably provided in a casing portion for stacking thereon sheets discharged from the casing portion, and a holding portion for holding the discharged sheet stacking tray in a first position and a second position overlying the first position, and is designed such that the sheets are stacked on the discharged sheet stacking tray when in the first position, and therefore, when the sheet post-treating apparatus is incorporated into a printer and a cartridge in the printer is to be interchanged with a cartridge cover opened, a user can retract the discharged sheet stacking tray to the second position to thereby interchange the cartridge.Type: GrantFiled: March 19, 2003Date of Patent: December 6, 2005Assignee: Canon Kabushiki KaishaInventors: Junichi Sekiyama, Yasuyoshi Hayakawa, Takashi Kuwata, Atsushi Ogata, Kenichiro Isobe, Masayoshi Fukatsu, Hironobu Ata
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Publication number: 20050248085Abstract: A sheet post-treating apparatus is provided with a discharged sheet stacking tray displaceably provided in a casing portion for stacking thereon sheets discharged from the casing portion, and a holding portion for holding the discharged sheet stacking tray in a first position and a second position overlying the first position, and is designed such that the sheets are stacked on the discharged sheet stacking tray when in the first position, and therefore, when the sheet post-treating apparatus is incorporated into a printer and a cartridge in the printer is to be interchanged with a cartridge cover opened, a user can retract the discharged sheet stacking tray to the second position to thereby interchange the cartridge.Type: ApplicationFiled: July 20, 2005Publication date: November 10, 2005Applicant: Canon Kabushiki KaishaInventors: Junichi Sekiyama, Yasuyoshi Hayakawa, Takashi Kuwata, Atsushi Ogata, Kenichiro Isobe, Masayoshi Fukatsu, Hironobu Ata
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Publication number: 20050220521Abstract: A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.Type: ApplicationFiled: March 24, 2005Publication date: October 6, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Kuwata, Masayoshi Fukatsu, Kenichiro Isobe, Hironobu Ata, Yasuyoshi Hayakawa
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Publication number: 20050133991Abstract: A sheet conveying apparatus provided with a pair of discharging rollers having a first roller and a second roller disposed in opposed relationship with the first roller, a roller supporting member which rotatably supports the first roller, and is movable between a first position in which the first roller can cooperate with the second roller to discharge a sheet and a second position in which the first roller is spaced apart from the second roller, a driving member which pivotally moves the roller supporting member, a drive transmitting portion which transmits drive to the driving member, and a single drive source which transmits the drive to the drive transmitting portion.Type: ApplicationFiled: November 18, 2004Publication date: June 23, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Hironobu Ata, Takashi Kuwata
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Publication number: 20040217543Abstract: The trailing edge of a sheet delivered to a treating tray for treating the sheet with respect to a delivering direction is made to abut against a trailing edge regulating member to thereby regulate the trailing edge position of the sheet. Next, a sheet delivery lever is reciprocally moved between a first position in which it is retracted to the upstream side of the trailing edge regulating member with respect to the sheet delivering direction and a second position in which it protrudes into the stacking area of the treating tray, to thereby push the trailing edge of the treated sheet and deliver the sheet onto a sheet stacking tray. Also, when this sheet delivery lever is to be moved from the second position to the first position, the sheet delivery lever is moved so as to be capable of passing by the sheet delivered to the treating tray, whereby even during the time when the sheet delivering lever is moved to the first position, the delivery of a succeeding sheet to the treating tray is made possible.Type: ApplicationFiled: April 15, 2004Publication date: November 4, 2004Applicant: Canon Kabushiki KaishaInventors: Masayoshi Fukatsu, Atsushi Ogata, Hironobu Ata
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Patent number: 6722646Abstract: A sheet treating apparatus including the first intermediate stacking portion for hitting an edge of a sheet in a transport direction against a wall to align the sheet, a pair of delivery rollers for delivering the sheet from the first intermediate stacking portion, the second intermediate stacking portion for carrying-in and supporting the sheet downstream of the pair of delivery rollers in the transport direction and aligning edges of the sheet in a cross direction perpendicular to the transport direction, a sheet stacking portion located below the second intermediate stacking portion in the gravitational direction, and a full load detecting unit for detecting full load of sheets on the sheet stacking portion, in which the full load detecting unit contacts an upper surface of sheets on the sheet stacking portion with a full load detecting flag, which has a pivotal fulcrum in a higher position than that of the pair of delivery rollers to detect a height of the upper surface, and does not perform full load detType: GrantFiled: February 14, 2003Date of Patent: April 20, 2004Assignee: Canon Kabushiki KaishaInventors: Junichi Sekiyama, Yasuyoshi Hayakawa, Takashi Kuwata, Kenichiro Isobe, Masayoshi Fukatsu, Hironobu Ata