Patents by Inventor Shunsuke Okazaki
Shunsuke Okazaki 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: 9975717Abstract: A sheet feeding apparatus includes a sheet presence/absence detection sensor configured to detect presence or absence of a sheet on a stacking device, a sheet surface detection sensor configured to detect that a stacking tray is raised to enable a sheet to be fed, a separation cam, and a control unit. The control unit is configured to determine that the mounting state of a feeding holder to a holder support unit is defective when the sheet surface detection sensor detects that the sheet can be fed when the sheet presence/absence detection sensor detects absence of a sheet before sheet feeding processing by a pickup roller.Type: GrantFiled: January 23, 2017Date of Patent: May 22, 2018Assignee: Canon Kabushiki KaishaInventors: Yasuhito Fujinuma, Shunsuke Okazaki
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Publication number: 20180050878Abstract: A sheet supporting apparatus includes a body, a supporting portion configured to be held in an elevating manner by the body and to support a sheet, a sheet regulation portion regulating a position of the sheet supported on the supporting portion, a movement portion capable of moving between a first position where the sheet regulation portion regulates the position of the sheet supported on the supporting portion, and a second position where the supporting portion is regulated from elevating with respect to the body, and a movement regulation unit regulating the movement portion from moving to the second position.Type: ApplicationFiled: October 31, 2017Publication date: February 22, 2018Inventors: Shunsuke Okazaki, Akira Matsushima
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Patent number: 9840382Abstract: A sheet supporting apparatus includes a body, a supporting portion configured to be held in an elevating manner by the body and to support a sheet, a sheet regulation portion regulating a position of the sheet supported on the supporting portion, a movement portion capable of moving between a first position where the sheet regulation portion regulates the position of the sheet supported on the supporting portion, and a second position where the supporting portion is regulated from elevating with respect to the body, and a movement regulation unit regulating the movement portion from moving to the second position.Type: GrantFiled: April 4, 2016Date of Patent: December 12, 2017Assignee: Canon Kabushiki KaishaInventors: Shunsuke Okazaki, Akira Matsushima
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Publication number: 20170217707Abstract: A sheet feeding apparatus includes a sheet presence/absence detection sensor configured to detect presence or absence of a sheet on a stacking device, a sheet surface detection sensor configured to detect that a stacking tray is raised to enable a sheet to be fed, a separation cam, and a control unit. The control unit is configured to determine that the mounting state of a feeding holder to a holder support unit is defective when the sheet surface detection sensor detects that the sheet can be fed when the sheet presence/absence detection sensor detects absence of a sheet before sheet feeding processing by a pickup roller.Type: ApplicationFiled: January 23, 2017Publication date: August 3, 2017Inventors: Yasuhito Fujinuma, Shunsuke Okazaki
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Publication number: 20160297631Abstract: A sheet supporting apparatus includes a body, a supporting portion configured to be held in an elevating manner by the body and to support a sheet, a sheet regulation portion regulating a position of the sheet supported on the supporting portion, a movement portion capable of moving between a first position where the sheet regulation portion regulates the position of the sheet supported on the supporting portion, and a second position where the supporting portion is regulated from elevating with respect to the body, and a movement regulation unit regulating the movement portion from moving to the second position.Type: ApplicationFiled: April 4, 2016Publication date: October 13, 2016Inventors: Shunsuke Okazaki, Akira Matsushima
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Patent number: 9126789Abstract: The present invention provides an image forming apparatus that can facilitate a replacement of a sheet feeding portion. When a detecting portion detects that a sheet feeding cassette is mounted, a controller controls a driving portion in such a manner as to lift a sheet supporting plate for the mounted sheet feeding cassette. When the detecting portion detects that a sheet feeding cassette is mounted, the controller controls a driving portion in such a manner as not to lift a sheet supporting plate for the mounted sheet feeding cassette in the case where it is determined that a sheet feeding cassette nearest a feeding roller of the mounted sheet feeding cassette is drawn or detached.Type: GrantFiled: July 16, 2014Date of Patent: September 8, 2015Assignee: Canon Kabushiki KaishaInventors: Hirofumi Hori, Ryuji Hamasaki, Shunsuke Okazaki
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Publication number: 20150021847Abstract: The present invention provides an image forming apparatus that can facilitate a replacement of a sheet feeding portion. When a detecting portion detects that a sheet feeding cassette is mounted, a controller controls a driving portion in such a manner as to lift a sheet supporting plate for the mounted sheet feeding cassette. When the detecting portion detects that a sheet feeding cassette is mounted, the controller controls a driving portion in such a manner as not to lift a sheet supporting plate for the mounted sheet feeding cassette in the case where it is determined that a sheet feeding cassette nearest a feeding roller of the mounted sheet feeding cassette is drawn or detached.Type: ApplicationFiled: July 16, 2014Publication date: January 22, 2015Inventors: Hirofumi Hori, Ryuji Hamasaki, Shunsuke Okazaki
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Patent number: 8727339Abstract: When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.Type: GrantFiled: April 1, 2013Date of Patent: May 20, 2014Assignee: Canon Kabushiki KaishaInventors: Akira Matsushima, Yasuhiro Uchida, Shunsuke Okazaki, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa
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Patent number: 8714543Abstract: The present invention relates a sheet feeding apparatus with a lifting and lowering mechanism in a sheet deck 2, which includes abutting portions 101a to 101d which makes wire hanging portions 64a to 64d of a sheet stacking table 52 abut thereon and makes the sheet stacking table 52 lockable with respect to a storing portion 61. The mechanism also includes a pulse motor 27 and a one-way clutch 40. A controller 5 drives the pulse motor 27 to be rotated in a lifting direction of the sheet stacking table 52, further drives the pulse motor 27 to be rotated in the same direction even after the wire hanging portions 64a to 64d abut on the abutting portions 101a to 101d to cause the pulse motor 27 to step out, and renders the pulse motor 27 non-conductive. Thus, the wire hanging portions is locked to abut on the abutting portions.Type: GrantFiled: March 30, 2012Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventors: Akira Matsushima, Shunsuke Okazaki
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Patent number: 8556253Abstract: The sheet feeding apparatus includes an apparatus body, a sheet cassette, a positioning member which includes a positioning pin arranged at one of the apparatus body and the sheet cassette and a positioning hole arranged at the other of the apparatus body and the sheet cassette and which performs positioning of the sheet cassette owing to fitting of the positioning pin with the positioning hole when the sheet cassette is slidingly moved to an attached position, and a restriction member which performs restriction of movement of the sheet cassette in the horizontal direction being perpendicular to a sliding direction from a drawn position to a fitting beginning position where fitting of the positioning member begins and which releases restriction of the movement of the sheet cassette in the horizontal direction from the fitting beginning position to the attached position.Type: GrantFiled: July 23, 2012Date of Patent: October 15, 2013Assignee: Canon Kabushikia KaishaInventor: Shunsuke Okazaki
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Patent number: 8430393Abstract: When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.Type: GrantFiled: July 12, 2010Date of Patent: April 30, 2013Assignee: Canon Kabushiki KaishaInventors: Akira Matsushima, Yasuhiro Uchida, Shunsuke Okazaki, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa
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Publication number: 20130026701Abstract: The sheet feeding apparatus includes an apparatus body, a sheet cassette, a positioning member which includes a positioning pin arranged at one of the apparatus body and the sheet cassette and a positioning hole arranged at the other of the apparatus body and the sheet cassette and which performs positioning of the sheet cassette owing to fitting of the positioning pin with the positioning hole when the sheet cassette is slidingly moved to an attached position, and a restriction member which performs restriction of movement of the sheet cassette in the horizontal direction being perpendicular to a sliding direction from a drawn position to a fitting beginning position where fitting of the positioning member begins and which releases restriction of the movement of the sheet cassette in the horizontal direction from the fitting beginning position to the attached position.Type: ApplicationFiled: July 23, 2012Publication date: January 31, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Shunsuke Okazaki
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Publication number: 20120256367Abstract: The present invention relates a sheet feeding apparatus with a lifting and lowering mechanism in a sheet deck 2, which includes abutting portions 101a to 101d which makes wire hanging portions 64a to 64d of a sheet stacking table 52 abut thereon and makes the sheet stacking table 52 lockable with respect to a storing portion 61. The mechanism also includes a pulse motor 27 and a one-way clutch 40. A controller 5 drives the pulse motor 27 to be rotated in a lifting direction of the sheet stacking table 52, further drives the pulse motor 27 to be rotated in the same direction even after the wire hanging portions 64a to 64d abut on the abutting portions 101a to 101d to cause the pulse motor 27 to step out, and renders the pulse motor 27 non-conductive. Thus, the wire hanging portions is locked to abut on the abutting portions.Type: ApplicationFiled: March 30, 2012Publication date: October 11, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Akira Matsushima, Shunsuke Okazaki
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Publication number: 20110006469Abstract: When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.Type: ApplicationFiled: July 12, 2010Publication date: January 13, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Akira Matsushima, Yasuhiro Uchida, Shunsuke Okazaki, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa