# US 2014/0193186 A1 · Sheet conveyance apparatus and image forming apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193186 A1 - Document ID: US20140193186A1 - Status: Published application - Kind: A1 - Application number: 14/149,673 - Filed: 2014-01-07 - Published: 2014-07-10 - Earliest claimed: 2013-01-10 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Yoichi Furuyama - Web page: https://patentgrep.com/patent/US20140193186A1 ## CPC - B65H 9/002: {changing orientation of sheet by only controlling movement of the forwarding means, i.e. without the use of stop or register wall} - B65H 7/10: responsive to incorrect side register (controlling transverse register of webs B65H23/032) - B65H 9/106: {using rotary driven elements as part acting on the article (B65H9/105 takes precedence; registering laterally while article is forwarded in principal direction B65H9/16)} - G03G 15/6561: {for sheet registration} - G03G 15/6567: {for deskewing or aligning} - G03G 15/657: {Feeding path after the transfer point and up to the fixing point, e.g. guides and feeding means for handling copy material carrying an unfused toner image} - B65H 2404/1521: rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A sheet conveyance apparatus includes a sheet conveyance unit configured to convey a sheet, a transfer unit disposed downstream of the sheet conveyance unit and configured to transfer a toner image onto the sheet, a shifting unit configured to shift the sheet conveyed by the sheet conveyance unit in a width direction by shifting the sheet conveyance unit, a detection unit configured to detect a position of the sheet in the width direction while the sheet is being conveyed by the transfer unit, and a control unit configured to control the shifting unit. The control unit causes the sheet conveyed by the sheet conveyance unit to shift in the width direction based on a result detected by the detection unit while the sheet is being conveyed by the transfer unit. ## Claims ### Claim 1 A sheet conveyance apparatus comprising: a sheet conveyance unit configured to convey a sheet; a transfer unit disposed downstream of the sheet conveyance unit and configured to transfer a toner image onto the sheet; a shifting unit configured to shift the sheet conveyed by the sheet conveyance unit in a width direction by shifting the sheet conveyance unit; a detection unit configured to detect a position of the sheet in the width direction while the sheet is being conveyed by the transfer unit; and a control unit configured to control the shifting unit, wherein the control unit causes the sheet conveyed by the sheet conveyance unit to shift in the width direction based on a result detected by the detection unit while the sheet is being conveyed by the transfer unit. ### Claim 2 (depends on 1) The sheet conveyance apparatus according to claim 1, wherein, if the detection unit detects that a position of the sheet being conveyed deviates from a normal position, the control unit causes the sheet conveyed by the sheet conveyance unit to shift in the width direction so as to compensate the deviation. ### Claim 3 (depends on 2) The sheet conveyance apparatus according to claim 2, wherein the control unit causes the sheet conveyed by the sheet conveyance unit to shift in a direction opposite to a direction of the deviation by an amount of the deviation. ### Claim 4 (depends on 1) The sheet conveyance apparatus according to claim 1, wherein the control unit causes the sheet conveyed by the sheet conveyance unit to shift in the width direction based on the result detected by the detection unit before a leading end of the sheet conveyed by the sheet conveyance unit reaches the transfer unit. ### Claim 5 (depends on 1) The sheet conveyance apparatus according to claim 1, wherein the detection unit is disposed downstream of the sheet conveyance unit and upstream of the transfer unit. ### Claim 6 (depends on 1) The sheet conveyance apparatus according to claim 1, wherein the sheet conveyance unit includes a registration roller pair. ### Claim 7 (depends on 1) The sheet conveyance apparatus according to claim 1, wherein the shifting unit includes a width direction shifting unit for shifting the sheet conveyance unit in the width direction. ### Claim 8 (depends on 1) The sheet conveyance apparatus according to claim 1, wherein the shifting unit includes a swivel unit for swiveling the sheet conveyance unit. ### Claim 9 A sheet conveyance apparatus comprising: a sheet conveyance unit configured to convey a sheet; a transfer unit disposed downstream of the sheet conveyance unit and configured to transfer a toner image onto the sheet; a shifting unit configured to shift the sheet conveyed by the sheet conveyance unit in a width direction by shifting the sheet conveyance unit; a first detection unit configured to detect a position of the sheet in the width direction while the sheet is conveyed by the sheet conveyance unit; a second detection unit disposed downstream of the first detection unit and configured to detect the position of the sheet in the width direction; and a control unit configured to control the shifting unit, wherein the control unit causes the sheet conveyed by the sheet conveyance unit to shift in the width direction based on a result detected by the first detection unit before a leading end of the sheet conveyed by the sheet conveyance unit reaches the transfer unit, and the control unit causes the sheet conveyed by the sheet conveyance unit to shift in the width direction according to a result detected by the second detection unit while the sheet is being conveyed by the transfer unit. ### Claim 10 A sheet conveyance apparatus comprising: a sheet conveyance unit configured to convey a sheet; a transfer unit disposed downstream of the sheet conveyance unit and configured to transfer a toner image onto the sheet; a width direction shifting unit configured to shift the sheet conveyed by the sheet conveyance unit in a width direction by shifting the sheet conveyance unit in the width direction; a detection unit configured to detect a position of the sheet in the width direction while the sheet is conveyed by the sheet conveyance unit; and a control unit configured to control the width direction shifting unit, wherein the control unit causes the sheet conveyance unit to shift in the width direction based on a result detected by the detection unit before a leading end of the sheet conveyed by the sheet conveyance unit reaches the transfer unit, and the control unit causes the sheet conveyance unit to shift in the width direction according to the result detected by the detection unit while the sheet is being conveyed by the transfer unit. ### Claim 11 (depends on 10) The sheet conveyance apparatus according to claim 10, wherein, if the detection unit detects that a position of the sheet being conveyed deviates from a normal position, the control unit causes the sheet conveyance unit to shift in the width direction so as to compensate the deviation. ### Claim 12 (depends on 11) The sheet conveyance apparatus according to claim 11, wherein the control unit causes the sheet conveyance unit to shift in a direction opposite to a direction of the deviation by an amount of the deviation. ### Claim 13 (depends on 10) The sheet conveyance apparatus according to claim 10, wherein the detection unit is disposed downstream of the sheet conveyance unit and upstream of the transfer unit. ### Claim 14 (depends on 10) The sheet conveyance apparatus according to claim 10, wherein the sheet conveyance unit includes a registration roller pair. ### Claim 15 (depends on 10) The sheet conveyance apparatus according to claim 10, wherein, before the width direction shifting unit shifts the sheet conveyance unit, the sheet conveyance apparatus forms a loop in the sheet in a region between the transfer unit and the sheet conveyance unit. ### Claim 16 (depends on 10) The sheet conveyance apparatus according to claim 10, further comprising a fixing unit disposed downstream of the transfer unit.