Patent ID: 7192022

Claim:
An apparatus for reversing a sheet conveyed along conveyance paths, said apparatus comprising: a first conveyance path having a first entrance at a first end thereof and a first exit at a second end thereof, said first conveyance path conveying a sheet to be reversed and which is fed into said first entrance; a second conveyance path having a second entrance at a first end thereof and a second exit at a second end thereof, said second conveyance path conveying a sheet not to be reversed and which is fed into said second entrance; a common path communicating at a first end thereof with said first exit of said first conveyance path and communicating at a second end thereof with said second exit of said second conveyance path; a merging path communicating with said first end of said common path; a first reversing roller having a part thereof positioned in said common path; a second reversing roller having a part thereof positioned in said common path, said second reversing roller being opposed to said first reversing roller and pressed against said first reversing roller, thereby transferring a sheet in said common path between said first and second reversing rollers; first rotating means for rotating a first rotational shaft in a first direction, said first rotational shaft extending integrally from said first reversing roller; second rotating means for rotating a second rotational shaft in the first direction, the same direction as said first rotational shaft is rotated, said second rotational shaft extending integrally from said second reversing roller; a first electromagnetic clutch coupling said first rotational shaft to said first rotating means; a second electromagnetic clutch coupling said second rotational shaft to said second rotating means; and, control means for effecting on-off control of said first and second electromagnetic clutches, so that, when feeding a sheet from said first conveyance path into said common path, said first electromagnetic clutch is on and said second electromagnetic clutch is off, when feeding a sheet from said second conveyance path into said common path, said first electromagnetic clutch is off and said second electromagnetic clutch is on, and when feeding a sheet from said common path into said merging path, said first electromagnetic clutch is off and said second electromagnetic clutch is on.