Two-sided image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasahiro Takahashi, Takayuki Kato
Life of this patent
Estimating the term…
Abstract
An image forming apparatus including an image forming device for forming an image on a sheet, a re-conveying path for re-conveying the sheet on one side of which the image has been formed to the image forming device for forming an image on the other side of the sheet and a sheet containing portion for feeding the sheet to a conveying path interflowing into the middle of the re-conveying path, wherein, when the sheet on one side of which the image has been formed is once stopped and waited in the re-conveying path, a leading end of the sheet is positioned downstream of the interflowing position.
Claims9
An image forming apparatus comprising:
- image forming means for forming an image on a sheet;
- a re-conveying path for re-conveying the sheet on one side of which the image has been formed to said image forming means for forming an image on the other side of the sheet;
- and
- a sheet containing portion for feeding the sheet to a conveying path interflowing into a middle of said re-conveying path,
- wherein, when the sheet on one side of which the image has been formed is once stopped and temporarily held in said re-conveying path, a leading end of the sheet on one side of which the image has been formed and which has been once stopped and temporarily held is positioned downstream of an interflowing position, and
- wherein a new sheet fed from said sheet containing portion is conveyed from the conveying path through said re-conveying path to pass the stopped and temporarily held sheet.
An image forming apparatus comprising:
- image forming means for forming an image on a sheet;
- a re-conveying path for re-conveying the sheet on one side of which the image has been formed to said image forming means for forming an image on the other side of the sheet;
- a sheet containing portion for feeding the sheet to a conveying path interflowing into a middle of said re-conveying path;
- a surface reverse conveying path provided upstream of said re-conveying path for reversing a front and a back surfaces of the sheet on one side of which the image has been formed;
- an arc-shaped conveying path connecting said surface reverse conveying path and said re-conveying path;
- and
- a conveying roller of which an external periphery serves as an inner diameter side surface of said arc-shaped conveying path,
- wherein, when the sheet on one side of which the image has been formed is once stopped and temporarily held in said re-conveying path, a leading end of the sheet on one side of which the image has been formed and which has been once stopped and temporarily held is positioned downstream of an interflowing position.
An image forming apparatus comprising:
- image forming means for forming an image on a sheet;
- a re-conveying path for re-conveying the sheet on one side of which the image has been formed to said image forming means for forming an image on the other side of the sheet;
- a sheet containing portion for feeding the sheet to a conveying path interflowing into a middle of said re-conveying path;
- and
- a surface reverse conveying path for reversing a front and a back surfaces of the sheet above said re-conveying path, said surface reverse conveying path and said re-conveying path overlapping each other, wherein said re-conveying path and said surface reverse conveying path communicate with each other through a large-diameter roller,
- wherein, when the sheet on one side of which the image has been formed is once stopped and temporarily held in said re-conveying path, a leading end of the sheet on one side of which the image has been formed and which has been once stopped and temporarily held is positioned downstream of an interflowing position.
Dependencies are inferred from the claim text.