Image forming apparatus

An image forming apparatus comprising:

• a sheet feed portion configured to feed a sheet;
• an image forming portion configured to form an image on the sheet;
• a first conveying path configured to guide the sheet fed by the sheet feed portion to the image forming portion;
• a second conveying path configured to guide the sheet on which the image has been formed on one surface thereof by the image forming portion again to the first conveying path;
• a document feed portion configured to feed a document to the second conveying path;
• an image reading portion configured to read an image of the document fed by the document feed portion;
• and
• a control portion configured to control a conveyance operation of the sheet and the document,
• wherein the control portion configured to execute a mode in which a (x)th sheet passes through the second conveying path after a (n)th document, where (x) and (n) are arbitrary natural numbers, has passed through the second conveying path and before a (n+1)th document passes through the second conveying path in a case where an operation of forming images respectively on both surfaces for a plurality of sheets and an operation of reading images for a plurality of documents are executed in series.

An image forming apparatus comprising:

• an image forming unit configured to form an image on a sheet;
• a first stacking portion on which the sheet is stacked;
• a first feeding unit configured to feed the sheet stacked on the first stacking portion to the image forming unit;
• a first discharge unit configured to discharge the sheet on which the image is formed by the image forming unit;
• an image reading unit configured to read an image of the document;
• a second stacking portion on which the document is stacked;
• a second feeding unit configured to feed the document stacked on the second stacking portion to the image reading unit;
• a second discharge unit configured to discharge the document from which the image is read by the image reading unit;
• and
• a control portion configured to control a conveyance operation of the sheet and the document,
• wherein a conveying path through which the sheet is passed in a case of forming images on both surfaces of the sheet and a conveying path through which the document which is fed by the second feeding unit and discharged from the second discharge unit is passed are partly common on a common conveying path, and
• wherein the control portion configured to execute a mode in which a (x)th sheet passes through the common conveying path after a (n)th document, where (x) and (n) are arbitrary natural numbers, has passed through the common conveying path and before a (n+1)th document passes through the common conveying path in a case where an operation of forming the images respectively on the both surfaces for a plurality of sheets and an operation of reading images for a plurality of documents are executed in series.

An image forming apparatus comprising:

• an image forming unit configured to form an image on a sheet;
• a first stacking portion on which the sheet is stacked;
• a first feeding unit configured to feed the sheet stacked on the first stacking portion to the image forming unit;
• a first discharge unit configured to discharge the sheet on which the image is formed by the image forming unit;
• an image reading unit configured to read an image of the document;
• a second stacking portion on which the document is stacked;
• a second feeding unit configured to feed the document stacked on the second stacking portion to the image reading unit;
• a second discharge unit configured to discharge the document from which the image is read by the image reading unit;
• and
• a control portion configured to control a conveyance operation of the sheet and the document,
• wherein a conveying path through which the sheet is passed in a case of forming images on both surfaces of the sheet and a conveying path through which the document which is fed by the second feeding unit and discharged from the second discharge unit is passed are partly common on a common conveying path, and
• wherein the control portion configured to execute a mode in which a (x)th document passes through the common conveying path after a (n)th sheet, where (x) and (n) are arbitrary natural numbers, has passed through the common conveying path and before a (n+1)th sheet passes through the common conveying path in a case where an operation of forming the images respectively on the both surfaces for a plurality of sheets and an operation of reading images for a plurality of documents are executed in series.