Patent ID: 8463173
Filing Date: 2013-06-11
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image forming unit that forms an image on a sheet; a first sheet discharging path, which discharges a sheet passed through the image forming unit, and which has a first dischargeable minimum sheet length; a second sheet discharging path, which discharges the sheet passed through the image forming unit, and which has a second dischargeable minimum sheet length, the second dischargeable minimum sheet length being shorter than the first dischargeable minimum sheet length; a measuring unit that measures a length of the sheet conveyed to the image forming unit; a control unit, a conveying roller that adjusts a timing of conveying the sheet to the image forming unit; a sensor, which detects a passage of the sheet, and which is positioned upstream in the sheet conveying direction from the image forming unit and downstream from the conveying roller, a feed roller that feeds the sheet; a second sensor, which detects the passage of the sheet, and which is positioned upstream in the sheet conveying direction from the conveying roller and downstream from the feed roller; and a second measuring unit that measures the sheet length using the second sensor, wherein the measuring unit measures the length of the sheet based on a detection result of the sensor, wherein, when the length of the sheet measured by the measuring unit is shorter than the first dischargeable minimum sheet length in a state in which the first sheet discharging path is selected, the control unit is configured to: wherein, when the length of the sheet measured by the second measuring unit is shorter than the first dischargeable minimum sheet length, the control unit suspends the conveyance of the subsequent sheet at least until the measuring unit completes the measurement of the sheet.