Abstract: An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.

Abstract: An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.

Abstract: An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.

Abstract: An image forming apparatus for forming an image on a sheet includes an image forming unit, a first pair of rollers, a second pair of rollers, and a holder. The image forming unit is configured to form an image on a sheet. The first pair of rollers is configured to discharge the sheet out of the apparatus, the image having been formed on a first surface of the sheet by the image forming unit. The second pair of rollers is configured to convey the sheet again to the image forming unit to form an image on a second surface of the sheet opposite to the first surface. The holder is configured to hold one of the first pair of rollers and one of the second pair of rollers.

Abstract: An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.

Abstract: An image forming apparatus for forming an image on a sheet includes an image forming unit, a first pair of rollers, a second pair of rollers, and a holder. The image forming unit is configured to form an image on a sheet. The first pair of rollers is configured to discharge the sheet out of the apparatus, the image having been formed on a first surface of the sheet by the image forming unit. The second pair of rollers is configured to convey the sheet again to the image forming unit to form an image on a second surface of the sheet opposite to the first surface. The holder is configured to hold one of the first pair of rollers and one of the second pair of rollers.

Abstract: An image forming apparatus heats and fixes a toner image on a recording material, discharges and cools the recording material, and prevents the heated and fixed toner image on the recording material from being melted. The apparatus also has a conveying portion that is prevented from being cooled, so that unevenness of cooling of the toner image is prevented, and the image forming apparatus does not cause any contact mark of the conveying portion.

Abstract: The present invention provides a sheet feeder, including: a support member which can be rotated around a pivot at upstream side thereof in a sheet feeding direction and supports sheets; a driving unit rotating the support member upwardly; a feeding portion feeding the sheets; a first detection unit detecting the sheets on the support member at a first detection position above the support member; a second detection unit detecting the sheets on the support member at a second detection position located at upstream of the first detection position and below the first detection position; and a stacking amount determining portion determining a stacking amount of the sheets on the support member, based on a period of time between a time when the second detection unit detects the sheets and a time when the first detection unit detects the sheets while the support member is upwardly rotated by the driving unit.

Abstract: With the present invention, an image forming apparatus is prevented in which a recording material on which a toner image is heated and fixed and which is discharged is cooled, and the toner image heated and fixed onto the recording material is prevented from being melted. Further, a conveying portion is prevented from being cooled, so that unevenness of cooling of the toner image is prevented, and the image forming apparatus does not cause any contact mark of the conveying portion. An air-blowing duct is provided to guide external air to the recording material conveyed by a discharge roller and a discharge driven roller provided at a downstream side of a fixing device, and a blowing port of the air-blowing duct is open at a position avoiding the discharge roller and the discharge driven roller.