Convex portions formed on a sheet of paper by a forming section are maintained in a favorable condition and good recording quality is obtained.

Convex portions formed on a sheet of paper by a forming section are maintained in a favorable condition and good recording quality is obtained.

A decurling device includes a first conveyance path, a second conveyance path, a first switch, a decurler, and a controller. A sheet is conveyed along the first conveyance path or the second conveyance path. The first switch switches a route of conveyance of the sheet to the first conveyance path or the second conveyance path. The sheet has a first main surface and a second main surface. The decurler is located in the second conveyance path. The decurler corrects curl of the sheet. In a situation in which a weight per unit area of the sheet is smaller than a first threshold value, the controller controls the first switch such that the sheet is conveyed along the second conveyance path.

A decurling device includes a first conveyance path, a second conveyance path, a first switch, a decurler, and a controller. A sheet is conveyed along the first conveyance path or the second conveyance path. The first switch switches a route of conveyance of the sheet to the first conveyance path or the second conveyance path. The sheet has a first main surface and a second main surface. The decurler is located in the second conveyance path. The decurler corrects curl of the sheet. In a situation in which a weight per unit area of the sheet is smaller than a first threshold value, the controller controls the first switch such that the sheet is conveyed along the second conveyance path.

An image forming apparatus, including: an image forming portion configured to form an image on a sheet; a pair of conveyance rotary members arranged downstream of the image forming portion in a sheet conveyance direction and configured to convey the sheet, on which the image is formed, by a conveyance nip; and a guide portion configured to guide the sheet to the conveyance nip, the guide portion including: a first guide member formed into a sheet shape and having a first stiffness and an abutment surface configured to abut the sheet; and a second guide member formed into a sheet shape and having a second stiffness higher than the first stiffness and arranged on a side opposite to the abutment surface of the first guide member, wherein a downstream edge of the first guide member is closer to the conveyance nip than a downstream edge of the second guide member.

An image forming apparatus, including: an image forming portion configured to form an image on a sheet; a pair of conveyance rotary members arranged downstream of the image forming portion in a sheet conveyance direction and configured to convey the sheet, on which the image is formed, by a conveyance nip; and a guide portion configured to guide the sheet to the conveyance nip, the guide portion including: a first guide member formed into a sheet shape and having a first stiffness and an abutment surface configured to abut the sheet; and a second guide member formed into a sheet shape and having a second stiffness higher than the first stiffness and arranged on a side opposite to the abutment surface of the first guide member, wherein a downstream edge of the first guide member is closer to the conveyance nip than a downstream edge of the second guide member.

A medium discharging device includes a discharge roller pair that discharges a medium, a discharge tray disposed below the discharge roller pair in a vertical direction and having a placement surface on which the discharged medium is placed, and a guide member that is advanced and retracted between an advanced position where the guide member is advanced inward in a width direction from opposite sides in the width direction intersecting a discharge direction of the medium and a retracted position where the guide member is retracted to an end portion position side in the width direction. When the guide member is disposed at the advanced position, an upstream side end portion of the guide member in the discharge direction is disposed between a discharge position by the discharge roller pair and a position of the placement surface of the discharge tray, in the vertical direction.

A liquid ejection apparatus, including: a conveyor; and an ejector to eject a liquid; wherein each of an upstream roller pair, a first downstream roller pair, and a second downstream roller pair of the conveyor includes upper and lower rollers to respectively contact front and back surfaces of a recording medium, at least one of the upper and lower rollers being configured to give a conveyance force to the recording medium, wherein a rotation speed of the second downstream roller pair is higher than that of the first downstream roller pair, and the conveyance force of the first downstream roller pair is larger than that of the second downstream roller pair, and wherein the conveyance force of the second downstream roller pair is largest at a position thereof in the first direction which is nearest to the central position of the second downstream roller pair.

A liquid ejection apparatus, including: a conveyor; and an ejector to eject a liquid; wherein each of an upstream roller pair, a first downstream roller pair, and a second downstream roller pair of the conveyor includes upper and lower rollers to respectively contact front and back surfaces of a recording medium, at least one of the upper and lower rollers being configured to give a conveyance force to the recording medium, wherein a rotation speed of the second downstream roller pair is higher than that of the first downstream roller pair, and the conveyance force of the first downstream roller pair is larger than that of the second downstream roller pair, and wherein the conveyance force of the second downstream roller pair is largest at a position thereof in the first direction which is nearest to the central position of the second downstream roller pair.

Provided is a sheet transport mechanism disposed between a feeding mechanism feeding out a sheet and an acceptance mechanism receiving the sheet. The sheet transport mechanism includes: a transport unit that transports the sheet; and a plurality of curl correction units each including a contact unit which comes into contact with the sheet that is transported by the transport unit. The plurality of curl correction units is disposed at positions different from each other on a transport route of the transport unit, respectively.