An intermediate unit includes a transportation path provided with a drying unit that accelerates the drying of the medium. The transportation path includes an inlet path, an outlet path, a first branch path, a second branch path, a first junction path, a second junction path, a switch-back type inversion path with a first inversion path and a second inversion path. The first branch path and the second branch path which branch off at a branch point from the inlet path. The first junction path and the second junction path and the outlet path join each other at a junction point. The first branch path and the first junction path and the first inversion path join each other at a first connection point. The second branch path and the second junction path and the second inversion path join each other at a second connection point.

An image forming apparatus includes an apparatus main body to which a cartridge is detachably attached. The apparatus main body includes a frame having an opening portion through which the cartridge is attached to the apparatus main body; an opening and closing member supported by the frame rotatably between an open position in which the opening portion is exposed and a closed position in which the opening portion is covered with the opening and closing member and having a stacking surface on which a sheet is to be stacked; a discharging roller discharging the sheet in a discharging direction onto the stacking surface; and a regulating wall which is movably attached to the opening and closing member and extends from the stacking surface toward the discharging roller in a direction intersecting the discharging direction to regulate an upstream edge of the sheet in the discharging direction.

In an image forming apparatus, a control device functions as a controller and a user presence/absence determiner. When accepting an instruction to execute a print job through a touch panel, the controller controls operations of a sheet feed device, a conveyance device, and an image forming device to allow a document image represented by image data generated by a document reading device to be formed on a sheet to make a printed matter and allow the printed matter to be discharged to a sheet output tray. When the user presence/absence determiner determines that a user is present, the controller controls, before printing for at least a last sheet in the print job, the operations of the sheet feed device and the conveyance device to allow a sheet to be discharged to the sheet output tray without allowing the image forming device to form the document image on the sheet.

An image forming method includes supplying powder having metallic luster on a resin image arranged on a recording medium, wherein a color value of the resin image and a color value of the powder on the recording medium satisfy the following Equation (1):
{(L*.sub.p−L*.sub.i−40).sup.2+(a*.sub.p−a*.sub.i).sup.2+(b*.sub.p−b*.sub.i).sup.2}.sup.1/2≤20  (1)
wherein
L*.sub.p, a*.sub.p, and b*.sub.p represent color values of the powder, and
L*.sub.i, a*.sub.i, and b*.sub.i represent color values of the resin image on the recording medium.

A detection device includes a first detection unit that detects a leading edge portion and a trailing edge portion of a medium before the medium is heated, and a second detection unit that differs from the first detection unit and that detects the leading edge portion and the trailing edge portion of the medium after the medium is heated.

A detection device includes a transport passage along which a medium is transported and a detection unit that detects a leading edge portion and a trailing edge portion of the medium in the transport passage while transportation of the medium is stopped and while the medium is pulled in a pulling direction along the transport passage.

An image forming system includes: an image forming apparatus configured to form an image on a recording medium; a post-processing apparatus configured to perform post-processing on the recording medium on which an image is formed by the image forming apparatus; a relay apparatus having a function of changing a transport speed of the recording medium on which an image is formed by the image forming apparatus to a transport speed of the post-processing apparatus and transporting the recording medium to a subsequent stage; and a charge eliminating apparatus configured to perform charge elimination on the recording medium that is charged, by reducing a charge amount of the charged recording medium, and the charge eliminating apparatus is provided at a stage that is after the relay apparatus and before the post-processing apparatus.

A sheet processing apparatus includes a conveyance unit configured to convey a sheet, a stacking portion on which the sheet conveyed by the conveyance unit is stacked, a first regulation member configured to regulate a position of an edge portion, in a conveyance direction, of the sheet stacked on the stacking portion, a second regulation member configured to regulate a position of an edge portion, in a width direction orthogonal to the conveyance direction, of the sheet stacked on the stacking portion, a binding unit supported movably in the conveyance direction and configured to perform a binding process of binding the sheet stacked on the stacking portion, and a moving unit configured to move the second regulation member in the conveyance direction accompanied with a movement, in the conveyance direction, of the binding unit.

The conveyance guide unit is provided with a guide member, a supporting frame, and an external cover. The guide member guides a sheet, which is discharged from a sheet discharge port of the image forming apparatus or from a sheet discharge port of a relay conveyance device installed in the image forming apparatus, to the sheet carrying-in port of a post-processing device. The supporting frame supports the guide member. The external cover is fixed to the supporting frame; the external cover covers an upper part of the guide member and side parts of the guide member in a traverse direction of a sheet conveyance path, which is perpendicular to a sheet conveyance direction. The external cover has an upper surface serving as an extension part of a discharge tray part of the post-processing device, the extension part being extended downstream, in a sheet discharge direction.

According to examples, an apparatus may include a media feed mechanism, printing components, an output tray, a sensor, a processor, and a memory on which is stored machine-readable instructions. The instructions may cause the processor to receive a signal from the sensor corresponding to a detection by the sensor of a movement that triggers output of the signal from the sensor. The instructions may also, based on receipt of the signal, cause the media feed mechanism to feed a sheet of media out of the apparatus into the output tray.