Fujifilm Business Innovation Corp.

Fuji Xerox Co., Ltd.

Yuta Chino

Hiroyuki Suzuki

Naohito Otsuki

Takehiko Koizumi

Kiyoshi Watanabe

Toshitaka Tanaka

Tatsuya Yamashita

Junji Hagihara

Chihiro Iijima

An image forming apparatus includes: a fixing cylinder, having a groove formed in an outer portion thereof in a rotational radial direction thereof; a delivery cylinder; plural holding members configured to hold a recording medium when it passes around the delivery cylinder toward the fixing cylinder, and arranged in a length direction of a circulating member, each holding member being disposed in the groove when the holding member passes along the outer portion of the fixing cylinder; and a pressure unit applying a pressure to the recording medium as it passes between the pressure unit and the fixing cylinder, the pressure unit coming into contact with an end portion of the groove in a rotation direction of the fixing cylinder before or after a period during a holding operation when one of the holding members holds the recording medium.

Image forming apparatus having a pair of chains wound around a fixing roller and a transfer roller

A detection device includes: a transport unit that stops transportation of a medium on which a first image is formed, the transport unit restarting the transportation of the medium toward an image forming unit after the medium has been in a stopped state, the image forming unit forming a second image on the medium; and a detection unit that detects an edge portion of the medium while the medium is in the stopped state.

Detection device and image forming apparatus

An image forming apparatus includes plural rotating members that are rotatable; an annular circulating member that is wound around the plural rotating members and circulates when the rotating members rotate; a retaining member attached to an attaching portion of the circulating member and that circulates together with the circulating member, the retaining member being configured to retain a recording medium in an area where the attaching portion comes into contact with one of the rotating members; an image forming section that forms an image on the recording medium at an image forming position defined on a circulation path along which the circulating member circulates; a delivering unit that delivers the recording medium to a retaining position where the recording medium is to be retained by the retaining member; a detector that detects rotation of the one rotating member; and a controller that controls delivery of the recording medium from the delivering unit to the retaining position, the delivery being controlled with reference to information detected by the detector.

Image forming apparatus

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.

Detection device, image forming apparatus, and non-transitory computer readable medium

An image forming apparatus includes: a circulating member that is a part of a transport path that transports a recording medium; a holding member that is fixed to the circulating member, circulates, and holds a leading end portion of the recording medium; an image forming section that forms an image on the recording medium at an image forming position in a circulation path of the circulating member; and a feeding section that feeds out the recording medium to a holding position where the holding member holds the leading end portion of the recording medium. When a circulation velocity Vg is defined as a velocity at which the circulating member circulates the holding member, a transport velocity of the recording medium is reduced from a first transport velocity V, which is higher than the circulation velocity Vg, to a second transport velocity V, which is lower than the first transport velocity V, before the leading end portion of the recording medium enters the holding position.

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.

A sheet transport device includes a transport path along which a sheet is transported in one direction; a sheet butting portion provided at one side of the transport path; a sheet rotating section; and a sheet butting section. When a short sheet is transported along the transport path, the sheet rotating section rotates the short sheet such that a leading end is directed to the other side of the transport path, and when a long sheet is transported, the sheet rotating section rotates the long sheet such that an angle of inclination with respect to the one direction is reduced. The sheet butting section moves the short sheet rotated by the sheet rotating section toward the one side to make the side edge of the short sheet butt against the sheet butting portion, while allowing the long sheet to pass therethrough without moving the long sheet toward the one side.

Sheet transport device and image forming apparatus

A sheet conveying device includes: a conveyance path along which a sheet is conveyed; a plurality of butting target members that are arranged beside and alongside the conveyance path and against which a side edge of a sheet being conveyed along the conveyance path is caused to butt; and a butting device that causes the side edge of the sheet to butt against the butting target members by moving, toward the butting target members, the sheet being conveyed along the conveyance path using a plurality of sheet conveying structures that are deviated from each other in a sheet conveying direction, and two or more of the butting target members are located downstream of a sheet conveying structure that is located second in the upstream direction from a most downstream one among the plurality of sheet conveying structures.

Sheet conveying device and image forming apparatus

A sheet transport device includes a transport path along which a sheet is transported in one direction, the sheet being transported with a corner at a leading end of the sheet being located on a first lateral side of the path, a sheet rotating section that rotates the sheet so as to increase an angle of the sheet and so as to orient the leading end, a sheet moving section that moves the sheet toward the first lateral side, and plural sheet butting portions that are arranged side-by-side in the one direction, on the first lateral side, the sheet butting portions allowing the moved sheet to be butted thereagainst to orient the sheet in the one direction. When the sheet is butted against the sheet butting portions to be oriented in the one direction, the corner is located at a position where no sheet butting portions are provided.

A sheet transport device includes a transport path along which a sheet is transported in one direction; a sheet butting portion against which a side edge of the sheet on the transport path is butted, the sheet butting portion being provided at one side of the transport path; a butting section that moves the sheet toward the one side to butt the side edge against the sheet butting portion; and a sheet rotating section located on the upstream side of the butting section in a sheet transport direction, the sheet rotating section having two sheet transport parts provided so as to be shifted from each other in a direction intersecting the one direction, at least one of the sheet transport parts being configured to have a variable sheet transport speed, the sheet rotating section rotating the sheet by utilizing a difference in transport speed between the two sheet transport parts.

Growing community of inventors

Kanagawa, Japan

Yuta Chino