Abstract: In case of both sides printing, the sheet S having an image formed on the obverse surface is conveyed to the first reversal section of the reversal device 50 disposed in a reversal path R3. In the first reversal section, the sheet S is conveyed to a U-turn reversal path by the reversal roller 56 with the first side section of the sheet S as the leading edge section. In the U-turn reversal path, a position of the first side surface section and a position of the second side surface section of the sheet S are exchanged and the sheet S is conveyed to the second reversal section. In the second reversal section, the sheet having been turned over is fed again to the register rollers 16 with a leading edge section at image forming on the obverse surface as the leading edge side. Whereby the same edge of the sheet S contacts with the register rollers 16 when the image is formed on the obverse side and when the image is formed on the reverse side.

Abstract: An image forming apparatus includes a housing formed with a discharge port, a printing device mounted in the housing, a discharge reverse unit to reversely move paper passing through the printing device, and a discharge unit to convey the paper, moving reversely by the discharge reverse unit, to the discharge port. The discharge reverse unit includes a guide member to guide the paper passing through the printing device to the discharge unit, and a lifting part to lift the guide member up and down. The image forming apparatus can prevent jams in a paper discharge device even when increasing a discharge speed in a discharge path, through which a printed printing medium is discharged in such a state that a printed surface of the printing medium is directed in a down direction.

Abstract: There are provided a sheet processing apparatus and an image forming apparatus which can adjust adhesive strength by a simple configuration. A toner image for adhesive strength adjustment is formed on a toner image of a sheet to be bonded by an image forming portion provided in a copying machine body. An adhesive is applied onto a bonding portion of the sheet by a gluing device provided in a finisher. The bonding portion of the sheet onto which the adhesive is applied and the toner image having the toner image for adhesive strength adjustment of the sheet are bonded together by a second pushing-out member and a pair of second folding rollers provided in the finisher. The amount of toner forming the toner image for adhesive strength adjustment formed by the image forming portion is adjusted to adjust the adhesive strength of the adhesive.

Abstract: In an image forming system equipped with a small-sized post-processing apparatus capable of producing pamphlets without being limited in terms of the number of sets, a folding device, an interposing device and an ejecting device for ejecting a pamphlet formed by interposing a sheet into a sheet to be folded are provided in the post-processing apparatus.

Abstract: A disclosed image forming apparatus includes a main conveyance path configured to convey a recording medium from a paper feeding unit to a sheet discharge unit; a double-side reversing conveyance path configured to switch back a recording medium, one side of which has an image formed, so as to reverse the sides of the recording medium for double-sided image formation; a sheet resending conveyance path configured to resend the recording medium reversed in the double-side reversing conveyance path to the main conveyance path; and a double-side reversing open-space unit configured to provide a space for switching back the recording medium on the double-side reversing conveyance path. The double-side reversing open-space unit also serves as a temporary tray for storing misfed recording media and remaining recording media left inside the image forming apparatus when a jam occurs.

Abstract: A toner image formed on an image bearing member is transferred onto a recording material so as to overflow from an edge portion of the recording material, thereby enabling the toner image to be formed so as to extend to the edge portion of the recording material. To suppress the deposition of the toner in the edge portion of the recording material, a cleaning member for cleaning the edge portion of the recording material obtained after the fixing is provided. In order to make a trailing edge of the recording material come into contact with the cleaning member, the recording material which has passed through a fixing apparatus is temporarily switched back, thereby allowing the trailing edge portion of the recording material to collide with the cleaning member.

Abstract: An image-forming device includes: an image-forming unit; a sheet discharge unit; a sheet support unit; and a reading unit. The image-forming unit forms images on a recording sheet. The sheet discharge unit discharges, in a sheet discharging direction, a recording sheet formed with an image by the image-forming unit. The sheet support unit is disposed above the image-forming unit, and supports sheet discharged from the sheet discharge unit. The reading unit is disposed above the sheet support unit, with an underside surface of the reading unit opposing a top surface of the sheet support unit. The sheet discharge unit is configured to discharge the sheet diagonally upwardly so that sheet discharged by the sheet discharge unit contacts the underside surface of the reading unit.

Abstract: A printing system comprises a paper path architecture for parallel printing using multiple marking engines. The media path configuration enables all the media feed trays to be located in one place, relative to the marking engines. A cross-over module is located between marking engines. The cross-over module can interleave media sheets that are being transported away from a first marking engine with the sheets being transported to the second marking engine. The cross-over module also includes a straight through path that enables media sheets to be transported directly to a finishing device without going through either marking engine. The marking engines include internal duplex loops such that media can be supplied to each engine in alternate groups. A merge module selectively merges the media which can then be further processed in a finishing transition module prior to communication to a finishing device.

Abstract: An image forming apparatus includes a first and a second image forming sections, a paper feeding section, and a paper output section. The image forming sections form an image on paper independently. The apparatus is laterally dividable into a first and a second portions where the first and second image forming sections are respectively positioned. The feeding section is arranged below the first image forming section in the first portion. The output section is arranged above the second image forming section in the second portion. The apparatus has two simple transport paths that run vertically through the image forming sections, respectively, without intersecting each other and detouring around the second or first image forming section.

Abstract: A main body control part of an image forming device switches select signals to a unicast mode by a communication mode switching part at least when stopping a recording paper that is being transported on a paper feeding path or when transporting a recording paper stopped on the paper feeding path, and switches the select signals to the broadcast mode after transmitting control data. Each of the paper feeding control parts executes a paper feeding control based on the control data received with the unicast mode, upon detecting the broadcast mode.

Abstract: A sheet size detecting apparatus having a first arm moved by a moving sheet contacting therewith, a second arm moved by the moving sheet contacting therewith, the second arm being disposed at a location differing from that of the first arm in a direction orthogonal to the movement direction of the sheet, and a sensor, wherein the output level of the sensor when only one of the first arm and the second arm has been moved is the same as the output level thereof when neither of the first arm and the second arm is moved, and the output level of the sensor when both of the first arm and the second arm have been moved differs from the output level thereof when neither of the first arm and the second arm is not moved. Thereby, the cost can be suppressed and yet, the wrong detection of the sheet size can be prevented.

Abstract: When a toner image larger than a recording material is formed on an image bearing member, and the toner image is transferred onto the recording material as widely as possible to form an image without margins, a toner in a vicinity of an end portion of the recording material adheres to the recording material while remaining unfixed. In order to suppress the adhesion of the toner to the end portion of the recording material, the recording material is passed through a cleaning unit for the end portion of the recording material after fixation. In the cleaning unit, the recording material is sent askew. By being conveyed while an edge of the end portion of the recording material is rubbed against a cleaning member, the recording material becomes less subject to the adhesion of the toner at the end portion thereof.

Abstract: An image forming apparatus capable of properly discharging a medium has a first medium stacking unit, a second medium stacking unit, and a guiding member for guiding the medium to the second medium stacking unit in a case that the second medium stacking unit is set in an opened state and guiding the medium to the first medium stacking unit in a case that the second medium stacking unit is set in a closed state. Since the guiding member guides the medium to the second medium stacking unit in a case that the second medium stacking unit is set in the opened state and guides medium to the first medium stacking unit in a case that the second medium stacking unit is set in the closed state, the medium can be discharged to the second medium stacking unit in a case that large normal curling occurs.

Abstract: An image forming apparatus may include a printer to fix images on paper sheets that travel along a first paper path and a second paper path, and first and second doors that may be open to uncover the first and second paper paths, respectively. First and second sensors may detect if the respective doors are open and first and second jam detectors may detect jams along the respective paper paths. A memory may store first and second jam removal guidance for the jams along the respective paper paths. A controller may cause a display to switch from displaying the first jam removal guidance read from the memory to displaying the second jam removal guidance read from the memory upon the second door sensor detecting the second door is open.

Abstract: An image forming apparatus having a sheet support is described. Using one or more configurations, the number of parts for the sheet support may be reduced.

Abstract: A sheet folding apparatus includes a fan folding unit that fan folds a folded-back sheet into a width or length of the regular size to file the sheet in the regular-size folder such that the sheet forms layers along a traveling direction of the sheet; first and second punching units that punch the filing hole in the sheet fan folded, respectively, into the width and the length of the regular size at the portion to be punched to file the sheet in the regular-size folder; and a sheet-processing setting unit that sets a fold mode of the fan fold and selects one of the first punching unit and the second punching unit for use in punching of the filing hole in the sheet based on a size and orientation of the delivered sheet.

Abstract: A color laser printer includes a belt conveying device having a conveyor belt for conveying a recording medium, an image forming unit that forms an image on the recording medium and a test pattern in a test-pattern area on a conveying surface of the conveyor belt, and a pressing member having a pressing surface that grows wider toward a downstream side with respect to a conveying direction in which the recording medium is conveyed and that presses the recording medium toward the conveying surface of the conveyor belt. The pressing member is disposed so that a prescribed gap is formed between the pressing surface of the pressing member and the test-pattern area on the conveying surface of the conveyor belt.

Abstract: An image forming system executes image forming with pages kept continuous by controlling supplying of sheets corresponding to pages for which sheets have not fed in consideration of pages for which sheets have already been fed, even if image forming processing is temporally suspended.

Abstract: The image forming apparatus is provided with: a carrier that carries a toner image; a transporting unit that transports a sheet with using a transporting route; a transfer unit that transfers the toner image carried by the carrier to the sheet transported by the transporting unit; a fixing unit that fixes the toner image transferred by the transfer unit on the sheet; and an exit opening that is disposed so that a transfer position of the transfer unit is located between the exit opening and a fixation position of the fixing unit in a section including a transporting route over the entire length and that discharges the sheet on which the toner image is fixed by the fixing unit to an outside of the apparatus.

Abstract: To remove also VOC gas generated from the discharged sheets, an image forming apparatus comprises an image forming unit which forms an image on a sheet; a tray on which sheets on which images are formed by the image forming unit are stacked; a suction device which sucks air from the surrounding space of sheets stacked up on the tray; and a VOC removing unit which removes VOC contained in the air sucked by the sucking device.