Abstract: A medium reversing apparatus, an image forming apparatus and an image reading apparatus that respectively have the medium reversing apparatus are supplied capable of avoiding medium damage and medium load abnormality. In the medium reversing apparatus that conveys a sheet-like medium back and reverses obverse side and reverse side of the medium, a medium ejection opening is used for ejecting at least a part of the medium; an ejecting member at least ejects the part of the medium from the medium ejection opening and conveys the medium back; and a bend forming section is set at the outside edge portion of the ejecting member and bends the medium from a clamp face of the medium clamped by the ejecting member.

Abstract: A skew correction device including a first guide member which supports the sheet transported from a lower side thereof in a vertical direction by the transport roller and which guides the sheet to the gate member and a second guide member which is provided on an upper position from the first guide member in a vertical direction and which guides the sheet to the gate member. Here, the second guide member includes at least one rotating member which faces a transport passage of the sheet interposed between the first guide member and the second guide member and is rotatably provided at least in the center of the second guide member in a width direction intersecting a transport direction of the sheet.

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 skew correction device including a first guide member which supports the sheet transported by the transport roller from a lower side thereof in a vertical direction and guides the sheet to the gate member, and a second guide member which is provided on an upper position from the first guide member in a vertical direction and which guides the sheet to the gate member. Here, the first guide member includes at least one rotating member which faces a transport passage of the sheet interposed between the first guide member and the second guide member and is rotatably provided at least in the center of the second guide member in a width direction intersecting a transport direction of the sheet.

Abstract: A device is provided for curling side edges of a sheet of media to be held down by a hold down system in an image production system. The device has a first shaped element having an outer section, the outer section of the first shaped element pointing in a first direction; a second shaped element having an outer section, the outer section of the second shaped element pointing in a second direction opposite the first direction; a first pinching element adjacent to the first shaped element, a first pathway being formed between the first pinching element and the first shaped element; and a second pinching element adjacent to the second shaped element, a second pathway being formed between the second pinching element and the second shaped element.

Abstract: A job separator has a first roller unit and a second roller unit adjacent to the first roller unit. The first roller unit has a first driven roller and a first drive roller, which receive and convey a sheet between them. The second roller unit has a second driven roller and a second drive roller, which also receive and convey a sheet between them. The second drive roller may selectively move between a first position, in which the second drive roller is below the second driven roller, and a second position in which the second drive roller is above the second driven roller. An image processing apparatus has the job separator, a recording unit, an output tray, and a control unit for controlling the second drive roller.

Abstract: A discharging unit for discharging a printing medium from an image forming apparatus includes an elastic roller and a curl preventing roller to oppose each other in a pressing relationship forming a nip therebetween to reduce curling of a print medium passing through the nip. At least one of the elastic roller and the curl preventing roller is allowed to move towards or away from the other roller so that the nip can be adjusted to accommodate different thicknesses of varying types of printing medium.

Abstract: Digital scanning of document sheets with a substantially vertical scanning system is provided by sequentially feeding the uppermost document from an upright input loading and image viewing area to a scanning head, and then to an output, along a sheet feeding path which is substantially linear, planar and vertical, but also somewhat rearwardly inclined, defined by a correspondingly rearwardly inclined document rear supporting surface and a substantially horizontal bottom edge supporting surface providing a lateral movement guide and at least initial gravitational registration and support of the bottom edges of the loaded documents. The scanned documents can be automatically ejected to stack in the collated order in which they were fed to be scanned by automatically deflecting them forwardly (outwardly) from their substantially vertical rearwardly inclined lateral movement path onto a forwardly inclined stacking area.

Abstract: A sheet discharging device and image forming apparatus are provided. The sheet discharging device includes a sheet discharging port; a sheet discharging tray which is provided correspondingly to the sheet discharging port, a sheet discharged from the sheet discharging port being stacked on the sheet discharging tray; and a plurality of sheet lifting members provided so as to be moveable between a retraction position and a protrusion position; wherein when a leading end portion of the sheet contacts with the sheet lifting members, the sheet lifting members move from the retraction position to the protrusion position, the sheet lifting members stay at the protrusion position and lift up the sheet while the sheet is discharged from the sheet discharging port to the sheet discharge tray, and the sheet lifting members return to the retraction position when the sheet has been discharged from the sheet discharging port.

Abstract: An equipment for conveying sheet-shaped members, including a plurality of blower ducts being arranged in parallel; a common duct connected to outlets of the blower ducts; an air stream unit for generating air streams in the blower ducts; a plurality of sheet feeding units respectively connected to the blower ducts, the sheet feeding units feeding sheet-shaped members into the blower ducts; a plurality of open/close valves respectively provided to the blower ducts, the open/close valves opening and closing the blower ducts; a drive section for respectively driving the open/close valves; a collecting unit provided to a terminal end of the common duct, the collecting unit collecting the sheet-shaped members conveyed; and a control section for controlling the drive section.

Abstract: A registration unit includes a skew correction roller pair configured to rotate a sheet conveyed from a conveyance roller pair and to correct skew of the sheet. The registration unit sheet further includes a projectable swinging guide arranged between the conveyance roller pair and the skew correction roller pair to deflect the sheet. The skew correction roller pair corrects the skew of the sheet deflected by the swinging guide.

Abstract: A sheet de-curling device: including a first de-curling roller, structured of a round axial shaft and a long bar-shaped member, wherein the long bar-shaped member is spiraled on the round axial shaft clockwise from a predetermined portion of a center of the round axial shaft toward a left end of the round axial shaft, and counterclockwise from the predetermined portion of the center of the round axial shaft toward a right end of the round axial shaft with the same spiraling pitch; a second de-curling roller, structured of a round axial shaft and a long bar-shaped member, wherein the long bar-shaped member is spiraled on the round axial shaft in opposite spiraling directions against the first de-curling roller; and a driving mechanism which rotates the paired first and second de-curling rollers.

Abstract: A card collection mechanism may include a card collection box for collecting a card, a feeding roller for carrying the card from a feeding passage to the card collection box, and a guide part for guiding the card to the card collection box. The guide part guides the card while the guide part causes the card to be resiliently bent in a direction where an urging force directed to a surface of the feeding roller is applied to the card when the card is fed to the card collection box, and the feeding roller carries the card to a state in which the card is capable of being collected in the card collection box. The card collection mechanism may be used in a card issuing device having a card issuing part.

Abstract: A device for stacking flat, flexible postal items in a stacking compartment in an upright position includes a stacking roller positionable in proximity of the stacking compartment. A covered belt system feeds the postal items consecutively to the stacking roller, wherein the belt system has a first belt and a second belt. A deflection roller on an axis deflects the first belt from the second belt so that the second belt continuous to transport a postal item to the stacking roller. A first profile roller on the deflection roller has a predetermined roller length and includes a number of diameter taperings over its roller length. Deflectable pressure means press the postal items into the diameter taperings of the first profile roller to reduce a free flexible lengths of a postal items.

Abstract: Curling of a printed sheet is corrected, friction is reduced on a paper transport surface, and the shape of the printed and ejected sheet is adjusted to a predetermined shape.

Abstract: Provided is a sheet delivery apparatus for delivering a sheet to a delivery tray, including: a pair of delivery rotary members for nipping and delivering the sheet guided by the guide portion; and a projection that rotates about an axis being the same as an axis of one of the pair of delivery rotary members, is abutted against a trailing end of the sheet, and pushes out the trailing end of the sheet toward a delivery tray side. The guide portion deforms the sheet so that the sheet does not contact the projection, and after the trailing end of the sheet has passed through the guide portion, the projection and the trailing end of the sheet are abutted against each other.

Abstract: A transport roller is provided in a transport path in order to transport paper, the transport roller transporting the paper downstream in the transport path by making contact with the paper, and At least one contact portion that makes contact with the paper is provided in the transport roller. The contact portion is deformable in a direction that releases pressing force received from the paper when transporting the paper.

Abstract: The apparatus 10 has a conveyor 12 which may be configured as a multiple tape conveyor and the working section 14 of which, which is driven in a conveying direction (F), forms a supporting face 16 for the printed products 18 which accumulate in an overlapping formation (S). An aligning plate 66 is situated on each side of the conveyor 12. The working section 14 of the conveyor can be deflected out of a conveying plane by means of a switching means 34, in order, in particular for the aligning of thin printed products 18 with few pages, to form a bend 62 in the products which reinforces them transversely with respect to the conveying direction (F) so that they can be laterally shifted into alignment by the aligning plates without damage.

Abstract: A feeding device including a drive roller and a driven roller opposed to the drive roller and biased toward the drive roller, such that the drive and driven rollers cooperate to feed a sheet while holding the sheet therebetween. The driven roller includes a toothed wheel portion and a contactable portion having a diameter smaller than that of the toothed wheel portion. The drive roller includes first and second portions. A radially outer end of the second portion is more distant from an axis of the drive roller than a radially outer end of the first portion. During absence of the sheet between the drive and driven rollers, the contactable portion of the driven roller is held in contact at its circumferential surface with a circumferential surface of the second portion of the drive roller, while a radially outer end of the toothed wheel portion is not in contact with a circumferential surface of the first portion. Also disclosed is an image recording apparatus including the above-described feeding device.

Abstract: An image forming apparatus comprising: an image forming section which forms an image on a sheet material; a curl correcting mechanism which interposes and conveys the sheet material on which the image has been formed by the image forming section. Pressure applied to one surface of the sheet material during an interposing operation and a conveying speed of the sheet material can be changed, the curl correcting mechanism changes the conveying speed from an initial speed vs to a target speed vo higher than the initial speed (vo>vs) while the sheet material is pressed, and the curl correcting mechanism changes the pressure to a high pressure in response to a change of the conveying speed, whereby a curl of the sheet material is reduced.

Abstract: An apparatus and method transport a sheet on a tray. In one embodiment, feet carried by an endless member contact a bottom and edge of the sheet to move the sheet off of the tray. In one embodiment, the sheet is arced while it is being engaged by the feet.

Abstract: The invention relates to a device and a method for collecting successively fed flat objects, in particular sheets. The device contains a blocker having at least one movable blocking element for stopping and subsequently releasing a certain number of objects fed, wherein the blocking element is a rotational body rotatable by a motor around its middle axis which, at its exterior periphery, has at least one reception for stopping the front edges of the objects fed in an idle position of the rotational body and for its deflection when turning the rotational body, and wherein at least one transport element for advancing the objects deflected when turning the rotational body is associated to the rotational body.

Abstract: An image forming apparatus includes a driving roller for transporting a medium; a follower roller disposed to face the driving roller for transporting the medium; a guide member for guiding the medium to change a transport direction thereof by an angle greater than 30°; and a rotational member disposed to be freely rotatable at a position corresponding to a side edge of the medium. Accordingly, after the driving roller and the follower roller transport the medium, when the medium contacts with the guide member, side edges of the medium contact with the guide member at an angle smaller than that of a center portion of the medium contacting with the guide member.

Abstract: Disclosed is a sheet discharging apparatus in which an apparatus main body portion is provided with plural discharging rollers for discharging sheets by rotation, and a shaft coaxially fixed to the discharging rollers. The shaft has an outer diameter smaller than an outer diameter of the discharging roller. At the discharging roller side of the shaft is provided a small-diameter portion, with the outer diameter of the small-diameter portion smaller than the outer diameter of another portion. A projection projects from a portion of the apparatus main body portion, a tip end of the projection being disposed in a step between the small-diameter portion and the other portion of the shaft. Also disclosed is an image forming apparatus having the sheet discharging apparatus, in which an image is formed on a sheet, and the sheet on which the image is formed is discharged by the sheet discharging apparatus.

Abstract: A sheet discharging apparatus has a sheet conveying path on which a sheet is conveyed, a discharge port for discharging therethrough the sheet conveyed on the sheet conveying path, a discharging tray on which the sheet discharged from the discharge port is stacked, and a rigidity heightening device provided on the discharge port for heightening a rigidity of the sheet discharged. The rigidity heightening device heightens a rigidity of the sheet at a beginning of discharge of the sheet from the discharge port, and weakens the rigidity of the sheet in a course of discharge of the sheet from the discharge port so that the sheet is discharged onto the discharging tray in such a state that the sheet hangs down.

Abstract: Provided is a sheet delivery apparatus for delivering a sheet to a delivery tray, including: a pair of delivery rotary members for nipping and delivering the sheet guided by the guide portion; and a projection that rotates about an axis being the same as an axis of one of the pair of delivery rotary members, is abutted against a trailing end of the sheet, and pushes out the trailing end of the sheet toward a delivery tray side. The guide portion deforms the sheet so that the sheet does not contact the projection, and after the trailing end of the sheet has passed through the guide portion, the projection and the trailing end of the sheet are abutted against each other.

Abstract: A finisher for an image forming apparatus includes a pair of rotatable downstream rollers and a pair of rotatable upstream roller between which a path on which an imaged medium travels. The finisher determines when a trailing edge of the medium is about to leave a nip of the upstream rollers and then stops a leading edge of the medium. By stopping the leading edge of the medium, the medium buckles and the trailing edge registers against the upstream nip line. A finishing device performs a hole punch, staple, or other finishing operation to the medium when the trailing edge registers against the upstream nip line. The finishing operation is performed at a speed equal to or greater than a speed at which the image forming apparatus forms the image on the medium and outputs the medium to the finisher.

Abstract: It is an object to provide a bill handling device, the control of the entire device of which is simplified. The bill handling device comprises: a bill validator including a bill sensor for discriminating the validity of a bill inserted into a bill insertion slot and further including a bill conveyor for conveying the bill to a predetermined position and sending the bill, which has been discriminated to be invalid by the bill sensor, back to the bill insertion slot; and a bill accommodating unit including a bill accommodating section for accommodating a bill, further including a bill detector for detecting the bill which has been sent out, furthermore including a conveyance roller for conveying the bill to the bill accommodating section side independently from the bill conveyor by a conveyance force weaker than the conveyance force of conveying the bill by the bill conveyor while the bill detector is detecting the bill.

Abstract: An ATM includes a currency note dispenser having a currency cassette, a note picker, a note transporter, and a note presenter. A cassette tambour door automatically opens during insertion of the cassette into the dispenser. The picker can pick notes through the opening. A spring loaded housing wall tab retains the picker shaft in mating connection with a drive pin. The transporter can move notes vertically and horizontally. The transporter includes belts between an idle shaft and a drive shaft. The idle shaft is vertically movable relative to a drive shaft to maintain belt tension. The transporter also includes convexly tapered rollers that automatically recenter a loose belt. A presenter gate is at a note dispensing outlet of the ATM. The gate is opened by actuating a lever linked with an arm connected to the gate. The gate opens by moving a pin upward in an angled slot.

Abstract: A sheet handling apparatus for feeding a sequential plurality of sheets having a sheet feed path for guiding sheets in a sheet feeding direction through the apparatus, the apparatus comprising rollers for driving sheets along the sheet feed path, and a trailing edge deflector deflecting means located on the sheet feed path, the trailing edge deflector being arranged to deflect the trailing edge of a leading sheet to ensure overlap by a following sheet on a predetermined side of the leading sheet.

Abstract: A sheet curl correcting device and an image forming apparatus incorporating the same. The image forming apparatus includes a fixing unit for fixing a toner image transferred by an electrophotographic image forming unit to a sheet, a pair of rollers having different hardnesses for correcting a sheet curl, a controlling unit for controlling a deformation amount of one of the rollers in accordance with a table of curl correction amounts, and a curl correction limiter for limiting the curl correction amount if the sheet is to be discharged to a stacker.

Abstract: An image forming apparatus having: an image forming portion to form an image on a sheet; a fixing device to fix the image to the sheet by heating; a conveying path switching member to switch a conveying direction of the sheet, which is provided on downstream of the fixing device in a sheet conveying direction; a first conveying path which has a first curved portion and is provided on downstream of the conveying path switching member; a second conveying path which has a second curved portion and is provided on downstream of the conveying path switching member; a curl applying member which is provided on downstream of the fixing device, and on upstream of the first and second curved portions; and a control unit to control driving of the conveying path switching member and of the curl applying member.

Abstract: The present invention provides an image forming apparatus that can perform stable sheet conveyance, regardless of whether a sheet processing apparatus is connected thereto. The image forming apparatus can be connected to a sheet processing apparatus that performs post processing on each conveyed sheet. The image forming apparatus includes: a pair of discharge rollers that are located at the discharge outlet of the image forming main body for sheet conveyance, and have rotational members arranged so as to alternately face both sides of each sheet in the direction perpendicular to the sheet conveying direction; and an upper discharge roller holding member that changes the center distance between the discharge rollers from a first center distance observed when the sheet processing apparatus is not connected to the image forming main body to a second center distance observed when the sheet processing apparatus is connected to the image forming main body to convey a sheet to the sheet processing apparatus.

Abstract: A rippler may be installed on a paper deliverer used in conjunction with a paper sheeter, in between the vacuum belts of the sheeter. The rippler includes an upwardly projecting ridge, causing paper passing over it to develop a ripple, thereby increasing the rigidity of the paper. This increased rigidity of the paper resists the tendency of the paper to fly upward as it is being transported by the deliverer.

Abstract: An image forming apparatus, including: an image forming section for forming a toner image on a transfer sheet; a fixing section for fixing the toner image on the transfer sheet; a sheet ejection section for ejecting the sheet on which the toner image has been fixed; and a sheet guide section, including a first guide member and a second guide member both of which are paired for guiding the sheet from the fixing section to the sheet ejection section; wherein a heat radiation characteristic of the first guide member is greater than that of the second guide member.

Abstract: A feeding device for feeding a recording medium in a feed direction, including: a drive roller having an annular recess; and a driven roller rotatably held and positioned such that a radially outer end portion of the driven roller is positioned within the annular recess of the drive roller. The driven roller is displaceable away from the drive roller, so that the recording medium is fed to pass between the drive and driven rollers, with the recording medium being gripped by the radially outer end portion of the driven roller and the radially outer end portion of the drive roller.

Abstract: An imaging apparatus includes a print engine having a print zone. A print media feed system transports a sheet of print media in a media feed direction along a media feed path through the print zone. The print media feed system includes a plurality of exit rollers positioned across a width of the media feed path. Each of a plurality of pressure rollers engages a respective one of the plurality of exit rollers to define a plurality of exit nips. A support structure mounts the plurality of exit rollers and the plurality of pressure rollers. The support structure positions the plurality of exit nips in an arrangement to define a transverse path across the width of the media feed path in the direction transverse to the media feed direction, the transverse path having a central portion and elevated portions on each side of the central portion.

Abstract: Ridges and grooves are alternately formed on a platen in the direction of transporting sheets. Wave holding spurs are rotatably supported by torsion springs downstream of a recording area, and pressed against the grooves. Sheet discharge roller pairs are disposed generally downstream from the grooves. Recording sheets exhibit cockling which rises up toward a recording head due to swelling from ink, but a substantial amount of the swelling is contained in the grooves, so the cockling does not come into contact with the recording head, and further, the peak-to-peak distance of the wave shapes of the recording sheets can be reduced. Following the leading edge of a recording sheet passing the sheet discharge roller pairs, the crests of the cockling are collapsed by transporting spurs and divided between wave holding spurs and the transporting spurs, and thus the peak-to-peak distance is further reduced, consequently preventing off-target landing of ink droplets.

Abstract: A discharge roller device includes at least one roller pair, at least one first free roller and at least one second free roller. The roller pair includes a driving roller and a pressure roller pushed against the driving roller. The first free roller is disposed at a side where the driving roller is disposed with respect to a plane including a nip part of the roller pair and a part of the first free roller is located in the pressure roller side rather than the plane. The second free roller is disposed at a side where the pressure roller is disposed with respect to the plane and a part of the second free roller is located in the driving roller side rather than the plane.

Abstract: To provide a curl straightening method for image receiving paper for sublimation dye transfer, which is capable of realizing a smaller roll core diameter of the roll paper. The curl of an image receiving paper 100 for sublimation dye transfer having stiffness from 500 to 2,500 mg in a direction parallel to the printing direction, which is measured according to JIS L1085, JIS L1096, is straightened by allowing the image receiving paper 100 to pass through gaps 4a, 5a of a guide 3 that bends the image receiving paper 100 in a reverse curling direction.

Abstract: A paper discharge unit for an inkjet printer which ejects a sheet on which image printing is completed by an ink cartridge out of a printer main body. The paper discharge unit for an inkjet printer includes paper discharge rollers rotatably mounted in the printer main body to feed the printing-completed sheet out of the printer main body; and paper discharge guides disposed downstream of the paper discharge rollers in a direction the sheet is fed, and guiding upward the front end portion of the sheet ejected from the paper discharge rollers to prevent the rear end portion of the sheet from being lifted. Accordingly, the front end portion of the sheet is deformed by the paper discharge guides to restrain the end portion of the sheet facing a nozzle part of the ink cartridge from being in contact with the nozzle part when the sheet is ejected, so that image printing becomes possible up to the end portion of the sheet, to thereby improve the printing efficiency of the inkjet printer.

Abstract: Provided is a sheet discharge apparatus including a plurality of stackers on which a sheet discharged from a conveyance passage is stacked, and a gate which changes a discharge direction of the sheet. The gate can move over a first changeover position to guide the sheet to one stacker, and a second changeover position to guide the sheet to the other stacker. When the gate is moved to the second changeover position, the sheet is guided to the other stacker through a bent guide passage. A pressing mechanism is disposed on an upstream side along a conveyance direction of the sheet from the gate. The pressing mechanism applies a pressure and gives a wavy shape to the sheet, and temporarily makes the sheet rigid as long as the gate is in the first position.

Abstract: A gripper pulls a web off a supply downstream through upstream and downstream clamps. The upstream clamp is closed on the web and a piece is cut off its end. Then the gripper is moved back upstream to form the cut-off piece into a dependent loop while the lower part of the downstream clamp is held down and back out of the way so it does not contact the dependent loop. Once the gripper has moved upstream passed the lowered downstream clamp part, it is raised and advanced downstream to press the web against the upper downstream clamp part. Then both clamps are displaced transversely to move the web as a dependent loop transversely away.

Abstract: A plate discharger includes a peeling claw, a transport device and an air blowing device. The transport device has a rotary shaft, first transport rollers rotatable about the rotary shaft, a driven rotary shaft connected to a drive gear meshed with and driven by a transmission gear disposed sideways from the first transport rollers, second transport rollers rotatable about the driven rotary shaft, peeling rollers pivotable about the rotary shaft, and belts wound around the first transport rollers and peeling rollers. When a printing plate is passed between the first transport rollers and second transport rollers, the air blowing device blows air to the undersurface of the printing plate.

Abstract: Vertical pocket feeder signature handling equipment which supplies signatures in an on-edge orientation one at a time to bindery equipment. The vertical pocket feeder particularly cooperates with a hopper loader apparatus which transfers and separates individual signatures of sheet materials from a vertically aligned, stack of such signatures. The separated, individual signatures may then be subjected to bindery operations such as stapling or stitching.

Abstract: A sheet registration system in an arcuate sheet path of a compact printer with a sheet feeding system in which the lead edge of the sheet is partially arcuately buckled against a transversely extending registration gate in said sheet path (such as stalled or slower speed sheet feed roller nips, or retractable fingers) in which there is a transversely variable arcuate control baffle system in said sheet path upstream of the registration gate for accommodating skewed sheets in the sheet path and thereby providing improved alignment of the lead edge of the skewed sheets with the transversely extending registration gate. The illustrated transversely variable arcuate control baffle system is provided by a variably positionable split baffle system providing for a larger arcuate buckle for one side of a skewed sheet than the other side of the skewed sheet. This may be in proportion to a sensed initial skew of the sheet.

Abstract: A sheet delivery apparatus includes a cutter cylinder, a cutter reception cylinder, and a conveyor provided downstream of the cylinders. The cutter cylinder and the cutter reception cylinder cooperatively cut a paper web so as to yield sheets of predetermined size. The sheets are delivered by the conveyor. A dampening unit is provided upstream of a region where the cutter cylinder and the cutter reception cylinder closely face each other and in the vicinity of the paper web so as to dampen the paper web such that the surface of the paper web which will face the cutter cylinder is dampened to a greater extent than is the other surface.

Abstract: An image forming apparatus of this invention is provided with a conveying guide that is curved in the direction reverse to the curved shape of a nip portion of a fixing unit in order for leading sheet paper that is vertically conveyed at the time of fixing in the horizontal direction and the top of the curved portion of the conveying guide is constructed with a guide belt. The contacting force of the curl correction unit with the guide belt of the curl correction unit is adjusted according to amount of curl of sheet paper produced at the time of fixing and corrects the curve of sheet paper properly.

Abstract: Ridges and grooves are alternately formed on a platen in the direction of transporting sheets. Wave holding spurs are rotatably supported by torsion springs downstream of a recording area, and pressed against the grooves. Sheet discharge roller pairs are disposed generally downstream from the grooves. Recording sheets exhibit cockling which rises up toward a recording head due to swelling from ink, but a substantial amount of the swelling is contained in the grooves, so the cockling does not come into contact with the recording head, and further, the peak-to-peak distance of the wave shapes of the recording sheets can be reduced. Following the leading edge of a recording sheet passing the sheet discharge roller pairs, the crests of the cockling are collapsed by transporting spurs and divided between wave holding spurs and the transporting spurs, and thus the peak-to-peak distance is further reduced, consequently preventing off-target landing of ink droplets.

Abstract: In an inkjet printing apparatus an inkjet printhead has a plurality of inkjet nozzles which eject ink onto media located within a print-zone. A drive shaft is located upstream of the printhead and is incrementally rotated to advance the media. The drive shaft has a longitudinal axis, a first radius over a central length and a second radius less than the first radius at a first recess and a second recess, each said recess being peripheral to the central length. A plurality of pinch devices stabilize the media against the drive shaft. A first guide is aligned with the first recess and is spaced from an axis of the drive shaft by a first distance which is less than the first radius. A second guide is aligned with the second recess and is spaced from the axis by a second distance less than the first radius.