US20090189337A1 - Paper output mechanism - Google Patents

Paper output mechanism Download PDF

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Publication number
US20090189337A1
US20090189337A1 US12/360,417 US36041709A US2009189337A1 US 20090189337 A1 US20090189337 A1 US 20090189337A1 US 36041709 A US36041709 A US 36041709A US 2009189337 A1 US2009189337 A1 US 2009189337A1
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United States
Prior art keywords
paper
roller
piece
decurling
conveyance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/360,417
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English (en)
Inventor
Akihito Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noritsu Koki Co Ltd
Original Assignee
Noritsu Koki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noritsu Koki Co Ltd filed Critical Noritsu Koki Co Ltd
Assigned to NORITSU KOKI CO., LTD. reassignment NORITSU KOKI CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YAMAMOTO, AKIHITO
Publication of US20090189337A1 publication Critical patent/US20090189337A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6552—Means for discharging uncollated sheet copy material, e.g. discharging rollers, exit trays
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6555—Handling of sheet copy material taking place in a specific part of the copy material feeding path
    • G03G15/6573—Feeding path after the fixing point and up to the discharge tray or the finisher, e.g. special treatment of copy material to compensate for effects from the fixing
    • G03G15/6576—Decurling of sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5125—Restoring form
    • B65H2301/51256—Removing waviness or curl, smoothing
    • B65H2301/512565—Removing waviness or curl, smoothing involving tri-roller arrangement

Definitions

  • the techniques disclosed in this specification relate to paper output mechanisms for outputting a piece of paper conveyed to the terminal end of a paper conveyance path from the terminal end thereof to a paper placement part disposed below the terminal end.
  • printers such as for photo printing systems their printer body is internally provided with a paper conveyance path along which paper is conveyed.
  • the terminal end of the paper conveyance path is located in the vicinity of a paper output port in the printer body.
  • a piece of paper (printed piece of paper) conveyed to the terminal end of the paper conveyance path is output from the terminal end through the paper output port by a paper output mechanism, such as a roller pair, disposed at the terminal end.
  • a paper placement part Disposed outside the printer body and near the paper output port is a paper placement part, made such as of a tray or a belt of a belt conveyer, for receiving output pieces of paper and placing them thereon. If the paper placement part is a belt conveyer, the printer is configured to convey pieces of paper placed on the belt of the belt conveyer in the direction orthogonal to the paper output direction and collect them for each print order (see, for example, Published Japanese Patent Application No. 2001-83684).
  • the paper placement part is generally disposed below the terminal end of the paper conveyance path, whereby the leading end of each piece of paper sent out from the terminal end towards the paper placement part sags by gravity and is output while sliding on the top surface of the paper placement part or the top surface of a piece of paper already placed on it. Therefore, after the trailing edge of the piece of paper is sent out, the paper stop point is not fixed owing to the frictional resistance acting on the leading edge thereof and the paper placement point varies with each output piece of paper. In particular, when a long rolled paper web is cut in a given length of piece and then output, the long paper web is normally rolled with the printing surface to be printed coming outside and the printed and cut piece of paper is output with the printed surface facing up.
  • the output piece of paper has a curl with the lengthwise middle thereof rising up from both ends thereof owing to a core set of the paper web rolled around a core.
  • This increases variations in the paper placement point. If the paper placement point varies in this manner, this increases the likelihood that, particularly when pieces of paper are conveyed by a belt conveyer to transfer them such as to a collection part, the transfer is disrupted.
  • the paper stop point i.e., the paper placement point
  • the output speed of the piece of paper must be reduced in order to certainly dry the ink. In this case, it is difficult to increase the output speed of the piece of paper.
  • an object of the invention is to provide a paper output mechanism that can stabilize the paper placement point on the paper placement part even if it is difficult to increase the output speed of the piece of paper.
  • a paper output mechanism disposed at the terminal end of a paper conveyance path, for outputting a piece of paper conveyed to the terminal end of the paper conveyance path from the terminal end thereof to a paper placement part disposed below the terminal end of the paper conveyance path.
  • the paper output mechanism includes: a roller pair composed of a first roller and a second roller travelable around the first roller and configured, when the second roller is in a first position on a traveling path of the second roller, to output the piece of paper to the paper placement part by pinching the piece of paper between the first and second rollers and driving at least one of the first and second rollers into rotation with an actuator; and a roller position changing mechanism for switching the second roller between the first position and a second position located on the traveling path of the second roller and closer to the paper output side than the first position, wherein the roller position changing mechanism is configured, when the first roller and the second roller in the first position send out the trailing edge of the piece of paper to the paper placement part in the course of output of the piece of paper to the paper placement part, to change the second roller from the first position to the second position.
  • the second roller moves from the first position to the second position. Therefore, in conjunction with the movement of the second roller, a force in the paper output direction is applied from the second roller to the trailing edge of the piece of paper, whereby the piece of paper is accelerated in the paper output direction.
  • the piece of paper can easily move against the frictional force acting on the leading edge thereof. Therefore, even if the output speed of the piece of paper is low in sending out part thereof other than the trailing edge, the output speed is increased in sending out the trailing edge thereof, whereby the paper placement point on the paper placement part can be stabilized. Furthermore, since the output speed of the piece of paper is decreased in sending out the part thereof other than the trailing edge, ink adhering to the printing surface of the piece of paper, for example, can be certainly dried.
  • the first position is a position in which the axis of rotation of the first roller is located closer to the paper output side than the axis of rotation of the second roller and the second position is a position in which the axis of rotation of the second roller is located closer to the paper output side than the axis of rotation of the first roller and the pinch of the piece of paper between the first and second rollers is released.
  • the traveling stroke of the second roller from the first position to the second position can be increased to increase the output speed of the trailing edge of the piece of paper as much as possible.
  • the first and second rollers can easily correct the curl of the piece of paper (decurl the piece of paper), which further stabilizes the paper placement point on the paper placement part.
  • the pinch of the piece of paper is released, whereby the next piece of paper can smoothly enter between the first and second rollers. This prevents the leading edge of the next piece of paper from lodging on the first or second roller.
  • the rotational driving speed of the roller driven into rotation by the actuator is preferably changed to higher side.
  • the piece of paper can be further accelerated in the paper output direction. This further stabilizes the paper placement point on the paper placement part.
  • the roller pair is preferably disposed at the terminal end of the paper conveyance path provided in a printer body and in the vicinity of a paper output port in the printer body.
  • This provides an optimum paper output mechanism for a printer in a photo printing system handling curled pieces of paper.
  • FIG. 1 is a perspective view showing the appearance of an inkjet printer including a decurling unit as a paper output mechanism according to a first example embodiment.
  • FIG. 2 is a perspective view showing the structure of the inkjet printer inside a housing.
  • FIG. 3 is a plan view showing the structure of the inkjet printer inside the housing.
  • FIG. 4 is a front view showing the structure of the inkjet printer inside the housing.
  • FIG. 5 is a schematic diagram of the inkjet printer when viewed from the left of the housing, showing a conveyance path of printing paper.
  • FIG. 6 is a cross-sectional view showing the structure of a drying unit and the decurling unit when viewed from the left of the housing.
  • FIG. 7 is a perspective view showing the structure of the inkjet printer around a paper output port when viewed from the front of the housing.
  • FIG. 8 is a front view showing the structure of the inkjet printer around the paper output port when viewed from the front of the housing.
  • FIG. 9 is a side view of the decurling unit when a decurling roller is positioned in a pinch release position.
  • FIG. 10 is a side view of the decurling unit when the decurling roller is positioned in a conveyance position.
  • FIG. 11 is a side view of the decurling unit when the decurling roller is positioned in a decurling position.
  • FIG. 12 is a perspective view showing the structure of an inkjet printer including a decurling unit according to a second example embodiment.
  • FIG. 13 is a plan view showing the structure of the inkjet printer according to the second example embodiment.
  • FIG. 1 shows the appearance of an inkjet printer A including a decurling unit as a paper output mechanism according to a first example embodiment
  • FIGS. 2 to 5 show the internal structure of the inkjet printer A.
  • the inkjet printer A is used for a photographic printing system and, for example, used for printing photographic images on printing paper P 1 or P 2 based on image data transmitted via a communication cable from a reception block for obtaining the image data and correcting it as necessary.
  • the inkjet printer A is configured to be capable of performing an automatic printing for pulling out one end of a long roll of printing paper P 2 and printing an image on the printing surface of the roll of printing paper P 2 (hereinafter, referred to as a paper web P 2 ) and a manual-feed printing for printing an image on the printing surface of a sheet of printing paper P 1 (hereinafter, referred to as a paper sheet P 1 ) previously cut in a given size.
  • the paper sheet P 1 and the paper web P 2 need not be particularly distinguished, they are referred to as printing paper P 1 or P 2 .
  • the printing surface means the surface on which an image is to be printed.
  • the printing surface of each paper sheet P 1 is determined when the paper sheet P 1 is set on a manual-feed tray 7 (see FIG. 5 ). Specifically, the printing surface is the side of the paper sheet P 1 facing upward when the paper sheet P 1 is set on the manual-feed tray 7 .
  • the printing surface of the paper web P 2 is the side thereof facing radially outward when the paper web P 2 is rolled.
  • the inkjet printer A includes a printer body 90 , a manual-feed tray 7 for manually setting a paper sheet P 1 thereon and feeding it therefrom into the printer body 90 , and a paper output tray 5 serving as a paper placement part for receiving pieces of printing paper P 1 or P 2 output from the printer body 90 and placing them thereon.
  • the printer body 90 includes: a housing 6 ; a paper roll containing part 1 disposed in a lower part of the interior of the housing 6 and containing a paper web P 2 rolled with its printing surface outside; a printing part 2 (see FIGS. 2 and 5 ), disposed in an upper part of the interior of the housing 6 (above the paper roll containing part 1 ), for printing based on image data an image on the printing surface of the paper sheet P 1 fed from the manual-feed tray 7 or the printing surface of the paper web P 2 pulled out of the paper roll containing part 1 ; ink storages 3 , located in the lower part of the interior of the housing 6 on both sides of the paper roll containing part 1 , for storing ink to be supplied to the printing part 2 ; and a roller unit 200 , disposed on an upper part of a cover member 95 attached to the housing 6 to be freely opened and closed, for conveying and feeding a paper sheet P 1 set on the manual-feed tray 7 towards the printing part 2 when the cover member 95 is closed.
  • a roller cutter 41 for cutting out an unnecessary part of printed printing paper P 1 or P 2
  • a back printing unit 4 for printing a serial number on the back side of each piece of printing paper P 1 or P 2
  • a drying unit U 6 for drying the piece of printing paper P 1 or P 2 printed in the printing part 2
  • a paper output unit U 4 for conveying the piece of printing paper P 1 or P 2 printed in the printing part 2 further downstream
  • a decurling unit U 7 for performing a decurling process of correcting the curl of the paper web P 2 that is a core set formed by rolling the paper web P 2 around the core.
  • the paper output tray 5 Disposed downstream of the decurling unit U 7 in the direction of paper conveyance is the paper output tray 5 , extending outside from a paper output port 47 in the housing 6 , for receiving pieces of printing paper P 1 or P 2 delivered by the decurling unit U 7 and placing them thereon.
  • the housing front side the side of the housing 6 towards the paper output tray 5 (“output side” shown in FIG. 3 ) is referred to as the housing front side
  • the side thereof opposite to the paper output tray 5 (“feeding side” shown in FIG. 3 ) is referred to as the housing rear side
  • the left side thereof as viewed from the housing front side is referred to as the housing left side
  • the right side thereof as viewed from the housing front side is referred to as the housing right side.
  • the right-to-left direction in FIG. 5 is the housing front-to-rear direction
  • the direction orthogonal to the drawing sheet of FIG. 5 is the housing right-to-left direction.
  • the housing right-to-left direction coincides with the width direction of the paper sheet P 1 set on and fed from the manual-feed tray 7 and the width direction of the paper web P 2 contained in and fed from the paper roll containing part 1 .
  • the inkjet printer A is provided with a paper conveyance mechanism for pulling the leading edge of a paper web P 2 out of the paper roll containing part 1 and conveying it along a given paper conveyance path.
  • the paper conveyance mechanism includes, in order from the feed unit U 1 for feeding a paper web P 2 , the feed unit U 1 , a printing unit U 2 , a cutter unit U 3 , the drying unit U 6 , the paper output unit U 4 and the decurling unit U 7 .
  • image data is printed on the printing surface of the printing paper P 1 or P 2 located on the paper conveyance path in the printing unit U 2 provided in the printing part 2 .
  • the paper conveyance mechanism further includes a manual-feed unit U 5 configured to pull in a paper sheet P 1 from the manual-feed tray 7 and feed it to the printing part 2 .
  • the paper conveyance mechanism is configured so that, in printing on a paper web P 2 , the feed unit U 1 feeds the paper web P 2 set in the paper roll containing part 1 to the printing unit U 2 , the printing unit U 2 then prints image data on the fed paper web P 2 with the print head H while conveying the paper web P 2 . Then, the paper conveyance mechanism coveys the printed paper web P 2 to the cutter unit U 3 , the cutter unit U 3 cuts the paper web P 2 in a given print size, the drying unit U 6 then dries the cut piece of paper web P 2 , and the paper conveyance mechanism conveys the cut piece of paper web P 2 out to the paper output tray 5 while the decurling unit U 7 decurls the cut piece of paper web P 2 .
  • the upstream side and downstream side in the direction of conveyance of the paper web P 2 being conveyed during printing is referred to simply as the upstream side and downstream side, respectively.
  • the feed unit U 1 includes a core roller 21 for winding a paper web P 2 in a roll thereon to contain the rolled paper web P 2 in the paper roll containing part 1 , a transverse restriction roller 22 for restricting the transverse position of the paper web P 2 pulled out of the core roller 21 , a conveyance drive roller 24 capable of being driven into rotation by an unshown electric motor to convey the paper web P 2 , and two pinch rollers 25 opposed to the conveyance drive roller 24 and engageable against the conveyance drive roller 24 to pinch the paper web P 2 together with the conveyance drive roller 24 .
  • the feed unit U 1 is configured to pull the paper web P 2 out of the paper roll containing part 1 and also feed it to the printing part 2 by the rotation of the conveyance drive roller 24 .
  • the conveyance drive roller 24 is configured to be rotated forward by an unshown electric motor to pull the paper web P 2 out of the paper roll containing part 1 and feed it to the printing part 2 and rotated backward by the electric motor to return the paper web P 2 to the paper roll containing part 1 .
  • the inkjet printer A can cut off the printed part of the paper web P 2 into a given size by the cutter unit U 3 downstream of the printing part 2 , then return the remaining paper web P 2 after the cutting upstream and restart printing with the leading edge of the remaining paper web P 2 or can return the paper web P 2 after the cutting into the paper roll containing part 1 , feed a paper sheet P 1 to the printing part 2 through the manual-feed unit U 5 and print on it. Furthermore, in replacing the paper web P 2 with new one, part of the paper web P 2 pulled out of the paper roll containing part 1 can be returned into the paper roll containing part 1 .
  • the printing unit U 2 includes: the print head H for ejecting ink to the printing paper P 1 or P 2 and forming an image on it; a paper holder D for holding by suction the printing paper P 1 or P 2 at a position allowing printing of the print head H; and a pair of paper conveyance rollers 33 disposed downstream of the paper holder D and engaged against each other.
  • the conveyance drive roller 24 and the pinch rollers 25 in the feed unit U 1 are used also as components of the printing unit U 2 and act to convey the printing paper P 1 or P 2 in the printing unit U 2 .
  • the print head H is configured to be movable along a rail 30 extending in a main scanning direction X (see FIG. 3 ) coinciding with the width direction of the printing paper P 1 or P 2 (i.e., the housing right-to-left direction). Specifically, when the rotational force of a drive motor 32 is transmitted through a pulley to a drive belt 31 , the print head H moves in the main scanning direction X according to the amount of rotation of the drive belt 31 .
  • the print head H further includes two head units 38 and 38 (see FIG. 5 ) arranged along a sub-scanning direction Y (see FIG. 3 ) orthogonal to the main scanning direction X and coinciding with the direction of travel of the printing paper P 1 or P 2 (i.e., the housing front-to-rear direction).
  • the print head H is configured to print a given image or characters on the printing paper P 1 or P 2 by ejecting ink through ink-jet nozzles (not shown) formed in these two head units 38 and 38 .
  • the printing paper P 1 or P 2 is intermittently (stepwise) conveyed in certain unit amounts of conveyance in the sub-scanning direction Y by the conveyance drive roller 24 , the pinch rollers 25 and the paper conveyance rollers 33 .
  • the print head H scans one way (makes a forward scanning or a backward scanning) in the main scanning direction X.
  • ink is concurrently ejected through the ink-jet nozzles of each head unit 38 to the printing surface (top surface) of the printing paper P 1 or P 2 .
  • the printing paper P 1 or P 2 is conveyed by a unit amount of conveyance and the print head H then scans once. By repeating this operation, a desired image is printed.
  • the ink storages 3 include their respective box-shaped cases 61 (see FIG. 4 ) disposed on the right and left of the inkjet printer A. These cases 61 contain seven removable ink cartridges in total (in FIG. 4 , three in the left case 61 and four in the right case 61 ).
  • the ink cartridges 62 are charged with different types of ink having different hues. Therefore, the ink cartridges 62 spent or being used can be replaced with new ones by removing them from the cases 61 and setting new ones in the cases 61 . Seven types of ink charged in these ink cartridges 62 are yellow (Y), magenta (M), cyan (C), black (K), red (R), violet (V) and clear (CL).
  • the cutter unit U 3 includes a roller cutter 41 and is configured to cut the printing paper P 1 or P 2 into a given size (length) by moving the roller cutter 41 in the width direction at an appropriate position of the length of the printing paper P 1 or P 2 while rotating the roller cutter 41 .
  • a chip collecting box 65 Disposed below the roller cutter 41 is a chip collecting box 65 for collecting chips of the printing paper P 1 or P 2 formed by the cutting.
  • the chip collecting box 65 is configured so that the operator can slide it out of the housing 6 by pulling its handle 66 and take out the chips collected in it.
  • the piece of printing paper P 1 or P 2 cut by the cutter unit U 3 is conveyed to the paper output unit U 4 by a pair of conveyance rollers 43 engaged against each other.
  • the back printing unit 4 is disposed between the cutter unit U 3 and the paper output unit U 4 .
  • a serial number or the like is printed on the back (underside) of the printing paper P 1 or P 2 passing through it.
  • the paper output unit U 4 includes two pairs of output rollers 45 and 46 for conveying the piece of printing paper P 1 or P 2 and delivering it to the decurling unit U 7 .
  • the conveyance rollers 43 and the output rollers 45 and 46 are configured to be synchronously driven into rotation by an unshown electric motor. Furthermore, the later-described conveyance roller 81 and decurling roller 82 of the decurling unit U 7 are likewise configured to be driven into rotation by the electric motor (actuator) in synchronism with the conveyance rollers 43 and the output rollers 45 and 46 . Note that both the conveyance roller 81 and the decurling roller 82 need not necessarily be driven into rotation and only one of both (preferably, only the conveyance roller 81 ) may be driven into rotation.
  • each pair of conveyance rollers 43 and output rollers 45 and 46 are configured to be disengaged one from the other before the leading edge of the printing paper P 1 or P 2 conveyed by the upstream conveyance drive roller 24 and print conveyance rollers 33 is pinched between the pair.
  • the upper conveyance roller moves up and disengages from the lower conveyance roller before the leading edge of the printing paper P 1 or P 2 contacts the pair of conveyance rollers 43 .
  • the upper roller of each pair of output rollers 45 and 46 moves up and disengages from the lower roller before the leading edge of the printing paper P 1 or P 2 contacts the pair of output rollers. This eliminates inconveniences, such as creases of the printing paper P 1 or P 2 formed owing to its leading edge lodging on the conveyance rollers 43 and the output rollers 45 and 46 .
  • the upper rollers of the pair of conveyance rollers 43 and the pairs of output rollers 45 and 46 which have been moved up, are concurrently returned to their positions of engagement against the lower rollers, thereby pinching the printing paper P 1 or P 2 .
  • the drying unit U 6 is, as shown in FIG. 6 , disposed between two pairs of engageable rollers in the paper output unit U 4 , i.e., between the pair of upstream output rollers 45 and the pair of downstream output rollers 46 .
  • the drying unit U 6 is configured to suck air into the housing 6 through an air inlet 48 formed in the housing 6 above and in the vicinity of the paper output port 47 , apply heat to the sucked air and blow out the air as dry air.
  • the drying unit U 6 includes a drying chamber 71 disposed on the paper conveyance path of the printing paper P 1 or P 2 , a dryer 72 for supplying dry air to the drying chamber 71 and an outside cover 70 for introducing the air sucked in the housing 6 through the air inlet 48 to the dryer 72 .
  • the drying chamber 71 is defined by an upper partition wall 71 a and a lower partition wall 71 b that are opposed to each other with the printing paper P 1 or P 2 therebetween, and constitutes a retention space for retaining dry air blown against the printing paper P 1 or P 2 from the dryer 72 .
  • the dryer 72 includes a plurality of intake fans 73 disposed in the housing 6 at laterally spaced intervals to take air from the outside through the air inlet 48 of the housing 6 into the dryer 72 , a heater 74 for heating the air taken in by the intake fans 73 , and an exhaust nozzle 75 , disposed at the lower end of the dryer 72 , for blowing dry air heated by the heater 74 therethrough to the printing paper P 1 or P 2 .
  • the exhaust nozzle 75 opens at the bottom of the dryer 72 and downstream in the direction of paper conveyance and is configured to blow dry air down and downstream in the direction of paper conveyance. The dry air is used to dry ink adhering to the printing surface of the printing paper P 1 or P 2 in the printing part 2 .
  • the outside cover 70 is disposed above the paper output port 47 of the housing 6 and configured to allow air sucked in the housing 6 through the air inlet 48 to flow through a flow space 76 located in the outside cover 70 and introduce the air to the intake fans 73 .
  • the outside cover 70 has an openable and closable rear door formed in the surface thereof. Since such a drying unit U 6 is provided, the blow of dry air promotes the drying of ink ejected from the print head H to the printing paper P 1 or P 2 even if the ink on the printed piece of paper is not yet dried.
  • the decurling unit U 7 (i.e., the later-described roller pair composed of a conveyance roller 81 and a decurling roller 82 ) is disposed at the terminal end of the paper conveyance path provided in the housing 6 of the printer body 90 and in the vicinity of the paper output port 47 in the housing 6 (on the downstream side of the dryer 72 ) and configured to output a piece of printing paper P 1 or P 2 , which has been conveyed to the terminal end of the conveyance path, from the terminal end through the paper output port 47 to the paper output tray 5 .
  • the paper output tray 5 is disposed below the terminal end of the paper conveyance path (the paper output port 47 ), whereby a level difference is produced between the paper output tray 5 and the terminal end of the paper conveyance path.
  • the decurling unit U 7 has the function of performing a decurling process of correcting the curl of a paper web P 2 that is a core set formed by rolling the paper web P 2 around the core (i.e., a curl of the paper web P 2 curving with the back inside), and includes a roller pair composed of a conveyance roller 81 (corresponding to a first roller) and a decurling roller 82 (corresponding to a second roller) and a position changing element 83 for changing the relative position of the decurling roller 82 to the conveyance roller 81 . Furthermore, a free roller 80 is disposed upstream of the conveyance roller 81 to rotate in conjunction with the movement of the piece of printing paper P 1 or P 2 being conveyed.
  • the conveyance roller 81 is, as shown in FIGS. 7 and 8 , composed of a roller shaft 81 a extending in the width direction of the printing paper P 1 or P 2 and a plurality of roller bodies 81 b, 81 b, . . . arranged at spaced intervals in the axial direction of the roller shaft 81 a.
  • a guide member 92 Disposed on the downstream side of the conveyance roller 81 is a guide member 92 for smoothly feeding the piece of printing paper P 1 or P 2 output from the conveyance roller 81 towards the paper output tray 5 while guiding the trailing edge thereof to prevent it from being caught by the conveyance roller 81 .
  • the guide member 92 includes a pair of laterally arranged guide plates 92 b and 92 b, extending in the axial direction of the conveyance roller 81 to cover the lower edge of the conveyance roller 81 , for guiding the piece of printing paper P 1 or P 2 to the paper output tray 5 , and projections 92 a, 92 a, projecting from the upper edge of the guide plates 92 b and 92 b to come between each adjacent roller bodies 81 b and 81 b, for guiding the trailing edge of the piece of printing paper P 1 or P 2 against being caught between each adjacent roller bodies 81 b and 81 b.
  • the decurling roller 82 has a smaller diameter than the conveyance roller 81 , extends continuously in the width direction of the printing paper P 1 or P 2 and is disposed travelably substantially along the roller surface of the conveyance roller 81 (the outer peripheries of the roller bodies 81 b ). As described later, a decurling position, a conveyance position and a pinch release position are set on the traveling path of the decurling roller 82 . The decurling roller 82 is changed to these plural positions.
  • a shaft end of the decurling roller 82 is rotatably attached to a lever 84 .
  • the lever 84 includes an attachment part 84 a having a general shape of the letter C to surround the upstream side of the conveyance roller 81 when viewed in the axial direction of the roller shaft 81 a (in the width direction of the printing paper P 1 or P 2 ) and an abutment part 84 b extending upstream and obliquely downward from the upstream side of the lower end of the attachment part 84 a.
  • the decurling roller 82 is rotatably attached to the upper distal end of the generally C-shaped attachment part 84 a, while a lever shaft 85 is attached to the lower distal end thereof.
  • the decurling roller 82 is configured to circularly move substantially along the roller surface of the conveyance roller 81 by pivotally moving the lever 84 about the lever shaft 85 .
  • a bias spring 86 is anchored to the abutment part 84 b of the lever 84 and an attachment bracket 91 disposed to the upstream side of the free roller 80 to urge the lever 84 towards rotating counterclockwise in FIG. 6 and putting the decurling roller 82 into the later-described pinch release position.
  • the position changing element 83 Disposed on the upstream side of the lever 84 is the position changing element 83 for pressing the lever 84 while abutting on the abutment part 84 b to rotate the lever 84 clockwise against the urging force of the bias spring 86 .
  • the position changing element 83 includes a body 83 a pivotable about a pivot shaft 83 c extending in the width direction of the printing paper P 1 or P 2 and a roller 83 b rotatably attached to the upper end of the body 83 a and capable of abutting on the abutment part 84 b.
  • the body 83 a is configured to be pivotally moved about the pivot shaft 83 c by an unshown pulse motor.
  • the position changing element 83 is configured to change the relative position of the decurling roller 82 to the conveyance roller 81 by changing its angle of rotation while allowing its roller 83 b to abut on the abutment part 84 b of the lever 84 .
  • the decurling roller 82 In the pinch release position, the decurling roller 82 is out of touch with the conveyance roller 81 on the opposite side of the paper conveyance path to the conveyance roller 81 (above the conveyance roller 81 ), whereby a given clearance H (larger than the thickness of the printing paper P 1 or P 2 ) is created between the conveyance roller 81 and the decurling roller 82 and the pinch of the printing paper P 1 or P 2 (roller engagement) is released.
  • the axis of rotation of the decurling roller 82 is located closer to the paper output side than (downstream from) the axis of rotation of the conveyance roller 81 .
  • a detection lug 87 is attached to the body 83 a of the position changing element 83 .
  • the detection lug 87 deviates to the left from a transmission sensor 88 as shown in FIG. 9 , it is detected that the decurling roller 82 is positioned in the pinch release position.
  • the pinch of the printing paper P 1 or P 2 between the conveyance roller 81 and the decurling roller 82 can be released.
  • the pressing of the decurling roller 82 against a paper web P 2 is released by moving the decurling roller 82 in decurling process from the later-described decurling position to the pinch release position.
  • an inconvenience can be eliminated that an indentation of the decurling roller 82 is left on the paper web P 2 . This prevents deterioration of printing quality due to the indentation.
  • the body 83 a of the position changing element 83 is pivotally moved counterclockwise to press the roller 83 b against the abutment part 84 b of the lever 84 until the transmission sensor 88 detects the detection lug 87 .
  • the lever 84 is pivotally moved clockwise against the urging force of the bias spring 86 to position the decurling roller 82 in the conveyance position in which the decurling process is disabled and a paper sheet P 1 is conveyed.
  • the paper sheet P 1 is pinched between the conveyance roller 81 and the decurling roller 82 and both the rollers 81 and 82 are driven into rotation, whereby the paper sheet P 1 is delivered to the paper output tray 5 .
  • the decurling roller 82 is positioned slightly upstream from the conveyance roller 81 .
  • the axis of rotation of the conveyance roller 81 is located closer to the paper output side than the axis of rotation of the decurling roller 82 .
  • the paper sheet P 1 is never bent along the roller surface of the decurling roller 82 . Even if a paper web P 2 is conveyed in the conveyance position, the paper web P 2 is not bent along the roller surface of the decurling roller 82 and, therefore, it cannot be decurled.
  • the decurling roller 82 Since the decurling roller 82 is positioned slightly upstream from the conveyance roller 81 , a greater clearance is created between both the conveyance roller 81 and the decurling roller 82 than the case where both the rollers 81 and 82 are vertically juxtaposed with respect to the paper conveyance direction (but it is smaller than the thickness of the paper sheet P 1 ). Thus, the pinching force of the rollers 81 and 82 against the paper sheet P 1 can be reduced to reduce the load applied to the paper sheet P 1 . Specifically, the paper sheet P 1 is conveyed in a slightly sagging state.
  • the clearance between both the rollers 81 and 82 is smaller than the thickness of the paper sheet P 1 .
  • both the rollers 81 and 82 pinch the paper sheet P 1 at least the roller surface of the conveyance roller 81 deforms so that the clearance between both the rollers 81 and 82 becomes equal to the thickness of the paper sheet P 1 .
  • the body 83 a of the position changing element 83 is further pivotally moved counterclockwise to press the roller 83 b against the abutment part 84 b until the detection lug 87 deviates to the right from the transmission sensor 88 and is not detected by it.
  • the decurling roller 82 is positioned in the decurling position in which the decurling process is enabled and a piece of paper web P 2 is conveyed.
  • the axis of rotation of the decurling roller 82 is located upstream from the axis of rotation of the conveyance roller 81 and the decurling roller 82 moves towards the conveyance roller 81 (below) beyond the paper conveyance path.
  • the decurling roller 82 presses down the piece of paper web P 2 to bend it along the roller surface of the decurling roller 82 with its printing surface inside, thereby decurling the piece of paper web P 2 . Furthermore, in the same manner as in the conveyance position, the piece of paper web P 2 is pinched between the conveyance roller 81 and the decurling roller 82 and both the rollers 81 and 82 are driven into rotation, whereby the piece of paper web P 2 is delivered to the paper output tray 5 .
  • the axis of rotation of the conveyance roller 81 is located closer to the paper output side than the axis of rotation of the decurling roller 82 . However, in the decurling position, the distance between both the axes of rotation along the conveyance direction is larger than that in the conveyance position.
  • the clearance between the decurling roller 82 and the conveyance roller 81 when the decurling roller 82 is in the decurling position is set to be larger than that when the decurling roller 82 is in the conveyance position.
  • the clearance between the decurling roller 82 and the conveyance roller 81 is set to be larger than the thickness of the paper web P 2 when the decurling roller 82 is in the decurling position, while the clearance is set to be smaller than the thickness of the paper web P 2 (and the thickness of the paper sheet P 1 ) when the decurling roller 82 is in the conveyance position.
  • the clearance is gradually changed, which prevents a strong pressing force from rapidly acting on the restoring force of the piece of paper web P 2 towards stretching straight and minimizes damage to the piece of paper web P 2 .
  • a plurality of decurling positions are set substantially along the roller surface of the conveyance roller 81 (and shown in the imaginary lines in FIG. 11 ).
  • the position of the decurling roller 82 shown in the solid line is a reference decurling position
  • the position of the decurling roller 82 moved clockwise from the reference position is a strong decurling position where the decurling force of the decurling roller 82 (the pressing force thereof against the paper web P 2 ) is strong
  • the position of the decurling roller 82 moved counterclockwise from the reference position is a weak decurling position where the decurling force is weak
  • the position of the decurling roller 82 further moved counterclockwise from the weak decurling position is a weakest decurling position where the decurling force is weakest.
  • the position changing element 83 adjusts the strength of the decurling force to the paper web P 2 by moving the decurling roller 82 among the plural decurling positions from the weakest to the strong decurling position.
  • an appropriate decurling force to the shape of a curl of the piece of paper web P 2 can be applied to the piece of paper web P 2 .
  • part of the paper web P 2 in the vicinity of the core around which the paper web P 2 is rolled has a small radius of curvature and is therefore strongly curled, while part of the paper web P 2 in the vicinity of the outer periphery thereof has a large radius of curvature and is therefore weakly curled.
  • the strength of the decurling force is adjusted according to the amount of use of the rolled paper web P 2 contained in the paper roll containing part 1 .
  • the curl of each piece of the paper web P 2 can be corrected with an optimum decurling force.
  • the decurling roller 82 is set to the weakest decurling position.
  • the decurling roller 82 is set to the weak decurling position.
  • the decurling roller 82 is set to the strong decurling position.
  • the decurling force to the cut piece of paper web P 2 may be set to be stronger than when the length of a cut piece of paper web P 2 is equal to or smaller than the predetermined value.
  • the decurling force applied to the piece of paper web P 2 may be set to be larger as the piece of paper web P 2 becomes longer.
  • the decurling force applied to the piece of paper web P 2 may be adjusted according to the material of the paper web P 2 .
  • an appropriate decurling force with which the piece of paper web P 2 can be easy to decurl is applied to the piece of paper web P 2 according to its material, such as by setting a strong decurling force for the paper web P 2 made of a hard material having a strong elasticity.
  • information on the date of production of the paper web P 2 may be stored in a memory, such as an IC chip, provided in the core for the paper web P 2 and the strength of the decurling force applied to each cut piece of the paper web P 2 may be adjusted according to the number of days elapsed from the data of production by reading the information on the date of production. Specifically, if the number of days elapsed from the date of production, having been read from the memory for the paper web P 2 , is over a predetermined number of days, the cut piece of paper web P 2 is determined to be strongly curled and the decurling force is set to be strong.
  • the decurling position or the conveyance position corresponds to the first position on the traveling path of the decurling roller 82 and the pinch release position corresponds to the second position located on the traveling path of the decurling roller 82 and closer to the paper output side than the first position.
  • the position changing element 83 and the lever 84 constitute a roller position changing mechanism for switching the decurling roller 82 between the first position and the second position.
  • the under surface of a lower partition wall 71 b defining part of the drying chamber 71 of the drying unit U 6 has a detection sensor 93 provided on a downstream part thereof to detect the leading edge and trailing edge of a piece of printing paper P 1 or P 2 .
  • the detection sensor 93 detects the leading edge of the piece of printing paper P 1 or P 2
  • the piece of printing paper P 1 or P 2 is conveyed a predetermined length from the point in time of detection until the leading edge of the piece of printing paper P 1 or P 2 reaches a point corresponding to the conveyance roller 81 and, then, the decurling roller 82 of the decurling unit U 7 is moved from the pinch release position to the decurling position or conveyance position.
  • the decurling roller 82 stands by at the pinch release position as described later, so that the conveyance roller 81 and the decurling roller 82 can smoothly pinch the piece of printing paper P 1 or P 2 when the piece of printing paper P 1 or P 2 is transferred from the paper output unit U 4 to the decurling unit U 7 .
  • the detection sensor 93 detects the trailing edge of the piece of printing paper P 1 or P 2
  • the piece of printing paper P 1 or P 2 is conveyed a predetermined length from the point in time of detection until the trailing edge of the piece of printing paper P 1 or P 2 reaches a point between the free roller 80 and the conveyance roller 81 and, then, the decurling roller 82 of the decurling unit U 7 is moved from the decurling position or conveyance position to the pinch release position.
  • the decurling roller 82 is switched from the decurling position or the conveyance position to the pinch release position.
  • the trailing edge of the piece of printing paper P 1 or P 2 is moved at a stroke to the paper output tray 5 . Therefore, the output speed of the piece of printing paper P 1 or P 2 increases, which provides smooth transfer of the piece of printing paper P 1 or P 2 to the paper output tray 5 and stabilizes the placement point of pieces of printing paper P 1 or P 2 on the paper output tray 5 .
  • a level difference exists between the paper output tray 5 and the terminal end of the paper conveyance path and, therefore, the leading edge of the piece of printing paper P 1 or P 2 is likely to sag by gravity and is sent out while sliding on the top surface of the paper output tray 5 or the top surface of the piece of printing paper P 1 or P 2 already placed on it.
  • the paper stop point i.e., the paper placement point, is not fixed owing to the frictional resistance acting on the leading edge thereof.
  • the paper placement point can be stabilized.
  • the output speed of the piece of printing paper P 1 or P 2 is decreased in sending out the part thereof other than the trailing edge.
  • the ink adhering to the printing surface of the piece of printing paper P 1 or P 2 can be certainly dried by the dryer 72 of the drying unit U 6 .
  • the decurling roller 82 is positioned in the pinch release position.
  • the decurling roller 82 can stand by as it is until the leading edge of the next piece of printing paper P 1 or P 2 comes to the decurling roller 82 . This eliminates the need to bother to change the decurling roller 82 to the pinch release position in transferring the next piece of printing paper P 1 or P 2 .
  • the rotational speed of the electric motor driving the conveyance roller 81 and the decurling roller 82 is increased in addition to movement of the decurling roller 82 to the pinch release position.
  • the rotational driving speed of the conveyance roller 81 and the decurling roller 82 is changed to their higher side, whereby the placement point of pieces of printing paper P 1 or P 2 on the paper output tray 5 can be further stabilized.
  • the decurling unit U 7 is disposed downstream of the dryer 72 to decurl the piece of paper web P 2 just after being dried by the dryer 72 , this is advantageous in appropriately correcting the curl of the piece of paper web P 2 .
  • the piece of paper web P 2 heated by dry air from the dryer 72 is very likely to be deformed. Therefore, if the piece of paper web P 2 in this state is decurled by the decurling unit U 7 , a higher decurling effect can be obtained than when the piece of paper web P 2 is not heated.
  • the decurling unit U 7 corrects the curl of each piece of the paper web P 2 by moving the decurling roller 82 to the decurling position and subjecting the piece of paper web P 2 to the decurling process.
  • the decurling unit U 7 conveys the paper sheet P 1 to the paper output tray 6 without subjecting it to the decurling process by moving the decurling roller 82 to the conveyance position. In this manner, the decurling unit U 7 selects whether or not to perform the decurling process depending upon the type of printing paper P 1 or P 2 being conveyed.
  • the decurling unit U 7 can appropriately handle a piece of rolled printing paper P 2 and a sheet of printing paper P 1 .
  • the piece of printing paper P 1 or P 2 is accelerated in the paper output direction by changing the decurling roller 82 of the decurling unit U 7 from the decurling position or the conveyance position to the pinch release position. This stabilizes the placement point of pieces of printing paper P 1 or P 2 on the paper output tray 5 .
  • FIG. 12 is a perspective view showing the structure of an inkjet printer according to a second example embodiment.
  • This example embodiment is different from the first example embodiment in that a conveyance unit 100 and an collection unit 110 are provided instead of the paper output tray 5 . Therefore, the same parts are identified by the same reference numerals as in the first example embodiment and a description is given only of different points.
  • the inkjet printer A includes a printer body 90 , a conveyance unit 100 disposed downstream of the printer body 90 , and a collection unit 110 disposed downstream of the conveyance unit 100 in the direction of paper conveyance.
  • the printer body 90 has substantially the same structure as described in the first example embodiment and, therefore, a description thereof is not given.
  • the conveyance unit 100 constitutes a paper placement part for receiving pieces of printing paper P 1 or P 2 output through the paper output port 47 in the housing 6 of the printer body 90 and placing them thereon and includes a conveying belt 101 for conveying pieces of printing paper P 1 or P 2 placed thereon downstream like a belt conveyer, a drive roller 102 for driving the conveying belt 101 and a large-sized tray 104 disposed upstream of the conveying belt 101 in the direction of paper conveyance. “Downstream of the conveyance unit 100 in the direction of paper conveyance” means to the right of the housing 6 (towards the collection unit 110 ).
  • the region of the conveying belt 101 corresponding to the paper output port 47 in the housing 6 is set to a placement region R where a piece of printing paper P 1 or P 2 just after being output through the paper output port 47 is received (strictly, this placement region R corresponds to the paper placement part).
  • the placement region R of the conveying belt 101 is, like the paper output tray 5 in the first example embodiment, also disposed below the terminal end of the paper conveyance path provided in the interior of the housing 6 of the printer body 90 (below the paper output tray 47 ).
  • the conveyance unit 100 is configured to control the movement of the conveying belt 101 to allow the already placed piece of printing paper P 1 or P 2 to leave the placement region R before the next piece of printing paper P 1 or P 2 to be output through the paper output port 47 in the housing 6 is placed on the placement region R.
  • pieces of printing paper P 1 or P 2 can be prevented from being stacked one after another, which prevents inconveniences, such as a phenomenon that ink on each printed piece of printing paper P 1 or P 2 is not uniformly dried to cause color shading of printed images.
  • the control on the movement of the conveying belt 101 is implemented by adjusting the speed of paper conveyance so that when the piece of printing paper P 1 or P 2 already placed on the placement region R leaves the placement region R, the next piece of printing paper P 1 or P 2 is output. Furthermore, instead of continuing to drive the conveying belt 101 at a constant speed, pieces of printing paper P 1 or P 2 may be intermittently conveyed so that the piece of printing paper P 1 or P 2 already placed on the placement region R can be conveyed at a stroke to the outside of the placement region R when the next piece of printing paper P 1 or P 2 is conveyed.
  • the conveyance unit 100 is controlled to convey the piece of printing paper P 1 or P 2 to the collection unit 110 disposed downstream thereof in the direction of paper conveyance.
  • the conveyance unit 100 is controlled to convey the piece of printing paper P 1 or P 2 to the large-sized tray 104 disposed upstream thereof in the direction of paper conveyance. In this manner, by changing the direction of paper conveyance according to the size of piece of printing paper P 1 or P 2 , pieces of printing paper P 1 or P 2 can be conveyed to appropriate accommodation sites for each paper size.
  • the collection unit 110 is disposed downstream of the conveyance unit 100 in the direction of paper conveyance and configured to collect pieces of printing paper P 1 or P 2 conveyed from the conveyance unit 100 .
  • the collection unit 110 includes a collecting body 111 , a plurality of collecting plates 112 , arranged at spaced intervals in the collecting body 111 , for placing pieces of printing paper P 1 or P 2 conveyed from the conveyance unit 100 thereon, and a collecting belt 113 for conveying the plurality of collecting plates 112 towards the rear of the housing 6 like a belt conveyer.
  • Each collecting plate 112 stands by at a transfer point for pieces of printing paper P 1 or P 2 located downstream of the conveying belt 101 so that the plate surface is horizontal and substantially flush with the surface of the conveying belt 101 . Then, when a predetermined number of pieces of printing paper P 1 or P 2 are stacked on the collecting plate 112 according to the print order, the collecting plate 112 is conveyed to the rear of the housing 6 by the collecting belt 113 before the next piece of printing paper P 1 or P 2 is conveyed according to the next print order. Then, the surface of the collecting plate 112 having been held horizontal stands up in the course of conveyance of the collecting belt 113 to function as a partition plate for partitioning pieces of printing paper P 1 or P 2 for each print order.
  • the conveyance unit 100 controls the movement of the conveying belt 101 so that when the piece of printing paper P 1 or P 2 is transferred from the conveying belt 101 to each collecting plate 112 of the collection unit 110 , the speed of conveyance of the piece of printing paper P 1 or P 2 reaches a predetermined speed or more. Specifically, a clearance is left between the conveying belt 101 and the collecting plate 112 facing it. Therefore, if the speed of paper conveyance of the conveying belt 101 is too late, the edge of the piece of printing paper P 1 or P 2 may drop in the clearance, leading to failure of smooth paper transfer or failure of paper transfer. To avoid this, the speed of paper conveyance of the conveying belt 101 is controlled to be a speed at which the piece of printing paper P 1 or P 2 can be stably transferred, thereby ensuring the transfer of the piece of printing paper P 1 or P 2 .
  • a decurling unit U 7 (a roller pair composed of a conveyance roller 81 and a decurling roller 82 ) is disposed at the terminal end of the paper conveyance path provided in the interior of the housing 6 of the printer body 90 .
  • the decurling unit U 7 outputs pieces of printing paper P 1 or P 2 through the paper output port 47 in the housing 6 to the placement region R of the conveying belt 101 . If, as in this case, the paper placement part is a conveying belt 101 , the level difference between the paper placement part and the terminal end of the paper conveyance path (the paper output port 47 ) is generally larger than where the paper placement part is a paper output tray 5 .
  • this second example embodiment is, like the first example embodiment, also configured so that when the trailing edge of the piece of printing paper P 1 or P 2 reaches between the free roller 80 and the conveyance roller 81 , the decurling roller 82 of the decurling unit U 7 moves from the decurling position or the conveyance position to the pinch release position and the rotational driving speed of the conveyance roller 81 and the decurling roller 82 is changed to their higher side.
  • the piece of printing paper P 1 or P 2 can be accelerated in the paper output direction to stabilize the placement point of pieces of printing paper P 1 or P 2 on the placement region R.
  • the transfer of pieces of printing paper P 1 or P 2 from the conveying belt 101 to each collecting plate 112 of the collection unit 110 can be certainly carried out.
  • the second position is the pinch release position where the pinch of the printing paper P 1 or P 2 between the conveyance roller 81 and the decurling roller 82 is released
  • the second position may be anywhere closer to the paper output side than the first position unless the piece of printing paper P 1 or P 2 can be accelerated in the paper output direction by the movement of the decurling roller 82 from the first position to the second position or may be a location where the piece of printing paper P 1 or P 2 can be pinched and conveyed.
  • the rotational driving speed of the conveyance roller 81 and the decurling roller 82 may not necessarily be changed to higher side.
  • the present invention is not limited to the paper output mechanism disposed in the interior of the printer body 90 of the inkjet printer A and can be applied to any paper output mechanism, disposed in a device including a paper conveyance path, for outputting paper to the outside of the device. Furthermore, the present invention is not limited to paper output mechanisms for outputting paper to the outside and can be also applied, for example, to a paper output mechanism for outputting paper from the terminal end of a paper conveyance path in a first processing section in the interior of the device to a paper placement part of a second processing section disposed below the terminal end of the paper conveyance path in the first processing section.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Ink Jet (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US12/360,417 2008-01-29 2009-01-27 Paper output mechanism Abandoned US20090189337A1 (en)

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JP2008018213A JP2009179415A (ja) 2008-01-29 2008-01-29 ペーパー排出機構

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JP5849521B2 (ja) * 2011-08-18 2016-01-27 セイコーエプソン株式会社 記録装置
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