JP5231367B2 - Paper collection device - Google Patents

Description

  The present invention relates to a sheet collecting apparatus, and more particularly to a sheet collecting apparatus that collects printed sheets that are continuously discharged from a printing press.

  In general, double-sided printing is performed separately on the front side and the back side of the paper. At this time, if the back surface is printed immediately after the front surface is printed, there is a problem that the size and position of the image printed on the front surface and the back surface of the paper are shifted. In other words, since the paper expands and contracts depending on the moisture content, if the back side is printed immediately after printing the front side, the back side is printed while the paper is stretched by the moisture of the ink. Deviation occurs in the size and position of the image printed on the back side.

  In order to solve such problems, in Patent Document 1, after printing the front side, the paper is discharged onto a discharge tray outside the apparatus, dried on the discharge tray, and then printed on the back side. It has been proposed.

  Further, Patent Documents 2 and 3 are technologies related to paper stacking of stacked sheets (stacked and stacked sheets), while reciprocating the nozzle in a direction parallel to the stacking direction of the stacked sheets, A technique for injecting compressed air toward an end surface of a sheet is disclosed. By injecting compressed air onto the end surfaces of the stacked sheets in this way, air can be introduced between the stacked sheets. Seasoning (image area (ink applied) is applied to the printed sheets. Area) and non-image area (area to which ink is not applied) is also effective.

JP 2001-63019 A Japanese Patent Laid-Open No. 8-40586 Japanese Patent Laid-Open No. 10-297813

  The method of Patent Document 1 is effective when processing sheets one by one, but has a drawback that a sufficient drying effect cannot be obtained when sheets are stacked on a sheet discharge tray.

  On the other hand, in the techniques described in Patent Documents 2 and 3, the printed sheets must be collected and collected once and brought into a dedicated device (paper making machine) for seasoning (in this case, paper making). There is a drawback that it takes time and effort.

  The present invention has been made in view of such circumstances, and provides a paper collection device that can stack and collect printed sheets that are continuously discharged from a printing press and season the collected sheets. Objective.

In order to achieve the above object, the invention according to claim 1 is a paper collection device for collecting printed paper continuously discharged from a paper discharge port of a printing press, and is provided in multiple stages in the vertical direction, A stack base for stacking sheets discharged from the discharge outlet, and a collection unit for collecting each sheet discharged from the discharge outlet by individually raising and lowering each stack base in the stacking direction of the sheets For the seasoning section for seasoning the subsequent paper, the transport means for transporting to the storage section for storing the paper after seasoning, and the stack base transferred to the seasoning section, air is blown to the paper stacked on the stack base a blower means for the transfer means is controlled to a and a lift control means for individually controlling the vertical movement of the stack table, the lift control means, in the recovery unit, a discharge from the discharge outlet The stacking table is lowered at a predetermined speed so that the stacked sheets are sequentially stacked on the stacking table, and when a predetermined number of sheets are stacked on the stacking table, the stacking table is lowered and the seasoning unit The air blown from the blowing unit to the end surface of the paper stacked on the stacking base, seasoning the paper for a predetermined time, and after the seasoning is completed, the stacking base is lowered, and the blowing means When the stack base in the seasoning part is transferred from the seasoning part to the storage part, the stack base in the recovery part is transferred from the recovery part to the seasoning. When the stack base in the recovery section is transferred from the recovery section to the seasoning section, a new stack base is When the stack base is transferred from the recovery section to the seasoning section, the paper stacked on the stack base located at the lower stage of the stack base is transferred from the recovery section to the seasoning section. The paper collecting device is characterized in that the bulk is compressed by being pushed by the stacked base .

According to the present invention, the sheets discharged from the sheet discharge outlet are sequentially stacked on the stack base and collected. When the prescribed number of sheets are stacked on the stacking table, the stacking table is transferred to the seasoning unit. When the stacking table is transferred to the seasoning unit, the air blown from the blowing unit is applied to the end surface of the paper stacked on the stacking table. As a result, the sheets stacked on the stacking table are seasoned. Seasoning is performed continuously for a predetermined time. When seasoning is completed, the stacking table is transferred to a storage unit that does not receive air from the air blowing means. Thereby, the paper after seasoning can be stored without making it bulky. In other words, if air is blown to the stacked sheets, the blown air enters between the sheets and the volume of the sheets increases, but the sheets are made bulky by being transferred to a storage unit that is not subjected to blowing by the blowing means. Can be stored without As described above, according to the present invention, sheets stacked and collected can be seasoned on the spot and stored without being bulky.
According to the present invention, when a specified number of sheets are stacked on the stacking table and transferred to the seasoning unit, a new stacking table is set in the collecting unit. As a result, the sheets can be continuously collected. In addition, the stack base that has been previously transferred to the seasoning unit is transferred to a storage unit that does not receive the blowing from the blowing unit. Thereby, the paper can be stored without being bulky. In other words, if air is blown to the stacked sheets, the blown air enters between the sheets and the volume of the sheets increases, but the sheets are made bulky by being transferred to a storage unit that is not subjected to blowing by the blowing means. Can be stored without
According to the present invention, when a stack base that collects a specified number of sheets in the recovery section is transferred from the recovery section to the seasoning section, the sheets stacked on the stack base located at the lower stage of the stack base, that is, seasoning The sheet thus pushed is pushed onto the stack base that has been transferred from the collection unit to the seasoning unit, and the bulk is compressed. As a result, the seasoned paper can be stored without being bulky. That is, by pushing the paper with the upper stacking base, the air between the upper and lower papers can be efficiently removed, and the paper can be compressed and stored. Moreover, this makes it possible to make the height dimension of the apparatus compact.

The invention according to claim 2, in order to achieve the above object, in claim 1, further comprising a second blowing means for blowing air toward the sheet to be sequentially stacked on the stack table by the recovery unit Provided is a paper collecting apparatus.

  According to the present invention, air is blown from the second blowing means toward the sheets sequentially stacked on the stacking base in the collecting unit. Thereby, the drying of the ink applied to the paper can be promoted, and the stacked paper can be prevented from sticking with the ink.

The invention according to claim 3, in order to achieve the object, the air volume of the second blowing means, the sheet collecting apparatus according to claim 2, characterized in that it is set larger than the air volume of the blower means I will provide a.

  According to the present invention, the air volume of the second air blowing unit is set larger than the air volume of the air blowing unit. Accordingly, it is possible to season the paper efficiently while promoting the drying of the ink.

The invention according to claim 4, in order to achieve the object, the air blowing means, claims 1 to 3, characterized in that it is composed of a plurality of fans arranged in tandem in the stack direction of the paper A paper collecting device according to any one of the above is provided.

  According to the present invention, the air blowing means is composed of a plurality of fans arranged in tandem in the sheet stacking direction. Thereby, a ventilation means can be made compact.

According to a fifth aspect of the present invention, in order to achieve the above object, the air blowing means and the second air blowing means are configured by a plurality of fans arranged in tandem in the stacking direction of the paper, depending on the number of sheets to be collected in the stack table, the paper according to claim 2 or 3, characterized in that it is divided into a fan constituting the fan and the second blowing means constituting said blowing means A collection device is provided.

  According to the present invention, the air blowing means and the second air blowing means are configured by a plurality of fans arranged in tandem in the sheet stacking direction, and the air blowing means is configured according to the number of sheets collected on the stack base. And a fan constituting the second air blowing means. As a result, stacking can be performed while changing the prescribed number, and the apparatus configuration can be made compact by narrowing the interval between the collection unit and the seasoning unit.

The invention according to claim 6 is characterized in that, in order to achieve the object, the individual fans constituting the air blowing means are set so that the air volume increases stepwise from the upper stage toward the lower stage. A paper collecting device according to claim 4 is provided.

According to the present invention, the air volume of air blown from the individual fans constituting the air blowing means is set so that the air volume gradually increases from the upper stage toward the lower stage. As a result, it is possible to sufficiently inject the air into the inner side of the sheets positioned on the lower side of the stacked sheets, and seasoning can be performed more efficiently.

According to a seventh aspect of the present invention, in order to achieve the above object, in a paper collecting apparatus that collects printed paper continuously discharged from a paper discharge port of a printing press, the paper is discharged from the paper discharge port. A stacking table on which the stacked sheets are stacked, a collecting unit that raises and lowers the stacking table in the sheet stacking direction, collects the sheet discharged from the sheet discharge port, a seasoning unit that seasons the collected sheet, and seasoning Conveying means for transporting a subsequent sheet to a storage unit, and a plurality of fans arranged in tandem in the stacking direction of the sheet, and with respect to the stack table transferred to the seasoning unit, A blower for blowing air on the paper stacked on the stacking base, a detecting means for detecting an area where the paper is present with respect to the stacking base transferred to the seasoning unit, and the transporting means are controlled. And elevating control means for controlling elevating and lowering of the stack base, and air blowing control means for controlling driving of individual fans constituting the air blowing means. The stack table is lowered at a predetermined speed so that the sheets discharged from the paper mouth are sequentially stacked on the stack table, and when a predetermined number of sheets are stacked on the stack table, the stack table is lowered. The paper is transported to the seasoning unit, and the air blown from the blowing means is applied to the end surface of the paper stacked on the stacking base to season the paper for a predetermined time. After the seasoning is completed, the stacking base is lowered. Then, the air is transferred to the storage unit that does not receive the air from the air blowing means, and the air blowing control means has the paper based on the detection result of the detecting means. Providing a sheet collecting apparatus characterized by driving only fan in the region.

According to the present invention, the sheets discharged from the sheet discharge outlet are sequentially stacked on the stack base and collected. When the prescribed number of sheets are stacked on the stacking table, the stacking table is transferred to the seasoning unit. When the stacking table is transferred to the seasoning unit, the air blown from the blowing unit is applied to the end surface of the paper stacked on the stacking table. As a result, the sheets stacked on the stacking table are seasoned. Seasoning is performed continuously for a predetermined time. When seasoning is completed, the stacking table is transferred to a storage unit that does not receive air from the air blowing means. Thereby, the paper after seasoning can be stored without making it bulky. In other words, if air is blown to the stacked sheets, the blown air enters between the sheets and the volume of the sheets increases, but the sheets are made bulky by being transferred to a storage unit that is not subjected to blowing by the blowing means. Can be stored without As described above, according to the present invention, sheets stacked and collected can be seasoned on the spot and stored without being bulky.
Further, according to the present invention, the air blowing means is composed of a plurality of fans arranged in tandem in the paper stacking direction. Thereby, a ventilation means can be made compact.
According to the present invention, the area where the paper is present is detected by the detecting unit with respect to the stacking table transferred to the seasoning unit. Then, based on the detection result by the detection means, only the fan in the area where the paper exists is driven. Thus, the fan can be driven without waste, and power saving can be achieved.
The invention according to claim 8 is characterized in that, in order to achieve the object, the individual fans constituting the air blowing means are set so that the air volume increases stepwise from the upper stage toward the lower stage. A paper collecting apparatus according to claim 7 is provided.
According to the present invention, the detection unit detects the area where the sheet is present with respect to the stacking table transferred to the seasoning unit. Then, based on the detection result by the detection means, only the fan in the area where the paper exists is driven. Thus, the fan can be driven without waste, and power saving can be achieved.
In order to achieve the above object, the invention according to claim 9 is provided with second air blowing means for blowing air toward the sheets sequentially stacked on the stacking base in the collecting unit. A paper collecting device according to claim 8 is provided.
According to the present invention, air is blown from the second blowing means toward the sheets sequentially stacked on the stacking base in the collecting unit. Thereby, the drying of the ink applied to the paper can be promoted, and the stacked paper can be prevented from sticking with the ink.
The invention according to claim 10 is characterized in that, in order to achieve the object, the air volume of the second air blowing means is set larger than the air volume of the air blowing means. I will provide a.
According to the present invention, the air volume of the second air blowing unit is set larger than the air volume of the air blowing unit. Accordingly, it is possible to season the paper efficiently while promoting the drying of the ink.
According to an eleventh aspect of the present invention, in order to achieve the above object, the second air blowing means includes a plurality of fans arranged in a row in the stacking direction of the paper together with the air blowing means, 11. The paper according to claim 9, wherein the paper is classified into a fan constituting the air blowing means and a fan constituting the second air blowing means according to the number of papers collected on the stacking base. A collection device is provided.
According to the present invention, the air blowing means and the second air blowing means are configured by a plurality of fans arranged in tandem in the sheet stacking direction, and the air blowing means is configured according to the number of sheets collected on the stack base. And a fan constituting the second air blowing means. As a result, stacking can be performed while changing the prescribed number, and the apparatus configuration can be made compact by narrowing the interval between the collection unit and the seasoning unit.

Invention, in order to achieve the above object, the prescribed number of sheets, paper according to any one of claims 1 to 11, characterized in that it is set according to the type of the paper according to claim 12 A collection device is provided.

  According to the present invention, the prescribed number of sheets stacked on the stacking base is set according to the type of the sheet. Thereby, seasoning can be performed more appropriately according to the type of paper.

According to a thirteenth aspect of the invention, in order to achieve the object, the printing machine prints an image on the paper by an ink jet method, and the specified number of sheets is set according to an ink amount of the image printed on the paper. A paper collecting device according to any one of claims 1 to 12 is provided.

  According to the present invention, the specified number of sheets stacked on the stacking base is set according to the ink amount of the image printed on the sheets. Thereby, seasoning can be performed more appropriately.

  The present invention has been made in view of such circumstances, and can stack and collect printed sheets that are continuously discharged from a printing press, and season the collected sheets.

Overall configuration of inkjet printer Side view showing schematic configuration of paper collecting device Rear view showing schematic configuration of paper collecting device Front view of stacker Side sectional view of the stacker Cross-sectional view of the stacker Side view of stack base Front view of blower unit Explanatory drawing of paper collecting operation by paper collecting device (first method) Explanatory drawing of paper collecting operation by paper collecting device (first method) Explanatory drawing of paper collecting operation by paper collecting device (first method) Explanatory drawing of paper collecting operation by paper collecting device (first method) Explanatory drawing of paper collecting operation by paper collecting device (first method) Explanatory drawing of paper collecting operation by paper collecting device (first method) Explanatory drawing of paper collecting operation by paper collecting device (second method) Explanatory drawing of paper collecting operation by paper collecting device (second method) Explanatory drawing of paper collecting operation by paper collecting device (second method) Explanatory drawing of paper collecting operation by paper collecting device (second method) Explanatory drawing of paper collecting operation by paper collecting device (second method) Side view of another embodiment of stack base Front view of another embodiment of the blower unit Side surface partial sectional view of another embodiment of the paper collecting apparatus Explanatory drawing of other embodiments of the seasoning method Explanatory drawing of the method to detect the range where paper exists

  Hereinafter, a preferred embodiment of a paper collecting apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

<Inkjet printer configuration>
〔Device configuration〕
FIG. 1 is an overall configuration diagram of an ink jet printing machine in which a paper collecting apparatus according to the present invention is incorporated.

  The ink jet printer 10 ejects four colors of ink of cyan (C), magenta (M), yellow (Y), and black (K) onto a sheet (sheet) 14 by an ink jet method to form a color image. A printing machine that performs printing, a paper feeding unit 20 that feeds paper (sheets) 14, a processing liquid application unit 30 that applies a predetermined processing liquid to the printing surface of the paper 14, and a printing surface of the paper 14 CMYK color inks are ejected from the CMYK color ink jet heads to draw a color image, a drawing unit 40 for drying the ink deposited on the paper 14, and an image drawn on the paper 14. The fixing unit 60 fixes the paper and the collecting unit 70 collects the printed paper. The paper collection device 100 is incorporated in the collection unit 70 and collects the printed paper 14 by stacking it on a stacker.

  The processing liquid application unit 30, the drawing unit 40, the drying unit 50, and the fixing unit 60 are provided with pressure drums (conveying drums) 34, 44, 54, and 64 as conveying units, respectively. 14 is wound around the peripheral surface of the pressure drums 34, 44, 54, and 64, and is conveyed while rotating each part of the treatment liquid applying unit 30, the drawing unit 40, the drying unit 50, and the fixing unit 60. The

  Further, between the paper feeding unit 20 and the processing liquid application unit 30, between the processing liquid application unit 30 and the drawing unit 40, between the drawing unit 40 and the drying unit 50, and between the drying unit 50 and the fixing unit 60. Are provided with transfer cylinders (conveying drums) 32, 42, 52, 62 as conveying means, respectively, and the paper 14 is wound around the peripheral surfaces of the transfer cylinders 32, 42, 52, 62, It is conveyed while rotating between each part.

  The impression cylinders 34, 44, 54, 64 and the transfer cylinders 32, 42, 52, 62 are alternately arranged, and are driven by motors (not shown) to rotate in opposite directions. That is, the impression cylinders 34, 44, 54, and 64 rotate in the counterclockwise direction in FIG. 1, and the transfer cylinders 32, 42, 52, and 62 rotate in the clockwise direction in FIG.

  The impression cylinders 34, 44, 54, 66 and the transfer cylinders 32, 42, 52, 62 are each provided with a gripper for gripping the leading edge of the paper 14 on the peripheral surface thereof. The paper 14 is conveyed while its leading end is gripped by this gripper. The grippers are disposed at two peripheral surfaces (positions 180 degrees apart) of the impression cylinders 34, 44, 54, and 64 and the transfer cylinders 32, 42, 52, and 62, and sequentially feed the sheets 14 that are continuously supplied. Grip to. The impression cylinders 34, 44, 54, 64 and the transfer cylinders 32, 42, 52, 62 deliver and receive the paper 14 while synchronizing the positions of the grippers.

  The sheet 14 is wound around the peripheral surface of the impression cylinders 34, 44, 54, 64 so that the printing surface is on the outside, and against the transfer cylinders 32, 42, 52, 62. Is wound around the circumferential surface so that the back side of the printed surface is on the outside.

  The paper 14 fed from the paper feeding unit 20 is transferred to the pressure drum 34 of the treatment liquid application unit 30 via the transfer drum 32 and drawn from the pressure drum 34 of the treatment liquid application unit 30 via the transfer drum 42. Passed to the impression cylinder 44 of the section 40. Then, the image is transferred from the pressure drum 44 of the drawing unit 40 to the pressure drum 54 of the drying unit 50 via the transfer drum 52, and from the pressure drum 54 of the drying unit 50 to the pressure drum 64 of the fixing unit 60 via the transfer drum 62. Delivered. Then, it is transferred from the impression cylinder 64 of the fixing unit 60 to the recovery unit 70. In this series of conveyance processes, the paper 14 passes through the processing liquid application unit 30, the drawing unit 40, the drying unit 50, and the fixing unit 60, and is subjected to necessary processing in each unit to form an image on the printing surface.

  Hereinafter, the configuration of each unit (the paper feeding unit 20, the treatment liquid applying unit 30, the drawing unit 40, the drying unit 50, the fixing unit 60, and the collecting unit 70) of the inkjet printer 10 of the present embodiment will be described in detail.

<Paper Feeder>
The paper feeding unit 20 includes a paper feeding device 22 and a paper feeding tray 24, and continuously feeds a sheet (for example, coated paper) 14 one by one.

  The paper feeding device 22 feeds the paper 14 stored in a stacked state in a stacker (not shown) one by one from the upper side to the paper feeding tray 24 one by one.

  The sheet feed tray 24 sends out the sheets 14 fed one by one from the sheet feeder 22 toward the transfer cylinder 32.

  The paper 14 delivered from the paper feed tray 24 is transferred to the pressure drum 34 of the processing liquid application unit 30 via the transfer drum 32.

<Processing liquid application part>
The processing liquid application unit 30 applies a predetermined processing liquid to the printing surface of the paper 14. The treatment liquid application unit 30 includes a pressure drum (treatment liquid drum) 34 that conveys the paper 14, and a treatment liquid application device 36 that applies a predetermined treatment liquid to the printing surface of the paper 14 conveyed by the treatment liquid drum 34. It is configured with.

  The treatment liquid drum 34 receives the paper 14 from the transfer cylinder 32 (holds and receives the leading edge of the paper 14 with a gripper), wraps around the peripheral surface, and rotates and conveys the paper 14. At this time, the processing liquid drum 34 receives the paper 14 from the transfer cylinder 32 with the printing surface of the paper 14 facing outward, and rotates and conveys the paper 14.

  The treatment liquid application device 36 applies a treatment liquid having a function of aggregating ink on the printing surface of the paper 14 that is rotated and conveyed by the treatment liquid drum 34. The processing liquid application device 36 is constituted by, for example, an application roller, and applies the processing liquid to the printing surface of the paper 14 by pressing and contacting the application roller with the processing liquid applied to the peripheral surface against the peripheral surface of the paper 14. (Apply).

  The treatment liquid is composed of a liquid having a function of causing the coloring material in the ink to aggregate by reacting with the ink applied by the drawing unit 40 in the subsequent stage. By applying such a treatment liquid in advance and ejecting ink, landing interference can be suppressed and high-quality printing can be performed.

  The treatment liquid application unit 30 is configured as described above. The sheet 14 transferred from the transfer cylinder 32 to the processing liquid drum 34 is applied with the processing liquid from the processing liquid applying device 36 to the printing surface in the process of being rotated and conveyed by the processing liquid drum 34. Then, the sheet 14 to which the processing liquid is applied is transferred from the processing liquid drum 34 to the transfer drum 42, and is transferred from the transfer drum 42 to the pressure drum 44 of the drawing unit 40.

<Drawing part>
The drawing unit 40 ejects ink of each color of C, M, Y, and K on the printing surface of the paper 14 to form a color image on the printing surface of the paper 14. The drawing unit 40 includes an impression cylinder (drawing drum) 44 that transports the paper 14 and ink jet heads 46C, 46M, 46Y, and 46K that eject ink of each color of C, M, Y, and K onto the paper 14. It is configured.

  The drawing drum 44 receives the paper 14 from the transfer cylinder 42 (holds and receives the leading edge of the paper 14 with a gripper), wraps around the peripheral surface, and rotates and conveys the paper 14. At this time, the drawing drum 44 receives the paper 14 from the transfer cylinder 42 with the printing surface of the paper 14 facing outward, and rotates and conveys the paper 14.

  When receiving the paper 14 from the processing liquid drum 34 of the processing liquid application unit 30, the transfer drum 42 receives the paper 14 from the processing liquid drum 34 with the back side of the printing surface facing outside, and rotates and conveys the paper 14. To do.

  The four inkjet heads 46C, 46M, 46Y, and 46K are arranged around the drawing drum 44 at regular intervals, and discharge ink droplets of the corresponding colors toward the drawing drum 44, respectively. The inkjet heads 46C, 46M, 46Y, and 46K are constituted by line heads corresponding to the paper width, and eject ink droplets from the nozzle row formed on the nozzle surface toward the drawing drum 44.

  The drawing unit 40 is configured as described above. The paper 14 transferred from the processing liquid drum 34 to the drawing drum 44 via the transfer drum 42 passes under the inkjet heads 46C, 46M, 46Y, 46K in the process of being rotated and conveyed by the drawing drum 44, When passing, ink of each color of C, M, Y, K is ejected from the inkjet heads 46C, 46M, 46Y, 46K onto the printing surface, and a color image is recorded on the printing surface.

  The ink jet printer 10 of this example uses water-based ink in which a thermoplastic resin is dispersed in ink for each color.

  The paper 14 on which the ink of each ink color of C, M, Y, K is ejected from each of the inkjet heads 46C, 46M, 46Y, 46K and the image is recorded on the printing surface is transferred from the drawing drum 44 to the transfer drum 52. It is delivered and delivered from the transfer cylinder 52 to the impression cylinder 54 of the drying unit 50.

<Dry section>
The drying unit 50 dries the paper 14 on which an image is recorded. The drying unit 50 includes a pressure drum (drying drum) 54 that transports the paper 14 and a drying device 56 that performs a drying process on the paper 14 transported by the drying drum 54.

  The drying drum 54 receives the paper 14 from the transfer drum 52 (holds and receives the front end of the paper 14 with a gripper), wraps around the peripheral surface, and rotates and conveys the paper 14. At this time, the drying drum 54 receives the paper 14 from the transfer cylinder 52 with the printing surface of the paper 14 facing outside, and rotates and conveys the paper 14.

  The drying device 56 performs a process of evaporating the liquid component present on the paper. That is, when ink is ejected onto the paper 14 by the drawing unit 40, the liquid component of the ink and the liquid component of the processing liquid separated by the aggregation reaction between the processing liquid and the ink remain on the paper. A process of evaporating and removing the liquid component remaining on the paper is performed. The drying device 56 evaporates and removes the liquid component present on the paper by blowing warm air toward the paper 14 conveyed by the drying drum 54.

  The drying unit 50 is configured as described above. The paper 14 transferred from the drawing drum 44 to the drying drum 54 via the transfer drum 52 is dried by blowing hot air from the drying device 56 in the course of conveyance by the drying drum 54. The sheet 14 that has passed through the drying device 56 is transferred from the drying drum 54 to the transfer drum 62 and is conveyed to the fixing unit 60.

<Fixing part>
The fixing unit 60 heats and presses the paper 14 to fix the image drawn on the printing surface. The fixing unit 60 includes a pressure drum (fixing drum) 64 that conveys the paper 14, and a heat roller 66 that heats and presses the paper 14 conveyed by the fixing drum 64.

  The fixing drum 64 receives the sheet 14 from the transfer drum 62 (holds and receives the leading end of the sheet 14 with a gripper), wraps around the peripheral surface, and rotates and conveys the sheet 14. At this time, the fixing drum 64 receives the paper 14 from the transfer cylinder 62 with the printing surface of the paper 14 facing outward, and rotates and conveys the paper 14.

  The heat roller 66 heats and pressurizes the ink dried by the drying unit 50, thereby welding the thermoplastic resin dispersed in the ink to form a film of the ink. At the same time, the cockle generated on the paper 14 is corrected. The heat roller 66 is formed corresponding to the paper width, and is heated to a predetermined temperature by a built-in heat source (for example, an infrared heater). The pressing means is not in contact with the peripheral surface of the fixing drum 64 with a predetermined pressing force.

  The fixing unit 60 is configured as described above. The paper 14 transferred from the transfer drum 62 to the fixing drum 64 is heated and pressed by the heat roller 66 being pressed against the printing surface in the process of being conveyed by the fixing drum 64. As a result, the thermoplastic resin dispersed in the ink is welded to form a film of the ink. At the same time, the cockle generated on the paper 14 is corrected.

  The paper 14 heated and pressed by the heat roller 66 is transferred from the fixing drum 64 to the collecting unit 70.

<Recovery Department>
The collection unit 70 collects the sheets 14 that have undergone a series of printing processes by stacking them on a stacker. The collection unit 70 receives the paper 14 fixed by the fixing unit 60 from the fixing drum 64, conveys the paper 14 through a predetermined conveyance path, and discharges the paper 14 from the paper discharge port 76, and the paper discharge conveyor 74. And a paper collection device 100 that collects the paper 14 discharged from the paper discharge port 76.

  The paper 14 fixed by the fixing unit 60 is transferred from the fixing drum 64 to the paper discharge conveyor 74. Then, the paper is conveyed through a predetermined conveyance path by the paper discharge conveyor 74 and discharged from the paper discharge port 76. The paper collecting apparatus 100 stacks and collects the paper 14 sequentially discharged from the paper discharge port 76. The paper collecting apparatus 100 will be described in detail later.

[Printing operation]
Next, the printing operation by the inkjet printer 10 will be described.

  The paper feeding device 22 feeds the paper 14 stored in a stacker (not shown) one by one to the paper feeding tray 24 in order from the top. The paper 14 fed to the paper feed tray 24 is transferred to the processing liquid drum 34 of the processing liquid applying unit 30 via the transfer cylinder 32.

  The paper 14 delivered to the processing liquid drum 34 is rotated and conveyed by the processing liquid drum 34, and the processing liquid is applied from the processing liquid applying device 36 during the conveyance process, and a layer of the processing liquid is formed on the printing surface. The The sheet 14 to which the processing liquid is applied is transferred from the processing liquid drum 34 to the drawing drum 44 of the drawing unit 40 through the transfer drum 42.

  The paper 14 delivered to the drawing drum 44 is rotated and conveyed by the drawing drum 44, and ink is ejected from the CMYK ink jet heads 46C, 46M, 46Y, and 46K in the conveyance process, and an image is recorded on the printing surface. Is done. The sheet 14 on which the image is recorded is transferred from the drawing drum 44 to the drying drum 54 of the drying unit 50 through the transfer drum 52.

  The paper 14 delivered to the drying drum 54 is rotated and conveyed by the drying drum 54, and warm air is blown from the drying device 56 in the conveyance process, and the ink applied to the printing surface is dried. The paper 14 on which the ink has been dried is transferred from the drying drum 54 to the fixing drum 64 through the transfer drum 62.

  The paper 14 delivered to the fixing drum 64 is rotated and conveyed by the fixing drum 64, and a heat roller 66 is pressed against the printing surface during the conveyance process to be heated and pressurized. Thereby, the image recorded on the printing surface is fixed. The sheet 14 on which the image has been fixed by the fixing unit 60 is delivered to the paper discharge conveyor 74 of the collection unit 70.

  The paper 14 delivered to the paper discharge conveyor 74 is conveyed by the paper discharge conveyor 74 and discharged from the paper discharge port 76. Then, the sheets 14 discharged from the discharge port 76 are collected while being sequentially stacked by the sheet collecting apparatus 100.

  As described above, in the above-described ink jet printer, the paper 14 fed from the paper feeding unit 20 is printed on the printing surface through a series of steps of processing liquid application → drawing → drying → fixing. The printed sheets 14 are sequentially collected by the sheet collecting apparatus 100 incorporated in the collecting unit 70.

《Paper collection device》
2 and 3 are a side view and a rear view, respectively, showing a schematic configuration of the paper collecting apparatus 100. FIG.

  As shown in the figure, the sheet collecting apparatus 100 mainly includes a stacker 110 that stacks the sheets 14, an elevating mechanism 140 that moves the stacker 110 up and down, and a pair that blows air toward the end surfaces of the sheets 14 stacked on the stacker 110. Fan units 160L and 160R.

<Stacker>
The stacker 110 for stacking the sheets 14 is formed in a rectangular parallelepiped shape having an open front surface (a surface disposed opposite to the sheet discharge port 76), and is formed vertically long along the stacking direction of the sheets 14. Yes. Specifically, in this example, as shown in FIG. 4 to FIG. 6, a bottom plate 112 that constitutes the bottom portion, a top plate 114 that constitutes the top portion, a back plate 118 that constitutes the back portion, The bottom plate 112 and the top plate 114 are connected by a back plate 118 and left and right rods 120L and 120R. The top plate 114 constituting the top portion and the back plate 118 constituting the back portion are both formed in a rectangular flat plate shape, and the back plate 118 constituting the back portion is formed in a rectangular plate shape that is long in the vertical direction. Is formed. Further, the pair of rods 120L and 120R constituting the left and right side portions are formed in a rectangular bar shape that is long in the vertical direction, and are arranged at regular intervals on the left and right side portions. In this way, by configuring the left and right side portions with a pair of rods 120L and 120R, the left and right side portions can be made air-permeable, and the paper 14 stacked on the stacker 110 is directed from the left and right side portions. It becomes possible to blow.

  In the stacker 110 configured as described above, the sheets 14 are taken from the opening on the front surface and stacked and accommodated therein. At this time, the sheets 14 are sequentially stacked and accommodated on a stack base 130 installed in the stacker 110. A plurality of stack bases 130 are prepared in the stacker 110, and are configured to be stacked in the stacker 110 so as to be installed in multiple stages.

  FIG. 7 is a side view showing the configuration of the stack base 130. As shown in the figure, the stack base 130 has extendable leg portions 132 at the four corners of the lower surface, and is configured to be movable up and down by extending and contracting the leg portions 132 (see FIG. ) Is a contracted state of the leg, and (b) is an extended state of the leg). The leg 132 has a so-called telescope structure, and is expanded and contracted by being driven by a driving means (not shown) (for example, a cylinder). The collection control device controls the drive of the drive means to control the raising and lowering of the stack base 130. In addition, the extension / contraction of the leg part 132 can also be configured to be performed manually.

  The stack table 130 configured as described above has the sheets 14 stacked and placed (stacked) on the upper surface thereof in sequence. The number of sheets 14 stacked on one stacking table 130 is determined in advance, and when a predetermined number of sheets 14 are stacked, a new stacking table 130 is additionally installed. At this time, the newly added stack base 130 can be installed without interfering with the sheets 14 stacked on the lower stack base 130 by extending the legs 132. That is, the paper 14 placed on the lower stacking base 130 is stored between the legs 132 of the newly added stacking base 130, so that the stacking can be performed without interfering with the paper 14. The stand 130 can be stacked and installed.

  Since the lowermost stack base 130 does not need to be moved up and down, a stack base without legs is used.

<Elevating mechanism>
As shown in FIG. 2, the lifting mechanism 140 that raises and lowers the stacker 110 mainly includes a guide mechanism 142 that guides the raising and lowering of the stacker 110 and a lifting device 144 that raises and lowers the stacker 110.

  The guide mechanism 142 mainly includes a guide rail 146 disposed perpendicular to the installation surface, and a pair of upper and lower sliders 148 that slide on the guide rail 146.

  The guide rail 146 is fixed to the back surface portion of the frame 102 that constitutes the housing of the collection apparatus 100, and is disposed perpendicular to the installation surface.

  The pair of sliders 148 are slidably provided on the guide rails 146, respectively.

  A pair of upper and lower slider connecting members 122 are formed on the back plate 118 of the stacker 110 so as to protrude horizontally rearward, and the pair of slider connecting plates 122 are connected to the sliders 148. As a result, the stacker 110 is guided so as to move up and down vertically along the guide rail 146 (it is guided so as to move up and down in parallel with the stacking direction).

  The elevating device 144 mainly includes a pair of timing belts 150 that travel in the vertical direction and a motor 152 that rotationally drives the timing belt 150.

  The pair of timing belts 150 are wound around a pair of timing pulleys 154A and 154B that are respectively disposed above and below. The timing pulley 154 </ b> A disposed on the lower side is connected to the output shaft of the motor 152, and the timing pulley 154 </ b> B disposed on the upper side is fixed to the back surface portion of the frame 102 that constitutes the housing of the collection device 100. It is rotatably supported by a bracket (not shown). The upper timing pulley 154B is disposed immediately above the lower timing pulley 154A, and the timing belt 150 is wound around the guide rail 146 by being wound around the pair of upper and lower timing pulleys 154A and 154B. Along the vertical direction (a direction parallel to the stack direction).

  The motor 152 is fixedly installed on the bottom surface of the frame 102 constituting the housing of the collection apparatus 100. As described above, the lower timing pulley 154A is connected to the output shaft. Therefore, when the motor 152 is driven, the lower timing pulley 154A rotates, and as a result, the timing belt 150 travels.

  A timing belt connecting member 124 is formed on the back plate 18 of the stacker 110 so as to protrude horizontally rearward. The timing belt connecting plate 124 is connected to the timing belt 150. Thus, when the motor 152 is driven to run the timing belt 150, the stacker 110 moves up and down vertically (in parallel with the stacking direction) in conjunction with the running of the timing belt 150.

  The driving of the motor 152 is controlled by a collection control device (not shown). The collection control device controls the driving of the motor 152 in accordance with a command from the control device that controls the overall operation of the inkjet printer 10.

  The lifting device 144 is configured as described above, and when the motor 152 is driven, the stacker 110 moves up and down vertically. As a result, the stack base 130 set on the stacker 110 also moves up and down vertically.

  Note that, as described above, the stack base 130 is raised and lowered individually by extending and contracting the leg portions 132. That is, the stack base 130 set on the stacker 110 can be moved up and down at the same direction and at the same speed by raising and lowering the stacker 110, and by extending and contracting the leg 132 of each stack base 130, Can be raised and lowered individually.

<Blower unit>
The pair of air blowing units 160L and 160R are arranged symmetrically with respect to the movement path of the stacker 110, and are arranged to face each other.

  FIG. 8 is a front view showing the configuration of one of the blower units 160L.

  As shown in the figure, the blower unit 160L is configured by arranging a plurality of fans F1 to F10 in parallel at a certain interval vertically and horizontally on a mounting panel 162 formed in a rectangular plate shape ( In this example, ten fans F1 to F10 are arranged in parallel in the vertical direction and three fans F1 to F10 in the horizontal direction.

  The mounting panel 162 is vertically supported by a support frame (not shown), and is installed so that the air blowing surface (the surface that blows air from each fan) faces the side surface of the stacker 110. (It is installed so as to be parallel to the end face of the paper 14 stacked on the stacker 110). A plurality of mounting holes 164 are formed in the mounting panel 162 at regular intervals in the vertical and horizontal directions, and the fans F1 to F10 are fitted into the mounting holes 164 and mounted to the mounting panel 162.

  One blower unit 160L is configured as described above. The other air blowing unit 160R is configured in the same manner. Therefore, the description of the configuration of the other air blowing unit 160R is omitted.

  As described above, the pair of blower units 160 </ b> L and 160 </ b> R are arranged to face each other with the movement path of the stacker 110 interposed therebetween. As shown in FIGS. 2 and 3, the pair of air blowing units 160 </ b> L and 160 </ b> R is installed in the middle of the movement path of the stacker 110, and the uppermost fan F <b> 10 is positioned almost directly below the paper discharge port 76. Installed.

  The driving of each fan F1 to F10 is controlled by a collection control device (not shown), and the collection control device drives each fan F1 to F10 in response to a command from the control device that controls the overall operation of the inkjet printer 10. To control. At this time, the recovery control device controls driving of the fans F1 to F10 in units of stages, and controls the fans belonging to the same stage to be driven at the same timing and the same air volume. In the following description, the fan F1 positioned at the top of each row is the first fan F1, the fan F2 positioned at the second level is the second fan F2,..., The fan F10 positioned at the 10th level (bottom level). Is referred to as a tenth fan F10, and the fans belonging to the same stage will be described as performing the same operation.

<Paper collection operation>
Next, the collecting operation of the printed paper 14 by the paper collecting apparatus 100 of the present embodiment configured as described above will be described.

<First method>
As described above, in the inkjet printer 10 according to the present embodiment, the paper 14 is continuously fed from the paper feeding unit 20 and printing processing is continuously performed. Then, the continuously printed paper 14 is discharged from the paper discharge port 76 continuously. In the paper collecting apparatus 100, the paper 14 continuously discharged from the paper discharge port 76 is stacked on the stacker 110 and collected.

  FIG. 9A shows the state of the stacker 110 before starting printing. As shown in the figure, a stack base 130 is set in the stacker 110, and the stack base 130 is set so as to be positioned at a predetermined reference position. The reference position is set to a position where the paper 14 disposed horizontally from the paper discharge port 76 is placed on the stack table 130 as it is, and the upper surface of the stack table 130 is slightly below the paper discharge port 76. Set to the position located on the side.

  Here, the stack base 130 set in the stacker 110 is set without the leg portion 132.

  As described above, since the sheets 14 are stacked and collected on the stacker 110, the stacker 110 descends in conjunction with the sheet discharge.

  Here, if the printing speed is V [sheets / sec] and the paper thickness t [mm], the stacker 110 descends at a speed of Vt [mm / sec]. As a result, as shown in FIGS. 9B and 9C, the sheets 14 continuously discharged from the sheet discharge outlet 76 are sequentially stacked on the stack base 130.

  On the other hand, as described above, the fans F1, F2,... Constituting the blower units 160L, 160R are arranged at a certain interval in the vertical direction (= stack direction = moving direction of the stacker 110) below the discharge port 76. L are arranged in parallel (see FIG. 8).

  When the stacker 110 is lowered, the fans F1, F2,... Are driven in conjunction with the stacker 110, and air is blown from the fans F1, F2,. At this time, the fans F1, F2,... Are driven only by the fans in the area where the sheets 14 stacked on the stack base 130 exist (only the fans positioned above the stack base 130 on which the sheets 14 are stacked). Is driven.) That is, as shown in FIG. 9B, the stack base 130 descends in conjunction with the paper discharge, but first, only the uppermost first fan F1 is driven. After that, the stack base 130 reaches the installation position of the second fan F2 by continuing to descend in conjunction with the paper discharge, and therefore, as shown in FIG. 9C, the stack base 130 installs the second fan F2. When the position is reached, driving of the second fan F2 is started.

  In this way, whenever the stack base 130 reaches the fan installation position, a new fan is added and driven.

  Here, the air blow performed on the sheets 14 sequentially collected on the stack table 130 is performed for the purpose of drying the surface (printing surface) of the sheets 14 and preventing the sheets from sticking to each other. Is called. That is, since the sheets 14 are sequentially stacked and collected, it is performed to prevent the upper and lower sheets 14 from sticking with ink. Therefore, the air blowing here is performed by setting the air volume Q1 that can dry the surface of the paper 14 and prevent the papers from sticking to each other.

  Since the stacker 110 moves down at a constant speed, the position of the stack base 130 can be known by measuring the elapsed time from the start of lowering. Since each fan is fixedly installed, if the position of the stacker base 130 is known, the fan to be driven can be known. The collection control device controls driving of the fan in accordance with the moving speed Vt of the stacker 110 (set according to the printing speed V and the sheet thickness t).

  Now, as described above, the stacker 110 is lowered in conjunction with the paper discharge, whereby the paper 14 discharged from the paper discharge port 76 is sequentially collected on the stacking base 130. The stacker 110 is temporarily stopped when the stack base 130 is lowered by 2 L [mm] from the reference position and reaches between the second fan F2 and the third fan F3. At the same time, printing is also temporarily stopped, and blowing of the fans F1 and F2 is also temporarily stopped. That is, the stacker 110 temporarily stops the descent when the predetermined number X1 (= 2 L / t) of sheets 14 are collected on the stack base 130.

  When the descent of the stacker 110 stops, the operator of the inkjet printer 10 adds and sets a new stack base 130 on the stacker 110. That is, as shown in FIG. 10A, a new stack base 130 is placed and set on the stack base 130 previously set in the stacker 110.

  When a new stack base 130 is added and set, as shown in FIG. 10 (b), the stacker 110 is connected between the eighth fan F8 and the ninth fan F9. Descent until it reaches and stop. That is, it descends 8 L [mm] and stops. Then, when the first stage stacking table 130 is lowered to the position of the eighth fan F8 and stopped, the operator moves the newly installed second stage stacking table 130 as shown in FIG. 10B. The leg portion 132 is extended and set so that its upper surface is positioned at the reference position. As a result, the paper 14 discharged from the paper discharge port 76 can be collected on the newly set second stack table 130 and the first stack table 130 and the second stack table 130 can be collected. A sufficient interval (H1 = 8L) is ensured between the two. Then, when the sheet 14 discharged from the discharge port 76 can be collected by the newly set second stacking base 130 as described above, the operation of the apparatus is restarted.

  First, as shown in FIG. 10 (c), among the fans F1 to F10 constituting the blowing units 160L and 160R, the first fan F1 to the eighth fan F8 are driven to blow with a predetermined air volume Q2. As a result, air is blown from each fan toward the end surface of the paper 14 stacked on the first stack base 130. The air sent toward the end face of the paper 14 enters between the papers 14 stacked on the first-stage stacking table 130, thereby seasoning the papers 14 stacked on the first-stage stacking table 130. Is done.

  In addition, since the ventilation here is for the purpose of seasoning, an air volume that is weaker than the air volume Q1 at the time of the recovery may be used. Therefore, the air volume Q2 of the air blown by each of the fans F1 to F8 is set to be weaker than the air volume Q1 of the air at the time of recovery (Q2 <Q1).

  Further, by blowing air from the fans F1 to F8 toward the end face of the stacked sheets 14, air enters between the upper and lower sheets 14 as shown in FIG. However, there is sufficient space between the first stack table 130 on which the paper 14 is placed and the second stack table 130 (the distance H1 between the upper and lower stack tables (= 8L)). )) Is ensured, there is no problem even if the bulk increases. Thereby, air can be sufficiently introduced between the sheets, and the stacked sheets 14 can be seasoned efficiently. In addition, the second stage stack base 130 is stacked on the first stage stack base 130 to prevent the paper 14 being seasoned from being blown off.

  When driving of the fans F <b> 1 to F <b> 8 is started and seasoning is started, printing is resumed at the same time, and the continuously printed paper 14 is discharged from the paper discharge port 76. At the same time, the stacker 110 starts to descend at a predetermined speed Vt [mm / sec].

  As a result, as shown in FIG. 11A, the sheets 14 continuously discharged from the sheet discharge outlet 76 are sequentially stacked on the newly added second stack base 130. Go. As shown in the figure, when the stacker 110 starts to descend, the air volume of the first fan F1 is switched from Q2 to Q1, and the ninth fan F9 is newly driven with the air volume Q2. As a result, air is applied to the sheets 14 stacked on the newly added second stack base 130 with the air volume Q1. As a result, the drying of the ink on the sheet 14 immediately after collection is promoted, and the sheets 14 are prevented from sticking to each other. Further, air is also blown to the paper 14 positioned below the paper 14 stacked on the first stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  As the printing progresses, the stacker 110 is also lowered, and when the newly added second stage stack base 130 reaches the installation position of the second fan F2 (= the first stage stack base 130 is the installation position of the tenth fan F10). ), The air volume of the second fan F2 is switched from Q2 to Q1, and the tenth fan F10 is newly driven with the air volume Q2. As a result, the air is blown from the tenth fan F10 to the paper 14 positioned below the paper 14 stacked on the first stacking base 130, and the paper 14 positioned below the stacked paper 14 is also sent. You will be able to season well enough.

  When the printing progresses further and the newly added second stack base 130 is lowered by 2 L [mm] from the reference position and reaches a position between the second fan F2 and the third fan F3, the stacker 110 The descent is paused. At the same time, printing is also temporarily stopped, and blowing of all the fans F1 to F10 is also temporarily stopped. That is, when the specified number X1 (= 2 L / t) of sheets 14 is collected on the newly added second stack base 130, the stacker 110 temporarily stops descending.

  When the descent of the stacker 110 stops, the operator of the inkjet printer 10 adds and sets a new stack base 130 on the stacker 110. That is, as shown in FIG. 11C, a new stack base 130 is placed on the second stack base 130 and set.

  When a new stack base 130 is added and set, the operator of the inkjet printing machine 10 contracts the leg 132 of the second stage stack base 130 as shown in FIG. While descending to between the fan F8 and the ninth fan F9, the leg portion 132 of the newly installed stack base 130 is extended and its upper surface is positioned at the reference position. As a result, the paper 14 discharged from the paper discharge port 76 can be collected on the newly set third-stage stack base 130, and the second-stage stack base and the third-stage stack base 130 can be collected. A sufficient interval (H1 = 8L) is secured between them.

  On the other hand, the paper 14 that has been stacked on the first-stage stack base 130 is pushed by the second-stage stack base 130 as the second-stage stack base 130 descends to compress the bulk (stack). The thickness of the entire sheet (the height of the entire sheet) is compressed.) At this time, the second stack base 130 is lowered to a position where the distance from the first stack base 130 becomes H2. This interval H2 is made substantially the same as the total thickness (2L = X1 × t) of the prescribed number X1 (= 2L / t) of sheets 14 (H2≈2L). Thereby, the paper 14 after seasoning can be stored without making it bulky. Further, the sheet 14 stacked on the second stack base 130 has a sufficient space (H1) with the stack base positioned on the upper stage, and is blown by the first fan F1 to the eighth fan F8. This enables seasoning.

  As described above, the newly set third-stage stack base 130 enables the collection of the paper 14 discharged from the paper discharge port 76, and the sheets 14 stacked on the second-stage stack base 130 can be collected. When seasoning becomes possible, the operation of the apparatus is restarted.

  First, as shown in FIG. 12 (b), among the fans F1 to F10 constituting the blower units 160L and 160R, the first fan F1 to the eighth fan F8 are driven to blow with a predetermined air volume Q2. As a result, air is blown from each fan toward the end surface of the paper 14 stacked on the second stacking base 130. The air sent toward the end face of the paper 14 enters between the papers 14 stacked on the second stage stacking table 130, thereby seasoning the papers 14 stacked on the second stage stacking table 130. Is done.

  Note that the ninth fan F9 and the tenth fan F10 on which the sheets 14 stacked on the first stacking base 130 are positioned are not driven at this time. Accordingly, air is not blown to the paper 14 stacked on the first stacking base 130.

  As described above, when driving of the fans F1 to F8 is started and seasoning for the sheets 14 stacked on the stacking stage 130 at the second stage is started, printing is also restarted at the same time. Then, the continuously printed paper 14 is discharged from the paper discharge port 76. At the same time, the stacker 110 starts to descend at a predetermined speed Vt [mm / sec].

  As a result, as shown in FIG. 12C, the sheets 14 continuously discharged from the sheet discharge port 76 are sequentially stacked on the newly added third stack base 130. Go. As shown in the figure, when the stacker 110 starts to descend, the air volume of the first fan F1 is switched from Q2 to Q1, and the ninth fan F9 is newly driven with the air volume Q2. As a result, air is applied to the sheets 14 stacked on the newly added third stacking base 130 with the air volume Q1. As a result, the drying of the ink on the sheet 14 immediately after collection is promoted, and the sheets 14 are prevented from sticking to each other. On the other hand, the air is also blown to the paper 14 positioned below the paper 14 stacked on the second stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  As printing progresses, the stacker 110 also descends, and when the newly added third stage stack base 130 reaches the installation position of the second fan F2 (= the second stage stack base 130 installs the tenth fan F10). When the position is reached, as shown in FIG. 13A, the air volume of the second fan F2 is switched from Q2 to Q1, and the tenth fan F10 is newly driven with the air volume Q2. As a result, the air is also blown to the paper 14 positioned below the paper 14 stacked on the second stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  When the printing progresses further and the newly added third stage stack base 130 is lowered by 2L [mm] from the reference position and reaches between the second fan F2 and the third fan F3, the stacker 110 is lowered. Paused. At the same time, printing is also temporarily stopped, and blowing of all the fans F1 to F10 is also temporarily stopped. That is, when the specified number X1 (= 2 L / t) of sheets 14 is collected on the newly added third stack base 130, the stacker 110 temporarily stops descending.

  When the descent of the stacker 110 stops, the operator of the inkjet printer 10 adds and sets a new stack base 130 on the stacker 110. That is, as shown in FIG. 13B, a new stack base 130 is placed on the third stack base 130 and set.

  When a new stack base 130 is added and set, the operator of the inkjet printing machine 10 contracts the leg 132 of the third stage stack base 130 as shown in FIG. While descending to between the fan F8 and the ninth fan F9, the leg part 132 of the newly installed fourth stage stack base 130 is extended and the upper surface thereof is positioned at the reference position. As a result, the paper 14 discharged from the paper discharge port 76 can be collected on the newly set fourth-stage stack base 130, and between the third-stage stack and the fourth-stage stack base 130. A sufficient interval (H1 = 8L) is secured.

  On the other hand, the sheets 14 stacked on the second stage stack base 130 are pushed by the third stage stack base 130 as the third stage stack base 130 descends, and the bulk is compressed. At this time, the third stack base 130 is lowered to a position where the distance from the second stack base 130 becomes H2 (≈2L). Thereby, the paper 14 after seasoning can be stored without making it bulky. At this time, the distance between the second stack base 130 and the first stack base 130 remains H2.

  In addition, the paper 14 stacked on the third stage stack base 130 has a sufficient space (H1) between the stack 14 located on the upper stage and is blown by the first fan F1 to the eighth fan F8. This enables seasoning.

  In this way, the newly set fourth-stage stack base 130 can collect the paper 14 discharged from the paper discharge port 76, and the sheets 14 stacked on the third-stage stack base 130 can be collected. When seasoning becomes possible, the operation of the apparatus is restarted.

  First, as shown to Fig.14 (a), it drives so that it may blow with the predetermined | prescribed air volume Q2 from the 1st fan F1 to the 8th fan F8 among the fans F1-F10 which comprise the ventilation units 160L and 160R. As a result, air is blown from each fan toward the end surface of the paper 14 stacked on the third stacking base 130. The air sent toward the end surface of the paper 14 enters between the papers 14 stacked on the third stage stacking table 130, thereby seasoning the papers 14 stacked on the third stage stacking table 130. Is done.

  It should be noted that the ninth fan F9 and the tenth fan F10 on which the sheets 14 stacked on the second stacking base 130 are positioned are not driven at this time. Accordingly, air is not blown to the paper 14 stacked on the second-stage stacking base 130, similarly to the paper 14 stacked on the first-stage stacking base 130.

  As described above, when driving of the fans F1 to F8 is started and seasoning for the paper 14 stacked on the third stacking stage 130 is started, printing is also restarted at the same time. Then, the continuously printed paper 14 is discharged from the paper discharge port 76. At the same time, the stacker 110 starts to descend at a predetermined speed Vt [mm / sec].

  As a result, as shown in FIG. 14B, the sheets 14 continuously discharged from the sheet discharge outlet 76 are sequentially stacked on the newly added fourth stack base 130. Go. As shown in the figure, when the stacker 110 starts to descend, the air volume of the first fan F1 is switched from Q2 to Q1, and the ninth fan F9 is newly driven with the air volume Q2. As a result, air is applied to the sheets 14 stacked on the newly added fourth stacking base 130 with the air volume Q1. As a result, the drying of the ink on the sheet 14 immediately after collection is promoted, and the sheets 14 are prevented from sticking to each other. On the other hand, the air is also blown to the paper 14 positioned below the paper 14 stacked on the third stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  As the printing progresses, the stacker 110 also descends, and when the newly added fourth stage stack base 130 reaches the installation position of the second fan F2 (= the third stage stack base 130 installs the tenth fan F10). When the position is reached, as shown in FIG. 14C, the air volume of the second fan F2 is switched from Q2 to Q1, and the tenth fan F10 is newly driven with the air volume Q2. As a result, the air is also blown to the paper 14 positioned below the paper 14 stacked on the second stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  When the printing further proceeds and the newly added fourth stage stack base 130 is lowered by 2 L [mm] from the reference position and reaches between the second fan F2 and the third fan F3, the stacker 110 is lowered. Paused. At the same time, printing is also temporarily stopped, and blowing of all the fans F1 to F10 is also temporarily stopped. That is, when the specified number X1 (= 2 L / t) of sheets 14 is collected on the newly added third stack base 130, the stacker 110 temporarily stops descending.

  Further, when the collection of the paper 14 is continued, a new stack base 130 is added to the stacker 110 and set. Then, the same operation as described above is repeated to simultaneously collect the paper 14 and seasoning.

  On the other hand, when the collection is finished, the operator of the inkjet printing machine 10 contracts the leg portion 132 of the fourth stage stack base 130 and lowers it between the eighth fan F8 and the ninth fan F9. As a result, the sheet 14 stacked on the third stage stack base 130 is pushed down by the fourth stage stack base 130 as the fourth stage stack base 130 descends, and the bulk thereof is compressed. At this time, the stack stage 130 at the fourth stage is lowered to a position where the distance from the stack stage 130 at the third stage becomes H2 (≈2L). Thereby, the paper 14 after seasoning can be stored without making it bulky. At this time, the distance between the third stack base 130 and the second stack base 130 and the distance between the second stack base 130 and the first stack base 130 remain H2. .

  In addition, the paper 14 stacked on the fourth stage stacking base 130 has a sufficient space above it and can be blown by the first fan F1 to the eighth fan F8. It becomes possible. When seasoning of the sheets 14 stacked on the fourth stacking stage 130 becomes possible, a predetermined air volume Q2 from the first fan F1 to the eighth fan F8 among the fans F1 to F10 constituting the air blowing units 160L and 160R. It is driven to blow. Thus, air is blown from each fan toward the end surface of the paper 14 stacked on the stacking stage 130 at the fourth stage. The air sent toward the end face of the paper 14 enters between the papers 14 stacked on the fourth stage stacking table 130, and thereby the seasoning of the paper 14 stacked on the fourth stage stacking table 130. Is done.

  Seasoning for the sheets 14 stacked on the fourth stack 130 is continuously performed for a predetermined time. And if predetermined time passes since seasoning start, the ventilation by the fans F1-F8 will be stopped. As a result, seasoning of the sheets 14 stacked on the stacking stage 130 at the fourth stage is completed, and seasoning of all the collected sheets 14 is completed.

  The operator of the inkjet printing machine 10 takes out the paper 14 together with the stack base 130 from the stacker 110 and carries it out of the apparatus.

  The collection operation of the paper 14 is completed through the series of steps described above.

  As described above, in the paper collecting apparatus 100 according to the present embodiment, the paper 14 discharged from the paper discharge port 76 is sequentially stacked on the stacking table 130 and collected, and when a prescribed number of papers 14 are collected, The stack base 130 moves downward. Then, the air is received from the side at the destination and seasoned. During this seasoning, the collection operation is sequentially performed on the upper stack table 130. When a specified number of sheets 14 are collected on the upper stack table 130, the upper stack table 130 moves downward and is seasoned. . On the other hand, the lower stack base 130 moves further downward and is stored without receiving air. That is, in the paper collecting apparatus 100 according to the present embodiment, the stack table 130 is a collecting unit for the paper 14 (in this example, a region (reference position from the reference position to the position between the second fan F2 and the third fan F3). From the seasoning section (in this example, the area from the third fan F3 to the tenth fan F2), and from the seasoning section to the storage section (the area where the fan is not blown). The operations of collection, seasoning, and storage are performed in parallel.

  As a result, processes from collection to seasoning can be performed efficiently, and the overall printing time can be shortened. In particular, when performing double-sided printing on the paper 14, printing on the back side can be performed in a short time after printing on the front side, and the overall printing time can be greatly reduced.

  In addition, the seasoned paper 14 can be stored without being bulky by sequentially transporting the paper 14 that has undergone seasoning downward and storing it in a place where it does not receive air from the air blowing units 160L and 160R. In other words, if air is blown to the stacked sheets, the blown air enters between the sheets and the volume of the sheet increases, but it is transferred to a place where it does not receive the blowing by the blowing units 160L and 160R and stored. The paper can be stored without being bulky.

  At this time, in the paper collecting apparatus 100 according to the present embodiment, the air between the upper and lower papers can be efficiently removed by pushing the paper having undergone seasoning downward by the stack base 72 positioned at the upper stage. The paper can be stored without being bulky. And thereby, the dimension of the height direction of an apparatus can be made compact.

  In particular, in the collecting unit, the interval (H2) between the upper and lower stacking bases is set to be substantially the same as the total thickness (2L = X1 × t) of the sheets 14 when the prescribed number (X1) of sheets 14 are stacked. Thus, the seasoned paper 14 can be stored without being bulky at all.

<Second method>
As described above, in the paper collecting apparatus 100 according to the present embodiment, while the paper 14 is being collected on the newly added stacking base 130, the paper stacked on the stacking base 130 located at the lower stage is collected. Seasoning is performed.

  Therefore, when the number of sheets stacked on one stacking table 130 increases, the seasoning time becomes longer, and when the number of sheets stacked on one stacking table 130 decreases, the seasoning time decreases.

  On the other hand, the time required for seasoning varies depending on the type of paper and the amount of ink ejected.

  Therefore, seasoning can be performed more appropriately by changing the number of sheets stacked on one stacking base 130 according to the type of paper and the amount of ink ejected.

  In the following, a collection method when the seasoning time is short will be described.

  FIG. 15A shows the state of the stacker 110 before starting printing. As shown in the figure, a stack base 130 is set in the stacker 110, and the stack base 130 is set so as to be positioned at a predetermined reference position.

  When printing is started, the stacker 110 descends in conjunction with paper discharge. Here, if the printing speed is V [sheets / sec] and the paper thickness t [mm], the stacker 110 descends at a speed of Vt [mm / sec]. As a result, as shown in FIG. 15B, the sheets 14 continuously discharged from the sheet discharge outlet 76 are sequentially stacked on the stack base 130.

  Further, when the stacker 110 is lowered, the first fan F1 is driven in conjunction therewith. As a result, air is blown from the first fan F1 with the air volume Q1 to the paper 14 collected on the stack base 130. By this blowing, drying of the ink applied to the paper 14 is promoted, and the stacked upper and lower sheets are prevented from sticking to each other.

  When printing proceeds and the stack base 130 is lowered by L [mm] from the reference position and reaches between the first fan F1 and the second fan F2, the lowering of the stacker 110 is temporarily stopped. At the same time, printing is also temporarily stopped, and blowing of the fan F1 is also temporarily stopped. That is, when the specified number X2 (= L / t) of sheets 14 are collected on the stack base 130, the stacker 110 temporarily stops the descent.

  When the descent of the stacker 110 stops, the operator of the inkjet printer 10 adds and sets a new stack base 130 on the stacker 110. That is, as shown in FIG. 15C, a new stack base 130 is placed on the stack base 130 previously set in the stacker 110 and set.

  When a new stack base 130 is added and set, as shown in FIG. 16A, the stacker 110 moves the first stage stack base 130 between the ninth fan F9 and the tenth fan F10. Descent and stop. That is, it moves down 9L [mm] and stops. Then, when the first stage stacking base 130 is lowered and stopped between the position of the ninth fan F9 and the tenth fan F10, the operator installs the newly installed second stage as shown in FIG. The leg portion 132 of the stack base 130 is extended so that the upper surface thereof is positioned at the reference position. As a result, the paper 14 discharged from the paper discharge port 76 can be collected on the newly set second stack table 130 and the first stack table 130 and the second stack table 130 can be collected. A sufficient interval (H1 = 9L) is secured between the two. Then, when the sheet 14 discharged from the discharge port 76 can be collected by the newly set second stacking base 130 as described above, the operation of the apparatus is restarted.

  First, as shown in FIG. 16 (b), among the fans F1 to F10 constituting the blower units 160L and 160R, the first fan F1 to the ninth fan F9 are blown at a predetermined air volume Q2 (Q2 <Q1). Driven. As a result, air is blown from each fan toward the end surface of the paper 14 stacked on the first stack base 130. The air sent toward the end face of the paper 14 enters between the papers 14 stacked on the first-stage stacking table 130, thereby seasoning the papers 14 stacked on the first-stage stacking table 130. Is done.

  When driving of the fans F <b> 1 to F <b> 9 is started and seasoning is started, printing is resumed at the same time, and the continuously printed paper 14 is discharged from the paper discharge port 76. At the same time, the stacker 110 starts to descend at a predetermined speed Vt [mm / sec].

  As a result, as shown in FIG. 16C, the sheets 14 continuously discharged from the sheet discharge outlet 76 are sequentially stacked on the newly added second stack base 130. Go. As shown in the figure, when the stacker 110 starts to descend, the air volume of the first fan F1 is switched from Q2 to Q1, and the 10th fan F10 is newly driven with the air volume Q2. As a result, the drying of the ink on the sheet 14 immediately after collection is promoted, and the sheets 14 are prevented from sticking to each other. Further, air is also blown to the paper 14 positioned below the paper 14 stacked on the first stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  When printing progresses and the newly added second stack base 130 is lowered by L [mm] from the reference position and reaches between the first fan F1 and the second fan F2, the stacker 110 temporarily lowers. Stopped. At the same time, printing is also temporarily stopped, and blowing of all the fans F1 to F10 is also temporarily stopped. That is, when the specified number X2 (= L / t) of sheets 14 is collected on the newly added second stacking base 130, the stacker 110 temporarily stops descending.

  When the descent of the stacker 110 stops, the operator of the inkjet printer 10 adds and sets a new stack base 130 on the stacker 110. That is, as shown in FIG. 17A, a new stack base 130 is placed on the second stack base 130 and set.

  When a new stack base 130 is added and set, the operator of the inkjet printing machine 10 contracts the leg 132 of the second stage stack base 130 as shown in FIG. While lowering between the fan F9 and the tenth fan F10, the leg portion 132 of the newly installed stack base 130 is extended and the upper surface thereof is positioned at the reference position. As a result, the paper 14 discharged from the paper discharge port 76 can be collected on the newly set third-stage stack base 130, and the second-stage stack base and the third-stage stack base 130 can be collected. A sufficient interval (H1 = 9L) is secured between them.

  On the other hand, the sheet 14 stacked on the first stage stack base 130 is pushed by the second stage stack base 130 as the second stage stack base 130 descends, and the bulk is compressed. At this time, the second stack base 130 is lowered to a position where the distance from the first stack base 130 becomes H2. This interval H2 is made substantially the same as the total thickness (L = X2 × t) of the prescribed number X2 (= L / t) of sheets 14 (H2≈L). Thereby, the paper 14 after seasoning can be stored without making it bulky. Further, the sheet 14 stacked on the second stack base 130 has a sufficient space (H1) with the stack base positioned on the upper stage, and is blown by the first fan F1 to the eighth fan F8. This enables seasoning.

  As described above, the newly set third-stage stack base 130 enables the collection of the paper 14 discharged from the paper discharge port 76, and the sheets 14 stacked on the second-stage stack base 130 can be collected. When seasoning becomes possible, the operation of the apparatus is restarted.

  First, as shown in FIG. 17C, among the fans F1 to F10 constituting the air blowing units 160L and 160R, the first fan F1 to the ninth fan F9 are driven so as to blow with a predetermined air volume Q2. As a result, air is blown from each fan toward the end surface of the paper 14 stacked on the second stacking base 130. The air sent toward the end face of the paper 14 enters between the papers 14 stacked on the second stage stacking table 130, thereby seasoning the papers 14 stacked on the second stage stacking table 130. Is done.

  Note that the tenth fan F10 on which the sheets 14 stacked on the first stacking base 130 are positioned is not driven at this time. Accordingly, air is not blown to the paper 14 stacked on the first stacking base 130.

  As described above, when the driving of the fans F1 to F9 is started and seasoning for the sheets 14 stacked on the second stacking base 130 is started, printing is also restarted at the same time. Then, the continuously printed paper 14 is discharged from the paper discharge port 76. At the same time, the stacker 110 starts to descend at a predetermined speed Vt [mm / sec].

  As a result, as shown in FIG. 18A, the sheets 14 continuously discharged from the sheet discharge outlet 76 are sequentially stacked on the newly added third stack base 130. Go. As shown in the figure, when the stacker 110 starts to descend, the air volume of the first fan F1 is switched from Q2 to Q1, and the 10th fan F10 is newly driven with the air volume Q2. As a result, air is applied to the sheets 14 stacked on the newly added third stacking base 130 with the air volume Q1. As a result, the drying of the ink on the sheet 14 immediately after collection is promoted, and the sheets 14 are prevented from sticking to each other. Also, air is blown to the paper 14 positioned below the paper 14 stacked on the second stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  When printing progresses and the newly added third stage stack base 130 descends L [mm] from the reference position and reaches between the first fan F1 and the second fan F2, the stacker 110 temporarily descends. Stopped. At the same time, printing is also temporarily stopped, and blowing of all the fans F1 to F10 is also temporarily stopped. That is, when the specified number X2 (= L / t) of sheets 14 are collected on the newly added third stack base 130, the stacker 110 temporarily stops descending.

  When the descent of the stacker 110 stops, the operator of the inkjet printer 10 adds and sets a new stack base 130 on the stacker 110. That is, as shown in FIG. 18B, a new stack base 130 is placed on the third stack base 130 and set.

  When a new stack base 130 is added and set, the operator of the inkjet printing press 10 contracts the leg 132 of the third stage stack base 130 as shown in FIG. While descending to between the fan F9 and the tenth fan F10, the leg 132 of the newly installed fourth stage stack base 130 is extended, and the upper surface thereof is positioned at the reference position. As a result, the paper 14 discharged from the discharge port 76 can be collected on the newly set fourth-stage stack base 130, and the third-stage stack base and the fourth-stage stack base 130 can be collected. A sufficient interval (H1 = 9L) is secured between them.

  On the other hand, the sheet 14 stacked on the second stage stack base 130 is pushed by the third stage stack base 130 as the third stage stack base 130 descends, and the bulk is compressed. At this time, the third stack base 130 is lowered to a position where the distance from the second stack base 130 becomes H2. Thereby, the paper 14 after seasoning can be stored without making it bulky. At this time, the distance between the second stack base 130 and the first stack base 130 remains H2.

  In addition, the sheets 14 stacked on the third stage stacking base 130 have a sufficient space (H1) between the fourth stage stacking base 130 and the first fan F1 to the eighth fan F8. Air blowing is possible. Thereby, seasoning becomes possible.

  In this way, the newly set fourth-stage stack base 130 can collect the paper 14 discharged from the paper discharge port 76, and the sheets 14 stacked on the third-stage stack base 130 can be collected. When seasoning becomes possible, the operation of the apparatus is restarted.

  First, as shown to Fig.19 (a), it drives so that it may blow with the predetermined | prescribed air volume Q2 from the 1st fan F1 to the 9th fan F9 among the fans F1-F10 which comprise the ventilation units 160L and 160R. As a result, air is blown from each fan toward the end surface of the paper 14 stacked on the third stacking base 130. The air sent toward the end surface of the paper 14 enters between the papers 14 stacked on the third stage stacking table 130, thereby seasoning the papers 14 stacked on the third stage stacking table 130. Is done.

  Note that the tenth fan F10 on which the sheets 14 stacked on the second stacking base 130 are positioned is not driven at this time. Accordingly, air is not blown to the paper 14 stacked on the second-stage stacking base 130, similarly to the paper 14 stacked on the first-stage stacking base 130.

  As described above, when driving of the fans F1 to F9 is started and seasoning for the paper 14 stacked on the third stacking stage 130 is started, printing is also restarted at the same time. Then, the continuously printed paper 14 is discharged from the paper discharge port 76. At the same time, the stacker 110 starts to descend at a predetermined speed Vt [mm / sec].

  As a result, as shown in FIG. 19B, the sheets 14 continuously discharged from the sheet discharge outlet 76 are sequentially stacked on the newly added fourth stack base 130. Go. As shown in the figure, when the stacker 110 starts to descend, the air volume of the first fan F1 is switched from Q2 to Q1, and the 10th fan F10 is newly driven with the air volume Q2. As a result, air is applied to the sheets 14 stacked on the newly added third stacking base 130 with the air volume Q1. As a result, the drying of the ink on the sheet 14 immediately after collection is promoted, and the sheets 14 are prevented from sticking to each other. Also, air is blown to the paper 14 positioned below the paper 14 stacked on the third stacking base 130, and the paper 14 positioned below the stacked paper 14 can be sufficiently seasoned. become able to.

  When printing progresses and the newly added fourth stage stack base 130 descends L [mm] from the reference position and reaches between the first fan F1 and the second fan F2, the stacker 110 temporarily descends. Stopped. At the same time, printing is also temporarily stopped, and blowing of all the fans F1 to F10 is also temporarily stopped. That is, when the specified number X2 (= L / t) of sheets 14 are collected on the newly added fourth stage stack base 130, the stacker 110 temporarily stops descending.

  Further, when the collection of the paper 14 is continued, a new stack base 130 is added to the stacker 110 and set. Then, the same operation as described above is repeated to simultaneously collect the paper 14 and seasoning.

  On the other hand, when the collection is finished, the operator of the inkjet printing machine 10 contracts the leg portion 132 of the fourth stage stack base 130 and lowers it between the ninth fan F9 and the tenth fan F10. As a result, the sheet 14 stacked on the third stage stack base 130 is pushed down by the fourth stage stack base 130 as the fourth stage stack base 130 descends, and the bulk thereof is compressed. At this time, the fourth stack base 130 is lowered to a position where the distance from the third stack base 130 becomes H2. Thereby, the paper 14 after seasoning can be stored without making it bulky. At this time, the distance between the third stack base 130 and the second stack base 130 and the distance between the second stack base 130 and the first stack base 130 remain H2. .

  Further, the sheets 14 stacked on the fourth stacking base 130 can be blown by the first fan F1 to the eighth fan F8. When seasoning of the sheets 14 stacked on the fourth stacking stage 130 becomes possible, a predetermined air volume Q2 from the first fan F1 to the ninth fan F9 among the fans F1 to F10 constituting the air blowing units 160L and 160R. It is driven to blow. Thus, air is blown from each fan toward the end surface of the paper 14 stacked on the stacking stage 130 at the fourth stage. The air sent toward the end face of the paper 14 enters between the papers 14 stacked on the fourth stage stacking table 130, and thereby the seasoning of the paper 14 stacked on the fourth stage stacking table 130. Is done.

  Seasoning for the sheets 14 stacked on the fourth stack 130 is continuously performed for a predetermined time. And if predetermined time passes since seasoning start, the ventilation by the fans F1-F9 will be stopped. As a result, seasoning of the sheets 14 stacked on the stacking stage 130 at the fourth stage is completed, and seasoning of all the collected sheets 14 is completed.

  The operator of the inkjet printing machine 10 takes out the paper 14 together with the stack base 130 from the stacker 110 and carries it out of the apparatus.

  The collection operation of the paper 14 is completed through the series of steps described above.

  As described above, in this method (second method), the seasoning time is shortened by reducing the number of sheets 14 collected by one stacking table 130.

  Therefore, in the case of a paper that tends to stretch with moisture and requires a seasoning time (generally, a paper with a thin coat layer) or a printing method with a large amount of ink droplets applied to the paper, the first method collects and seasons. In other cases, it can be properly recovered and seasoned by collecting and seasoning with this method (second method).

  The collection control device receives necessary information (such as paper thickness information and ink droplet ejection amount information) from the control device of the ink jet printer, and switches between the collection and seasoning methods. Alternatively, the collection and seasoning methods are switched upon receiving necessary information from the operator.

  Thus, it is preferable that the number of sheets 14 collected by one stacking base 130 is changed according to the type of sheet and the amount of ink ejected.

  The air volume Q2 during seasoning in the second method may be smaller than the air volume Q2 during seasoning in the first method.

<< Other Embodiments >>
<Other embodiment 1>
In the above-described embodiment, the stack table 130 is individually moved up and down, and the telescoping leg portion 132 is installed at the lower portion of the stack table 130, and the leg portion 132 is expanded and contracted to individually move the stack table 130 individually. Although it is set as the structure raised / lowered, the structure which raises / lowers the stack stand 130 separately is not limited to this. In addition, for example, as shown in FIG. 20, a leg portion 134 having a pantograph structure may be installed at the lower portion of the stack base 130, and the leg portion 134 may be expanded and contracted to individually raise and lower the stack base 130. .

<Other embodiment 2>
Further, in the above embodiment, when switching the amount of air blown to the paper 14 at the time of collection and seasoning, the amount of air blown by the same fan is switched to switch the amount of air blown at the time of collection and seasoning. By separately providing a fan that blows air with the collection air volume Q1 and a fan that blows air with the seasoning air flow Q2, and switching the fans to be used, the air volume of the air blown to the paper 14 at the time of collection and seasoning It can also be set as the structure which switches.

  FIG. 21 is a front view showing a configuration of a blower unit 160L ′ (160R ′) having a fan that blows air with a collection airflow Q1 and a fan that blows air with a seasoning airflow Q2. As shown in the figure, a first spare fan f1 and a second spare fan f2 are installed in the first stage and the second stage for blowing air with a recovery air volume Q1. The first spare fan f1 and the second spare fan f2 are arranged in parallel vertically at the same interval as the installation interval L of the first fan F1 and the second fan F2, respectively. The first spare fans f1 are arranged between the first fans F1, and the first fans F1 and the first spare fans f1 are alternately arranged in the lateral direction. The second spare fans f2 are arranged between the second fans F2, and the second fans F2 and the second spare fans f2 are alternately arranged in the horizontal direction.

  In the air blowing units 160L ′ and 160R ′ configured as described above, when the first and second stage fans send air to the paper being collected, the first spare fan f1 and the second spare fan. When the air is blown at f2 and blown to the paper being seasoned, the air is blown by the first fan F1 and the second fan F2.

  In this case, warm air may be blown from the first spare fan f1 and the second spare fan f2.

  About the 1st spare fan f1 and the 2nd spare fan f2, it may replace with a fan and install a compression blower, and you may make it send compressed air from the said compression blower.

  In this example, spare fans are installed up to the second stage, but the number of spare fans installed can be increased or decreased as necessary. That is, the number of spare fans to be installed is set as appropriate according to the number of sheets collected by one stack table 130 (set according to the range of the collection unit).

<Other embodiment 3>
In the above embodiment, when a specified number of sheets are collected on one stacking table 130, printing is stopped, and the operator adds a new stacking table 130 and installs it. In this case, it is preferable to have a configuration for notifying the operator of the addition of a new stacking table 130. In this case, for example, an alarm device or a warning light can be installed to sound an alarm or turn on the warning light to prompt the installation of a new stack base 130. Alternatively, necessary information can be transmitted to a portable terminal (such as a cellular phone or PDA) held by an operator (for example, an electronic mail or the like is automatically transmitted) to prompt the installation of a new stack base 130.

<Other embodiment 4>
In the above embodiment, the operator installs the stacking base 130. However, the stacking base 130 may be automatically supplied.

  FIG. 22 is a side partial cross-sectional view illustrating an example of a sheet collecting apparatus configured to automatically supply a stacking base.

  In the paper collecting apparatus 200 of this example, the stacker 210 is fixedly installed at a predetermined position. In the stacker 210, a plurality of stack bases 230 are accommodated and arranged so as to be individually movable up and down.

  Each stack base 230 is connected to an elevating body 234 via an arm 232, and the elevating body 234 is provided so as to be capable of self-propelled along a rail 236 erected vertically. Each stack base 230 moves up and down vertically in the stacker as the elevating body 234 connected via the arm 232 moves along the rail 236 (moves up and down in the stacking direction of the sheets).

  In the paper collecting apparatus 200 of this example, the collecting unit that collects the paper 14, the seasoning unit that seasons the collected paper 14, and the storage unit that stores the paper 14 after seasoning are independent of each other. The seasoning unit is formed below the recovery unit, and the storage unit is formed below the seasoning unit. The collecting unit is provided with dedicated blowing units (first blowing unit) 240L, 240R (only the first blowing unit 240L on one side is shown) for blowing the collected paper, and the seasoning unit includes , Dedicated blowing units (second blowing units) 250L and 250R for seasoning (only the second blowing unit 250L on one side is shown) are provided.

  Each stack base 230 provided in the stacker 210 moves from a predetermined standby unit to a collection unit, seasoning unit, and storage unit by moving up and down.

  The first air blowing units 240L and 240R installed in the collecting unit are arranged symmetrically with the stacker 210 interposed therebetween, and blow air of a predetermined air volume Q1 toward the end surface of the paper 14 being collected. The first blower units 240L and 240R are configured by arranging a plurality of fans f1 to f2 in parallel at a certain interval vertically and horizontally on a mounting panel formed in a rectangular plate shape (in this example, 2 fans in the vertical direction and 3 fans f1 to f10 in the horizontal direction are arranged in parallel.

  The first air blowing units 240L and 240R are arranged symmetrically with respect to the stacker 210, and blow air of a predetermined air volume Q1 toward the end surface of the paper 14 being collected.

  The second air blowing units 250L and 250R installed in the seasoning section are arranged symmetrically with the stacker 210 interposed therebetween, and have a predetermined air volume Q2 toward the end surface of the paper 14 on the stacking table transferred to a predetermined seasoning position. Air of (Q2 <Q1) is blown. The second blower units 250L and 250R are configured by arranging a plurality of fans F1 to F10 in parallel at a certain interval vertically and horizontally on a mounting panel formed in a rectangular plate shape (in this example, 8 fans in the vertical direction and 3 fans F1 to F8 in the horizontal direction are arranged in parallel.

  In the paper collecting apparatus 200 of the present example configured as described above, paper collection is performed as follows.

  First, the lower stack base 230 is a reference position (a position where the paper 14 disposed horizontally from the paper discharge outlet 76 is placed on the stack base 130 as it is, and the upper surface of the stack base 230 is , A position slightly below the paper discharge port 76).

  The other stack base 230 is waiting at a standby position above the collection unit.

  When printing is started, the lowermost stack base 230 descends at a predetermined speed Vt in conjunction with the discharge of the paper 14. As a result, the sheets 14 discharged from the sheet discharge outlet 76 are sequentially stacked on the stack base 230.

  In conjunction with this collection, the fans f1 and f2 constituting the first air blowing units 240L and 240R are driven, and air is blown toward the paper 14 collected on the stack base 230 with a predetermined air volume Q2. Is done. Thereby, the ink of the paper collected on the stack base 230 is dried, and the collected paper is prevented from sticking up and down.

  When printing proceeds and a specified number of sheets are collected, printing and blowing by the first blowing units 240L and 240R are temporarily stopped. Then, when printing is temporarily stopped, the lowermost stack base 230 from which the paper 14 has been collected is lowered by a predetermined amount, and the seasoning position (the installation position of the lowermost fan F8 constituting the second blower units 250L and 250R). Move to. Accordingly, air can be blown from the second blower units 250L and 250R to the paper 14 placed on the lowermost stack base 230, and seasoning is possible. ).

  When the lowermost stack base 230 from which the paper 14 has been collected moves to the seasoning position, the second stack base 230 positioned at the upper stage moves to the reference position. As a result, the paper 14 discharged from the paper discharge port 76 can be collected by the second stack base 230.

  When the second stack base 230 moves to the reference position, printing is resumed. When printing is resumed, the discharge of the paper 14 is also resumed, and accordingly, the second stage stack base 230 is lowered at a predetermined speed Vt. As a result, the sheets 14 discharged from the sheet discharge outlet 76 are sequentially stacked on the second stack base 230.

  In conjunction with this collection, the fans f1 and f2 constituting the first air blowing units 240L and 240R are driven, and air is blown toward the paper 14 collected on the stack base 230 with a predetermined air volume Q2. Is done. Thereby, the ink of the paper collected on the stack base 230 is dried, and the collected paper is prevented from sticking up and down.

  On the other hand, in the seasoning unit, each of the fans F1 to F8 constituting the second air blowing units 250L and 250R is driven, and air flows with a predetermined air volume Q2 toward the end surface of the paper 14 placed on the lowermost stack base 230. Be blown. As a result, the paper 14 placed on the lowermost stack base 230 is seasoned.

  When printing progresses and a specified number of sheets are collected, printing and blowing by the first and second blowing units are temporarily stopped. Then, when printing is temporarily stopped, the lowest stack base 230 on which seasoning has been performed moves down by a predetermined amount and moves to the storage unit (in this case, moves to the bottom of the stacker 210).

  When the lowermost stack base 230 moves to the storage unit, the second stack base 230 from which the paper 14 is collected moves to the seasoning position.

  Then, when the second stage stack base 230 moves to the seasoning position, the third stage stack base 230 moves to the reference position.

  In this way, each time a specified number of sheets are collected, the stack base 230 in the seasoning unit is stored in the storage unit, the stack base 230 in the recovery unit is in the seasoning unit, and the stack base 230 in the standby unit is in the recovery unit. And transport. As a result, the stack base 230 can be automatically supplied, and the collected paper can be automatically transferred to the seasoning unit and the storage unit.

  In this case as well, the seasoned paper can be stored more compactly by pressing the paper after seasoning with the stack base 230 positioned at the upper stage to compress the bulk.

  Thus, if each stack stand can be raised and lowered individually, the stack stand can be automatically supplied. In addition, about the structure which raises / lowers a stack stand separately, it is not limited to the thing of this example, Another structure can also be employ | adopted.

<Other embodiment 5>
In the above embodiment, when seasoning, all the fans F1 to F10 constituting the air blowing units 160L and 160R are operated. However, the presence or absence of the paper 14 is detected, and only the necessary fans are driven. Also good.

  That is, as shown in FIGS. 23A to 23C, when air is blown to the end face of the paper stacked on the stacking base 130, the air enters between the papers and the bulk increases. The position of the uppermost sheet 14 is detected, and only the fan in the area where the sheet 14 exists is driven. For example, in FIG. 5B, since the position of the uppermost sheet 14 is at the height of the seventh fan F7, the seventh fan F7 to the ninth fan F9 where the sheet 14 exists are driven. In FIG. 9C, since the uppermost sheet 14 is at the position of the third fan F3, the third fan F3 to the ninth fan F9 where the sheet 14 exists are driven.

  In this way, by driving only the fan on which the paper 14 is present, unnecessary driving of the fan can be prevented and power consumption can be suppressed.

  The method for detecting the position of the uppermost sheet 14 (the range in which the sheet exists) is not particularly limited. For example, as shown in FIG. 24, the fan F1 to F10 of each stage of one blowing unit 160L It is possible to employ a method in which the light projecting sensors Sa1 to Sa9 are installed between them and the light receiving sensors Sb1 to Sb10 are installed and detected between the fans F1 to F10 of each stage of the other blower unit 160R. In this method, the position of the uppermost sheet 14 is detected based on whether or not the light projected from each of the light projecting sensors Sa1 to Sa9 is received by the corresponding light receiving sensors Sb1 to Sb10. That is, when a sheet is present, the light projected from the light projecting sensor is blocked by the sheet and is not received by the light receiving sensor, so that the area not received by the light receiving sensor is the area where the paper is present. In this case, the fan located below the light receiving sensor located at the lowermost stage among the light receiving sensors receiving light is driven. For example, when the light receiving sensor positioned at the lowest stage among the light receiving sensors receiving light is Sb4, the fifth fan F5 to the tenth fan F10 positioned below the light receiving sensor Sb4 (however, the stack base) Is in the installation position of the tenth fan F10). Thereby, useless driving of the fan can be prevented.

<Other embodiment 6>
In the above embodiment, when seasoning the paper 14, each fan is blown with the same air volume Q2. However, the air volume may be increased stepwise downward. That is, it is set as the structure which blows with a strong air volume, the paper located in the lower part of the laminated | stacked paper. Thereby, air can be efficiently put into the inside of the paper located below the laminated paper, and seasoning can be performed efficiently.

<Other embodiment 7>
In the said embodiment, although it is set as the structure which installs a ventilation unit in the right and left sides of a stacker, the installation layout of a ventilation unit is not limited to this. You may make it install only in either one of right and left, and you may make it install also in a back surface.

  DESCRIPTION OF SYMBOLS 10 ... Inkjet printing machine, 14 ... Paper, 20 ... Paper feed part, 30 ... Treatment liquid provision part, 40 ... Drawing part, 46C, 46M, 46Y, 46K ... Inkjet head, 50 ... Drying part, 60 ... Fixing part, 70 ... Collection unit, 74 ... Paper discharge conveyor, 76 ... Paper discharge port, 100 ... Paper collection device, 110 ... Stacker, 130 ... Stack base, 140 ... Lifting mechanism, 160L, 160R ... Air blow unit, F1-F10 ... Fan, f1 ˜f2: Preliminary fan, 200: Paper collection device, 210: Stacker, 230: Stack base, 234: Lifting body, 240L, 240R: First air blowing unit, 250L, 250R: Second air blowing unit

Claims (13)

In the paper collection device that collects the printed paper that is continuously discharged from the paper discharge port of the printing press,
A stack base provided in multiple stages in the vertical direction, on which the sheets discharged from the discharge outlet are stacked,
Each stacking table is individually moved up and down in the sheet stacking direction to collect the paper ejected from the paper ejection port, the seasoning unit for seasoning the collected paper, and the storage for storing the paper after seasoning A transfer means for transferring to the section;
Air blowing means for blowing air to the sheets stacked on the stack table, with respect to the stack table transferred to the seasoning unit,
Elevation control means for controlling the transfer means to individually control the elevation of the stacking table,
The raising / lowering control means lowers the stacking base at a predetermined speed so that the sheets discharged from the paper discharge outlet are sequentially stacked on the stacking base in the collecting unit. When the paper is stacked on the stacking table, the stacking table is lowered and transferred to the seasoning unit, and the air blown from the blowing unit is applied to an end surface of the paper stacked on the stacking table, so that the paper is Seasoning is performed for a predetermined time, and after completion of seasoning, the stacking table is lowered and transferred to the storage unit that does not receive the air from the blowing means , and the stacking unit in the seasoning unit is stored from the seasoning unit to the storage unit. Transferred to the seasoning section, the stack base in the recovery section is transferred from the recovery section to the seasoning section. When the serial recovery unit are transferred to the seasoning unit, it sets a new stack base to the recovery section,
When the stacking table is transferred from the collecting unit to the seasoning unit, the sheets stacked on the stacking table located at the lower stage of the stacking table are pushed onto the stacking table transferred from the collecting unit to the seasoning unit. The paper collecting device is characterized in that the bulk is compressed . The sheet collecting apparatus according to claim 1 , further comprising a second air blowing unit that blows air toward the sheets sequentially stacked on the stacking base in the collecting unit. The paper collecting apparatus according to claim 2 , wherein an air volume of the second air blowing unit is set larger than an air volume of the air blowing unit. The paper collecting apparatus according to any one of claims 1 to 3 , wherein the air blowing unit includes a plurality of fans arranged in a row in the stacking direction of the paper. The air blowing means and the second air blowing means are configured by a plurality of fans arranged in a row in the stacking direction of the paper, and the air blowing according to the number of papers collected on the stack base by the collecting unit. 4. The sheet collecting apparatus according to claim 2 , wherein the sheet collecting apparatus is divided into a fan constituting the means and a fan constituting the second air blowing means. 6. The paper collecting apparatus according to claim 4, wherein the individual fans constituting the blower are set so that the air volume increases stepwise from the upper stage toward the lower stage. In the paper collection device that collects the printed paper that is continuously discharged from the paper discharge port of the printing press,
A stacking base on which sheets discharged from the discharge outlet are stacked;
The stacking table is moved up and down in the stacking direction of the sheets, to a collection unit that collects the paper discharged from the paper discharge port, a seasoning unit that seasons the collected paper, and a storage unit that stores the paper after seasoning A transfer means for transferring;
A plurality of fans arranged in tandem in the stacking direction of the paper , and with respect to the stacking table transferred to the seasoning unit, air blowing means for blowing the paper stacked on the stacking table,
Detecting means for detecting an area where paper is present with respect to the stacking table transferred to the seasoning unit;
Lift control means for controlling the transfer means to control the lifting and lowering of the stack base;
Blower control means for controlling driving of individual fans constituting the blower means;
With
The raising / lowering control means lowers the stacking base at a predetermined speed so that the paper discharged from the paper discharge outlet is sequentially stacked on the stacking base in the collecting unit, and a predetermined number of sheets of paper are When stacked on the stacking table, the stacking table is lowered and transferred to the seasoning unit, and the air blown from the blowing unit is applied to the end surface of the sheet stacked on the stacking table to season the sheet for a predetermined time. Then, after completion of seasoning, the stack base is lowered and transferred to the storage unit that does not receive air from the air blowing means ,
The paper collection device , wherein the air blowing control unit drives only a fan in an area where the paper exists based on a detection result of the detection unit. 8. The paper collecting apparatus according to claim 7 , wherein the individual fans constituting the blower are set so that the air volume increases stepwise from the upper stage to the lower stage. The sheet collecting apparatus according to claim 7, further comprising a second blowing unit that blows air toward the sheets sequentially stacked on the stacking base in the collecting unit. The paper collecting apparatus according to claim 9 , wherein an air volume of the second air blowing unit is set larger than an air volume of the air blowing unit. Before Stories second blowing means, said being with blower means is composed of a plurality of fans arranged in tandem in the stack direction of the sheet, depending on the number of sheets to be collected in the stack table by the recovery unit, the 11. The sheet collecting apparatus according to claim 9 , wherein the sheet collecting apparatus is divided into a fan constituting the air blowing means and a fan constituting the second air blowing means. The prescribed number of sheets, the sheet collecting apparatus according to any one of claims 1 to 11, characterized in that is set according to the type of the paper. 13. The printing apparatus according to claim 1 , wherein the printing machine prints an image on the paper by an inkjet method, and the specified number of sheets is set according to an ink amount of the image printed on the paper. The paper collection device according to the item.

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