JP5345009B2 - Seasoning method and apparatus - Google Patents

Description

  The present invention relates to a seasoning method and apparatus, and more particularly to a seasoning method and apparatus for making air in-plane moisture uniform by putting air between stacked paper sheets.

  When performing double-sided printing on a sheet of paper, printing on the front surface and the back surface is usually performed separately, and printing on the back surface is performed after the front surface printing is completed.

  However, when the front surface and the back surface are printed separately in this way, there arises a problem that the size and the position of the image printed on the front surface and the back surface are shifted depending on the timing at which the back surface is printed. In other words, because 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 will be printed with the moisture stretched and the back side will be printed. Deviation occurs in the size and position of the image to be printed.

  Therefore, Japanese Patent Application Laid-Open No. 2004-228561 proposes that after printing on the front side, the sheet is discharged onto a discharge tray outside the apparatus, dried on the discharge tray, and then printed on the back side.

  The method of Patent Document 1 is effective when processing sheets one by one, but because the printing speed is high and processing cannot be performed one by one, the sheets are stacked on the discharge tray. Has a drawback that a sufficient drying effect cannot be obtained.

  On the other hand, Patent Document 2 discloses a technique related to paper stacking of stacked sheets, and jets compressed air toward the end face of a sheet while reciprocating a nozzle in a direction parallel to the stacking direction of the stacked sheets. Techniques to do this are disclosed.

  Also, Patent Document 3 is a technique related to paper stacking of stacked sheets, and an outer peripheral wall is arranged around the stacked sheets, and compressed from an air discharge port formed on the outer peripheral wall toward the end face of the sheet. A technique for injecting air is disclosed.

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

  As described above, the techniques described in Patent Documents 2 and 3 are related to papermaking, but air is blown between the stacked sheets by injecting compressed air onto the end surfaces of the stacked sheets. It can be put in and has an effect on paper drying.

  However, the technique described in Patent Document 2 has a structure in which the nozzles reciprocate, and air supply to the stacked sheets becomes intermittent, and has good performance with respect to papermaking, but drying takes time. There is a disadvantage that it takes.

  On the other hand, the technique described in Patent Document 3 has a structure in which the periphery of the paper is hermetically sealed, and the air between the stacked papers is not replaced and has good performance with respect to papermaking, but it takes time to dry. There is a disadvantage that it takes. In addition, since compressed air dehumidified from ambient air is ejected, there is a disadvantage that drying of seasoned paper is accelerated to ambient air or less.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a seasoning method and apparatus capable of efficiently seasoning stacked sheets.

According to a first aspect of the present invention, in order to achieve the above object, in a seasoning method for seasoning laminated paper, pressurized air that jets pressurized air vertically toward one end face of the laminated paper is provided. While reciprocating the ejecting means in a direction parallel to the laminating direction of the laminated paper, the air from the blower means is vertically directed toward the same end surface as the end surface of the paper from which the pressurized air ejecting means ejects pressurized air. A seasoning method for blowing air , wherein a plurality of the blowing means are arranged in parallel along an end face of the paper on which the pressurized air ejecting means ejects pressurized air, and the pressurized air is disposed between the adjacent blowing means. There is provided a seasoning method characterized by disposing an injection means .

According to the present invention, air is blown from the blowing means toward the end face of the laminated paper, and at the same time, from the pressurized air ejecting means that reciprocates in the direction parallel to the lamination direction, the end face of the laminated paper is applied. Pressurized air is jetted toward. The paper to which the pressurized air is blown increases the distance between the overlapping papers. As a result, the air blown from the blowing means can be passed to the inside of the laminated paper, and the laminated paper can be seasoned efficiently .
The invention according to 請 Motomeko 2, in order to achieve the above object, the pressurized air injection means along the direction for injecting the pressurized air is arranged in parallel with a pair of partition walls, between the pair of partition wall The seasoning method according to claim 1, wherein the paper is disposed.

The invention according to claim 3 is characterized in that, in order to achieve the object, the moving speed of the pressurized air injection means is 100 [mm / s] to 1000 [mm / s]. Alternatively , the seasoning method according to 2 is provided.

  When increasing the interval between the stacked sheets of pressurized air ejected from the reciprocating pressurized air ejecting means, if the moving speed of the pressurized air ejecting means is too slow, the air between the papers will escape, Can not be spread well. On the contrary, even if the moving speed of the pressurized air ejecting means is too fast, the upper paper tries to widen the paper before the paper is sufficiently widened, so that the spread between the lower papers is suppressed. The gap between the papers cannot be spread well. The inventor of the present application has found that by setting the moving speed of the pressurized air injection means to 100 [mm / s] to 1000 [mm / s], the gap between the stacked papers can be favorably widened. . Thereby, it is possible to season the laminated paper more efficiently.

The invention according to claim 4, in order to achieve the above object, the static pressure of the fan used for the blower means, 200 [Pa] to 2000 one of claims 1, which is a [Pa] 3 of A seasoning method according to claim 1 is provided.

  When carrying out seasoning by widening the interval between the stacked sheets of pressurized air ejected from the reciprocating pressurized air ejecting means, if the static pressure of the fan used as the air blowing means is too low, the air is blown by the effect of pressure loss due to the gap between the sheets. The air thus blown cannot be blown through between the sheets, so that efficient seasoning cannot be performed. Conversely, if the static pressure of the fan used as the blowing means is too high, the paper may be blown away by the blown air, or the paper may be damaged if the upper surface of the paper is held by the paper holding plate. Arise. The inventor of the present application has found that the laminated paper can be seasoned satisfactorily by setting the static pressure of the fan used for the blowing means to 200 [Pa] to 2000 [Pa]. Thereby, the laminated paper can be seasoned efficiently without damaging the paper.

The invention according to claim 5 is characterized in that, in order to achieve the object, the pressure of the pressurized air ejected from the pressurized air ejecting means is 100 [kPa] to 500 [kPa]. The seasoning method according to any one of 1 to 4 is provided.

  When widening the interval between the stacked sheets of pressurized air ejected from the reciprocating pressurized air ejecting means, if the pressure of the pressurized air ejected from the pressurized air ejecting means is too low, the force to widen the space between the sheets It is weak and cannot sufficiently widen the paper. On the other hand, if the pressure of the pressurized air ejected from the pressurized air ejecting means is too high, the paper will be damaged if the paper is blown away by the blown air or the upper surface of the paper is held by the paper restraining plate. This causes a malfunction. The inventor of the present application has found that the space between the stacked papers can be increased well by setting the pressure of the pressurized air ejected from the pressurized air ejecting means to 100 [kPa] to 500 [kPa]. . Thereby, the laminated paper can be seasoned efficiently without damaging the paper.

The invention according to claim 6 is characterized in that, in order to achieve the object, an installation interval of the pressurized air injection means is 100 [mm / piece] to 300 [mm / piece]. To 5. The seasoning method according to any one of 1 to 5 is provided.

  When injecting pressurized air from a plurality of pressurized air ejecting means toward the end face of the laminated paper, if the installation interval is too wide, sufficient paper space cannot be obtained, and seasoning time becomes longer. On the other hand, if the installation interval is too narrow, drying is accelerated to below the environmental air by the pressurized air dehumidified rather than the environmental air, which is not preferable. The inventor of the present application has found that the pressurized air injection means can be arranged and seasoned without waste by setting the installation interval of the pressurized air injection means to 100 [mm / piece] to 300 [mm / piece]. Thereby, it is possible to season the laminated paper more efficiently.

The invention according to claim 7, in order to achieve the above object, the installation interval of said blowing means, 100 [mm / piece] 300 the preceding claims, characterized in that a [mm / piece] 6 A seasoning method according to any one of the above is provided.

  When air is blown from a plurality of blowing means toward the end face of the laminated paper, if the installation interval is too wide, drying unevenness occurs due to the drying air distribution. On the other hand, if the installation interval is too narrow, the number of arrangements increases, causing a problem that the manufacturing cost increases. The inventor of the present application has found that seasoning can be performed without causing drying unevenness by setting the installation interval of the air blowing means to 100 [mm / piece] to 300 [mm / piece]. As a result, it is possible to season the efficiently stacked papers at a reduced cost.

The invention according to claim 8 provides the seasoning method according to any one of claims 1 to 7 , characterized in that ink-jet printed paper is laminated and seasoned to achieve the object. .

  Since ink-jet printed paper has a large amount of water in the image area, it takes time until the remaining water volume in the image area and the remaining water volume in the non-image area are adapted to the environment. By seasoning such ink-jet printed paper by the seasoning method of the present invention, it is possible to season efficiently in a short time.

The invention according to claim 9, in order to achieve the above object, claim with an aqueous ink containing and a colorant thermoplastic resin laminated paper which is ink jet printing, characterized in that seasoning 8 The seasoning method described in 1. is provided.

  Paper that has been ink-jet printed with so-called water-based ink has a particularly large amount of water in the image area. Therefore, it takes time for the remaining amount of water in the image area and the remaining water in the non-image area to adapt to the environment. By seasoning a paper inkjet-printed with such a water-based ink by the seasoning method of the present invention, it can be seasoned efficiently in a short time.

In order to achieve the above object, the invention according to claim 10 is characterized by laminating ink-jet printed paper using water-based ink containing an actinic ray curable resin and a coloring material and seasoning. Item 9. The seasoning method according to Item 8 .

  Paper that has been ink-jet printed with so-called water-based ink has a particularly large amount of water in the image area. Therefore, it takes time for the remaining amount of water in the image area and the remaining water in the non-image area to adapt to the environment. By seasoning a paper inkjet-printed with such a water-based ink by the seasoning method of the present invention, it can be seasoned efficiently in a short time.

According to an eleventh aspect of the present invention, in order to achieve the above object, the height of the stacked paper is detected by a detection means, and the movement stroke of the pressurized air injection means is determined according to the detected height. The seasoning method according to any one of claims 1 to 10 , wherein the seasoning method is variable.

  When the laminated paper is blown with air on its end face, and is injected with pressurized air on its end face, the air enters between the papers and the overall height increases. In the present invention, the height of the paper is detected, and the moving stroke of the pressurized air ejecting means is adjusted according to the changed height of the paper. Thereby, pressurized air can be injected appropriately.

According to a twelfth aspect of the present invention, in order to achieve the above object, the upper surface of the stacked paper is suppressed by a paper pressing plate, and the position of the paper pressing plate is varied according to the number of the stacked paper. The seasoning method according to claim 11 is provided.

  According to the present invention, the top surface of the laminated paper (the topmost paper surface) is seasoned while being suppressed by the paper holding plate. In this case, according to the present invention, when the seasoning is started based on the upper surface of the paper stacked on the paper mounting table, the installation position of the paper holding plate is adjusted according to the number of paper. Accordingly, it is possible to prevent the paper from being blown off and to prevent the paper from being strongly pressed against the paper holding plate and being damaged.

According to a thirteenth aspect of the present invention, in order to achieve the above object, in a seasoning device for seasoning stacked paper, a mounting table on which the paper is stacked and mounted, and a paper stacked on the mounting table A pressurized air ejecting means for ejecting the pressurized air vertically toward one end surface of the sheet, and the pressurized air ejecting means is reciprocated in a direction parallel to the stacking direction of the paper stacked on the mounting table. A moving unit, and a blowing unit that blows air vertically toward the same end surface as the end surface of the paper on which the pressurized air ejecting unit ejects the pressurized air with respect to the paper stacked on the mounting table. A plurality of the blowing means are arranged in parallel along an end face of the paper on which the pressurized air ejecting means ejects pressurized air, and the pressurized air ejecting means is arranged between the adjacent blowing means to provide a seasoning apparatus according to claim is that the .

According to the present invention, the air is blown from the air blowing means toward the end surface of the paper laminated on the mounting table, and at the same time, the pressurized air ejecting means that reciprocates in the direction parallel to the stacking direction, Pressurized air is jetted toward the end face of the paper laminated on the top. The paper to which the pressurized air is blown increases the distance between the overlapping papers. As a result, the air blown from the blowing means can be passed to the inside of the laminated paper, and the laminated paper can be seasoned efficiently .
The invention according to 請 Motomeko 14, in order to achieve the object, further comprising a pair of partition walls, wherein the pressurized air injection means are arranged parallel along the direction for injecting pressurized air, the pair of partition wall The seasoning device according to claim 13 , wherein the paper is disposed between the two.

In the invention according to claim 15 , in order to achieve the object, the moving means reciprocates the pressurized air injection means at a moving speed of 100 [mm / s] to 1000 [mm / s]. A seasoning device according to claim 13 or 14 is provided.

  According to the present invention, the moving speed of the pressurized air injection means is set to 100 [mm / s] to 1000 [mm / s].

The invention according to claim 16, in order to achieve the object, the air blowing means, claim 13, wherein 15 of the static pressure is a fan of 200 [Pa] ~2000 [Pa] A seasoning device according to one item is provided.

  According to the present invention, the static pressure of the fan used for the blowing means is set to 200 [Pa] to 2000 [Pa].

The invention according to claim 17, in order to achieve the above object, the pressurized air injecting means according to claim 13 in which the pressure, comprising spraying a pressurized air 100 [kPa] ~500 [kPa] A seasoning device according to any one of 1 to 16 is provided.

  According to the present invention, the pressure of the pressurized air ejected from the pressurized air ejecting means is set to 100 [kPa] to 500 [kPa].

The invention according to claim 18, in order to achieve the above object, the installation interval of said pressurized air injection means, 100 [mm / piece] 300 claims, characterized in that a [mm / piece] 13 The seasoning apparatus as described in any one of 1 to 17 is provided.

  According to the present invention, the installation interval of the pressurized air injection means is set to 100 [mm / piece] to 300 [mm / piece].

The invention according to claim 19, in order to achieve the above object, the installation interval of said blowing means, 100 [mm / piece] 300 from claim 13, characterized in that it is [mm / piece] 18 A seasoning apparatus according to any one of the above is provided.

  According to the present invention, the installation interval of the air blowing means is set to 100 [mm / piece] to 300 [mm / piece].

The invention according to claim 20 is the paper according to any one of claims 13 to 19 , wherein the paper laminated on the mounting table is ink-jet printed paper to achieve the object. The seasoning apparatus described in 1. is provided.

  According to the present invention, ink-jet printed paper is laminated on the mounting table and seasoned.

In the invention according to claim 21 , in order to achieve the above object, the paper laminated on the mounting table is paper that has been inkjet printed using a water-based ink containing a thermoplastic resin and a coloring material. A seasoning device according to claim 20 is provided.

  According to the present invention, paper that has been ink-jet printed using water-based ink containing a thermoplastic resin and a color material is laminated on the mounting table and seasoned.

According to a twenty-second aspect of the present invention, in order to achieve the above object, the paper laminated on the mounting table is a paper on which ink-jet printing has been performed using an aqueous ink containing an actinic ray curable resin and a coloring material. The seasoning apparatus according to claim 20 , wherein the seasoning apparatus is provided.

  According to the present invention, paper that has been ink-jet printed using an aqueous ink containing an actinic ray curable resin and a color material is laminated on the mounting table and seasoned.

In order to achieve the object, the invention according to claim 23 is provided with detection means for detecting the height of the paper stacked on the mounting table, and the moving means is responsive to a detection result of the detection means. The seasoning device according to any one of claims 13 to 22 , wherein the moving stroke of the pressurized air injection means is variable.

  According to the present invention, the moving stroke of the pressurized air ejecting means is adjusted according to the changed paper height.

In order to achieve the above object, the invention according to claim 24 is provided so as to be movable in a direction parallel to the laminating direction of the paper stacked on the mounting table, and stacked on the mounting table. a paper pressing plate to suppress the upper surface of the, according to the number of paper stacked on the mounting table, claim 23, characterized in that and a paper holding plate moving means for moving the paper holding plate The seasoning apparatus described in 1. is provided.

  According to the present invention, the top surface of the paper is seasoned while being restrained by the paper restraining plate. Then, when seasoning is started with the upper surface of the paper stacked on the paper mounting table as a reference, the installation position of the paper holding plate is adjusted according to the number of paper sheets.

  According to the present invention, the laminated sheets can be seasoned efficiently.

The top view showing one Embodiment of the seasoning apparatus to which this invention was applied The side view showing one Embodiment of the seasoning apparatus to which this invention was applied A graph showing the change over time in the amount of residual water in the image area and non-image area of the printed paper Illustration of seasoning method Table showing seasoning results

  Hereinafter, preferred embodiments of a seasoning method and apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

[Device configuration]
1 and 2 are a plan view and a side view, respectively, showing an embodiment of a seasoning apparatus to which the present invention is applied.

  As shown in the figure, the seasoning device 10 according to the present embodiment includes a mounting table 12 on which paper P is stacked and placed, and air toward the end surface of the paper P stacked on the mounting table 12. , Two air nozzles 16, 16 for injecting pressurized air toward the end surface of the paper P stacked on the mounting table 12, two air nozzles 16, An air nozzle lifting and lowering device 18 that moves up and down 16, a paper holding plate 20 that holds down the upper surface of the paper P stacked on the mounting table 12, a paper holding plate lifting and lowering device 22 that moves the paper holding plate 20 up and down, and a mounting table 12 includes a height detection device 24 that detects the height of the paper P stacked on the paper 12 and a control device 26 that controls the operation of the entire device.

  The mounting table 12 is formed in a rectangular flat plate shape, and the paper P is stacked and mounted on the horizontal upper surface thereof. On the mounting table 12, a pair of partition walls 28, 28 are erected vertically on both sides of the portion on which the paper P is placed. The pair of partition walls 28, 28 is provided in parallel with the short side of the paper P stacked and placed on the mounting table 12, and the paper P is stored between the pair of partition walls 28, 28. It is done.

  The three blower fans 14, 14, 14 are installed on the mounting table 12, and are arranged in parallel in the lateral direction (direction perpendicular to the stacking direction of the paper P) with a certain interval. Each blower fan 14, 14, 14 is arranged such that its blower surface (surface from which air is blown out) faces the end face of the paper P laminated on the placement table 12 (of the placement table 12). Air is blown vertically toward the end surface of the paper P stacked on the mounting table 12.

  The two air nozzles 16 and 16 are arranged in parallel in a horizontal direction (a direction perpendicular to the stacking direction of the paper P) with a certain interval on a vertically raising and lowering arm 30. The air nozzles 16, 16 are arranged so that their injection ports face the end surface of the paper P stacked on the mounting table 12 (the air injection direction is stacked on the mounting table 12. It is arranged so as to be orthogonal to the long side of the paper P.), and is arranged between adjacent blower fans 14, 14, 14 (between the right blower fan and the central blower fan). In addition, it is arranged between the left blower fan and the central blower fan, and is arranged in a symmetrical position with the central blower fan in between. The air nozzles 16, 16 inject pressurized air vertically from between the adjacent blower fans 14, 14, 14 toward the end face of the paper P stacked on the mounting table 12. Therefore, the pressurized air is jetted onto the same surface as the surface where the blower fans 14, 14 and 14 blow air.

  Note that the pressurized air injected from each air nozzle 16, 16 is supplied from an air compressor 80. Each air nozzle 16, 16 is connected to an air compressor 80 via an air supply pipe 82, and pressurized air is supplied from the air compressor 80 via this air supply pipe 82.

  The air nozzle lifting and lowering device 18 moves the lifting arm 30 provided with the air nozzles 16 and 16 up and down in the stacking direction (vertical direction) of the paper P. The air nozzle lifting and lowering device 18 moves up and down along a base 32, a column 34 that stands vertically on the base 32, a pair of guide rails 36 and 36 provided on the column 34, and the guide rails 36 and 36. Sliders 38, 38, a lifting body 40 fixed to the sliders 38, 38, a screw rod 42 disposed between the guide rails 36, 36, a nut member 44 screwed into the screw rod 42, and a screw rod And an air nozzle lifting / lowering motor 46 that rotates and drives 42.

  The base 32 is formed in a rectangular flat plate shape, and a column 34 is erected vertically on the upper surface thereof (parallel to the stacking direction of the paper P).

  The support | pillar 34 is formed in the rectangular plate shape, and the guide surface is formed in the front. And this guide surface is arrange | positioned so that one end surface (left end surface in FIG. 1) of the paper P mounted on the mounting base 12 may be opposed.

  The pair of guide rails 36 and 36 are disposed on the guide surface of the support column 34 with a constant interval, and both are disposed in parallel with the stacking direction of the paper P.

  The sliders 38 and 38 are slidably provided along the guide rails 36 and 36.

  The elevating body 40 is formed in a rectangular flat plate shape, and sliders 38 are fixed to the back surface thereof. The lift arm 30 has a base end portion fixed to the front portion of the lift body 40 and is held horizontally.

  The screw rod 42 is disposed between the pair of guide rails 36 and 36 and is provided in parallel with the guide rails 36 and 36. A lower end portion of the screw rod 42 is rotatably supported by a bearing 48 provided on the base 32.

  The nut member 44 is screwed to the screw rod 42 and is fixed to the back surface portion of the elevating body 40. Thereby, if the screw rod 42 is rotated, the raising / lowering body 40 will move up and down according to the rotation direction.

  The air nozzle lifting / lowering motor 46 is fixed to a bracket 50 provided horizontally at the upper end of the column 34. The upper end of the screw rod 42 is connected to the output shaft of the air nozzle lifting / lowering motor 46.

  The air nozzle lifting / lowering device 18 is configured as described above. When the air nozzle lifting / lowering motor 46 is driven, the lifting / lowering body 40 is lifted / lowered along the guide rails 36 and 36, and as a result, the lifting / lowering arm 30 is lifted / lowered. As the lifting arm 30 moves up and down, the air nozzles 16 and 16 reciprocate in parallel with the stacking direction of the paper P stacked on the mounting table 12.

  The paper holding plate 20 is formed in a rectangular flat plate shape slightly smaller than the size of the paper P stacked on the mounting table 12, and is horizontally above the mounting table 12 (parallel to the upper surface of the mounting table 12). is set up.

  The paper holding plate elevating device 22 moves the paper holding plate 20 up and down in the stacking direction (up and down direction) of the paper P. The paper holding plate lifting / lowering device 22 has substantially the same configuration as the air nozzle lifting / lowering device 18, and includes a base 52, a support column 54 erected vertically on the base 52, and a pair of guide rails 56 provided on the support column 54. , 56, sliders 58, 58 moving up and down along the guide rails 56, 56, a lifting body 60 fixed to the sliders 58, 58, a screw rod 62 disposed between the guide rails 56, 56, and screws A nut member 64 screwed to the rod 62 and a paper holding plate raising / lowering motor 66 for rotating the screw rod 62 are configured.

  The base 52 is formed in a rectangular flat plate shape, and a column 54 is erected vertically on the upper surface thereof (parallel to the stacking direction of the paper P).

  The support | pillar 54 is formed in the rectangular plate shape, and the guide surface is formed in the front. And this guide surface is arrange | positioned so as to oppose one end surface (right end surface in FIG. 1) of the paper P mounted on the mounting base 12. FIG.

  The pair of guide rails 56, 56 are arranged on the guide surface of the column 54 with a constant interval, and are both arranged in parallel with the stacking direction of the paper P.

  The sliders 58 and 58 are slidably provided along the guide rails 56 and 56.

  The elevating body 60 is formed in a rectangular flat plate shape, and sliders 58 and 58 are fixed to the back surface thereof. The paper holding plate 20 is fixed to the tip of a connecting arm 72 that extends horizontally from the front portion of the lifting body 60 and is held horizontally.

  The screw rod 62 is disposed between the pair of guide rails 56 and 56, and is provided in parallel with the guide rails 56 and 56. A lower end portion of the screw rod 62 is rotatably supported by a bearing 68 provided on the base 52.

  The nut member 64 is screwed to the screw rod 62 and is fixed to the back surface portion of the elevating body 60. Thereby, when the screw rod 62 is rotated, the elevating body 60 moves up and down according to the rotation direction.

  The paper holding plate raising / lowering motor 66 is fixed to a bracket 70 provided horizontally at the upper end of the column 54. The upper end of the screw rod 62 is connected to the output shaft of the paper holding plate lifting / lowering motor 66.

  The paper holding plate lifting / lowering device 22 is configured as described above. When the paper holding plate lifting / lowering motor 66 is driven, the lifting / lowering body 60 moves up and down along the guide rails 56 and 56. As a result, the paper holding plate 20 The paper P is reciprocated in parallel with the stacking direction of the paper P stacked on the mounting table 12.

  Note that a slit 28 is formed at one of the partition walls 28 (the partition wall on the left side in FIG. 1) erected on the mounting table 12 at a substantially central position parallel to the stacking direction of the paper P. The connecting arm 72 moves up and down through this slit.

  The height detection device 24 detects the height (position of the uppermost paper) of the paper P stacked and placed on the placement table 12. The height detection device 24 is configured by, for example, a line sensor arranged in parallel with the stacking direction of the paper P.

  The control device 26 includes a CPU, a ROM, and a RAM, executes a predetermined control program stored in the ROM, and controls the overall operation of the seasoning device. The control device 26 is connected to a monitor (not shown) and an input device (keyboard, mouse, touch panel, etc.), and displays necessary information (paper) via the input device. The number of sheets can be entered.

[Seasoning method]
Next, the seasoning method of the laminated paper by the seasoning apparatus of this Embodiment comprised as mentioned above is demonstrated.

  Here, the case of seasoning a paper printed by an ink jet printer will be described.

  First, the seasoning after printing will be outlined.

  Paper printed with an inkjet printer has a large amount of water in the image area. For this reason, an ink jet printer is usually provided with a drying unit for drying the printed paper.

  However, even after drying, the printed paper is not completely dried, and moisture remains in the image area. On the other hand, the non-image area becomes excessively dry.

  If such printed paper is left unattended, as shown in FIG. 3, the remaining water amount in the image area and the remaining water amount in the non-image area are adapted to the leaving environment and become the same remaining water amount. This process of adjusting the moisture absorption state of the paper to the leaving environment is called seasoning, and the time until the moisture absorption state of the paper adjusts to the leaving environment, that is, the remaining water amount in the image area and the remaining water amount in the non-image area is determined as the leaving environment. The time until familiarization is called seasoning time.

  When the paper is laminated, seasoning progresses in the surface layer portion, but seasoning stagnates except in the surface layer portion. As a result, it takes time until the moisture absorption state of the entire paper is adapted to the leaving environment.

  Therefore, in the seasoning apparatus 10 of the present embodiment, the seasoning of the stacked paper is advanced by seasoning the stacked paper as follows, and the seasoning time is shortened.

  In the seasoning device 10 of the present embodiment, air is blown from the blower fans 14, 14, 14 toward the end surface of the stacked paper P, and at the same time, the air nozzles 16, 16 reciprocate in a direction parallel to the stacking direction of the paper P. While moving, pressurized air is jetted toward the end face of the stacked paper P. By injecting pressurized air from the air nozzles 16, 16, a gap can be forcibly formed between the stacked sheets of paper, whereby the air blown from the blower fans 14, 14, 14 Can be sufficiently passed to the inside of the laminated paper P, and the seasoning inside can be promoted.

  Hereinafter, the seasoning method using the seasoning apparatus 10 of the present embodiment will be described in detail.

  First, the paper P to be seasoned is stacked on the mounting table 12 and placed. Here, since the paper P printed by the ink jet printer is seasoned, the paper P printed by the ink jet printer is stacked and placed on the mounting table 12. Here, the number of stacked sheets P is input to the control device 26 via the input device.

  When the apparatus is driven after placing the paper P, first, the height of the placed paper P is detected by the height detection device 24. This detection result is output to the control device 26. Based on the detection result of the height detection device 24, the control device 26 is separated from the upper surface of the paper P by a predetermined distance according to the number of the paper P stacked on the paper P, as shown in FIG. Move to a position at a constant speed.

  At the same time, the blower fans 14, 14, 14 are driven, and air is blown from the blower fans 14, 14, 14 at a predetermined air volume toward the end surface of the paper P stacked on the mounting table 12.

  At the same time, the air nozzles 16 and 16 are driven, and pressurized air with a predetermined pressure is ejected from the air nozzles 16 and 16 toward the end surface of the paper P stacked on the mounting table 12.

  Simultaneously with the driving of the air nozzles 16, 16, the air nozzle lifting / lowering device 18 is driven, and the air nozzles 16, 16 are reciprocated in the stacking direction of the paper P stacked on the mounting table 12.

  As a result, the air nozzles 16 and 16 are reciprocated in the stacking direction of the paper P, and pressurized air is jetted toward the end surface of the paper P.

  In this way, air is blown from the blower fans 14, 14, 14, and pressurized air is jetted from the air nozzles 16, 16, so that air is interposed between the stacked papers as shown in FIG. The spacing between the stacked and stacked papers increases. As a result, the height of the paper P increases.

  The control device 26 adjusts the position of the paper holding plate 20 in accordance with the number of papers P stacked and placed on the mounting table 12, and suppresses the upper surface of the paper P, thereby blowing off the paper P. To prevent.

  Further, the control device 26 adjusts the movement strokes of the air nozzles 16 and 16 based on the height of the paper P detected by the height detection device 24. That is, the movement strokes of the air nozzles 16 and 16 are adjusted so that the air nozzles 16 and 16 reciprocate within the range where the paper P exists.

  Here, the bottom dead center of the movement stroke of the air nozzles 16 and 16 is the position of the lowermost paper, and the top dead center is the position of the uppermost paper. Since the position of the lowermost paper is fixed, the height position of the paper P detected by the height detection device 24 becomes the top dead center of the movement stroke.

  Thus, in the seasoning device 10 of the present embodiment, the blower fan 14, while jetting pressurized air from the air nozzles 16, 16 reciprocating in the stacking direction of the stacked paper P toward the end surface of the paper P, Air is blown from 14, 14 to season the stacked paper P.

  When seasoning is performed in this manner, it is possible to forcibly widen the interval between the sheets stacked with the pressurized air ejected from the air nozzles 16 and 16. And by expanding the space between the papers thus laminated, the air blown from the blower fans 14, 14 and 14 can be passed to the inside of the paper, and the seasoning other than the surface layer is also promoted. can do. Thereby, the laminated paper P can be seasoned in a short time.

  Such an effect is particularly effective when seasoning ink jet printed paper. In other words, the ink-jet printed paper has a large amount of water in the image area, and it takes time until the remaining water volume in the image area and the remaining water volume in the non-image area are adapted to the environment. As a result, the entire printing process can be shortened. In particular, when performing double-sided printing, it is possible to reduce the waiting time until the back side printing (= seasoning time) by seasoning with the method of the present invention after printing on the front surface, and greatly reducing the overall printing time. Can do.

  Also, so-called water-based inks (for example, ink containing water in a solvent and containing a thermoplastic resin and a coloring material, or ink containing water in a solvent and containing an actinic ray curable resin and a coloring material) are used. In particular, when ink jet printing is performed, the amount of water in the image area is increased, so that seasoning can be performed efficiently in a short time by seasoning with the method of the present invention.

[Optimization of various conditions]
The table shown in FIG. 5 shows that, in the seasoning device 10 of the present embodiment, after the printing, the air nozzle reciprocating speed, the pressure of the pressurized air ejected from the air nozzle, and the static pressure of the blower fan are changed. 5 is a table showing the results of seasoning time and the presence or absence of scratches on the printed matter when seasoning the laminated paper.

  In this case, 100 sheets of chrysanthemum half-size paper on which a predetermined image is inkjet-printed on one side are laminated and seasoned.

  The seasoning time is set to be completed in 10 minutes.

  As shown in the table in the figure, regarding the reciprocating transfer speed of the air nozzle, if the moving speed is less than 100 [mm / s], sufficient paper space cannot be obtained, so the seasoning time exceeds the target of 10 minutes. It was confirmed that. Further, even when the moving speed exceeds 1000 [mm / s], it is confirmed that the seasoning time exceeds the target of 10 minutes because sufficient paper space cannot be obtained.

  In addition, with respect to the pressure of the pressurized air ejected from the air nozzle, it was confirmed that when the pressure falls below 100 [kPa], a sufficient space between the sheets cannot be obtained, so that the seasoning time exceeds the target 10 minutes. . On the other hand, it was confirmed that when the pressure exceeds 500 [kPa], the image is scratched (scratches and angular breaks) in the image portion because the paper is strongly suppressed by the restraining plate.

  As for the static pressure of the blower fan, it was confirmed that when the static pressure was less than 200 Pa, the blown air could not be ventilated well between the papers, so that the seasoning time exceeded the target 10 minutes. . On the other hand, it was confirmed that when the static pressure of the blower fan exceeds 2000 [Pa], the printed matter is damaged by the paper being strongly restrained by the restraining plate.

  From the above, for the air nozzles 16 and 16, the reciprocating movement speed is preferably set to 100 [mm / s] to 1000 [mm / s]. If the moving speed of the reciprocating movement is too slow, the air between the papers will escape, and if it is too fast, it will try to widen the upper paper before the paper is sufficiently widened. This is because it suppresses the spread.

  In addition, the pressure of the pressurized air ejected from the air nozzles 16 and 16 is preferably set to 100 [kPa] to 500 [kPa]. This is because if the pressure of the pressurized air is too low, the force to spread the paper is weak, and it is not possible to sufficiently widen the paper, and if the pressure of the pressurized air is too high, it can be suppressed by the paper holding plate. This is because there is a problem that the paper is blown away or the paper is strongly pressed against the paper holding plate and the printed matter is damaged.

  Moreover, about the ventilation fans 14, 14, and 14, it is preferable to use the fan whose static pressure is 200 [Pa] -2000 [Pa]. This is because if the static pressure is too low, the blown air cannot be blown out due to the pressure loss caused by the paper, and if the static pressure is too high, the paper may be blown away even if the paper is suppressed by the paper holding plate. This is because there is a problem that the printed matter is scratched by being strongly pressed against the paper holding plate.

  The blower fans 14, 14, 14 are configured to be able to blow air to all the sheets in the stacking direction that are stacked on the mounting table 12. As described above, since the paper P stacked and placed on the mounting table 12 receives air blowing, the air enters between the papers and increases in height. Even in the state, it is configured so that air can be blown to all the papers in the stacking direction. Therefore, when air cannot be blown to the end faces of all the papers in the stacking direction with a single blower fan, a plurality of blower fans are arranged in tandem in the paper stacking direction.

  In addition, it is preferable that the arrangement | positioning space | interval of the ventilation fan in the direction parallel to the lamination direction of paper shall be 300 [mm / piece] or less. This is because if it exceeds 300 [mm / piece], drying unevenness occurs due to the distribution of the drying air. The lower limit value is not particularly limited, but if the arrangement interval is narrowed, the number of arrangements increases and the cost of the apparatus increases.

  The air nozzles are preferably installed at intervals of 100 [mm / piece] to 300 [mm / piece]. This is because if it is less than 100 [mm / piece], drying proceeds to below the ambient air by the pressurized air dehumidified from the ambient air, which is not preferable. On the other hand, when it exceeds 300 [mm / piece], a sufficient paper space cannot be obtained, and the seasoning time becomes long.

  Note that a plurality of air nozzles may be arranged at regular intervals in the paper stacking direction. In this case, it is preferable to adjust the movement stroke so that the upper and lower air nozzles do not overlap the air injection range.

  In the above embodiment, air is blown to one end face of the stacked paper P. However, air may be blown to a plurality of end faces. Similarly, pressurized air may be jetted onto a plurality of end faces.

  Moreover, in the said embodiment, although the air nozzle raising / lowering apparatus 18 for reciprocating the air nozzle is comprised by what is called a feed screw mechanism, the structure of an air nozzle raising / lowering apparatus is not limited to this, In addition, The air nozzle may be reciprocated by a cylinder or a linear motor. The same applies to the paper holding plate lifting device 22.

  Moreover, in the said embodiment, although it is set as the structure which detects the height of the paper mounted in the mounting base 12 with a line sensor, the structure which detects the height of the paper mounted in the mounting base 12 is this. It is not limited to. In addition, the height of the paper may be detected by arranging sensors for detecting the presence or absence of the paper in a row in the paper stacking direction with a certain interval.

  The paper holding plate moves at a predetermined speed to a predetermined height corresponding to the number of input paper P after the apparatus is driven. Here, the predetermined height is a height obtained by multiplying the number of sheets by an interval between sheets that can obtain a sufficient seasoning effect, and the preferable interval between sheets is 0.2 [mm] to 1.0 [mm]. It is preferable to set the height multiplied by the number of sheets. The predetermined speed is a speed at which the paper holding plate is moved without blowing the paper and without damaging the paper. The thickness of the paper is in the range of 5 [mm / s] to 50 [mm / s]. It is preferable to set as appropriate.

  As another control method of the paper holding plate, a sensor for detecting the pressure received from the paper may be provided, and the position may be automatically adjusted so that the pressure received from the paper becomes constant.

  P: Paper, 10: Seasoning device, 12: Mounting table, 14: Blower fan, 16: Air nozzle, 18 ... Air nozzle lifting device, 20 ... Paper holding plate, 22 ... Paper holding plate lifting device, 24 ... Height detecting device, DESCRIPTION OF SYMBOLS 26 ... Control apparatus, 28 ... Bulkhead, 30 ... Elevating arm, 32 ... Base, 34 ... Column, 36 ... Guide rail, 38 ... Slider, 40 ... Elevating body, 42 ... Screw rod, 44 ... Nut member, 46 ... Air nozzle raising / lowering Motor, 48 ... bearing, 50 ... bracket, 52 ... base, 54 ... support, 56 ... guide rail, 58 ... slider, 60 ... lifting body, 62 ... screw rod, 64 ... nut member, 66 ... up and down for paper holding plate Motor 68 ... Bearing 70 ... Bracket 72 ... Connecting arm 80 ... Air compressor

Claims (24)

In the seasoning method for seasoning laminated paper,
The pressurized air ejecting means while reciprocating a pressurized air ejecting means for ejecting pressurized air vertically toward one end face of the laminated paper in a direction parallel to the laminating direction of the laminated paper. Is a seasoning method in which air is blown vertically from the blowing means toward the same end face as the end face of the paper that injects pressurized air ,
A plurality of the air blowing means are arranged in parallel along an end surface of the paper on which the pressurized air ejecting means ejects pressurized air, and the pressurized air ejecting means is arranged between the adjacent air blowing means. Seasoning method. Seasoning according to claim 1, wherein the pressurized air injection means along the direction for injecting the pressurized air is arranged in parallel with a pair of partition walls, characterized by placing the paper between the pair of partition wall Method. The seasoning method according to claim 1 or 2 , wherein a moving speed of the pressurized air injection means is 100 [mm / s] to 1000 [mm / s]. The seasoning method according to any one of claims 1 to 3 , wherein a static pressure of a fan used for the blowing unit is 200 [Pa] to 2000 [Pa]. The seasoning method according to any one of claims 1 to 4 , wherein the pressure of the pressurized air ejected from the pressurized air ejecting means is 100 [kPa] to 500 [kPa]. The seasoning method according to any one of claims 1 to 5 , wherein an installation interval of the pressurized air injection means is 100 [mm / piece] to 300 [mm / piece]. The seasoning method according to any one of claims 1 to 6 , wherein an installation interval of the blowing means is 100 [mm / piece] to 300 [mm / piece]. Seasoning method according to any of claims 1 7, characterized in that the seasoning by laminating ink jet printed paper. The seasoning method according to claim 8 , wherein the seasoning is performed by laminating paper on which ink jet printing has been performed using an aqueous ink containing a thermoplastic resin and a color material. The seasoning method according to claim 8 , wherein the seasoning is performed by laminating ink-jet printed paper using an aqueous ink containing an actinic ray curable resin and a color material. Wherein detecting the stacked height of the paper detecting means, in accordance with the detected height, any one of claims 1 to 10, characterized in varying the stroke of movement of the pressurized air injection means The seasoning method according to Item. 12. The seasoning method according to claim 11 , wherein an upper surface of the stacked paper is held by a paper holding plate, and the position of the paper holding plate is changed according to the number of the stacked paper. In a seasoning device for seasoning laminated paper,
A mounting table on which paper is stacked and mounted;
Pressurized air injection means for vertically injecting pressurized air toward one end face of the paper laminated on the mounting table;
Moving means for reciprocating the pressurized air ejecting means in a direction parallel to the laminating direction of the paper laminated on the mounting table;
Blower means for blowing air vertically toward the same end face as the end face of the paper on which the pressurized air ejecting means ejects pressurized air with respect to the paper laminated on the mounting table,
A plurality of the air blowing means are arranged in parallel along an end surface of the paper on which the pressurized air ejecting means ejects the pressurized air, and the pressurized air ejecting means are disposed between the adjacent air blowing means. A seasoning device characterized by being arranged . 14. The apparatus according to claim 13 , further comprising a pair of partition walls arranged in parallel along a direction in which the pressurized air ejecting means ejects pressurized air, wherein the paper is disposed between the pair of partition walls. The seasoning device described in 1. The seasoning device according to claim 13 or 14 , wherein the moving means reciprocates the pressurized air injection means at a moving speed of 100 [mm / s] to 1000 [mm / s]. The seasoning device according to any one of claims 13 to 15 , wherein the blowing unit is a fan having a static pressure of 200 [Pa] to 2000 [Pa]. The seasoning device according to any one of claims 13 to 16 , wherein the pressurized air injecting means injects pressurized air having a pressure of 100 [kPa] to 500 [kPa]. The seasoning apparatus according to any one of claims 13 to 17 , wherein an installation interval of the pressurized air injection means is 100 [mm / piece] to 300 [mm / piece]. The seasoning apparatus according to any one of claims 13 to 18 , wherein an installation interval of the air blowing means is 100 [mm / piece] to 300 [mm / piece]. The seasoning apparatus according to any one of claims 13 to 19 , wherein the paper stacked on the mounting table is paper that has been inkjet printed. 21. The seasoning apparatus according to claim 20 , wherein the paper stacked on the mounting table is paper that has been ink-jet printed using a water-based ink containing a thermoplastic resin and a color material. 21. The seasoning apparatus according to claim 20 , wherein the paper laminated on the mounting table is paper that has been ink-jet printed using an aqueous ink containing an actinic ray curable resin and a color material. Comprising a detecting means for detecting the height of the paper stacked on the mounting table,
The seasoning apparatus according to any one of claims 13 to 22 , wherein the moving unit varies a moving stroke of the pressurized air injection unit in accordance with a detection result of the detecting unit. A paper holding plate that is provided so as to be movable in a direction parallel to the stacking direction of the paper stacked on the mounting table, and suppresses the upper surface of the paper stacked on the mounting table;
A paper holding plate moving means for moving the paper holding plate according to the number of sheets stacked on the mounting table;
The seasoning apparatus according to claim 23 , comprising:

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