JP6129012B2 - Recording medium heating apparatus, recording medium pre-processing apparatus, and printing system - Google Patents

Description

  The present invention relates to a recording medium heating apparatus, a recording medium pretreatment apparatus, and a printing system.

  For example, a rotary press having a drying device that transports a recording medium on which an image is printed with ink or the like over a plurality of staggered heating rollers and heats the recording medium to dry is known (for example, Patent Document 1).

  However, in the drying apparatus in Patent Document 1, since it is necessary to hang a recording medium on a plurality of heating rollers arranged in a staggered manner, operations such as loading of the recording medium and maintenance during jamming may be complicated. . Therefore, among the plurality of heating rollers, a first heating frame having a heating roller for heating the first surface of the recording medium and a second heating frame having a heating roller for heating the second surface of the recording medium can be opened and closed. By providing, it is conceivable to facilitate work such as maintenance.

  Here, if the heating roller is displaced during heating of the recording medium, it becomes difficult to uniformly heat the entire recording medium. Therefore, when the first heating frame and the second heating frame are configured to be openable and closable, the first heating frame and the second heating frame are closed so that the heating roller is not displaced when the recording medium is heated. A fixing mechanism for fixing with is required. Further, it is desirable that the fixing mechanism has a simple configuration capable of easily performing a fixing operation in order to maintain workability.

  The present invention has been made in view of the above, and provides a recording medium heating apparatus capable of fixing a first heating means and a second heating means, which can be opened and closed, in a closed state with a simple configuration. For the purpose.

  According to the recording medium heating apparatus of one aspect of the present invention, the first heating unit that heats the conveyed recording medium from one side, the second heating unit that heats the recording medium from the other side, An opening / closing means for holding the first heating means and the second heating means so as to be openable and closable, and a rotatable opening and closing means, wherein the first heating means and the second heating means are closed. And a positioning shaft abutting on the second heating means, and provided in the positioning shaft, the first heating means and the second heating means being closed, and rotating together with the positioning shaft, the first And a fixing member fitted to a fixed shaft provided in each of the heating means and the second heating means.

  According to the embodiment of the present invention, it is possible to provide a recording medium heating apparatus capable of fixing a first heating means and a second heating means provided so as to be openable and closable with a simple configuration while being easily closed.

1 is a diagram illustrating a schematic configuration of a printing system according to an embodiment. It is a figure which illustrates schematic structure of the pretreatment liquid application device concerning an embodiment. It is a figure which illustrates the heating unit which concerns on embodiment. It is a figure which illustrates the heating unit in the state where the main body frame was removed. It is a figure which illustrates a mode that a 1st heating frame and a 2nd heating frame are opened. It is a figure which illustrates the state where the 1st heating frame and the 2nd heating frame opened. It is a figure which illustrates schematic structure of the heating frame fixing mechanism in embodiment. It is a figure which illustrates the state where the heating frame was fixed by the fixing member. It is a figure which illustrates the state by which the heating frame was cancelled | released. It is a figure which illustrates the structure of a rotation prevention mechanism. It is a figure which illustrates the structure of the rotation prevention member at the time of fixation, and a fixing member. It is a figure which illustrates the composition of a fixing member and an adjustment member.

  Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description may be omitted.

  FIG. 1 is a diagram illustrating a schematic configuration of a printing system 100 according to the embodiment.

  As shown in FIG. 1, the printing system 100 includes a paper feeding device 110, a pretreatment liquid coating device 120, a first inkjet printer 130, a reversing device 140, a second inkjet printer 150, a post-drying device 160, and a winding device 170. Have.

  The paper feeding device 110 supplies the recording medium 10 such as a long continuous paper wound in a roll shape to a pretreatment liquid coating device 120 provided in a subsequent stage.

  The pretreatment liquid coating apparatus 120 is an example of a recording medium pretreatment apparatus, and in order to suppress bleeding and show-through of the inkjet ink discharged to the recording medium 10 by the first inkjet printer 130 and the like at the subsequent stage, A pretreatment liquid is applied to the surface. The pretreatment liquid coating apparatus 120 discharges the recording medium 10 to the first inkjet printer 130 at the subsequent stage after heating and drying the pretreatment liquid applied to the recording medium 10.

  The first inkjet printer 130 forms a desired image by ejecting ink droplets on the first surface (front surface) of the recording medium 10 coated with the pretreatment liquid in the pretreatment liquid coating apparatus 120 based on the image data. .

  The reversing device 140 reverses the front and back of the recording medium 10 and conveys the reversed recording medium 10 to the second inkjet printer 150 at the subsequent stage. The reversing device 140 includes a dryer (not shown) as a drying unit, and dries the image on the front side of the recording medium 10 formed by the first ink jet printer 130.

  The second ink jet printer 150 forms a desired image by ejecting ink droplets on the second surface (the back surface before reversal) of the recording medium 10 whose front and back are reversed by the reversing device 140 based on the image data.

  The post-drying device 160 has a dryer as a drying means, and dries the images formed on both surfaces of the recording medium 10 with hot air from the dryer.

  The winding device 170 winds and collects the recording medium 10 on which an image is formed on one side or both sides, and the post-drying device 160 dries the ink on the image forming surface.

  FIG. 2 is a diagram illustrating a schematic configuration of the pretreatment liquid coating apparatus 120 according to the embodiment.

  As shown in FIG. 2, the pretreatment liquid coating apparatus 120 includes an air loop unit 20, a pretreatment liquid coating unit 30, a pretreatment liquid supply unit 40, a heating unit 50, and a dancer unit 80.

  The air loop unit 20 includes a guide roller 21 that is rotatably supported, a feed-in (FI) roller 22 that sandwiches and conveys the recording medium 10, and an FI nip roller 23.

  In the air loop unit 20, the guide roller 21, the rotationally driven FI roller 22, and the driven rotated FI nip roller 23 convey the recording medium 10 supplied from the paper feeding device 110, and draw the recording medium 10 into the air loop unit 20. . At this time, the rotation of the FI roller 22 is controlled by an optical sensor (not shown) so that an air loop AL in which the amount of slack of the recording medium 10 is constant is formed. The recording medium 10 that has passed through the air loop AL is applied with a tension for conveying stabilization by a tension shaft (not shown), and is conveyed to the pretreatment liquid coating unit 30.

  The pretreatment liquid application unit 30 includes an infeed roller 31 that is rotationally driven, a feed nip roller 32 that sandwiches and conveys the recording medium 10 between the infeed roller 31, a back surface application unit 33, a front surface application unit 34, and an outfeed that is rotationally driven. A feed nip roller 36 that sandwiches and conveys the recording medium 10 between the roller 35 and the outfeed roller 35 is provided.

  The back surface application unit 33 includes a squeeze roller 37, an application roller 38, and a pressure roller 39. The recording medium 10 transported to the back surface coating unit 33 is moved to the second surface by the coating roller 38 when being sandwiched and transported between the coating roller 38 to which the pretreatment liquid is supplied by the squeeze roller 37 and the pressure roller 39. A pretreatment liquid is applied to the (back surface) side. The recording medium 10 that has passed through the back coating unit 33 is conveyed to the front coating unit 34.

  The surface application unit 34 includes a squeeze roller 47, an application roller 48, and a pressure roller 49, and applies the pretreatment liquid to the first surface (front surface) side of the recording medium 10. The recording medium 10 that has passed through the surface coating unit 34 is conveyed to the heating unit 50 by the outfeed roller 35 and the feed nip roller 36.

  The back coating unit 33 and the surface coating unit 34 are controlled so as to selectively operate, and the recording medium 10 is preprocessed on one or both of the first surface (front surface) and the second surface (back surface). Liquid is applied.

  The pretreatment liquid supply unit 40 stores the pretreatment liquid and appropriately supplies the pretreatment liquid to the back surface application unit 33 and the front surface application unit 34.

  The heating unit 50 is an example of a recording medium heating device, and heats the recording medium 10 to dry the pretreatment liquid applied to the recording medium. The heating unit 50 includes a first-stage back surface heating roller 521, a first-stage surface heating roller 511, a second-stage back surface heating roller 522, a second-stage surface heating roller 512, and a third stage from the upstream in the conveyance direction of the recording medium 10. A back surface heating roller 523 and a third stage surface heating roller 513 are provided.

  The heating rollers are staggered so as to be spaced apart from each other. In other words, the lines connecting the rotation centers of the back surface heating rollers 521, 522, and 523 and the lines connecting the rotation centers of the surface heating rollers 511, 512, and 513 are arranged in parallel and away from each other. Further, the front surface heating roller and the back surface heating roller are alternately arranged in the conveyance direction of the recording medium.

  Each heating roller contains a heater 71-76 such as a heater lamp. Moreover, each heating roller may incorporate a heat pipe, for example. With the heat pipe, heat is efficiently transmitted in the longitudinal direction of each heating roller, the temperature of the roller surface is made uniform, and efficient heat supply to the recording medium 10 becomes possible.

  The surface of each heating roller is coated with a non-adhesive film such as a fluororesin. By such coating, adhesion of ink or the like to the surface of the heating roller is suppressed, and a decrease in the efficiency of heat transfer to the recording medium 10 due to deposits on the surface of the heating roller is suppressed.

  Note that the number of heating rollers is not limited to the total of six in the three stages for surface heating and backside heating as described above. A total of 10 or more stages may be used.

  The recording medium 10 is conveyed in a zigzag manner in order on each heating roller. Each heating roller heats the conveyed recording medium 10 and dries the pretreatment liquid applied to the recording medium 10.

  The recording medium 10 on which the pretreatment liquid applied on the surface has been dried is sandwiched between a feed roller 59 and a feed nip roller 60 that are rotationally driven, and conveyed to a dancer unit 80.

  The dancer unit 80 includes two guide rollers 81 and 82, a movable frame 84, position detection means (not shown) for detecting the position of the movable frame 84, and two dancer rollers 85 and 86 rotatably attached to the movable frame 84. Have. The movable frame 84 is provided with a weight 83 at the bottom, and is movable along with the dancer rollers 85 and 86 in the direction of arrow A. The recording medium 10 is wound around the two guide rollers 81 and 82 and the two dancer rollers 85 and 86 in a W shape.

  The dancer unit 80 adjusts the vertical position of the movable frame 84 by controlling the transport amount of the feed roller 59 based on the output of the position detection means (not shown). By adjusting the position of the movable frame 84, a buffer of the recording medium 10 between the pretreatment liquid coating apparatus 120 and the first inkjet printer 130 at the subsequent stage is secured.

  The recording medium 10 heated by the heating unit 50 is cooled by the dancer unit 80 and then conveyed to the first inkjet printer 130 at the subsequent stage.

  Next, the heating unit 50 will be described with reference to the drawings.

  FIG. 3 is a diagram illustrating the heating unit 50 according to the embodiment, and FIG. 4 is a diagram illustrating the heating unit 50 with the main body frame 502 removed. In the following drawings, the X direction indicates the width direction of the heating unit 50, the Y direction indicates the depth direction of the heating unit 50, and the Z direction indicates the height direction of the heating unit 50.

  As shown in FIG. 3, the heating unit 50 includes an opening / closing means 501, a first heating frame 510, and a second heating frame 520. In the following description, the first heating frame 510 side is the upper side and the second heating frame 520 side is the lower side.

  The first heating frame 510 is an example of a first heating unit, and includes a first stage surface heating roller 511, a second stage surface heating roller 512, and a third stage surface heating roller 513, and the recording medium 10 is placed on the first surface. Heat from (surface). The second heating frame 520 is an example of a second heating unit, and includes a first stage back surface heating roller 521, a second stage back surface heating roller 522, and a third stage back surface heating roller 523, and the recording medium 10 is placed on the second surface. Heat from (back side). The first heating frame 510 and the second heating frame 520 are provided so as to be vertically movable in the Z direction by the opening / closing means 501.

  As shown in FIGS. 3 and 4, the opening / closing means 501 includes a main body frame 502, handles 503 and 504, and timing belts 571, 572, 573, and 574, and the first heating frame 510 and the second heating frame 520 are respectively provided. Move up and down to open and close.

  As shown in FIG. 4, the timing belt 571 is provided so as to be able to rotate around the upper pulley 531 and the lower pulley 541. Similarly, the timing belt 572 is provided on pulleys 532 and 542, the timing belt 573 is provided on pulleys 533 and 543, and the timing belt 574 is provided on a pulley 534 and a lower pulley (not shown) so as to be rotatable.

  The pulley 531 on the upper side of the timing belt 571 and the pulley 532 on the upper side of the timing belt 572 are fixed to a first synchronization shaft 575 that is rotatably provided on a main body frame 502 not shown in FIG. Since the pulleys 531 and 532 are fixed to the first synchronization shaft 575, the timing belt 571 and the timing belt 572 rotate synchronously and rotate by the same amount at the same timing.

  Further, the upper pulley 533 of the timing belt 573 and the upper pulley 534 of the timing belt 574 are fixed to a second synchronization shaft 576 that is rotatably provided on a main body frame 502 not shown in FIG. Since the pulleys 533 and 534 are fixed to the second synchronization shaft 576, the timing belt 573 and the timing belt 574 rotate synchronously and rotate by the same amount at the same timing.

  The first synchronization shaft 575 and the second synchronization shaft 576 are respectively provided with gears 577 and 578 fixed to end portions on the same side. A synchronous timing belt 579 is wound around the gears 577 and 578, and the first synchronous shaft 575 and the second synchronous shaft 576 are rotated in synchronization by the synchronous timing belt 579.

  As described above, the timing belts 571, 572, 573, and 574 are provided so as to rotate synchronously by the first synchronization shaft 575, the second synchronization shaft 576, and the synchronization timing belt 579. Therefore, when any one of the timing belts 571, 572, 573, and 574 rotates, the other three rotate in the same manner.

  Here, the timing belts 571, 572, 573, and 574 are respectively stretched around two pulleys, and are formed so that two stretched portions extending in the Z direction face each other in the X direction. In such a configuration, the first heating frame 510 and the handles 503 and 504 are provided on the first stretching portion on one side of the two stretching portions of the timing belts 571, 572, 573, and 574. It is fixed by 552, 553, etc. In addition, the second heating frame 520 is fixed to the second stretching portion on the other side of the two stretching portions of the timing belts 571, 572, 573, and 574 by fixing portions 561, 562, 563, and the like.

  Next, an opening / closing operation of the first heating frame 510 and the second heating frame 520 in the heating unit 50 will be described.

  5A and 5B are schematic views from the front of the heating unit 50. FIG. 5A is a closed state of the first heating frame 510 and the second heating frame 520, and FIG. 2 illustrates an open state of the heating frame 520.

  As shown in FIG. 5, the first heating frame 510 is fixed to the first stretched portion 572 a of the timing belt 572 and the first stretched portion 573 a of the timing belt 573. Similarly, the first heating frame 510 is fixed to a timing belt 571 (not shown in FIG. 5) and a first stretched portion of the timing belt 574.

  In addition, the second heating frame 520 is fixed to the second stretched portion 572b facing the first stretched portion 572a of the timing belt 572 and the second stretched portion 573b facing the first stretched portion 573a of the timing belt 573. Has been. Similarly, the second heating frame 520 is fixed to a timing belt 571 (not shown in FIG. 5) and a second stretching portion facing the first stretching portion of the timing belt 574.

  In such a configuration, the first heating frame 510 and the second heating frame 520 are opened and closed by moving the other heating frame up and down in synchronization with the movement of one heating frame up and down.

  The first heating frame 510 and the second heating frame 520 are changed from the closed state shown in FIG. 5A to the open state shown in FIG. 5B when the second heating frame 520 is pushed downward, for example. When the second heating frame 520 is pushed down, the timing belts 572 and 573 rotate in the direction of the arrow shown in FIG. 5B while being synchronized by the synchronous timing belt 579 as shown in FIG. 5B. To do. When the timing belts 572 and 573 rotate in this manner, the first heating frame 510 fixed to the first stretching portions 572a and 573a moves upward to be in an open state.

  When the second heating frame 520 is lifted upward from the open state, the timing belts 572 and 573 rotate in the direction opposite to the arrow shown in FIG. 5B, and the first heating frame 510 moves downward and moves to FIG. The closed state shown in FIG.

  As described above, the heating unit 50 opens and closes by moving one of the first heating frame 510 and the second heating frame 520 up and down in the opposite direction. Therefore, for example, when the recording medium 10 is loaded or when the recording medium 10 is jammed, as shown in FIG. 6, the first heating frame 510 and the second heating frame 520 are opened to perform loading or maintenance of the recording medium 10. It can be done easily.

  After loading and maintenance of the recording medium 10 in the open state, if the first heating frame 510 and the second heating frame 520 are closed, the recording medium 10 becomes the front surface heating rollers 511, 512, 513 and the back surface heating rollers 521, 522, 523. It becomes the state that can be operated.

  Next, a heating frame fixing mechanism that fixes the first heating frame 510 and the second heating frame 520 in a closed state will be described.

  FIG. 7 is a diagram illustrating a schematic configuration of the heating frame fixing mechanism in the embodiment, and shows a configuration excluding the first heating frame 510 and the second heating frame 520 of the heating unit 50.

  As shown in FIG. 7, the main body frame 502 is provided so that its axial direction can rotate substantially perpendicular to the conveyance direction of the recording medium 10, and abuts in a state where the first heating frame 510 and the second heating frame 520 are closed. Positioning shafts 580 and 581 are positioned. In the conveyance direction of the recording medium 10, the positioning shaft 580 is provided on the upstream side, and the positioning shaft 581 is provided on the downstream side.

  A handle 504 is fixedly provided at one end of the positioning shaft 580, and rotates when the handle 504 is operated. In addition, a handle 503 is fixedly provided at one end of the positioning shaft 581 and rotates when the handle 503 is operated.

  The positioning shafts 580 and 581 are provided with fixing members that fix the first heating frame 510 and the second heating frame 520 in a closed state at both ends. The positioning shaft 580 is provided with a fixing member 583 at the end on the handle 504 side, and a fixing member 584 at the end opposite to the handle 504. The positioning shaft 581 is provided with a fixing member 582 at the end on the handle 503 side and a fixing member 585 at the end opposite to the handle 503.

  The fixing members 582, 583, 584, and 585 are fixed to the positioning shafts 580 and 581, respectively, and rotate together with the positioning shafts 580 and 581 that rotate as the handles 503 and 504 are operated.

  FIG. 8 is a diagram illustrating a state in which the first heating frame 510 and the second heating frame 520 are fixed by the fixing member 582.

  The first heating frame 510 has a positioning member 515 at a position facing the positioning shaft 581. The second heating frame 520 has a positioning member 525 at a position facing the positioning shaft 581. The first heating frame 510 and the second heating frame 520 are positioned by being fixed while the positioning members 515 and 525 are in contact with the positioning shaft 581 in a closed state.

  The first heating frame 510 has a fixed shaft 516 that protrudes from the side surface in parallel with the positioning shaft 581 and is fixed above the positioning shaft 581. The second heating frame 520 has a fixed shaft 526 that protrudes from the side surface in parallel with the positioning shaft 581 and is fixed below the positioning shaft 581.

  The fixing member 582 is fixed to a positioning shaft 581 that is inserted into the insertion hole 582a, and rotates in the direction of the arrow together with the positioning shaft 581 that is rotated by operating a handle 503 (not shown in FIG. 8). The first heating frame 510 and the second heating frame 520 are fixed in a positioned state when the fixing member 582 rotates in a closed state and engages with both the fixed shafts 516 and 526.

  The fixing member 582 has a first groove portion 582b fitted to the fixed shaft 516 of the first heating frame 510 on one end side, and a second groove portion 582c fitted to the fixed shaft 526 of the second heating frame 520 on the other end side. The fixing member 582 rotates together with the positioning shaft 581 in a state where the first heating frame 510 and the second heating frame 520 are closed, and the first groove portion 582b is fixed to the fixed shaft 516 and the second groove portion 582c is fixed to the fixed shaft 526. To fit each.

  The first heating frame 510 and the second heating frame 520 are closed and positioned by fitting the fixing member 582 with both the fixing shaft 516 of the first heating frame 510 and the fixing shaft 526 of the second heating frame 520. Fixed in state.

  As shown in FIG. 9, when the handle 503 is rotated in the direction of the arrow, the fixing member 582 rotates together with the positioning shaft 581 and comes off the fixed shafts 516 and 526, and the first heating frame 510 and the second heating frame 520. The fixed state of is released.

  Although the configuration in which the fixing member 582 fixes the first heating frame 510 and the second heating frame 520 has been described, as shown in FIG. 7, the fixing members 583, 584, and 585 have the same configuration, and the first heating frame 510 and the second heating frame 520 have the same configuration. 2 Fix the heating frame 520.

  The first heating frame 510 and the second heating frame 520 are fixed at both ends by fixing members 582 and 583 on one end side and fixing members 584 and 585 on the other end side in the width direction of the recording medium 10. The first heating frame 510 and the second heating frame 520 are fixed by upstream fixing members 583 and 584 and downstream fixing members 582 and 583 in the conveyance direction of the recording medium 10.

  In this way, the first heating frame 510 and the second heating frame 520 are fixed and conveyed at both ends in the width direction of the recording medium 10 on the upstream side and the downstream side in the conveying direction of the recording medium 10, respectively. It will not be displaced by the tension. Accordingly, the plurality of heating rollers included in the first heating frame 510 and the second heating frame 520 are maintained at the set positions without being displaced during use, and the entire recording medium 10 can be uniformly heated.

  Here, if the fixing member rotates with the heating frame opened, the heating frame and the fixing member may collide when the heating frame is closed, and either one or both may be damaged. Therefore, the heating unit 50 is provided with a rotation preventing member that prevents the fixing member from rotating while the heating frame is opened.

  FIG. 10 is a diagram illustrating the configuration of the rotation prevention mechanism of the fixing member 582. As shown in FIG.

  The heating unit 50 is provided with a rotation preventing member 587 within the rotation range of the fixing member 582. The rotation preventing member 587 is provided so as to be rotatable in the direction of the arrow about a support shaft hole 587a into which a support shaft attached to the main body frame 502 is inserted, and upwardly toward the first heating frame 510 by an unillustrated biasing means. It is energized. The rotation preventing member 587 has a rotation preventing portion 587c that protrudes from the main body portion 587b in the X direction.

  The fixing member 582 includes a third groove 582d having an opening formed on the same side as the first groove 582b between the first groove 582b and the insertion hole 582a, and between the first groove 582b and the third groove 582d. A protrusion 582e is formed.

  FIG. 10 shows a state in which the first heating frame 510 and the second heating frame 520 that have been unlocked are opened. In this state, the rotation preventing member 587 is configured such that the rotation preventing portion 587c is a protrusion 582e of the fixing member 582. It is provided so as to face.

  With such a configuration, in a state where the first heating frame 510 and the second heating frame 520 are opened, the protruding portion 582e hits the rotation preventing portion 587c, and thus the fixing member 582 cannot rotate. Therefore, the first heating frame 510 and the second heating frame 520 collide with the fixing member 582 when the first heating frame 510 and the second heating frame 520 are closed, and the first heating frame 510 and the second heating frame 520, the heating roller included in each, etc. are not damaged.

  Further, when the first heating frame 510 and the second heating frame 520 are opened from the state shown in FIG. 10, the fixed shaft 516 of the first heating frame 510 pushes down the rotation preventing member 587 as shown in FIG. When the rotation preventing member 587 is pushed down by the fixed shaft 516, the rotation preventing portion 587c of the rotation preventing member 587 is fitted into the third groove portion 582d of the rotating fixing member 582 and does not hinder the rotation of the fixing member 582. Therefore, the fixing member 582 can rotate in the direction of the arrow in the figure with the heating frame closed, and can fix the first heating frame 510 and the second heating frame 520.

  In addition, in order to prevent rotation of the fixing members 583, 584, and 585 in a state where the first heating frame 510 and the second heating frame 520 are opened, the same configuration as described above is within the rotation range of each fixing member. An anti-rotation member may be provided.

  Further, as shown in FIG. 12, the fixing member 582 includes an adjustment member 591 that adjusts the size of the opening of the first groove 582b.

  The adjustment member 591 is a flat plate member that bends along the first groove 582b of the fixing member 582, and is fixed to the fixing member 582 by two screws 592 and 593. The adjustment member 591 has an opening adjustment hole 591a at a position overlapping a pin hole (not shown) provided in the fixing member 582. An eccentric pin 594 is inserted into the pin hole of the fixing member 582 and the opening adjustment hole 591 a of the adjustment member 591. When the eccentric pin 594 is rotated in the arrow direction, the adjustment member 591 moves up and down in the Z direction, and the size of the opening in the Z direction of the first groove 582b changes.

  For example, the timing belts 571, 572, 573, and 574 may expand and contract over time, the first heating frame 510 and the second heating frame 520 may be displaced, and the fixing member 582 may not fit on the fixing shaft 516 or the like. Even in such a case, the heating frame can be fixed by the fixing member 582 by rotating the eccentric pin 594 and moving the adjustment member 591 to adjust the size of the opening of the first groove 582b. It becomes possible.

  The adjustment member 591 may be provided so as to fit the second groove 582c so that the size of the opening of the second groove 582c can be adjusted. The adjustment member 591 may be provided in both the first groove 582b and the second groove 582c. Further, the fixing members 583, 584, 585 may be provided with an adjustment member having a similar configuration.

  As described above, according to the heating unit 50 according to the present embodiment, the first heating frame 510 and the second heating frame 520 that can be opened and closed are closed only by rotating the handles 503 and 504. Can be easily fixed in the state.

  The recording medium heating apparatus, the recording medium pretreatment apparatus, and the printing system according to the embodiments have been described above. However, the present invention is not limited to the above embodiments, and various modifications and improvements can be made within the scope of the present invention. Is possible.

10 recording medium 50 heating unit (recording medium heating device)
100 Printing System 120 Pretreatment Liquid Application Device (Recording Medium Pretreatment Device)
501 Opening / closing means 510 First heating frame (first heating means)
516, 526 Fixed shaft 520 Second heating frame (second heating means)
580, 581 Positioning shaft 582, 583, 584, 585 Fixing member 582b First groove 582c Second groove 582d Third groove 582e Projection 587 Stopper (rotation prevention member)
588 Adjustment member

Japanese Patent Laid-Open No. 10-202839

Claims (7)

First heating means for heating the recording medium to be conveyed from one surface side;
A second heating means for heating the recording medium from the other surface side;
Opening and closing means for holding the first heating means and the second heating means so as to be openable and closable;
A positioning shaft that is rotatably provided and contacts the first heating means and the second heating means in a state where the first heating means and the second heating means are closed;
Provided on the positioning shaft and rotated with the positioning shaft in a state where the first heating means and the second heating means are closed, and provided on the first heating means and the second heating means, respectively. A recording medium heating apparatus comprising: a fixing member fitted to the fixed shaft. The fixing member has a first groove portion that fits with a fixed shaft provided in the first heating means at one end, and an opening formed on the opposite side to the first groove portion at the other end, and the second heating means. The recording medium heating apparatus according to claim 1, further comprising a second groove portion that is fitted to a fixed shaft provided on the recording medium. The fixing member includes a third groove having an opening on the same side as the first groove between the first groove and an insertion hole into which the positioning shaft is inserted, the first groove, and the second groove. A protrusion formed between the groove and
In a state where the first heating unit and the second heating unit are closed while being rotatably provided and biased toward the first heating unit, the fixed shaft provided in the first heating unit is The anti-rotation member that fits into the third groove when the fixing member is rotated by being pressed and rotated, and in a state where the fixing member is opened, has an anti-rotation member that abuts on the protrusion when the fixing member rotates. 2. The recording medium heating apparatus according to 2. The fixing member has at least one of a first adjustment member that adjusts the size of the opening of the first groove and a second adjustment member that adjusts the size of the opening of the second groove. Item 4. The recording medium heating apparatus according to Item 2 or 3. A plurality of the positioning shafts are provided at different positions in the transport direction of the recording medium, the axial direction being substantially orthogonal to the transport direction of the recording medium;
The recording medium heating apparatus according to claim 1, wherein the fixing member is provided at each end of each of the plurality of positioning shafts. A recording medium heating apparatus according to any one of claims 1 to 5,
A recording medium pre-processing apparatus, comprising: a coating apparatus that is provided upstream of the recording medium heating apparatus and that applies a processing liquid to the recording medium. A recording medium pre-processing device according to claim 6,
A printing system comprising: a printing apparatus provided at a subsequent stage of the recording medium pre-processing apparatus and printing an image on the recording medium.

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