JP4465615B2 - Printing device - Google Patents

Description

  The present invention relates to a printing unit that prints an image on a long recording medium, and a printing apparatus that sends out a recording medium on which an image is printed by the printing unit.

  As a technique related to the printing apparatus configured as described above, a winding apparatus (the present invention) for winding up a sheet-like roll paper (the recording medium of the present invention) on which an image is printed by a plotter (the printing unit of the present invention). (For example, refer to Patent Document 1). In Patent Document 1, a core body (the core of the present invention) is rotatably provided in a winding device, and a leaf spring and a friction body that can fix an end portion of a sheet-like member are provided on the core body. At the time of printing, one end of the sheet-like member whose length from the core body reaches near the discharge port of the plotter is fixed to the core body so as to be sandwiched between the leaf spring and the friction body. Next, when the roll paper on which an image is printed is discharged from the plotter, the end of the roll paper and the other end of the sheet-like member are attached with a double-sided tape or the like, and the core is rotated. Thus, the point of winding the roll paper in the winding device is described.

Japanese Patent Laid-Open No. 2001-80800 (paragraph numbers [0014] to [0024], FIGS. 1 to 3)

  In a printing apparatus that prints on a long recording medium and sends the long recording medium in the horizontal direction, the recording medium that has already been sent out (downstream side) with respect to the recording medium on the upstream side (printing position side) Therefore, when printing near the rear end of the recording medium, or when the recording medium is sent out after finishing the printing of the rear end, the recording medium is caused by the weight of the recording medium already sent out. It may move downstream.

  In order to eliminate such inconvenience, it is conceivable to provide a horizontal posture table that receives the recording medium sent out after printing. Even when such a table is provided, recording exceeding the length of the table is possible. When printing a medium, the action of its own weight cannot be suppressed, and when a recording medium is sent out in a horizontal table, the printing medium that is printed is prevented from being sent out by contact with the upper surface of the table. There is also room for improvement.

  An object of the present invention is to rationally configure a printing apparatus that satisfactorily conveys a long recording medium on which an image is printed.

A feature of the present invention is a printing apparatus that includes a printing unit that prints an image on a long recording medium, and that sends out the recording medium on which the image is printed.
A suction table that is inclined at a lower level toward the downstream side of the conveyance medium is disposed at a position where the recording medium is sent out, and suction is applied to the recording medium by applying a negative pressure to the recording medium through a through hole formed in the table. With fans,
When transporting the recording medium, the suction fan is operated to attract the recording medium to the table, and when the rear end side of the recording medium is sent out from the printing unit, the suction force of the suction fan is increased. ,
The printing unit includes an ink jet type print head, and a heater for heating a recording medium conveyed to the table is disposed at an upper position of the table;
A winding unit that winds the recording medium under the table, and a transport unit having a pressure-feeding transport mechanism that drives and transports the recording medium from the table in the direction of the winding unit; By setting the conveyance speed of the crimping conveyance mechanism, the recording medium is loosened in a loop between the crimp conveyance mechanism and the print unit,
The pressure-conveying mechanism of the conveying unit is configured to be switchable between a pressure-bonding state in which the recording medium is pressure-bonded and a pressure-released state in which the pressure-bonding is released, and when the leading end of the recording medium is fed into the conveying unit, When the pressure-conveying mechanism is set to the pressure-released state and winding of the recording medium is started in the winding unit, the pressure-conveying mechanism is switched to the pressure-bonding state, and is fed by a predetermined amount during conveyance, and the recording medium is stopped when conveyance is stopped. the lies in the fact that Ru slackened in the form of a loop.

With this configuration, the recording medium printed by the printing unit is sent onto the inclined table, and when the leading end portion of the recording medium is sent, the recording medium can be conveyed using its own weight. Further, when a long recording medium is sent out, the negative pressure from the suction fan acts through the through hole, so that the movement of the recording medium already sent out by its own weight is suppressed, and the printing unit No excessive tension is applied to the recording medium. Furthermore, when the trailing edge of the recording medium is sent out from the print unit, the trailing edge of the recording medium can be prevented from sliding on the table by increasing the suction force of the suction fan.
According to this configuration, the recording medium printed by the ink jet print head of the printing unit is dried by the heat from the heater when being sent onto the table. Even if a roller or the like comes into contact with the surface of the recording medium by this drying, the ink does not adhere to the roller or the like, and the handleability is improved.
Further, according to this configuration, the recording medium printed by the printing unit is sent from the table to the crimping conveyance mechanism, and is conveyed by the crimping conveyance mechanism to be sent to the winding unit and taken up. By setting the conveyance speed of the recording medium with this pressure conveying mechanism, the recording medium is loosened in a loop between the pressure conveying mechanism and the printing unit, so that the previous recording medium upstream from the pressure conveying mechanism is transferred from the winding unit. No tension is applied.
In addition, according to this configuration, the leading end of the recording medium can be fed without resistance to the pressure-carrying transport mechanism in the pressure-released state. In addition, by switching the crimping conveyance mechanism to the crimping state, it is possible to perform winding by feeding the winding unit while controlling the conveyance amount of the recording medium by performing driving conveyance before starting winding at the winding unit, By stopping the conveyance by the crimping conveyance mechanism, the recording medium can be loosened in a loop shape on the upstream side of the crimping conveyance mechanism.
As a result, a printing apparatus that satisfactorily conveys a printed long recording medium from its front end to its rear end has been rationally configured.

The present invention is a printing apparatus that includes a printing unit that prints an image on a long recording medium, and that sends out the recording medium on which the image is printed.
A suction table that is inclined at a lower level toward the downstream side of the conveyance medium is disposed at a position where the recording medium is sent out, and suction is applied to the recording medium by applying a negative pressure to the recording medium through a through hole formed in the table. With fans,
When transporting the recording medium, the suction fan is operated to attract the recording medium to the table, and when the rear end side of the recording medium is sent out from the printing unit, the suction force of the suction fan is increased. ,
The printing unit includes an ink jet type print head, and a heater for heating a recording medium conveyed to the table is disposed at an upper position of the table;
A winding unit that winds the recording medium under the table, and a transport unit having a pressure-feeding transport mechanism that drives and transports the recording medium from the table in the direction of the winding unit; By setting the conveyance speed of the crimping conveyance mechanism, the recording medium is loosened in a loop between the crimp conveyance mechanism and the print unit,
When the trailing end of the printing process is completed and the recording medium by the printing unit passes over the table discharge, the crimping conveyor structure is, from the recording medium is printed portion during the printing process in the printing unit The recording medium may be sent at the speed at which it is performed.

With this configuration, the recording medium printed by the printing unit is sent onto the inclined table, and when the leading end portion of the recording medium is sent, the recording medium can be conveyed using its own weight. Further, when a long recording medium is sent out, the negative pressure from the suction fan acts through the through hole, so that the movement of the recording medium already sent out by its own weight is suppressed, and the printing unit No excessive tension is applied to the recording medium. Furthermore, when the trailing edge of the recording medium is sent out from the print unit, the trailing edge of the recording medium can be prevented from sliding on the table by increasing the suction force of the suction fan.
According to this configuration, the recording medium printed by the ink jet print head of the printing unit is dried by the heat from the heater when being sent onto the table. Even if a roller or the like comes into contact with the surface of the recording medium by this drying, the ink does not adhere to the roller or the like, and the handleability is improved.
Further, according to this configuration, the recording medium printed by the printing unit is sent from the table to the crimping conveyance mechanism, and is conveyed by the crimping conveyance mechanism to be sent to the winding unit and taken up. By setting the conveyance speed of the recording medium with this pressure conveying mechanism, the recording medium is loosened in a loop between the pressure conveying mechanism and the printing unit, so that the previous recording medium upstream from the pressure conveying mechanism is transferred from the winding unit. No tension is applied.
Further, according to this configuration, when the printing process in the printing unit is completed, the conveyance speed of the recording medium conveyed on the table is set equal to the conveyance speed when the printing process is performed in the printing unit. Achieve uniform drying.
As a result, a printing apparatus that satisfactorily conveys a printed long recording medium from its front end to its rear end has been rationally configured.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Overall Configuration] As shown in FIG. 1, a printing apparatus P that prints an image with sublimation ink on a roll-like long recording medium M and winds the recording medium M on which the image is printed in a roll. And a heat fixing device Q that performs a heat and heat fixing process while conveying the recording medium M wound up in a roll shape in the printing device P, constitutes a printing system.

  As shown in FIG. 10, the recording medium M is made of PET (polyethylene terephthalate) and has a polyvinyl alcohol resin or polyvinyl acetal type as a resin having affinity for sublimation ink with respect to the surface of the film-like substrate Ma. The fixing layer Mb is covered with a resin or the like, and a thin film-like penetrating layer Mc such as a fluororesin or a silicone resin that has no affinity for the sublimation ink is superposed on the surface of the fixing layer Mb in a peelable manner. The overall structure is a flexible sheet.

  The printing apparatus P prints an image with sublimation ink on the permeation layer Mc of the recording medium M, and the thermal fixing apparatus Q sublimates the ink of the permeation layer Mc by heating the recording medium M. Then, the image is transferred to the fixing layer Mb to fix the image on the surface of the base material Ma. After fixing the image in such a manner that the image is transferred, the permeation layer Mc is peeled off and removed in the form of a film, so that the clear layer formed on the fixing layer Mb on the surface of the base material Ma of the recording medium M is clear. The image can be exposed.

[Printing Apparatus] As shown in FIGS. 1 and 2, the printing apparatus P includes a printing unit A provided at the upper end of a main frame 11 in a vertical posture standing on a support frame 10 having casters, and the printing unit A. A medium setting unit B for supplying the recording medium M to the unit A, a drying unit C for drying the recording medium M sent out from the printing unit A by heating, and a loop on the recording medium M sent from the drying unit C A loop forming section D to be created, a transport section E that transports the recording medium M from the loop forming section D downward, and a winding that winds the recording medium M from the transport section E around a core R shown in FIG. A take part F and a control unit G for controlling them are provided.

  In the printing apparatus P, a control panel CP is provided on the outer surface of the case 12 that covers the printing unit A. Although not shown in the drawing, the control panel CP includes a plurality of switches for realizing various controls, a liquid crystal display for displaying information, and a media drive for acquiring image data from the media. By operating the switch of the control panel CP, a series of processing from setting of the core R, which will be described later, and printing processing to winding processing are realized.

  The printing apparatus P is connected to the computer 2 via the communication cable 1 and prints image data transmitted from the computer 2 in the printing unit A. The computer 2 includes a display 3, and information transmitted from the printing apparatus P can be grasped via the display 3.

[Print Section] The print section A sends a roll-like long recording medium M set in the medium set section B onto the upper surface of the print table 21 by a pair of pressure-conveying conveyance rollers 20. Then, an image is printed by the ink jet type print head 22 and further sent out to the drying section C by the conveying roller pair 20. The print head 22 is supported so as to be able to reciprocate in the width direction (main scanning direction) of the recording medium M along a guide rail 23 in a lateral orientation. The print head 22 has a cutter 24 for cutting the recording medium in the width direction. It is prepared for withdrawal.

  The conveying roller pair 20 is driven by a stepping motor type conveying motor 20M. The print head 22 is driven by a carriage motor 22M to reciprocate in the width direction (main scanning direction) of the recording medium M. The cutter 24 is driven in and out by a retracting operation mechanism 24A such as an electromagnetic solenoid.

  In the print section A, in addition to at least four sublimation inks of cyan (C), magenta (M), yellow (Y), and black (K), six colors using two sublimation inks of intermediate colors are used. use. The sublimation ink starts sublimation at about 80 ° C., and as described above, the recording medium M having the film-like PET base material Ma becomes an optimal transfer state by heating at 180 ° C. for about 2 minutes. The one of the nature is used. This sublimable ink can be easily sublimated at a temperature of about 170 ° C. to 200 ° C. The necessary transfer is performed by heating for about 1 minute at 200 ° C. and for about 5 minutes at 170 ° C., and is fixed. .

  When an image is printed by the printing unit A, the recording medium M is excessively conveyed by the conveying roller pair 20 to create a margin having a preset width on the leading end side of the recording medium M. Thereafter, An image is printed in such a form that sublimation ink is sprayed onto the recording medium M from the nozzles of the print head 22 during the reciprocating operation of the recording medium M in the width direction. Further, when the printing of the image is completed, the recording medium M is conveyed by a predetermined amount, thereby creating a margin with a preset width on the rear end side of the recording medium M, and the cutter 24 is moved by the exit / retreat operation mechanism 24A. The recording medium M on which the image is printed is separated by operating the print head 22 in the width direction by projecting.

[Media Setting Unit] As shown in FIGS. 8A and 8B, the recording medium M is supplied to the user in the form of a roll wound around a core material 5 made of paper and in a cylindrical shape. . The recording medium M has a width exceeding 1200 mm and a maximum length of 20 to 30 m. In the medium setting portion B, a pair of brackets 14 attached to the main frame 11 are provided with support cones 15 so as to be rotatable around the axis X. The support cone 15 is formed into a truncated cone shape having a small diameter at the tip so as to fit into both end portions of the core material 5, and at least one of the pair of support cones 15 is arranged in the width direction of the recording medium M (axial axis X direction). It supports so that the position in can be adjusted. Further, when the recording medium M is set in the medium setting portion B, the reel plate 16 is fitted on the support cone 15, and both ends of the recording medium M are sandwiched between the reel plates 16.

  On the outer periphery of the support cone 15, a plurality of projecting pieces 15 </ b> A having a posture along the axis X are formed in a rib shape. A hole 16H is formed in the center of the reel plate 16, and an engaging portion 16A into which the protruding piece 15A of the support cone 15 is fitted is formed in the hole 16H. An elastic material 17 such as rubber is formed at a position along the opening edge of the hole 16H of the reel plate 16, and the elastic material 17 such as rubber is supported by a support cone 15 as shown in FIG. In a state where the core material 5 is supported, the reel plate 16 functions to be pressed against the end of the recording medium M by contacting the conical outer surface of the support cone 15. The reel plate 16 is formed with a plurality of slits 16B so that the remaining amount of the recording medium M can be visually grasped from the outside. Although only one support cone 15 is shown in the drawing, this support cone 15 is arranged on the left and right.

  Because of such a configuration, when setting the roll-shaped recording medium M in the medium setting portion B, the reel plate 16 is externally fitted to the support cone 15, and the relative distance between the respective support cones 15 is increased. The position of the roll-shaped recording medium M is determined so that the support cone 15 is fitted into the core material 5, and thereafter the relative distance between the support cones 15 is shortened. As a result, the end portions of the respective support cones 15 enter the inside of the core material 5, and the roll-shaped recording medium M is supported by the support cone 15 in a form in which the pair of reel plates 16 sandwich the core material 5.

  When the recording medium M is set in this way, the reel plate 16 is strongly pressed against both ends of the recording medium M by the urging force from the elastic material 17 to provide stable support, and the recording medium M is inserted through the slit 16B. The remaining amount can be grasped, and when the recording medium M is sent out, the support cone 15, the reel plate 16, and the core material 5 rotate together around the axis X to allow the recording medium M to be sent out. .

[Drying Section] As shown in FIGS. 2 and 3, the drying section C dries in a gentle inclination posture (an inclination posture that becomes a lower level toward the downstream side of conveyance) for feeding the recording medium from the printing portion A obliquely downward. A table 26, a plurality of first mid-infrared heaters H1 disposed above the drying table 26, and a first temperature sensor SH1 including a thermistor disposed at an end position in the width direction of the drying table 26. I have.

  A plurality of through holes 26A are formed in the drying table 26, and two negative pressure spaces V are formed in the conveying direction via a partition wall 27 on the lower surface side of the drying table 26, and the respective negative pressure spaces V are formed. A suction fan 28 for discharging the air. The first mid-infrared heater H <b> 1 includes a mid-infrared lamp 6 and a reflector 7. Further, the drying unit C includes an optical first sensor S1 including a light source Sa and a light receiving element Sb so as to determine whether or not the recording medium M to be sent to the drying table 26 exists.

  Accordingly, the recording medium M sent to the drying section C is adsorbed by the negative pressure acting through the through hole 26A formed in the drying table 26, and the movement due to its own weight is suppressed and at the same time a smooth state. Maintained. Further, during this conveyance, the recording medium M is heated on average by the heat from the first mid-infrared heater H1, and the moisture in the ink is evaporated, thereby promoting drying.

[Loop Forming Section] The loop forming section D curves so as to guide the recording medium M sent from the drying table 26 in a steeply inclined position, and a guide table 30 in a steeply inclined position to contact the recording medium M and guide it downward. And a molded curved guide plate 31. Further, the loop forming portion D includes an optical second sensor S2 including a light source Sa and a light receiving element Sb so as to detect that the amount of bending of the recording medium M in the curved guide plate 31 exceeds the set value. It has.

[Conveying unit] The conveying unit E is a pressure-conveying mechanism Ea composed of a driving roller 34 and a driven roller 35 that compresses and conveys the recording medium M downward, and a recording that is sent downward by the pressure-conveying mechanism Ea. A plate-shaped guide member 36 disposed on the side on which the medium M is curled by winding (the substrate Ma side), a posture switching mechanism 37 that switches the posture of the guide member 36 around the axis Y, and the guide member 36 It comprises a guide body 38 that is swingably disposed at an opposing position, and a guide roller 39 that is supported on the swing end of the guide body 38. Further, the transport unit E includes an optical third sensor S3 including a light source Sa and a light receiving element Sb so as to determine whether or not the recording medium M is present at a position below the pressure-bonding transport mechanism Ea.

  The driving roller 34 of the pressure-conveying mechanism Ea is driven by a stepping motor type conveying motor 34M, and the driven roller 35 has a pressure-bonding position where the recording medium M is pressure-bonded to the driving roller 34 by a switching mechanism 35A such as an electromagnetic solenoid, It is configured to be switchable to a separation position separated from 34.

  The guide member 36 is supported by a rotating shaft 40 disposed on the axis Y through an arm 36A. As the posture switching mechanism 37, there is a transmission system that transmits a driving rotational force from a stepping motor type rotation motor 36M (an example of an actuator) to the rotation shaft 40 via a reduction gear 41 and a one-way clutch 42. It is configured. In addition, a guide position sensor SP that detects that the guide member 36 is in the guide posture by contact with the arm 36A is provided. Although the limit switch is assumed as the guide position sensor SP, an optical sensor such as a photo interrupter type or a potentiometer may be used.

  Due to such a configuration, the rotation of the rotation motor 36M until the guide position sensor SP reaches the detection state sets the guide member 36 to the guide posture indicated by the phantom line in FIG. By driving the dynamic motor 36M in the reverse direction, it is possible to set a separation posture (a position indicated by a solid line) away from the guide posture upward.

  The one-way clutch 42 functions to allow the guide member 36 to be lifted upward by human operation. For example, when the recording medium M is clogged, the guide member 36 is in the guide posture. The recording medium M can be removed by lifting it up to the separated position. Even when the guide member 36 is lifted by an artificial operation, when the guide member 36 is set to the guide posture, the rotation motor 36M is driven forward until the guide position sensor SP reaches the detection state. Therefore, the guide member 36 can be lowered.

  The operation mode of the pressure-bonding conveyance mechanism Ea and the guide member 36 of the conveyance unit E will be described later. When the recording medium M is sent to the winding unit F, the guide member 36 is set to the guide posture, and the recording medium After M is sent, control for switching the guide member 36 to the separated posture is performed.

  The guide body 38 is swingably supported around a support shaft 43 disposed on the base end side (upper side in the drawing), and the guide roller 39 is moved toward the guide member 36 around the support shaft 43. A spring 44 for swinging is provided. With such a configuration, when the winding diameter of the recording medium M wound around the winding core R in the winding portion F increases, the guide roller 39 comes into contact with the outer surface of the recording medium M and the spring 44 is attached. The guide body 38 swings away from the core R against the force.

[Core] As shown in FIG. 5, the core R includes a cylindrical core body 50, a core shaft 51 disposed on the axis Z of the core body 50, A chuck 53 swingable around a support shaft 52 in a parallel posture, a spring 54 as an urging means for urging the chuck 53 in the closing direction, and wheels 55 supported at both ends of the core body 50 It has. Note that an urging means that obtains an urging force by rubber or a magnet may be used instead of the spring 54.

  The chuck 53 is formed to have a full width in the axis Z direction of the core body 50, and the support shaft 52 is disposed between the support plates 53A attached to both ends thereof and the end surface 50A of the core body 50. The chuck 53 can be switched between the open posture shown in FIG. 12B and the holding posture shown in FIG. 11B with respect to the core body 50. In this holding posture, the chuck 53 and the core body 50 are switched. The recording medium M can be sandwiched and held between the outer periphery.

  A support ring 51A that freely rotates, such as a ball bearing, is fitted on both ends of the core 51. Further, the chuck 53 is provided with a crimping body 53B made of a flexible material such as rubber or sponge on the surface facing the outer periphery of the core body 50 at the center position in the axial center Z direction. As shown in FIG. 9, the outer surface of the chuck 53 is formed in an arc shape having a radius R <b> 2 smaller than the radius R <b> 1 of the outer peripheral surface of the core body 50 when viewed in the direction along the axis Z.

  Each of the wheels 55 is integrally formed with a connecting plate 55A connected to the end surface 50A of the core body 50 and a hook-like portion 55B located on the outer peripheral side of the connecting plate 55A. The connection plate 55A is formed with an opening 55H into which the support plate 53A of the chuck 53 is fitted, and a guide groove 55T for guiding the contact roller T shown in FIG. 13 is formed from the opening 55H to the outer surface of the connection plate 55A. ing. The guide groove 55T is formed in an arc shape centered on the shaft core Z, and the bottom surface of the guide groove 55T (the portion through which the contact roller T comes into contact) is deepest on the opening 55H side (core). It is formed in an inclined posture (closer to the end face 50A of the main body 50) and shallower (away from the end face 50A of the core body 50) toward the side away from the opening 55H.

  A gear portion 55G is formed on the outer periphery of the connecting plate 55A of one wheel 55, and a through hole 55P for position detection is formed in the flange portion 55B of the wheel 55.

[Winding Portion] As shown in FIGS. 4 to 7, the winding portion F includes a pair of left and right side walls 60 fixed to the main frame 11 so as to support the core shaft 51 of the winding core R. Is provided with a support frame 61 whose longitudinal direction is the horizontal direction. The support frame 61 is integrally formed with a vertical wall 61A that determines the position of the end of the core shaft 51, and a recess 61B that receives the support ring 51A of the core shaft 51.

  Further, as shown in FIG. 3, the winding unit F has a second mid-infrared heater H2 for heating the surface of the recording medium M wound around the winding core R supported by the support frame 61, and a winding around the winding core R. A second temperature sensor SH2 formed of a thermistor or the like is provided so as to measure the temperature near the surface of the recording medium M to be taken. The second mid-infrared heater H2 includes a mid-infrared lamp 6 and a reflecting plate 7.

  In the pair of support frames 61, an operation rod 62 having a contact roller T at its tip is inserted and arranged in a direction parallel to the axis Z. The contact roller T is configured as a small roller rotatably supported at the tip position of the operation rod 62, and the operation rod 62 is urged by a spring 63 in a direction in which the contact roller T protrudes. The pair of support frames 61 oscillates around a shaft 65 with a lock piece 64 that can be switched between a locking posture close to the upper position of the concave portion 61B and an open posture spaced apart from the upper position of the concave portion 61B. The side wall 60 is supported freely.

  In the winding portion F, a drive gear 66 is provided at a position close to the main frame 11, and rotational power from the stepping motor type winding motor 67 is transmitted to the driving gear 66 through a reduction gear 68 and a torque limiter 69. A transmission system is formed. In this winding drive system, the recording medium M sent out from the transport unit E in the initial state where the winding of the recording medium M onto the winding core R is started (the winding diameter on the winding core R is minimum). The winding speed is set so as to obtain a sufficient peripheral speed for winding. Incidentally, the rotation speed of the core R is about 1.5 rotations per minute (1.5 rotations / minute). A drive rotation mechanism that transmits rotational force from the winding motor 67 to the drive gear 66 and rotates the winding core R in both forward and reverse directions by a conductive system is configured.

  In addition, the torque limiter 69 has a general structure in which a friction plate is disposed at a portion for transmitting a rotational force. The recording medium M is not sent out from the conveying unit E, or the recording medium is applied to the winding core R. When the winding diameter is increased by winding M, slipping is generated by the torque limiter 69 to realize smooth winding without applying excessive tension to the recording medium M. Yes.

  A switching lever 70 protruding outward from the side wall 60 is provided so as to be swingable. This switching lever 70 is mechanically transmitted to the left and right lock pieces 64 and the left and right operation rods 62. It is linked.

  The switching lever 70 is configured to be held at the lock position L and the unlock position U shown in FIG. 4, and by operating to the lock position L, the lock piece 64 is set to the lock posture and the core shaft At the same time that the position of 51 is held, the operating rod 62 is set to protrude by the biasing force of the spring 63. Further, by operating to the unlocking position U, the locking piece 64 is set to the open posture, and at the same time, the contact roller T is operated by pulling the operating rod 62 against the urging force of the spring 63. Is pulled into the support frame 61.

  The switching lever 70 is assumed to have a structure in which the left and right side walls 60 are operated independently, but the operating force from one switching lever 70 is transmitted to the other switching lever 70 using a rod or plate. Can be linked to each other.

  The winding portion F is provided with a rotation posture sensor SR composed of a light source Sa and a light receiving element Sb so as to optically detect the position of a through hole 55P formed in the flange portion 55B of the wheel 55. The rotation posture of the core R in a state where the through-hole 55P is detected by the rotation posture sensor SR is a reference posture which will be described later. The rotation posture sensor SR is set when the winding core F is set on the winding unit F. This is used to realize control for setting the chuck 53 of the winding core R to the open posture.

[Control System] The control system in the control unit G can be shown as shown in FIG. Although not shown in this drawing, the control unit G has a microprocessor, a memory, an input / output interface, a driver configured by hardware for controlling power supplied to the actuators, and the like, and executes a preset program. Thus, the set processing is realized.

  Specifically, the control unit G includes the first sensor S1, the second sensor S2, the third sensor S3, the guide position sensor SP, the rotation attitude sensor SR, the first temperature sensor SH1, and the second temperature sensor SH2. Is input, the transport motor 20M, the print head 22, the carriage motor 22M, the exit / retreat operation mechanism 24A, the suction fan 28, the transport motor 34M, the switching mechanism 35A, the rotation motor 36M, the winding motor 67, the first A control signal is output to each of the heater H1 and the second heater H2. The control unit G forms a signal system for accessing information with the control panel CP, and further forms a signal system for accessing information with the computer 2 via the communication cable 1. is doing.

  The control unit G prints an image on the recording medium M in the printing unit A, and separates the recording medium M by the cutter 24 at the end of the image data, and the drying table 26, the guide table 30, and the conveying unit. E controls the conveyance process for feeding the recording medium M to the winding unit F, the winding process for winding the recording medium M around the core R in the winding unit F, and the first heater H1 and the second heater H2. It has the ability to perform the drying process in parallel.

  In the printing apparatus P, it is necessary to set the core R to the winding unit F before processing, and when the core R is set, the core R is set to an appropriate rotation posture. Setting control is performed.

  By the way, when the core R is set in the winding part F, the core R is fed in the form of being laid over the left and right support frames 61 with the switching lever 70 being operated to the unlock position U. The support ring 51A of the core shaft 51 is fitted into the recess 61B. The gear portion 55G formed on the wheel 55 in a state of being fitted in this manner reaches a state where it engages with the drive gear 66. By operating the switching lever 70 to the lock position L in this state, the lock piece 64 is held at the lock position, and the contact roller T can be protruded by the urging force of the spring 63.

  In the setting control (setting routine), as shown in the flowchart of FIG. 14, a control signal having a predetermined number of pulses per unit time is output to the winding motor 67, whereby the winding core R is moved to an arrow at # 01. Is rotated at a set speed in the forward rotation direction indicated by ## EQU2 ## and a signal from the rotation attitude sensor SR is input (step # 01). If the rotation state sensor SR continues the translucent state for a set number of pulses (or a set time) or if the light shielding time continues for a set number of pulses (or a set time), an error message is output and controlled. Is stopped (steps # 02 to # 04).

  As an output form of the error message, a character or a schematic diagram showing details of the error is displayed on the liquid crystal display of the control panel CP, an error code is displayed, and the computer connected to the printing apparatus P The processing form is set so that characters and schematic diagrams are displayed as details of the error information on the second display 3. As described above, when the light transmission state continues for the set number of pulses (or the set time) by the rotation attitude sensor SR, it is determined that the core R is not set in the winding unit F, and the light shielding time. Continues for a set number of pulses (or a set time), it is determined that the rotational attitude sensor SR is out of order.

  Next, the amount of light measured by the rotational attitude sensor SR at the time of light transmission is acquired with reference to the light shielding state, and a threshold value is newly set based on this amount of light, or if a light amount decrease is determined, Automatic adjustment processing such as increasing is performed (step # 05).

  If there is no error, the number of set pulses output to the winding motor 67 (from the light-transmitting state to the light-blocking state) with reference to the timing at which the rotation attitude sensor SR is switched from the light-blocking state to the light-transmitting state ( By counting the number of pulses in the light-transmitting state (# 06A to # 06B in the rotation posture of the core R), the size of the through hole 55P in the circumferential direction of the wheel 55 is obtained as a numerical value of the number of pulses.

  Next, a value ½ of the number of pulses acquired in this way is obtained, and the core R is set by the ½ value on the basis of the timing when the rotational attitude sensor SR is switched from the light shielding state to the light transmitting state. The reference posture of the core R is specified from the posture rotated (step # 06).

  Thus, when specifying the reference posture of the core R, the process of acquiring the size of the through hole 55P in the circumferential direction of the wheel 55 first and specifying the reference posture based on the size of the through hole is performed. This makes it possible to specify the reference posture with high accuracy even when the size of the through-hole 55P and the relative positional relationship between the through-hole 55P and the rotation posture sensor SR are displaced from an appropriate position in the radial direction of the wheel 55. To do. Further, the processing form may be set so that the reference posture is specified by executing the process of acquiring the size of the through hole 55P as the number of pulses a plurality of times and averaging the acquired number of pulses.

  When the reference posture is specified, the winding motor 67 is rotated forward to stop the rotation of the core R in the reference posture (Step # 07). In this way, at the timing when the rotation posture of the winding core R is stopped at the reference posture indicated by # 07, the contact roller T is connected to the chuck 53 while the chuck 53 is in the holding posture as shown in FIG. The positional relationship is just before contact with the end face of 55A.

  If the relative positional relationship between the contact roller T and the end face of the connecting plate 55A in the # 07 step is represented by a cross section, it is as shown in FIGS. 13 (a) and 13 (b).

  Next, the winding motor 67 is reversed from the reference posture to rotate the winding core R by a preset angle θ and stop in the standby posture (step # 08). When the rotation posture of the winding core R is reversed from the reference posture to the standby posture indicated by # 08 in this way, the contact roller T contacts the end surface of the connecting plate 55A as shown in FIG. The chuck 53 is switched from the holding posture to the open posture shown in FIG. 12B against the urging force of 54.

[Recording medium processing sequence] With the winding core R set as described above, the printing apparatus P can perform a series of processes including a printing process, a conveying process, a drying process, and a winding process on the recording medium M. .

  This recording medium processing sequence is realized by the control of the control unit G, and continuous processing in this medium processing sequence can be shown as shown in FIGS. A continuous process is demonstrated below according to the order of (a)-(i).

[Recording medium processing sequence]
(A) When a printing process for printing an image on the recording medium M is started in the printing unit A, the first heater H1 of the drying unit C is driven, the suction fan 28 of the drying unit C is operated, The driven roller 35 of the transport unit E is set at the separation position, and the guide member 36 of the transport unit E is set to the guide posture. At the start of the printing process, printing of an image is started after a margin is formed at the leading end of the recording medium M.

  By operating the suction fan 28 in this way, the recording medium M sent out from the printing unit A is attracted to the drying table 26, and the tension caused by the weight of the recording medium M is applied to the recording medium of the printing unit A. It does not act on M. Further, in the drying unit C, moisture contained in the ink of the image immediately after being printed on the recording medium M is positively evaporated by the heat from the first heater H1.

(B) Next, when the front end of the recording medium M sent out from the printing unit A is detected by the first sensor S1, the drive roller 34 of the transport unit E is started to rotate. The rotational speed of the driving roller 34 is set to be equal to the speed of the recording medium M sent out from the printing unit A, and the recording medium M is smoothly passed through the portion of the driving roller 34 by the rotational driving of the driving roller 34. .

(C) Next, when the leading edge of the recording medium M is detected by the third sensor S3, the rotational driving of the driving roller 34 of the transport unit E is stopped and the driven roller 35 of the transport unit E is pressed. Switch to position. By pressing the recording medium M in this way, the conveyance of the recording medium M in the conveying section E is stopped, and the recording medium M is slackened in the loop forming section D as the printing progresses in the printing section A. Occurs and a loop is formed.

(D) Next, when the loop formed by the loop forming portion D expands and the recording medium M is detected by the second sensor S2, the drive roller 34 of the transport portion E is driven to perform recording. The medium M is transported by a set amount (for example, about 5 mm) (may be transported for a set time). If the second sensor S2 reaches the non-detection state by this conveyance, the drive roller 34 is maintained in the stopped state. Further, when the second sensor S2 maintains the detection state by the conveyance (when the non-detection state is not reached), the driving roller 34 is driven again to convey the recording medium M by a set amount.

  Thus, every time the loop of the recording medium M expands in the loop forming section D (each time the recording medium M is detected by the second sensor S2), the recording medium M is conveyed by the set amount by the driving roller 34, and thus recording is performed. The medium M is intermittently transported in the transport unit E, and a loop is maintained during the transport, so that no strong tension is applied to the recording medium M in the print unit. By this conveyance, the leading edge of the recording medium M is fed with high accuracy between the outer periphery of the core body 50 of the core R and the open chuck 53 from a relatively narrow space between the guide member 36 and the guide body 38. It is.

  That is, since the recording medium M is supplied to the user while being wound around the core material 5 in a roll shape as described above, the recording medium M after the printing process is curled in the direction of the guide member 36 by winding. It is guided appropriately by contact with the guide member 36. In particular, since the position where the recording medium M is wound around the winding core R is arranged at a position displaced in the direction in which the recording medium M is curled with respect to the vertically lower side of the conveying section E, the recording medium M is guided by the guide member. The inconvenience of strongly contacting the recording medium 36 is avoided, and the recording medium M can be smoothly guided at the portion of the guide member 36.

  At the time of this conveyance, the control unit G integrates the number of pulses of the control signal for controlling the conveyance motor 34M, thereby acquiring the accumulated conveyance amount (conveyed length) of the recording medium M by the drive roller 34. In addition, a distance from the position of the third sensor S3 to a position where the recording medium M can be wound by the winding core R of the winding unit F (a position where the recording medium can be held by the chuck 53) (hereinafter referred to as winding). Each time the recording medium M is conveyed by the drive roller 34, the integrated conveyance amount is compared with the winding possible length.

(E) Next, when the control unit G determines that the above-described integrated transport amount matches or exceeds the winding possible length, the winding core F of the winding unit F is rotated in the normal direction to wind up. Simultaneously with the start, the guide member 36 is switched to the separation posture, and the second heater H2 of the winding unit F is driven.

  In this way, when the winding core R is rotated forward and winding is started, the contact roller T is relatively displaced in a direction allowing the chuck 53 to swing in the holding posture direction by the urging force of the spring 54. Therefore, the chuck 53 is switched to the holding posture by swinging around the support shaft 52, and the recording medium M is sandwiched between the crimping body 53 </ b> B of the chuck 53 and the core body 50, and a blank portion at the tip of the recording medium M is removed. To grip.

  Further, since the recording medium M is intermittently transported by the transport unit E, slippage occurs in the torque limiter 69 when the recording medium M is not transported by the transport unit E. As shown in FIG. 9, during the winding process, the recording medium M is wound from the outer periphery of the core R to the outer periphery of the chuck 53, but the outer peripheral surface of the chuck 53 is formed into a smooth arc shape. Therefore, the recording medium M is not deformed.

  When the winding diameter of the core R is increased by continuing the winding process, the guide roller 39 provided at the tip of the guide body 38 comes into contact with the outer periphery of the recording medium M, so that the guide body 38 is spring 44. It swings around the support shaft 43 against the urging force. Further, the contact roller T moves relatively along the bottom surface of the guide groove 55T of the connecting plate 55A from the support plate 53A when the winding core R rotates in the forward direction. It does not inhibit R rotation.

  Although not shown in the drawing, when the winding process is continued in the winding unit F, the control unit G integrates the number of pulses of a control signal for controlling the transport motor 34M, so that the driving roller 34 Every time the integrated transport amount (transported length) of the recording medium M is acquired and the acquired integrated transport amount reaches 300 mm (or 300 mm as long as it is a value suitable for winding), the winding is performed. Opening control is performed in which the winding of the lead R is temporarily stopped and the driven roller 35 is switched to the separated position for a short time (about 0.5 seconds).

  By performing this release control, the tension that continuously acts on the recording medium M between the transport unit E and the core R is temporarily released, so that the recording medium M has its own strength and weight. Even if the recording medium M is conveyed in a meandering manner by removing the distortion and wrinkles that occur during conveyance by using the restoring force that is caused, the meandering is eliminated and the recording medium M is conveyed linearly. Can be rolled up.

(F) Next, the printing process is completed in the printing unit A, and a process of separating the rear end of the recording medium M by the cutter 24 in a state where a blank is formed at the rear end of the recording medium M is performed. Thus, when the recording medium M is separated by the cutter 24, the suction force of the suction fan 28 is increased so that the posture of the recording medium M is not disturbed. After the recording medium M is cut in this way, the suction force of the suction fan 28 is restored, and the drive roller 34 of the transport unit E is driven continuously (may be intermittent) at a set speed. As a result, the recording medium M is conveyed at a higher speed than the conveying speed of the conveying unit E when the printing process is continued, and the loop of the loop forming unit D is eliminated.

(G) and (h) Next, the drive roller 34 of the transport unit E is continuously (may be intermittent) driven at the same speed as the recording medium M is sent out from the print unit A. Thus, the drying of the rear end portion of the recording medium M is continued, and when the rear end portion passes through the heater H portion of the drying unit C, the energization to the heater H is stopped and the suction fan 28 is stopped. When the recording medium M whose rear end is cut in this way is taken up by the take-up unit F, the recording medium M is conveyed at a higher speed than the conveyance speed of the conveyance unit E when the printing process is continued. Alternatively, the driving roller 34 of the transport unit E may be driven.

(I) Next, as the winding of the recording medium M with respect to the winding core R proceeds, the blank portion at the rear end of the recording medium M reaches the pressure-bonding position between the driving roller 34 and the driven roller 35 of the transport unit E. At this timing, the driving of the driving roller 34 and the rotation of the winding core R are stopped, and the blank portion is pressure-bonded by the driving roller 34 and the driven roller 35. Then, the energization of the winding unit F to the second heater H2 is stopped, and the processing in this recording medium processing sequence is completed.

  As described above, when the processing in the medium processing sequence is completed, the state where the driving roller 34 and the driven roller 35 are pressure-bonded to the blank portion at the rear end of the recording medium M is maintained. There will be no inconvenience of sagging. From this state, the operator manually separates the rear end of the recording medium M from the pressure-bonding portion between the driving roller 34 and the driven roller 35, and the recording medium M wound around the winding core R is transferred to the heat fixing device Q. It becomes possible to set.

[Thermal Fixing Device] As shown in FIG. 17, the thermal fixing device Q includes a recording medium setting portion Qa, a thermal fixing portion Qb, and a winding portion Qc.

  The recording medium setting portion Qa includes a support portion 81 that supports the recording medium M in a state of being wound around the core R on an upper portion of a frame 80 that can be moved by a caster. The support 81 includes a guide roller 82 that receives and supports the core 51 of the core R and guides the recording medium M from the support 81.

  The heat fixing portion Qb forms a preheating space T1 and a heating space T2 inside a wall body 86 in which an introduction port 86a and a discharge port 86b are formed in the upper part of the main body frame 85, and the discharge port of the wall body 86 is formed. A discharge space J is formed on the 86b side.

  A heating and conveying path is formed between the introducing roller 87 arranged on the introducing port 86a side and the discharging roller 88 arranged on the discharging port 86b side, and the recording medium M is directed in the horizontal direction. A plurality of conveying rollers 89 are provided along the line. In addition, a heating plate 90 that electrically heats is disposed below the conveyance path, and further, a recording medium M on which air heated by the electric heater 91 is conveyed to the heating conveyance path above the heating conveyance path. A cross flow fan 92 is provided that circulates in a manner that it is brought into contact with the surface.

  The discharge space J includes an inclined guide plate 93 and a pressure-bonding type discharge roller pair 94. The winding portion Qc includes a support portion 95 for the winding core W (which may have the same structure as the winding core R described above), and a winding for driving and rotating the winding core W supported by the support portion. And a motor 96.

  Since the heat fixing device Q is configured as described above, when performing the heat fixing process, the recording medium M wound around the core R is set in the recording medium setting portion Qa, and this recording medium is set. An operation of feeding the leading end of M (the trailing end during the winding process) into the introduction port 86a through the guide roller 82 is performed. After the leading end of the recording medium M is introduced into the introduction port 86a in this way, the recording medium M is conveyed by the conveying force from the plurality of conveying rollers 89, and the lower surface side is heated by the heating plate 90 during the conveyance. The upper surface (printed surface) is heated with heated air from the cross flow fan 92.

  In this heating, the recording medium M is controlled to be maintained at about 180 ° C., and the ink in the permeation layer Mc of the recording medium M is sublimated by this heating and transferred to the fixing layer 2 to be fixed. Thereafter, the temperature of the recording medium M discharged into the discharge space J is reduced by heat radiation, and is sent out by the discharge roller pair 94.

  Then, the recording medium M sent out from the discharge roller pair 94 is wound around the winding core W in a roll shape. Incidentally, when the recording medium M is wound around the core W, it is assumed that the tip of the recording medium M is attached to the core W using a double-sided tape or the like. You may use the thing provided with the type | mold chuck | zipper.

  As described above, according to the present invention, the core 53 is provided with the chuck 53 whose posture can be freely switched, and when the core R is set in the winding unit F, the chuck is made in a direction in which the recording medium M can be received. Since the control for opening 53 (setting control) is automatically performed, this setting does not take time. In this setting control, the posture of the chuck 53 is switched depending on the structure of the contact roller T, the chuck 53, and the wheel 55 and the setting of the rotation direction of the core R, so that an actuator for directly driving the chuck 53 is not required. .

  Further, when the printing process is started by the printing apparatus P, the ink is dried by the heat from the heater H while the recording medium M is adsorbed to the drying table 26 with a gentle slope and fed in a flat state, so that the recording is performed. The tension caused by the weight of the medium M does not act on the recording medium M of the print section A to reduce the image quality, and the heat amount required for the processing in the heat fixing device Q is reduced and heat is reduced thereafter. In addition to shortening the processing time of the fixing process, the inconvenience of soiling an object that contacts the recording medium M with ink is eliminated.

  Further, when the recording medium M is sent to the winding core R, a loop is formed by loosening the recording medium M in the loop forming unit D, and the recording medium M on the downstream side of the loop is connected to the driving roller 34 of the conveying unit E. Since it is conveyed in a form in which it is pressure-bonded with the driven roller 35, it is possible to avoid the inconvenience of applying an excessive tension from the conveying unit E to the recording medium M, and to perform printing in the printing unit A smoothly.

  When the printing process in the printing unit A is completed, the conveyance speed in the conveyance unit E is increased. Therefore, the loop of the loop forming unit D is eliminated, and the speed at which the recording medium M is wound up in the winding unit F is increased. Increase work efficiency.

  In particular, when the leading end of the recording medium M is fed into the core R, the recording medium M curls from being wound, but the leading end of the recording medium M is relatively narrow between the guide member 36 and the guide body 38. It will be introduced from the space with high accuracy, and automatic winding will be possible without any manual operation by the operator. Further, since the guide member 36 is switched to the separation posture when the winding with the core R is started, the guide member 36 does not hinder the winding when the winding diameter of the core R is increased.

[Another embodiment]
The present invention may be configured as follows in addition to the embodiment described above.

(A) One or both of the guide member 36 and the guide body 38 are not provided, and the operator artificially cores the leading end of the recording medium M sent from the conveyance unit E composed of the drive roller 34 and the conveyance motor 35. The printing apparatus is configured so as to start winding with the core R after the introduction. By configuring the recording medium M to be semi-automatically wound in this way, the leading end of the recording medium M can be accurately fed into the chuck 53 of the winding core R, and the recording medium M is soft. Even so, reliable winding is realized.

  As a device for performing the semi-automatic winding, a configuration in which the rotation posture of the winding core R and the posture of the chuck 53 are artificially set may be employed. However, as shown in the embodiment, the winding core R is formed using a sensor. Is set to the standby posture, and the mechanism for switching the chuck 53 to the open posture using the contact roller T is used to automatically set the rotational posture of the core R and the posture of the chuck 53. It may be a thing.

  In particular, in the printing apparatus of the present invention, as described in the embodiment, the control mode in which the leading end of the recording medium M is introduced into the chuck 53 of the winding core R by the fully automatic control, and the semi-automatic operation utilizing a part of the control as described above. The control unit G may be configured so that one of the control modes for winding the recording medium M with the winding core R can be selected by the control.

(B) As the transport unit E, a belt-type transport unit is provided, and a plurality of transport rollers are arranged along the transport direction. By configuring the transport unit in this manner, even when the recording medium M is heavy, reliable transport is manifested with a strong grip force.

(C) The support form is set so that the guide member 36 is slid between the guide position and the separated position.

(D) In order to detect the rotation posture of the core R, an index for optically detecting the rotation posture of the wheel 55 is formed on the outer periphery of the wheel, or magnetic data for magnetically detecting the rotation posture of the wheel 55. Is formed on the outer periphery of the wheel.

  The printing apparatus is not limited to the ink jet type, and may be applied to a transfer type using an ink ribbon or the like, or may be applied to a structure in which the chuck is configured to switch the posture with a dedicated actuator as a winding core. good.

The perspective view which shows the whole structure of a printing system Vertical side view of printing device Sectional drawing which shows the conveyance path of the recording medium from a drying part to a winding-up part Side view showing the core support structure in the winding unit Exploded perspective view of the core end Side view showing the end of the core supported by the winding unit Transverse plan view showing the end of the core supported by the winding unit The perspective view which shows the structure of the support cone and reel board of a medium setting part, and sectional drawing of the state which set the recording medium Sectional drawing which shows the positional relationship of the core of a state which wound up the recording medium, and a guide body Cross section of recording medium Side view of the core and a cross-sectional view of the core when the core is in the reference position Side view of the core and a cross-sectional view of the core when the core is reversed from the reference position Sectional drawing which shows the positional relationship of a chuck | zipper and a contact roller in the state in which a chuck | zipper is a holding position and a chuck | zipper is in an open position A flowchart of the setting routine and a diagram showing the rotation posture of the winding core at each step of this routine Block diagram of control system The figure which showed the position of the recording medium from the sending out of a recording medium to winding up, and the operation form of each site | part Longitudinal side view of thermal fixing device

Explanation of symbols

22 Print head 26 Table: Drying table 26A Through hole 28 Suction fan A Print section E Transport section Ea Pressure transport mechanism F Winding section H1 Heater M Recording medium

Claims (2)

A printing apparatus that includes a print unit that prints an image on a long recording medium, and that sends out the recording medium on which the image is printed.
A suction table that is inclined at a lower level toward the downstream side of the conveyance medium is disposed at a position where the recording medium is sent out, and suction is applied to the recording medium by applying a negative pressure to the recording medium through a through hole formed in the table. With fans,
When transporting the recording medium, the suction fan is operated to attract the recording medium to the table, and when the rear end side of the recording medium is sent out from the printing unit, the suction force of the suction fan is increased. ,
The printing unit includes an ink jet type print head, and a heater for heating a recording medium conveyed to the table is disposed at an upper position of the table;
A winding unit that winds the recording medium under the table, and a transport unit having a pressure-feeding transport mechanism that drives and transports the recording medium from the table in the direction of the winding unit; By setting the conveyance speed of the crimping conveyance mechanism, the recording medium is loosened in a loop between the crimp conveyance mechanism and the print unit,
The pressure-conveying mechanism of the conveying unit is configured to be switchable between a pressure-bonding state in which the recording medium is pressure-bonded and a pressure-released state in which the pressure-bonding is released, and when the leading end of the recording medium is fed into the conveying unit, When the pressure-conveying mechanism is set to the pressure-released state and winding of the recording medium is started in the winding unit, the pressure-conveying mechanism is switched to the pressure-bonding state, and is fed by a predetermined amount during conveyance, and the recording medium is stopped when conveyance is stopped. printing device Ru slackened in a loop to. A printing apparatus that includes a print unit that prints an image on a long recording medium, and that sends out the recording medium on which the image is printed.
A suction table that is inclined at a lower level toward the downstream side of the conveyance medium is disposed at a position where the recording medium is sent out, and suction is applied to the recording medium by applying a negative pressure to the recording medium through a through hole formed in the table. With fans,
When transporting the recording medium, the suction fan is operated to attract the recording medium to the table, and when the rear end side of the recording medium is sent out from the printing unit, the suction force of the suction fan is increased. ,
The printing unit includes an ink jet type print head, and a heater for heating a recording medium conveyed to the table is disposed at an upper position of the table;
A winding unit that winds the recording medium under the table, and a transport unit having a pressure-feeding transport mechanism that drives and transports the recording medium from the table in the direction of the winding unit; By setting the conveyance speed of the crimping conveyance mechanism, the recording medium is loosened in a loop between the crimp conveyance mechanism and the print unit,
When the printing process in the printing unit is completed and the trailing edge of the recording medium passes over the table, the pressure-conveying and conveying mechanism causes the recording medium to be ejected from the printing unit during the printing process in the printing unit. print device for feeding the recording medium at a speed in that.

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