JP2016168749A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer capable of forming a high quality pattern on a web-like base material.SOLUTION: A printer 100 comprises: a delivery roller 123 which delivers a base material 1; a suction roller 125 which conveys the base material 1 delivered from the delivery roller 123 while holding it; a stage 113 which is arranged between the delivery roller 123 and the suction roller 125 to support the base material 1 with the upper surface; a suction pump 128 which causes the upper surface of the stage 124 to hold the base material 1; a register adjustment unit 114 which adjusts the position of the stage 113; and a control unit 140 which controls the delivery roller 123 and the suction roller 125 so as to relax the tensile force of the base material 1 between the stage 113, the delivery roller 123, and the suction roller 125 after controlling the suction pump 128 so as to cause the stage 113 to hold the base material 1, and then controls the register adjustment unit 114 so as to adjust the position of the stage 113.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a printing machine that forms a pattern by printing ink on a web-like substrate, and more particularly, when a high-definition functional film (conductive film) is formed on a web-like substrate by a printing method. It is extremely effective when applied to.

  As a printing machine that forms a pattern by printing ink on a web-like substrate, for example, as described in Patent Document 1 below, the function of a high-definition pattern on a web-like substrate by letterpress printing It is known to form a conductive film (conductive film) by printing, that is, to form various display devices, electronic components, electronic members and the like on a film.

  Examples of the display device include a liquid crystal display, an organic EL display, a PDP, and an FED. Examples of the electronic component and the electronic member include a color filter, an active substrate, a memory, an RFID, an IC, an antenna, and a wiring. And a printed circuit board.

JP 2010-023393 A

  In the conventional printing press as described above, the web-shaped substrate fed out for a predetermined length is sucked and held on the stage, and the position of the stage is adjusted so that the registration of the substrate with respect to the printing cylinder is adjusted. A pattern is printed on a substrate with a printing cylinder.

  At the time of this registration, since the base material is adsorbed and held in a state where tension is applied on the stage, wrinkles may occur. If such wrinkles are generated in the base material, it is difficult to print the ink on the base material with high quality, and it may be difficult to form a high-quality pattern.

  In view of the above, an object of the present invention is to provide a printing machine capable of forming a pattern with high quality on a web-like substrate.

  In order to solve the above-described problems, a printing press according to the present invention includes a base material feeding unit that feeds a web-shaped base material, and a transport unit that transports the base material fed from the base material feeding unit while holding the base material. A stage disposed between the base material feeding means and the transport means and supporting the base material on the upper surface; a base material holding means for holding the base material on the upper surface of the stage; and adjusting the position of the stage In a printing machine, comprising: a stage position adjusting unit that performs printing; and a pattern forming unit that forms a pattern by printing ink on the substrate on the stage, so that the substrate is held on the upper surface of the stage. After controlling the holding means, the base material feeding means is controlled so as to loosen the tension of the base material between the base material feeding means and the stage, and the base material between the stage and the transport means is controlled. Tension After controlling the conveying means in Mel so, characterized in that it comprises a control means for controlling the stage position adjustment means to adjust the position of the stage.

  In the printing machine according to the present invention, in the printing machine described above, after the control unit controls the stage position adjusting unit to adjust the position of the stage, ink is printed on the substrate on the stage. Then, the pattern forming means is controlled so as to form a pattern.

  Further, the printing machine according to the present invention is the above-described printing machine, wherein the control unit controls the pattern forming unit so as to form a pattern by printing ink on the substrate on the stage. The base material feeding means is controlled so as to return to the size immediately before the base material tension between the material feeding means and the stage is loosened, and the base material tension between the stage and the transport means is loosened. The conveyance means is controlled to return to the previous size.

  Further, the printing press according to the present invention is the above-described printing press, wherein, when the control means loosens the tension of the base material between the base material feeding means and the stage, the base material feeding means is used. The base material feeding means is controlled so that the base material is fed out from the stage to the stage, while the base material is fed out when returning to the size immediately before the base material tension between the base material feeding means and the stage is loosened. When the base material feeding means is controlled so as to be rewound from the stage toward the base material feeding means by a length equal to the length, and when the tension of the base material between the stage and the transport means is relaxed, When the transporting unit is controlled so as to pull the substrate back from the transporting unit toward the stage, and the substrate is returned to the size immediately before the tension between the stage and the transporting unit is relaxed, the substrate is Length equal to the pulled back length In which it characterized in that for controlling the conveying means to deliver towards the relevant stage to the conveying means.

  According to the printing press according to the present invention, the control means controls the base material holding means so as to hold the base material on the upper surface of the stage, and then the tension of the base material between the base material feeding means and the stage is controlled. The base material feeding means is controlled so as to be loosened, and the stage position adjusting means is controlled so as to adjust the position of the stage after controlling the conveying means so as to loosen the tension of the base material between the stage and the conveying means. Therefore, even if the stage position is adjusted, the base material on the stage is not wrinkled, so that the ink can be printed with high quality on the base material, and there are various kinds of materials regardless of the presence or absence of stretchability. A high quality pattern can be formed on the substrate.

1 is a schematic configuration diagram of a main embodiment of a printing press according to the present invention. It is the figure seen from the arrow line II direction of FIG. It is a control block diagram of the printing machine of FIG. FIG. 2 is an operation process flowchart of the printing machine of FIG. 1.

  Embodiments of a printing press according to the present invention will be described with reference to the drawings. However, the present invention is not limited to only the embodiments described with reference to the drawings.

<Main embodiment>
A main embodiment of a printing press according to the present invention will be described below with reference to FIGS.

  As shown in FIGS. 1 and 2, guide rails 112 are arranged in pairs on the support base 111. An internal hollow stage 113 having a plurality of suction holes formed on the upper surface is disposed above the support base 111 near the center in the longitudinal direction of the guide rail 112 between the pair of guide rails 112.

  Between the support base 111 and the stage 113, the position of the stage 113 is in the vertical direction (X direction: left and right direction in FIG. 1), left and right direction (Y direction: vertical direction on the page in FIG. 1), and twisted. There is provided a register adjusting device 114 that is a stage position adjusting means that can be adjusted in each direction (θ direction: pivot movement along the XY plane), and the register adjusting device 114 horizontally aligns the upper surface of the stage 113. It is driven by a ball screw, a linear motor or the like so that it can move along the horizontal direction in a maintained state.

  As shown in FIG. 1, a support frame 120 that is slidable along the guide rail 112 is located near one end in the longitudinal direction of the guide rail 112 on the pair of guide rails 112 (leftward in FIG. 1). They are arranged in pairs. Above the pair of support frames 120, a blanket cylinder 121 having a blanket wound around an outer peripheral surface is rotatably supported so as to be movable in the vertical direction.

  A plate cylinder 122 having a plate attached to its outer peripheral surface is rotatably disposed at an upper position on one end side in the longitudinal direction of the guide rail 112 (left side in FIG. 1). When the frame 120 is positioned on one end side in the longitudinal direction of the guide rail 112 (left side in FIG. 1) and the blanket cylinder 121 is positioned above, that is, the blanket cylinder 121 is positioned at the retracted position. Sometimes, it is located at a position where it can come into contact with the outer peripheral surface of the blanket cylinder 121. An ink supply device (not shown) that supplies ink to the plate cylinder 122 is disposed in the vicinity of the plate cylinder 122.

  That is, the blanket cylinder 121 is positioned at the retracted position and the blanket cylinder 121 and the plate cylinder 122 are rotated to transfer ink corresponding to the plate pattern of the plate cylinder 122 to the blanket cylinder 121. The blanket cylinder 121 is positioned at the lower operating position, and the blanket cylinder 121 is rotated while the support frame 120 is slid along the guide rail 112, whereby the blanket cylinder 121 is moved to the stage 113. It can be rolled up.

  As shown in FIGS. 1 and 2, the guide rail 112 on the pair of guide rails 112 is slidably movable along the guide rail 112 at the other end in the longitudinal direction (rightward in FIG. 1). Frames 115 are arranged in pairs. The slide frames 115 forming a pair are integrally connected by a connecting stay 115a.

  On the upper side of the opposing surfaces of the slide frame 115 forming a pair, the base end side of the actuator 116 oriented so that the front end side is directed downward is attached in a pair. A support block 117 is attached to the tip of the pair of actuators 116 in a pair.

  A squeeze roller 118, which is a wrinkle-stretching roller having a surface made of a polymer material having elasticity such as silicon rubber, polyester rubber, butyl rubber, or the like, is rotatably supported below the pair of support blocks 117. Has been. Adhesive roller 119, which is a dust removing roller having an adhesive surface, is rotatably supported above the pair of supporting blocks 117 so as to contact the outer peripheral surface of squeeze roller 118. Yes.

  That is, the squeeze roller 118 is moved away from the upper surface of the stage 113 by operating the actuator 116 and positioning the squeeze roller 118 and the adhesive roller 119 through the support block 117 in the upper retracted position. The squeeze roller 118 and the adhesive roller 119 are positioned at the lower operating position, so that the squeeze roller 118 can be brought into contact with the upper surface of the stage 113. The squeeze roller 118 and the adhesive roller The squeeze roller 118 can be rolled on the stage 113 by sliding the slide frame 115 along the guide rail 112 with the 119 positioned at the operating position. With the rotation of Zurora 118 it is has become to be able to rotate with the adhesive roller 119.

  As shown in FIG. 1, a web-like substrate 1 wound in a reel shape is placed on a side position (left side in FIG. 1) of one side of the support base 111 in the longitudinal direction of the guide rail 112. A feeding roller 123 for feeding out is rotatably arranged. The base material 1 fed out from the feed roller 123 via the stage 113 is positioned at a side position (on the right side in FIG. 1) of the support base 111 from the other side in the longitudinal direction of the guide rail 112. A take-up roller 124 that winds the toner in a reel shape is rotatably arranged.

  Between the stage 113 and the winding roller 124, an internal hollow suction roller 125 having a large number of suction holes formed on the outer peripheral surface is rotatably disposed. Between the suction roller 125 and the take-up roller 124, a buffer roller 126 for guiding while guiding the base material 1 between the suction roller 125 so as to be loosened is disposed. In FIG. 1, reference numeral 127 denotes a guide roller.

  The stage 113 is connected to a suction pump 128 that is a substrate holding means. A suction pump 129 is connected to the suction roller 125. That is, by operating the suction pump 128, air can be sucked from the suction hole on the upper surface of the stage 113, and the substrate 1 can be detachably sucked and held while being supported on the upper surface of the stage 113. By operating the suction pump 129, air is sucked from the suction hole of the suction roller 125, and tension is applied to the base material 1 without loosening the base material 1 with the feeding roller 123. In this way, the substrate 1 can be transported while being detachably sucked and held by the suction roller 125.

  As shown in FIGS. 1 and 2, a pair of CCD cameras 130, which are base material position detecting means for imaging the base material 1 on the stage 113, are attached to the connecting stay 115 a of the slide frame 115. .

  As shown in FIG. 3, the CCD camera 130 is electrically connected to an input unit of a control device 140 which is a control means. The output unit of the control device 140 rotates the registration adjusting device 114, the actuator 116, the suction pumps 128 and 129, a drive motor 151 that rotates the feeding roller 123 forward and backward, and the winding roller 124. A driving motor 152 for rotating the suction roller 125 forward, reverse, a driving motor 154 for rotating the plate cylinder 122, a driving motor 155 for rotating the blanket cylinder 121, and the blanket cylinder 121 ascending and descending. A lifting / lowering device 156 that is a second lifting / lowering moving means, a reciprocating device 157 such as a linear motor that reciprocates the support frame 120 along the guide rail 112, and the slide frame 115 is guided to the guide rail 112. Reciprocation of linear motor, etc. Respectively to the braking system 158 are electrically connected.

  In addition, a rotary encoder 131 provided in the drive motor 151 for detecting the rotational phase of the feed roller 123 and an input part of the control device 140 are added to the feed roller 123 provided in the drive motor 151. A tension sensor 132 that is a first tension detecting means for detecting the tension of the substrate 1 and a drive motor 153 that detects the tension on the upstream side of the substrate 1 relative to the suction roller 125. A tension sensor 133 serving as a second tension detecting means and an input device 141 serving as an input means for inputting various information to the control device 140 are electrically connected to each other.

  That is, the control device 140 controls the operation of the registration adjusting device 114 based on information from the CCD camera 130, and controls the driving motors 151 and 153 based on information from the tension sensors 132 and 133. Based on the information from the rotary encoder 131, the operation of the actuator 116, the suction pump 128, the drive motors 151 to 155, the lifting and lowering device 156, the reciprocating devices 157 and 158, and the like is controlled. The operations of the suction pumps 128 and 129, the drive motors 151 to 155, and the like are controlled based on information from the input device 141 (details will be described later).

  In the present embodiment, the actuator 116, the support block 117, and the like constitute first lifting / lowering movement means, and the first lifting / lowering movement means, the support base 111, the guide rail 112, and the slide frame. 115, the reciprocating device 158 or the like constitutes a first reciprocating means, and the support base 111, the guide rail 112, the support frame 120, the elevating / lowering device 156, the reciprocating device 157, etc. The second reciprocating means, the blanket cylinder 121, the plate cylinder 122, the drive motors 154 and 155, the ink supply device, and the like constitute pattern forming means, and the feeding The roller 123, the drive motor 151 and the like constitute a substrate feeding means, and the winding roller 124, the front By such a driving motor 152, it constitutes a substrate take-up means, the suction roller 125, the suction pump 129, by the driving motor 153 and the like constitute a conveying means.

  Next, the operation of the printing press 100 according to the present embodiment will be described with reference to FIG.

  When information indicating that the operation is started is input to the input device 141, the control device 140 first causes air to be sucked from the suction hole of the suction roller 125 based on the information from the input device 141. The suction pump 129 is operated to suck and hold the substrate 1 on the outer peripheral surface of the suction roller 125.

  Next, the control device 140 controls the drive motors 151 to 153 based on information from the rotary encoder 131 and the tension sensors 132 and 133 so as to position the base material 1 at a predetermined position on the stage 113. The rollers 123 to 125 are rotated by controlling the operation of the above (base positioning step S1).

  When the base material 1 is thus positioned at a predetermined position on the stage 113, the control device 140 suctions the stage 113 based on information from the rotary encoder 131 and the tension sensors 132 and 133. The suction pump 128 is operated so that air is sucked into the inside from the hole, and the base material 1 is sucked and supported on the stage 113 (the base material holding step S2).

  Subsequently, the control device 140 moves the reciprocating device so as to position the slide frame 115 at a start position in the vicinity of the end of the stage 113 on the other side in the longitudinal direction of the guide rail 112 (right side in FIG. 1). 158 and controlling the operation of the actuator 116 so that the squeeze roller 118 is lowered and brought into contact with the substrate 1 on the stage 113, and then the other side in the longitudinal direction of the guide rail 112. The reciprocating device 158 is operated so that the squeeze roller 118 rolls on the substrate 1 of the stage 113 from one side (right side in FIG. 1) to one side in the longitudinal direction (left side in FIG. 1). The slide frame 115 is slid along the guide rail 112, that is, the stage 113 is controlled. It is moved along a direction parallel to the substrate 1 of the surface of the top surface.

  When the squeeze roller 118 is located at the end of the stage 113 on one side in the longitudinal direction of the guide rail 112 (left side in FIG. 1), the control device 140 raises the squeeze roller 118. The operation of the actuator 116 is controlled so as to be separated from the base material 1 on the stage 113, and the operation of the reciprocating device 158 is controlled so as to return the slide frame 115 to the original retracted position. The slide frame 115 is slid from one longitudinal direction side (left side in FIG. 1) of the guide rail 112 toward the other longitudinal direction side (right side in FIG. 1), that is, the base material 1 on the upper surface of the stage 113. It is moved along a direction parallel to the surface.

  As a result, the base material 1 held by suction and supported on the stage 113 is extinguished by wrinkles being stretched, and dust, dust, etc. existing on the base material 1 are removed from the squeeze. It adheres to the outer peripheral surface of the roller 118 and is removed from the substrate 1, adheres to the outer peripheral surface of the adhesive roller 119 that rotates along with the rolling of the squeeze roller 118, and is collected by the adhesive roller 119. The CCD camera 130 moves with the rollers 118 and 119 while photographing so as to detect the position of the substrate 1 with respect to the stage 113 as the slide frame 115 slides. The registration position information on the base material 1 is provided to the control device 140 (the base material wrinkle stretching and registration confirmation step S3).

  Further, the control device 140 controls the operation of the drive motor 151 based on information from the tension sensor 132 so as to loosen the tension of the base material 1 between the feeding roller 123 and the stage 113. As a result, the base material 1 is fed out from the feed roller 123 for a predetermined length, and information from the tension sensor 133 is used so that the tension of the base material 1 between the suction roller 125 and the stage 113 is relaxed. Based on this, by controlling the operation of the drive motor 152, the suction roller 125 is rotated in the reverse direction (counterclockwise in FIG. 1) while the base material 1 is held by suction. Pull back the predetermined length (buffer area forming step S4).

  Next, the control device 140 adjusts the registration of the base material 1 on the stage 113 with respect to the cylinders 121 and 122 based on information input in advance and information from the CCD camera 130. The operation of the register adjusting device 114 is controlled to adjust the position of the stage 113 in the vertical direction (X direction), the left-right direction (Y direction), and the twist direction (θ direction).

  At this time, since the tension between the feeding roller 123 and the stage 113 and the tension between the suction roller 125 and the stage 113 is loosened, the base 1 is loosened. Even if the position in the top-and-bottom direction (X direction), left-right direction (Y direction), and twist direction (θ direction) is adjusted, wrinkles will not occur (the registration adjustment step S5).

  Subsequently, the controller 140 controls the operation of the drive motors 154 and 155 to transfer the ink corresponding to the plate of the plate cylinder 122 to the blanket cylinder 121 and rotates the cylinders 121 and 122. Thereafter, the lifting / lowering device 156 and the reciprocating device 157 are operated so that the ink transferred to the blanket cylinder 121 is printed on the substrate 1 of the stage 113 to form a pattern on the substrate 1. And the blanket cylinder 121 is moved up and down and reciprocated (printing step S6).

  When printing is performed on the base material 1 on the stage 113 to form a pattern in this way, the control device 140 immediately before releasing the tension of the base material 1 between the feeding roller 123 and the stage 113. By controlling the operation of the drive motor 151 based on information from the tension sensor 132 so as to return to the size of Based on the information from the tension sensor 133, the rewinding roller 123 is rewound and the tension between the suction roller 125 and the stage 113 is restored to the size immediately before the substrate 1 is loosened. By controlling the operation of the drive motor 152, the suction roller 125 is rotated in the normal direction while the base material 1 is held by suction (in FIG. 1, Total around) is allowed by the length equal to the length of retraction the substrate 1, i.e., the predetermined length feeding in (or, relief area canceling step S7).

  Then, the control device 140 controls the operation of the suction pump 128 so as to stop the suction of air from the suction hole of the stage 113 and sucks and holds the base material 1 from the stage 113. (The above is the base material release step S8).

  Next, the control device 140 operates the drive motors 151 to 153 based on information from the rotary encoder 131 and the tension sensors 132 and 133 so as to update the substrate 1 on the stage 113. The rollers 123 to 125 are controlled to feed the base material 1 for a predetermined length (the base material feed step S9).

  Hereinafter, by repeating the operations of the above-described steps S <b> 1 to S <b> 9, the substrate 1 is successively formed with patterns while being wound around the winding roller 124.

  Therefore, according to the printing press 100 according to the present embodiment, the following effects can be obtained.

(1) Since the squeeze roller 118 rolls on the base material 1 sucked and held on the stage 113 and the wrinkles of the base material 1 are extended and disappeared, the blanket cylinder 121 is attached to the base material 1. The ink can be printed with high quality, and a high quality pattern can be formed on the substrate 1.

(2) Since dust, dust or the like existing on the base material 1 can be collected by the adhesive roller 119 via the squeeze roller 118, ink is further added to the base material 1. And a higher quality pattern can be formed on the substrate 1.

(3) Since the CCD camera 130 is integrally provided on the slide frame 115 that reciprocally moves the squeeze roller 118 and the adhesive roller 119, the slide 113 moves with respect to the stage 113 as the slide frame 115 slides. Since it can be moved together with the rollers 118 and 119 while photographing so as to detect the position of the base material 1, acquisition of registration position information (registration confirmation) of the base material 1 on the stage 113 and the base material 1. The wrinkle stretching can be performed at the same time, and the working efficiency can be improved.

(4) After the substrate 1 is sucked and held on the stage 113, the tension of the substrate 1 between the feeding roller 123 and the stage 113 is relaxed, and the suction roller 125 and the stage 113 are Since the registration of the base material 1 is adjusted after the tension of the base material 1 is relaxed in the meantime, the vertical direction (X direction), the left and right direction (Y direction), and the twist direction (θ direction) of the stage 113 ) Is not wrinkled on the base material 1 on the stage 113, so that the ink can be printed on the base material 1 with the blanket cylinder 121 with high quality. A high quality pattern can be formed on the substrate 1.

<Other embodiments>
As the reciprocating devices 157 and 158, a rack and pinion, a ball screw, a rodless cylinder, etc. can be applied in addition to the linear motor described above.

  In the above-described embodiment, the squeeze roller 118 and the adhesive roller 119 are rotatably supported by the support block 117 so as to be always in contact with each other. The squeeze roller 118 is pivotally supported on the support block 117 through a long hole oriented in the longitudinal direction to operate the actuator 116 to raise the support block 117 and to lift the squeeze roller 118 and the When the adhesive roller 119 is positioned at the retracted position, the squeeze roller 118 is moved downward with respect to the support block 117 through the elongated hole so as to be separated from the adhesive roller 119, and The support block 117 is lowered and the squeeze roller 118 and the above When the landing roller 119 is positioned at the operating position, the squeeze roller 118 may be moved upward with respect to the support block 117 through the elongated hole so as to come into contact with the adhesive roller 119. Is possible.

  In the above-described embodiment, the rotary encoder 131 and the tension sensor 132 are provided in the drive motor 151 that rotates the feeding roller 123 forward and backward, and the drive motor 153 that rotates the suction roller 125 forward and backward is provided. The tension sensor 133 is provided to detect the feeding amount of the base material 1 based on information from the rotary encoder 131, and based on the information from the tension sensors 132 and 133, the base material 1 between In another embodiment, for example, the tension sensors 132 and 133 are omitted, a rotary encoder is provided in the drive motor 153, and information from the rotary encoder 131 is provided together with the rotary encoder. Based on the above, the feed amount of the base material 1 It is also possible to detect the tension of the substrate 1 between fine said.

  The printing machine according to the present invention can print ink with high quality on a base material, and can form high quality patterns on various base materials irrespective of the presence or absence of stretchability. It can be used beneficially.

DESCRIPTION OF SYMBOLS 1 Base material 100 Printing machine 111 Support stand 112 Guide rail 113 Stage 114 Registration adjusting device 115 Slide frame 115a Connection stay 116 Actuator 117 Support block 118 Squeeze roller 119 Adhesive roller 120 Support frame 121 Blanket cylinder 122 Plate cylinder 123 Feeding roller 124 Winding Roller 125 Suction roller 126 Buffer roller 127 Guide roller 128, 129 Suction pump 130 CCD camera 131 Rotary encoder 132, 133 Tension sensor 140 Control device 141 Input device 151-155 Drive motor 156 Elevating and moving device 157,158 Reciprocating device

Claims (4)

Base material feeding means for feeding out a web-shaped base material;
A transporting means for transporting while holding the base material fed from the base material feeding means;
A stage disposed between the base material feeding means and the transport means and supporting the base material on the upper surface;
A substrate holding means for holding the substrate on the upper surface of the stage;
Stage position adjusting means for adjusting the position of the stage;
In a printing machine comprising: pattern forming means for forming a pattern by printing ink on a substrate on the stage;
After the base material holding means is controlled to hold the base material on the upper surface of the stage, the base material feeding means is controlled so as to loosen the tension of the base material between the base material feeding means and the stage. And a control means for controlling the stage position adjusting means so as to adjust the position of the stage after controlling the transport means so as to loosen the tension of the base material between the stage and the transport means. A printing machine characterized by The printing press according to claim 1, wherein
The control means controls the pattern forming means so as to form a pattern by printing ink on a substrate on the stage after controlling the stage position adjusting means so as to adjust the position of the stage. The printing machine characterized by being. The printing press according to claim 2,
After the control means controls the pattern forming means so as to form a pattern by printing ink on the base material on the stage, the base material tension between the base material feeding means and the stage is relaxed. The base material feeding means is controlled so as to return to the previous size, and the transport means is controlled so as to return to the size immediately before the tension of the base material between the stage and the transport means is relaxed. A printing machine characterized by being. The printing press according to claim 3,
The control means is
When the base material tension between the base material feeding means and the stage is loosened, the base material feeding means is controlled to feed the base material from the base material feeding means toward the stage, while the base When returning to the size immediately before the tension of the base material between the material feeding means and the stage is relaxed, the base material is unwound from the stage toward the base material feeding means with a length equal to the length of the base material. The base material feeding means is controlled,
When the tension of the base material between the stage and the transport means is relaxed, the transport means is controlled so that the base material is pulled back from the transport means toward the stage, and between the stage and the transport means. When the tension of the base material is returned to the size immediately before the base material is loosened, the transporting means is controlled so that the base material is sent out from the stage toward the transporting means with a length equal to the pulled back length. A printing machine featuring.

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