JP5257305B2 - Offset printing device - Google Patents

Description

  The present invention relates to an offset printing apparatus used for offset printing a precise print pattern on a printing target with high printing accuracy, as in the case of forming an electrode pattern on a substrate by printing.

  One of the printing technologies is offset printing. Among these, offset printing using an intaglio is a target to be printed from the blanket roll after ink is once transferred (received) to a blanket roll that rolls from the inked intaglio. It is known as a technique capable of printing the intaglio printing pattern on the surface to be printed with good reproducibility by performing retransfer (printing) of the ink to the surface.

  By the way, in recent years, as one of the methods for forming an electronic circuit such as a liquid crystal display on a required substrate such as a glass substrate or a resin substrate, instead of fine processing such as etching of a metal vapor deposition film, conductive There has been proposed a technique of printing and forming an electronic circuit on a substrate using a printing technique using a paste as a printing ink, for example, an intaglio offset printing technique.

  When an electronic circuit such as the liquid crystal display is formed on a substrate, a fine line width of about 10 μm, for example, may be required as an electrode line width. In addition, a plurality of electronic circuits may be formed on the substrate in a superimposed manner. In this case, the overprinting of the electronic circuits is performed by replacing the plate. However, if the printing position is shifted, the entire configuration of the electronic circuits is destroyed. However, in the case of a precise electronic circuit in which the line width is about 10 μm, the positional deviation of the print position between the electronic circuits to be superimposed is on the order of several μm to sub μm. It may be necessary to keep it at a minimum.

  Therefore, when an electronic circuit is formed on the substrate by printing, a very high printing accuracy is required as compared with normal offset printing in which characters and images are printed on paper or the like.

  FIG. 8 shows an outline of an example of an offset printing apparatus conventionally proposed for performing offset printing of an electrode pattern using a flat plate, and is driven on a base 1 by a servo motor (stage motor) 3. A platen plate 6 and a printing platen that hold a flat plate (intaglio plate) 5 at a position above the ball screw mechanism 2 on the base 1 so as to extend in a uniaxial direction. A moving table (stage) 4 formed by arranging the work surface plate 8 holding the target work 7 in the uniaxial direction is provided so as to be movable in the uniaxial direction along the guide rail 9. 4 can be reciprocated by the ball screw mechanism 2.

  Further, a blanket roll (blanket cylinder) 10 is arranged at a position above the required dimension of the moving table 4 so as to extend in a direction perpendicular to the moving direction of the moving table 4 and in a horizontal direction, and the rotary shafts 11 at both ends thereof are arranged. In addition, it is configured to be individually supported by a constant pressure device 12 having an elevating mechanism for performing roll pressurization.

  Reference numeral 13 denotes a rotation driving motor for the blanket roll 10, which is connected to one rotary shaft 11 of the blanket roll 10 via a speed reducer 14. 15 is an inking device (doctor device) for inking the plate 5 held on the plate surface plate 6, and 16 is each time the work 7 held on the work surface plate 8 of the moving table 4 is replaced. An alignment device (alignment scope) for aligning the workpiece 7.

  According to the offset printing apparatus having such a configuration, the plate 5 held on the plate surface plate 6 is guided to the inking device 15 by the movement of the moving table 4 by the ball screw mechanism 2, and the plate 5 is inked. Then, as the moving table 4 is moved by the ball screw mechanism 2, the plate 5 on the plate surface plate 6 and the work 7 held on the work surface plate 8 are sequentially placed at the lower position of the blanket roll 10. By making the blanket roll 10 rotated by the rotation driving motor 13 come into contact with the plate 5 and the work 7 in order from the upper side while pressing the plate 5 and the workpiece 7 so as to have a required contact pressure (printing pressure). The printing pattern is transferred (received) from the inked plate 5 to the blanket roll 10, and then the blanket roll 10 performs the above process. Over retransfer printing pattern to click 7 (printing) by causing the process are also available implement offset printing (e.g., see Patent Document 1).

  Note that an offset printing apparatus for performing offset printing of a precise printing pattern such as an electrode pattern has a base 1 having a high rigidity in the same manner as the offset printing apparatus shown in FIG. 8 in order to maintain high printing accuracy. A moving table 4 for moving the plate 5 and the work 7 to be printed relative to the blanket roll 10 on the base 1, the blanket roll 10 and a constant pressure device for pressurizing the roll. In general, a configuration in which the motor 12, the rotational drive motor 13, the inking device 15, and the alignment device 16 are all provided integrally is widely performed.

Japanese Patent No. 3459781

  However, as the size of the substrate increases with the increase in the screen size of the liquid crystal display, etc., the size of the offset printing device for precision printing increases accordingly, and the size of the offset printing device increases accordingly. Although the weight increases, in the conventional offset printing apparatus that performs precision printing as shown in FIG. 8 above, the allowable weight of the crane or truck used when carrying out transportation from the manufacturing factory or transportation to the site of use. Therefore, when the transport weight exceeds the allowable weight of the required crane or truck, it is necessary to transport using a large crane or truck having a larger allowable weight. Therefore, the labor and cost required for conveyance increase.

  However, in the conventional offset printing apparatus for precision printing, as in the offset printing apparatus shown in FIG. 8 above, all are integrally provided on the rigid base 1 to keep the printing accuracy high. In general, a single-piece structure is generally used. Therefore, it has been considered that a transport method other than a batch transport of the entire offset printing apparatus for precision printing has not been considered in the past. is there.

  Accordingly, the present inventors have made an offset printing apparatus that performs precise printing, the weight when transporting the offset printing apparatus as a structure that can be divided without causing a decrease in printing accuracy, and the entire offset printing apparatus. In order to manufacture high-precision printing equipment as a result of repeated efforts and research to reduce the weight compared to the weight when transporting the batch, the entire equipment must be assembled at the time of manufacture in the factory. It is necessary to increase the printing accuracy by adjusting each part while performing the actual printing process. To maintain the printing accuracy high, a plate held on a moving table that runs along the guide rail While it is necessary to maintain the accuracy of the relative arrangement of the printing object and the blanket roll and the accuracy of the relative movement direction, the inking device for inking the plate is originally worn out. It is necessary to periodically replace the blade, and the inking state is readjusted every time the blade is replaced, and the alignment device for aligning the plate and the printing object is originally As the preparatory work before starting the printing work, paying attention to the alignment sensor that detects the alignment mark provided on the plate or the printing object, the inking device and the alignment device are Thus, the present invention has been made by finding that readjustment and calibration can be easily performed even if the printer is once removed and reassembled after completion of the printing apparatus, and therefore the printing accuracy is not reduced.

  Therefore, it is an object of the present invention to perform precise offset printing, and can be divided and reassembled without causing a decrease in printing accuracy. The offset printing device that can reduce the transport weight compared to the case where the entire printing device is collectively transported, and thus can reduce labor and cost required for transport. It is something to be offered.

  In order to solve the above-mentioned problems, the present invention provides a guide rail extending in one direction on the gantry main body, corresponding to claim 1, and an individual or common holding a plate and a printing object on the guide rail. The movable table is attached to be able to run, and a bed portion extending in the width direction is integrally provided at a required portion of the gantry body, a frame straddling the guide rail on the bed portion, and a longitudinal direction of the guide rail. A blanket roll extending in an orthogonal direction, a drive mechanism for raising and lowering the blanket roll, and a transfer mechanism section provided with a drive motor for rotating the blanket roll are installed. A wing member for installing the inking device is removably attached to both sides of the guide rail at right angles so as to sandwich the guide rail, and On the upper side of the ring device installation for wing member, the both widthwise end portions of the arranged inking device so as to straddle the guide rail, and removably mounting comprising configuration.

  Further, in the above configuration, the alignment device installation wing member is removably attached so as to sandwich the guide rails on both sides of a required portion different from the inking device installation wing member attachment location of the gantry body, The alignment apparatus for aligning the printing object and the printing plate held on each alignment stage for the printing table on the moving table running on the guide rail and the printing object on the upper side of the wing members for alignment apparatus installation on both sides. It is set as the structure which attached to the width direction both ends so that removal is possible.

According to the offset printing apparatus of the present invention, the following excellent effects are exhibited.
(1) A guide rail extending in one direction is provided on the gantry body, and an individual or common moving table that holds the printing plate and the printing object is movably attached on the guide rail, and at a required position of the gantry body, A bed portion projecting in the width direction is integrally provided, a frame straddling the guide rail on the bed portion, a blanket roll extending in a direction perpendicular to the longitudinal direction of the guide rail, and a drive mechanism for raising and lowering the blanket roll And a transfer mechanism section comprising a drive motor for rotating the blanket roll, and further, sandwiching the guide rails on both sides of the frame body at the required positions in the longitudinal direction at right angles to the guide rails. The inking device installation wing members are detachably attached, and the guide levers are disposed above the inking device installation wing members on both sides. The inking device is placed so that both ends in the width direction of the inking device are detachably attached so that the inking device and each inking device installation wing member are removed from the gantry body during transport. Therefore, the weight of each transport target can be reduced as compared with the case where the entire offset printing apparatus is transported collectively. For this reason, since it becomes possible to use a smaller crane or truck at the time of transportation, it becomes possible to reduce labor and cost required for transportation.
(2) Moreover, the plate (printing object) held on the moving table that runs along the guide rail and the blanket roll of the transfer mechanism unit are brought into contact with each other to perform transfer (acceptance) processing and retransfer (printing) processing. In this case, the guide rail, the blanket roll support mechanism, and the movement of the plate and the printing target are involved in the straightness accuracy in the direction perpendicular to the roll axis direction of the blanket roll of the moving table immediately below the blanket roll. Since all the mechanisms for synchronizing the speed and the peripheral speed of the blanket roll and controlling the phase of the blanket roll in contact with the plate or printing object can be transported as an integral part of the gantry body and bed, transfer The possibility that the accuracy of the (acceptance) process and the retransfer (printing) process will be reduced can be solved.
(3) The inking device can be reattached on site, and the original inking accuracy can be easily recovered by performing readjustment of the inking state at that time.
(4) Attach the alignment device installation wing member so that the guide rail is sandwiched on both sides of a required location different from the mounting position of the inking device installation wing member installation location of the gantry body, and align both sides The widthwise ends of the alignment apparatus for aligning the printing object with the printing plate held on each alignment stage for printing on the moving table running on the guide rail and the printing object, on the upper side of the apparatus installation wing member By adopting a configuration in which the section is detachably attached, the plate and the printing target held on the alignment stage for the printing plate and the printing target of the moving table can be aligned with the alignment device and conveyed. Sometimes, the alignment device and each wing member for installing the alignment device Since it can be removed from the body, the above-mentioned alignment device and each alignment device installation wing member are also individually transported to reduce the transport weight even for offset printing devices of the type equipped with the alignment device. Can do.
(5) The alignment apparatus can be reattached in the field, and the initial alignment accuracy can be easily recovered by performing calibration at that time.
(6) As described above, it is possible to perform precise offset printing without being affected by the division during conveyance even after conveyance.

It is a schematic plan view which shows one Embodiment of the offset printing apparatus of this invention. FIG. 2 is a schematic side view of the apparatus of FIG. 1. It is a top view which shows the outline | summary of the division | segmentation state of the apparatus of FIG. It is a side view which shows the outline | summary of the division | segmentation state of the apparatus of FIG. FIG. 3 is an enlarged cut front view showing a transfer mechanism portion as seen from the AA direction in FIG. 2. It is a front view which expands and shows the attachment part of the wing member in the mount main body of the apparatus of FIG. FIG. 7 is a side view of FIG. 6. It is a figure which shows the outline | summary of an example of the offset printing apparatus using the plate-shaped plate proposed conventionally.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 to 7 show an embodiment of an offset printing apparatus according to the present invention, which has the following configuration.

  That is, two guide rails 18 extending in one direction (X-axis direction) are provided as a set on the upper side of a horizontal high-rigidity gantry body 17 extending in the X-axis direction, which is one direction.

  On the guide rail 18, as a moving table for holding a flat plate 19 and a flat print object 20 such as a substrate, for example, a plate that can hold the plate 19 and the print object 20 individually. The table 21 and the printing target table 22 are arranged side by side from one end side in the longitudinal direction of the guide rail 18 (from the left side in FIG. 1), and the tables 21 and 22 are made to correspond to the inside of the guide rails 18. It is attached so as to be able to reciprocate (run) independently by an individual drive device 23 such as a provided linear motor. The plate table 21 and the printing target table 22 are horizontally moved in the longitudinal direction (X-axis direction) of the guide rail 18 and the direction perpendicular to the plate rail 18 (Y-axis direction) and rotated at the yaw angle θ. It is assumed that alignment stages 21a and 22a capable of adjusting the positions of XYθ in the three-axis directions are provided, and the plate 19 and the printing target 20 can be held on the alignment stages 21a and 22a, respectively.

  Further, the plate table 21 and the printing target table 22 are provided on the gantry body 17 by means of a common linear scale 24 provided in parallel with the guide rate 18 at a required position between the guide rails 18 on the gantry body 17. Each position along the longitudinal direction, that is, an absolute position in the X-axis direction with reference to a required point in the X-axis direction can be detected.

  In the middle position in which the plate table 21 and the printing target table 22 can travel together in the longitudinal direction of the guide rail 18, for example, in the longitudinal intermediate portion of the gantry body 17 corresponding to the longitudinal intermediate position of the guide rail 18 A wide and rigid bed portion 25 is integrally provided on both sides of the gantry body 17 in the width direction, and a transfer mechanism portion 26 is provided above the bed portion 25.

  For example, as shown in FIG. 5, the transfer mechanism section 26 includes a portal frame 27 installed on the bed section 25 so as to straddle the guide rail 18, and the guide rail 18 above the guide rail 18. A blanket roll 28 arranged so as to extend in a horizontal direction (Y-axis direction) orthogonal to the longitudinal direction of the frame and the rotary shafts 28a, 28b at both ends of the blanket roll 28 are rotatably held on the frame 27 in the vertical direction. A roll support frame 29 that is mounted so as to be movable up and down via a guide 30, a rotation drive motor 31 connected to one rotation shaft 28 a of the blanket roll 28 for rotationally driving the blanket roll 28, and the blanket The other rotation axis of the blanket roll 28 for detecting the rotation speed and rotation angle of the roll 28 An encoder 32 directly connected to 8b; and a lift drive mechanism 33 for driving the blanket roll 28 up and down integrally with the roll support frame 29; and a pressure sensor 34 such as a load cell attached to the lift drive mechanism 33. It is set as the structure provided with. As a result, the plate table 21 that holds the plate 19 that travels along the guide rail 18 by the driving device 23 and the print target table 22 that holds the print target 20 are positioned directly below the blanket roll 28 in the transfer mechanism 26. The blanket roll 28 that is lowered integrally with the roll support frame 29 by the elevating drive mechanism 33 while being driven to rotate (roll) by the rotation drive motor 31 when passing is held on the plate table 21. The printing plate 19 and the printing object 20 held on the printing object table 22 are sequentially brought into contact with each other from above to transfer (accept) from the printing plate 19 to the blanket roll 28, and from the blanket roll 28. The retransfer (printing) process to the printing object 20 can be performed.

  Further, during the transfer (acceptance) process and the retransfer (printing) process, the travel of the tables 21 and 22 is obtained as a time change of the position in the X-axis direction of the tables 21 and 22 detected by the linear scale 24. The moving speed of the plate 19 or the printing object 20 according to the speed can be synchronized with the peripheral speed of the blanket roll 28 derived from the rotational speed of the blanket roll 28 detected by the encoder 32. The positions of the plate 19 and the printing object 20 measured based on the X-axis direction positions of the tables 21 and 22 detected by the linear scale 24 and the rotation angle of the blanket roll 28 detected by the encoder 32 Based on this, the outer peripheral surface of the blanket roll 28 is brought into contact with the plate 19 and the printing object 20 in the same phase. It is to be able.

  Furthermore, the contact when the blanket roll 28 is brought into contact with the plate 19 on the plate table 21 and the print target 20 on the print target table 22 during the transfer (acceptance) process and the retransfer (print) process. The pressure (printing pressure) can be detected by the pressure sensor 34. Therefore, the height position of the blanket roll 28 integrated with the roll support frame 29 by the elevating drive mechanism 33 is corrected so that the contact pressure detected by the pressure sensor 34 is uniformly maintained at a required pressure value. I can do it.

  On the both sides in the width direction of the portion of the gantry body 17 that is closer to one end in the longitudinal direction than the bed portion 25 (leftward in FIG. 1), a wing member 35 for installing an inking device having a horizontal upper surface is removed. Along with the Y-axis direction so as to straddle the guide rail 18 at a height position corresponding to the height position of the surface of the plate 19 held on the plate table 21 that travels along the guide rail 18. The both ends of the inking device 36 disposed in the width direction are detachably attached to the upper sides of the respective inking device installation wing members 35 on both sides in the width direction through the support base 37. Thereby, the plate table 21 holding the plate 19 is caused to travel along the guide rail 18 and sent to the inking device 36, so that the plate 19 held on the plate table 21 is moved to the inking device 36. Inking into the plate 19 can be performed by sliding a blade (not shown).

  Further, the alignment device installation wing member 38 having a horizontal upper surface is removed on both sides in the width direction of the portion of the gantry body 17 that is closer to the other end in the longitudinal direction than the bed portion 25 (rightward in FIG. 1). A gate-type support frame that is attached to each other as much as possible, and is connected to the upper ends of the left and right support legs 40a having a required height by a beam member 40b so that the tables 21 and 22 can pass through the inside. 40 and the plate 19 held on the plate table 21 and the two positions corresponding to the diagonal positions of the print target 20 held on the print target table 22 or the four positions corresponding to the corners. The support frame in the alignment apparatus 39 comprising the alignment sensor 41 such as a camera held on the beam member 40b of the support frame 40 Each support leg 40a of the left and right 0 is placed respectively on the upper side of the width direction on both sides of each alignment device installation for wing member 38. As a result, the plate table 21 holding the plate 19 and the printing target table 22 holding the printing target 20 are run along the guide rail 18 and sent to the alignment device 39 so as to be required inside the support frame 40. In this state, an alignment marker (not shown) provided in advance on the diagonal or each corner of the plate 19 and the printing object 20 is detected by the corresponding alignment sensor 41, and the position of the detected alignment marker is detected. However, the positions of the plate 19 and the printing object 20 are corrected by the operation of the alignment stages 21a and 22a of the tables 21 and 22 so as to coincide with a predetermined reference position. Alignment is possible.

  Specifically, from the viewpoint of reducing the weight, it is preferable that the width of the gantry body 17 be as narrow as possible within a range in which the installation location of the pair of guide rails 18 can be secured.

  As shown in FIGS. 6 and 7, the wing members 35, 38 are provided on the upper end portion of the vertical plate member 42 to be arranged along the side surface of the gantry body 17. The horizontal plate-like member 43 for forming the upper surface is integrally attached with the edge portion on the side disposed near the gantry body 17, and the vertical plate-like member 42 is provided with a plurality of horizontal intervals, and the horizontal plate-like member. The reinforcing rib member 44 is attached between the corresponding portions of the member 43.

  In addition, a positioning tool 45 having a locking portion 45a projecting outward at the lower end portion is attached in advance to the attachment portion of each wing member 35, 38 on the side surface of the gantry body 17, When attaching each wing member 35, 38 to the side surface of the gantry body 17, the lower end of the vertical plate-like member 42 in each wing member 35, 38, preferably the lower end near the attachment location of the rib member 44, is provided. It is possible to easily position the wing members 35, 38 in the vertical direction by locking the portion on the upper side of the locking portion 45 a of the positioning tool 45 attached in advance to the side surface of the gantry body 17. In this state, the wing members 35 and 38 are bolted to the positioning tool 45 with removable bolts 46. A.

  When transporting the offset printing apparatus of the present invention having the above configuration, as shown in FIGS. 3 and 4, the inking device 36 and its support base 37 are placed from above each inking device installation wing member 35. Further, each inking device installation wing member 35 is removed from the side surface of the gantry body 17.

  In addition, the alignment device 39 is removed from the alignment device installation wing members 38, and the alignment device installation wing members 38 are removed from the side surfaces of the gantry body 17.

  As a result, the conveyance target is driven by the gantry body 17, the bed portion 25 integral with the gantry body 17, the guide rail 18 provided on the gantry body 17, the plate table 21, the printing target table 22, and the driving of the tables 21 and 22. An apparatus, a linear scale 24 for the position in the X-axis direction, and an integral unit composed of the transfer mechanism 26 provided on the bed 25, the inking device 36 and its support base 37, an alignment device 39, Since it is divided into the wing members 35 and 38, the individual conveyance weight is reduced by individually conveying the respective divided objects as compared with the case where the entire offset printing apparatus of the present invention is conveyed all at once. become.

  Thereafter, after each of the divided items is individually conveyed to the use site of the offset printing apparatus of the present invention, the wing members 35 and 38 are reattached to the side surface of the gantry body 17 at the use site. At the same time, the offset printing apparatus of the present invention is assembled by attaching the inking device 36, its support 37, and the alignment device 39 to the corresponding wing members 35 and 38, respectively.

  Thereafter, the inking device 36 is readjusted in an inking state similar to that at the time of blade replacement, and the alignment device 39 is calibrated.

  As described above, according to the offset printing apparatus of the present invention, the inking device 36 and the support base 37, the wing members 35 used for the installation thereof, the alignment device 39, and the wing members 38 used for the installation are mounted on the gantry. Since it can be removed from the main body 17 and can be divided at the time of transportation, the weight of each object to be transported can be reduced as compared with the case of collectively transporting the entire offset printing apparatus of the present invention. Since smaller cranes and trucks can be used, it is possible to reduce labor and cost required for transportation.

  In addition, in the offset printing apparatus of the present invention, the blanket roll 28 is brought into contact with the plate 19 held on the plate table 21 traveling along the guide rail 18 and the printing target 20 held on the printing target table 22. When performing transfer (acceptance) processing and retransfer (printing) processing, the plate table 21 immediately below the blanket roll 28 of the transfer mechanism 26 and the direction orthogonal to the roll axis direction of the blanket roll 28 of the printing target table 22 are used. The guide rail 18 involved in the accuracy of the straightness, the support mechanism of the blanket roll 28, the synchronization of the moving speed of the plate 19 and the printing object 20 and the peripheral speed of the blanket roll 28, and the plate 19 and the printing object 20. All the devices involved in the control of the phase of the blanket roll 28 to be brought into contact with the gantry body 17 and the bed portion 25, Since it is conveyed as a physical object, the accuracy of straightness in the direction perpendicular to the roll axis direction of the plate table 21 and the blanket roll 28 of the printing target table 22 immediately after the blanket roll 28 of the transfer mechanism 26 is determined Further, it is possible to eliminate the possibility that the accuracy of synchronizing the moving speed of the plate 19 or the printing target 20 with the peripheral speed of the blanket roll 28 or the accuracy of controlling the phase of the blanket roll 28 brought into contact with the plate 19 or the printing target 20 is lowered. .

  The inking device 36 can be easily restored to its original inking accuracy by re-adjusting the inking state after re-installation at the site, and the alignment device 39 can be realigned after re-installation at the site. By performing the calibration of 41, the alignment accuracy can be easily recovered, so that the possibility of adversely affecting the printing accuracy can be eliminated.

  Further, since the bed portion 25 is provided in the longitudinal direction intermediate portion of the gantry body 17 and the transfer mechanism portion 26 is provided above the bed portion 25, the inking device 36 and its support base 37, the alignment device 39, and Since the center of gravity when each wing member is removed can be positioned in the vicinity of the intermediate portion in the longitudinal direction of the gantry main body 17, that is, inside the transfer mechanism portion 26 in a plan view, the transfer above the position of the center of gravity. By suspending the upper part of the mechanism part 26, it becomes possible to improve the balance when suspended.

  The present invention is not limited to the above embodiment, and the transfer mechanism 26 is held on the plate 19 held on the plate table 21 running on the guide rail 18 and on the printing target table 22. As long as the blanket roll 28 can be sequentially brought into contact with the printing object 20, any type of transfer mechanism unit 26 other than the illustrated one may be used.

  Further, the present invention may be applied to an offset printing apparatus in which the plate 19 and the printing target 20 are held on a common moving table that runs on the guide rail 18 via individual alignment stages.

  The size of each device illustrated in the offset printing apparatus of the present invention is a convenient size for illustration, and the dimensional ratio of each device is appropriately changed according to the size of the plate 19 or the printing target 20 to be used. May be.

  Furthermore, the print target 20 may be any print target 20 other than the substrate.

  Of course, various modifications can be made without departing from the scope of the present invention.

17 Base body 18 Guide rail 19 Version 20 Print target 21 Version table (moving table)
21a Alignment stage 22 Print target table (moving table)
22a Alignment stage 25 Bed portion 26 Transfer mechanism portion 27 Frame 28 Blanket roll 31 Rotation drive motor 33 Lifting drive mechanism 35 Inking device installation wing member 36 Inking device 38 Alignment device installation wing member 39 Alignment device

Claims (2)

  A guide rail extending in one direction is provided on the gantry body, and an individual or common moving table that holds the plate and the printing object is movably mounted on the guide rail, and the width direction is set at a required position of the gantry body. An overhanging bed part is provided integrally, a frame straddling the guide rail on the bed part, a blanket roll extending in a direction perpendicular to the longitudinal direction of the guide rail, a drive mechanism for raising and lowering the blanket roll, and a blanket An inking device in which a transfer mechanism comprising a roll rotation driving motor is installed, and the guide rail is sandwiched between both sides of the frame body at a required position in the longitudinal direction at right angles to the guide rail. The installation wing members are detachably attached, and the guide rails are placed above the inking device installation wing members on both sides. The both widthwise end portions of the inking device disposed in Guyo, offset printing apparatus characterized by having a removably attached comprising configuration.   Attach the alignment device installation wing member so that the guide rail is sandwiched on both sides of the required location different from the installation location of the wing member installation location of the gantry body. On the upper side of the wing member, both ends in the width direction of the alignment apparatus for aligning the printing object and the printing object held on each alignment stage for printing on the moving table running on the guide rail and the printing object, The offset printing apparatus according to claim 1, wherein the offset printing apparatus is detachably attached.

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