JP7220404B2 - Image relay device, image forming device, and image forming method - Google Patents

Description

The present invention relates to an image relay apparatus, an image forming apparatus, and an image forming method that form an image by temporarily holding a molded paste material and then transferring it to the surface of an object to be formed.

2. Description of the Related Art It is known that when an image such as a character or a pattern is to be formed on the surface of an object to be formed, the image is formed by adhering and fixing a paste material formed in the shape of the image to the surface of the object. For example, after forming a paste material by screen printing and holding it on the surface of an intermediate body, the image of the paste material (hereinafter also simply referred to as a paste image) is transferred to the surface of the formation object and adhered and fixed. As described above, an indirect image forming method in which an image is formed indirectly through an intermediate is known (see Patent Documents 1 and 2, for example).

Here, in the above-mentioned screen printing, it is easier to handle the screen plate as it is flat in order to realize highly accurate image formation. It is more advantageous to adopt a method of transferring after formation (see, for example, Patent Document 2).

In the case of screen printing, it is possible to form an image by directly adhering and fixing a paste material to the surface of an object. is widely used.

WO2014/050560 JP 2016-107407 A

However, in the image formation of the paste material by such a transfer type indirect method (offset printing), the paste image formed on the image forming surface of the intermediate body and temporarily held is pressed against the entire surface of the paste image, and the A paste image is transferred to the surface of the object to be formed.

For this reason, the paste image on the surface of the object to be formed is sandwiched between the surface of the intermediate body and thinned, and transferred and transferred. For this reason, the paste image is transferred to the surface of the object to be formed with some deterioration in formation accuracy on the surface of the intermediate during screen printing. In addition, since this paste image is reversed from the surface of the intermediate body and transferred to the surface of the object to be formed, there may be a difference between the images on the surface of the intermediate body and the surface of the object to be formed. In some cases, it may be difficult to determine whether the desired image is obtained by screen printing alone or whether correction is necessary.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to realize stable image formation on the surface of a forming object by realizing that a paste image held on the surface of the intermediate is transferred to the surface of the forming object as it is.

An aspect of the image relay device that solves the above problems is an image relay device that temporarily holds an image created based on acquired data and transfers it to the surface of an object on which the image is to be formed, wherein the image is: A holding sheet having an area capable of holding at least a part of a paste image made of a paste material to be produced on one side thereof, and a transfer sheet which is bent or curved to extend so as to abut against the surface of the object. an abutment forming member forming a mounting portion on one surface side of the holding sheet; and a moving mechanism for relatively moving the holding sheet, wherein the holding sheet has an adhesion force of the paste image smaller than an adhesion force of the paste image to the surface of the object, and the holding sheet is held on the one surface side. The paste image is transferred to the surface of the object when it moves to the transfer section and contacts the surface of the object.

An aspect of the invention of an image forming apparatus for solving the above problems is the image relay device described above, a stage support device on which the target object is set so that the posture of the surface of the target object can be adjusted, the image relay device and the and a transfer adjustment device that adjusts the relative positional relationship of the stage support device.

One aspect of the invention of an image forming method for solving the above problems is an image forming method in which an image formed based on acquired data is temporarily stored and then transferred to a surface of an object to form an image, the image forming method comprising: After a portion or more of a paste image made of a paste material to be produced as an image is held on one side of a holding sheet, the holding sheet is bent or curved while moving the holding sheet in one direction together with the paste image. The paste image is transferred from one side of the holding sheet to the surface of the object to form an image without reversing the paste image. It is characterized by

Thus, according to one aspect of the present invention, the abutment forming member is abutted against the back side of the holding sheet (intermediate body) that holds at least a part of the paste image on one side, so that the one side is A transfer section is formed which is bent or curved to extend in the width direction. The holding sheet is relatively moved in a direction opposite to the direction of movement of the surface of the object while the transfer section is in contact with the surface of the object.

Therefore, when more than part of the paste image is formed on one side of the holding sheet, the paste image also contacts the surface of the object at the transfer section, and the holding sheet with low adhesion force moves relatively to the object. It is placed on the surface as it is without being reversed and transferred. The holding sheet from which the paste image has been peeled off relatively moves in the direction opposite to the surface of the object to be formed.

Therefore, the paste material on one side surface of the holding sheet can be transferred to the surface of the forming object as it is to form an image, and the image can be easily formed on the forming object surface while maintaining a stable shape.

FIG. 1 is a diagram showing an image forming apparatus in which an image relay apparatus according to an embodiment of the present invention is mounted together with an image forming apparatus and a stage supporting apparatus to execute an image forming method, and is a front view showing a schematic overall configuration thereof. is. FIG. 2 is a side view showing the image forming apparatus. FIG. 3 is a front view of the image forming apparatus as seen from a direction orthogonal to the sliding direction of the screen. FIG. 4 is a side view of the image relay device viewed from the rotation axis direction of the holding sheet. FIG. 5 is a front view of the image relay device viewed from a direction perpendicular to the rotation axis of the holding sheet. 6A and 6B are views showing the stage support device, in which FIG. 6A is an enlarged front view seen in the sliding direction, and FIG. 6B is a side view seen in a direction perpendicular to the sliding direction. 7A and 7B are views for explaining the holding sheet of the image relay device, in which FIG. It is an enlarged view explaining the curved shape which comprises a part. FIG. 8 is an explanatory diagram showing the state at the start of the transfer process for explaining the transfer of the paste image from the holding sheet of the image relay device to the circuit board supported by the stage support device. FIG. 9 is an explanatory diagram showing a state in the middle of the transfer process following FIG. FIG. 10 is an explanatory diagram showing a state in the middle of the transfer process following FIG. 9 . FIG. 11 is an explanatory diagram showing a state in the middle of the transfer process following FIG. 10 . FIG. 12 is an explanatory diagram showing a state in the middle of the transfer process following FIG. 11 . FIG. 13 is an explanatory diagram showing a state in the middle of the transfer process following FIG. 12 . FIG. 14 is an explanatory diagram showing the state at the end of the transfer process following FIG. 13 . FIG. 15 is a perspective view showing the surface shape of a forming object onto which a paste image is transferred. FIG. 16 is a perspective view showing a surface shape of an object to be formed, which is different from that in FIG. FIG. 17 is a plan view showing an example of a paste image formed on the surface of the object to be formed. FIG. 18 is a plan view for explaining the processing procedure for forming the paste image shown in FIG. 17. FIG. FIG. 19 is a plan view for explaining the image forming processing procedure continued from FIG. FIG. 20 is a plan view for explaining the image forming processing procedure following FIG. FIG. 21 is an explanatory diagram illustrating an example of a paste image formed according to the relative speed between the holding sheet and the object to be formed. FIG. 22 is an explanatory diagram illustrating an example of a paste image different from FIG. 21. FIG. FIG. 23 is a conceptual configuration diagram explaining another mode of relative movement between the holding sheet of the image relay device and the object to be formed supported by the stage support device. FIG. 24 is a conceptual configuration diagram explaining another aspect of image formation on a holding sheet of the image relay device.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 22 are diagrams showing an image forming apparatus equipped with an image relay apparatus according to an embodiment of the present invention and executing an image forming method.

In FIGS. 1 and 2, the image forming apparatus 10 includes an image forming device 20, an image relay device 40, a stage support device 60, a position confirming device 80, and a controller 90. FIG. In this image forming apparatus 10, the controller 90 controls the various devices 20 to 80 so that, for example, a resin circuit board B1 having a curved shape is used as an object on which an image is to be formed, and the surface Bs1 of the circuit board has conductivity. A series of image forming processes are executed in which the wiring pattern P is printed by molding the paste material into a predetermined shape and adhering it. Here, the target for image formation is not limited to the circuit board B1 having a curved surface, and may be, for example, a transparent flat display board.

As shown in FIG. 3, the image forming apparatus 20 includes a screen plate 21, a plate supporting portion 23, a slide mechanism 25, a squeegee 31, and a scraper 32, and is made of a paste material to form a wiring pattern P. A paste image Pp (see FIG. 17, for example) is formed on one side surface 41s of a holding sheet 41 of an image relay device 40, which will be described later. Here, the paste image Pp of the paste material adhered and formed on the surface Bs1 of the circuit board B1 is fixed as the wiring pattern P such as resistors and conductive wires by being subjected to heat treatment and the like and baked.

The screen plate 21 is installed on the upper portion of the image forming apparatus 10 by a plate support portion 23 with a screen mesh 21m having openings (not shown) that can be screen-printed attached in a frame. A screen mesh 21m for screen-printing a paste image Pp of the wiring pattern P to be formed on the surface Bs1 of the circuit board B1 is attached to the screen plate 21. As shown in FIG. Here, the screen mesh 21m is formed by, for example, applying a photosensitive (photocurable) resin to the entire surface, exposing and curing portions other than the shape of the wiring pattern P to be formed on the surface Bs1 of the circuit board B1, and cleaning the paste. A desired shape is formed to open through the material.

Further, the screen plate 21 is slidably attached to the upper portion of the image forming apparatus 10 via the rails 25r of the slide mechanism 25 at the plate support portion 23. As shown in FIG. The rails 25r of the slide mechanism 25 slidably support both sides of the screen plate 21 in the sliding direction. Although not shown, the slide mechanism 25 is, for example, a ball screw that is rotatably attached to the edge between the rails 25r of the screen plate 21 and meshes with a fixed nut. , the screen plate 21 can be advanced and retreated in the left and right horizontal directions X (X1, X2) in the figure.

The squeegee 31 and the scraper 32 are supported by a support plate 33 so as to be vertically movable toward and away from the screen mesh 21m of the screen plate 21, and the pressure at which the tip contacts the screen mesh 21m is adjusted appropriately. Pressure regulators 35 and 36 for regulating the pressure are attached to the top of each. The squeegee 31 and the scraper 32 are discharged from discharge ports (not shown) so that the paste material is spread over the entire surface of the screen mesh 21m of the screen plate 21 between them in the width direction.

Of these, the squeegee 31 descends and moves the screen mesh 21m in a state where the tip edge 31s is pressed against the screen mesh 21m in the right and left direction X1 in the figure, thereby removing the paste material on the side of the scraper 32 which is spaced upward. are adjusted to collect while pushing into the opening of the In addition, the scraper 32 moves the screen mesh 21m in a state in which the tip side 32s is lowered to separate the paste material on the side of the squeegee 31, which is separated upward, by moving the screen mesh 21m relative to the other left and right direction X2 in the figure. It is adjusted so that the desired thickness remains on the entire surface while being collected on the side.

As a result, the image forming apparatus 20 slides the screen mesh 21m of the screen plate 21 horizontally in the forward (forward) direction X1 while the squeegee 31 at a fixed position presses the tip side 31s with a predetermined pressure. A paste material having a predetermined thickness on the screen mesh 21m is brought into contact with and adhered to one side surface 41s of a holding sheet 41 of an image relay device 40, which will be described later, positioned under the squeegee 31, so that a paste image Pp having a desired thickness is placed thereon. formed in After that, while the scraper 32 at a fixed position maintains the predetermined distance between the leading edge 32s, the screen mesh 21m of the screen plate 21 slides horizontally in the reverse (return) direction X2, thereby causing the screen mesh 21m to slide. The remaining paste material as well as the additional supply of paste material are trimmed to a predetermined thickness in preparation for the next imaging (printing) process. At this time, if there is no next image forming process, a recovery process of the general-purpose paste material is performed, and then a cleaning process of the screen mesh 21m is performed to avoid the paste material from sticking. be.

As shown in FIGS. 4 and 5, the image relay device 40 includes a holding sheet 41, a rotary driving member (moving mechanism) 43, a knife edge 45 (abutment forming member), a .theta. and a mechanism 57 . The image relay device 40 screen-prints the paste image Pp produced by the image production device 20 onto the surface 41s of one side of the holding sheet 41, and the circuit board supported by the stage support device 60 with the paste image Pp left as it is. The base of the wiring pattern P is fixedly formed by moving so as to replace it on the surface Bs1 of B1, that is, by transferring it.

The holding sheet 41 is formed in a wide belt shape and is made into a smoothly continuous seamless ring shape (circulating shape), and is wound around the rotary drive member 43 and the knife edge 45 . The rotary drive member 43 is formed in a cylindrical shape whose axis coincides with the width direction of the holding sheet 41, and is rotatably connected to a drive unit main body 43H which is connected to a stay 53 on the main body side of the apparatus described later so as not to rotate relative to each other. Supported. The rotary drive member 43 is installed so as to be rotatably driven by a motor 44 fixed to the main body of the apparatus. The knife edge 45 is formed in the shape of a thin plate projecting in a direction away from the rotation center of the rotation driving member 43, and is linearly extended to bend the holding sheet 41 at an acute angle by a tip side (protrusion) 45s. Then, a bent surface 41st is formed on the tip side of the one side surface 41s. The motor 44 rotates the rotary drive member 43 by transmitting the rotary power of the rotary shaft 44s through the transmission mechanism in the support shaft 43Hs of the drive section main body 43H. 45 s of tip sides of this knife edge 45 are formed in the shape which extends linearly, but are not restricted to this. For example, when the holding sheet 41 is flexible, the front end side of the surface 41s of the holding sheet 41 is deformed along the shape of the surface of the object by following the tip side 45s of the knife edge 45. A shape such as a curve in the width direction may be given to the curved surface 41st. Further, in the present embodiment, the rotation driving member 43 is provided with the driving portion main body 43H, and while installing the structure of the θ fixing mechanism 51 (such as a fixing bolt 55b for fixing the support plate 54) to be described later, the rotational driving of the stay 53 is performed. Although the relative rotation of the member 43 (holding sheet 41) is achieved, it is not limited to this. For example, the structure such as the fixing bolt 55b of the θ fixing mechanism 51 may be integrally installed at the part where the stay 53 is branched and extended so as to sandwich the support plate 54, and the relative rotation position of the support plate 54 may be adjusted. In addition, the part shown in the rotary drive member 43 may be made of a rubber member that provides a frictional force, and the drive unit main body 43H itself may be directly rotated by the rotary shaft of the motor 44.

Here, the holding sheet 41 does not absorb the solvent contained in the paste material that is adhered and formed as the paste image Pp of the wiring pattern P. A sheet material is selected and produced in which the one-side surface 41s is lower than the surface Bs1 of the substrate B1. For example, as the holding sheet 41, a material is selected that has a lower affinity for the paste material of the one-side surface 41s than the surface Bs1 of the circuit board B1. As a result, the paste material in contact with both adheres to the surface Bs1 of the circuit board B1 with greater adhesion than the one-side surface 41s of the holding sheet 41, and is held by the one-side surface 41s of the holding sheet 41. The paste image Pp is adhered and formed so as to be remounted on the surface Bs1 of the circuit board B1. In addition, since the holding sheet 41 has a higher surface smoothness than the surface Bs1 of the circuit board B1, the holding sheet 41 has the same affinity with the paste material. The paste image Pp can be formed by adhering to the surface Bs1 of the circuit board B1 with a large adhesive force without slipping. Furthermore, since the holding sheet 41 does not absorb the solvent of the paste material, it is possible to form a wet paste image on the surface of the forming object without requiring solvent absorption time (shortening the working time). A highly accurate paste image can be adhered and formed without being affected by absorption (swelling) such as the above. The material and thickness of the holding sheet 41 are not particularly limited. Various optimum forms may be employed, such as making it possible to adhere and form the paste image Pp following slight unevenness.

As a result, the holding sheet 41 is brought into contact with the tip side 45s of the knife edge 45 with the other side back surface 41b (see FIG. 7A) while being wrapped around the cylindrical rotation driving member 43. It is rotated around and driven around the screen plate 21 (screen mesh 21m). At this time, the holding sheet 41 is placed at a position facing the screen mesh 21m so that the screen plate 21 is not displaced from the screen mesh 21m at the image receiving position on the upper side of the device approaching the screen plate 21 of the image forming device 20 and receiving the paste image Pp. It is rotated so as to move relative to each other at the same speed and in the same direction. For this reason, the paste material formed into a predetermined shape by the screen mesh 21m of the screen plate 21 moved at the same relative speed contacts and adheres to the one side surface 41s of the holding sheet 41 without being deformed. A high-quality image is formed so as to be placed as a paste image Pp having a thickness of .

The knife edge 45 is formed in a plate-like shape extending in the width direction of the holding sheet 41 , and both end sides of the knife edge 45 are attached to support plates 54 to be described later so as to protrude outward away from the rotation center of the rotary drive member 43 . is attached to the projecting shape tip portion 54a of the. The knife edge 45 abuts against the other side back surface 41b (see FIG. 7A) of the holding sheet 41 around which the tip side 45s is formed to become thinner toward the tip side, thereby rotating the rotation driving member 43. It is bent outside the outer circumference of the A pair of pressure regulators 46 on both ends of the knife edge 45 are attached to the support plate 54 to regulate the pressure with which the tip edge 45 s is pressed against the back surface 41 b of the holding sheet 41 .

As a result, the holding sheet 41 is bent at an angle Db (Fig. 7 ( a)) is driven in a circle with an acute angle. For this reason, the holding sheet 41 allows the paste image Pp to come into close contact with the surface Bs of the circuit board B (see FIG. 7(b)) while the cylindrical shape of the rotary drive member 43 remains unchanged. The inclination angle Ds (see FIG. 7(a)) of the tip side 45s of the knife edge 45 with respect to Bs1 is made as acute as possible, and is rotated together with the rotary drive member 43 thereof.

Therefore, the paste image Pp adhering to the one side surface 41s of the holding sheet 41 is brought into close contact with the surface Bs of the circuit board B from the leading end side bent surface 41st and sent out while being gently bent, so that the front and back can be reversed. It is transferred to the surface Bs1 and adhered to the surface Bs1 while maintaining high quality without being greatly deformed. That is, the leading end side curved surface 41st of the holding sheet 41 constitutes a transfer section. Further, even when the surface Bs of the circuit board B has a curved surface Bsc1, which is smaller than the cylindrical shape of the rotation driving member 43, the holding sheet 41 abuts the inner surface of the holding sheet 41 against the inner surface of the curved surface 41st on the distal end side to form the paste image Pp. is similarly bent by the tip side 45s of the knife edge 45 so that it can be transferred. As shown in FIG. 7B, even when the paste image Pp is brought into close contact with the surface of the object to be formed while the holding sheet 41 is in a curved shape along the cylindrical shape of the rotation driving member 43, the holding sheet 41 is rotated. If the curved surface is larger than the member 43, the paste image can be deposited in close contact with the inner surface.

The θ fixing mechanism 51 includes a stay 53 that connects and supports a support shaft 43Hs of a driving portion main body 43H that rotatably supports the rotary driving member 43 so as not to rotate relatively, and a support shaft 43Hs of the driving portion main body 43H that is connected to the shaft hole 54h. A support plate 54 that is rotatably supported through the support plate 54 and an arc shape centered on the rotation shaft (shaft hole 54h) of the support plate 54 that is connected and fixed to the drive unit main body 43H (stay 53) so as not to rotate relative to each other. A fixing member 55 consisting of a fixing bolt 55b slidably inserted into a slide hole 54s and a fixing nut 55n engaged with the fixing bolt 55b. In the θ fixing mechanism 51, a fixing bolt 55b protruding outward parallel to the axial direction from the end surface of the driving portion main body 43H is passed through a slide hole 54s of a support plate 54, and a fixing nut 55n is attached with a washer 55w interposed therebetween. By meshing, the support plate 54 can be tightened to position and fix the θ rotation position. can position and fix the .theta.-rotation position of the tip side 45s. Note that the support plate 54 is provided with a tension roller 56 that applies a constant tension so that the holding sheet 41 that is wound around the rotation driving member 43 via the leading edge 45s of the knife edge 45 is not loosened. .

As a result, the .theta. of the knife edge 45 about the shaft hole 54h of the support plate 54 can be fixed. can be fixed.

The vertical movement mechanism 57 supports the stay 53 by rails 57r so as to be slidable in the vertical direction. 45 is configured to adjust the height of the tip side 45s of the holding sheet 41 and the rotation driving member 43 integrally. Here, the vertical movement mechanism 57 is not shown, but for example, like the slide mechanism 25, the stay 53 can be guided by the rails 57r and moved vertically by a motor with a ball screw and a fixed nut. . Alternatively, the vertical movement mechanism 57 may be manually moved vertically without using a power source such as a motor to position and fix the vertical movement mechanism 57 . The vertical movement mechanism 57 has a vertical slide groove 57s (see FIG. 1) formed on the inner surface side of the front cover and the rear cover of the device main body, and the drive unit main body rotatably supports the rotary drive member 43. The vertical movement of the stay 53 is supported by storing and supporting both ends of the support shaft 43Hs of the support shaft 43H so as to be slidable in the vertical direction while restricting lateral swing.

As a result, the vertical movement mechanism 57 moves the leading end side curved surface 41st of the holding sheet 41 attached to the one side surface 41s with the paste image Pp produced by the image producing device 20 placed thereon to the stage supporting device 60. It can be stably fixed at a position abutting on the surface Bs1 of the supported circuit board B1.

As shown in FIG. 6, the stage support device 60 includes a stage 61, a position adjustment mechanism 63, a pedestal portion 65, a β rotation mechanism 67, a stay 69, and a slide mechanism 71 (shown in FIG. 1). Built to be ready. The stage supporting device 60 transfers the paste image Pp held on the holding sheet 41 to the surface Bs1 of the circuit board B1 supported by the stage 61 so as to smoothly receive the paste image Pp, thereby forming the base of the wiring pattern P. Realize

Here, the circuit board B1 for image formation on which the paste image Pp of the wiring pattern P is to be adhered has an axis parallel to the rotation axis of the rotation drive member 43 of the image relay device 40 (the support shaft 43Hs of the drive unit main body 43H). is formed at the center between flat surfaces Bsf11 and Bsf12 on both sides thereof.

The stage 61 incorporates a support mechanism 61a for positioning and fixing by suction. Even if the attitude is changed from a horizontal state to an inclined state by a β rotation mechanism 67, which will be described later, the front surface Bs1 of the circuit board B1 on which an image is to be formed is maintained. To fix the rear side by suction without shifting its position.

As a result, the stage 61 can support the circuit board B1 and maintain a state in which the front end side curved surface 41st of the holding sheet 41 moved up and down by the vertical movement mechanism 57 is in contact with the surface Bs1. For this reason, the paste image Pp placed on the one side surface 41s of the holding sheet 41 is sent out from the leading end side curved surface 41st of the holding sheet 41 (see FIG. 7A), and the circuit board B1 is smoothly transferred to and adhered to the surface Bs1 including the curved surface Bsc1.

The position adjustment mechanism 63 is installed between the stage 61 and a pedestal portion 65, which will be described later, and finely adjusts the horizontal relative position with respect to the tip side curved surface 41st of the holding sheet 41 (the tip side 45s of the knife edge 45). come true. 1, the depth direction Y in FIG. 1, and the rotation direction α about the central center line A of the stage 61. It has a configuration that realizes As such a position adjusting mechanism 63, a linear rail in the X direction or the Y direction or a rotary rail in the axis center is installed, and a mechanism for sliding in each direction by means of a ball screw can be installed to enable adjustment. You can also use micrometer expansion and contraction to achieve finer fine-tuning. For example, in the position adjusting mechanism 63, after loosely adjusting in the XY and α directions and temporarily fixing, finely adjusting in the XY and α directions and finally fixing, high-accuracy adjustment is achieved. can be realized. Note that the position adjusting mechanism 63 is not limited to manual adjustment, and for example, a ball screw or a micrometer may be rotationally driven by a motor to automatically adjust the desired amount.

Thereby, the position adjustment mechanism 63 can adjust the stage 61 in the XY direction and the α direction with respect to the base portion 65, and the paste image Pp on the one side surface 41s of the holding sheet 41 can be adjusted to a desired relative posture. The relative position of the stage 61 with respect to the tip side 45s of the knife edge 45 can be adjusted so that the stage 61 is transferred from the side curved surface 41st.

The pedestal portion 65 is rotatably supported by a stay 69 via a β rotation mechanism 67 which will be described later. The β rotation mechanism 67 rotatably supports both ends of the rotation shaft 65s of the base portion 65 parallel to the rotation shaft (support shaft 43Hs of the drive section main body 43H) of the rotation drive member 43 of the image relay device 40 on the stay 69. ing. The β rotation mechanism 67 rotates the rotating shaft 65 s of the pedestal portion 65 forward and backward by a motor 68 to rotate the front end side curved surface 41 st (knife The relative attitude (inclination) of the edge 45 with respect to the tip side 45s) is adjusted.

As a result, the β rotation mechanism 67 of the pedestal portion 65 relatively rotates the stage 61 according to the attitude of the surface Bs1 of the circuit board B1 supported by the stage 61, thereby rotating the holding sheet 41 relative to the tip side bending surface 41st. While stabilizing the posture, the paste image Pp can be transferred from the one-side surface 41s to the surface Bs1 of the circuit board B1 without any burden, thereby forming a stable high-quality image.

In the slide mechanism 71, a stay 69 that rotatably supports a rotating shaft 65s of a pedestal 65 (stage 61) is horizontally slidably supported by rails 71r. The slide mechanism 71 adjusts the relative position of the front surface Bs1 of the circuit board B1 supported by the stage 61 with respect to the leading end side bent surface 41st of the holding sheet 41 by horizontally moving the stay 69 by a motor (not shown). . Here, the slide mechanism 71 is not shown, but like the slide mechanism 25, for example, the stay 69 can be guided by the rails 71r and horizontally moved by a motor with a ball screw and a fixing nut. . Further, the slide mechanism 71 may be manually moved up and down to be positioned and fixed without using a power source such as a motor. The slide mechanism 71 has a horizontal slide groove 71s (see FIG. 1) formed on the inner surface side of the front cover and the rear cover of the apparatus main body, and vertically moves both ends of the rotation shaft 65s of the pedestal 65. Sliding movement of the stay 69 is supported by horizontally slidably accommodating and supporting the stay 69 while restricting movement.

As a result, the slide mechanism 71 slides the paste image Pp formed and held on the one side surface 41s of the holding sheet 41 along with the rotational movement of the holding sheet 41 to move the circuit board B1 supported by the stage 61. By sliding and moving, it can be smoothly replaced on the surface Bs1.

Returning to FIGS. 1 and 2, the position confirming device 80 is supported by the stage 61 at a separated position where the stay 69 of the stage supporting device 60 is slid by the slide mechanism 71 and separated from below the image relay device 40. It is constructed by two sets of cameras 81 and 82 for photographing the surface Bs1 (formation object surface) of the circuit board B1, and a monitor 85 for displaying and outputting the photographed images. When the paste image Pp is adhered and formed on the surface Bs1 of the circuit board B1 and printed, the position confirmation device 80 is not shown in the figure, but marks such as crosses are also formed at two locations outside the paste image Pp. Images are captured by cameras 81 and 82 and displayed on a monitor 85 together with two corresponding alignment marks.

The position confirming device 80 checks the images captured by the cameras 81 and 82 so that the relative positional relationship between the image forming device 20, the image relay device 40, and the stage support device 60 can be adjusted with high accuracy. The monitor 85 has a resolution that can be adjusted to a few μm to enlarge and display the photographed image. By adjusting the positions of the cameras 81 and 82, the resolution can be gradually adjusted from coarse resolution to high precision. there is Here, by allowing the position adjusting mechanism 63 to perform the adjustment work using two points for each of the mark image and the alignment mark, it is possible to adjust the α rotation direction. As the alignment mark, a pattern that can be appropriately and easily discriminated may be selected and used according to the pattern and fineness of the paste image Pp. The position confirmation device 80 may automatically adjust the XY direction and the α-rotation direction by the position adjustment mechanism 63 so that the mark image and the alignment mark are automatically matched by image processing. Needless to say.

As a result, the position checking device 80 adjusts the position adjustment mechanism 63 of the stage supporting device 60 in the XY direction and the α direction so that the mark image matches the alignment mark, thereby adjusting the leading end side of the holding sheet 41 with respect to the stage 61 . The position can be adjusted such that the bent surface 41st (the tip side 45s of the knife edge 45) is aligned with high accuracy.

The controller 90 includes a CPU (Central Processing Unit) and various memories, and connects the image production device 20, the image relay device 40, the stage support device 60, and the position confirmation device 80 so that various information can be exchanged. It is The controller 90 is set with various data such as the shape of the surface Bs of the circuit board B1 to be printed and the paste image Pp (wiring pattern P), and executes a prestored control program to control the various devices 20. 80 are linked to drive the paste image Pp screen-printed with high accuracy onto the surface Bs1 of the circuit board B1 while maintaining the shape as it is to transfer the paste image Pp to form a high-quality image of the wiring pattern P (image formation). method).

The controller 90 controls, for example, the horizontal movement speed and movement position of the screen plate 21 in the image production device 20, the rotation speed and rotation amount of the holding sheet 41 in the image relay device 40, the stage 61 ( The rotational speed and amount of rotation along with the horizontal movement speed and movement position of the circuit board B) are calculated and obtained based on the number of rotations of each motor, the amount of rotation of the power transmission mechanism, the diameter of the rotary drive member 43, and the like. can be done. For this reason, the controller 90 calculates and obtains, for example, the relative movement speed of the screen plate 21 and the holding sheet 41 and the relative movement speed including the rotation of the holding sheet 41 and the stage 61 (circuit board B), and obtains the same-size relative movement speed. Each can be moved at a moving speed, and as will be described later, one can be moved relative to the other at a predetermined double speed. That is, the controller 90 constitutes a speed detection section and a speed adjustment section, and also includes a slide mechanism 25, a rotation drive member 43, a .theta. , etc., constitute a manufacturing adjustment device, a transfer adjustment device, and an attitude adjustment device.

Specifically, as shown in FIG. 1, the image forming apparatus 10 (controller 90) positions the screen plate 21 of the image forming apparatus 20 at the start position and raises the image relay apparatus 40, thereby moving the screen mesh 21m. The upper part of the holding sheet 41 is brought close to the bottom of the squeegee 31 to position and support. After that, by moving the holding sheet 41 together with the screen plate 21 in the same direction at the same relative speed, the paste material selectively passing through the openings of the screen mesh 21m is adhered to the one side surface 41s to form the paste image Pp. is formed from one end side.

Next, after the stage support device 60 is slid below the image relay device 40 , the image relay device 40 is lowered so that the front end side curved surface 41st of the holding sheet 41 is placed on the surface Bs 1 of the circuit board B 1 on the stage 61 . After contact, the holding sheet 41 is relatively moved together with the stage 61 in the opposite direction of movement on the contact surface, so that the one side surface 41s holding the paste image Pp and the surface Bs1 of the circuit board B1 are aligned. relative velocity. As a result, the paste image Pp sent out from the tip-side bent surface 41st of the holding sheet 41 is attached to the surface Bs1 of the circuit board B1 and transferred so as to be replaced. In this case, it is not necessary to adhere and form the paste image Pp on the entire surface Bs1 of the circuit board B1 in one transfer process. It may be formed in a plurality of times, or may be formed by a plurality of times of transfer processing for each part of the paste image Pp.

At this time, the holding sheet 41 is wound around the rotary drive member 43 and rotates, and as shown in FIG. The curved side surface 41st is continuous with the surface Bs1 of the circuit board B1 so as to be connected at a small inclination angle Ds. Further, the supporting stage 61 is horizontally slid so that the surface Bs1 of the circuit board B1 with which the tip end side curved surface 41st of the holding sheet 41 abuts moves relatively in the same direction as the paste image Pp is delivered. . For this reason, the paste image Pp sent out from the tip-side bent surface 41st while being held on the one-side surface 41s by the circular driving of the holding sheet 41 touches the surface Bs1 of the circuit board B1 moving in the same direction and is deformed at a small deformation angle ( By being received at the large included angle Dt) between the one side surface 41s of the holding sheet 41 and the surface Bs1 of the circuit board B1, the circuit board B1 is not turned upside down as it is and can be smoothly transferred without being burdened by deformation. , is formed on the surface Bs1 of the circuit board B1. At this time, the paste image Pp to be transferred from the surface 41s of the holding sheet 41 to the surface Bs1 of the circuit board B1 is loaded according to various characteristics such as differences in adhesive strength and wettability with respect to individual paste materials, or viscosity. As a result, the amount of deformation, etc., that is applied to the surfaces 41s and Bs1 changes.

Here, as shown in FIG. 7B, in the image relay device 40, the holding sheet 41 is simply wrapped around the cylindrical rotary drive member 43 without being bent around the leading edge 45s of the knife edge 45. A structure may be adopted in which the surface Bs1 of the circuit board B1 is in contact with the curved shape. It abuts on the surface Bs1 of the substrate B1. Then, the paste image Pp held on the holding sheet 41 adheres to the one side surface 41s rotating in the direction opposite to the sliding direction of the circuit board B1. Bs1 is brought into contact with the substrate Bs1 so as to be twitched, and is deformed at a large deformation angle (a small included angle Dt between the one-side surface 41s of the holding sheet 41 and the surface Bs1 of the circuit board B1). be done. For this reason, the paste image Pp held on the one side surface 41s of the holding sheet 41 is delivered from the leading end side curved surface 41st by providing the knife edge 45 as in the present embodiment. It is preferable that the image is formed on the surface Bs1 of the circuit board B1 smoothly and with high quality.

8 to 14, the image relay device 40 and the stage support device 60 are rotated by the rotary drive member 43 to the end position of the wiring pattern P formed on the circuit board B1 supported by the stage 61. The paste image Pp held by the holding sheet 41 is adhered and formed on the surface Bs1 of the circuit board B1 by relatively moving the holding sheet 41 from the position in which the leading end side bent surface 41st of the holding sheet 41 is brought into contact with the holding sheet 41. Image formation processing (image transfer processing) is executed.

Specifically, first, the stage 61 moves to the right in FIG. 1, and the rotation driving member 43 descends, so that the leading end side curved surface 41st of the holding sheet 41 is bent to the one-sided flat surface Bsf11 of the surface Bs1 of the circuit board B1. (FIG. 8). From this state, the holding sheet 41 is rotated by the rotation drive member 43 to the one end side Bse11 (FIG. 9), which is in front of the curved surface Bsc1 on the other end side of the flat surface Bsf11. Moving. As a result, the paste image Pp held by the holding sheet 41 is smoothly transferred to and adhered to the flat surface Bsf11 on one side of the circuit board B1 in front of the curved surface Bsc1.

Next, the stage 61 is rotated by the β rotation mechanism 67 about the rotation shaft 65s of the base portion 65 so that the tip side curved surface 41st of the holding sheet 41 is brought into contact with the shape of the curved surface Bsc1 of the circuit board B1. 1, the holding sheet 41 is rotated by the rotary driving member 43 (FIGS. 10 to 12). At this time, the β rotation mechanism 67 avoids contact of the surface Bs1 of the circuit board B1 supported by the stage 61 with the portion of the holding sheet 41 deviated from the leading end side curved surface 41st, and rotates the one side of the holding sheet 41. The included angle Dt between the surface 41s and the surface Bs1 of the circuit board B1 is made as large as possible, in other words, the deformation angle associated with the remounting of the paste image Pp is made small (with the one-side surface 41s of the holding sheet 41). The pedestal portion 65 is rotated so that the included angle Dt between it and the surface Bs1 of the circuit board B1 is increased and small deformation is sufficient. As a result, the paste image Pp held by the holding sheet 41 is smoothly transferred and adhered to the curved surface Bsc1 of the circuit board B1 with a small deformation.

After that, the stage 61 rotates around the rotary shaft 65s of the base portion 65 so that the tip-end-side bent surface 41st of the holding sheet 41 is brought into contact with the shape of the flat surface Bsf12 on the other side from the curved surface Bsc1 of the circuit board B1. While being rotated by the β rotation mechanism 67, the holding sheet 41 moves leftward in FIG. is rotated by the rotary drive member 43 (FIGS. 13 and 14). At this time, the β rotation mechanism 67 rotates the surface Bs1 of the circuit board B1 supported by the stage 61 so as to return it to a horizontal state, and sandwiches the surface Bs1 with the one side surface 41s of the holding sheet 41 holding the paste image Pp. The angle Dt is increased, and the paste image Pp is transferred to the flat surface Bsf12 on one side of the circuit board B1 at a small deformation angle Dt to be adhered and formed. As a result, the paste image Pp held by the holding sheet 41 is smoothly transferred and adhered to the flat surface Bsf12 on one side of the circuit board B1 beyond the curved surface Bsc1.

By the way, for example, as shown in FIG. 15, a circuit board B2 has a rectangular surface Bs2, and between flat surfaces Bsf21 to Bsf23 of the surface Bs2, there are two curved surfaces perpendicular to the longitudinal direction in the X direction in the figure. The plane Bsc2 may be formed in parallel. In this case, as described above, the tip side curved surface 41st (the tip side 45s of the knife edge 45) of the holding sheet 41 orthogonal to the moving direction X of the stage 61 is directly applied to the surface Bs2 including the curved surface Bsc2 of the circuit board B2. , the paste image Pp is adhered and formed. The circuit board B2 may be formed by alternately or discontinuously forming the paste images Pp on the flat surfaces Bsf21 to Bsf23 and the two curved surfaces Bsc2.

On the other hand, for example, as shown in FIG. 16, in addition to the curved surface Bsc31 perpendicular to the surface Bs3 of the rectangular circuit board B3 in the X direction (longitudinal direction) in the figure, there is A curved surface Bsc32 that intersects at an angle may be formed. In this case, after the flat surface Bsf32 is formed from the flat surface Bsf31 via the curved surface Bsc31, the stage 61 is α-rotated by the position adjustment mechanism 63 so that the edge side Bse33 of the inclined curved surface Bsc32 of the circuit board B3 is formed. The tip side curved surface 41st (the tip side 45s of the knife edge 45) of the holding sheet 41 is brought into contact with each other. The paste image Pp is adhered and formed by relatively moving each including the flat surface Bsf33 via the end side Bse34. It goes without saying that this circuit board B3 may also have a procedure in which the paste images Pp are adhered and formed alternately or discontinuously on the flat surfaces Bsf31 to Bsf33 and the curved surfaces Bsc31 and Bsc32.

Specifically, for example, as shown in FIG. 17, a circuit board B4 has a rectangular surface Bs4, and a curved surface Bsc41 that is substantially extended in the longitudinal direction of the Y direction in the drawing and is continuous with the surface Bs4. 43 may be formed between flat surfaces Bsf41 and Bsf42. In this circuit board B4, an intermediate curved surface Bsc42 intersects both the longitudinal direction of the Y direction in the figure and the lateral direction of the X direction in the figure at an angle, and on both ends of the curved surface Bsc42, parallel to the Y direction in the figure. Curved surfaces Bsc41 and Bsc43 are formed so as to be continuous. On the circuit board B4, a wiring pattern P (paste image Pp) linearly extending in the lateral direction X near the center of the longitudinal direction Y of the surface Bs4 is formed along with flat surfaces Bsf41 and Bsf42 and a curved surface Bsc42 therebetween. is also formed.

In this case, for example, as shown in FIG. 18, paste images Pp are sequentially adhered to the flat surfaces Bsf41 and Bsf42 of the surface Bs4 of the circuit board B4, and then the surface Bs4 is placed on the stage 61 as shown in FIG. The holding sheet 41 is rotated in the α direction about the center line A so that the tip side curved surface 41st (the tip side 45s of the knife edge 45) of the holding sheet 41 is brought into contact with one side edge Bse41 of the curved surface Bsc42, and then, As shown in FIG. 20, the paste image Pp is adhered and formed up to the edge Bse42 on the opposite side of the curved surface Bsc42. In this circuit board B4, the procedure of alternately forming the paste images Pp on the flat surfaces Bsf41 and Bsf42 and the curved surface Bsc42 will be described as an example. Alternatively, the paste images Pp may be adhered and formed on the flat surfaces Bsf41 and Bsf42 and the curved surface Bsc42 in random order and discontinuously. It goes without saying that it is good.

Here, the paste image Pp formed on the curved surface Bsc42 of the circuit board B4 is formed parallel to the lateral direction X of the surface Bs4 of the circuit board B4. By intersecting both the X and the longitudinal direction Y, the holding sheet 41 is obliquely fed (inclined) with respect to the moving direction. For this reason, as the image forming process for attaching the paste image Pp to the curved surface Bsc42 of the circuit board B4, the paste image Pp that is oblique to the moving direction (circling direction) of the holding sheet 41 of the image relay device 40 is formed. After the paste image Pp is formed on the one-side surface 41s by screen printing by the image forming device 20, the paste image Pp is formed on the curved surface Bsc42 so as to form an image. In addition, the stage 61 that supports the circuit board B4 by the stage support device 60 can be rotated in the .alpha. After a parallel paste image Pp is formed on the one surface 41s by screen printing by the image forming device 20, the paste image Pp is placed on the curved surface Bsc42 while gradually sliding the stage 61 in the Y direction. Alternatively, the image may be formed by adhering and forming.

In short, for the surface Bs4 of the circuit board B4, the stage 61 is moved in the XY directions and the Image formation in which the paste image Pp held on the one side surface 41s of the holding sheet 41 is deformed in the XY direction and the α direction by being slid and rotated in the α direction and transferred to the surface Bs4 of the circuit board B4 to form an adherent image. Processing can also be employed.

Further, since the stage support device 60 includes the slide mechanism 71 that moves the stage 61 in the X direction with respect to the image relay device 40, the rotation speed of the holding sheet 41, that is, the paste image Pp from the tip-side curved surface 41st The relative speed between the sending speed and the sliding speed of the surface Bs4 of the circuit board B4 can be adjusted.

Therefore, the length of the paste image Pp formed on the surface Bs of the circuit board B in the X direction can be increased or decreased by adjusting the relative speed between the circulating speed of the holding sheet 41 and the sliding speed of the circuit board B. . For example, as shown in FIG. 21, by changing the sliding speed of the circuit board B with respect to the revolving speed of the holding sheet 41, the paste image Pp remains the same size at 1x speed in the X direction, and doubles at 2x speed. , and at 3× speed, the adhesion is formed by being elongated 3 times. Note that the paste image Pp is adhered and formed in the Y direction at the same size (×1).

In addition, the thickness of the paste image Pp formed on the surface Bs of the circuit board B in the Z direction can be increased or decreased by adjusting the relative speed between the circulating speed of the holding sheet 41 and the sliding speed of the circuit board B. For example, as shown in FIG. 22(b), by changing the sliding speed of the circuit board B with respect to the revolving speed of the holding sheet 41, the paste image Pp remains the same size at 1x speed in the X direction, and 1/1 speed. At 2× speed, the film thickness is doubled, and at 1/3× speed, the film thickness is increased by 3 times. At this time, the paste image Pp shown in FIG. 22A is held by the holding sheet 41 in order to make the area ratio of the size in the X direction formed on the surface Bs of the circuit board B the same size (×1). In order to double the film thickness, the length (area) in the movement direction is also doubled, and in order to triple the film thickness, the length in the movement direction is 3 doubling. Note that the paste image Pp is adhered and formed in the Y direction at the same size (×1).

As described above, in the image forming apparatus 10 of the present embodiment, the paste image Pp to be screen-printed with high accuracy is held on the one side surface 41s of the holding sheet 41, and the holding sheet 41 is held by the leading edge 45s of the knife edge 45. The paste image Pp is sent out from the tip side bent surface 41st formed by bending toward the surface Bs of the circuit board B relatively moving in the same direction.

For this reason, the paste image Pp adhering to the one side surface 41s of the holding sheet 41 contacts and adheres to the surface Bs of the circuit board B, which has a large adhesion force. is transferred so as to be remounted on the surface Bs of .

Therefore, the paste image Pp screen-printed on the one side surface 41s of the holding sheet 41 with high accuracy is transferred to the surface Bs of the circuit board B with high quality while the shape is stabilized with little deformation, and image formation (printing) is performed. can do.

Here, in the above-described embodiment, the position of the tip side curved surface 41st (the tip side 45s of the knife edge 45) of the holding sheet 41 is fixed, and the stage 61 of the stage support device 60 is slid in the X direction by the slide mechanism 71. The paste image Pp is adhered and formed on the surface Bs having the curved surface of the circuit board B by being rotated by the β rotation mechanism 67, but the present invention is not limited to this. For example, as shown in FIG. 23, the leading end side curved surface 41st of the holding sheet 41 of the image relay device 40 is a surface having a curved surface of the circuit board B that moves in the X direction by being vertically moved by the vertical movement mechanism 57. It may be possible to follow changes in Bs. Further, in this case, even if the leading end side curved surface 41st of the holding sheet 41 is rotatable around the rotation axis of the rotary drive member 43 (the support shaft 43Hs of the drive section main body 43H) by the rotation of the support plate 54, good. Furthermore, when such a rotation mechanism is added, the β rotation mechanism 67 of the stage support device 60 can be omitted.

Furthermore, in the above-described embodiment, the case where the paste image Pp to be formed on the one side surface 41s of the holding sheet 41 is screen-printed by the image forming apparatus 20 is described as an example. An image may be formed according to the method. For example, as shown in FIG. 24, the conductive ink I for the wiring pattern P stored between the pair of rollers R1 and R2 is applied to the circuit pattern formed on the outer peripheral surface of one of the rollers R1 and R2, and the holding sheet 41 is formed. A so-called coater printing method may be adopted in which the image is transferred by contacting and rotating the one-side surface 41s. Further, a paste material is applied to the one-side surface 41s of the holding sheet 41 with a dispenser to form a paste image. You may make it employ|adopt the system to form.

In the above-described embodiment, the case where the holding sheet 41 is wrapped around the rotary drive member 43 that rotates by transmitting the power of a motor or the like separately from the movement of the circuit board B will be described as an example. However, it is not limited to this. For example, although not shown in the drawings, the rotary driving member around which the holding sheet is wound is driven via a power transmission mechanism such as a gear train interlocking with a roller or the like that rotates while being pressed against the surface Bs of the circuit board B. By transmitting rotational power, it is possible to make the relative speeds of the advancing speed of the roller (moving speed of the surface Bs) and the circulating rotational speed of the holding sheet the same, or to make a set relative speed difference. It may be realized.

The scope of the invention is not limited to the illustrated and described exemplary embodiments, but also includes all embodiments that provide equivalent results for which the invention is intended. Furthermore, the scope of the invention is not limited to the combination of inventive features defined by each claim, but may be defined by any desired combination of the particular features of each of the disclosed features. .

REFERENCE SIGNS LIST 10: Image forming device 20: Image forming device 21: Screen plate 25, 71: Slide mechanism 31: Squeegee 32: Scraper 40: Image relay device 41: Holding sheet 41s: One surface 41st ... Tip-side bending surface 43 ... Rotary drive members 44, 68 ... Motor 45 ... Knife edge 45s ... Tip side 51 ... θ fixing mechanism 53, 69 ... Stay 54 ... Support plate 54a ... Protruding shape Tip portion 54s Slide hole 55 Fixed member 57 Vertical movement mechanism 57s Vertical slide groove 60 Stage support device 61 Stage 63 Position adjustment mechanism 67 β rotation mechanism 80 Position Confirmation devices 81, 82 Camera 85 Monitor 90 Controller A Center line B, B1 to B4 Circuit board Bs, Bs1 to 4 Surface Bsc1, Bsc2, Bsc31, Bsc32, Bsc41 to 43... …Curved surface P …Wiring pattern Pp …Paste image

Claims (10)

An image relay device that temporarily holds an image created based on acquired data and transfers it to the surface of an object on which the image is to be formed,
a holding sheet having an area capable of holding, on one side thereof, at least a portion of the paste image made of the paste material produced as the image;
an abutment forming member that bends or curves the holding sheet to form, on one surface side of the holding sheet, a transfer section that is extended so as to be able to abut against the surface of the object;
a movement mechanism for moving the holding sheet relative to the transfer portion of the holding sheet formed by the abutment forming member in a direction opposite to the direction in which the surface of the object relatively moves;
with
In the holding sheet, the adhesive strength of the paste image is smaller than the adhesive strength of the paste image to the surface of the object, and the paste image held on the one surface side moves to the transfer section and moves to the surface of the object. An image relay device characterized in that it is transferred to the surface of the object when it comes into contact with the object. 2. The image according to claim 1, wherein the abutment forming member has a projecting portion that projects so as to form the transfer portion that bends the holding sheet at an acute angle and abuts against the surface of the object. Relay device. The holding sheet is formed in a circulating shape so as to be able to repeatedly pass through the transfer section formed by the abutment forming member, and is set in the moving mechanism so as to pass through the transfer section. 3. The image relay device according to claim 1 or 2, wherein: a speed detection unit for detecting a relative movement speed of the surface of the object moving relative to the transfer unit formed by the abutment forming member of the holding sheet;
4. The movement mechanism according to any one of claims 1 to 3, wherein the moving mechanism relatively moves the holding sheet with respect to the transfer section formed by the abutment forming member based on the information detected by the speed detecting section. 2. The image relay device according to item 1. The moving mechanism has a speed adjusting section for adjusting a relative moving speed of the holding sheet with respect to the surface of the object, which passes through the transfer section formed by the abutment forming member. Item 5. The image relay device according to any one of Item 4. an image relay device according to any one of claims 1 to 5;
a stage support device on which the object is set so that the posture of the surface of the object can be adjusted;
a transfer adjustment device that adjusts the relative positional relationship between the image relay device and the stage support device;
An image forming apparatus comprising: 6. The transfer adjustment device comprises a posture adjustment device that adjusts a posture in which the transfer portion of the holding sheet of the image relay device contacts the surface of the object of the stage support device. The image forming apparatus according to . an image production device for producing the paste image on one side of the holding sheet of the image relay device;
a production adjustment device that adjusts the relative positional relationship between the image relay device and the image production device;
8. The image forming apparatus according to claim 6, comprising: An image forming method for temporarily holding an image created based on acquired data and then transferring the image to the surface of an object to form an image,
After a portion or more of the paste image made of the paste material to be produced as the image is held on one side of the holding sheet,
While the holding sheet is moved in one direction together with the paste image, the holding sheet is bent or curved to abut against and contact the surface of the object that is relatively moved in the opposite direction, thereby changing the front and back of the paste image. An image forming method, wherein the holding sheet is transferred from one side of the holding sheet to the surface of the object to form an image without reversing the holding sheet. 10. The method according to claim 9, wherein the image is formed by transferring the paste image from one side of the holding sheet to the surface of the object by adjusting the moving speed of the holding sheet relative to the surface of the object. Imaging method.

Images