Rotary jig for object to be printed on and printer

Abstract

The present invention provides a rotary jig 80 for an object to be printed on, said jig supporting and rotating a cylindrical object 5 to be printed on, and being installed in a printer 10 comprising a light-radiating device 50 that radiates light to cure ink and an ink head 40 which is disposed farther in a first scanning direction Y1 than the light-radiating device 50 and which ejects ink. The rotary jig 80 for an object to be printed on comprises: a first rotary member 100 and a second rotary member 110 that can rotate about an axis extending in a scanning direction Y; support members 90, 130 that rotatably support the first rotary member 100 and the second rotary member 110; and a light-shielding member 140. The light-shielding member 140 comprises a first light-shielding part 141R which extends in an orthogonal direction X orthogonal to the scanning direction Y and which faces a lateral surface, in the first scanning direction Y1, of the object 5 to be printed on that is supported by the first rotary member 100 and the second rotary member 110.

Description

Printing substrate rotating jig and printer

[0001] The present invention relates to a printing substrate rotating jig and a printer equipped with the same.

[0002] Print substrate rotation jigs used when printing on the cylindrical surface of a cylindrical print substrate and attached to a printer have been known for some time. For example, Patent Document 1 (JP-A-2005-102626) discloses a cylindrical object jig that includes a pair of rotating shafts, each equipped with a roller, and a frame supporting the pair of rotating shafts, and is placed on the stage of an inkjet printer. The inkjet printer includes a stage, a head that ejects UV ink, an ultraviolet irradiation unit that irradiates ultraviolet light to cure the UV ink, a carriage that carries the head and the ultraviolet irradiation device and moves back and forth in a predetermined X direction, and a bridge that moves the carriage in a Y direction perpendicular to the X direction. In the inkjet printer described in Patent Document 1, the frame of the cylindrical object jig is fixed to the bridge, and the roller is in contact with the stage. According to Patent Document 1, moving the bridge relative to the stage rotates the roller in contact with the stage. The rotation of the roller rotates the cylindrical print substrate placed on the roller.

[0003] Japanese Patent Application Laid-Open No. 2017-159301

[0004] When the cylindrical substrate is transparent, a portion of the light emitted from the light irradiation device passes through the substrate. A portion of the light that passes through the substrate and is reflected by a member below the substrate passes through the substrate again and is irradiated onto the ink head. If the reflected light from the light irradiation device reaches the ink head, the ink in the ink head may thicken, causing problems with the ink head.

[0005] The present invention has been made in view of the above points, and its object is to provide a substrate rotation jig that can reduce the amount of reflected light that reaches the ink head when the cylindrical substrate is transparent, and also to provide a printer equipped with such a substrate rotation jig.

[0006] The printing substrate rotation jig disclosed herein is for a printer including an ink head that ejects ink, a light irradiation device that irradiates light to cure the ink, a carriage that holds the ink head and the light irradiation device, and a moving device that moves the carriage in a predetermined scanning direction. The printing substrate rotation jig is placed below the carriage and supports and rotates a cylindrical printing substrate, and includes a first rotating member, a second rotating member, a support member, and a light-blocking member. The ink head is disposed in a first scanning direction, which is one of the scanning directions, relative to the light irradiation device. The first rotating member is configured to be rotatable about an axis extending in the scanning direction. The second rotating member is configured to be rotatable about an axis extending in the scanning direction. The support member rotatably supports the first rotating member and the second rotating member. The light-shielding member has a first light-shielding portion that faces the side of the printing substrate supported by the first rotating member and the second rotating member in the first scanning direction and extends in a direction perpendicular to the scanning direction.

[0007] In the printer, when the moving carriage is at a specific position in the scanning direction, the reflected light emitted from the light irradiation device passes through the side surface of the printing substrate in the first scanning direction and heads toward the ink head. However, with the printing substrate rotating jig, the first light-shielding section, which is arranged to face the side surface of the printing substrate supported by the printing substrate rotating jig in the first scanning direction and extends in the perpendicular direction, can block the reflected light that passes through the side surface of the printing substrate in the first scanning direction. This reduces the amount of reflected light that reaches the ink head.

[0008] 1 is a perspective view of a printer according to an embodiment; FIG. 1 is a perspective view showing the internal structure of the printer; FIG. 2 is a plan view showing the internal structure of the printer; FIG. 2 is a perspective view of a rotating jig; FIG. 3 is a front view of the rotating jig; FIG. 4 is a plan view of the rotating jig; FIG. 5 is a perspective view of the rotating jig with the light-blocking member and drive unit case removed; FIG. 6 is a plan view of the rotating jig with the light-blocking member and drive unit case removed; FIG. 7 is a perspective view of a light-blocking member; FIG. 8 is a schematic front view of a printer showing a state in which reflected light is transmitted through the side surface of a printing substrate and irradiated onto an ink head; FIG. 9 is a schematic front view of a printer showing the blocking of reflected light by a light-blocking member; FIG. 10 is a front view of a light-blocking member comprising only a first light-blocking portion; FIG. 11 is a front view of a light-blocking member comprising only a second light-blocking portion; FIG. 12 is a front view of a light-blocking member comprising a light-blocking portion that serves as both a first light-blocking portion and a second light-blocking portion; FIG. 13 is a perspective view of a rotating jig comprising a regulating member;

[0009] Hereinafter, an embodiment of a printer according to the present invention will be described with reference to the drawings. It should be noted that the embodiment described here is not intended to limit the present invention in any way. Furthermore, the same reference numerals are used to designate components and parts that perform the same functions, and redundant descriptions will be omitted or simplified as appropriate.

[0010] FIG. 1 is a perspective view of a printer 10 according to an embodiment. FIG. 2 is a perspective view showing the internal structure of the printer 10. FIG. 3 is a plan view showing the internal structure of the printer 10. In the drawings, the symbols F, Rr, L, R, U, and D indicate the front, rear, left, right, top, and bottom of the printer 10, respectively. The symbols X, Y, and Z indicate the sub-scanning direction, main scanning direction, and up-down direction, respectively. Here, the main scanning direction Y is the left-right direction. Here, the sub-scanning direction X is the front-to-back direction. The main scanning direction Y, the sub-scanning direction X, and the up-down direction Z are perpendicular to one another. The sub-scanning direction X is an example of an orthogonal direction perpendicular to the main scanning direction Y. However, these directions are merely defined for convenience of explanation and do not limit the installation manner of the printer 10 in any way.

[0011] The printer 10 according to this embodiment is an inkjet UV printer. However, there are no particular limitations on the printing method of the printer 10. The printer 10 may be, for example, a dot impact printer, a laser printer, or a thermal printer.

[0012] The printer 10 according to this embodiment is capable of printing on the cylindrical surface of a cylindrical substrate 5 (see FIG. 4 ) using a substrate rotation jig 80 (hereinafter simply referred to as the rotation jig 80; see FIG. 4 ), which will be described later. The rotation jig 80 rotates the cylindrical substrate 5 around its axis. The cylindrical substrate 5 also includes a three-dimensional object with an internal space. The type of substrate 5 is not particularly limited, but examples include bottles and cups. The material from which the substrate 5 is formed is also not particularly limited. The substrate 5 may be transparent, allowing light to pass through, or may have a transparent portion that allows light to pass through. The substrate 5 may be made of, for example, glass or clear acrylic. The printer 10 according to this embodiment is also configured to be capable of printing on the surface of substrates 5 of other shapes that do not require rotation.

[0013] As shown in Figure 2, the printer 10 includes a base member 20, a main body case 30 (see Figure 1) attached to the base member 20, a main body frame 35 attached to the base member 20, a plurality of ink heads 40, a light irradiation device 50, a carriage 60 holding the plurality of ink heads 40 and the light irradiation device 50, a carriage moving device 65, a table unit 70, and a table moving device 75.

[0014] 2, the base member 20 includes a bottom wall 21 that forms the bottom surface, an upper left wall 22 located above the left portion of the bottom wall 21, an upper right wall 23 located above the right portion of the bottom wall 21, a left side wall 24 that connects the bottom wall 21 and the upper left wall 22 and extends in the vertical direction Z, and a right side wall 25 that connects the bottom wall 21 and the upper right wall 23 and extends in the vertical direction Z. The portion between the upper left wall 22 and the upper right wall 23 forms a recess 20a that extends in the sub-scanning direction X.

[0015] The base member 20 supports the main body case 30. As shown in Fig. 1, a front cover 31 is provided at the center of the front of the main body case 30. The front cover 31 is configured to be openable and closable relative to the main body case 30. The front cover 31 is provided with a window 31a. The window 31a is formed of, for example, a transparent acrylic plate. An operator can view the inside of the main body case 30 through the window 31a.

[0016] As shown in Figure 2, the main body frame 35 is provided at the rear portion of the base member 20. The main body frame 35 is supported by the upper left wall 22 and the upper right wall 23 of the base member 20. The main body frame 35 extends in the main scanning direction Y and the up-down direction Z. An opening 35a is formed in the center of the main body frame 35 in the main scanning direction Y, and extends in the sub-scanning direction X, allowing the table unit 70 to pass through. The portion of the main body frame 35 above the opening 35a extends in the main scanning direction Y to connect the left and right portions of the opening 35a.

[0017] The carriage moving device 65 moves the carriage 60 in the main scanning direction Y. As shown in FIG. 2 , the carriage moving device 65 includes a guide rail 66, left and right pulleys 67L and 67R, an endless belt 68, and a carriage motor 69. The guide rail 66 is provided above the main frame 35, specifically above the opening 35a. The guide rail 66 is disposed above the table unit 70. The guide rail 66 extends in the main scanning direction Y. The carriage 60 is engaged with the guide rail 66 so as to be slidable in the main scanning direction Y.

[0018] As shown in FIG. 2 , the left pulley 67L is located to the left of the left end of the guide rail 66. The right pulley 67R is located to the right of the right end of the guide rail 66. The left pulley 67L and the right pulley 67R are fixed to the main frame 35. A belt 68 is wound around the left pulley 67L and the right pulley 67R. The belt 68 is fixed to the back surface of the carriage 60. A carriage motor 69 is connected to the right pulley 67R. However, the carriage motor 69 may also be connected to the left pulley 67L. When the carriage motor 69 is driven, the right pulley 67R rotates, and the belt 68 runs between the left pulley 67L and the right pulley 67R. This causes the carriage 60 to move in the main scanning direction Y along the guide rail 66. As the carriage 60 moves in the main scanning direction Y, the ink head 40 and light irradiation device 50 mounted on the carriage 60 also move in the main scanning direction Y. Hereinafter, the right side of the main scanning direction Y will be referred to as the first main scanning direction Y1, and the left side will be referred to as the second main scanning direction Y2. The first main scanning direction Y1 is the direction in which the carriage 60 moves during printing, and the second main scanning direction Y2 is the opposite direction to the first main scanning direction Y1.

[0019] Each of the ink heads 40 ejects ink downward. The ink heads 40 are provided on the underside of the carriage 60. However, the number of ink heads 40 may be one. The ink heads 40 are provided above the table unit 70. Each ink head 40 faces a table 71 of the table unit 70. As shown in FIG. 3 , the ink heads 40 are aligned in the main scanning direction Y. Each ink head 40 is formed so that its length in the sub-scanning direction X is longer than its length in the main scanning direction Y. Each ink head 40 is aligned in the sub-scanning direction X and includes a plurality of nozzles (not shown) that eject ink. In this embodiment, the ink ejected from the nozzles of the ink head 40 is photocurable ink. The photocurable ink is, for example, ultraviolet-curable ink. UV-curable ink has the property of curing when irradiated with ultraviolet light.

[0020] The light irradiation device 50 emits light to harden the ink. The light irradiation device 50 irradiates light (e.g., ultraviolet light) onto photocurable ink (e.g., ultraviolet curable ink) ejected onto the substrate 5, thereby hardening the photocurable ink and fixing it to the substrate 5. As shown in FIG. 3 , the light irradiation device 50 is disposed further in the second main scanning direction Y2 (here, to the left) than the multiple ink heads 40. The light irradiation device 50 is fixed to the left side of the carriage 60. The multiple ink heads 40 are disposed further in the first main scanning direction Y1 (here, to the right) than the light irradiation device 50. The light irradiation device 50 includes a case 51, a light source 52 housed in the case 51 and generating light to harden the ink, and an irradiation port 53 formed on the bottom surface of the case 51. The light irradiation device 50 emits light downward from the irradiation port 53.

[0021] In this embodiment, the light irradiation device 50 is disposed to the left of the ink head 40, but it may also be disposed to the right of the ink head 40. Alternatively, the light irradiation device 50 may be provided on both the left and right of the ink head 40.

[0022] The table unit 70 supports the substrate 5 directly or via a rotating jig 80. The table unit 70 includes a table 71 on which the substrate 5 or the rotating jig 80 is placed, and a table carriage 72 that supports the table 71 so that it can move in the vertical direction Z. The table 71 is formed in a rectangular shape with a length in the sub-scanning direction X that is shorter than the length in the main scanning direction Y. However, the length of the table 71 in the sub-scanning direction X may be longer than the length in the main scanning direction Y, or the lengths in the sub-scanning direction X and the main scanning direction Y may be the same. When printing on a substrate 5 that does not require rotation (such a substrate 5 is illustrated in FIGS. 1 and 2), the substrate 5 is placed on the table 71. When printing on a cylindrical substrate 5, a rotating jig 80 (see FIG. 4) with the substrate 5 placed on it is placed on the table 71.

[0023] 2, the table 71 is disposed below the upper end of the opening 35a of the main body frame 35. The table 71 is disposed below the ink head 40 and the light irradiation device 50. The table 71 is provided at the upper end of a table carriage 72. The table carriage 72 is configured to be able to move the table 71 in the up-down direction Z by an elevator device (not shown).

[0024] The table moving device 75 moves the table unit 70 in the sub-scanning direction X. As shown in FIG. 3 , the table moving device 75 includes a pair of left and right slide rails 76L and 76R, a pair of front and rear pulleys 77F and 77Rr, an endless belt 78, and a drive motor 79. The left slide rail 76L and the right slide rail 76R are provided on the left side wall 24 and the right side wall 25 of the base member 20, respectively. The left slide rail 76L and the right slide rail 76R extend in the sub-scanning direction X. The table unit 70 is configured to be movable in the sub-scanning direction X along the left slide rail 76L and the right slide rail 76R.

[0025] As shown in FIG. 3 , the front pulley 77F is provided in the front portion of the bottom wall 21 of the base member 20. The rear pulley 77Rr is provided in the rear portion of the bottom wall 21. A belt 78 is wound around the front pulley 77F and the rear pulley 77Rr. A drive motor 79 is connected to the rear pulley 77Rr. However, the drive motor 79 may be connected to the front pulley 77F. When the drive motor 79 is driven, the rear pulley 77Rr rotates, and the belt 78 runs between the front pulley 77F and the rear pulley 77Rr. The table carriage 72 (see also FIG. 2 ) is attached to the belt 78. Therefore, when the belt 78 runs due to the drive of the drive motor 79, the table unit 70 moves in the sub-scanning direction X along the left and right slide rails 76L and 76R.

[0026] [Configuration of Printing Substrate Rotation Jig] The configuration of the rotation jig 80 will be described below. The rotation jig 80 is placed below the carriage 60, in this case on the table 71, and supports and rotates the cylindrical printing substrate 5. The rotation jig 80 is configured to be detachable from the table 71. The rotation jig 80 is fixed to the table 71 when printing on a cylindrical printing substrate 5, and is detached from the table 71 when printing on a printing substrate 5 that does not need to be rotated. The rotation jig 80 moves in the sub-scanning direction X and the up-down direction Z together with the table 71.

[0027] FIG. 4 is a perspective view of the rotating jig 80. FIG. 5 is a front view of the rotating jig 80. FIG. 6 is a plan view of the rotating jig 80. As shown in FIGS. 4 to 6, the rotating jig 80 includes a frame member 90, a first rotating member 100, a second rotating member 110, a drive unit 120 (see FIG. 7), a drive unit case 130 that covers the drive unit 120, and a light-shielding member 140. FIG. 7 is a perspective view of the rotating jig 80 with the light-shielding member 140 and the drive unit case 130 removed so that the drive unit 120 can be seen. FIG. 8 is a plan view of the rotating jig 80 with the light-shielding member 140 and the drive unit case 130 removed.

[0028] As shown in FIG. 4 , the frame member 90 supports the first rotating member 100 and the second rotating member 110 so as to be rotatable in the front-rear direction. The frame member 90 is placed on the table 71 and fixed to the table 71. The frame member 90 is configured in a generally rectangular box shape with a portion of its top surface open. The frame member 90 has a bottom surface 91D, a front surface 91F extending upward from the front end of the bottom surface 91D, a left surface 91L extending upward from the left end of the bottom surface 91D, a right surface 91R extending upward from the right end of the bottom surface 91D, a rear surface 91Rr (see FIG. 6 ) extending upward from the rear end of the bottom surface 91D and connecting the rear ends of the left surface 91L and the right surface 91R, and a top surface 91U extending forward from the upper end of the rear surface 91Rr and connecting a portion of the left surface 91L and a portion of the right surface 91R. The front surface 91F is located forward of the first rotating member 100 and the second rotating member 110. The frame member 90 has an opening 92 in front of the top surface 91U. The top surface 91U is located rearward of the first rotating member 100. The opening 92 leaves the first rotating member 100 and the second rotating member 110 open above. The top surface 91U is located higher than the first rotating member 100 and the second rotating member 110. However, the shape of the frame member 90 is not particularly limited. The frame member 90 may have, for example, only a left surface 91L and a right surface 91R.

[0029] The first rotating member 100 supports the printing substrate 5 together with the second rotating member 110. The first rotating member 100 includes a first shaft 101 extending in the main scanning direction Y and a plurality of first rollers 102 inserted through the first shaft 101. The first shaft 101 is configured to be rotatable about an axis extending in the main scanning direction Y. A left end of the first shaft 101 is rotatably supported on a left surface 91L of the frame member 90. A right end of the first shaft 101 is rotatably supported on a right surface 91R of the frame member 90. The first shaft 101 is exposed to the outside through an opening 92 in the frame member 90.

[0030] The first roller 102 is an anti-slip member that prevents the printing substrate 5 from slipping on the rotating first shaft 101. The first roller 102 is configured to be slidable and fixed in the main scanning direction Y relative to the first shaft 101. The position of the first roller 102 in the main scanning direction Y is changeable. The first rotating member 100 supports the printing substrate 5 with at least some of the first rollers 102 out of the multiple first rollers 102. Note that the first rotating member 100 does not need to be equipped with the first rollers 102, in which case the printing substrate 5 may be supported by the first shaft 101.

[0031] The second rotating member 110 supports the printing substrate 5 together with the first rotating member 100. The second rotating member 110 is arranged alongside the first rotating member 100 in the sub-scanning direction X. Here, the second rotating member 110 is arranged forward of the first rotating member 100. The second rotating member 110 includes a second shaft 111 extending in the main scanning direction Y and a plurality of second rollers 112 inserted through the second shaft 111. The second shaft 111 is configured to be rotatable around an axis extending in the main scanning direction Y. The left end of the second shaft 111 is rotatably supported on the left surface 91L of the frame member 90. The right end of the second shaft 111 is rotatably supported on the right surface 91R of the frame member 90. The second shaft 111 is exposed to the outside through an opening 92 in the frame member 90.

[0032] The second roller 112 is an anti-slip member that prevents the printing substrate 5 from slipping on the rotating second shaft 111. The second roller 112 is configured to be slidable and fixed in the main scanning direction Y relative to the second shaft 111. The position of the second roller 112 in the main scanning direction Y is changeable. The second rotating member 110 supports the printing substrate 5 with at least some of the second rollers 112 out of the multiple second rollers 112. Note that the second rotating member 110 does not need to be equipped with the second rollers 112, in which case the printing substrate 5 may be supported by the second shaft 111.

[0033] The first roller 102 and the second roller 112 are used while being disposed at the same position in the main scanning direction Y. As shown in Fig. 4, in this embodiment, the diameter of the first roller 102 is larger than the diameter of the second roller 112. The center of the first shaft 101 is located below the center of the second shaft 111. As a result, the position of the upper end of the first roller 102 provided on the first shaft 101 is the same as the position of the upper end of the second roller 112 provided on the second shaft 111.

[0034] As shown in FIG. 7 , the drive unit 120 is provided on the frame member 90. The drive unit 120 is configured to rotate the first shaft 101 and the second shaft 111. The drive unit 120 rotates the printing substrate 5 by rotating the first shaft 101 and the second shaft 111. As shown in FIG. 8 , the drive unit 120 includes a drive motor 121, a first gear 122 connected to the drive motor 121, a second gear 123a meshing with the first gear 122, a third gear 123b formed integrally with the second gear 123a, a fourth gear 124a meshing with the third gear 123b, a support shaft 124b formed integrally with the fourth gear 124a, a first idler pulley 125, a second idler pulley 126, and a belt 127. The drive motor 121 is housed within the frame member 90. The drive motor 121 is disposed rearward of the first shaft 101. The first gear 122 is fixed to the rotation shaft of the drive motor 121. The first gear 122 is located outside the frame member 90. The first gear 122 is located to the right of the right surface 91R of the frame member 90. The second gear 123a and the third gear 123b are provided on a rotation shaft 123c extending rightward from the right surface 91R of the frame member 90. The fourth gear 124a is provided on a support shaft 124b extending rightward from the right surface 91R of the frame member 90. The first idler pulley 125 and the second idler pulley 126 extend rightward from the right surface 91R of the frame member 90. The first shaft 101 is located between the support shaft 124b and the first idler pulley 125. The second shaft 111 is located between the first idler pulley 125 and the second idler pulley 126. The belt 127 is wound around the support shaft 124b, the right end 101R of the first shaft 101, the first idler pulley 125, the right end 111R of the second shaft 111, and the second idler pulley 126.

[0035] When the drive motor 121 is driven, the belt 127 runs via the first gear 122 to the fourth gear 124a and the support shaft 124b. This rotates the first shaft 101 and the second shaft 111 around which the belt 127 is wound. As a result, the printing substrate 5 supported by the first shaft 101 and the second shaft 111 rotates, for example, in the direction of arrow R in FIG. 7 . In this embodiment, the diameter of the first roller 102 is larger than the diameter of the second roller 112, which is disposed forward of the first roller 102. Therefore, the printing substrate 5 contacts the second roller 112 and then the first roller 102, rotating forward. In other words, by rotating the first shaft 101 and the second shaft 111, the printing substrate 5 rotates in the direction of arrow R in FIG. 7 (counterclockwise when viewed from right to left).

[0036] The drive unit case 130 covers the drive unit 120. As shown in FIG. 4 , the drive unit case 130 has a front surface 131F, a right side surface 131R, a rear surface 131Rr, and an upper surface 131U. The front surface 131F is disposed forward of the drive unit 120. The front surface 131F extends in the primary scanning direction Y and the vertical direction Z. The front surface 131F abuts against the right surface 91R of the frame member 90. The rear surface 131Rr is disposed rearward of the drive unit 120. The rear surface 131Rr extends in the primary scanning direction Y and the vertical direction Z. The rear surface 131Rr also abuts against the right surface 91R of the frame member 90. The right side surface 131R connects the front surface 131F and the rear surface 131Rr. The front end of the right side surface 131R is connected to the right end of the front surface 131F. The rear end of the right side surface 131R is connected to the right end of the rear surface 131Rr. The right side surface 131R extends in the sub-scanning direction X and the up-down direction Z. The top surface 131U is connected to the upper ends of the front surface 131F, the rear surface 131Rr, and the right side surface 131R. The top surface 131U extends in the main scanning direction Y and the sub-scanning direction X.

[0037] The light blocking member 140 is attached to the drive unit case 130. The frame member 90 and the drive unit case 130 rotatably support the first rotating member 100 and the second rotating member 110 and are an example of a support member to which the light blocking member 140 is attached. The light blocking member 140 has screws 142 that are fastened to the drive unit case 130. A screw hole 132 (see FIG. 6 ) into which the screw 142 is fastened is formed in a front surface 131F of the drive unit case 130. The front surface 131F of the drive unit case 130 extends in the up-down direction Z and is an example of an attachment surface in which the screw hole 132 into which the screw 142 that fixes the light blocking member 140 is fastened is formed. However, the attachment surface is not limited to the surface of the drive unit case 130 or to a surface facing forward.

[0038] One surface of the light blocking member 140 (a first light blocking portion 141R, which will be described later) is in contact with the right side surface 131R of the drive unit case 130. The right side surface 131R of the drive unit case 130 intersects with the mounting surface (the front surface 131F in this example) and is an example of an abutment surface against which the light blocking member 140 is in contact. In this example, the front surface 131F as the mounting surface and the right side surface 131R as the abutment surface are orthogonal to each other. The abutment surface is not limited to a surface of the drive unit case 130, nor is it limited to a surface facing right.

[0039] When the printing substrate 5 is transparent or includes a transparent portion, the light blocking member 140 blocks light that passes through the right side surface (side surface in the first main scanning direction Y1) 5R (see FIG. 5) of the printing substrate 5 and travels toward the ink head 40 (see FIG. 2). As shown in FIG. 5, the light blocking member 140 is disposed so as to face the right side surface 5R of the printing substrate 5 when it is supported by the first rotating member 100 and the second rotating member 110.

[0040] FIG. 9 is a perspective view of the light blocking member 140. As shown in FIG. 9, the light blocking member 140 includes a first light blocking portion 141R, a second light blocking portion 141U, and a fixed plate 141F. The fixed plate 141F forms the front wall of the light blocking member 140. As shown in FIG. 4, the fixed plate 141F extends in the main scanning direction Y and the up-down direction Z. The fixed plate 141F intersects with the first light blocking portion 141R. In this example, the fixed plate 141F is perpendicular to the first light blocking portion 141R. The fixed plate 141F is abutted against the mounting surface (here, the front surface 131F) of the drive unit case 130. This determines the position of the light blocking member 140 in the sub-scanning direction X. The fixed plate 141F has an elongated hole 143 extending in the up-down direction Z. The screws 142 are inserted into the elongated holes 143 of the fixing plate 141F and fastened to the screw holes 132 formed in the front surface 131F of the drive unit case 130. When the screws 142 are not fastened tightly, the elongated holes 143 allow the light blocking member 140 to move in the vertical direction Z. When the screws 142 are fastened, the light blocking member 140 is fixed to the drive unit case 130.

[0041] As shown in Figure 9, a portion of the lower part of the fixed plate 141F is cut out. The width of the lower part of the fixed plate 141F in the main scanning direction Y is narrower than that of the upper part. The fixed plate 141F is formed with an inclined part 141c that extends obliquely to connect the narrow part 141a and the wide part 141b. The narrow part 141a is the lower right part of the fixed plate 141F, and the inclined part 141c is inclined downward toward the right.

[0042] The first light-shielding portion 141R forms the right wall of the light-shielding member 140. The first light-shielding portion 141R extends in the sub-scanning direction X and the up-down direction Z. As shown in FIG. 5 , when the fixed plate 141F is attached to the drive unit case 130, the first light-shielding portion 141R faces the side surface 5R in the first main scanning direction Y1 of the printing substrate 5 supported by the first rotating member 100 and the second rotating member 110. As shown in FIG. 5 , the first light-shielding portion 141R is provided above the frame member 90. Here, the first light-shielding portion 141R partially overlaps with the frame member 90 in the up-down direction Z, with its upper end located above the frame member 90.

[0043] As shown in FIG. 6 , the first light-shielding portion 141R extends from in front of the second rotating member 110 to behind the first rotating member 100. The length of the first light-shielding portion 141R in the sub-scanning direction X is set to be longer than the diameter of the largest printable substrate 5. Therefore, the first light-shielding portion 141R extends from in front of the front end of the largest printable substrate 5 to behind the rear end of the substrate 5. The first light-shielding portion 141R abuts against the abutment surface (right side surface 131R) of the drive unit case 130. This determines the position of the light-shielding member 140 in the main scanning direction Y. The first light-shielding portion 141R (particularly its lower portion) is an example of an abutment plate that abuts against the abutment surface (right side surface 131R) of the drive unit case 130.

[0044] The second light-shielding portion 141U forms the upper wall of the light-shielding member 140. The second light-shielding portion 141U extends in the main scanning direction Y and the sub-scanning direction X. The length of the second light-shielding portion 141U in the sub-scanning direction X is approximately equal to that of the first light-shielding portion 141R. Therefore, the second light-shielding portion 141U also extends from in front of the front end of the largest printable diameter printing substrate 5 to behind the rear end of the largest diameter printing substrate 5.

[0045] As shown in FIG. 6 , the end (left end) of the second light-shielding portion 141U in the second main scanning direction Y2 is located slightly further in the second main scanning direction Y2 (to the left) than the end (right end) of the frame member 90 in the first main scanning direction Y1. The second light-shielding portion 141U overlaps the frame member 90 in a plan view. However, with respect to the main scanning direction Y, the end of the second light-shielding portion 141U in the second main scanning direction Y2 may be located at the same position as the end of the frame member 90 in the first main scanning direction Y1. The second light-shielding portion 141U does not overlap the printing substrate 5 with the largest printable diameter in a plan view, but is configured to be aligned with the printing substrate 5 in the main scanning direction Y with a predetermined gap. However, since a wall higher than the ink head is effective against light incident on the nozzle surface from the side of the transparent workpiece, the second light-shielding portion 141U may overlap the printing substrate 5 in a plan view if there is no risk of interference with the ink head 40. In this case, a predetermined gap is secured between the upper surface of the printing substrate 5 and the lower surface of the second light-shielding portion 141U. Note that the predetermined gap is the minimum gap that does not cause interference between the printing substrate 5 and the second light-shielding portion 141U when the printing substrate 5 is rotated.

[0046] 5, the second light-shielding portion 141U is disposed at the highest position in the vertical direction Z of the rotating jig 80. The light-shielding member 140 is configured so that no components (e.g., screw heads) protrude above the second light-shielding portion 141U.

[0047] The light-shielding member 140 is configured to be able to change its vertical position relative to the frame member 90 and the drive unit case 130. Here, the light-shielding member 140 is configured to be able to change its position in the vertical direction Z from a height lower than the smallest diameter substrate 5 to the same height as the largest diameter substrate 5. Here, the light-shielding member 140 is configured to be able to change its position in the vertical direction Z from a height lower than the smallest diameter substrate 5 to a height higher than the largest diameter substrate 5. The long hole 143 has a length sufficient to allow the position of the second light-shielding portion 141U to be changed from a position lower than the smallest diameter substrate 5 to a position higher than the largest diameter substrate 5, and is positioned in a position that allows this change. The position of the light-shielding member 140 in the vertical direction Z is adjusted by the user. In the case of the largest diameter substrate 5, the position of the light-shielding member 140 in the vertical direction Z is adjusted to a position slightly lower than the substrate 5. However, if the diameter of the printing substrate 5 is not so large, the position of the light blocking member 140 in the up-down direction Z may be adjusted to a position higher than the printing substrate 5. The position of the printing substrate 5 in the main scanning direction Y is adjusted by the user to a position where there is a distance between the printing substrate 5 and the light blocking member 140 that is equal to or greater than the predetermined distance described above, and where the printing substrate 5 is as close as possible to the light blocking member 140 (here, for example, a position where the distance between the two is within 5 mm).

[0048] As shown in FIG. 9 , the light blocking member 140 includes a pair of magnets 144F and 144Rr provided on the first light blocking portion 141R. The front magnet 144F is attached to the front portion of the inner surface (left surface) of the first light blocking portion 141R. The rear magnet 144Rr is attached to the rear portion of the inner surface (left surface) of the first light blocking portion 141R. Both magnets 144F and 144Rr extend from the bottom end to the center of the first light blocking portion 141R in the vertical direction Z. Each of the magnets 144F and 144Rr has a strip-like shape that is longer in the vertical direction Z than in the sub-scanning direction X.

[0049] As shown in FIG. 4 , the contact surface (right side surface 131R) of the drive unit case 130 includes an attracting portion 133 that includes a magnetic metal and to which the magnets 144F and 144Rr are attracted. In this embodiment, the right side surface 131R of the drive unit case 130 is made of a magnetic metal, such as iron. However, the drive unit case 130 may also include a magnetic metal fixed to the inner surface of the right side surface 131R, for example. The magnets 144F and 144Rr are attracted to the attracting portion 133 (here, the right side surface 131R) of the drive unit case 130. The magnets 144F and 144Rr prevent the light blocking member 140 from dropping downward during the operation of changing the position of the light blocking member 140 in the up-down direction Z, thereby facilitating the change operation.

[0050] When the light blocking member 140 is lowered to its lowest position, the upper ends of the magnets 144F and 144Rr are located near the upper end of the drive unit case 130. Even if the magnets 144F and 144Rr extend above their upper ends, that portion cannot be used for attraction. The upper end positions of the magnets 144F and 144Rr are set to the lowest necessary position. Furthermore, because the magnets 144F and 144Rr extend up to the vicinity of the lower end of the first light blocking unit 141R, the attraction force can be used even when the light blocking member 140 is moved upward.

[0051] [Light-blocking effect of light-blocking member] The light-blocking effect of the light-blocking member 140 will be described below. The light-blocking member 140 exhibits a light-blocking effect when the printing substrate 5 is transparent or has a transparent portion (hereinafter, simply referred to as "transparent") . FIG. 10 is a schematic front view of the printer 10, showing how reflected light that passes through the transparent printing substrate 5 and is reflected off the bottom surface 91D of the frame member 90, etc., passes through the side surface 5R of the printing substrate 5, and enters the ink head 40. FIG. 10 is a diagram showing a case where the light-blocking member 140 is not provided (a conventional case). FIG. 11 is a schematic front view of the printer 10, showing how the light-blocking member 140 prevents reflected light from entering the ink head 40. 10, the printer 10 according to this embodiment has a light irradiation device 50 disposed further to the second main scanning direction Y2 (here, to the left) than the ink head 40, and performs printing when the carriage 60 moves in the first main scanning direction Y1 (here, to the right). When the carriage 60 is moving in the first main scanning direction Y1 (here, to the right), ink is ejected with the light irradiation device 50 turned on, and the ink that has landed on the printing substrate 5 is irradiated with light from the light irradiation device 50 and hardened.

[0052] 10 , if the light-shielding member 140 were not provided in this printing process, a portion L1 of the light emitted from the light irradiation device 50 would pass through the printing substrate 5, be reflected by a member below the printing substrate 5 (such as the bottom surface 91D of the frame member 90), and then pass through the right side surface 5R of the printing substrate 5 to be incident on the ink head 40 (the reflected light is represented by the symbol L2). When the reflected light L2 of the light L1 from the light irradiation device 50 reaches the ink head 40, the ink in the ink head 40 would thicken, which could cause problems with the ink head 40.

[0053] On the other hand, when the light-blocking member 140 is provided as in this embodiment, it is possible to prevent the reflected light L2 of the light L1 from the light irradiation device 50 from reaching the ink head 40. As shown in FIG. 11 , the reflected light L2 of the light L1 emitted from the light irradiation device 50 passes through the side surface 5R of the printing substrate 5 in the first main scanning direction Y1 and heads toward the ink head 40, as in the conventional case. However, with the printer 10 according to this embodiment, as shown in FIG. 11 , the reflected light L2 can be blocked by the light-blocking member 140. This reduces the risk of the ink in the ink head 40 becoming thicker due to the incidence of light, causing problems with the ink head 40.

[0054] [Operations and Effects of the Embodiment] Hereinafter, operations and effects that can be achieved by the rotating jig 80 according to the present embodiment will be described.

[0055] The rotation jig 80 according to this embodiment is a printing substrate rotation jig that is placed below the carriage 60 in a printer 10 that includes an ink head 40 that ejects ink, a light irradiation device 50 that irradiates light to cure the ink, a carriage 60 that holds the ink head 40 and the light irradiation device 50, and a carriage movement device 65 that moves the carriage 60 in a predetermined main scanning direction Y. The ink head 40 is disposed in a first main scanning direction Y1, which is one side of the main scanning direction Y, relative to the light irradiation device 50. The rotation jig 80 includes a first rotation member 100 that is rotatable about an axis extending in the main scanning direction Y, a second rotation member 110 that is rotatable about an axis extending in the main scanning direction Y, a frame member 90 that serves as a support member that rotatably supports the first rotation member 100 and the second rotation member 110, and a light blocking member 140. The light-shielding member 140 has a first light-shielding portion 141R that faces the side surface 5R in the first main scanning direction Y1 of the printing substrate 5 supported by the first rotating member 100 and the second rotating member 110 and extends in the sub-scanning direction X.

[0056] According to the rotating jig 80, the first light-shielding portion 141R is provided so as to face the side surface 5R in the first main scanning direction Y1 of the printing substrate 5 supported by the rotating jig 80 and extends in the sub-scanning direction X, thereby blocking the reflected light L2 that passes through the side surface 5R in the first main scanning direction Y1 of the printing substrate 5. This makes it possible to reduce the amount of reflected light that reaches the ink head 40.

[0057] In this embodiment, the light-shielding member 140 has a second light-shielding portion 141U that extends in the sub-scanning direction X and the main scanning direction Y. This rotating jig 80 can prevent the reflected light L2 that has passed through the side surface 5R of the printing substrate 5 in the first main scanning direction Y1 from traveling upward. The ink head 40 is located above the printing substrate 5. Therefore, by preventing the reflected light L2 that has passed through the side surface 5R of the printing substrate 5 in the first main scanning direction Y1 from traveling upward, the reflected light L2 can be prevented from reaching the ink head 40.

[0058] In this embodiment, the light blocking member 140 is configured so that its vertical position can be changed relative to the frame member 90 serving as a support member and the drive unit case 130. With this configuration, the vertical position of the light blocking member 140 can be changed, and therefore it is possible to block reflected light L2 that has passed through the side surface 5R of the printing substrate 5 in accordance with printing substrates 5 of various diameters.

[0059] In this embodiment, the second light-shielding portion 141U, which extends in the sub-scanning direction X and the main scanning direction Y, is positioned at the highest position in the vertical direction Z on the rotating jig 80. With this configuration, when attempting to set the height of the light-shielding member 140 as high as possible (preferably lower than the printing substrate 5 and as close to the printing substrate 5 as possible), the second light-shielding portion 141U can be positioned at the highest possible position. This allows for a greater amount of reflected light L2 to be blocked. If the second light-shielding portion 141U is not positioned at the highest position in the vertical direction Z on the rotating jig 80, it is necessary to adjust the position of the light-shielding member 140 so that a member protruding beyond the second light-shielding portion 141U is positioned at the top. In this case, the position of the second light-shielding portion 141U in the vertical direction Z will be lower than in this embodiment.

[0060] In this embodiment, the drive unit case 130, which serves as a part of the support member, includes an attachment surface (here, the front surface 131F of the drive unit case 130) that extends in the vertical direction Z and has screw holes 132 formed therein. The light blocking member 140 includes a fixing plate 141F that has elongated holes 143 that extend in the vertical direction Z and that is abutted against the attachment surface (the front surface 131F of the drive unit case 130), and screws 142 that are inserted through the elongated holes 143 of the fixing plate 141F and fastened to the screw holes 132 in the attachment surface (the front surface 131F of the drive unit case 130). With this configuration, the position of the light blocking member 140 in the vertical direction Z can be changed using the elongated holes 143, and then the light blocking member 140 can be fixed by tightening the screws 142.

[0061] In this embodiment, the drive unit case 130 further includes an abutment surface (right side surface 131R) that intersects with the mounting surface (front surface 131F). The light blocking member 140 includes an abutment plate (here, first light blocking portion 141R) that intersects with the fixed plate 141F and abuts against the abutment surface (right side surface 131R of the drive unit case 130). With this configuration, the fixed plate 141F and the abutment plate (first light blocking portion 141R) can determine the position of the light blocking member 140 in the sub-scanning direction X and the main scanning direction Y. Furthermore, the abutment plate (first light blocking portion 141R) can determine the rotational position of the light blocking member 140 around the screw 142.

[0062] In this embodiment, the contact surface (right side surface 131R of drive unit case 130) is provided with an attached portion 133 including magnetic metal. Light blocking member 140 includes magnets 144F and 144Rr provided on the contact plate (first light blocking portion 141R). With this configuration, magnets 144F and 144Rr are attracted to attached portion 133, thereby preventing light blocking member 140 from dropping downward during the operation of changing the position of light blocking member 140 in the up-down direction Z, and facilitating the change operation. Alternatively, magnetic metal may be provided on light blocking member 140, and magnets may be provided on the surface of the support member against which light blocking member 140 contacts.

[0063] Other Embodiments The above describes several preferred embodiments of the present invention. However, the above-described embodiments are merely illustrative, and the technology disclosed herein can be embodied in various other forms. For example, in the above-described embodiment, the light-blocking member 140 is provided only on the first roller 102 and the second roller 112 in the first main scanning direction Y1 (the direction of the ink head 40 as viewed from the light irradiation device 50). However, the light-blocking member 140 may also be provided on the second main scanning direction Y2 (the opposite direction to the first main scanning direction Y1) side of the first roller 102 and the second roller 112. Such other light-blocking members can block reflected light that passes through the side surface of the printing substrate 5 in the second main scanning direction Y2. This is preferable for the printer 10 because it reduces reflected light that diffuses within the main case 30. When the light irradiation device 50 is provided in the first main scanning direction Y1 and the second main scanning direction Y2, respectively, further from the ink head 40, the other light-shielding member can also prevent reflected light that passes through the side of the printing substrate 5 in the second main scanning direction Y2 from reaching the ink head 40.

[0064] In the above-described embodiment, the light-shielding member 140 includes both the first light-shielding portion 141R extending in the sub-scanning direction X and the up-down direction Z and the second light-shielding portion 141U extending in the sub-scanning direction X and the main scanning direction Y. However, the light-shielding member 140 does not necessarily include both the first light-shielding portion 141R and the second light-shielding portion 141U. FIG. 12 is a front view showing a light-shielding member 140 including only the first light-shielding portion 141R. As shown in FIG. 12, the first light-shielding portion 141R alone can block to some extent the reflected light L2 that has passed through the side surface 5R of the printing substrate 5 in the first main scanning direction Y1. If the first light-shielding portion 141R is positioned close to the side surface 5R of the printing substrate 5 in the first main scanning direction Y1, the first light-shielding portion 141R alone can almost completely block the reflected light L2 that has passed through the side surface 5R of the printing substrate 5 in the first main scanning direction Y1.

[0065] 13 is a front view showing a light-shielding member 140 including only the second light-shielding portion 141U. As shown in FIG. 13, the second light-shielding portion 141U alone can block to some extent the reflected light L2 that has passed through the side surface 5R of the printing substrate 5 in the first main scanning direction Y1. By arranging the second light-shielding portion 141U in a position close to the side surface 5R of the printing substrate 5 in the first main scanning direction Y1 and increasing the length of the second light-shielding portion 141U in the main scanning direction Y to some extent, it is also possible to block almost all of the reflected light L2 that has passed through the side surface 5R of the printing substrate 5 in the first main scanning direction Y1 using only the second light-shielding portion 141U.

[0066] 14 is a front view showing a light-shielding member 140 including a light-shielding portion 141 that functions as both a first light-shielding portion and a second light-shielding portion. As shown in FIG. 14, the light-shielding portion 141 extends at a downward incline toward the first main scanning direction Y1. The light-shielding portion 141 can function as both a first light-shielding portion extending in the sub-scanning direction X and the up-down direction Z, and a second light-shielding portion extending in the sub-scanning direction X and the main scanning direction Y.

[0067] In the above-described embodiment, the first rotating member 100 and the second rotating member 110 of the rotating jig 80 are rotated by the driving unit 120. However, the first rotating member 100 and the second rotating member 110 of the rotating jig 80 may be rotated together with the movement of the table 71, for example, by a mechanism such as that described in Patent Document 1. The configuration of the rotating jig 80 is not particularly limited.

[0068] For example, the rotating jig 80 may include a regulating member that, together with the light-shielding member 140, regulates movement of the printing substrate 5 in the main scanning direction Y. FIG. 15 is a perspective view of the rotating jig 80 including a regulating member 150. As shown in FIG. 15 , the regulating member 150 includes an attachment portion 151 attached to the upper surface 91U of the frame member 90, and a regulating portion 152 that regulates movement of the printing substrate 5 in the main scanning direction Y. The regulating member 150 is configured in a flat plate shape extending in the main scanning direction Y and the sub-scanning direction X. The attachment portion 151 is placed on the upper surface 91U of the frame member 90. The regulating portion 152 protrudes forward beyond the attachment portion 151 and is disposed above the first rotating member 100 and the second rotating member 110. An end portion 152R of the regulating portion 152 in the first main scanning direction Y1 is positioned in the second main scanning direction Y2 further than the end portion of the attachment portion 151 in the first main scanning direction Y1. The width of the regulating portion 152 in the main scanning direction Y is shorter than that of the attachment portion 151. An end portion 152R of the regulating portion 152 in the first main scanning direction Y1 is formed in a straight line extending in the sub-scanning direction X. However, the shape of the regulating member 150 is not limited to this.

[0069] The front end of the mounting portion 151 is bent in an L-shape so as to sandwich the front end of the upper surface 91U of the frame member 90 from above and below. The rear end of the mounting portion 151 is bent downward and contacts the rear surface 91Rr of the frame member 90 from behind. Due to the configuration of the mounting portion 151, the regulating member 150 is slidable in the main scanning direction Y.

[0070] As shown in FIG. 15 , when printing on the printing substrate 5, the user positions the printing substrate 5 so that the side surface 5R (see FIG. 5 ) in the first main scanning direction Y1 abuts or is very close to the end of the second light-shielding portion 141U of the light-shielding member 140 in the second main scanning direction Y2. The user positions the regulating member 150 so that the end 152R in the first main scanning direction Y1 of the regulating portion 152 abuts or is very close to the side surface 5L in the second main scanning direction Y2 of the printing substrate 5. This restricts movement of the printing substrate 5 in the main scanning direction Y. If the cross section of the printing substrate 5 is not circular but distorted, or if the rotation axis of the printing substrate 5 is offset from the main scanning direction Y, rotating the printing substrate 5 with the rotation jig 80 may cause the printing substrate 5 to move in the first main scanning direction Y1 or the second main scanning direction Y2. The regulating member 150 can regulate the movement of the printing substrate 5 in the second main scanning direction Y2. The light blocking member 140 regulates the movement of the printing substrate 5 in the main scanning direction Y1.

[0071] The configuration of the printer 10 is not particularly limited, as long as the printer 10 includes an ink head 40 that ejects ink, a light irradiation device 50 that irradiates light to harden the ink, a carriage 60 that holds the ink head 40 and the light irradiation device 50, a carriage moving device 65 that moves the carriage 60 in the main scanning direction Y, and a printing substrate rotating jig 80. For example, the printer 10 may be a dedicated printer that prints on a cylindrical printing substrate 5, and may not include the table unit 70 or the table moving device 75.

[0072] Unless otherwise specified, the embodiments do not limit the present invention.

[0073] 5 Printing substrate 10 Printer 40 Ink head 50 Light irradiation device 60 Carriage 65 Carriage moving device (moving device) 80 Printing substrate rotating jig 90 Frame member (supporting member) 100 First rotating member 110 Second rotating member 130 Drive unit case (supporting member) 131F Front surface (mounting surface) 131R Right side surface (contact surface) 132 Screw hole 133 Adsorbed portion 140 Light blocking member 141F Fixing plate 141R First light blocking portion (contact plate) 141U Second light blocking portion 142 Screw 143 Elongated hole 144F Magnet 144Rr Magnet

Claims

1. A printer comprising an ink head that discharges ink, a light irradiation device that irradiates light for curing the ink, a carriage that holds the ink head and the light irradiation device, and a moving device that moves the carriage in a predetermined scanning direction, wherein there is provided a printed material rotating jig that is placed below the carriage and supports and rotates a cylindrical printed material, the ink head is arranged in a first scanning direction which is one of the scanning directions, rather than the light irradiation device, a first rotating member rotatable around an axis extending in the scanning direction, a second rotating member rotatable around an axis extending in the scanning direction, a support member that rotatably supports the first rotating member and the second rotating member, and a light shielding member that is supported by the first rotating member and the second rotating member, faces a side surface of the printed material in the first scanning direction, and has a first light shielding portion extending in an orthogonal direction orthogonal to the scanning direction. Printed material rotating jig.

2. The printed material rotating jig according to claim 1, wherein the light shielding member has a second light shielding portion extending in the orthogonal direction and the scanning direction.

3. The printed material rotating jig according to claim 1, wherein the light shielding member is configured to be able to change its vertical position with respect to the support member.

4. The printed material rotating jig according to claim 3, wherein the light shielding member has a second light shielding portion extending in the orthogonal direction and the scanning direction, and the second light shielding portion is arranged at the highest vertical position among the printed material rotating jigs.

5. The printed material rotating jig according to claim 4, wherein the light shielding member is attached to the support member, the support member has an adsorbed portion containing a magnetic metal or a magnet, and the light shielding member has a magnet or a magnetic metal that adsorbs to the adsorbed portion.

6. The support member has an attachment surface that extends in the vertical direction and has a screw hole formed therein. The light shielding member includes a fixing plate that has a long hole formed therein and extends in the vertical direction and is applied to the attachment surface, and a screw that is inserted into the long hole of the fixing plate and fastened to the screw hole of the attachment surface. The printed material rotating jig according to claim 3.

7. The support member further has an abutting surface that intersects the attachment surface, and the light shielding member has an abutting plate that intersects the fixing plate and is applied to the abutting surface. The printed material rotating jig according to claim 6.

8. The application surface is provided with an adsorbed portion containing a ferromagnetic metal or a magnet, and the light shielding member includes a magnet or a ferromagnetic metal provided on the application plate and adsorbing to the adsorbed portion. The printed object rotating jig according to claim 7.

9. An ink head for discharging ink, a light irradiation device for irradiating light for curing the ink, a carriage holding the ink head and the light irradiation device, a moving device for moving the carriage in a predetermined scanning direction, and a printed object rotating jig according to any one of claims 1 to 8. A printer comprising the same.

Images