Shooting assembly and printing system

Abstract

The utility model provides an imaging assembly and a printing system, which can realize position adjustment of an imaging unit in three directions crossing each other. An imaging unit (100) is provided in a printing device (P) for printing on a medium, and is used for imaging the medium. The imaging unit (1) includes a camera (6) for imaging; comprising a first bracket (10), a second bracket (20) and a third bracket (30); and a cross beam (50) that holds the imaging unit via the carriage assembly, the cross beam holding a first carriage, the first carriage being movable relative to the cross beam in a first direction (D1), the first carriage holding a second carriage, the second carriage being movable relative to the first carriage in a second direction (D2) intersecting the first direction, the second carriage holding a third carriage, the third bracket is movable with respect to the second bracket in a third direction (D3) intersecting both the first direction and the second direction, the third bracket holding the photographing unit.

Description

Technical Field

[0001] This utility model relates to a printing system, and more particularly to a photographing component disposed in the printing system. Background Technology

[0002] Previously, a visual positioning device (e.g., Patent Document 1) installed in a digital printing system was known for positioning the printing medium during printing operations. In this visual positioning device, a crossbeam with a moving groove is provided, a rotating shaft is movably disposed in the moving groove, and an imaging unit is fixed to the rotating shaft via a connecting plate and clamping blocks. Thus, the visual positioning device of Patent Document 1 can adjust the angle of the imaging unit around the rotating shaft, and can also adjust the position of the imaging unit in both the axial direction of the rotating shaft and the extension direction of the moving groove.

[0003] Patent documents:

[0004] Patent document 1: Chinese utility model CN220923604U.

[0005] In the visual positioning device of Patent Document 1, although it is possible to adjust the position in two directions, namely the axial direction of the rotating shaft and the extension direction of the crossbeam, it is not possible to adjust the position in a third direction that intersects with the above two directions. Utility Model Content

[0006] This invention was made in view of the above-mentioned problems, and one of its objectives is to provide a shooting assembly that enables positional adjustment of the shooting units in three intersecting directions.

[0007] Another objective of this invention is to provide a printing system having the aforementioned photographing components.

[0008] To achieve the above objectives, one embodiment of the present invention provides a photographing assembly disposed in a printing apparatus for printing on a medium, for photographing the medium, comprising: a photographing unit including a camera for photographing; a bracket assembly including a first bracket, a second bracket, and a third bracket; and a crossbeam, wherein the photographing unit is held on the crossbeam via the bracket assembly, the crossbeam holds the first bracket, the first bracket is movable relative to the crossbeam along a first direction, the first bracket holds the second bracket, the second bracket is movable relative to the first bracket along a second direction intersecting the first direction, the second bracket holds the third bracket, the third bracket is movable relative to the second bracket along a third direction intersecting both the first and second directions, and the third bracket holds the photographing unit.

[0009] Therefore, the shooting unit can move in any of the intersecting first, second, and third directions.

[0010] In the shooting assembly of this invention, preferably, one of the first bracket and the second bracket has a first groove formed along the second direction, and the other bracket has a first hole formed. A screw passes through the first groove and is inserted into the first hole, thereby holding the second bracket to the first bracket. Thus, the shooting unit can be moved along the second direction using a simple structure.

[0011] In the shooting assembly of this utility model, preferably, one of the first brackets and the second bracket has a first anti-disengagement groove formed along the second direction, and the other bracket has a first anti-disengagement protrusion capable of being inserted into the first anti-disengagement groove. The first anti-disengagement groove has a first wide portion and a first narrow portion that communicate with each other. The first anti-disengagement protrusion has a first head at its top and a first neck at its base. The sizes of the first head and the first neck are set such that the first head can pass through the first wide portion but not through the first narrow portion in the insertion direction, and the first neck can pass through both the first wide portion and the first narrow portion in the insertion direction. When the first bracket holds the second bracket, the first neck is located in the first narrow portion. Thus, when the shooting assembly is used or when the shooting unit is adjusted in the second direction, it is possible to prevent one of the first brackets and the second bracket from disengaging from the other.

[0012] In the shooting assembly of this invention, preferably, in the other of the first and second brackets, the first anti-dislodgement protrusion and the first hole are formed at the same position in the second direction. When the first bracket holds the second bracket, in the second direction, the distance from the center position of the first anti-dislodgement protrusion in the second direction to the junction of the first narrow portion and the first wide portion in the first anti-dislodgement groove is greater than the distance from the center position of the first hole to the end of the first groove near the first wide portion. Therefore, it is possible to further prevent one of the first and second brackets from dislodging from the other when the shooting unit is being positioned.

[0013] In the shooting assembly of this invention, preferably, one of the second and third brackets has a second groove formed along the third direction, and the other bracket has a second hole formed. A screw passes through the second groove and is inserted into the second hole, thereby holding the third bracket to the second bracket. Thus, the shooting unit can be moved along the third direction using a simple structure.

[0014] In the shooting assembly of this utility model, preferably, one of the second brackets and the third bracket has a second anti-disengagement groove formed along the third direction, and the other bracket has a second anti-disengagement protrusion capable of being inserted into the second anti-disengagement groove. The second anti-disengagement groove has a second wide portion and a second narrow portion that are in communication with each other. The second anti-disengagement protrusion has a second head at its top and a second neck at its base. The second head and the second neck are sized such that the second head can pass through the second wide portion but not through the second narrow portion in the insertion direction, and the second neck can pass through both the second wide portion and the second narrow portion in the insertion direction. When the second bracket holds the third bracket, the second neck is located in the second narrow portion. Thus, when using the shooting assembly or when adjusting the shooting unit's position in the third direction, it is possible to prevent one of the second brackets and the third bracket from disengaging from the other.

[0015] In the shooting assembly of this invention, preferably, in the other of the second and third brackets, the second anti-disengagement protrusion and the second hole are formed at the same position in the third direction. When the second bracket holds the third bracket, in the third direction, the distance from the center position of the second anti-disengagement protrusion in the third direction to the junction of the second narrow portion and the second wide portion in the second anti-disengagement groove is greater than the distance from the center position of the second hole to the end of the second groove near the second wide portion. Therefore, it is possible to further prevent one of the second and third brackets from disengaging from the other when the shooting unit is being positioned.

[0016] In the shooting assembly of this utility model, preferably, a third groove is formed on one of the crossbeam and the first bracket, and a third hole is formed on the other. At least a portion of the third groove is along the first direction, and a screw passes through the at least a portion of the third groove and is inserted into the third hole, thereby holding the first bracket to the crossbeam. Thus, the shooting unit can be moved along the first direction using a simple structure.

[0017] In the shooting assembly of this utility model, preferably, a third anti-disengagement protrusion is formed on the other of the crossbeam and the first bracket, which can be inserted into the third slot. The third slot has a third wide portion and a third narrow portion that communicate with each other. The third narrow portion is along the first direction. The third anti-disengagement protrusion has a third head at the top and a third neck at the base. The size of the third head and the third neck is set such that the third head can pass through the third wide portion but not through the third narrow portion in the insertion direction, and the third neck can pass through both the third wide portion and the third narrow portion in the insertion direction. When the crossbeam holds the first bracket, the third neck is located in the third narrow portion. Thus, when using the shooting assembly or when adjusting the position of the shooting unit in the first direction, it is possible to prevent one of the first bracket and the crossbeam from disengaging from the other.

[0018] In the shooting assembly of this utility model, preferably, the third groove is L-shaped overall, and a chamfer is formed at the bend of the L-shape. This further prevents one of the first bracket and the crossbeam from detaching from the other.

[0019] In the shooting assembly of this utility model, preferably, the dimension of the third head of the third anti-detachment protrusion in the width direction of the third groove is greater than the width of the bent portion. This effectively reduces the size of the bent portion. Furthermore, it prevents the third anti-detachment protrusion and other components from becoming too large, thereby preventing the overall bracket assembly from becoming too large.

[0020] In the shooting assembly of this invention, preferably, the bracket assembly further includes a fourth bracket, which is held by the third bracket and via which the shooting unit is held. The fourth bracket is configured to rotate relative to the third bracket about a first axis in a fourth direction. Thus, the shooting unit can achieve angle adjustment about the fourth direction.

[0021] In the shooting assembly of this invention, preferably, one of the third and fourth brackets has a fourth groove, and the other has a fourth hole. The fourth groove is along an arc centered on the first axis. A screw passes through the fourth groove and is inserted into the fourth hole, thereby holding the fourth bracket to the third bracket. Thus, the shooting unit can be angularly adjusted around a fourth direction using a simple structure.

[0022] In the shooting assembly of this utility model, preferably, one of the third and fourth brackets has a first rotating anti-dislodgement groove, and the other bracket has a first rotating protrusion capable of inserting into the first rotating anti-dislodgement groove. The first rotating anti-dislodgement groove has a first enlarged portion and a first constricted portion that communicate with each other. The first constricted portion is circular about the first axis. The first rotating protrusion has a fourth head at the top and a cylindrical fourth neck at the base. The size of the fourth head and the fourth neck is set such that the fourth head can pass through the first enlarged portion but not through the first constricted portion in the insertion direction, and the fourth neck can pass through both the first enlarged portion and the first constricted portion in the insertion direction. When the third bracket holds the fourth bracket, the fourth neck is located in the first constricted portion. Therefore, it is possible to effectively prevent one of the fourth and third brackets from disengaging relative to the other during angle adjustment, thereby effectively preventing the shooting unit from falling.

[0023] In the shooting assembly of this utility model, preferably, the shooting unit also has a light source for illumination, which has a surface opposite to the edge of one end of the third bracket. When the bracket assembly holds the shooting unit, the distance between the edge of the third bracket and the surface of the light source is less than the distance from the center of the fourth neck of the first rotating protrusion to the junction of the first enlarged portion and the first reduced portion of the first rotating anti-disengagement groove. Therefore, it is possible to further prevent one of the fourth bracket and the third bracket from disengaging relative to the other during angle adjustment, thereby more effectively preventing the shooting unit from falling.

[0024] In the shooting assembly of this utility model, preferably, the shooting unit further includes a camera holder, to which the camera is fixed, and a fourth bracket holds the camera holder. The camera holder is configured to rotate relative to the fourth bracket about a second axis along a fifth direction, which intersects the fourth direction. Thus, the shooting unit can achieve angle adjustment about the fifth direction.

[0025] In the shooting assembly of this invention, preferably, a fifth groove is formed on one of the fourth bracket and the camera holder, and a fifth hole is formed on the other. The fifth groove is along an arc direction centered on the second axis. A screw passes through the fifth groove and is inserted into the fifth hole, thereby holding the camera holder on the fourth bracket. Thus, the shooting unit can be angularly adjusted around the fifth direction using a simple structure.

[0026] In the shooting assembly of this utility model, preferably, a second rotating anti-dislodgement groove is formed on one of the fourth bracket and the camera holder, and a second rotating protrusion capable of being inserted into the second rotating anti-dislodgement groove is formed on the other. The second rotating anti-dislodgement groove has a second enlarged portion and a second reduced portion that are in communication with each other. The second reduced portion is circular about the second axis. The second rotating protrusion has a fifth head at the top and a cylindrical fifth neck at the base. The sizes of the fifth head and the fifth neck are set such that the fifth head can pass through the second enlarged portion but not through the second reduced portion in the insertion direction, and the fifth neck can pass through both the second enlarged portion and the second reduced portion in the insertion direction. When the fourth bracket holds the camera holder, the fifth neck is located in the second reduced portion. Thus, it is possible to effectively prevent one of the fourth bracket and the camera holder from dislodging relative to the other during angle adjustment, thereby effectively preventing the shooting unit from falling.

[0027] In the shooting assembly of this invention, preferably, the shooting unit also has a light source for illumination, which has a surface opposite to the edge of one end of the fourth bracket. When the bracket assembly holds the shooting unit, the distance between the edge of the fourth bracket and the surface of the light source is less than the distance from the center of the fifth neck of the second rotating protrusion to the junction of the second enlarged portion and the second reduced portion of the second rotating anti-disengagement groove. This further prevents one of the fourth bracket and the camera holder from disengaging relative to the other during angle adjustment, thereby more effectively preventing the shooting unit from falling.

[0028] In the imaging assembly of this invention, preferably, a longitudinal beam is also included, the extension direction of which intersects the extension direction of the crossbeam, and the crossbeam is fixed to one end of the longitudinal beam. This allows the imaging unit to be fixed at the desired height relative to the printing device.

[0029] In the imaging assembly of this invention, preferably, one end of the crossbeam is fixed to the first bracket, and the other end of the crossbeam is fixed to the same end of the longitudinal beam. This allows the imaging unit to be fixed in the desired position relative to the printing device in the horizontal direction.

[0030] In the imaging assembly of this invention, preferably, one of the crossbeam and the longitudinal beam has a circular protrusion when viewed from above, and this protrusion has a radially outwardly extending extension at its top. The other of the crossbeam and the longitudinal beam has an opening for the protrusion to enter, and the opening has a notch corresponding to the shape of the extension. When the crossbeam is fixed to the longitudinal beam, the position of the notch is offset from the position of the extension when viewed from above. Therefore, the crossbeam will not detach from the longitudinal beam, and can be reliably held in place by the crossbeam.

[0031] Preferably, the imaging assembly of this invention also includes a base plate, which is fixed to the printing device, and the other end of the longitudinal beam is fixed to the base plate. This allows the entire imaging assembly to be fixed to the printing device.

[0032] In the imaging assembly of this invention, preferably, the base plate is a long strip, one end of which is fixed to the longitudinal beam, and the other end of which is fixed to the bottom of the printing device. This allows the imaging assembly to be fixed relative to the printing device without interfering with any parts of the printing device.

[0033] In addition, to achieve the other objective mentioned above, another aspect of the printing system of this utility model includes the aforementioned photographing component and the aforementioned printing apparatus. Attached Figure Description

[0034] Figure 1 This is an overall structural diagram of a printing system equipped with a camera module.

[0035] Figure 2 It is a three-dimensional view showing part of the crossbeam, bracket assembly, and camera unit in the assembled state.

[0036] Figure 3 It is an exploded perspective view showing part of the crossbeam, bracket assembly, and camera unit in their unassembled state.

[0037] Figure 4 This is a three-dimensional view of the first bracket.

[0038] Figure 5 This is a 3D view of the second bracket.

[0039] Figure 6 This is a 3D view of the third bracket.

[0040] Figure 7 This is a three-dimensional view of the fourth bracket.

[0041] Figure 8 It is a 3D diagram of a camera holder with the camera fixed to it.

[0042] Figure 9This is a diagram showing a portion of the beam viewed from a third-direction perspective.

[0043] Figure 10A This is a diagram showing a portion of the crossbeam, bracket assembly, and imaging unit viewed from a third-party perspective.

[0044] Figure 10B It is an enlarged image of the area outlined by the single-dot dashed line in 10A, with the screws removed.

[0045] Figure 11A This is an image showing a portion of the crossbeam, bracket assembly, and camera unit in their assembled state, viewed from one side in the first direction.

[0046] Figure 11B It is Figure 11A The area outlined by the single-dot dashed line in the image has been enlarged and the screws have been removed.

[0047] Figure 12A This is a diagram showing a portion of the crossbeam, bracket assembly, and camera unit in their assembled state, viewed from the second direction.

[0048] Figure 12B It is Figure 12A The area outlined by the single-dot dashed line in the image has been enlarged and the screws have been removed.

[0049] Figure 12C It is Figure 12A The area outlined by the double-dotted line in the image has been enlarged and the screws have been removed.

[0050] Figure 13A This is an image showing a portion of the crossbeam, bracket assembly, and camera unit in their assembled state, viewed from the other side of the first direction.

[0051] Figure 13B It is Figure 13A The area outlined by the single-dot dashed line in the image has been enlarged and the screws have been removed.

[0052] Figure 14 This is a three-dimensional view of one end of the longitudinal beam.

[0053] Figure 15 This is a diagram showing another part of the beam viewed from a third direction.

[0054] Figure 16 This is a diagram showing another part of the crossbeam and the longitudinal beam in the assembled state, viewed from a third-party perspective.

[0055] Symbol Explanation

[0056] 100…Shooting assembly, 1…Shooting unit, 2…Bracket assembly, 6…Camera, 7…Light source, 7A…Surface, 9…Tablet, 10…First bracket, 12…First slot, 14…First anti-detachment slot, 14a…First wide section, 14b…First narrow section, 16…Third hole, 17…Third anti-detachment protrusion, 17a…Third head, 17b…Third neck, 20…Second bracket, 21…First anti-detachment protrusion, 21a…First head, 21b…First neck, 22…First hole, 23…Second anti-slip protrusion, 23a…Second head, 23b…Second neck, 26…Second hole, 30…Third bracket, 30A…Edge, 32…Second groove, 34…Second anti-slip groove, 34a…Second wide section, 34b…Second narrow section, 36…Fourth groove, 38…First rotating anti-slip groove, 38a…First enlarged section, 3 8b…First reduced portion, 40…Fourth bracket, 40A…Edge, 41…First rotating protrusion, 41a…Fourth head, 41b…Fourth neck, 42…Fourth hole, 46…Fifth groove, 48…Second rotating anti-detachment groove, 48a…Second enlarged portion, 48b…Second reduced portion, 50…Crossbeam, 52…Third groove, 52a…Third wide portion, 52b…Third narrow portion, 52c…Bend, 54…Opening, 54a…Notch, 60…Longitudinal beam, 61…Protrusion, 61a…Extend, 70…Base plate, 80…Camera holder, 81…Second rotating protrusion, 81a…Fifth head, 81b…Fifth neck, 82…Fifth hole, D1…First direction, D2…Second direction, D3…Third direction, D4…Fourth direction, D5…Fifth direction, P…Printing device, X1…First axis, X2…Second axis. Detailed Implementation

[0057] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described below are only for illustrating the structure that this utility model can adopt, and are not intended to limit it.

[0058] In addition, for ease of explanation, the following description will use... Figure 1 The upper and lower sections shown are referred to as "upper" and "lower," respectively. The direction in which the first bracket 10 moves relative to the crossbeam 50 is called "first direction D1," the direction in which the second bracket 20 moves relative to the first bracket 10 is called "second direction D2," and the direction in which the third bracket 30 moves relative to the second bracket 20 is called "third direction D3." First direction D1 intersects with second direction D2, preferably orthogonally. Third direction D3 intersects with both first direction D1 and second direction D2, preferably orthogonally. Furthermore, the first axis X1, which serves as the rotation center of the fourth bracket 40 (see...) Figure 6 The extension direction of ) is called "fourth direction D4", and the second axis X2, which serves as the rotation center of the camera holder 80 (see Figure 7The extension direction of the fourth direction (D4) is called the "fifth direction D5". The fifth direction D5 intersects the fourth direction D4 and is preferably orthogonal. In this embodiment, the fourth direction D4 is the same as the second direction D2, but it can also be different. In this embodiment, the fifth direction D5 is the same as the first direction D1, but it can also be different.

[0059] <Overview of Printing Systems>

[0060] like Figure 1 As shown, the printing system of this invention includes a printing device P and an imaging component 100. The printing device P, for example, includes a platen 9 on which the medium to be printed is placed, and is capable of forming an image of the medium placed on the platen 9. The imaging component 100 sets a camera 6 (described later) above the platen 9 to photograph the medium in order to achieve visual positioning of the medium.

[0061] like Figure 1 As shown, the imaging assembly 100 includes: an imaging unit 1, a bracket assembly 2, a crossbeam 50, a longitudinal beam 60, and a base plate 70. The base plate 70 is fixed to the printing device P. The base plate 70 is a long strip plate, with the longitudinal beam 60 fixed to one end of the base plate 70 and the other end of the base plate 70 fixed to the bottom of the printing device P. In the imaging assembly 100, the imaging unit 1 is held on the crossbeam 50 via the bracket assembly 2. The bracket assembly 2 is fixed to one end of the crossbeam 50, the other end of the crossbeam 50 is fixed to one end of the longitudinal beam 60, and the other end of the longitudinal beam 60 is fixed to one end of the base plate 70.

[0062] In this manner, the imaging assembly 100 can be fixed as a whole to the printing device P. Furthermore, the longitudinal beam 60 allows the imaging unit 1 to be fixed relative to the printing device P at the desired height. Additionally, since the base plate 70 is located at the bottom of the printing device P, the imaging assembly 100 will not interfere with any other parts of the printing device P when it is fixed relative to the printing device P.

[0063] <Structure of the shooting components>

[0064] Next, see Figures 2 to 16 The structure of each part of the shooting assembly 100, including the shooting unit 1, bracket assembly 2, crossbeam 50, and longitudinal beam 60, is explained in detail.

[0065] like Figure 3 As shown, the shooting unit 1 includes at least: a camera 6 for shooting, a light source 7 for illumination, and a camera holder 80 for holding the camera 6. The bracket assembly 2 includes a first bracket 10, a second bracket 20, a third bracket 30, and a fourth bracket 40.

[0066] like Figure 2 , 3As shown, in the assembled state of bracket assembly 2, the first bracket 10 to the fourth bracket 40 are arranged sequentially from top to bottom. The crossbeam 50 holds the first bracket 10, which is movable relative to the crossbeam 50 along a first direction D1. The first bracket 10 holds the second bracket 20, which is movable relative to the first bracket 10 along a second direction D2. The second bracket 20 holds the third bracket 30, which is movable relative to the second bracket 20 along a third direction D3. The third bracket 30 holds the fourth bracket 40, which is movable relative to the third bracket 30 around a first axis X1 (described later) along a fourth direction D4. Figure 6 The camera 6 rotates. The third bracket 30 holds the shooting unit 1 via the fourth bracket 40, specifically holding the camera holder 80 of the shooting unit 1. The camera 6 is fixed to the camera holder 80, for example, by screws, or by snap-fit ​​or adhesive.

[0067] exist Figures 4 to 7 The structure of each bracket in bracket assembly 2 is shown in the figure.

[0068] The structure of the first bracket 10 is as follows: Figure 4 As shown, a first anti-detachment groove 14 and two first grooves 12 are formed in the first bracket 10. The first grooves 12 and the first anti-detachment grooves 14 are both along the second direction D2. The first anti-detachment groove 14 has a first wide portion 14a and a first narrow portion 14b that are connected to each other.

[0069] The structure of the second bracket 20 is as follows: Figure 5 As shown. The second bracket 20 has a first anti-dislodgement protrusion 21, two first holes 22, a second anti-dislodgement protrusion 23, and two second holes 26. The first anti-dislodgement protrusion 21 can be inserted into the first anti-dislodgement groove 14 of the first bracket 10. Specifically, the first anti-dislodgement protrusion 21 has a first head 21a at the top and a first neck 21b at the base. The sizes of the first head 21a and the first neck 21b are set such that, when viewed along the first direction D1, the width of the first head 21a is smaller than the width of the first wide portion 14a of the first anti-dislodgement groove 14 but larger than the width of the first narrow portion 14b, and the width of the first neck 21b is smaller than the widths of both the first wide portion 14a and the first narrow portion 14b. In other words, the first head 21a can pass through the first wide portion 14a in the direction in which the first anti-disengagement protrusion 21 is inserted into the first anti-disengagement groove 14, but cannot pass through the first narrow portion 14b, and the first neck 21b can pass through both the first wide portion 14a and the first narrow portion 14b in the direction of insertion. The shape of the first anti-disengagement protrusion 21 is not particularly limited, as long as the above-mentioned size relationship is met.

[0070] The structure of the third bracket 30 is as follows: Figure 6As shown. The third bracket 30 has two second grooves 32, a second anti-disengagement groove 34, three fourth grooves 36, and a first rotational anti-disengagement groove 38. The second grooves 32 and the second anti-disengagement groove 34 are both along the third direction D3. The second anti-disengagement protrusion 23 of the second bracket 20 (see...) Figure 5 The device can be inserted into the second anti-disengagement slot 34. The second anti-disengagement slot 34 has a second wide portion 34a and a second narrow portion 34b that are interconnected. The first rotary anti-disengagement slot 38 has a first enlarged portion 38a and a first reduced portion 38b that are interconnected. The first reduced portion 38b is circular about a first axis X1 along the fourth direction D4, and the first enlarged portion 38a is larger than the first reduced portion 38b and is circular about a first axis X1 along the fourth direction D4. Each fourth slot 36 is along an arc direction centered on the first axis X1.

[0071] In addition, such as Figure 5 , 6 As shown, the second anti-dislodgement protrusion 23 of the second bracket 20 described above has a structure similar to that of the first anti-dislodgement protrusion 21. That is, the second anti-dislodgement protrusion 23 has a second head 23a at the top and a second neck 23b at the base. The sizes of the second head 23a and the second neck 23b are set such that, when viewed along the second direction D2, the width of the second head 23a is smaller than the width of the second wide portion 34a of the second anti-dislodgement groove 34 but larger than the width of the second narrow portion 34b, and the width of the second neck 23b is smaller than the width of both the second wide portion 34a and the second narrow portion 34b. In other words, the second head 23a can pass through the second wide portion 34a but not the second narrow portion 34b in the direction in which the second anti-dislodgement protrusion 23 is inserted into the second anti-dislodgement groove 34, and the second neck 23b can pass through both the second wide portion 34a and the second narrow portion 34b in the direction of insertion. The shape of the second anti-dislodgement protrusion 23 is not particularly limited, as long as the above-described size relationship is satisfied.

[0072] The structure of the fourth bracket 40 is as follows Figure 7 As shown. The fourth bracket 40 has a first rotating protrusion 41, a second rotating anti-dislodgement groove 48, three fourth holes 42, and two fifth grooves 46. The first rotating protrusion 41 has a fourth head 41a at its apex and a fourth neck 41b at its base. The fourth head 41a is, for example, a circular plate, but may also be other shapes, and the fourth neck 41b is cylindrical. Figure 6 , 7As shown, the sizes of the fourth head 41a and the fourth neck 41b are set such that, when viewed along the fourth direction D4, the diameter of the fourth head 41a is smaller than the diameter of the first enlarged portion 38a of the first rotating anti-disengagement groove 38 of the third bracket 30 but larger than the diameter of the first reduced portion 38b, and the diameter of the fourth neck 41b is smaller than the diameters of both the first enlarged portion 38a and the first reduced portion 38b. In other words, the fourth head 41a can pass through the first enlarged portion 38a in the direction in which the first rotating protrusion 41 is inserted into the first rotating anti-disengagement groove 38 but cannot pass through the first reduced portion 38b, and the fourth neck 41b can pass through both the first enlarged portion 38a and the first reduced portion 38b in the direction of insertion.

[0073] Furthermore, the second rotating anti-detachment groove 48 has a second enlarged portion 48a and a second reduced portion 48b that are interconnected. The second reduced portion 48b is circular with the second axis X2 along the fifth direction D5 as its center, and the second enlarged portion 48a is larger than the first reduced portion 48b and is circular with the second axis X2 along the fifth direction D5 as its center. Each fifth groove 46 is along an arcuate direction centered on the second axis X2.

[0074] The structure of the camera holder 80 is as follows Figure 8 As shown. The camera holder 80 has a second rotating protrusion 81 and two fifth holes 82. The second rotating protrusion 81 has a fifth head 81a at its apex and a fifth neck 81b at its base. The fifth head 81a is, for example, plate-shaped, but can also be other shapes, and the fifth neck 81b is cylindrical. Figure 7 , 8 As shown, the sizes of the fifth head 81a and the fifth neck 81b are set such that, when viewed along the fifth direction D5, the diameter of the fifth head 81a is smaller than the diameter of the second enlarged portion 48a of the second rotating anti-disengagement groove 48 of the fourth bracket 40 but larger than the diameter of the second reduced portion 48b, and the diameter of the fifth neck 81b is smaller than the diameters of both the second enlarged portion 48a and the second reduced portion 48b. In other words, the fifth head 81a can pass through the second enlarged portion 48a in the direction in which the second rotating protrusion 81 is inserted into the second rotating anti-disengagement groove 48 but cannot pass through the second reduced portion 48b, and the fifth neck 81b can pass through both the second enlarged portion 48a and the second reduced portion 48b in the insertion direction.

[0075] exist Figure 9 , Figure 10A , Figure 10B A portion of the crossbeam 50 is shown in the image. (Example) Figure 9As shown, a third groove 52 is provided at one end of the crossbeam 50 for holding the first bracket 10. The third groove 52 has a third wide portion 52a and a third narrow portion 52b that are connected to each other, with the third narrow portion 52b along the first direction D1. In addition, the third groove 52 is generally L-shaped, and a chamfer is formed at the bend 52c of the L-shape.

[0076] In addition, such as Figure 4 , Figure 10A , 10B As shown, the first bracket 10 also includes a third anti-disengagement protrusion 17 and two third holes 16. The third anti-disengagement protrusion 17 has a third head 17a at the top and a third neck 17b at the base. The sizes of the third head 17a and the third neck 17b are configured such that the dimension of the third head 17a in the width direction of the third groove 52 is smaller than the width of the third wide portion 52a of the third groove 52 but larger than the width of the third narrow portion 52b and the bend portion 52c. The dimension of the third neck 17b in the width direction of the third groove 52 is smaller than the width of the third wide portion 52a, the third narrow portion 52b, and the bend portion 52c. In other words, the third head 17a can pass through the third wide portion 52a and the bend portion 52c in the direction in which the third anti-disengagement protrusion 17 is inserted into the third groove 52 but cannot pass through the third narrow portion 52b. The third neck 17b can pass through the third wide portion 52a, the third narrow portion 52b, and the bend portion 52c in the direction of insertion. The shape of the third anti-slip protrusion 17 is not particularly limited, as long as it meets the above-mentioned size relationship.

[0077] like Figure 14 , Figure 16 As shown, a protrusion 61 is formed at one end of the longitudinal beam 60 for fixing the crossbeam 50. The protrusion 61 is cylindrical. Two extensions 61a are formed at the top of the protrusion 61, extending radially outward from the protrusion 61.

[0078] like Figure 15 , Figure 16 As shown, an opening 54 is also formed at the other end of the crossbeam 50 for fixing to the longitudinal beam 60. This opening 54 allows the aforementioned protrusion 61 to enter, and the opening 54 has a notch 54a with a shape corresponding to the protrusion 61a.

[0079] <Assembly of camera components>

[0080] The following is a detailed explanation of the assembly process for the camera assembly 100.

[0081] The first step is to assemble the fourth bracket 40 onto the third bracket 30. First, insert the first rotating protrusion 41 of the fourth bracket 40 into the first enlarged portion 38a of the first rotating anti-dislodgement groove 38 of the third bracket 30. Then, move the first rotating protrusion 41 toward the first constricted portion 38b until the fourth neck 41b of the first rotating protrusion 41 is located in the first constricted portion 38b, and the three fourth holes 42 of the fourth bracket 40 are exposed through the three fourth slots 36 of the third bracket 30. Then, insert a screw through the fourth slot 36 into the fourth hole 42, thereby holding the fourth bracket 40 onto the third bracket 30. Install a nut, clamping the third bracket 30 and the fourth bracket 40 between the screw head and the nut. The assembly of the fourth bracket 40 onto the third bracket 30 is complete.

[0082] The second step involves assembling the assembled fourth bracket 40 and third bracket 30 onto the second bracket 20. First, the second anti-detachment protrusion 23 of the second bracket 20 is inserted into the second wide portion 34a of the second anti-detachment groove 34 of the third bracket 30. Then, the second anti-detachment protrusion 23 is moved towards the second narrow portion 34b until the second neck 23b of the second anti-detachment protrusion 23 is located in the second narrow portion 34b, and the two second holes 26 of the second bracket 20 are exposed through the two second grooves 32 of the third bracket 30. Next, a screw is inserted through the second groove 32 into the second hole 26, thereby holding the third bracket 30 onto the second bracket 20. A nut is installed, clamping the second bracket 20 and the third bracket 30 between the screw head and the nut, and then the screw is tightened. At this point, the assembly of the third bracket 30 onto the second bracket 20 is complete.

[0083] The third step involves assembling the assembled fourth bracket 40, third bracket 30, and second bracket 20 into the first bracket 10. First, the first anti-detachment protrusion 21 of the second bracket 20 is inserted into the first wide portion 14a of the first anti-detachment groove 14 of the first bracket 10. Then, the first anti-detachment protrusion 21 is moved towards the first narrow portion 14b until the first neck 21b of the first anti-detachment protrusion 21 is located in the first narrow portion 14b, and the two first holes 22 of the second bracket 20 are exposed through the two first grooves 12 of the first bracket 10. Next, a screw is inserted through the first groove 12 into the first hole 22, thereby holding the second bracket 20 within the first bracket 10. A nut is installed, clamping the first bracket 10 and the second bracket 20 between the screw head and the nut, and then the screw is tightened. At this point, the assembly of the second bracket 20 into the first bracket 10 is complete.

[0084] Through the above steps, the assembly of bracket assembly 2 is completed.

[0085] The fourth step is to install the assembled bracket assembly 2 onto the crossbeam 50. First, insert the third anti-detachment protrusion 17 of the first bracket 10 into the third wide portion 52a of the third groove 52 of the crossbeam 50. Then, move the third anti-detachment protrusion 17 through the bend 52c of the third groove 52 towards the third narrow portion 52b, until the third neck 17b of the third anti-detachment protrusion 17 is located in the third narrow portion 52b, and both third holes 16 of the first bracket 10 are exposed through the third narrow portion 52b. Then, insert the screw through the third narrow portion 52b into the third hole 16, thereby holding the first bracket 10 onto the crossbeam 50. Install the nut so that the first bracket 10 and the crossbeam 50 are clamped between the screw head and the nut, and then tighten the screw. At this point, the installation of the bracket assembly 2 onto the crossbeam 50 is complete.

[0086] Step 5: Install the shooting unit 1 onto the bracket assembly 2. First, insert the second rotating protrusion 81 of the camera holder 80 into the second enlarged portion 48a of the second rotating anti-dislodgement groove 48 of the fourth bracket 40. Then, move the second rotating protrusion 81 toward the second reduced portion 48b until the fifth neck 81b of the second rotating protrusion 81 is located in the second reduced portion 48b, and the two fifth holes 82 of the camera holder 80 are exposed through the two fifth slots 46 of the fourth bracket 40. Then, insert the screw through the fifth slot 46 into the fifth hole 82, thereby holding the camera holder 80 onto the fourth bracket 40. Install the nut so that the fourth bracket 40 and the camera holder 80 are clamped between the screw head and the nut, and then tighten the screw. At this point, the assembly of the camera holder 80 onto the fourth bracket 40 is complete. That is, the installation of the shooting unit 1 onto the bracket assembly 2 is complete. The bracket assembly 2 at this time is as follows: Figures 11A to 13B As shown.

[0087] Step 6: Install the crossbeam 50 onto the longitudinal beam 60. First, insert the protrusion 61 of the longitudinal beam 60 into the opening 54 of the crossbeam 50 from below. At this time, the two protrusions 62a pass through the corresponding notches 54a. Then, rotate the crossbeam 50 so that the position of the notches 54a is misaligned with the position of the protrusions 62a when viewed from above. This prevents the crossbeam 50 from detaching from the longitudinal beam 60, ensuring that the crossbeam 50 is reliably held on the longitudinal beam 60. When the crossbeam 50 is rotated by a predetermined angle (45 degrees in this embodiment), the fastening holes around the opening 54 align with the fastening holes around the protrusions 61. Insert the screws into the fastening holes around the opening 54 and the fastening holes around the protrusions 61, install the nuts, and clamp the crossbeam 50 and the longitudinal beam 60 between the screw heads and the nuts. Then tighten the screws. At this point, the installation of the crossbeam 50 onto the longitudinal beam 60 is complete.

[0088] <Position and Angle Adjustment of Shooting Unit 1>

[0089] Using the imaging assembly 100 of this embodiment, the position of the imaging unit 1 in the first direction D1 to the third direction D3 and the angle around the fourth direction D4 and the fifth direction D5 can be adjusted according to the actual needs of the shooting. See below. Figures 10A to 13B The instructions provide a detailed explanation of how to adjust the position and angle.

[0090] See below. Figure 10A , Figure 10B The position adjustment of the shooting unit 1 in the first direction D1 will be explained. First, loosen the screw inserted into the third hole 16 of the first bracket 10. Then, move the third anti-dislodgement protrusion 17 of the first bracket 10 along the third narrow portion 52b of the third groove 52 of the crossbeam 50 within a specified range (e.g., ±5mm). After the third anti-dislodgement protrusion 17 is positioned according to the shooting requirements, tighten the screw again. Thus, the position adjustment of the first bracket 10 relative to the crossbeam 50 in the first direction D1 is completed, and the position adjustment of the shooting unit 1 in the first direction D1 is also completed.

[0091] Furthermore, since the third slot 52 is provided with the third wide portion 52a and the third narrow portion 52b as described above, it is possible to effectively prevent the first bracket 10 from dislodging from the crossbeam 50 when the shooting assembly 100 is used or when the shooting unit 1 is adjusted in position.

[0092] Furthermore, since the third groove 52 is set to an L-shape with a bend 52c, it is possible to further prevent the first bracket 10 from detaching from the crossbeam 50.

[0093] Furthermore, since a chamfer is provided in the bending portion 52c, the size of the bending portion 52c can be effectively reduced. This also prevents the enlargement of components such as the third head 17a of the third anti-loosening protrusion 17 and the head of the screw inserted into the third groove 52, thereby preventing the overall enlargement of the bracket assembly 2.

[0094] See below. Figure 11A , Figure 11B The position adjustment of the shooting unit 1 in the second direction D2 will be explained. First, loosen the screw that inserts into the first hole 22 of the second bracket 20. Then, move the first anti-disengagement protrusion 21 of the second bracket 20 along the first narrow portion 14b of the first anti-disengagement groove 14 of the first bracket 10 within a specified range (e.g., ±5mm). After positioning the first anti-disengagement protrusion 21 in the specified position according to the shooting requirements, tighten the screw again. The position adjustment of the second bracket 20 relative to the first bracket 10 in the second direction D2 is completed, and thus the position adjustment of the shooting unit 1 in the second direction D2 is completed.

[0095] Furthermore, since the first anti-detachment groove 14 is provided with the first wide portion 14a and the first narrow portion 14b as described above, after the assembly operation is completed, the first anti-detachment protrusion 21 is located in the first narrow portion 14b. Therefore, it is possible to effectively prevent the second bracket 20 from detaching from the first bracket 10 during position adjustment or printing operations.

[0096] In addition, such as Figure 5 , Figure 11A , Figure 11B As shown, the first anti-disengagement protrusion 21 and at least one first hole 22 are formed at the same position in the second direction D2. When the first bracket 10 holds the second bracket 20, in the second direction D2, the distance L2 from the center position of the first anti-disengagement protrusion 21 in the second direction D2 to the junction of the first wide portion 14a and the first narrow portion 14b in the first anti-disengagement groove 14 is greater than the distance L1 from the center position of the first hole 22 to the end of the first groove 12 near the first wide portion 14a (L2>L1).

[0097] Therefore, even when the screws are loosened during the position adjustment operation of the second bracket 20 relative to the first bracket 10, allowing relative movement between them, the first anti-disengagement protrusion 21 remains positioned in the first narrow portion 14b and does not enter the first wide portion 14a. This is because, before the first anti-disengagement protrusion 21, located in the first narrow portion 14b, enters the first wide portion 14a, the screw inserted into the first hole 22 collides with the end of the first groove 12 near the first wide portion 14a, thereby preventing further movement of the first anti-disengagement protrusion 21 towards the first wide portion 14a. Therefore, the first anti-disengagement protrusion 21 will not easily disengage from the first anti-disengagement groove 14. Thus, it is possible to further prevent the second bracket 20 from disengaging relative to the first bracket 10 during position adjustment.

[0098] See below. Figure 12A , Figure 12B The position adjustment of the shooting unit 1 in the third direction D3 will be explained below. First, loosen the screw inserted into the second hole 26 of the second bracket 20. Then, move the second anti-disengagement protrusion 23 of the second bracket 20 along the second narrow portion 34b of the second anti-disengagement groove 34 of the third bracket 30 within a specified range (e.g., ±10mm). After positioning the second anti-disengagement protrusion 23 in the specified position according to shooting requirements, tighten the screw again. The position adjustment of the second bracket 20 relative to the third bracket 30 in the third direction D3 is completed, and thus the position adjustment of the shooting unit 1 in the third direction D3 is completed.

[0099] Furthermore, since the second anti-detachment groove 34 is provided with the second wide portion 34a and the second narrow portion 34b as described above, after the assembly operation is completed, the second anti-detachment protrusion 23 is located in the second narrow portion 34b. Therefore, it is possible to effectively prevent the second bracket 20 from detaching from the third bracket 30 when the shooting assembly 100 is used or when the shooting unit 1 is adjusted in position.

[0100] In addition, such as Figure 5 , Figure 12A , Figure 12B As shown, the second anti-disengagement protrusion 23 and at least one second hole 26 are formed at the same position on the third direction D3. When the second bracket 20 holds the third bracket 30, on the third direction D3, the distance L2' from the center position of the second anti-disengagement protrusion 23 on the third direction D3 to the junction of the second wide portion 34a and the second narrow portion 34b in the second anti-disengagement groove 34 is greater than the distance L1' from the center position of the second hole 26 to the end of the second groove 32 near the second wide portion 34a (L2'>L1').

[0101] Therefore, even when the screws are loosened during the position adjustment operation of the second bracket 20 relative to the third bracket 30, allowing relative movement between them, the second anti-disengagement protrusion 23 remains positioned in the second narrow portion 34b and does not enter the second wide portion 34a. This is because, before the second anti-disengagement protrusion 23 located in the second narrow portion 34b can enter the second wide portion 34a, the screw inserted into the second hole 26 collides with the end of the second groove 32 near the second wide portion 34a, thereby preventing further movement of the second anti-disengagement protrusion 23 into the second wide portion 34a. Therefore, the second anti-disengagement protrusion 23 will not easily disengage from the second anti-disengagement groove 34. Thus, it is possible to further prevent the second bracket 20 from disengaging relative to the third bracket 30 during position adjustment.

[0102] See below. Figure 12A , Figure 12C The angle adjustment of the shooting unit 1 around the fourth direction D4 will be explained. After loosening the screw inserted into the fourth hole 42 of the fourth bracket 40, the first rotating protrusion 41 of the fourth bracket 40 is rotated within a specified range (e.g., ±5 degrees) around the first axis X1 within the first reduced portion 38b of the first rotating anti-dislodgement groove 38 of the third bracket 30. After rotating the first rotating protrusion 41 to a specified angle according to the shooting requirements, the screw is tightened again. Thus, the angle adjustment of the fourth bracket 40 relative to the third bracket 30 around the fourth direction D4 is completed, and the angle adjustment of the shooting unit 1 around the fourth direction D4 is also completed.

[0103] In addition, since the first rotation anti-disengagement groove 38 is provided with the first enlarged portion 38a and the first reduced portion 38b as described above, after the assembly operation is completed, the first rotation protrusion 41 is located in the first reduced portion 38b. Therefore, it is possible to effectively prevent the fourth bracket 40 from disengaging from the third bracket 30 during angle adjustment or use. Furthermore, it is possible to effectively prevent the shooting unit 1 from falling due to this.

[0104] In addition, as Figure 12A , Figure 12C shown, the light source 7 of the shooting unit 1 has a surface 7A opposite to the edge portion 30A of one end of the third bracket 30. In the state where the bracket assembly 2 holds the shooting unit 1, the distance L3 between the edge portion 30A of the third bracket 30 and this surface 7A is smaller than the distance L4 from the center of the fourth neck portion 41b of the first rotation protrusion 41 (see Figure 7 ) to the junction of the first enlarged portion 38a and the first reduced portion 38b of the first rotation anti-disengagement groove 38 (L3 < L4). The distance L3 between the edge portion 30A of the third bracket 30 and the surface 7A of the light source 7 is not particularly limited, as long as it does not affect the rotation of the fourth bracket 40 relative to the third bracket 30 around the fourth direction D4 within a specified range.

[0105] Thus, even when the shooting unit 1 is lifted due to a user's misoperation during angle adjustment around the fourth direction D4, the first rotation protrusion 41 always remains in the first reduced portion 38b and does not enter the first enlarged portion 38a. This is because, before the first rotation protrusion 4 that is located in the first reduced portion 38b enters the first enlarged portion 38a, the edge portion 30A of the third bracket 30 collides with the surface 7A of the light source 7, thereby preventing the further movement of the first rotation protrusion 41 towards the first enlarged portion 38a. Therefore, the first rotation protrusion 41 does not easily disengage from the first rotation anti-disengagement groove 38. Thus, it is possible to further prevent the fourth bracket 40 from disengaging from the third bracket 30 during angle adjustment, and furthermore, it is possible to more effectively prevent the shooting unit 1 from falling.

[0106] Hereinafter, referring to Figure 13A , Figure 13B , the angle adjustment of the shooting unit 1 around the fifth direction D5 will be described. After loosening the screw inserted into the fifth hole 82 of the camera holder 80, the second rotation protrusion 81 of the camera holder 80 rotates around the second axis X2 within a specified range (for example, a range of ±5 degrees) in the second reduced portion 48b of the second rotation anti-disengagement groove 48 of the fourth bracket 40. After rotating the second rotation protrusion 81 by a specified angle according to the shooting needs, the screw is tightened again. Thus, the angle adjustment of the camera holder 80 relative to the fourth bracket 40 around the fifth direction D5 is completed, and furthermore, the angle adjustment of the shooting unit 1 around the fifth direction D5 is completed.

[0107] In addition, since the second rotation anti-disengagement groove 48 is provided with the second enlarged portion 48a and the second reduced portion 48b as described above, after the assembly operation is completed, the fifth neck portion 81b of the second rotation protrusion 81 is located in the second reduced portion 48b. Therefore, it is possible to effectively prevent the camera holder 80 from disengaging from the fourth bracket 40 during angle adjustment or use. Furthermore, it is possible to effectively prevent the shooting unit 1 from dropping due to this.

[0108] In addition, as Figure 13A , Figure 13B shown, when the bracket assembly 2 holds the shooting unit 1, the distance L3' between the edge portion 40A below the fourth bracket 40 and the surface 7A of the light source 7 is smaller than the distance L4' from the center of the fifth neck portion 81b of the second rotation protrusion 81 (see Figure 8 ) to the junction of the second enlarged portion 48a and the second reduced portion 48b of the second rotation anti-disengagement groove 48 (L3' < L4'). The distance L3 between the edge portion 40A of the fourth bracket 40 and the surface 7A of the light source 7 is not particularly limited as long as it does not affect the rotation of the camera holder 80 relative to the fourth bracket 40 around the fifth direction D5 within a specified range.

[0109] Thus, even when the shooting unit 1 is lifted due to a user's misoperation during angle adjustment around the fifth direction D5, the second rotation protrusion 81 always remains in the second reduced portion 48b and does not enter the second enlarged portion 48a. This is because, before the second rotation protrusion 81 located in the second reduced portion 48b enters the second enlarged portion 48a, the edge portion 40A of the fourth bracket 40 collides with the surface 7A of the light source 7, thereby preventing the further movement of the second rotation protrusion 81 towards the second enlarged portion 48a. Therefore, the second rotation protrusion 81 does not easily disengage from the second rotation anti-disengagement groove 48. Thus, it is possible to further prevent the camera holder 80 from disengaging from the fourth bracket 40 during angle adjustment, and furthermore, it is possible to more effectively prevent the shooting unit 1 from dropping due to this.

[0110] <Variant Example>

[0111] The present utility model is not limited to the above-described embodiments, and various changes can be made without departing from its gist.

[0112] For example, in the above-described embodiment, an example of applying the shooting assembly 100 to a printing system provided with a platen 9 has been described. However, the shooting assembly 100 can also be applied to a printing system without a platen 9, such as a printing system provided with a roll-to-roll printing apparatus or a printing system provided with a digital laser printing apparatus.

[0113] In the above embodiment, an example of a bracket assembly 2 having the first bracket 10 to the fourth bracket 40 was described. However, the bracket assembly may also lack the fourth bracket 40 and only have the first bracket 10 to the third bracket 30. In this case, the camera holder 80 is held by the third bracket 30. Using such a bracket assembly, the position of the shooting unit in the first direction D1 to the third direction D3 can be adjusted with a simple structure.

[0114] In the above embodiments, a first groove 12 is formed in the first bracket 10, and a first hole 22 is formed in the second bracket 20. However, the positions of the first groove 12 and the first hole 22 can be interchanged, as long as they are formed in one of the first bracket 10 and the second bracket 20 respectively. Similarly, in the above embodiments, a second groove 32 is formed in the third bracket 30, and a second hole 26 is formed in the second bracket 20. However, the positions of the second groove 32 and the second hole 26 can be interchanged, as long as they are formed in one of the second bracket 20 and the third bracket 30 respectively. In the above embodiments, a third groove 52 is formed in the crossbeam 50, and a third hole 16 is formed in the first bracket 10. However, the positions of the third groove 52 and the third hole 16 can be interchanged, as long as they are formed in one of the crossbeam 50 and the first bracket 10 respectively. In the above embodiments, a fourth groove 36 is formed in the third bracket 30, and a fourth hole 42 is formed in the fourth bracket 40. However, the positions of the fourth slot 36 and the fourth hole 42 can be interchanged, as long as they are formed on one of the third bracket 30 and the fourth bracket 40 respectively. In the above embodiment, a fifth slot 46 is formed in the fourth bracket 40, and a fifth hole 82 is formed in the camera holder 80. The positions of the fifth slot 46 and the fifth hole 82 can be interchanged, as long as they are formed on one of the fourth bracket 40 and the camera holder 80 respectively.

[0115] In the above embodiments, a first anti-detachment groove 14 is formed in the first bracket 10, and a first anti-detachment protrusion 21 is formed in the second bracket 20. However, the positions of the first anti-detachment groove 14 and the first anti-detachment protrusion 21 can be interchanged, as long as they are formed in either the first bracket 10 or the second bracket 20. Similarly, in the above embodiments, a second anti-detachment groove 34 is formed in the third bracket 30, and a second anti-detachment protrusion 23 is formed in the second bracket 20. However, the positions of the second anti-detachment groove 34 and the second anti-detachment protrusion 23 can be interchanged, as long as they are formed in either the second bracket 20 or the third bracket 30. In the above embodiments, a third groove 52 is formed in the crossbeam 50, and a third anti-detachment protrusion 17 is formed in the first bracket 10. However, the positions of the third groove 52 and the third anti-detachment protrusion 17 can be interchanged, as long as they are formed in either the crossbeam 50 or the first bracket 10.

[0116] In the above embodiment, a first rotational anti-detachment groove 38 is formed in the third bracket 30, and a first rotational protrusion 41 is formed in the fourth bracket 40. However, the positions of the first rotational anti-detachment groove 38 and the first rotational protrusion 41 can be interchanged, as long as they are formed in either the third bracket 30 or the fourth bracket 40. Similarly, in the above embodiment, a second rotational anti-detachment groove 48 is formed in the fourth bracket 40, and a second rotational protrusion 81 is formed in the camera holder 80. However, the positions of the second rotational anti-detachment groove 48 and the second rotational protrusion 81 can be interchanged, as long as they are formed in either the fourth bracket 40 or the camera holder 80.

[0117] In the above embodiment, the first hole 22, the second hole 26, the third hole 16, the fourth hole 42, and the fifth hole 82 for screw insertion are provided in two or three portions. The number of these holes can be arbitrarily set according to actual needs, as long as the components in the bracket assembly can be fastened to each other. The same applies to the first slot 12, the second slot 32, the third slot 52, the fourth slot 36, and the fifth slot 46. Furthermore, it is not necessary to fasten every hole and slot with a screw; holes and slots can be selected for fastening according to actual needs.

[0118] In the above embodiment, the third groove 52 is provided at one end of the crossbeam 50, and the opening 54 is provided at the other end of the crossbeam 50. However, the positions of the third groove 52 and the opening 54 are not limited to these, and can be provided at any position of the crossbeam 50 as needed.

[0119] In the above embodiment, the third groove 52 is L-shaped, but it is not limited to this. The third groove 52 can also be other shapes, as long as at least a portion of the third groove 52 is along the first direction D1.

[0120] In the above embodiment, the imaging assembly 100 includes a longitudinal beam 60 and a base plate 70, but the longitudinal beam 60 and the base plate 70 may be omitted. For example, the crossbeam 50 may be directly fixed to the printing device P.

[0121] In the above embodiment, the protrusion 61 is cylindrical, but it is not limited to this. The protrusion 61 can be circular when viewed from above, for example, it can also be cylindrical.

[0122] In the above embodiment, there are two protrusions 61a, but the number of protrusions 61a is not particularly limited; it can be one or more. In the above embodiment, the number of notches 54a corresponds to the number of protrusions 61a, but the number of notches 54a can also be more than the number of protrusions 61a.

[0123] In the above embodiment, the base plate 70 is a long strip plate, but it is not limited to this. The shape of the base plate 70 can be arbitrarily set as needed.

Claims

1. A photographing assembly, disposed in a printing apparatus for printing on a medium, for photographing the medium, characterized in that, Possessing: a photographing unit including a camera for photographing; a bracket assembly including a first bracket, a second bracket, and a third bracket; and a cross beam, the photographing unit being held to the cross beam via the bracket assembly, the cross beam holding the first bracket, the first bracket being movable relative to the cross beam in a first direction, the first bracket holding the second bracket, the second bracket being movable relative to the first bracket in a second direction intersecting the first direction, the second bracket holding the third bracket, the third bracket being movable relative to the second bracket in a third direction intersecting both the first direction and the second direction, the third bracket holding the photographing unit.

2. The photographing assembly according to claim 1, wherein a first slot along the second direction is formed in one of the first bracket and the second bracket, and a first hole is formed in the other, a screw is inserted through the first slot into the first hole, whereby the second bracket is held to the first bracket.

3. The photographing assembly according to claim 2, wherein a first anti-extraction slot along the second direction is formed in one of the first bracket and the second bracket, and a first anti-extraction protrusion capable of being inserted into the first anti-extraction slot is formed in the other, the first anti-extraction slot has a first wide portion and a first narrow portion communicating with each other, the first anti-extraction protrusion has a first head at a tip end and a first neck at a base end, the first head and the first neck are sized such that the first head is capable of passing through the first wide portion but not the first narrow portion in the direction of insertion, and the first neck is capable of passing through both the first wide portion and the first narrow portion in the direction of insertion, in a state where the first bracket holds the second bracket, the first neck is located in the first narrow portion.

4. The photographing assembly according to claim 3, wherein in the other of the first bracket and the second bracket, the first anti-extraction protrusion and the first hole are formed at the same position in the second direction, in a state where the first bracket holds the second bracket, a distance in the second direction from a center position of the first anti-extraction protrusion in the second direction to a junction of the first narrow portion and the first wide portion in the first anti-extraction slot is greater than a distance from a center position of the first hole to an end of the first slot near the first wide portion.

5. The photographing assembly according to claim 1, wherein a second slot along the third direction is formed in one of the second bracket and the third bracket, and a second hole is formed in the other, a screw is inserted through the second slot into the second hole, whereby the third bracket is held to the second bracket.

6. The photographing assembly according to claim 5, wherein one of the second bracket and the third bracket is formed with a second escape-preventing groove along the third direction, and the other is formed with a second escape-preventing protrusion that can be inserted into the second escape-preventing groove, the second escape-preventing groove has a second wide portion and a second narrow portion that communicate with each other, the second escape-preventing protrusion has a second head at a tip end and a second neck at a base end, the second head and the second neck are sized such that the second head can pass through the second wide portion but not the second narrow portion in the direction of insertion, and the second neck can pass through both the second wide portion and the second narrow portion in the direction of insertion, in a state where the second bracket holds the third bracket, the second neck is positioned at the second narrow portion.

7. The photographing assembly according to claim 6, wherein in the other of the second bracket and the third bracket, the second escape-preventing protrusion and the second hole are formed at the same position in the third direction, in a state where the second bracket holds the third bracket, a distance from a center position of the second escape-preventing protrusion in the third direction to a junction of the second narrow portion and the second wide portion in the second escape-preventing groove is greater than a distance from a center position of the second hole to an end of the second groove near the second wide portion in the third direction.

8. The photographing assembly according to claim 1, wherein one of the cross beam and the first bracket is formed with a third groove, and the other is formed with a third hole, at least a portion of the third groove is along the first direction, a screw is inserted through the at least a portion of the third groove into the third hole, so that the first bracket is held to the cross beam.

9. The photographing assembly according to claim 8, wherein the other of the cross beam and the first bracket is formed with a third escape-preventing protrusion that can be inserted into the third groove, the third groove has a third wide portion and a third narrow portion that communicate with each other, the third narrow portion is along the first direction, the third escape-preventing protrusion has a third head at a tip end and a third neck at a base end, the third head and the third neck are sized such that the third head can pass through the third wide portion but not the third narrow portion in the direction of insertion, and the third neck can pass through both the third wide portion and the third narrow portion in the direction of insertion, in a state where the cross beam holds the first bracket, the third neck is positioned at the third narrow portion.

10. The photographing assembly according to claim 9, wherein the third groove is an L-shaped as a whole, and a chamfer is formed at a bend portion of the L-shaped.

11. The photographing assembly according to claim 10, wherein a dimension of the third head of the third escape-preventing protrusion in a width direction of the third groove is greater than a width of the bend portion.

12. The photographing assembly according to claim 1, wherein The bracket assembly further includes a fourth bracket, the third bracket holding the fourth bracket, and holding the photographing unit via the fourth bracket, The fourth bracket is configured to be rotatable with respect to the third bracket about a first axis in a fourth direction.

13. The photographing assembly according to claim 12, wherein One of the third bracket and the fourth bracket is formed with a fourth groove, and the other is formed with a fourth hole, the fourth groove being in a direction of an arc of a circle centered on the first axis, A screw is inserted through the fourth groove into the fourth hole, thereby holding the fourth bracket to the third bracket.

14. The photographing assembly according to claim 13, wherein One of the third bracket and the fourth bracket is formed with a first rotation anti-escape groove, and the other is formed with a first rotation protrusion insertable into the first rotation anti-escape groove, The first rotation anti-escape groove has a first enlarged portion and a first reduced portion that communicate with each other, the first reduced portion being circular about the first axis, The first rotation protrusion has a fourth head at a tip end and a fourth neck at a base end, the fourth head and the fourth neck being sized such that the fourth head is insertable through the first enlarged portion but not through the first reduced portion in the direction of insertion, and the fourth neck is insertable through both the first enlarged portion and the first reduced portion in the direction of insertion, In a state where the third bracket holds the fourth bracket, the fourth neck is located in the first reduced portion.

15. The photographing assembly according to claim 14, wherein The photographing unit further has a light source for illumination, the light source having a face opposite a rim of one end of the third bracket, In a state where the bracket assembly holds the photographing unit, a distance between the rim of the third bracket and the face of the light source is smaller than a distance from a center of the fourth neck of the first rotation protrusion to an interface between the first enlarged portion and the first reduced portion of the first rotation anti-escape groove.

16. The photographing assembly according to claim 12, wherein The photographing unit further includes a camera holder, the camera being fixed to the camera holder, The fourth bracket holds the camera holder, The camera holder is configured to be rotatable with respect to the fourth bracket about a second axis in a fifth direction that intersects the fourth direction.

17. The photographing assembly according to claim 16, wherein One of the fourth bracket and the camera holder is formed with a fifth groove, and the other is formed with a fifth hole, the fifth groove being in a direction of an arc of a circle centered on the second axis, A screw member is inserted through the fifth groove into the fifth hole, thereby holding the camera holder to the fourth bracket.

18. The photographing assembly according to claim 17, wherein A second rotation anti-extraction groove is formed in one of the fourth bracket and the camera holder, and a second rotation protrusion capable of being inserted into the second rotation anti-extraction groove is formed in the other, The second rotation anti-extraction groove has a second enlarged portion and a second reduced portion that communicate with each other, and the second reduced portion is circular about the second axis, The second rotation protrusion has a fifth head at a tip end and a fifth neck that is cylindrical at a base end, and the fifth head and the fifth neck are sized such that the fifth head can pass through the second enlarged portion but not the second reduced portion in the direction of insertion, and the fifth neck can pass through both the second enlarged portion and the second reduced portion in the direction of insertion, In a state in which the fourth bracket holds the camera holder, the fifth neck is positioned in the second reduced portion.

19. The photographing assembly according to claim 18, wherein The photographing unit further has a light source for illumination, the light source having a face opposite a rim portion of one end of the fourth bracket, In a state in which the bracket assembly holds the photographing unit, a distance between the rim portion of the fourth bracket and the face of the light source is smaller than a distance from a center of the fifth neck of the second rotation protrusion to an interface between the second enlarged portion and the second reduced portion of the second rotation anti-extraction groove.

20. The photographing assembly according to any one of claims 1 to 19, wherein A longitudinal beam is further provided, the longitudinal beam having an extending direction that intersects an extending direction of the cross beam, and the cross beam is fixed to one end of the longitudinal beam.

21. The photographing assembly according to claim 20, wherein One end of the cross beam is fixed with the first bracket, and the other end of the cross beam is fixed to the one end of the longitudinal beam.

22. The photographing assembly according to claim 20, wherein One of the cross beam and the longitudinal beam is formed with a protrusion that is circular in plan view, the protrusion being formed at a tip end with a protruding portion that protrudes to a radial outer side, The other of the cross beam and the longitudinal beam is formed with an opening into which the protrusion enters, the opening having a notch that corresponds to a shape of the protruding portion, In a state in which the cross beam is fixed to the longitudinal beam, a position of the notch is offset from a position of the protruding portion in plan view.

23. The photographing assembly according to claim 20, wherein A base plate is further provided, the base plate being fixed to the printing device, The other end of the longitudinal beam is fixed to the base plate.

24. The photographing assembly according to claim 23, wherein The base plate is a long, plate-shaped, one end of the base plate is fixed with the longitudinal beam, and the other end of the base plate is fixed to a bottom portion of the printing device.

25. A printing system, comprising: The photographing assembly according to any one of claims 1 to 24; and The printing device.

Images