Printer and media protective cover for rotary axis printing used in printer

Abstract

To provide a printer having a low-cost media protective cover for rotary-axis printing that can be easily processed and assembled correspondingly to size (small diameter to large diameter, and short length to long length) of a media for rotary axis printing and a printing range, as well as, that can be easily fixed to and detached from a three-dimensional support body.SOLUTION: In a printer (10), a media protective cover (40) for rotary-axis printing is formed with an opening (43) formed so as to face a liquid ejection area of a three-dimensional object (30), covers the three-dimensional object (30), and can be formed by bending a tabular member. The media protective cover (40) for rotary-axis printing comprises a top surface portion (42), a front side surface portion (51), a rear side surface portion (61), a left leg portion (71), and a right leg portion (81).SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a rotary shaft print media protection cover that protects a medium for rotary shaft printing set on a three-dimensional support body of an installation stand inside a printer. [Background technology]

[0002] Some printers have a three-dimensional support having a rotation axis on an installation stand inside the device, and a medium for printing on the rotation axis is set on this three-dimensional support. A technology described in Patent Document 1 is known as a printer that sets a medium for printing on the rotation axis on such a three-dimensional support and prints on it.

[0003] The liquid ejection device disclosed in Patent Document 1 comprises a stage, a head that ejects liquid onto a three-dimensionally shaped substrate while moving in a movement direction, a head support that supports the head and moves relative to the stage in a direction that intersects the movement direction, a substrate support that is provided on the stage and supports the three-dimensionally shaped substrate and rotates the three-dimensionally shaped substrate, a frame that supports the substrate support, and a cover member that is fitted into the frame and has a hole formed to face the liquid ejection area of ​​the three-dimensionally shaped substrate.

[0004] The cover member makes it possible to prevent the cylindrical printing object and the cylindrical object support from being soiled even if the ejected UV ink becomes a mist and diffuses.

[0005] However, cylindrical printing materials are not always the same size (diameter), and printing may be performed on cylindrical printing materials of different sizes. In this case, it becomes necessary to change the size of the cover member according to the size of the cylindrical printing material. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6202159 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the case of a structure in which a cover member is fitted into a frame, such as the liquid ejection device according to Patent Document 1, fitting the cover member into the frame is time-consuming. Also, if the size of the cylindrical print material changes, the cylindrical print material hits the cover member, making printing impossible. To address this issue, it is necessary not only to change the size of the cover member according to the size of the cylindrical print material, but also to adjust the fitting portion of the cover member into the frame, which requires the preparation of multiple cover members of different sizes with fitting accuracy, resulting in high component costs.

[0008] The objective of the present invention is to provide a low-cost rotary shaft printing media protective cover that can be easily processed and assembled to fit the size of rotary shaft printing media (small diameter to large diameter, short length to long length) and printing range, and that can be easily fixed to and detached from a three-dimensional support. [Means for solving the problem]

[0009] According to the present disclosure, a three-dimensional support having a rotating shaft is provided on an installation stand in a printer, and a rotating shaft print media protection cover that protects a medium for rotating shaft printing set on the three-dimensional support is provided, The medium has a cylindrical or columnar shape, its axis is arranged along the rotation axis of the three-dimensional support, and printing is performed on the upper side of the outer circumferential surface while rotating, The rotary shaft print media protection cover is formed by bending a plate material, the medium is provided with a rectangular top surface portion having an opening formed therein so that an upper side of the medium is exposed; a front side portion connected to a front edge of the top surface portion via a first fold line and folded downward; a rear side portion connected to a rear edge of the top surface portion via a second fold line and folded downward; a left leg portion connected to a left edge of the top surface portion via a third fold line and folded downward; and a right leg portion connected to a right edge of the top surface portion via a fourth fold line and folded downward; There is provided a rotary shaft print media protection cover, characterized in that at least the left leg and the right leg are mounted on the installation stand. Effect of the Invention

[0010] According to the present disclosure, it is possible to suppress the adhesion of mist to the entire media other than the printing surface during printing. It is possible to block the reflected light of an ultraviolet lamp (UV lamp) passing through the inside of the media, and prevent ink discharge defects caused by an increase in the amount of light reflected by this UV lamp to the head nozzle. It is possible to provide a low-cost rotating shaft printing media protective cover that can be easily processed and assembled according to the size (small diameter to large diameter, short length to long length) of the media for rotating shaft printing and the printing range, and can be easily fixed and attached to and detached from the three-dimensional support body. The rotating shaft printing media protective cover can be easily fixed to and detached from the installation stand, as it is simply placed directly on the installation stand around the three-dimensional support body. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a development view of a rotating shaft print media protection cover according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of an assembled rotating shaft print media protection cover according to an embodiment. [Diagram 3] 13 is an oblique view of the assembled rotating shaft print media protection cover attached to the three-dimensional object support and installation stand. FIG. [Figure 4] 4 is a perspective view of the rotating shaft print media protection cover of FIG. 3 attached to a three-dimensional object support and an installation stand. FIG. [Diagram 5] 4 is a plan view of the rotating shaft print media protection cover of FIG. 3 attached to a three-dimensional object support body and an installation stand. [Figure 6] 4 is a front view of the rotating shaft print media protection cover of FIG. 3 attached to a three-dimensional object support body and an installation stand. [Figure 7] 13 is an explanatory diagram of a state in which a rotating shaft print media protection cover of another embodiment is attached to a three-dimensional object support and an installation stand according to the embodiment. FIG. [Figure 8]13 is a development view for explaining guide lines of the rotating shaft print media protection cover according to the embodiment. FIG. [Figure 9] 11A to 11C are diagrams illustrating the operation of the rotary shaft print media protection cover according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of a printer;

[0013] <Example> (About Printer 10) Please refer to Figures 3 to 6. The printer 10 is a UV type printer (UV printer) capable of forming a color image on a medium such as paper. A UV printer is a printer that uses UV ink that hardens when irradiated with ultraviolet light.

[0014] The printer 10 comprises a case that defines the exterior, an opening / closing main cover that opens and closes an opening formed in the case, an installation stand 11 provided within the case, a three-dimensional support 20 provided on the installation stand 11 and supporting cylindrical media 30, and a rotary shaft printing media protection cover 40 that protects the media 30 for rotary shaft printing set on the three-dimensional support 20.

[0015] The printer 10 also includes rails extending in the left-right width direction above the installation stand 11, a carriage movably mounted on the rails, ink cartridges filled with ink of different colors, ink tubes connected to allow ink to be delivered from the ink cartridges, a head (ink head) connected to the ink tubes and housed in the carriage, a UV lamp provided on the carriage for irradiating ultraviolet light, a maintenance device for performing maintenance on the ink head, and a control device for controlling the carriage etc.

[0016] The maintenance device includes a wiping device that wipes the nozzle surface of the ink head, and a capping device that protects the ink ejection surface.

[0017] The printer 10 prints on the medium 30 that passes under the head while moving the carriage. Note that a UV printer prints by irradiating UV ink with ultraviolet light from a UV lamp to harden it, and can print on a variety of materials, from hard materials such as resin, wood, and leather to highly flexible materials.

[0018] (Regarding the three-dimensional support 20) The three-dimensional object support 20 comprises a main body portion 21 formed horizontally, a rotating shaft 22 arranged along the longitudinal direction of the main body portion 21 and rotatably supporting the media 30 formed in a cylindrical shape, and a fixing portion 23 arranged on the main body portion 21 and removably fixing the main body portion 21 to an installation stand.

[0019] (About Media30) The medium 30 is a cylindrical or columnar printing object, the axis of which is arranged along the rotation axis 22 of the three-dimensional object support 20, and printing is performed on the upper side of the outer circumferential surface while rotating. The material may be paper such as ordinary paper, resins such as polyvinyl chloride and polyester, or metals such as aluminum and iron, and members made of various materials are possible. Hereinafter, the three-dimensional medium 30 may also be referred to as the three-dimensional object 30.

[0020] (Heads, ink cartridges and ink) The ink cartridges include a cyan cartridge filled with cyan ink, a magenta cartridge filled with magenta ink, a yellow cartridge filled with yellow ink, a black cartridge filled with black ink, etc. The number and colors of cartridges constituting the ink cartridge can be selected arbitrarily.

[0021] (About the Rotating Shaft Print Media Protection Cover 40) Please refer to Figs. 1 to 6. The rotary shaft print media protection cover 40 is formed by bending a plate material 41. The plate material 41 is made of synthetic resin, and is configured from a material that does not transmit ultraviolet (UV) rays. Note that, although the plate material 41 is made of synthetic resin in the embodiment, it is not limited to this, and it may be made of metal, paper, or even a material that transmits ultraviolet rays.

[0022] The rotating shaft printing media protection cover 40 comprises a rectangular top surface portion 42 with a rectangular opening 43 formed therein so that the upper side of the media 30 is exposed, a front side portion 51 connected to the front edge of the top surface portion 42 via a first fold line 52 and folded downward, a rear side portion 61 connected to the rear edge of the top surface portion 42 via a second fold line 62 and folded downward, a left leg portion 71 connected to the left edge of the top surface portion 42 via a third fold line 72 and folded downward, and a right leg portion 81 connected to the right edge of the top surface portion 42 via a fourth fold line 82 and folded downward.

[0023] The left leg portion 71 includes a left leg front folded portion 73 that is folded inwardly along a fifth fold line 74 at its front edge, a left leg rear folded portion 75 that is folded inwardly along a sixth fold line 76 at its rear edge, an insertion claw 77 provided on the left leg front folded portion 73, and an insertion claw 77 provided on the left leg rear folded portion 75.

[0024] The right leg 81 includes a right leg front folded portion 83 which is folded inwardly along a seventh fold line 84 at its front edge, a right leg rear folded portion 85 which is folded inwardly along an eighth fold line 86 at its rear edge, an insertion claw 87 provided on the right leg front folded portion 83, an insertion claw 87 provided on the right leg rear folded portion 85, a right leg front reinforcement portion 93 which is folded inwardly along a ninth fold line 94 from the right leg front folded portion 83, and a right leg rear reinforcement portion 95 which is folded inwardly along a tenth fold line 96 from the right leg rear folded portion 85.

[0025] The front side surface portion 51 is provided with insertion holes 53, 53 at the left and right ends, and is assembled by inserting the left and right insertion claws 77, 87 into the left and right insertion holes 53, 53, respectively.

[0026] The rear side surface portion 61 is provided with insertion holes 63, 63 at the left and right ends, and is assembled into a box shape by inserting the left and right insertion claws 77, 87 into the left and right insertion holes 63, 63, respectively.

[0027] At least the left leg 71 and the right leg 81 of the assembled rotating-shaft print media protection cover 40 are placed on the installation stand 11. The rotating-shaft print media protection cover 40 simply surrounds the three-dimensional object support 20 and is placed directly on the installation stand 11, so no alignment is required as long as the media 30 protrudes from the horizontally elongated opening 43, and it can be easily fixed to and detached from the installation stand 11.

[0028] The vertical length L2 of the front side surface portion 51 and the vertical length L3 of the rear side surface portion 61 are formed to be shorter than the vertical length L1 of the left leg portion 71 and the vertical length L1 of the right leg portion 81. Only the left leg portion 71 and the right leg portion 81 abut against the installation base 11, and cavities 54, 64 are formed between the front side surface portion 51 and the installation base 11 and between the rear side surface portion 61 and the installation base 11. From these cavities 54, 64, it can be confirmed whether the media 30 is placed inside the rotating shaft print media protection cover 40.

[0029] (Regarding another embodiment of the rotary shaft print media protection cover 40) Please refer to Fig. 7. Fig. 7 is an explanatory diagram of a state in which a rotating-shaft print media protection cover 40 of another embodiment is attached to a three-dimensional object support body 20 and an installation stand 11, and the rotating-shaft print media protection cover 40 of another embodiment includes a folding portion 55 that is folded onto the surface of the right leg portion 81 via a crease on the right edge of the front side surface portion 51, an insertion claw 56 provided on this folding portion 55, a folding portion 65 that is folded onto the surface of the right leg portion 81 via a crease on the right edge of the rear side surface portion 61, and an insertion claw 66 provided on this folding portion 65.

[0030] The right leg 81 is formed with insertion holes 88 into which the insertion claws 56, 66 are respectively inserted.

[0031] In addition, the first fold line 52, the second fold line 62, the third fold line 72, the fourth fold line 82, the fifth fold line 74, the sixth fold line 76, the seventh fold line 84, the eighth fold line 86, the ninth fold line 94, and the tenth fold line 96 are formed to be weak. Specifically, the fold line portions are cut or pressed so that they are thinner than other portions of the plate material 41. Note that the fold line portions are not limited to those that are cut or pressed, and may simply have lines drawn as markers.

[0032] (About the guide lines 79 and 89) Please refer to Fig. 8. In the rotating-shaft print media protection cover 40, the left leg 71 has a plurality of guide lines 79 for adjusting the height. In addition, the right leg 81 has a plurality of guide lines 89 for adjusting the height. The height (length L1) of the left leg 71 and the right leg 81 can be easily adjusted by cutting the guide lines 79, 89.

[0033] (Operation of the printer 10 of the embodiment) Please refer to FIG. 9 in addition to FIG. 8. FIG. 9(A) shows the rotating shaft print media protection cover 40A when a medium 30A with a small diameter D1 is set on the three-dimensional support 20. FIG. 9(B) shows the rotating shaft print media protection cover 40B when a medium 30B with a large diameter D2 is set on the three-dimensional support 20. The diameter D2 is larger than the diameter D1. In this case, the height H2 of the rotating shaft print media protection cover 40B is higher than the height H1 of the rotating shaft print media protection cover 40A. If the rotating shaft print media protection cover 40 has the guide lines 79 and 89 shown in FIG. 8, the heights H1 and H2 can be easily adjusted by cutting the guide lines 79 and 89.

[0034] The above-described printer 10 will now be summarized. Please refer to Figs. 1 to 9. First, UV ink is discharged by the head onto the recording medium 30 mounted on the installation stand 11 while moving in the main scanning direction relative to the installation stand 11. In the printer 10, when the recording medium 30 is a three-dimensional object 30, the three-dimensional object 30 is supported by the three-dimensional object support 20 so as to be rotatable with respect to the head, and an opening 43 is formed so as to face the ink discharge area, and a rotating shaft print media protection cover 40 is provided. The three-dimensional object 30 is cylindrical or columnar, and its axis is arranged along the rotation axis of the three-dimensional object support 20, and printing is performed on the upper side of the outer circumferential surface while rotating. The rotary shaft print media protection cover 40 includes a rectangular upper surface portion 42 in which an opening 43 is formed, a front side surface portion 51 connected to the front edge of the upper surface portion 42 via a first fold line 52 and bendable downward, a rear side surface portion 61 connected to the rear edge of the upper surface portion 42 via a second fold line 62 and bendable downward, a left leg portion 71 connected to the left edge of the upper surface portion 42 via a third fold line 72 and bendable downward, and a right leg portion 81 connected to the right edge of the upper surface portion 42 via a fourth fold line 82 and bendable downward. The cover is made of a plate-like member and is configured to be assembled by folding the upper surface portion 42, the front side surface portion 51, the rear side surface portion 61, the left leg portion 71, and the right leg portion 81. The vertical length of at least one of the front side surface portion 51 and the rear side surface portion 61, or the left leg portion 71 and the right leg portion 81 is set to be equal to or greater than the height of the three-dimensional object support body 20.

[0035] UV ink is discharged by the head onto the recording medium 30 mounted on the installation stand 11 while moving in the main scanning direction relative to the installation stand 11. When the recording medium 30 is a three-dimensional object 30, the three-dimensional object 30 is supported rotatably relative to the head by the three-dimensional object support 20, and is covered by a rotating-shaft print media protection cover 40 formed so that an opening 43 faces the ink discharge area. The rotating-shaft print media protection cover 40 is made of plate-like members including a rectangular top surface portion 42 in which the opening 43 is formed, and a front side surface portion 51, a rear side surface portion 61, a right leg portion 81, and a left leg portion 71 connected to each edge of the top surface portion via respective fold lines, and is assembled by folding each of these portions. The rotating shaft print media protection cover 40 has a vertical length of at least one of the front side surface portion 51 and the rear side surface portion 61, or the left leg portion 71 and the right leg portion 81 set to be equal to or greater than the height of the three-dimensional object support 20, so that the three-dimensional object support 20 can be enclosed by placing the rotating shaft print media protection cover 40 on the installation stand 11. By enclosing the three-dimensional object support 20 with the rotating shaft print media protection cover 40, it is possible to suppress the adhesion of mist to the entire media 30 other than the printing surface during printing. Furthermore, it is possible to block the reflected light of an ultraviolet lamp (UV lamp) passing through the inside of the media 30, and prevent ink discharge failure due to an increase in the amount of reflected light to the head nozzle caused by the reflected light of the UV lamp. Furthermore, by processing the size of the opening 43 and the length of the front side surface portion 51 and the rear side surface portion 61, or the left leg portion 71 and the right leg portion 81 according to the size (small diameter to large diameter, short length to long length) and printing range of the media 30 for rotating shaft printing, it is possible to accommodate various sizes, and since it is a plate-shaped member, it is easy to process and assemble. Furthermore, the rotary shaft print media protection cover 40 is simply placed directly on the installation stand 11, surrounding the three-dimensional object support 20, so that it can be easily fixed to and detached from the installation stand 11.

[0036] Secondly, in the first printer 10, the rotating shaft printing media protection cover 40 is formed such that the vertical lengths of the front side portion 51 and the rear side portion 61 are shorter than the vertical lengths of the left leg portion 71 and the right leg portion 81, and only the left leg portion 71 and the right leg portion 81 abut against the mounting base 11, and cavities 54, 64 are formed between the front side portion 51, the rear side portion 61 and the mounting base 11.

[0037] The size of the rotating shaft printing media protection cover 40 needs to be adjusted depending on the size of the media 30, but the vertical lengths of the front side portion 51 and the rear side portion 61 are formed shorter than the vertical lengths of the left leg portion 71 and the right leg portion 81, so that only the left leg portion 71 and the right leg portion 81 abut against the mounting base 11, and cavities 54, 64 are formed between the front side portion 51 and the rear side portion 61 and the mounting base 11.Therefore, the size of the rotating shaft printing media protection cover 40 can be easily adjusted by cutting only the left leg portion 71 and the right leg 81 to the appropriate length.

[0038] See Figures 8 and 9. Thirdly, in the first or second printer 10, the rotating-shaft print media protection cover 40 has a guide line for adjusting the height provided on at least one of the left leg portion 71 and the right leg portion 81 or the front side portion 51 and the rear side portion 61, and the height of at least one of the left leg portion 71 and the right leg portion 81 or the front side portion 51 and the rear side portion 61 can be adjusted by cutting the guide lines 79, 89.

[0039] Guide lines (hanging lines) are drawn as a processing guide for each size (diameter) of the media 30 to be printed, so that the rotating shaft print media protection cover 40 can be easily processed to the desired size.

[0040] Fourthly, in any of the first to third printers 10, the rotating shaft print media protection cover 40 may have a guide line for the opening on the upper surface 42 for adjusting the size of the opening 43 according to the diameter of the three-dimensional object 30. This makes it possible to easily adjust the opening 43 to any size.

[0041] 1 to 7. Fifth, in any of the first to fourth printers 10, the rotating-shaft print media protection cover 40 has insertion claws 77, 87 or insertion holes 88 formed in the left leg portion 71 and the right leg portion 81, and insertion holes 53, 63 or insertion claws 56, 66 formed in the front side surface portion 51 and the rear side surface portion 61, and is assembled by inserting the insertion claws 56, 66, 77, 87 into the insertion holes 53, 63, 88.

[0042] The rotary shaft print media protection cover 40 can be easily assembled by bending and inserting the plate material 41 without the need for adhesive.

[0043] In the embodiment, the guide lines 79, 89 are provided only on the left leg 71 and the right leg 81, but the present invention is not limited to this and the guide lines may be formed on the portion of the top surface 42 that corresponds to the opening 43. This makes it possible to easily form the opening 43 according to the size of the media 30 by cutting the guide lines of the opening 43.

[0044] In addition, in the embodiment, the rotating shaft printing media protection cover 40 is simply placed on the installation stand 11 surrounding the three-dimensional object support 20, and no alignment is required as long as the media 30 protrudes from the horizontal opening 43; however, the position of the opening 43 may be set to match the position of the media 30 by, for example, aligning the corner of the right leg 81 of the rotating shaft printing media protection cover 40 with the corner of the three-dimensional object support 20 to match the shape of the three-dimensional object support 20. [Industrial Applicability]

[0045] The rotating shaft print media protective cover of the present invention is suitable as a rotating shaft print media protective cover that protects a medium for rotating shaft printing set on a three-dimensional support. [Explanation of symbols]

[0046] 10. Printer 11…Installation stand 20…3D object support 21...Main body 22...Rotation axis 30...Media (printed material (three-dimensional object)) 40, 40A, 40B...Rotary shaft print media protection cover 41...Plate material 42...Top part 43…Opening 51…Front side part 52…First fold line 53, 63…insertion holes 54, 64...Cavity 61...Rear side part 62…Second fold line 71...Left leg 72…Third fold line 77, 87…insertion claws 79, 89...guideline 81...Right leg 82…Fourth fold line

Claims

1. a mounting base on which a recording medium is mounted; a head that ejects liquid onto a recording medium while moving relatively in a main scanning direction with respect to the installation table; a three-dimensional object support provided on the installation table and configured to rotatably support the three-dimensional object relative to the head when the recording medium is a three-dimensional object; A rotary shaft print media protection cover is provided which has an opening formed to face a liquid ejection area of ​​a three-dimensional object and covers the three-dimensional object, The three-dimensional object has a cylindrical or columnar shape, an axis of the three-dimensional object is arranged along the rotation axis of the three-dimensional object support, and printing is performed on the upper side of the outer circumferential surface while rotating, The rotating shaft print media protection cover is the opening is formed in a rectangular top surface portion; a front side portion connected to the front edge of the top surface portion via a first fold line and bendable downward; a rear side portion connected to the rear edge of the top surface portion via a second fold line and bendable downward; a left leg portion connected to the left edge of the top surface portion via a third fold line and bendable downward; and a right leg portion connected to the right edge of the top surface portion via a fourth fold line and bendable downward; the top surface portion is made of a plate-like member and is configured to be assembled by folding the top surface portion, the front side portion, the rear side portion, the left leg portion and the right leg portion; A printer characterized in that the vertical length of at least one of the left leg and the right leg or the front side surface and the rear side surface is set to be greater than or equal to the height of the three-dimensional object support.

2. The rotating shaft print media protection cover is The vertical length of the front side surface portion and the rear side surface portion is shorter than the vertical length of the left leg portion and the right leg portion, 2. The printer according to claim 1, wherein only the left leg and the right leg come into contact with the installation base, and there are spaces between the installation base and the front and rear side surfaces.

3. The rotating shaft print media protection cover is At least one of the left leg portion and the right leg portion or the front side portion and the rear side portion is provided with a plurality of guide lines for height adjustment; The printer according to claim 1 , wherein the height of at least one of the left leg portion and the right leg portion or the front side portion and the rear side portion is adjustable by cutting the guide line.

4. The rotating shaft print media protection cover is The printer according to claim 1 , wherein the upper surface portion is provided with a plurality of guide lines for the opening for adjusting the size of the opening in accordance with a diameter of the three-dimensional object.

5. The left leg and the right leg are formed with an insertion claw or an insertion hole, The front side surface portion and the rear side surface portion are formed with insertion holes or insertion tabs, The printer according to claim 1 , wherein the rotary shaft print media protection cover is assembled by inserting the insertion tabs into the insertion holes.

6. A rotary shaft print media protection cover is used in a printer having a mounting base on which a recording medium is mounted, a head which ejects liquid onto the recording medium while moving relatively to the mounting base in a main scanning direction, and a three-dimensional object support which is provided on the mounting base and which supports the three-dimensional object rotatably relative to the head when the recording medium is a three-dimensional object, the cover having an opening formed so as to face a liquid ejection area of ​​the three-dimensional object and which covers the three-dimensional object, The three-dimensional object has a cylindrical or columnar shape, an axis of the three-dimensional object is arranged along the rotation axis of the three-dimensional object support, and printing is performed on the upper side of the outer circumferential surface while rotating, The rotating shaft print media protection cover is the rectangular upper surface portion in which the opening is formed, a front side portion connected to the front edge of the upper surface portion via a first fold line and bendable downward, a rear side portion connected to the rear edge of the upper surface portion via a second fold line and bendable downward, a left leg portion connected to the left edge of the upper surface portion via a third fold line and bendable downward, and a right leg portion connected to the right edge of the upper surface portion via a fourth fold line and bendable downward, and is configured to be assembled by folding a plate-shaped member; A rotating shaft printing media protection cover characterized in that the vertical length of at least one of the left leg and the right leg or the front side portion and the rear side portion is set to be greater than or equal to the height of the three-dimensional support body.

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