Printing apparatus

Abstract

To reinforce a base frame having an overhang portion while enabling effective utilization of a space.SOLUTION: A printing apparatus 1 includes: a printing unit 5 that performs printing on media M while moving in a movement direction; a platen 3B that is provided at a position facing the printing unit 5 in a printing range of the printing unit 5 and supports the media M; a base frame 100 that extends in the movement direction and supports the platen 3B; and a pair of leg frames 7 that support the base frame 100 at an interval in the movement direction, where the base frame 100 includes an overhang portion 110 that overhangs outward from the leg frame 7 in the movement direction, and the overhang portion 110 includes a reinforcement portion 120 in which a plurality of metal plates overlap each other when viewed from a direction intersecting the movement direction.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a printing apparatus.

Background Art

[0002] Conventionally, various printing apparatuses have been used. Among them, there is a printing apparatus including a printing unit, a platen that supports a medium at a position facing the printing unit, and a base frame that supports the platen. For example, Patent Document 1 discloses a printing apparatus including a discharge head as a printing unit that performs printing by reciprocating scanning, a platen, a base frame, and a pair of leg frames, and the base frame reaches outside the leg frames in the reciprocating scanning direction of the discharge head.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a configuration having a so-called overhanging portion where the base frame reaches outside the leg frames in the moving direction of the printing unit like the printing apparatus of Patent Document 1, the overhanging portion is likely to be deformed. Therefore, Patent Document 1 describes installing, for example, a triangular reinforcing member (so-called carrying member) on the leg frame to reinforce the base frame. However, when a triangular reinforcing member is installed on the leg frame, the effective use of the space at the installation portion of the triangular reinforcing member becomes impossible.

Means for Solving the Problems

[0005] The printing apparatus of the present invention for solving the above problems includes a printing unit that prints on a medium while moving in a moving direction, a platen that is provided at a position facing the printing unit in the printing range by the printing unit and supports the medium, a base frame that extends in the moving direction and supports the platen, and a pair of leg frames that support the base frame with a space therebetween in the moving direction. The base frame has an overhanging portion that protrudes outward from the leg frame in the moving direction, and the overhanging portion has a reinforcing portion where a plurality of sheet metals overlap when viewed from a direction intersecting the moving direction.

Brief Description of the Drawings

[0006]

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Embodiments for Carrying Out the Invention

[0007] First, the present invention will be schematically described. A printing apparatus according to a first aspect of the present invention for solving the above problems includes a printing unit that prints on a medium while moving in a moving direction, a platen that is provided at a position facing the printing unit in a printing range by the printing unit and supports the medium, a base frame that extends in the moving direction and supports the platen, and a pair of leg frames that support the base frame at intervals in the moving direction. The base frame has a protruding portion that protrudes outward from the leg frame in the moving direction, and the protruding portion has a reinforcing portion where a plurality of sheet metals overlap when viewed from a direction intersecting the moving direction.

[0008] According to this aspect, the protruding portion has a reinforcing portion where a plurality of sheet metals overlap when viewed from a direction intersecting the moving direction. By adopting such a configuration, it is possible to eliminate the need to provide new components around the leg frame, such as installing a reinforcing member on the leg frame. Therefore, the space such as the lower part of the protruding portion can be effectively utilized, and the base frame having the protruding portion can be reinforced.

[0009] A printing apparatus according to a second aspect of the present invention is an aspect subordinate to the first aspect, and is characterized in that the protruding portion has different shapes on the inner side and the outer side than the reinforcing portion in the moving direction.

[0010] According to this aspect, the protruding portion has different shapes on the inner side and the outer side than the reinforcing portion in the moving direction. By making the shape of the protruding portion different on the inner side and the outer side than the reinforcing portion in this way, the space can be effectively utilized efficiently according to the shape of other components.

[0011] The printing apparatus according to the third aspect of the present invention is an aspect subordinate to the second aspect, wherein the overhanging portion has a space shape that forms a space by being notched upward at the lower side outside the reinforcing portion in the moving direction.

[0012] According to this aspect, the overhanging portion has a space shape that forms a space by being notched upward at the lower side outside the reinforcing portion in the moving direction. Therefore, the space at the lower part of the overhanging portion can be widened, and the space can be effectively utilized particularly efficiently in accordance with the shape of other constituent members.

[0013] The printing apparatus according to the fourth aspect of the present invention is an aspect subordinate to any one of the first to third aspects, wherein the overhanging portion is configured by connecting a plurality of the sheet metals in the moving direction.

[0014] According to this aspect, the overhanging portion is configured by connecting a plurality of sheet metals in the moving direction. By adopting such a configuration, the reinforcing portion can be configured without increasing its size. Therefore, the space such as the lower part of the overhanging portion can be effectively utilized.

[0015] The printing apparatus according to the fifth aspect of the present invention is an aspect subordinate to any one of the first to third aspects, wherein the pair of leg frames are provided at positions sandwiching the platen when viewed from a direction intersecting the moving direction.

[0016] According to this aspect, the pair of leg frames are provided at positions sandwiching the platen when viewed from a direction intersecting the moving direction. By adopting such a configuration, the entire printing apparatus can be suitably supported by the pair of leg frames.

[0017] The printing apparatus according to the sixth aspect of the present invention is an aspect subordinate to any one of the first to third aspects, and includes a maintenance unit that performs maintenance on the printing unit, and the maintenance unit is characterized in that it is disposed on the protruding portion.

[0018] According to this aspect, the maintenance unit is disposed on the protruding portion. By adopting such a configuration, the space of the printing apparatus can be effectively utilized, and the enlargement of the printing apparatus can be suppressed.

[0019] The printing apparatus according to the seventh aspect of the present invention is an aspect subordinate to any one of the first to third aspects, and the protruding portion is characterized by having a plurality of the reinforcing portions.

[0020] According to this aspect, the protruding portion has a plurality of the reinforcing portions. Therefore, the base frame having the protruding portion can be effectively reinforced.

[0021] The printing apparatus according to the eighth aspect of the present invention is an aspect subordinate to the seventh aspect, and at least two of the reinforcing portions are characterized in that a plurality of the sheet metals overlap in different directions.

[0022] According to this aspect, at least two of the reinforcing portions are such that a plurality of the sheet metals overlap in different directions. By adopting such a configuration, it is possible to reinforce against stresses from a plurality of different directions and the like, and the base frame having the protruding portion can be particularly effectively reinforced.

[0023] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. First, an overview of a printing apparatus 1 according to an embodiment of the present invention will be described mainly with reference to FIG. 1. In FIG. 1, some constituent members are simplified and omitted for easier understanding of the configuration. Here, the X-axis direction in the figure is the horizontal direction and is the direction in which the support portion of the holding portion 2 that holds the roll body R1 in which the medium M is wound in a roll shape extends, the Y-axis direction is the horizontal direction and is the front-rear direction of the printing apparatus 1 and is a direction orthogonal to the X-axis direction, and the Z-axis direction is the vertical direction. Also, hereinafter, the direction in which the arrow points is the + direction, and the direction opposite to the direction in which the arrow points is the - direction. For example, the vertically upward direction is the +Z direction, the vertically downward direction is the -Z direction, the front of the printing apparatus 1 is the +Y direction, and the rear of the printing apparatus 1 is the -Y direction.

[0024] The printing apparatus 1 of the present embodiment includes a main body portion 9 having a base frame 100, which will be described in detail later, and leg frames 7 are attached near or inside the end portion in the X-axis direction of the main body portion 9. Further, the printing apparatus 1 of the present embodiment includes a holding portion 2 that holds a roll body R1 in which the medium M is wound in a roll shape on the -Y direction side, which is the rear side of the main body portion 9. The holding portion 2 serves as a feeding portion that feeds the medium M from the roll body R1 to the main body portion 9.

[0025] Then, in the printing apparatus 1 of the present embodiment, when the medium M is conveyed in the conveyance direction A, the holding portion 2 that serves as a rotation axis along the X-axis direction is rotated in the rotation direction C. The holding portion 2 is a member that is inserted into a paper tube that is the winding core of the roll body R1. Although the roll body R1 wound so that the image formation surface M1 on which an image is formed faces outward is used in FIG. 1, when a roll body R1 wound so that the image formation surface M1 faces inward is used, the holding portion 2 can rotate in the direction opposite to the rotation direction C to feed the medium M from the roll body R1.

[0026] In addition, the printing apparatus 1 of the present embodiment includes a conveyance path for the medium M including a medium support portion 3 that supports the medium M. The printing apparatus 1 of the present embodiment includes, as the medium support portion 3, an upstream medium support portion 3A, a platen 3B, and a downstream medium support portion 3C in the conveyance direction A from the upstream side to the downstream side. Further, the printing apparatus 1 includes a pair of rollers 8 including a driving roller and a driven roller as a conveyance unit for conveying the medium M in the conveyance direction A in the conveyance path. However, the configuration of the conveyance unit is not particularly limited.

[0027] In addition, the printing apparatus 1 of the present embodiment includes a head 5 as a printing unit provided with a plurality of nozzles at a position facing the platen 3B, for discharging ink from the nozzles to form an image, and a carriage 4 on which the head 5 is mounted and is reciprocally movable in the width direction B. In the printing apparatus 1 of the present embodiment, the conveyance direction A at the position facing the head 5 on the platen 3B is the +Y direction, the width direction B which is the moving direction of the head 5 is a direction along the X-axis direction, and the ink discharge direction is the -Z direction.

[0028] With the above configuration, the head 5 can form an image by discharging ink from nozzles (not shown) onto the conveyed medium M while reciprocally moving in the width direction B which is a direction intersecting the conveyance direction A. The printing apparatus 1 of the present embodiment can form a desired image on the medium M by repeating the steps of conveying the medium M in the conveyance direction A at a predetermined conveyance amount and discharging ink while moving the head 5 in the width direction B with the medium M stopped. As shown in FIG. 2, an ink supply unit 12 capable of mounting a plurality of ink cartridges for storing ink can be arranged on the -X direction side of the main body portion 9, and ink can be supplied from the ink cartridges mounted on the ink supply unit 12 to the head 5.

[0029] Further, a heater 20 is provided as a heating unit for heating the supported surface M2 on the side opposite to the image forming surface M1 of the medium M in the downstream-side medium support 3C of the medium support unit 3. The heater 20 of the present embodiment is composed of a heating wire or the like, but is not limited to such a configuration. Also, not only the downstream-side medium support unit 3C but also the upstream-side medium support unit 3A and the platen 3B may be provided with a medium heating unit for heating the supported surface M2 on the side opposite to the image forming surface M1 of the medium M.

[0030] Also, a blower unit 10 is provided at a portion facing the downstream-side medium support unit 3C in the conveyance path for drying the ink ejected from the head 5 onto the image forming surface M1 of the medium M by blowing an air flow F. The blower unit 10 of the present embodiment includes a fan 11 that generates the air flow F and is configured to be able to blow the gas as the air flow F onto the image forming surface M1 of the medium M, but is not limited to such a configuration.

[0031] Also, downstream of the downstream-side medium support unit 3C in the conveyance direction A, a holding unit 6 is provided as a winding unit for winding the medium M conveyed in the conveyance direction A into a roll shape to form a roll body R2. In the printing apparatus 1 of the present embodiment, the holding unit 2 and the holding unit 6 have the same configuration, and the holding unit 6 rotates in the rotation direction C. The holding unit 6 is a member for inserting a paper tube that is the winding core of the roll body R2. In FIG. 1, the holding unit 6 rotates in the rotation direction C so that the image forming surface M1 is wound to the outside, but the medium M may be wound so that the image forming surface M1 is on the inside. In that case, the holding unit 6 rotates in the direction opposite to the rotation direction C.

[0032] As described above, the printing apparatus 1 of the present embodiment includes a head 5 that prints on the medium M while moving in the width direction B, a platen 3B that is provided at a position facing the head 5 in the printing range by the head 5 and supports the medium M, a base frame 100 that supports the platen 3B, and a pair of leg frames 7 that support the base frame 100. Hereinafter, the details of the base frame 100, which is a main part of the printing apparatus 1 of the present embodiment, will be described with reference to FIGS. 2 to 13. Each of the base frames 100 is made of sheet metal.

[0033] Here, as shown in FIGS. 3 and 4, the base frame 100 extends in the width direction B. Also, as shown in FIGS. 3 and 4, the leg frame 7 is composed of a leg frame 7A and a leg frame 7B, and is configured to be able to support the base frame 100 with a space therebetween in the width direction B.

[0034] The base frame 100 is shown in FIGS. 3 to 10, has a surface on the +Y direction side and a surface on the -Z direction side, and includes a frame 101 that extends in the width direction B. Also, as shown in FIGS. 3 to 6, it includes a frame 102 that has a surface on the +Z direction side and extends in the width direction B and can be fixed to the frame 101. Also, as shown in FIGS. 7 to 11, it includes a frame 106 that has a surface on the -Y direction side and extends in the width direction B and can be fixed to the frame 101. Further, as shown in FIG. 7, a frame 108 is provided in the region surrounded by the frame 101, the frame 102, and the frame 106. The frame 101, the frame 102, the frame 106, and the frame 108 are arranged at a position on the -Z direction side of the platen 3B, that is, at the lower part of the platen 3B.

[0035] Frame 101, Frame 102, Frame 106, and Frame 108 partially project beyond the -X direction side of the leg frame 7A. As shown in FIGS. 4 to 10 and the like, on Frame 101 and Frame 106, a Frame 105 having a +Y direction side surface, a -Z direction side surface, and a -Y direction side surface is attached further on their -X direction side. Also, as shown in FIGS. 4 to 6, on the +Z direction side of Frame 105, a Frame 104 is provided which is attached to Frame 102 via Frame 103. The region where Frame 103 is arranged in the Z-axis direction corresponds to the region where Frame 102, Frame 103, and Frame 104 overlap in the Z-axis direction. Further, in the region surrounded by Frame 105 and Frame 104, a Frame 107 (Frame 107A and Frame 107B) is provided. As shown in FIG. 9, Frame 107 is attached to Frame 105 and is also attached to Frame 101 via Frame 109 (Frame 109A and Frame 109B).

[0036] In this way, the base frame 100 projects beyond the leg frame 7A on the outside in the width direction B, and the region that projects beyond the leg frame 7A on the outside in the width direction B is defined as the projecting portion 110. In the projecting portion 110, as described above, Frame 101 and Frame 105 are attached, and as shown in FIGS. 5 to 10, a part of Frame 101 and Frame 105 overlap in the Y-axis direction. And the region where a part of Frame 101 and Frame 105 overlap in the Y-axis direction constitutes a reinforcing portion 120 (reinforcing portion 120A).

[0037] Also, in the protruding portion 110, as shown in FIGS. 4 to 6, etc., the frame 102, the frame 103, and the frame 104 are attached. However, the frame 102, the frame 103, and the frame 104 are stacked in the Z-axis direction in the region where the frame 103 is arranged. And the region where the frame 102, the frame 103, and the frame 104 corresponding to the region where the frame 103 is arranged are stacked in the Z-axis direction constitutes a reinforcing portion 120 (reinforcing portion 120B).

[0038] Also, in the protruding portion 110, as shown in FIG. 9, etc., the frame 105 and the frame 107 are attached, and the frame 107 and the frame 101 are attached via the frame 109. Specifically, a part of the frame 105 and a part of the frame 107 are stacked in the Z-axis direction, and a part of the frame 107 and a part of the frame 101 are stacked in the Z-axis direction via the frame 109. And the region where a part of the frame 105 and a part of the frame 107 are stacked in the Z-axis direction, and the region where a part of the frame 107 and a part of the frame 101 are stacked in the Z-axis direction via the frame 109 constitute a reinforcing portion 120 (reinforcing portion 120C).

[0039] Furthermore, in the protruding portion 110, as shown in FIGS. 9 to 11, the frame 106 and the frame 105 are attached. However, a part of the frame 106 and a part of the frame 105 are stacked in the Y-axis direction. And the region where a part of the frame 106 and a part of the frame 105 are stacked in the Y-axis direction constitutes a reinforcing portion 120 (reinforcing portion 120D).

[0040] As described above, the base frame 100 in the printing apparatus 1 of the present embodiment has an overhanging portion 110 that protrudes outward from the leg frame 7A in the width direction B, which is the moving direction of the head 5. The overhanging portion 110 has a reinforcing portion 120 where a plurality of sheet metals overlap when viewed from the Y-axis direction or the Z-axis direction, which is a direction intersecting the width direction B corresponding to the X-axis direction. Each frame constituting the base frame 100 is formed of a single sheet metal that is not joined from end to end in the width direction B, and other sheet metals may be stacked on the reinforcing portion 120.

[0041] With such a configuration, the printing apparatus 1 of the present embodiment can eliminate the need to provide new component members around the leg frame 7, such as installing a reinforcing material on the leg frame 7. Therefore, the printing apparatus 1 of the present embodiment can effectively utilize the space such as the lower part of the overhanging portion 110 and can reinforce the base frame 100 having the overhanging portion 110. Specifically, the base frame 100 is reinforced by the reinforcing portion 120, and the ink supply unit 12 can be arranged at the lower part of the overhanging portion 110 as shown in FIGS. 2 and 13.

[0042] Also, as described above, in the printing apparatus 1 of the present embodiment, the overhanging portion 110 has a plurality of reinforcing portions 120, namely, a reinforcing portion 120A, a reinforcing portion 120B, a reinforcing portion 120C, and a reinforcing portion 120D. Therefore, the printing apparatus 1 of the present embodiment can effectively reinforce the base frame 100 having the overhanging portion 110 by the plurality of reinforcing portions 120.

[0043] More specifically, as described above, in the printing apparatus 1 of this embodiment, among the reinforcing portions 120, the reinforcing portions 120A and 120D are configured such that a plurality of sheet metals overlap in the Y-axis direction, and the reinforcing portions 120B and 120C among the reinforcing portions 120 are configured such that a plurality of sheet metals overlap in the Z-axis direction. In this way, it is particularly preferable that at least two of the reinforcing portions 120 are configured such that a plurality of sheet metals overlap in different directions. By adopting such a configuration, it is possible to reinforce against stresses from different directions, and it is possible to particularly effectively reinforce the base frame 100 having the overhanging portion 110.

[0044] Also, from another perspective, in the printing apparatus 1 of this embodiment, the overhanging portion 110 is configured by connecting a plurality of frames constituting the base frame 100 in the width direction B. In other words, it is configured by connecting a plurality of sheet metals in the width direction B. By adopting such a configuration, it is possible to configure the reinforcing portion 120 without increasing its size. Therefore, as described above, the printing apparatus 1 of this embodiment can effectively utilize the space such as the lower part of the overhanging portion 110.

[0045] Also, as shown in FIG. 2, in the printing apparatus 1 of this embodiment, the pair of leg frames 7 are provided at positions sandwiching the platen 3B when viewed from a direction intersecting the width direction B. By adopting such a configuration, the printing apparatus 1 of this embodiment can suitably support the entire printing apparatus 1 with the pair of leg frames 7.

[0046] Also, as shown in FIGS. 3 and 13, the printing apparatus 1 of this embodiment includes a maintenance portion 13 for performing maintenance on the head 5. And the maintenance portion 13 is arranged on the overhanging portion 110. By adopting such a configuration, the printing apparatus 1 of this embodiment can effectively utilize the space of the printing apparatus 1 and can suppress the increase in size of the printing apparatus 1. Note that the configuration of the maintenance portion 13 is not particularly limited, but a configuration provided with a suction mechanism, a wiping mechanism, etc. can be preferably used.

[0047] Further, as shown in FIGS. 5 to 10, in the printing apparatus 1 of the present embodiment, the overhanging portion 110 has different shapes on the inner side (+X direction side) and the outer side (-X direction side) of the reinforcing portion 120A in the width direction B. Although the shape of the overhanging portion 110 is not particularly limited, by making the shape of the overhanging portion 110 different between the inner side and the outer side of the reinforcing portion 120A in this way, the space can be effectively utilized efficiently in accordance with the shapes of other constituent members.

[0048] More specifically, as shown in FIGS. 5 to 10, in the printing apparatus 1 of the present embodiment, the overhanging portion 110 has a space shape 110A that forms a space by having the lower side (-Z direction side) cut out upward (+Z direction) on the outer side (-X direction side) of the reinforcing portion 120A in the width direction B. For this reason, the printing apparatus 1 of the present embodiment can secure a wide space at the lower part of the overhanging portion 110, and can particularly efficiently utilize the space in accordance with the shapes of other constituent members. Specifically, as shown in FIG. 13, the ink supply unit 12 can be efficiently arranged in the space at the lower part of the overhanging portion 110. If the configuration does not have the space shape 110A, the height of the entire printing apparatus 1 has to be increased to arrange the ink supply unit 12, leading to an increase in the size of the apparatus and an inefficient arrangement.

[0049] In the present embodiment, the shape of the overhanging portion 110 is formed along the outer shape of the ink supply unit 12. Therefore, when the ink supply unit 12 is arranged at the position where it is used with respect to the printing apparatus 1, as shown in FIG. 2, it fits within the installation range of the printing apparatus 1, and the efficiency of the installation space is also good. Further, since the shape of the overhanging portion 110 follows the outer shape of the ink supply unit 12, a sense of unity is felt in terms of design, and a visual stability is also generated. Even if the shape of the overhanging portion 110 is not formed along the outer shape of the ink supply unit 12, as long as the ink supply unit 12 fits in the space at the lower part of the overhanging portion 110, it is effective in terms of the efficiency of the installation space.

[0050] The present invention is not limited to the above-described embodiments, and can be implemented in various configurations without departing from the gist thereof. Also, the technical features in the embodiments corresponding to the technical features in each form described in the summary of the invention can be appropriately replaced or combined in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. Further, if the technical feature is not described as essential in this specification, it can be appropriately deleted.

Explanation of Signs

[0051] 1... Printing device, 2... Holding part, 3... Medium support part, 3A... Upstream medium support part, 3B... Platen, 3C... Downstream medium support part, 4... Carriage, 5... Head (printing part), 6... Holding part, 7... Leg frame, 7A... Leg frame, 7B... Leg frame, 8... Roller pair, 9... Main body part, 10... Air blowing part, 11... Fan, 12... Ink supply unit, 13... Maintenance part, 20... Heater, 100..., 101... Frame, 102... Frame, 103... Frame, 104... Frame, 105... Frame, 106... Frame, 107... Frame, 107A... Frame, 107B... Frame, 108... Frame, 109... Frame, 109A... Frame, 109B... Frame, 110... Protruding part, 110A... Space shape, 120... Reinforcing part, 120A... Reinforcing part, 120B... Reinforcing part, 120C... Reinforcing part, 120D... Reinforcing part, F... Airflow, M... Medium, M1... Image forming surface, M2... Supported surface, R1... Roll body, R2... Roll body

Claims

1. A printing unit that prints on a medium while moving in a moving direction; A platen that is provided at a position facing the printing unit within the printing range by the printing unit and supports the medium; A base frame that extends in the moving direction and supports the platen; A pair of leg frames that support the base frame at intervals in the moving direction; Comprising; The base frame has an overhanging portion that overhangs outward from the leg frame in the moving direction; The printing apparatus, wherein the overhanging portion has a reinforcing portion where a plurality of sheet metals overlap when viewed from a direction intersecting the moving direction.

2. In the printing apparatus according to Claim 1, The printing apparatus, wherein the overhanging portion has different shapes on the inner side and the outer side than the reinforcing portion in the moving direction.

3. In the printing apparatus according to Claim 2, The printing apparatus, wherein the overhanging portion has a space shape that forms a space by having the lower side notched upward on the outer side than the reinforcing portion in the moving direction.

4. In the printing apparatus according to any one of Claims 1 to 3, The printing apparatus, wherein the overhanging portion is configured by connecting a plurality of the sheet metals in the moving direction.

5. In the printing apparatus according to any one of Claims 1 to 3, The printing apparatus, wherein the pair of leg frames are provided at positions sandwiching the platen when viewed from a direction intersecting the moving direction.

6. In the printing apparatus according to any one of Claims 1 to 3, Comprising a maintenance unit for performing maintenance on the printing unit, The printing apparatus, wherein the maintenance unit is disposed in the overhanging portion.

7. In the printing apparatus according to any one of Claims 1 to 3, The printing apparatus, wherein the overhanging portion has a plurality of the reinforcing portions.

8. In the printing apparatus according to Claim 7, The printing apparatus, wherein at least two of the reinforcing portions have a plurality of the sheet metals overlapping in different directions.

Images