Reservoir and inkjet printing apparatus including same

Abstract

The utility model provides a storage device and an ink-jet printing device comprising the storage device. The reservoir includes: a main body portion defining an accommodating space for accommodating ink; a negative pressure forming member connected to the main body portion and providing negative pressure to the accommodation space; a cooling member disposed inside the accommodation space; and a guide pattern disposed on the first surface of the cooling member and inclined toward the side surface of the main body portion.

Description

Technical Field

[0001] The utility model relates to a reservoir and an inkjet printing device comprising the same. More specifically, the utility model relates to a reservoir comprising a cooling component and an inkjet printing device comprising the same. Background Art

[0002] The inkjet printing device can be used to form an alignment film or apply UV ink on a substrate in the process of manufacturing a liquid crystal display device, or to apply ink on a substrate in the process of manufacturing an organic light-emitting display device.

[0003] The inkjet printing device may include an inkjet head including a nozzle portion for ejecting ink; and a reservoir having a space for storing the ink supplied to the inkjet head. Utility Model Content

[0004] An object of the present invention is to provide a reservoir including a cooling member that liquefies the vaporized ink in order to prevent the vaporized ink from being discharged to the outside of the main body.

[0005] Another object of the present invention is to provide an inkjet printing device comprising the reservoir.

[0006] However, the purpose of the present invention is not limited to the above purpose, and various extensions can be made without departing from the scope of the concept and field of the present invention.

[0007] In order to achieve one of the aforementioned purposes of the present invention, a reservoir according to one embodiment of the present invention may include: a main body, which defines a receiving space for receiving ink; a negative pressure forming component, which is connected to the main body and provides negative pressure to the receiving space; a cooling component, which is arranged inside the receiving space; and a guide pattern, which is arranged on a first surface of the cooling component and is inclined toward the side of the main body.

[0008] In one embodiment, the first surface of the cooling member may be a surface facing the ink, and the second surface of the cooling member opposite to the first surface may be a surface facing the negative pressure forming member.

[0009] In one embodiment, the cooling member may be disposed between the ink and the negative pressure forming member.

[0010] In one embodiment, the negative pressure forming component may be connected to the main body via a through hole defined on the upper surface of the main body, and the cooling component may be separated from the through hole.

[0011] In one embodiment, the cooling component may be in contact with the side surface of the main body.

[0012] In one embodiment, when a portion of the ink vaporizes and moves toward the negative pressure generating member, the cooling member may liquefy the vaporized ink.

[0013] In one embodiment, the guide pattern may guide the liquefied ink to move toward the side surface of the main body.

[0014] In one embodiment, the cooling member may include: a first cooling member in contact with a first side surface of the main body; and a second cooling member in contact with a second side surface of the main body facing the first side surface. Alternatively, the guide pattern may include: a first guide pattern disposed on a first surface of the first cooling member and inclined toward the first side surface of the main body; and a second guide pattern disposed on a first surface of the second cooling member and inclined toward the second side surface of the main body.

[0015] In one embodiment, the first surface of the first cooling member and the first surface of the second cooling member may be surfaces facing the ink.

[0016] In one embodiment, the first cooling component may be separated from the second side surface of the main body, and the second cooling component may be separated from the first side surface of the main body.

[0017] In one embodiment, the first cooling component and the second cooling component may partially overlap on a plane.

[0018] In one embodiment, the area separated from the first cooling part and the second side surface of the main body may overlap with the second cooling part in a plane, and the area separated from the second cooling part and the first side surface of the main body may overlap with the first cooling part in a plane.

[0019] In one embodiment, the first cooling part and the second cooling part may be separated from each other.

[0020] In one embodiment, each of the first cooling member and the second cooling member may be arranged between the ink and the negative pressure forming member, and the first cooling member and the second cooling member may be alternately arranged along a direction.

[0021] In order to achieve one of the aforementioned purposes of the present invention, an inkjet printing device according to one embodiment of the present invention may include: a nozzle portion, which sprays ink onto a substrate; a reservoir, which provides the ink to the nozzle portion, and the reservoir includes: a main body portion, which defines a receiving space for receiving the ink; a negative pressure forming component, which is connected to the main body portion and provides negative pressure to the receiving space; a cooling component, which is arranged inside the receiving space; and a guide pattern, which is arranged on a first surface of the cooling component and is inclined toward the side of the main body portion.

[0022] In one embodiment, the first surface of the cooling member may face the ink in the receiving space, and the second surface of the cooling member opposite to the first surface may face the negative pressure forming member.

[0023] In one embodiment, the cooling member may be disposed between the ink in the receiving space and the negative pressure forming member.

[0024] In one embodiment, the cooling component may be in contact with the side surface of the main body.

[0025] In one embodiment, when a portion of the ink in the storage space vaporizes and moves toward the negative pressure generating member, the cooling member may liquefy the vaporized ink.

[0026] In one embodiment, the guide pattern may guide the liquefied ink to move toward the side surface of the main body.

[0027] It can be that the storage according to one embodiment of the present invention includes: a main body, which defines a receiving space for receiving ink; a negative pressure forming component, which is connected to the main body and provides negative pressure to the receiving space; a cooling component, which is arranged inside the receiving space; and a guide pattern, which is arranged on a first surface of the cooling component and inclined toward the side of the main body.

[0028] The cooling member may be disposed between the ink and the negative pressure generating member. If a portion of the ink in the storage space vaporizes and moves toward the negative pressure generating member, the cooling member may liquefy the vaporized ink. This prevents the vaporized ink from being discharged outside the main body. As a result, the composition ratio and properties of the ink in the storage space can be maintained constant.

[0029] The first surface of the cooling member on which the guide pattern is disposed may be directed toward the ink within the receiving space. The guide pattern may guide the ink liquefied by the cooling member toward the side surface of the main body. This allows the liquefied ink to move toward the side surface of the main body and flow down along the side surface of the main body. As a result, the formation of bubbles in the ink within the receiving space can be reduced.

[0030] However, the effects of the present invention are not limited to the aforementioned effects, and various extensions can be made without departing from the scope of the concept and field of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 3D is a perspective view showing an inkjet printing device according to an embodiment of the present invention.

[0032] Figure 2 It shows Figure 1 A plan view of an inkjet printing device.

[0033] Figure 3 It shows Figure 1 Cross-sectional view of an inkjet printing device.

[0034] Figure 4 It shows Figure 3 A three-dimensional diagram of the storage device.

[0035] Figure 5 is shown in the included Figure 3 Diagram of the ink movement path inside the main body of the reservoir.

[0036] Figure 6 It is enlarged to show Figure 5 Figure 1 shows the “A” area of ​​the image.

[0037] Figure 7 is a cross-sectional view showing an inkjet printing device according to another embodiment of the present invention.

[0038] Figure 8 It shows Figure 7 A three-dimensional diagram of the storage device.

[0039] (Explanation of Reference Numerals)

[0040] 10, 20: Storage IPA, IPA': Inkjet printing device

[0041] 100: Main body IK: Ink

[0042] S: Accommodation space 200: Negative pressure forming component

[0043] 300, 300': cooling component 400: guide pattern

[0044] 100-S: Side of the main body 100-T: Top of the main body

[0045] 100-B: Bottom of the main body PH1: First through hole

[0046] PH2: Second through hole PH3: Third through hole

[0047] IKG: Gasified ink IKL: Liquefied ink

[0048] 310, 310': first cooling part 320, 320': second cooling part

[0049] 100-S1: The first side of the main body 100-S2: The second side of the main body

[0050] 410: First guide pattern 420: Second guide pattern

[0051] NZ: Nozzle unit SUB: Substrate

[0052] SUP: Supply Department DETAILED DESCRIPTION

[0053] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. Identical components in the accompanying drawings are denoted by the same reference numerals, and repeated descriptions of the same components are omitted. The present invention can be implemented in various forms and is not limited to the embodiments described herein.

[0054] Figure 1 3D is a perspective view showing an inkjet printing device according to an embodiment of the present invention. Figure 2 It shows Figure 1 A plan view of an inkjet printing device.

[0055] In this specification, a plane may be defined by a first direction DR1 and a second direction DR2 intersecting the first direction DR1. For example, the first direction DR1 and the second direction DR2 may be perpendicular to each other. A normal direction to the plane may be a third direction DR3. In other words, the third direction DR3 may be perpendicular to both the first direction DR1 and the second direction DR2.

[0056] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, the inkjet printing apparatus IPA may include a workbench STG, an inkjet head HD, a stage GAN, a guide portion GD, a cleaning device CLA, and a reservoir (eg, Figure 3The inkjet printing apparatus IPA can be used to form an alignment film or apply UV ink on a substrate SUB during the process of manufacturing a liquid crystal display device. Furthermore, the inkjet printing apparatus IPA can be used to apply ink on a substrate SUB during the process of manufacturing an organic light-emitting display device.

[0057] The workbench STG may include a flat top. A substrate SUB may be loaded on the workbench STG. A plurality of air holes AIH may be formed on the top of the workbench STG. The air holes AIH may be holes that penetrate the workbench STG in the thickness direction (or the third direction DR3). The air holes AIH may be formed integrally on the top of the workbench STG. For example, the air holes AIH may be repeatedly arranged along the first direction DR1 and the second direction DR2. Air ejected from the air holes AIH toward the substrate SUB may cause the substrate SUB to float. Thus, the substrate SUB may be separated from the workbench STG by a predetermined distance and float.

[0058] The substrate SUB may include a transparent substance or an opaque substance. The substrate SUB may be formed of a transparent resin substrate. As an example of the transparent resin substrate, it may be a polyimide substrate or the like. In this case, the polyimide substrate may include a first organic layer, a first barrier layer, a second organic layer, etc. Optionally, the substrate SUB may also include a quartz substrate, a synthetic quartz substrate, a calcium fluoride substrate, a fluorine-doped quartz (F-doped quartz) substrate, a sodalime glass substrate, a non-alkali glass substrate, etc. These may be used alone or in combination with each other.

[0059] The stage GAN can be located on the workbench STG. The stage GAN defines a space in which the inkjet head HD can be placed. The stage GAN can move the inkjet head HD in a first direction DR1 or a direction opposite to the first direction DR1. Thus, the stage GAN can move the inkjet head HD toward the cleaning device CLA.

[0060] An inkjet head HD can be positioned on the stage STG. The inkjet head HD can include a plurality of nozzle units NZ that can eject ink. The nozzle units NZ can be arranged in a row along a direction. For example, the nozzle units NZ can be arranged in a row along a second direction DR2. The inkjet head HD can be positioned in the space of the stage GAN and can move in the second direction DR2 or a direction opposite to the second direction DR2.

[0061] Each of the nozzle portions NZ can eject the ink. The ink can be a liquid comprising various substances. For example, the ink can be an organic light-emitting ink for forming pixels included in a display device. In this case, the organic light-emitting ink can be an ink obtained by mixing an organic light-emitting substance and a solvent. The organic light-emitting substance can be a red organic light-emitting substance, a green organic light-emitting substance, or a blue organic light-emitting substance, and can emit light (e.g., red light, green light, or blue light, etc.) by receiving a voltage. The solvent, as a substance that can dissolve the organic light-emitting substance, can be a substance that can be easily mixed with the organic light-emitting substance.

[0062] The guide portion GD can be located on the side of the worktable STG. The guide portion GD can move the substrate SUB in the first direction DR1 or in a direction opposite to the first direction DR1. For example, the guide portion GD can move in the first direction DR1 or in a direction opposite to the first direction DR1 while holding the substrate SUB. In this way, the guide portion GD can move the substrate SUB toward the inkjet head HD.

[0063] like Figure 2 As shown, the cleaning device CLA may be located on one side of the work stage STG. For example, the cleaning device CLA and the work stage STG may be adjacent to each other in the first direction DR1. The cleaning device CLA may clean foreign matter adsorbed on the nozzle portion NZ.

[0064] exist Figure 1 and Figure 2 Although not shown, the reservoir may be located on the inkjet head HD. The reservoir may provide the ink to the nozzle portion NZ. The reservoir may include: a main body (eg Figure 3 The main body 100 defines a receiving space for receiving the ink; a cooling component (e.g. Figure 3 The cooling member 300 is disposed inside the receiving space; and the guide pattern (eg Figure 3 The guide pattern 400 is arranged on the first surface of the cooling component and is inclined toward the side of the main body. Figure 3 This will be described later.

[0065] Figure 3 It shows Figure 1 Specifically, Figure 3 is a cross-sectional view showing the reservoir 10 included in the inkjet printing apparatus IPA. Figure 4 It shows Figure 3 A three-dimensional diagram of the storage device.

[0066] Reference Figure 3 and Figure 4The inkjet printing apparatus IPA according to an embodiment of the present invention may include a supply unit SUP, a reservoir 10 and an inkjet head HD. The reservoir 10 may include a main body 100, a negative pressure forming member 200, a cooling member 300 and a guide pattern 400.

[0067] The main body 100 may define a receiving space S for receiving the ink IK. For example, the main body 100 may have a rectangular parallelepiped shape, but the present invention is not limited thereto.

[0068] A first through hole PH1 may be defined on the upper surface 100-T of the main body 100. The upper surface 100-T of the main body 100 may be connected to the supply portion SUP via the first through hole PH1. However, the present invention is not limited thereto, and the first through hole PH1 may be defined on the side surface 100-S of the main body 100, and the supply portion SUP may also be connected to the side surface 100-S of the main body 100 via the first through hole PH1. Thus, the supply portion SUP may be connected to the receiving space S of the main body 100. Specifically, the supply portion SUP may include a supply pipe IP and a storage reservoir STO. One end of the supply pipe IP may be connected to the main body 100 via the first through hole PH1. The other end of the supply pipe IP may be connected to the storage reservoir STO. The ink IK stored in the storage reservoir STO may be provided to the receiving space S of the main body 100 via the supply pipe IP and the first through hole PH1.

[0069] A second through hole PH2 may be defined at the bottom 100-B of the main body 100. The bottom 100-B of the main body 100 may be connected to the nozzle unit NZ through the second through hole PH2. The main body 100 may supply ink IK to the nozzle unit NZ through the second through hole PH2. Specifically, the main body 100 may be connected to the inkjet head HD through the ejection pipe OP. One end of the ejection pipe OP may be connected to the bottom 100-B of the main body 100 through the second through hole PH2. The other end of the ejection pipe OP may be connected to the inkjet head HD. The ink IK accommodated in the accommodation space S may be supplied from the main body 100 to the inkjet head HD through the second through hole PH2 and the ejection pipe OP. The inkjet head HD may supply ink IK to each of the nozzle units NZ.

[0070] A third through hole PH3 may be defined on the upper surface 100-T of the main body 100. The third through hole PH3 may be separated from the first through hole PH1. The upper surface 100-T of the main body 100 may be connected to the negative pressure forming component 200 through the third through hole PH3. Specifically, the negative pressure forming component 200 may include a negative pressure pipe VP and a decompression component PDU. One end of the negative pressure pipe VP may be connected to the upper surface 100-T of the main body 100 through the third through hole PH3. The other end of the negative pressure pipe VP may be connected to the decompression component PDU. The negative pressure generated by the decompression component PDU may be provided to the accommodating space S of the main body 100 through the negative pressure pipe VP and the third through hole PH3.

[0071] The cooling member 300 can be arranged inside the receiving space S. Specifically, the cooling member 300 can be arranged between the ink IK located in the receiving space S and the negative pressure forming member 200. The cooling member 300 can be separated from the third through hole PH3 connected to the negative pressure forming member 200. The cooling member 300 can extend in the second direction DR2. The cooling member 300 can contact the side surface 100-S of the main body 100. Specifically, the cooling member 300 can contact the first side surface 100-S1 of the main body 100 or the second side surface 100-S2 of the main body 100. The first side surface 100-S1 of the main body 100 and the second side surface 100-S2 of the main body 100 can face each other. For example, the first side surface 100-S1 can be the left side surface of the main body 100, and the second side surface 100-S2 can be the right side surface of the main body 100.

[0072] For example, the cooling member 300 may include a Peltier element as a cooling device. When the ink IK is vaporized and moves toward the negative pressure forming member 200, the cooling member 300 may cool the vaporized ink (eg Figure 5 The vaporized ink IKG) is liquefied. For a detailed description of this, please refer to Figure 5 and Figure 6 This will be described later.

[0073] In one embodiment, a plurality of cooling members 300 may be provided, and the cooling members 300 may be spaced apart from each other in the third direction DR3. Alternatively, a portion of the cooling members 300 may contact the first side surface 100-S1 of the main body 100, and another portion of the cooling members 300 may contact the second side surface 100-S2 of the main body 100.

[0074] In one embodiment, the cooling member 300 may include a first cooling member 310 and a second cooling member 320. The first cooling member 310 may be in contact with the first side surface 100-S1 of the main body 100 and spaced apart from the second side surface 100-S2 of the main body 100. The second cooling member 320 may be in contact with the second side surface 100-S2 of the main body 100 and spaced apart from the first side surface 100-S1 of the main body 100. The first cooling member 310 and the second cooling member 320 may be spaced apart from each other in the third direction DR3.

[0075] In one embodiment, the first cooling member 310 and the second cooling member 320 may be arranged alternately along a direction. For example, the first cooling member 310 and the second cooling member 320 may be arranged alternately along the third direction DR3. However, the arrangement order of the first cooling member 310 and the second cooling member 320 is not limited to this. As another example, the first cooling member 310, the first cooling member 310, the second cooling member 320, and the second cooling member 320 may be arranged in this order along the third direction DR3.

[0076] In one embodiment, the first cooling member 310 and the second cooling member 320 may partially overlap on a plane. Figure 4 As shown, the area separated from the first cooling member 310 and the second side surface 100-S2 of the main body 100 can overlap with the second cooling member 320 in a planar manner. Furthermore, the area separated from the second cooling member 320 and the first side surface 100-S1 of the main body 100 can overlap with the first cooling member 310 in a planar manner. For example, the ink IK contained in the receiving space S of the main body 100 can overlap with at least the first cooling member 310 or the second cooling member 320 in a planar manner. In other words, the entire area of ​​the receiving space S of the main body 100 can overlap with at least the first cooling member 310 or the second cooling member 320 in a planar manner.

[0077] In one embodiment, the first cooling member 310 and the second cooling member 320 may also be provided in the same number. Figure 3 As shown, two first cooling members 310 and two second cooling members 320 may be disposed inside the accommodation space S. However, the present invention is not limited thereto, and the first cooling members 310 and the second cooling members 320 may be provided in various numbers.

[0078] In another embodiment, the first cooling member 310 and the second cooling member 320 may be provided in different numbers. For example, three first cooling members 310 and one second cooling member 320 may be disposed within the receiving space S. As another example, one first cooling member 310 and three second cooling members 320 may be disposed within the receiving space S.

[0079] The guide pattern 400 may be disposed on a first surface of the cooling member 300. Here, the first surface of the cooling member 300 is the surface facing the ink IK in the storage space S, and the second surface of the cooling member 300, opposite to the first surface, may be the surface facing the negative pressure generating member 200. In other words, the guide pattern 400 may extend from the first surface of the cooling member 300 toward the ink IK in the storage space S.

[0080] The guide pattern 400 may be inclined toward the side surface 100-S of the main body 100. In other words, the guide pattern 400 may extend from the first surface of the cooling member 300 toward the side surface 100-S of the main body 100. Specifically, the guide pattern 400 may be inclined toward the first side surface 100-S1 of the main body 100 or the second side surface 100-S2 of the main body 100. In other words, the guide pattern 400 may extend from the first surface of the cooling member 300 toward the first side surface 100-S1 of the main body 100 or the second side surface 100-S2 of the main body 100.

[0081] The guide pattern 400 may be inclined toward the side surface 100-S of the main body 100 that contacts the cooling member 300. For example, when the cooling member 300 contacts the first side surface 100-S1 of the main body 100, the guide pattern 400 disposed on the first surface of the cooling member 300 may be inclined toward the first side surface 100-S1 of the main body 100. As another example, when the cooling member 300 contacts the second side surface 100-S2 of the main body 100, the guide pattern 400 disposed on the first surface of the cooling member 300 may be inclined toward the second side surface 100-S2 of the main body 100.

[0082] The guide pattern 400 may guide the ink (eg, Figure 5 The liquefied ink IKL) moves toward the side surface 100-S of the main body 100. Figure 5 and Figure 6 This will be described later.

[0083] In one embodiment, a plurality of guide patterns 400 may be provided, each of the guide patterns 400 is disposed on the first surface of the cooling member 300 , and the guide patterns 400 may be spaced apart from each other in the second direction DR2 .

[0084] In one embodiment, the guide pattern 400 may include a first guide pattern 410 and a second guide pattern 420. The first guide pattern 410 may be disposed on the first surface of the first cooling member 310 and inclined toward the first side surface 100-S1 of the main body 100. The second guide pattern 420 may be disposed on the first surface of the second cooling member 320 and inclined toward the second side surface 100-S2 of the main body 100. In this case, the first surface of the first cooling member 310 and the first surface of the second cooling member 320 may be surfaces facing the ink IK in the receiving space S.

[0085] In one embodiment, a plurality of first guide patterns 410 may be provided, each of which is disposed on the first surface of the first cooling member 310, and the first guide patterns 410 may be spaced apart from each other in the second direction DR2. Furthermore, a plurality of second guide patterns 420 may be provided, each of which is disposed on the first surface of the second cooling member 320, and the second guide patterns 420 may be spaced apart from each other in the second direction DR2.

[0086] Figure 5 is shown in the included Figure 3 Diagram of the ink movement path inside the main body of the reservoir. Figure 6 It is enlarged to show Figure 5 Figure 1 shows the “A” area of ​​the image.

[0087] Reference Figure 5 and Figure 6 , a portion of the ink IK in the accommodation space S can be vaporized (or volatilized). For example, when the ink IK includes a first component and a second component different from the first component, a portion of the first component and a portion of the second component can be vaporized (or volatilized). When a first vapor pressure (vapor pressure) of the first component is greater than a second vapor pressure of the second component, the amount of the first component vaporized can be greater than the amount of the second component vaporized.

[0088] The vaporized ink IKG can move toward the negative pressure generating member 200 due to the negative pressure provided by the negative pressure generating member 200. In this case, the vaporized ink IKG may be discharged outside the main body 100 through the third through-hole PH3 and the negative pressure pipe VP. When the vaporized ink IKG is discharged outside the main body 100, the first component, which vaporizes in a relatively large amount, may be discharged in greater quantities than the second component. This may cause changes in the composition ratio of the ink IK in the storage space S, leading to changes in the properties of the ink IK.

[0089] To prevent vaporized ink IKG from being discharged outside the main body 100, the reservoir 10 according to one embodiment of the present invention may include a cooling member 300 disposed between the ink IK located in the storage space S and the negative pressure generating member 200. Specifically, the cooling member 300 may be disposed in the path along which the vaporized ink IKG moves toward the negative pressure generating member 200. If the vaporized ink IKG contacts the surface of the cooling member 300, the cooling member 300 may liquefy the vaporized ink IKG. The liquefied ink IKL generated by the cooling member 300 may then move toward the ink IK located in the storage space S. This prevents the vaporized ink IKG from being discharged outside the main body 100, and maintains a constant composition ratio and performance of the ink IK located in the storage space S.

[0090] However, when the ink IKL liquefied by the cooling member 300 vertically drops from the surface of the cooling member 300 toward the ink IK in the receiving space S, bubbles are generated in the ink IK in the receiving space S. When the ink IK containing the bubbles is supplied to the nozzle portion NZ, the nozzle portion NZ may be clogged with the ink IK, and the ink IK may not be ejected from the nozzle portion NZ.

[0091] To reduce the generation of bubbles in the ink IK within the storage space S, the reservoir 10 according to one embodiment of the present invention may include a cooling member 300 in contact with the side surface 100-S of the main body 100, and a guide pattern 400 disposed on the first surface of the cooling member 300 and inclined toward the side surface 100-S of the main body 100. The first surface of the cooling member 300 may be the surface facing the ink IK within the storage space S. The guide pattern 400 may guide the ink IKL liquefied by the cooling member 300 toward the side surface 100-S of the main body 100. As a result, the liquefied ink IKL moves toward the side surface 100-S of the main body 100 via the guide pattern 400 and can flow down along the side surface 100-S of the main body 100. Guiding the ink IKL liquefied by the cooling member 300 to flow down along the side surface 100-S of the main body 100 reduces the generation of bubbles in the ink IK within the storage space S.

[0092] For example, Figure 5 and Figure 6As shown, the cooling member 300 may include a first cooling member 310 in contact with the first side surface 100-S1 of the main body 100 and a second cooling member 320 in contact with the second side surface 100-S2 of the main body 100. The first cooling member 310 may be spaced apart from the second side surface 100-S2 of the main body 100, and the second cooling member 320 may be spaced apart from the first side surface 100-S1 of the main body 100. In this case, the first side surface 100-S1 may be the left side surface of the main body 100, and the second side surface 100-S2 may be the right side surface of the main body 100.

[0093] The guide pattern 400 may include a first guide pattern 410 and a second guide pattern 420. The first guide pattern 410 may be disposed on the first surface of the first cooling member 310 and inclined toward the first side surface 100-S1 of the main body 100. The second guide pattern 420 may be disposed on the first surface of the second cooling member 320 and inclined toward the second side surface 100-S2 of the main body 100.

[0094] When the vaporized ink IKG contacts the surface of the first cooling member 310, the first cooling member 310 can liquefy the vaporized ink IKG. The first guide pattern 410 disposed on the first surface of the first cooling member 310 allows the liquefied ink IKL to move toward the first side surface 100-S1 of the main body 100 and flow down along the first side surface 100-S1 of the main body 100.

[0095] like Figure 6 As shown, if the vaporized ink IKG contacts the surface of the second cooling member 320, the second cooling member 320 can liquefy the vaporized ink IKG. The second guide pattern 420 disposed on the first surface of the second cooling member 320 allows the liquefied ink IKL to move toward the second side surface 100-S2 of the main body 100 and flow down along the second side surface 100-S2 of the main body 100.

[0096] In one embodiment, the first cooling member 310 in contact with the first side surface 100-S1 of the main body 100 and the second cooling member 320 in contact with the second side surface 100-S2 of the main body 100 may be arranged alternately along a direction. For example, the first cooling member 310 and the second cooling member 320 may be arranged alternately along the third direction DR3. As the first cooling member 310 and the second cooling member 320 are arranged alternately along the third direction DR3, the distance that the vaporized ink IKG travels toward the negative pressure generating member 200 can be relatively increased. As a result, the likelihood that the vaporized ink IKG will liquefy upon contact with the surface of the cooling member 300 can be relatively increased.

[0097] Figure 7is a cross-sectional view showing an inkjet printing device according to another embodiment of the present invention. Specifically, Figure 7 is a cross-sectional view illustrating the reservoir 20 included in the inkjet printing apparatus IPA'. Figure 8 It shows Figure 7 A three-dimensional diagram of the storage device.

[0098] Reference Figure 7 and Figure 8 According to another embodiment of the present invention, the inkjet printing device IPA' may include a supply portion (eg Figure 3 supply unit SUP), a reservoir 20, and an inkjet head (eg Figure 3 The reservoir 20 may include a main body 100, a negative pressure forming member (eg Figure 3 a negative pressure forming component 200 ), a cooling component 300 ′ and a guide pattern 400 .

[0099] The inkjet printing apparatus IPA′ may be substantially the same as the reference numeral 10′ except for the direction in which the cooling member 300′ included in the reservoir 20 extends. Figures 1 to 4 Therefore, the following description will be omitted or simplified. Figures 1 to 4 Description of the inkjet printing apparatus IPA repeated content.

[0100] The cooling member 300' may be disposed inside the receiving space S. The cooling member 300' may contact the side surface 100-S of the main body 100. Specifically, the cooling member 300' may contact the first side surface 100-S1 of the main body 100 or the second side surface 100-S2 of the main body 100.

[0101] In one embodiment, the cooling member 300' may extend in a first diagonal direction between the second direction DR2 and the third direction DR3, or in a second diagonal direction between the opposite direction of the second direction DR2 and the third direction DR3. The first diagonal direction and the second diagonal direction may intersect each other. In other words, the cooling member 300' may be inclined from the side surface 100-S of the main body 100 toward the top surface 100-T of the main body 100.

[0102] The guide pattern 400 may be disposed on the first surface of the cooling member 300 ′. Here, the first surface of the cooling member 300 ′ may be the surface facing the ink IK in the receiving space S. The guide pattern 400 may extend from the first surface of the cooling member 300 ′ toward the ink IK in the receiving space S.

[0103] The guide pattern 400 may be inclined toward the side surface 100-S of the main body 100. For example, when the cooling component 300' contacts the first side surface 100-S1 of the main body 100, the guide pattern 400 disposed on the first surface of the cooling component 300' may be inclined toward the first side surface 100-S1 of the main body 100. As another example, when the cooling component 300' contacts the second side surface 100-S2 of the main body 100, the guide pattern 400 disposed on the first surface of the cooling component 300' may be inclined toward the second side surface 100-S2 of the main body 100.

[0104] The guide pattern 400 can guide the ink liquefied by the cooling member 300' toward the side surface 100-S of the main body 100. In one embodiment, because the cooling member 300' is tilted from the side surface 100-S toward the top surface 100-T of the main body 100, the guide pattern 400 disposed on the first surface of the cooling member 300' can more effectively guide the liquefied ink toward the side surface 100-S of the main body 100.

[0105] In one embodiment, the cooling member 300' may include a first cooling member 310' and a second cooling member 320'. The first cooling member 310' and the second cooling member 320' may be spaced apart from each other in the third direction DR3.

[0106] The first cooling member 310' may be in contact with the first side surface 100-S1 of the main body 100 and spaced apart from the second side surface 100-S2 of the main body 100. The first cooling member 310' may extend in the second diagonal direction between the opposite direction of the second direction DR2 and the third direction DR3. In other words, the first cooling member 310' may be inclined from the first side surface 100-S1 of the main body 100 toward the top surface 100-T of the main body 100.

[0107] The second cooling component 320' may be in contact with the second side surface 100-S2 of the main body 100 and separated from the first side surface 100-S1 of the main body 100. The second cooling component 320' may extend in the first diagonal direction between the second direction DR2 and the third direction DR3. In other words, the second cooling component 320' may be inclined from the second side surface 100-S2 of the main body 100 toward the top surface 100-T of the main body 100. The above description is made with reference to exemplary embodiments of the present invention, but it will be understood by those having ordinary knowledge in the art that various modifications and changes may be made to the present invention without departing from the scope of the concept and field of the present invention as set forth in the appended claims.

[0108] The present invention can be applied to inkjet printing devices capable of manufacturing display devices. For example, the present invention can be applied to inkjet printing devices capable of manufacturing various display devices, such as display devices for vehicles, ships, and aircraft, portable communication devices, display devices for display or information transmission, and medical display devices.

Claims

1. A storage device, characterized in that: include: The main body defines a receiving space for receiving ink; a negative pressure forming component connected to the main body and providing negative pressure to the receiving space; a cooling component, disposed inside the receiving space; as well as The guide pattern is disposed on the first surface of the cooling component and is inclined toward the side surface of the main body.

2. The storage device according to claim 1, characterized in that The first surface of the cooling member is a surface facing the ink, A second surface of the cooling member opposite to the first surface is a surface facing the negative pressure generating member.

3. The storage device according to claim 1, wherein: The cooling member is arranged between the ink and the negative pressure forming member.

4. The storage device according to claim 1, wherein: The negative pressure forming member is connected to the main body through a through hole defined on the upper surface of the main body. The cooling member is spaced apart from the through hole.

5. The storage device according to claim 1, wherein: The cooling member is in contact with the side surface of the main body.

6. The storage device according to claim 1, characterized in that The cooling member includes: a first cooling member in contact with a first side surface of the main body; and a second cooling member in contact with a second side surface of the main body facing the first side surface. The guide pattern includes: a first guide pattern, which is arranged on the first surface of the first cooling component and inclined toward the first side surface of the main body; and a second guide pattern, which is arranged on the first surface of the second cooling component and inclined toward the second side surface of the main body.

7. The storage device according to claim 6, characterized in that The first surface of the first cooling member and the first surface of the second cooling member are surfaces facing the ink.

8. The storage device according to claim 6, characterized in that The first cooling member is spaced apart from the second side surface of the main body. The second cooling member is spaced apart from the first side surface of the main body.

9. The storage device according to claim 8, characterized in that The first cooling member and the second cooling member partially overlap on a plane.

10. The storage device according to claim 8, characterized in that The area separated from the first cooling member and the second side surface of the main body overlaps with the second cooling member in a plane. A region spaced apart from the second cooling member and the first side surface of the main body overlaps with the first cooling member in a planar manner.

11. The storage device according to claim 6, characterized in that The first cooling part and the second cooling part are spaced apart from each other.

12. The storage device according to claim 11, characterized in that Each of the first cooling member and the second cooling member is arranged between the ink and the negative pressure forming member. The first cooling members and the second cooling members are alternately arranged along a direction.

13. An inkjet printing device, characterized in that: include: The nozzle part sprays ink onto the substrate; a reservoir for supplying the ink to the nozzle portion; The storage device includes: A main body portion defines a receiving space for receiving the ink; a negative pressure forming component connected to the main body and providing negative pressure to the receiving space; a cooling component disposed inside the receiving space; and The guide pattern is disposed on the first surface of the cooling component and is inclined toward the side surface of the main body.

14. The inkjet printing device according to claim 13, wherein The first surface of the cooling member is a surface facing the ink in the receiving space. A second surface of the cooling member opposite to the first surface is a surface facing the negative pressure generating member.

15. The inkjet printing device according to claim 13, wherein The cooling member is disposed between the ink in the storage space and the negative pressure forming member.

16. The inkjet printing device according to claim 13, wherein The cooling member is in contact with the side surface of the main body.

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