Device for checking nozzles of an inkjet head

Abstract

The present invention relates to a device for inspecting nozzles of an inkjet head, which is capable of quickly inspecting the ejection state of ink droplets ejected from the head nozzles of an inkjet apparatus provided in a cartridge. To this end, the device for inspecting nozzles of an inkjet head of the present invention includes a cartridge fastening portion installed in a cartridge having an inkjet apparatus built-in, and a cartridge portion provided with a test bench for inspecting the ejection state of ink droplets from the head nozzles of the inkjet apparatus, the cartridge portion having an inspection film supply roll and an inspection film take-up roll installed therein and replaceable to supply an inspection film onto an upper portion of the test bench, and the cartridge portion being attachable to / detachable from the cartridge fastening portion.

Description

Technical Field

[0001] This invention relates to an apparatus for inspecting inkjet head nozzles, and more specifically, to an apparatus for inspecting inkjet head nozzles that allows for quick and easy replacement of an inspection membrane for inspecting the ejection state of ink droplets ejected from the nozzles of an inkjet device located in a storage compartment. Background Technology

[0002] In recent years, with the development of inkjet technology, inkjet technology has been used in various fields, such as displays or semiconductors.

[0003] For example, inkjet technology is used to print ink in extremely small areas or to perform precision coating processes such as those used in LCDs, color filters, OLED RGB, and OLED thin-film encapsulation (TFE). For color filters or OLED RGB, precise amounts of ink droplets are accurately dropped into groups of tens or even a few micrometers to represent each color. In this case, a physical error of less than 1% is required.

[0004] As mentioned above, the ink droplets ejected from the nozzle of the inkjet printer must be kept in a precise direction in order to perform accurate processing using inkjet technology.

[0005] Therefore, periodically check the ink droplet ejection status of the head nozzle to prevent problems such as ink droplets being ejected from the head nozzle in an oblique direction instead of in the precise direction, or not being ejected at all. When these problems occur, it is necessary to use other nozzles for correction rather than maintenance using faulty nozzles.

[0006] As a method for periodically checking the ejection state of ink droplets from a nozzle, there is a method that uses a vision device to observe the ejection state and speed of ink droplets during ejection to determine whether the ejection state of the nozzle is normal.

[0007] However, the drawback of the above method is that it takes a long time because it requires photographing and identifying each ink droplet ejected from many nozzles. To overcome this drawback, a new technology is being developed.

[0008] As a technology for quickly checking the ejection status of ink droplets ejected from multiple nozzles of an inkjet head, Korean Patent Publication No. 10-2016-0083420 discloses "apparatus and method for treating substrate, and discharge rate measuring unit".

[0009] However, in the “apparatus and method for treating substrate, and discharge rate measuring unit” described above, since the substrate processing apparatus is installed in a storage box sealed with a specific gas atmosphere, and the discharge rate measuring unit is also installed in the storage box, there is a very inconvenient problem that the operation of replacing the supply roller and the recovery roller with a new supply roller and a new recovery roller is performed inside the storage box.

[0010] Therefore, a technology is needed that allows for rapid replacement of the supply and recovery rollers and quick inspection of the ink droplet ejection status.

[0011] [Related Technical Documents] Korean Patent Publication No. 10-2016-0083420 (July 12, 2016) Summary of the Invention

[0012] Technical issues

[0013] The present invention provides an apparatus for inspecting inkjet head nozzles, which can quickly and easily replace the inspection membrane used to inspect the ejection state of ink droplets ejected from the nozzles of an inkjet device located in a storage compartment, thereby shortening the inspection time and solving the problems of related technologies.

[0014] Technical solution

[0015] To address the aforementioned technical problems, embodiments of the present invention provide an apparatus for inspecting inkjet head nozzles. The apparatus includes: a housing fastening portion, comprising: a fixing base, the fixing base being installed in a maintenance area within a storage compartment for maintaining the inkjet head nozzles; a housing having a rectangular box shape and fixed to the upper part of one side of the fixing base; and a supply manifold, the supply manifold being installed on the upper part of the housing; and a box portion, the box portion including: a cover box having a rectangular box shape, the rectangular box shape having an open side and the... The bottom surface of the cover box is disposed on the top surface of the fixed base, and an opening is disposed on the housing to allow the cover box to be fastened to the box fastening part; an outer plate, which is fastened to the other side of the cover box by a plurality of connecting rods; a connecting manifold, which is fastened to the upper part of the cover box and the upper part of the outer plate; a test stand, which is assembled to the upper part of the connecting manifold; and unwinding rollers and winding rollers parallel to each other between the cover box and the outer plate, the unwinding rollers being for mounting a replaceable inspection film supply roll, and the winding rollers being for mounting a replaceable inspection film recycling roll.

[0016] Preferably, the supply manifold may include: at least one positive pressure supply port connected to a positive pressure port configured to receive positive pressure; and at least one negative pressure supply port connected to a negative pressure port configured to receive negative pressure, and the connection manifold may include: at least one positive pressure connection port connected to the positive pressure supply port to receive positive pressure from the positive pressure supply port; a positive pressure discharge port providing the positive pressure from the positive pressure connection port to the test bench; at least one negative pressure connection port connected to the negative pressure supply port to receive negative pressure from the negative pressure supply port; and a negative pressure discharge port providing the negative pressure from the negative pressure connection port to the test bench.

[0017] Preferably, the housing may include a rotary drive portion and a drive gear, the drive gear being rotated by the rotational force of the rotary drive portion and exposed to the outside of the housing, and the winding roller being exposed to the opening of the cover and connected to a driven gear shaft that engages with the drive gear.

[0018] Preferably, the box portion may include a driven friction roller disposed parallel to the unwinding roller between the cover box and the outer plate, and connected to a transmission gear shaft exposed in the opening of the cover box. The box fastening portion may include a measuring gear engaged with the transmission gear, a rotating disk connected to the measuring gear shaft, and a photoelectric sensor configured to detect the amount of rotation of the rotating disk.

[0019] Preferably, a guide rail may be formed on the top surface of the fixed base, and a guide guided by the guide rail may be disposed on the bottom surface of each of the outer plate and the cover box.

[0020] Preferably, the guide protrusion that guides the mounting position of the box portion to the box fastening portion and the guide bushing into which the guide protrusion is inserted can be respectively disposed on the opposing surfaces of the housing and the cover box.

[0021] Preferably, the unwinding roller can be frictionally supported by a friction unit, the friction unit including a pulley connected to the shaft of the unwinding roller and exposed to the opening of the cover, a friction line wound on the pulley to generate a predetermined frictional force, and a fixing bracket configured to fix the two ends of the friction line.

[0022] Preferably, the unwinding roller may include a first unwinding roller rotatably supported on the cover and a second unwinding roller rotatably supported on the outer plate, and the winding roller may include a first winding roller rotatably supported on the cover and a second winding roller rotatably supported on the outer plate.

[0023] Preferably, the plurality of connecting rods can be separated from the cover box and the outer panel, and when the plurality of connecting rods are separated from the cover box and the outer panel, the outer panel can be separated from the cover box.

[0024] Preferably, an anti-rotation protrusion may be formed on each of the unwinding roller and the winding roller, a portion of the inspection film roll being held in place by the anti-rotation protrusion and inserted into the anti-rotation protrusion to prevent relative rotation of the inspection film supply roll or the inspection film recovery roll.

[0025] Preferably, the circular flange configured to prevent separation of the inspection film supply roll or the inspection film recovery roll can be integrally formed at each of the two ends of each of the unwinding roller and the winding roller.

[0026] Preferably, a support bracket may be provided on each of the two sides of the connecting manifold, and a membrane support rod with a circular upper part may be provided on the support bracket to keep the inspection membrane in a horizontal state.

[0027] Preferably, fastening units that are connected to each other can be provided on the housing and the cover box to fix the installation state of the box part to the box fastening part.

[0028] To address the aforementioned technical problems, an apparatus for inspecting inkjet head nozzles includes: a housing fastener installed in a storage compartment with a built-in inkjet device; and a housing comprising a test stand for inspecting the ejection state of ink droplets from the inkjet head nozzles, the housing being fitted with a test film supply roll and a test film return roll, the test film supply roll and the test film return roll being replaceable to supply the test film to the upper part of the test stand, and the housing being attachable to / detachable from the housing fastener.

[0029] Preferably, the cartridge fastener can be mounted on a maintenance area in the storage compartment, the maintenance area being configured to maintain the head nozzle of the inkjet device.

[0030] Preferably, the box fastening portion may include: at least one positive pressure supply hole connected to a positive pressure port configured to receive positive pressure; and at least one negative pressure supply hole connected to a negative pressure port configured to receive negative pressure, wherein the positive pressure from the positive pressure supply hole and the negative pressure from the negative pressure supply hole can be supplied to the box portion.

[0031] Preferably, the box fastening part may include a rotation drive part and a drive gear that rotates by the rotational force of the rotation drive part, and the rotational force of the drive gear can be supplied to the box part.

[0032] Preferably, the box fastening portion may include: a measuring gear configured to rotate by receiving a rotational force from a driven friction roller disposed on the box portion, thereby rotating by friction with the inspection film supplied from the inspection film for unwinding; a rotating disk connected to the measuring gear for rotation; and a photoelectric sensor configured to detect the amount of rotation of the rotating disk and to calculate the amount of unwinding of the inspection film supplied from the inspection film based on the amount of rotation of the rotating disk detected by the photoelectric sensor.

[0033] Preferably, the box fastening portion may include at least one installation guide configured to guide the box portion into the installation position.

[0034] Preferably, the housing portion may include: at least one positive pressure connection hole configured to receive positive pressure from the housing fastener; and at least one negative pressure connection hole configured to receive negative pressure from the housing fastener, wherein the positive pressure supplied from the housing fastener to the positive pressure connection hole and the negative pressure supplied from the housing fastener to the negative pressure connection hole can be supplied to the upper part of the test platform.

[0035] Preferably, the cassette portion may include: an unwinding roller for mounting the inspection film supply roll; and a winding roller for mounting an inspection film recovery roll, the inspection film recovery roll being configured to wind the inspection film from the inspection film supply roll mounted on the unwinding roller. Here, the winding roller can rotate by receiving a rotational force from the cassette fastener, and the unwinding roller can be frictionally supported by a friction unit.

[0036] Preferably, the inspection film can be transferred such that the inspection surface of the inspection film supplied from the unwinding roller faces the opposite side of the test bench, and then the inspection film is wound back around the winding roller.

[0037] Preferably, the box portion may include a driven friction roller configured to rotate by friction with the inspection film supplied from the inspection film as it is unwound, and the rotational force of the driven friction roller may be supplied to the box fastening portion.

[0038] Preferably, the housing fastening portion may include: at least one positive pressure supply port connected to a positive pressure port configured to receive positive pressure; and at least one negative pressure supply port connected to a negative pressure port configured to receive negative pressure. The housing portion may also include: at least one positive pressure connection port connected to the positive pressure supply port to receive positive pressure from the positive pressure supply port; and at least one negative pressure connection port connected to the negative pressure supply port to receive negative pressure from the negative pressure supply port. Here, the positive pressure supplied to the positive pressure connection port and the negative pressure supplied to the negative pressure connection port can be supplied to the upper part of the test stage to allow the inspection membrane to float.

[0039] Preferably, the box fastening portion may include a rotation drive portion and a drive gear configured to rotate by the rotational force of the rotation drive portion, and the box portion may include: an unwinding roller for mounting the inspection film supply roll; and a winding roller for mounting the inspection film recovery roll, the inspection film recovery roll being configured to wind the inspection film mounted on the inspection film supply roll mounted on the unwinding roller. Here, the unwinding roller may be frictionally supported by a friction unit, the winding roller may be connected to a driven gear shaft, and the rotational force of the drive gear may be transmitted to the driven gear to allow the unwinding roller to rotate.

[0040] Preferably, the cartridge portion may include: a driven friction roller configured to rotate by friction with the inspection film supplied for unwinding from the inspection film; and a drive gear shaft connected to the driven friction roller. The cartridge fastening portion may include: a measuring gear configured to rotate by receiving rotational force from the drive gear; a rotating disk connected to the measuring gear for rotation; and a photoelectric sensor configured to detect the amount of rotation of the rotating disk. Here, the amount of unwinding of the inspection film supplied for unwinding from the inspection film can be calculated based on the amount of rotation of the rotating disk detected by the photoelectric sensor.

[0041] To solve the above-mentioned technical problems, a porous ink droplet placement layer can be provided on the surface of the inspection film in an apparatus for inspecting inkjet head nozzles.

[0042] Beneficial effects

[0043] As described above, the advantage of the present invention is that the inspection membrane used to inspect the ejection state of ink droplets ejected from the nozzle of the inkjet device located in the storage compartment can be replaced quickly and easily, thereby shortening the inspection time.

[0044] The purpose of this invention is not limited to the above description, and those skilled in the art will clearly understand from the following description other purposes not described herein. Attached Figure Description

[0045] Figure 1 This is a perspective view showing an apparatus for inspecting inkjet head nozzles in one direction according to an embodiment of the present invention.

[0046] Figure 2 This is a perspective view showing an apparatus for inspecting inkjet head nozzles in another direction according to an embodiment of the present invention.

[0047] Figure 3 This is an exploded perspective view showing an apparatus for inspecting inkjet head nozzles according to an embodiment of the present invention.

[0048] Figure 4 This is a perspective view showing the interior of the housing fastening portion of an apparatus for inspecting inkjet head nozzles according to an embodiment of the present invention.

[0049] Figure 5 This is an exploded perspective view showing a partial structure of the housing portion of an apparatus for inspecting inkjet head nozzles according to an embodiment of the present invention.

[0050] Figure 6 This is an exploded perspective view of the test stand of the housing portion of an apparatus for inspecting inkjet head nozzles according to an embodiment of the present invention.

[0051] Figure 7 This is a cross-sectional view showing an apparatus for inspecting inkjet head nozzles according to an embodiment of the present invention.

[0052] Figure 8 This is a cross-sectional view showing an inspection membrane disposed on the housing portion of an apparatus for inspecting inkjet head nozzles according to an embodiment of the present invention.

[0053] Figure 9 This is a view showing the process of fastening the housing portion of the device for inspecting inkjet head nozzles according to an embodiment of the present invention to the housing fastening portion. Detailed Implementation

[0054] The present invention can be implemented in various embodiments without departing from the technical concept or main features. Therefore, the above embodiments are merely illustrative of the present invention and should not be interpreted as limiting.

[0055] It should be understood that although terms such as “first” and “second” are used herein to describe various elements, these elements should not be limited by these terms.

[0056] These terms are used only to distinguish one component from other components. For example, a first element referred to as a first element in one embodiment may be referred to as a second element in another embodiment without departing from the scope of the appended claims.

[0057] As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0058] It should also be understood that when a component is referred to as being "connected to" or "joined" to another component, it can be directly connected to the other component, or there may be an intermediate component.

[0059] It will also be understood that when one element is said to be "directly connected" to another element, there are no intermediate elements.

[0060] In the following description, technical terms are used only to explain specific exemplary embodiments and are not intended to limit the invention. Singular terms may include plural forms unless otherwise stated.

[0061] The meaning of "including" or "comprises" is that the specification defines a characteristic, number, step, process, element, component or combination thereof, but does not exclude other characteristics, numbers, steps, processes, elements, components or combinations thereof.

[0062] Unless the terms used in this disclosure are defined differently, they may be interpreted as having meanings known to those skilled in the art.

[0063] Terms such as those commonly used and already in dictionaries should be interpreted as having a meaning that matches the context in this field. In this specification, unless explicitly defined, terms should not ideally be over-interpreted as having a formal meaning.

[0064] In the following description, embodiments disclosed herein will be described with reference to the accompanying drawings, and regardless of reference numerals, the same or corresponding parts will be given the same reference numerals, and repeated descriptions of them will be omitted.

[0065] Furthermore, detailed descriptions relating to well-known functions or structures will be excluded to avoid unnecessarily obscuring the subject matter of the invention.

[0066] like Figures 1 to 3 As shown, the device for inspecting the inkjet head nozzles includes a housing fastener 100 and a housing 200.

[0067] First, the box fastening part 100 will be described in detail.

[0068] The box fastener 100 is installed in a storage box with a built-in inkjet device, and the box part 200 can be attached to the box fastener 100 / removed from the box fastener 100.

[0069] Specifically, the box fastener 100 is installed in a maintenance area for holding the head nozzle of the inkjet device within the internal space of the storage box, i.e., in an area accessible to workers wearing gloves.

[0070] like Figures 1 to 4 As shown, the box fastening part 100 includes a fixing base 110, a housing 120 and a supply manifold 130.

[0071] The mounting base 110, which allows the cartridge fastener 100 to be installed in the storage box, is installed in the maintenance area of ​​the inkjet head nozzle for maintaining the inkjet equipment.

[0072] Specifically, the fixed base 110 can be installed on a platform that can move along the X-axis or Y-axis direction on the plane of the maintenance area in the storage box.

[0073] A guide rail 111 for guiding the installation of the housing 200 is formed on the top surface of the fixed base 110, and the housing 200 includes a first guide 211 and a second guide 221 that can slide along the guide rail 111. The housing 200 can be guided to the installation position by the guide rail 111 during installation.

[0074] Specifically, the first guide 211 may be disposed on the bottom surface of the cover 210 of the box portion 200, and the second guide 221 may be disposed on the bottom surface of the outer plate 220 of the box portion 200.

[0075] The housing 120, which is part of the upper part of one side of the fixed base 110, can have a rectangular box shape.

[0076] like Figure 3 and Figure 4 As shown, the housing 120 includes a rotation drive portion 121 and a drive gear 123 that rotates by the rotational force of the rotation drive portion 121 and is exposed to the outside of the housing 120.

[0077] The rotary drive section 121, which serves as a rotary drive unit for motors, reducers, etc., can receive power from a power supply device in the storage box to generate rotational force.

[0078] The drive gear 123, which is a part of the drive shaft that is connected to the rotary drive part 121 for rotation, is exposed outside the housing 120 in the direction in which the housing part 200 is fastened.

[0079] When the box fastening part 100 and the box part 200 are fastened to each other, the rotational force of the drive gear 123 driven by the rotation drive part 121 can be provided to the box part 200.

[0080] like Figure 4As shown, the housing 120 includes: a measuring gear 125a that rotates by receiving a rotational force from a driven friction roller 245 disposed on the housing portion 200; a rotating disk 125b connected to the measuring gear 125a for rotation; and a photoelectric sensor 125c for detecting the amount of rotation of the rotating disk 125b.

[0081] For example, since the measuring gear 125a is axially connected to one side of a rotating shaft that is rotatably supported by a rolling unit such as a bearing, and the rotating disk 125b is axially connected to the other side of the rotating shaft, the rotating disk 125b can rotate as a whole when the measuring gear 125a rotates.

[0082] The photoelectric sensor 125c can detect the rotation amount of the rotating disk 125b and calculate the rotation amount of the driven friction roller 245 based on the detected rotation amount of the rotating disk 125b.

[0083] The driven friction roller 245, which rotates in friction with the inspection film F unwound from the inspection film supply roll R1, can calculate the amount of rotation of the driven friction roller 245 to calculate the amount of unwinding of the inspection film F unwound from the inspection film supply roll R1.

[0084] The guide protrusion 127 can be disposed on the corresponding surface of the housing 120 on which the box portion 200 is mounted, and the guide bushing 217 can be disposed on the corresponding portion of the box portion 200 corresponding to the guide protrusion 127. The mounting position of the box portion 200 to the box fastening portion 100 can be guided by the guide protrusion 127 and the guide bushing 217.

[0085] Specifically, the guide bushing 217 can be disposed on the corresponding surface of the cover 210 of the box portion 200 facing the housing 120.

[0086] A first fastening unit 190 for fastening the lid 210 of the box portion 200 may be provided on the side of the housing 120, and a second fastening unit 290 may be provided on the corresponding part of the lid 210 corresponding to the first fastening unit 190. The installation state of the box portion 200 to the box fastening part 100 may be fixed by the first fastening unit 190 and the second fastening unit 290.

[0087] The supply manifold 130 is installed on the upper part of the housing 120.

[0088] A positive pressure port 131a connected to a positive pressure supply device in the storage box to receive positive pressure and a negative pressure port 132a connected to a negative pressure supply device in the storage box to receive negative pressure are provided on one side of the supply manifold 130.

[0089] A positive pressure supply port 131b connected to the positive pressure port 131a to supply positive pressure and a negative pressure supply port 132b connected to the negative pressure port 132a to supply negative pressure are provided on the other side of the supply manifold 130.

[0090] Although the supply manifold 130 in this embodiment includes two positive pressure ports 131a, two positive pressure supply holes 131b, one negative pressure port 132a, and one negative pressure supply hole 132b, the number of each of the positive pressure ports 131a, negative pressure ports 132a, positive pressure supply holes 131b, and negative pressure supply holes 132b can be varied.

[0091] When the box fastening part 100 and the box part 200 are fastened together, the positive pressure of the positive pressure supply hole 131b and the negative pressure of the negative pressure supply hole 132b can be supplied to the connecting manifold 230 of the box part 200.

[0092] Next, the box section 200 will be described in detail.

[0093] The cartridge 200 may include a test stand 235 for inspecting the ejection state of ink droplets from the nozzle of an inkjet device, and may be fitted with a test film supply roll R1 and a test film return roll R2 to supply the test film to the upper part of the test stand 235.

[0094] The box part 200 can be fastened to the box fastening part 100 or separated from the box fastening part 100.

[0095] For example, the box section 200 can be set into the maintenance area of ​​the storage box through a anteroom, which is configured to allow the space to be connected to or separated from the storage box by opening and closing a door, and then the worker can simply install the box section 200 to the box fastener 100.

[0096] like Figures 1 to 3 , Figure 5 and Figure 6 As shown, the box section 200 includes a cover box 210, an outer plate 220, a connecting manifold 230, a test table 235, an unwinding roller 241, and a winding roller 243.

[0097] The lid 210 has a rectangular box shape with one side open. The lid 210 is configured such that the bottom surface is placed on the top surface of the fixing base 110, and the opening is placed on the housing 120 to allow the lid 210 to be fastened to the box fastening part 100.

[0098] The outer panel 220 can be fastened to the other side of the cover box 210 by multiple connecting rods 250 and has an approximate "I" shape.

[0099] Multiple connecting rods 250 connect or separate the cover box 210 and the outer panel 220 from each other. For example, one end of each connecting rod 250 can pass through the first hole h1 of the outer panel 220 and be fixed to the second hole h2 of the cover box 210, and a knob 250n provided on the other end of each connecting rod 250 can be held by the first hole h1 of the outer panel 220.

[0100] Therefore, when the knob 250n is rotated with one end of the connecting rod 250 passing through the first hole h1 and then positioned in the second hole h2, the connecting rod 250 secures the cover box 210 and the outer plate 220 while maintaining a predetermined distance between them.

[0101] Well-known fastening structures such as bolt and nut structures or locking elements can be applied to one end of the connecting rod 250 and the second hole h2 for mutual fastening when the connecting rod 250 rotates.

[0102] The connecting manifold 230 is fastened to the upper part of the cover box 210 and the upper part of the outer panel 220.

[0103] like Figure 6 As shown, the connection manifold 230, which has an approximately rectangular block shape, may include: at least one positive pressure connection port 231a connected to a positive pressure supply port 131b to receive positive pressure from the positive pressure supply port 131b of the supply manifold 130; a positive pressure discharge port 231b that provides the positive pressure from the positive pressure connection port 231a to the test stage 235; at least one negative pressure connection port 232a connected to a negative pressure supply port 132b to receive negative pressure from the negative pressure supply port 132b of the supply manifold 130; and a negative pressure discharge port 232b that provides the negative pressure from the negative pressure connection port 232a to the test stage 235.

[0104] That is, when the box fastening part 100 and the box part 200 are fastened together, the supply manifold 130 of the box fastening part 100 and the connecting manifold 230 of the box part 200 are connected to each other. Here, the positive pressure supply hole 131b and the positive pressure connecting hole 231a are connected to each other, and the negative pressure supply hole 132b and the negative pressure connecting hole 232a are connected to each other.

[0105] In addition, an O-ring can be disposed between the positive pressure supply port 131b and the positive pressure connection port 231a and between the negative pressure supply port 132b and the negative pressure connection port 232a, and the O-ring can be disposed on one of the supply manifold 130 and the connection manifold 230.

[0106] Positive pressure is supplied from the supply manifold 130 of the box fastening part 100 to the positive pressure connection hole 231a and negative pressure is supplied to the test stage 235 from the negative pressure connection hole 232a.

[0107] Test stand 235 is assembled onto the upper part of connecting manifold 230.

[0108] like Figure 6 As shown, the test stage 235 may have a structure in which a lower block 235a and an upper block 235b are integrated with each other. This structure may be equal to or similar to a known floating device that uses positive and negative pressure to lift a substrate with a predetermined gap, and its detailed description will be omitted.

[0109] The test bench 235 is connected to the positive pressure discharge port 231b and the negative pressure discharge port 232b of the connecting manifold 230, and the positive and negative pressures act together on the top surface of the upper block of the test bench 235.

[0110] O-rings can be installed in the positive pressure discharge port 231b and negative pressure discharge port 232b of the connecting manifold 230.

[0111] Support brackets 233 are provided on each of the two sides of the connecting manifold 230, and membrane support rods 234 with circular upper parts are provided on the support brackets 233 to keep the inspection membrane F in a horizontal state.

[0112] Therefore, the inspection membrane F can be supplied to the upper part of the test stage 235 in a horizontal state through the membrane support rod 234, and the positive and negative pressures acting on the top surface of the test stage 235 allow the inspection membrane F to float a predetermined distance from the upper part of the test stage 235.

[0113] The unwinding roller 241 and the winding roller 243 can be arranged parallel to each other between the cover box 210 and the outer panel 220, and replaceable inspection film rolls can be mounted thereon. Specifically, the inspection film supply roll R1 can be mounted to the unwinding roller 241, and the inspection film recovery roll R2 can be mounted to the winding roller 243.

[0114] like Figure 5 and Figure 7 As shown, the unwinding roller 241 can be divided into a first unwinding body 241-1, which is rotatably supported by a first bearing B1 on the cover box 210, and a second unwinding body 241-2, which is rotatably supported by a second bearing B2 on the outer plate 220.

[0115] A first anti-rotation protrusion 241-1p may be formed on the first unwinding body 241-1 of the unwinding roller 241. A portion of the inspection film supply roll R1 is caught and inserted into the first anti-rotation protrusion 241-1p to prevent relative rotation of the inspection film supply roll R1.

[0116] Furthermore, a first circular flange 241p that prevents separation of the inspection film supply roll R1 can be integrally formed on each of the two ends of the unwinding roller 241.

[0117] like Figure 3 As shown, the unwinding roller 241 is frictionally supported by a friction unit, which includes a pulley 241a that is axially connected to the unwinding roller 241 and exposed to the opening of the cover box 210, a friction line 241b wound on the pulley 241a to generate a predetermined frictional force, and a fixing bracket 241c that fixes the two ends of the friction line 241b.

[0118] Since the unwinding roller 241 is frictionally supported by the friction unit, when the inspection film F wound on the inspection film supply roll R1 is unwound by the winding roller 243, a predetermined tension is applied to the inspection film F by the friction unit.

[0119] like Figure 5 and Figure 7 As shown, the winding roller 243 can be divided into a first winding body 243-1, which is rotatably supported by a third bearing B3 on the cover box 210, and a second winding body 243-2, which is rotatably supported by a fourth bearing B4 on the outer plate 220.

[0120] A second anti-rotation protrusion 243-1p may be formed on the first winding body 243-1 of the winding roller 243. A portion of the inspection film recovery roll R2 is caught and inserted into the second anti-rotation protrusion 243-1p to prevent relative rotation of the inspection film recovery roll R2.

[0121] Furthermore, a second circular flange 243p to prevent separation of the inspection film recovery roll R2 can be integrally formed on each of the two ends of the winding roller 243.

[0122] like Figure 3 As shown, the winding roller 243 is exposed at the opening of the cover box 210 and is connected to the driven gear 243g shaft that engages with the drive gear 123.

[0123] The winding roller 243 rotates by receiving rotational force from the box fastener 100. Specifically, the rotational force of the drive gear 123 is transmitted to the driven gear 243g to allow the winding roller 243 to rotate.

[0124] The driven friction roller 245 is further disposed between the cover box 210 and the outer plate 220, and is arranged parallel to the unwinding roller 241. The transmission gear 245g exposed at the opening of the cover box 210 is connected to the shaft of the driven friction roller 245.

[0125] Specifically, the driven friction roller 245 can be rotatably supported by bearings provided in the third hole h3 and the fourth hole h4.

[0126] Therefore, the rotational force of the transmission gear 245g can be transmitted to the measuring gear 125a, the rotational force transmitted to the measuring gear 125a can allow the rotating disk 125b to rotate, and the rotation amount of the rotating disk 125b can be detected by the photoelectric sensor 125c to calculate the unwinding amount of the inspection film F unwound from the inspection film supply roll R1.

[0127] With the above-described configuration of the unwinding roller 241 and the winding roller 243, the inspection film F is transferred such that the inspection surface of the inspection film unwound from the inspection film supply roll R1 mounted on the unwinding roller 241 faces upward in the test table 235, and then the inspection film recovery roll R2 mounted on the winding roller 243 is wound around it.

[0128] like Figure 8 As shown, a porous droplet placement layer F2 is disposed on the surface of the inspection film wound around the inspection film supply roll. Specifically, the droplet placement layer F2 can be formed by applying an anodized aluminum oxide (AAO) layer or a nanoparticle layer to the surface of the PET film F1, thereby reducing the error in the position of the droplets D falling onto the surface of the inspection film F due to vibration or device transfer.

[0129] The subject matter disclosed above should be considered illustrative rather than restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments that fall within the true spirit and scope of the invention. Therefore, to the fullest extent permitted by law, the scope of the invention will be determined by the broadest permissible interpretation of the appended claims and their equivalents, and should not be limited or restricted by the foregoing detailed description.

Claims

1. An apparatus for supplying an inspection film for inspecting the ejection state of ink droplets ejected from a nozzle of an inkjet printer disposed in a storage compartment, the apparatus comprising: The case fastener includes: a mounting base configured to be installed in a maintenance area within the storage case for maintaining the nozzle of the inkjet device; a housing having a rectangular box shape and fixed to the upper part of one side of the mounting base; and a supply manifold mounted to the upper part of the housing; and The box section includes: a lid having a rectangular box shape with an open side and the bottom surface of the lid being disposed on the top surface of the fixed base, and an opening being disposed on the housing to allow the lid to be fastened to the box fastening part; an outer panel being fastened to the other side of the lid by a plurality of connecting rods; a connecting manifold being fastened to the upper part of the lid and the upper part of the outer panel; a test stand being assembled to the upper part of the connecting manifold; and unwinding rollers and winding rollers parallel to each other between the lid and the outer panel, the unwinding rollers being for mounting a replaceable inspection film supply roll, and the winding rollers being for mounting a replaceable inspection film recycling roll.

2. The apparatus according to claim 1, wherein, The supply manifold includes: At least one positive pressure supply port, said at least one positive pressure supply port being connected to a positive pressure port configured to receive positive pressure; and At least one negative pressure supply port, said at least one negative pressure supply port being connected to a negative pressure port configured to receive negative pressure, and The connecting manifold includes: At least one positive pressure connection port, the at least one positive pressure connection port being connected to the positive pressure supply port to receive positive pressure from the positive pressure supply port; A positive pressure discharge port provides positive pressure to the test bench through the positive pressure connection port; At least one negative pressure connection port, said at least one negative pressure connection port being connected to said negative pressure supply port to receive negative pressure from said negative pressure supply port; and A negative pressure discharge port provides negative pressure to the test bench through the negative pressure connection port.

3. The apparatus according to claim 1, wherein, The housing includes a rotary drive section and a drive gear, the drive gear being rotated by the rotational force of the rotary drive section and exposed to the outside of the housing. The winding roller is exposed at the opening of the cover and connected to the driven gear shaft that engages with the drive gear.

4. The apparatus according to claim 1, wherein, The box portion includes a driven friction roller, which is disposed parallel to the unwinding roller between the cover box and the outer plate, and is connected to a drive gear shaft exposed in the opening of the cover box. The box fastening part includes a measuring gear that engages with the transmission gear, a rotating disk connected to the shaft of the measuring gear, and a photoelectric sensor configured to detect the amount of rotation of the rotating disk.

5. The apparatus according to claim 1, wherein, A guide rail is formed on the top surface of the fixed base, and a guide guided by the guide rail is disposed on the bottom surface of each of the outer plate and the cover box.

6. The apparatus according to claim 1, wherein, A guide protrusion configured to guide the mounting position of the box portion to the box fastening portion and a guide bushing into which the guide protrusion is inserted are respectively disposed on the opposing surfaces of the housing and the cover box.

7. The apparatus according to claim 1, wherein, The unwinding roller is frictionally supported by a friction unit, which includes a pulley connected to the unwinding roller shaft and exposed to the opening of the cover, a friction line wound on the pulley to generate a predetermined frictional force, and a fixing bracket configured to fix the two ends of the friction line.

8. The apparatus according to claim 1, wherein, The unwinding roller includes a first unwinding roller rotatably supported on the cover and a second unwinding roller rotatably supported on the outer plate. The winding roller includes a first winding roller rotatably supported on the cover and a second winding roller rotatably supported on the outer plate.

9. The apparatus according to claim 1, wherein, The plurality of connecting rods can be separated from the cover box and the outer panel, and when the plurality of connecting rods are separated from the cover box and the outer panel, the outer panel is separated from the cover box.

10. The apparatus according to claim 1, wherein, An anti-rotation protrusion is formed on each of the unwinding roller and the winding roller, and a portion of the inspection film roll is held in place by the anti-rotation protrusion and inserted into the anti-rotation protrusion to prevent relative rotation of the inspection film supply roll or the inspection film recovery roll.

11. The apparatus according to claim 1, wherein, A circular flange configured to prevent separation of the inspection film supply roll or the inspection film recovery roll is integrally formed at each of the two ends of each of the unwinding roller and the winding roller.

12. The apparatus according to claim 1, wherein, A support bracket is provided on each of the two sides of the connecting manifold, and a membrane support rod with a circular upper part is provided on the support bracket to keep the inspection membrane in a horizontal state.

13. The apparatus according to claim 1, wherein, Fastening units are respectively provided on the housing and the cover to fix the installation state of the box to the box fastening part.

14. The apparatus according to claim 1, wherein, A porous ink droplet placement layer is provided on the surface of the inspection membrane.

15. An apparatus for supplying an inspection film for inspecting the ejection state of ink droplets ejected from a nozzle of an inkjet printer disposed in a storage compartment, the apparatus comprising: A case fastener is configured to be installed in the storage compartment having the built-in inkjet device; as well as The cartridge includes a test stand for inspecting the ejection state of ink droplets from the nozzle of the inkjet device. The cartridge is equipped with an inspection film supply roll and an inspection film return roll, which are replaceable to supply the inspection film to the upper part of the test stand. The cartridge is attachable to / removable from the cartridge fastener.

16. The apparatus according to claim 15, wherein, The box fastener is mounted on a maintenance area in the storage box, the maintenance area being configured to maintain the head nozzle of the inkjet device.

17. The apparatus according to claim 15, wherein, The box fastening part includes: At least one positive pressure supply port, said at least one positive pressure supply port being connected to a positive pressure port configured to receive positive pressure; and At least one negative pressure supply port, said at least one negative pressure supply port being connected to a negative pressure port configured to receive negative pressure, and The positive pressure from the positive pressure supply hole and the negative pressure from the negative pressure supply hole are supplied to the box section.

18. The apparatus according to claim 15, wherein, The box fastening part includes a rotary drive part and a drive gear that rotates by the rotational force of the rotary drive part, and The rotational force of the drive gear is supplied to the housing.

19. The apparatus according to claim 15, wherein, The box fastening part includes: A measuring gear is configured to rotate by receiving a rotational force from a driven friction roller disposed on the box section, thereby rotating by friction with the inspection film supplied from the inspection film for unwinding. A rotating disk, connected to the measuring gear for rotation; and A photoelectric sensor, configured to detect the amount of rotation of the rotating disk. The amount of unwinding of the inspection film supplied from the inspection film is calculated based on the amount of rotation of the rotating disk detected by the photoelectric sensor.

20. The apparatus according to claim 15, wherein, The box fastening part includes at least one installation guide, which is configured to guide the box part into the installation position.

21. The apparatus according to claim 15, wherein, The box portion includes: At least one positive pressure connection hole, the at least one positive pressure connection hole being configured to receive positive pressure from the housing fastener; and At least one negative pressure connection hole, said at least one negative pressure connection hole being configured to receive negative pressure from the box fastening part. The positive pressure supplied from the box fastening part to the positive pressure connection hole and the negative pressure supplied from the box fastening part to the negative pressure connection hole are supplied to the upper part of the test platform.

22. The apparatus according to claim 15, wherein, The box portion includes: Unwinding roller, the unwinding roller being used to mount the inspection film supply roll; and A winding roller for mounting an inspection film recovery roll, the inspection film recovery roll being configured to wind the inspection film from the inspection film supply roll mounted on the unwinding roller. The winding roller rotates by receiving rotational force from the box fastener, and the unwinding roller is frictionally supported by a friction unit.

23. The apparatus according to claim 22, wherein, The inspection film is transferred such that the inspection surface of the inspection film supplied from the unwinding roller faces the opposite side of the test bench, and then the inspection film is wound back around the winding roller.

24. The apparatus according to claim 15, wherein, The cartridge includes a driven friction roller configured to rotate by friction with the inspection film being supplied and unwound from the inspection film. The rotational force of the driven friction roller is supplied to the box fastening part.

25. The apparatus according to claim 15, wherein, The box fastening part includes: At least one positive pressure supply port, said at least one positive pressure supply port being connected to a positive pressure port configured to receive positive pressure; and At least one negative pressure supply port, said at least one negative pressure supply port being connected to a negative pressure port configured to receive negative pressure, and The box portion includes: At least one positive pressure connection port, the at least one positive pressure connection port being connected to the positive pressure supply port to receive positive pressure from the positive pressure supply port; and At least one negative pressure connection port, said at least one negative pressure connection port being connected to the negative pressure supply port to receive negative pressure from the negative pressure supply port. The positive pressure supplied to the positive pressure connection hole and the negative pressure supplied to the negative pressure connection hole are supplied to the upper part of the test stage to allow the inspection membrane to float.

26. The apparatus according to claim 15, wherein, The box fastening part includes a rotary drive portion and a drive gear configured to rotate by the rotational force of the rotary drive portion, and The box portion includes: Unwinding roller, the unwinding roller being used to mount the inspection film supply roll; and A winding roller for mounting the inspection film recovery roll, the inspection film recovery roll being configured to wind the inspection film from the inspection film supply roll mounted on the unwinding roller. The unwinding roller is frictionally supported by a friction unit, and the winding roller is connected to the driven gear shaft. The rotational force of the drive gear is transmitted to the driven gear to allow the unwinding roller to rotate.

27. The apparatus according to claim 15, wherein, The housing includes a driven friction roller configured to rotate by friction with the inspection film supplied and unwound from the inspection film, and a drive gear is connected to the shaft of the driven friction roller. The box fastening part includes: a measuring gear configured to rotate by receiving the rotational force of the transmission gear; a rotating disk connected to the measuring gear for rotation; and a photoelectric sensor configured to detect the amount of rotation of the rotating disk. The amount of unwinding of the inspection film supplied from the inspection film is calculated based on the amount of rotation of the rotating disk detected by the photoelectric sensor.

28. The apparatus according to claim 15, wherein, A porous ink droplet placement layer is provided on the surface of the inspection membrane.

Images