JP5519729B2 - Printing device - Google Patents

Description

  The present invention relates to a printing apparatus.

  Printed Circuit Board (PCB) serves to easily connect many electronic product elements according to a certain format, and is widely used in all electronic products including digital TV, home appliances and advanced communication devices. ing.

  A molten solder paste is applied to the printed circuit board in a certain pattern so that various types of small electronic components such as semiconductor chips and resistor chips can be mounted.

  Here, a screen printer method is widely used as a solder paste coating method, and such a screen printer is executed by a solder paste coating device.

  The screen printer presses a solder paste supplied on a metal mask having openings of a specific pattern with a squeegee and applies it to a component mounting surface of a printed circuit board.

  However, with the increase in the area of the printed circuit board, there has been a problem that the degree of matching between the printed circuit board and the mask becomes poor due to the warpage phenomenon and deformation due to the expansion / contraction rate generated in the manufacturing process. .

  Conventionally, in order to align a printed circuit board and a metal mask, alignment is performed by image recognition using a camera (see Patent Document 1).

  However, the printed circuit board undergoes many heat treatment steps before performing the printing step, so that expansion and contraction occurs due to contraction of the organic substance, and the degree of matching between the printed circuit board and the metal mask becomes inconsistent.

  Therefore, there is a problem in that accurate alignment between the printed circuit board and the metal mask cannot be performed only by conventional image recognition.

JP-A-9-011437

  SUMMARY OF THE INVENTION An object of the present invention is to provide a printing apparatus that can perform uniform printing through multiple processes regardless of warping or shrinkage of a printed circuit board.

  According to one aspect of the present invention, a circuit pattern is formed, a fixed table for fixing a printed circuit board on which a substrate recognition mark is formed, and a circuit pattern located on the upper surface of the printed circuit board, A pattern hole for forming was formed, a metal part on which a mask recognition mark was formed, and a hanger formed on the outer side of the slope of the metal part to which a force for adjusting the size of the metal part was applied. A mask including a mesh portion, a cartridge provided on the upper part of the printed circuit board, mounted with the mask and moving the hanger up and down to adjust the size of the mask, and the upper surface of the mask is moved horizontally to form a cream And a squeegee for applying the substance.

  The cartridge preferably includes a cartridge frame part for fixing the mask, a rotating part connected to the mask hanger to move the hanger up and down, and a driving part for rotating the rotating part.

  Preferably, the driving unit determines whether the substrate recognition mark and the mask recognition mark are aligned, and controls the cartridge to move the hanger according to the determination.

  It is preferable that the cartridge further includes a camera that photographs the substrate recognition mark and the mask recognition mark and supplies position data of the substrate recognition mark and the mask recognition mark to the driving unit.

  Preferably, the cartridge further includes a stopper that limits the vertical movement range of the hanger.

  The printed circuit board preferably includes a circuit region where a circuit pattern is formed and a dummy region formed outside the circuit region and where a substrate recognition mark is formed.

  Preferably, the mask further includes a mask frame portion that is formed outside the mesh portion and is coupled to the cartridge.

  The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

  Prior to the detailed description of the invention, the terms and words used in the specification and claims should not be construed in a normal and lexicographic sense, and the inventor shall best understand his invention. It should be construed as meaning and concept in accordance with the technical idea of the present invention in accordance with the principle that the concept of terms can be appropriately defined to explain in a method.

  The printing apparatus according to the embodiment of the present invention can improve printing uniformity regardless of warping or shrinkage of the printed circuit board by adjusting the size of the mask and aligning the printed circuit board and the mask. .

  The printing apparatus according to the embodiment of the present invention can improve the reliability of the printed circuit board by improving the printing uniformity.

  Further, the printing apparatus according to the embodiment of the present invention can be applied without modifying the conventional printing apparatus, and the cartridge can be inserted into the conventional printing apparatus.

  Furthermore, since the printing apparatus according to the embodiment of the present invention can remove the mask from the cartridge, various masks having different pattern hole shapes can be used, and the manufacturing cost of the printed circuit board can be reduced. .

1 is an exemplary diagram illustrating a printing apparatus according to an embodiment of the present invention. FIG. 5 is an exemplary view showing a mask according to an embodiment of the present invention. It is an exemplary view showing a longitudinal section of a mask according to an embodiment of the present invention. FIG. 3 is an exemplary view showing a cross section of a mask according to an embodiment of the present invention. It is an exemplary view showing a cartridge according to an embodiment of the present invention. It is an exemplary view showing a cartridge on which a mask according to an embodiment of the present invention is mounted. It is an exemplary view showing a cross section of a cartridge according to an embodiment of the present invention. It is an exemplary view showing a cross section of a cartridge according to another embodiment of the present invention.

  Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments when taken in conjunction with the accompanying drawings. In this specification, it should be noted that when adding reference numerals to the components of each drawing, the same components are given the same number as much as possible even if they are shown in different drawings. I must. Further, in describing the present invention, when it is determined that a specific description of the related art related to the present invention may obscure the gist of the present invention, a detailed description thereof will be omitted. In this specification, terms such as “first” and “second” are used to distinguish one component from another component, and the component is not limited by the term.

  Hereinafter, a printing apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exemplary diagram illustrating a printing apparatus according to an embodiment of the present invention.

  Referring to FIG. 1, the printing apparatus 400 includes a main table 410, a fixed table 420, a mask 100 (see FIG. 2), a cartridge 200, and a squeegee (not shown).

  The main table 410 is a table that supports the fixed table 420 on which the printed circuit board 300 is located.

  The fixed table 420 is a table for fixing the printed circuit board 300 to the printing apparatus 400. The fixed table 420 can be provided on the main table 410. For example, the fixing table 420 preferably fixes the printed circuit board 300 using a vacuum.

  The mask 100 (see FIG. 2) is preferably formed to include a metal material having an elastic force that can be pulled or shrunk at a certain length. For example, the mask 100 (see FIG. 2) is preferably formed including a nickel (Ni) material. The mask 100 (see FIG. 2) is provided on the upper surface of the printed circuit board 300, and a pattern hole 112 (see FIG. 2) corresponding to the circuit pattern formed on the printed circuit board 300 is formed.

  A mask 100 (see FIG. 2) is attached to the cartridge 200. The cartridge 200 can be provided on the printed circuit board 300 with the mask 100 (see FIG. 2) attached. The cartridge 200 can adjust the size of the mask 100 (see FIG. 2).

  Although not shown in FIG. 1, the printing apparatus 400 according to the embodiment of the present invention preferably includes a squeegee (not shown). A squeegee (not shown) can move horizontally on top of the mask 100 (see FIG. 2) mounted on the cartridge 200 to apply a cream-like substance. For example, any creamy substance can be used as long as it can be used for forming the printed circuit board 300, such as solder paste, solder, or metal substance.

  As described above, the squeegee (not shown) moves on the top of the cartridge 200 on which the mask 100 (see FIG. 2) is mounted and applies the substance, so that the substance is placed at a position corresponding to the circuit pattern of the printed circuit board 300. Can be applied.

  According to the printing apparatus 400 according to the embodiment of the present invention, the circuit pattern can be printed by providing the cartridge 200 on which the mask 100 (see FIG. 2) is mounted on the printed circuit board 300. At this time, the cartridge 200 to which the mask 100 (see FIG. 2) is attached is used by being placed on the printed circuit board 300 after being inserted into the printing apparatus 400, and modified to the conventional printing apparatus 400. Can be applied without. In addition, since the printing apparatus 400 according to the embodiment of the present invention can remove the mask 100 (see FIG. 2) from the cartridge 200, various masks having different pattern hole shapes can be used.

  FIG. 2 is an exemplary view illustrating a mask according to an embodiment of the present invention.

  Referring to FIG. 2, the mask 100 includes a metal part 110, a mesh part 120, and a mask frame part 130. The mask 100 can be provided on the upper surface of the printed circuit board 300 (see FIG. 1).

  The metal part 110 may be an area where a cream-like substance such as a solder paste is applied on the upper part in order to form a circuit pattern in the circuit area of the printed circuit board. The metal part 110 can be formed of a metal having an elastic force that can be pulled or shrunk to a certain length. For example, the metal part 110 is preferably formed of a nickel (Ni) material.

  The metal part 110 preferably includes a pattern region 111 and a mask dummy region 113.

  The pattern region 111 preferably includes a pattern hole 112 in the form of a circuit pattern for forming a circuit pattern in the circuit region of the printed circuit board 300 (see FIG. 1).

  The mask dummy area 113 is preferably formed outside the pattern area 111 and includes a mask recognition mark 114. Here, the mask recognition mark 114 is for recognizing the position of the metal part 110.

  The mesh portion 120 can be formed outside the mask dummy region 113. That is, the mesh part 120 is formed outside the inclined surface of the metal part 110. The mesh part 120 is preferably formed of a polyester material. The mesh part 120 can be bonded to and bonded to the metal part 110. For example, the mesh part 120 and the metal part 110 are preferably bonded by epoxy.

  The mesh part 120 can form a hanger 121 to which a force is applied from the outside in order to adjust the size of the metal part 110 on the slope. The hanger 121 can be bonded to the slope of the mesh portion 120 with an adhesive such as epoxy. The hanger 121 can be connected to the cartridge 200 (see FIG. 5) later by a high tension yarn 221 (see FIG. 7) or the like.

  The mask frame part 130 can be formed outside the mesh part 120. The mask frame part 130 is a part coupled to the cartridge 200 (see FIG. 5). The mask 100 can be mounted on the cartridge 200 (see FIG. 5) by coupling the mask frame portion 130 and the cartridge 200 (see FIG. 5). A mask fastening portion 131 can be formed on the mask frame portion 130. The mask frame part 130 can be screwed to the cartridge 200 (see FIG. 5) by the mask fastening part 131. However, this is only an example, and is not limited to the form in which the mask frame unit 130 and the cartridge 200 (see FIG. 5) are coupled. That is, the method for combining the mask 100 and the cartridge 200 (see FIG. 5) can be easily changed by those skilled in the art.

  FIG. 3 is an exemplary view showing a longitudinal section of a mask according to an embodiment of the present invention.

  FIG. 3 illustrates a longitudinal section of the mask 100, and mesh portions 120 are formed on both sides of the metal portion 110. In addition, mask frame portions 130 are formed on both sides of the mesh portion 120. The hanger 121 can be formed on the slope of the mesh part 120 located between the metal part 110 and the mask frame part 130.

  FIG. 4 is an exemplary view showing a cross section of a mask according to an embodiment of the present invention.

  FIG. 4 illustrates a cross section of the mask 100, and mask frame portions 130 are formed on both sides of the mesh portion 120. In addition, a hanger 121 formed in the horizontal direction can be formed on the upper portion of the mesh portion 120. The cross section of the hanger 121 can be formed in a form in which the center has the highest height. A central portion having the highest height of the hanger 121 can be a portion to be connected to the high tension yarn 221 (see FIG. 7). That is, the center portion of the hanger 121 can be a portion to which a vertical force is applied by the cartridge 200 (see FIG. 5).

  FIG. 5 is an exemplary view showing a cartridge according to an embodiment of the present invention.

  The cartridge 200 is mounted with the mask 100 (see FIG. 2), and is inserted into the upper part of the printed circuit board 300 (see FIG. 1) mounted on the printing apparatus. The cartridge 200 is a device for adjusting the size of the metal portion 110 (see FIG. 2) of the mask 100 (see FIG. 2). That is, the cartridge 200 can adjust the size of the pattern hole 112 (see FIG. 2) of the mask 100 (see FIG. 2). The cartridge 200 can move the hanger 121 (see FIG. 2) formed on the mesh portion 120 (see FIG. 2) up and down in order to adjust the size of the mask 100 (see FIG. 2).

  Referring to FIG. 5, the cartridge 200 preferably includes a cartridge frame part 210, a rotating part 220, a driving part 230, and a fixing part 240.

  The cartridge frame unit 210 can surround the inclined surface of the mask 100 (see FIG. 2) to be mounted, and can fix the mask 100 (see FIG. 2) to the cartridge 200. The cartridge frame part 210 can be attached to the cartridge 200 by fastening with the mask frame part 130 (see FIG. 2). For example, a cartridge fastening part 211 formed on the cartridge frame part 210 and a mask fastening part 131 (see FIG. 2) formed on the mask frame part 130 (see FIG. 2) can be fastened together by fastening means. . At this time, the fastening means may be a screw. However, the fastening method between the cartridge frame part 210 and the mask frame part 130 (see FIG. 2) is not limited to this, and can be easily changed by those skilled in the art.

  The rotating part 220 can be connected to the cartridge frame part 210. The rotating part 220 can be connected to the cartridge frame part 210 by a predetermined structure. The rotating part 220 can be formed on the inclined surface of the cartridge frame part 210 with a predetermined distance. Further, the rotating part 220 can be formed so as to be perpendicular to each of the inclined surfaces of the cartridge frame part 210. Further, the rotating part 220 can be formed so as to be vertically parallel to the hanger 121 (see FIG. 2) of the mask 100 (see FIG. 2) attached to the cartridge 200. That is, the cartridge 200 includes four hangers 121 (see FIG. 2) formed on the inclined surface of the mask 100 (see FIG. 2) and four rotating portions 220 formed so as to be vertically parallel to each other. Is preferred. The rotating part 220 can be connected to the hanger 121 (see FIG. 2) of the mask 100 (see FIG. 2) by a high-tensile thread 221 (see FIG. 7). The rotation of the rotary unit 220 causes the high tension yarn 221 (see FIG. 7) to move upward, so that the hanger 121 (see FIG. 2) of the mask 100 (see FIG. 2) connected by the high tension yarn 221 (see FIG. 7). Can be moved to the top. Further, the high tension yarn 221 (see FIG. 7) moves downward by the rotation of the rotating unit 220, so that the hanger 121 (see FIG. 2) of the mask 100 (see FIG. 2) can be moved downward.

  The driving unit 230 can be formed on the outer side of the cartridge frame unit 210. The driving unit 230 can be mechanically or electrically connected to the rotating unit 220. The driving unit 230 may transmit a driving signal so that the rotating unit 220 can rotate or stop. In addition, the driving unit 230 can control the rotation direction of the rotating unit 220. For example, the driving unit 230 preferably includes a motor. The driving unit 230 controls the movement of the rotating unit 220 based on position data received from one or more cameras 260 (see FIG. 7) for photographing the mask 100 (see FIG. 2) or the printed circuit board 300 (see FIG. 1). can do. That is, the driving unit 230 uses the position data supplied from the camera 260 (see FIG. 7) and the mask recognition mark 114 (see FIG. 2) formed on the mask 100 (see FIG. 2) and the printed circuit board 300 (see FIG. 2). The position coordinates of a substrate recognition mark (not shown) formed on (see FIG. 1) are detected. Thereafter, the driving unit 230 determines the degree of distortion between the printed circuit board 300 (see FIG. 1) and the mask 100 (see FIG. 2) based on the detected position coordinates. As a result of the determination, if the mask recognition mark 114 (see FIG. 2) and the substrate recognition mark (not shown) do not match, the driving unit 230 determines that the mask recognition mark 114 (see FIG. 2) and the substrate recognition mark (not shown). Depending on the degree of distortion, a driving signal for driving the rotating unit 220 can be transmitted to the rotating unit 220.

  The fixing part 240 is connected to the cartridge frame part 210 by a predetermined structure, and can be formed to be separated from the cartridge frame part 210 by a predetermined distance. The fixing part 240 can be formed in the cartridge frame part 210 in parallel to the horizontal direction with a predetermined interval. The lower surface of the fixing portion 240 presses the mesh portion 120 (see FIG. 2) downward to prevent the mesh portion 120 (see FIG. 2) of the mask 100 (see FIG. 2) from moving upward. . The fixing portion 240 can be pressed with a force that allows the mesh portion 120 (see FIG. 2) to be horizontal and move horizontally.

  In the fixing portion 240, as the hanger 121 (see FIG. 2) of the mask 100 (see FIG. 2) moves upward, the metal portion 110 (see FIG. 2) of the mask 100 (see FIG. 2) moves to the hanger 121 (see FIG. 2). ) Can be prevented from being lifted up along the top. When the mesh part 120 (see FIG. 2) formed with the hanger 121 (see FIG. 2) and the hanger 121 (see FIG. 2) is moved upward by the fixing part 240, it is connected to the mesh part 120 (see FIG. 2). The metal part 110 (see FIG. 2) having a high elastic force can be expanded in the left-right direction.

  The size of the mask 100 (see FIG. 2) mounted on the cartridge 200 can be adjusted by the cartridge 200 thus formed.

  FIG. 6 is an exemplary view illustrating a cartridge on which a mask according to an embodiment of the present invention is mounted.

  Referring to FIG. 6, the mask 100 can be attached to the cartridge 200.

  First, the mask 100 is disposed below the cartridge 200. Thereafter, after the mask fastening part 131 (see FIG. 2) of the mask frame part 130 (see FIG. 2) and the cartridge fastening part 211 of the cartridge frame part 210 are aligned, the fastening means 270 can fasten them together. With such a method, the mask 100 can be mounted on the cartridge 200.

  FIG. 7 is an exemplary view showing a cross section of a cartridge according to an embodiment of the present invention.

  Referring to FIG. 7, it is an exemplary view showing a cross section of the cartridge 200 on which the mask 100 is mounted.

  The mask 100 can be attached to the cartridge 200. At this time, the mask 100 and the cartridge frame part 210 of the cartridge 200 can be fastened to each other by the fastening means 270. As described above, the mask 100 can be fixed by being attached to the cartridge 200.

  The cartridge 200 has a rotating part 220 formed on one side of the cartridge frame part 210. The rotating unit 220 may be a roller, for example. A high tension yarn 221 can be wound around the rotating unit 220. A hanger 121 of the mask 100 can be disposed below the rotating unit 220. The high tension yarn 221 of the rotating unit 220 can be connected to the center of the hanger 121 of the mask 100.

  The cartridge 200 preferably further includes a stopper 250. The stopper 250 can limit the range of movement of the hanger 121 of the mask 100 that moves upward by the rotating unit 220. The stopper 250 can be formed on one side of the cartridge frame part 210. The stopper 250 is preferably formed so as to protrude from one side of the cartridge frame portion 210 to an upper portion corresponding to a predetermined height of the hanger 121 of the mask 100. At this time, the height at which the stopper 250 is formed preferably corresponds to the maximum movement range of the hanger 121 of the mask 100. Accordingly, the stopper 250 can restrict the hanger 121 of the mask 100 so that it moves within a preset movement range and cannot move to a position higher than the set movement range.

  The fixing part 240 can prevent the mask 100 from being lifted upward along the hanger 121 as the hanger 121 of the mask 100 moves upward. When the hanger 121 is moved upward by the fixing part 240, the mesh part 120 of the mask 100 is moved to the left and right, and thereby the metal part 110 having elastic force can be expanded in the left and right direction.

  The fixing unit 240 can include a camera insertion unit 241. The fixing unit 240 has a camera mounted on the lower side, and the camera is a space that is opened so as to photograph the mask 100 or the printed circuit board 300 (see FIG. 1) positioned on the lower side of the fixing unit 240. The insertion part 241 can be formed.

  The cartridge 200 preferably further includes a camera 260. The camera 260 can be attached to a camera insertion part 241 formed at the lower part of the fixing part 240.

  The camera 260 can take an image of the mask 100 and the printed circuit board 300 (see FIG. 1) located at the bottom. At this time, the camera 260 can simultaneously photograph the mask recognition mark 114 (see FIG. 2) formed on the mask 100 and the substrate recognition mark (not shown) formed on the printed circuit board 300 (see FIG. 1). it can.

  The camera 260 attached to the cartridge 200 can take an image of only the mask 100 positioned at the bottom, and a large number of cameras attached to the cartridge 200 other than the cartridge 200 can take an image of the printed circuit board 300 (see FIG. 1). . At this time, a large number of cameras 260 are moved from the driving unit 230 according to the position coordinates, and the mask recognition marks 114 (see FIG. 2) formed on the mask 100 and the substrate recognition marks formed on the printed circuit board 300 (see FIG. 1). (Not shown) can be taken separately.

  At this time, the position data photographed by the camera 260 is transmitted to the drive unit 230 (see FIG. 6).

  Although not shown in the embodiment of the present invention, the cartridge 200 preferably includes a drive unit 230 (see FIG. 6). The driving unit 230 (see FIG. 6) can control the movement of the mask 260 by controlling the movement and photographing of the camera 260, and can control the movement of the rotating unit 220 based on the position data supplied from the camera 260.

  FIG. 8 is an exemplary view showing a cross section of a cartridge according to another embodiment of the present invention.

  Referring to FIG. 8, it is an exemplary view showing a cross section of the cartridge 200 to which the mask 100 is attached.

  The mask 100 can be attached to the cartridge 200. At this time, the hanger 121 of the mask 100 and the rotating part 220 of the cartridge 200 can be connected by the high tension yarn 221. As the rotating part 220 is rotated, the high-tensile yarn 221 is wound around the rotating part 220 and lifted upward, whereby the hanger 121 moves upward. Thereby, the mesh part 120 adhere | attached on the hanger 121 can also move to upper part. At this time, the hangers 121 formed on the slope of the mask 100 can all be moved upward by the rotating part 220 formed on the slope of the cartridge 200. At this time, only the mesh part 120 to which the hanger 121 is connected is vertically moved by the fixing part 240 of the cartridge 200, and the remaining mask 100 region is horizontally moved. That is, the metal part 110 can be enlarged by moving horizontally on the slope.

  The printing apparatus according to the embodiment of the present invention can be used for all printing methods using a mask such as solder paste printing and solder ball bumping.

  A printing apparatus according to an embodiment of the present invention inserts a cartridge with a mask into a conventional printing apparatus and installs the cartridge on the printed circuit board, and then performs printing. After printing, the cartridge is separated from the printing apparatus. And can be removed. As described above, since the cartridge for adjusting the size of the mask can be removed, it is not necessary to separately modify the conventional printing apparatus.

  In addition, since the printing apparatus according to the embodiment of the present invention can remove the mask from the cartridge, various masks having different pattern hole shapes can be used.

  Further, even when there is a large size deviation or mask size error between the mask and the printed circuit board by the cartridge of the printing apparatus according to the embodiment of the present invention, the mask size can be adjusted and used. Therefore, the mask manufacturing cost can be reduced. Further, since the size of the mask can be adjusted by the cartridge, fine pitch bumping is possible, defects can be minimized, printability and uniformity can be improved, and reliability can be improved. .

  As described above, the present invention has been described in detail based on specific embodiments. However, this is for specifically describing the present invention, and the printing apparatus according to the present invention is not limited to this, and is applicable. Those skilled in the art will appreciate that various modifications and variations can be made without departing from the spirit and scope of the invention as set forth in the appended claims. .

  All simple variations and modifications of the present invention belong to the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

  The present invention is applicable to a printing apparatus that can perform uniform printing regardless of warping or shrinkage of the printed circuit board.

DESCRIPTION OF SYMBOLS 100 Mask 110 Metal part 111 Pattern area | region 112 Pattern hole 113 Mask dummy area | region 114 Mask recognition mark 120 Mesh part 121 Hanger 130 Mask frame part 131 Mask fastening part 200 Cartridge 210 Cartridge frame part 211 Cartridge fastening part 220 Rotation part 221 High tension thread 230 Driving unit 240 Fixing unit 241 Camera insertion unit 250 Stopper 260 Camera 270 Fastening means 300 Printed circuit board 400 Printing device 410 Main table 420 Fixed table

Claims (6)

A fixed table for fixing a printed circuit board on which a circuit pattern is formed and a substrate recognition mark is formed;
Located on the upper surface of the printed circuit board, a pattern hole for forming a circuit pattern is formed in a circuit area of the printed circuit board, and a metal portion on which a mask recognition mark is formed, and formed outside the inclined surface of the metal portion. And a mask including a mesh part on which a hanger to which a force for adjusting the size of the metal part is applied is formed,
A cartridge frame portion provided on an upper portion of the printed circuit board for fixing the mask, a rotating portion for connecting the hanger movably up and down to adjust the size of the mask, and rotating the rotating portion. A cartridge comprising a drive unit ;
See containing and a squeegee for applying the creamy substance by moving the upper surface of the mask horizontally,
The rotary unit is connected to the hanger of the mask by a high tension yarn, and the mask hanger is extended by moving the hanger of the mask upward through the rotation of the rotary unit. The printing apparatus according to claim 1 , wherein the driving unit determines whether the substrate recognition mark and the mask recognition mark are aligned and controls the cartridge to move the hanger according to the determination. The cartridge is
The printing apparatus according to claim 1 , further comprising a camera that photographs the substrate recognition mark and the mask recognition mark and supplies position data of the substrate recognition mark and the mask recognition mark to the driving unit. The cartridge is
The printing apparatus according to claim 1, further comprising a stopper that limits a vertical movement range of the hanger. The printed circuit board is:
A circuit region in which a circuit pattern is formed;
A dummy region formed outside the circuit region and formed with the substrate recognition mark;
The printing apparatus according to claim 1, comprising:   The printing apparatus according to claim 1, wherein the mask further includes a mask frame portion that is formed outside the mesh portion and is coupled to the cartridge.

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