KR20100060855A - Mask for printing and printing apparatus having the same - Google Patents

Abstract

PURPOSE: A printing mask and a printing device including the same are provided to ensure fine pitch and reliability of a printed circuit board by preventing the destruction of a bump due to the drooping of a mask. CONSTITUTION: A printing mask comprises a mask body(100) and a separation member(104). A plurality of openings are formed in the mask body. The separator member is arranged in a part of the mask body in order to automatically separate a printed circuit board(300) from a mask in which printing is completed.

Description

Mask for printing and printing apparatus having the same {Mask for printing and printing apparatus having the same}

The present invention relates to a printing apparatus, and more particularly, to a printing mask and a printing apparatus having the same, which can automatically separate the mask and the printed circuit board during printing by providing a separating member in the printing mask.

Printed circuit boards are widely used in all electronic products, from home appliances to advanced communication devices. Such a printed circuit board serves to electrically connect various electronic components, such as semiconductor chips and resistance chips.

The printed circuit board includes a circuit pattern for electrically connecting a plurality of electronic components to each other. Here, the printed circuit board includes a bump electrically connected to the circuit pattern. In this case, the electronic component is electrically connected to the bump and mounted on the printed circuit board. As a result, the electronic component and the circuit pattern are electrically connected to each other.

The bump may be formed through a plate printing technique. Here, in the bump forming method using a flat plate printing method, first, a thin metal mask of several tens of um is aligned on a printed circuit board, and then conductive solder paste is disposed on the upper surface of the metal mask. Thereafter, as the squeegee presses and moves the upper portion of the metal mask, the solder paste may be filled with the openings of the metal mask to form bumps on the printed circuit board.

After the bumps are formed, the metal mask is separated from the printed circuit board. As such, the bumps can be easily manufactured through a plate printing technique.

However, the metal mask may adhere to the printed circuit board due to the viscous force of the solder paste. As a result, when the metal mask is separated from the printed circuit board, the metal mask sags downward, that is, toward the printed circuit board, and thus bumps formed on the printed circuit board may be damaged.

Here, the breakage of the bumps may cause a height deviation of the bumps, which may cause product defects, and furthermore, the reliability of electronic products employing the bumps may be reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printing mask and a printing apparatus having the same, which can automatically separate the mask and the printed circuit board during printing by providing a separating member having elastic restoring force.

In order to achieve the above technical problem, an aspect of the present invention provides a mask for printing. The mask for printing includes a mask body including a first area having a plurality of openings formed therein and a second area disposed around the first area; And a separating member disposed on a portion of the mask body corresponding to the second region and having an elastic restoring force to automatically separate the printed circuit board from the mask of the region where printing is completed.

Here, the separating member may have a form protruding from a portion of the lower surface of the mask body.

In addition, the cross section of the separation member may have any one of the shape of oval, circular, triangular, square and polygonal.

In addition, the separating member may have a stripe shape or a plurality of dot shapes.

In addition, the mask body may have a fixing groove in which a part of the separating member is inserted and fixed.

The apparatus may further include an adhesive member interposed between the separation member and the mask body.

The apparatus may further include a protection member covering the separation member.

In addition, the separating member may include a first separating member and a second separating member having a width larger than the width of the first separating member.

In addition, the separating member is a butadiene styrene-based rubber, butyl rubber, nitrile-based rubber, chloroprene rubber, urethane-based rubber, a single rubber of the silicone rubber and fluorine-based rubber or at least two or more of them are mixed rubber Can be formed.

In order to achieve the above technical problem, an aspect of the present invention provides a printing apparatus having a printing mask. The printing apparatus includes a mask body including a first area having a plurality of openings formed therein and a second area disposed around the first area, and a portion of the mask body corresponding to the second area, and printing is finished. A printing mask comprising a separating member having an elastic restoring force to automatically separate the printed circuit board from the mask of the region; A table disposed under the printing mask and seated with a printed circuit board; And a squeegee portion which compresses and moves the upper portion of the printing mask and prints a pattern corresponding to the opening of the printing mask on the printed circuit board.

In addition, the separating member maintains a constant distance between the mask and the printed circuit board before printing and after completion of printing, and may closely adhere the mask and the printed circuit board to each other during printing.

In addition, the separating member may have a stripe shape having a length parallel to the moving direction of the squeegee portion.

In addition, the separating member may have a dot shape arranged in a direction parallel to the moving direction of the squeegee portion.

The printing mask and the printing apparatus of the present invention can automatically separate the mask and the printed circuit board during printing by providing a separating member having an elastic restoring force at the bottom of the mask during printing, so that the solder paste already printed on the substrate Can be prevented from adhering on the mask, thereby preventing the mask from sagging when the printed circuit board is separated from the mask.

In addition, since the separating member serves to support the mask, it is not necessary to separately provide a supporting member for supporting the mask.

In addition, since the mask can be prevented from sagging and the collapse of the bump due to the sagging of the mask can be prevented, a printed circuit board having fine pitch and reliability can be manufactured.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings of a printing mask and a printing apparatus having the same. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Accordingly, the invention is not limited to the embodiments described below and may be embodied in other forms. In the drawings, the size and thickness of the device, etc.

It may be presented in a long way. Like numbers refer to like elements throughout.

1 is a plan view of a printing mask according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

1 and 2, the mask M for printing includes a mask body 100 including a first area 100a and a second area 100b disposed around the first area 100a. The separating member 104 is disposed below the mask body 100 of the second region 100b.

Here, the first region 100a may be arranged in plural in the mask body 100. In this case, the first region 100a may correspond to a single printed circuit board. That is, after the batch printing operation is performed on a plurality of printed circuit boards through the mask M, the plurality of printed circuit boards may be separately separated to manufacture a single printed circuit board.

The first region 100a may include a plurality of openings 101 penetrating the mask body 100 and blocking portions 102 disposed around the openings 101. In this case, when the printing operation is performed on the substrate using the mask M, a predetermined pattern may be formed on the substrate at a position corresponding to the opening 101.

The second region 100b is provided with a support 103 extending from the blocking portion. The support part 103 serves to connect the plurality of first regions 100a to each other. Substantially, the support 103 serves to support the mask body 100.

Examples of the material forming the mask body 100 may be a single metal, an alloy and a polymer impregnated with a reinforcing material. Here, the metal may be nickel, and the reinforcing material may be glass fiber or polymer. However, in the embodiment of the present invention, the material forming the mask body is not limited.

The separating member 104 is disposed on the mask body 100 corresponding to the second area 100b, that is, the support part 103, and automatically prints the printed circuit board on the mask M in the area where printing is completed. It serves to separate. To this end, the separating member 104 may be formed of a material having an elastic restoring force. Here, the separating member 104 may be any one of synthetic rubber, natural rubber, and mixtures thereof. Specifically, examples of the material for forming the separation member include butadiene styrene-based rubber, butyl-based rubber, nitrile-based rubber, chloroprene-based rubber, urethane-based rubber, silicon-based rubber and fluorine-based rubber, or at least two or more of them. It may be a mixed mixed rubber.

In addition, the separating member 104 has a shape protruding from a portion of the support 103. Accordingly, when the mask M is aligned on the substrate before the printing operation, the mask body 100 and the substrate of the first region 100a maintain a predetermined distance from each other. On the other hand, the pressure is applied to the separating member 104 during the printing operation, the separating member 104 is contracted, so that the mask (M) and the substrate may be in close contact with each other. In addition, the pressure is removed in the area where the printing operation is completed, the separation member 104 is restored to its original state by the elastic restoring force so that the mask (M) and the substrate to maintain a predetermined distance from each other. That is, the mask M and the substrate are in close contact with each other by shrinkage of the separating member 104 during printing, and when the printing is completed, the mask M and the substrate are directly contacted by the elastic restoration of the separating member 104. The substrate is automatically separated.

The separating member 104 may have various forms. For example, the cross section of the separating member 104 may have any one of an ellipse, a circle, a triangle, a rectangle, and a polygon.

In addition, the separating member 104 may have a stripe shape across the mask body 100 or a dot shape arranged in plurality in plan view.

In addition, the mask body 100 may further include a fixing groove. In this case, the separating member may be inserted into the fixing groove and fixed to the mask body.

In addition, the mask M may further include a mask frame 120 for supporting the mask body 100 and a fixing member 110 for fixing the mask body 100 to the mask frame 120. have. As a result, the supporting force of the mask M can be improved, and the printing operation can be performed more easily.

Therefore, as the printing mask according to the embodiment of the present invention includes the separating member, the mask and the printed circuit board may be automatically separated during printing. As a result, the printed matter printed on the substrate can be prevented from adhering to the mask, thereby preventing the mask from sagging due to the adhesion of the mask when the substrate is separated from the mask.

In addition, since the separating member also serves to support the mask, it is not necessary to separately provide a supporting member for supporting the mask.

In addition, since the mask can be prevented from sagging and the collapse of the bump due to the sagging of the mask can be prevented, a printed circuit board having fine pitch and reliability can be manufactured.

3 and 4, the mask for printing of the second embodiment will be described. The second embodiment of the present invention has the same configuration as the first embodiment described above except for the separating member. Therefore, in the second embodiment of the present invention, repeated descriptions of the first embodiment will be omitted, and the same reference numerals are assigned to the same components.

3 is a plan view of a printing mask according to a second embodiment of the present invention.

4 is a cross-sectional view taken along the line II-II 'of FIG. 3.

3 and 4, the printing mask M includes a mask body 100 and a separating member 104 disposed under the mask body 100.

Here, the mask body 100 may include a first region 100a and a second region 100b. In this case, a plurality of openings 101 and blocking portions disposed around the openings 101 are disposed in the first region 100a. In addition, the support part 103 extending from the blocking part 102 is disposed in the second area 100b.

In addition, the separating member 104 may be disposed on the mask body 100 corresponding to the second region 100b, that is, a partial region of the support part 103.

Here, the separating member 104 may have an elastic restoring force in order to automatically separate the printed circuit board from the mask M in the region where printing is finished. For example, the material for forming the separating member 104 may be any one of a synthetic rubber, a natural rubber, and a mixture thereof. Specifically, examples of the material for forming the separation member include butadiene styrene-based rubber, butyl-based rubber, nitrile-based rubber, chloroprene-based rubber, urethane-based rubber, silicon-based rubber and fluorine-based rubber, or at least two or more of them. It may be a mixed mixed rubber.

A portion of the mask body 100 may sag downward due to its own load of the mask body 100. In particular, as the mask M is enlarged, the deflection due to the load of the mask body 100 may be more severe. Here, the center portion of the mask body 100 may be subjected to a greater load than the edge, so that the center portion of the mask body 100 may sag more than the edge. Accordingly, even if the separating member 104 is provided below the mask body 100, the separating member 104 is contracted by the load of the mask body 100, so that the mask body is already before printing. A portion of the 100 and the printed circuit board may not be kept in close contact with each other. For this reason, even after the printing is finished, the separation member 104 may not be elastically restored by the load of the mask body 100, and the mask body 100 may not be separated from the printed circuit board.

In consideration of this, the separating members 104 may be formed to have a large width to withstand the load of the central portion, but in this case, the separating member 104 is not contracted during the printing operation in the edge area, so that the mask body 100 ) And the printed circuit board may not be in close contact with each other, and thus, the printed material may not be formed in a desired shape in a desired area.

In order to improve this, the separating member 104 may include first and second separating members 104b having different widths. In this case, the second separating member 104b may have a larger width than the first separating member 104a. In this case, the second separating member 104b is disposed in a region that receives a lot of load, that is, a central portion of the mask body 100. That is, the second separating member 104b serves to automatically separate the printed circuit board from the mask body 100 and to support the mask body 100, thereby providing the mask body 100. Sagging can be prevented.

In the embodiment of the present invention, the second separation member 104b is illustrated and described as being disposed in the central portion of the mask body 100, but is not limited thereto. For example, the plurality of second separation members may be arranged uniformly in the mask body 100.

Therefore, in the embodiment of the present invention, the separation member is immersed to have a different width for each area according to the load received by the mask body, it is possible to prevent the mask body from sagging toward the printed circuit board due to the load. In addition, the printed circuit board can be separated more efficiently from the mask after printing.

In addition, the separating member may prevent sagging due to the load when the mask is enlarged, and may not include a support member for supporting the mask separately.

Hereinafter, the printing mask of the third embodiment will be described with reference to FIG. 5. The third embodiment of the present invention has the same configuration as the second embodiment described above except for the protection member. Therefore, in the third embodiment of the present invention, repeated description of the second embodiment will be omitted, and the same reference numerals are assigned to the same components.

5 is a sectional view of a printing mask according to a third embodiment of the present invention.

Referring to FIG. 5, the mask M for printing includes a mask body including a first region 100a having a plurality of openings 101 and a second region 100b disposed around the first region 100a. And a separating member 104 disposed in the mask body 100 corresponding to the second region 100b and the partial region of the support part 103. Here, the separating member 104 may include first and second separating members 104b having different widths. In this case, the second separating member 104b may have a larger width than the first separating member 104a.

The mask M may further include a protection member 106 covering the separation member 104. The protective member 106 may serve to prevent the separation member 104 from being damaged by a chemical or an external device such as an organic solvent during a printing operation and during the cleaning process of the mask M. In addition, the protection member 106 may serve to fix the separation member 104 to the mask body 100.

To this end, the protection member 106 may be made of a material having excellent chemical resistance and durability. Examples of the material for forming the protective member 106 may be Teflon resin, fluorine resin, epoxy resin, silicone resin, melamine resin, ester resin and acrylic resin.

The protection member 106 may be attached on the separation member in the form of a tape. Alternatively, the protective member 106 may be formed in a thin film form formed by deposition or coating.

In the embodiments of the present invention, the separating member has been described as being fixed by being inserted into the fixing groove formed in the mask body, but is not limited thereto.

6 and 7, a printing mask manufactured by another method of forming the separating member will be described.

Here, the fourth and fifth embodiments of the present invention have the same configuration as the first embodiment described above except for the separating member. Therefore, in the fourth and fifth embodiments of the present invention, repeated description of the first embodiment will be omitted, and the same reference numerals are assigned to the same components.

6 is a sectional view of a printing mask according to a fourth embodiment of the present invention.

Referring to FIG. 6, the mask M for printing 100 includes a first area 100a having a plurality of openings and a second area 100b disposed around the first area 100a. ) And a separation member 104 disposed on the mask body 100 corresponding to the second region, that is, a partial region of the support part 103. In this case, the separating member 104 may be formed through an exposure and development process after coating a rubber material on the mask body 100.

7 is a sectional view of a printing mask according to a fifth embodiment of the present invention.

Referring to FIG. 7, the mask M for printing includes a first area 100a having a plurality of openings and a second area 100b disposed around the first area 100a. And a separating member 104 disposed on the mask body 100 corresponding to the second region, that is, a partial region of the support part 103. In this case, the separating member 104 may be fixed to the mask body 100 by the adhesive member 107 provided between the mask body 100 and the separating member 104.

Accordingly, in the fourth and fifth embodiments, in order to fix the separating member to the printing mask, the mask body does not have to be provided with a fixing groove, so that the mask can be manufactured more easily.

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

8 is a cross-sectional view of a printing apparatus for a printed circuit board according to a sixth embodiment of the present invention.

Referring to FIG. 8, a printing apparatus for a printed circuit board may include a printing mask M, a table 200 disposed below the mask M, and compressively moving the table 200 on which the printed circuit board is seated and the upper portion of the mask M. It may include a squeegee portion 400 for printing a pattern corresponding to the opening 101 of the mask (M) on a printed circuit board.

Here, the mask M includes a mask body 100 and a separating member 104.

The mask body 100 includes a first region 100a and a second region disposed around the first region 100a. In the first region 100a, a plurality of openings 101 and a blocking unit 102 disposed around the openings 101 are disposed. A plurality of first regions 100a may be disposed in the mask body 100. In this case, the first area 100a may correspond to a single printed circuit board, and may collectively perform printing on a plurality of printed circuit boards through the mask body 100. The second region 100b is provided with a support 103 extending from the blocking unit 102.

The separating member 104 is disposed on the mask body corresponding to the second region 100b, that is, a partial region of the support part 103. The separating member 104 may be made of a material having an elastic restoring force in order to automatically separate the printed circuit board from the mask body 100 in the region where printing is completed.

The separating member 104 has a stripe shape having a length parallel to the moving direction of the squeegee portion 400 to be described later, or arranged in a dot form arranged in a direction parallel to the moving direction of the squeegee portion 400. It may have a form. As a result, the mask M may not be inclined to one side and may perform a printing operation, thereby improving the uniformity of the printed matter printed on the printed circuit board, that is, the bump.

When the separation member 104 is disposed in plural numbers, the separation members 104 may have different widths according to the load applied to the mask body 100. For example, the separating member 104 disposed in the center portion of the mask body 100 may have a larger width than the separating member 104 disposed in the edge region of the mask body 100.

In addition, the mask M may further include a mask frame 120 supporting the mask body 100 and a fixing member 110 for fixing the mask body 100 to the mask frame 120. Can be. As a result, the supporting force of the mask M can be improved, and the printing operation can be performed more easily.

In addition, although not shown in the drawing, the mask M may further include a protection member 106 covering the separation member 104. In addition, the mask M may further include a fixing groove for fixing the separation member 104.

The table 200 may be disposed under the mask M. FIG. The table 200 serves to seat and secure the printed circuit board 300 during a printing operation. In addition, although not shown in the drawings, the printing apparatus may include a moving member for moving the table 200. Accordingly, the table 200 may be aligned with the mask M by moving the printed circuit board.

The squeegee 400 compresses and moves the upper portion of the mask M to form a pattern on the printed circuit board 300. In other words, the squeegee 400 is disposed on the mask M. FIG. The squeegee 140 compresses and moves the upper portion of the mask M to fill the opening 101 of the mask M with a printed composition disposed on the mask M, for example, a solder paste. Bumps may be printed on the substrate 300.

Therefore, since the printing device for a printed circuit board according to the embodiment of the present invention includes a separating member at the bottom of the mask during printing, the process of separating the mask from the printed circuit board after finishing printing does not need to be performed separately. Not only does the deflection of the mask generated in the process of separating the mask from the printed circuit board occurs, but also the process can be further simplified.

In addition, since the deflection of the mask does not occur, it is possible to prevent the bump from collapsing, thereby manufacturing a printed circuit board having fine pitch and reliability.

Hereinafter, a process of printing a printing apparatus according to an embodiment of the present invention will be described in more detail with reference to FIGS. 9 to 12.

9 is a side view of a printing apparatus according to an embodiment of the present invention.

FIG. 10 is a cross-sectional view of region A of FIG. 9.

FIG. 11 is a cross-sectional view of region B of FIG. 9.

12 is a cross-sectional view of region C of FIG. 9.

9 and 10, the printed circuit board 300 is mounted on the table 200 of the printing apparatus. Here, the printed circuit board 300 may have various forms such as a single-sided printed circuit board, a double-sided printed circuit board and a multilayer printed circuit board, but is not limited in the embodiment of the present invention. Although not shown in the drawing, the printed circuit board 300 includes a pad part electrically connected to the circuit layer.

Subsequently, the mask M having the separating member is aligned on the printed circuit board 300. Here, the body of the mask (M) is spaced apart from the printed circuit board 300 by the separation member at a predetermined interval.

9 and 10, after applying the solder paste 302 on the mask M, the squeegee 400 is compressed and moved onto the mask M. Referring to FIG. At this time, in the process of printing the solder paste 302, the squeegee portion 400 to move the upper portion of the separation member with the mask (M).

Here, when the squeegee portion 400 passes over the mask M, the separating member 104 is contracted by the pressure of the squeegee portion 400 so that the mask M and the printed circuit board ( 300 is in contact with each other. At the same time, the solder paste 302 is filled in the opening of the mask M, and a bump 301 is formed on the pad portion of the printed circuit board 300.

9 and 11, after the squeegee 400 passes, the separating member 104 is restored to its original state by an elastic force, and the mask M and the printed circuit board 300 are automatically separated. do.

Here, as the mask M and the printed circuit board 300 are partially separated at the same time as the bump 301 is formed, the mask M is less affected by the viscous force of the solder paste 302. In addition, the mask M may be separated from the printed circuit board 300 without sagging.

In addition, as the mask M is automatically separated from the printed circuit board 300 in the process of printing, it is not necessary to consider factors for improving the print deflection, for example, the viscosity of the solder paste, the printing speed, and the printing pressure. Productivity can be improved while ensuring quality uniformity.

Referring to the drawings, the effect of the printing mask according to an embodiment of the present invention will be described in detail.

13 is a photograph of a bump printed using a conventional printing apparatus.

14 is a photograph of a bump printed using a printing apparatus according to an embodiment of the present invention.

As shown in FIG. 13, in the conventional printing apparatus, the printed bumps were collapsed in the process of separating the printed circuit board from the mask after finishing printing.

On the other hand, as shown in Figure 14, when the printed circuit board is automatically separated from the mask during printing, it can be seen that the printed bump does not collapse.

Therefore, as in the embodiment of the present invention, the mask is provided with a separating member to be separated from the printed circuit board automatically while printing is in progress, which occurs in the process of separating the mask from the printed circuit board as conventionally Since the mask does not sag, the damage of the bumps can be minimized and the manufacturing process of the printed circuit board can be further simplified.

In addition, since the deflection of the mask does not occur, it is possible to prevent the collapse of the bumps, thereby manufacturing a printed circuit board having a fine pitch and ensuring reliability.

1 is a plan view of a printing mask according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

3 is a plan view of a printing mask according to a second embodiment of the present invention.

4 is a cross-sectional view taken along the line II-II 'of FIG. 3.

5 is a sectional view of a printing mask according to a third embodiment of the present invention.

6 is a sectional view of a printing mask according to a fourth embodiment of the present invention.

7 is a sectional view of a printing mask according to a fifth embodiment of the present invention.

8 is a cross-sectional view of a printing apparatus for a printed circuit board according to a sixth embodiment of the present invention.

9 is a side view of a printing apparatus according to an embodiment of the present invention.

FIG. 10 is a cross-sectional view of region A of FIG. 9.

FIG. 11 is a cross-sectional view of region B of FIG. 9.

12 is a cross-sectional view of region C of FIG. 9.

13 is a photograph of a bump printed using a conventional printing apparatus.

14 is a photograph of a bump printed using a printing apparatus according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: mask body 100a: first region

100b: second region 101: opening

102: blocking portion 103: support portion

104: separating member 106: protective member

110: fixing member 120: mask frame

200: table 300: printed circuit board

400: squeegee

Claims (16)

A mask body including a first area having a plurality of openings formed therein and a second area disposed around the first area; And A separation member disposed on a portion of the mask body corresponding to the second area, the separation member having an elastic restoring force to automatically separate the printed circuit board from the mask in the area where printing is finished; Mask for printing comprising a. The method of claim 1, The separation member has a printing mask having a form protruding from a portion of the lower surface of the mask body. The method of claim 1, Cross section of the separating member is a printing mask having any one of the shape of oval, circle, triangle, rectangle and polygon. The method of claim 1, The separation member is a printing mask having a stripe form or a plurality of dot form arranged. The method of claim 1, The mask body is a printing mask having a fixing groove which is inserted and fixed part of the separation member. The method of claim 1, Printing mask further comprising an adhesive member interposed between the separation member and the mask body The method of claim 1, And a protective member covering the separation member. The method of claim 1, The separating member includes a first separating member and a second separating member having a width larger than the width of the first separating member. The method of claim 1, The separating member is for printing formed of butadiene styrene-based rubber, butyl-based rubber, nitrile-based rubber, chloroprene-based rubber, urethane-based rubber, silicon-based rubber and fluorine-based rubber of a single type of rubber or mixed rubber of at least two or more thereof Mask. A mask body including a first region having a plurality of openings and a second region disposed around the first region, and a mask disposed in a portion of the mask body corresponding to the second region and finished printing A printing mask comprising a separating member having an elastic restoring force in order to automatically separate the printed circuit board; A table disposed under the printing mask and seated with a printed circuit board; And A squeegee portion which compresses the upper portion of the printing mask and prints a pattern corresponding to the opening of the printing mask on the printed circuit board; Printing apparatus comprising a. The method of claim 10, And the separating member maintains a constant distance between the mask and the printed circuit board before printing and after completion of printing, and adheres the mask and the printed circuit board to each other during printing. The method of claim 10, The separating member has a stripe shape having a length parallel to the moving direction of the squeegee portion. The method of claim 10, And the separating member has a dot shape arranged in a direction parallel to a moving direction of the squeegee portion. The method of claim 10, And the first area corresponds to one printed circuit board. The method of claim 10, The separating member includes a first separating member and a second separating member having a width larger than the width of the first separating member. The method of claim 10, And a protective member covering the separation member.

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