JP2004291507A - Method for positioning screen printing plate and method for screen printing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for positioning a screen printing plate capable of improving productivity by simply positioning the screen printing plate without spending a long time. <P>SOLUTION: In this method for positioning the screen printing plate, a fixture 10 having a plurality of contact parts 13-15 which can be brought into contact with the outer side face 12 of a screen frame 11 is prepared in advance, and positioning parts 22-24 corresponding to the contact parts 13-15 of the fixture 10 are provided on the inner side face 21 of a fixing part 20 for the screen printing plate of a screen printing apparatus 45. Then, under a condition where the contact parts 13-15 are brought into contact with the outer side face 12 of the screen frame 11 of the screen printing plate 19 coated with a photosensitive resin, by setting an exposure mask in such a way that a printing pattern 18 comes to a predetermined position to the fixture 10, the printing pattern 18 is provided and the screen printing plate 19 is formed. Then, under a condition where the outer side face 12 of the screen frame 11 is brought into contact with the positioning parts 22-24 of the screen printing apparatus 45, the screen frame 11 is fixed on the inside of the fixing part 20 of the screen printing plate. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a screen plate is formed by providing a printing pattern at a predetermined position of a screen provided in a screen frame, and the screen plate is fixed inside a screen plate fixing portion provided in a screen printing apparatus. The present invention relates to an improved method and a screen printing method.
[0002]
[Prior art]
Glass used for automotive windshields, side glass, rear glass, etc. is glass that is curved in a two-dimensional or three-dimensional direction in a substantially rectangular or trapezoidal shape, and a black coating layer is provided on the periphery of the glass vehicle interior. It has been.
[0003]
The black coating layer is intended to improve the adhesion and durability of the adhesive used when assembling the glass to the body of an automobile, and to improve the appearance of the glass periphery. Is screen printed.
The black ceramic paint screen-printed on the surface of the glass plate is fired at about 600 ° C. to 700 ° C. when glass is formed.
[0004]
As a method for printing a black coating layer on a glass plate, a method using a screen printer is generally employed. In this screen printing machine, a screen plate is set for each print pattern, or as shown in FIG. 5, the screen plate 104 has a screen 101 stretched over a frame 100, and a resist 102 is formed on the screen 101. 102, the screen area other than the print area 103 is closed.
[0005]
The screen plate 104 is set above the glass plate 105 of a printing machine (not shown) at a predetermined interval. In this state, printing ink, that is, a black ceramic paint is put into the frame body 100, and the upper surface of the screen 101 is moved while being pressed with a resin or rubber spatula (not shown) called a squeegee.
As a result, the black ceramic paint that has passed through the screen of the printing region 103 is transferred to the glass plate 105 and the black coating layer 106 is printed.
[0006]
According to this screen printer, not only the black coating layer 106 but also, for example, a heat wire heater and a radio antenna necessary for the rear window glass can be printed by replacing the screen plate and ink.
[0007]
Here, the screen version will be described in detail. For making a screen plate, after a screen 101 having a predetermined mesh is stretched on the frame body 100, a liquid photosensitive resin (emulsion) is applied to one surface of the screen 101 with a predetermined thickness and dried to form a film or the like. The pattern is printed by irradiating the photosensitive resin with UV light or other exposure light through an exposure mask in which an exposure pattern is formed of a light-shielding material on a light-transmitting substrate. Created by removing.
[0008]
At this time, the screen 101 is configured to have a size sufficiently larger than the size of the print region 103 to be formed, and in the exposure (printing) process, the screen is visually observed so that the exposure mask is positioned at substantially the center of the screen. Alignment by is performed.
[0009]
For this reason, the accuracy of the printing pattern printing position in the plate making of the screen plate is relatively low and is different for each plate making, and when performing thick film printing, the printing area 103 provided on one surface of the screen 101 in the printing machine It is necessary to adjust the relative position of the glass plate 105 and the like to be printed.
[0010]
In order to perform this screen printing satisfactorily, a method for producing a screen plate with high accuracy is disclosed (for example, see Patent Document 1).
[0011]
[Patent Document 1]
Japanese Unexamined Patent Publication No. 2000-171981 (first page, FIG. 7)
[0012]
According to the method for producing a screen plate of Patent Document 1, as shown in FIG. 6, the mounting surface 110 of the plate / original plate setting table is provided with the positioning pin 111, and the positioning pin 111 is placed on the mounting surface 110. The frame 113 of the screen plate 112 is positioned.
Thereby, the screen 114 can be arranged in a state where it is positioned at a predetermined position.
[0013]
Next, the positive film 116 is fixed on the screen 114 so that the alignment mark 117 of the positive film (exposure mask) 116 is superimposed on the light emitted from the light emission position 115.
Thereby, the light transmission region 118 of the positive film 116 can be accurately positioned at a predetermined position of the screen 114.
By exposing a portion corresponding to the light transmission region 118 in this state, a printing region (hereinafter referred to as “printing pattern”) can be printed at a predetermined position on the screen 114 with high accuracy.
[0014]
The screen plate 112 on which the printing pattern is baked is placed in the screen plate fixing unit 121 of the printing machine 120 shown in FIG. 7 and fixed in a predetermined position, and then the glass plate 122 is fixed to the screen plate fixing unit 121. Place it below.
Printing ink is put in the frame 113 of the screen plate 112 and moved in the direction of the arrow while pressurizing the inner surface of the screen 114 with the squeegee 124, so that the printing ink that has passed the printing pattern 123 is transferred to the glass plate 122. A predetermined pattern is printed on the glass plate 122.
[0015]
[Problems to be solved by the invention]
According to the above publication, the printing pattern 123 can be accurately printed on the screen 114 of the screen plate 112 by using the positioning pins 111 and the alignment marks 117.
[0016]
However, in order to accurately print a predetermined pattern on the glass plate 122 using the screen plate 112, when the screen plate 112 is set and fixed to the screen plate fixing part 121 of the printing machine 120, It is necessary to position the screen plate 112 with high precision so that the printing pattern 123 of the screen 114 is accurately aligned with a predetermined position of the glass plate 122.
For this reason, it takes time to position the screen plate 112, which hinders productivity.
[0017]
The present invention provides a screen plate positioning method and a screen printing method capable of improving productivity and obtaining a printing position with high accuracy by performing positioning of the screen plate 112 easily and accurately without taking time. Is to provide.
[0018]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides, as described in the method for positioning a screen plate according to claim 1, a screen frame stretched on a screen frame for screen printing at a predetermined position of an object to be printed, The screen plate is formed by providing a printing pattern at a predetermined position of the screen in the screen plate coated with the photosensitive resin, and the screen frame is fixed inside the screen plate fixing portion provided in the screen printing apparatus. A method for positioning a screen plate, wherein a jig having a plurality of contact portions that can come into contact with the outer surface of the screen frame is prepared in advance, and the jig is attached to the inner surface of the screen plate fixing portion of the screen printing apparatus. A positioning portion corresponding to the contact portion is provided, and a screen is provided in which the photosensitive resin is applied to the contact portion of the jig. The screen plate is formed by providing the print pattern by setting an exposure mask so that the print pattern is in a predetermined position with respect to the jig while the outer surface of the screen frame of the plate is in contact. Next, by fixing the screen frame in a state where the outer surface of the screen frame is in contact with the positioning portion of the screen printing apparatus, the position of the printing pattern with respect to the jig and the printing pattern with respect to the screen plate fixing portion It is characterized in that the position of is the same.
[0019]
Further, according to the present invention, as described in the screen printing method of claim 4, a screen in which a screen is stretched on a screen frame and a photosensitive resin is applied in order to perform screen printing at a predetermined position of an object to be printed. A screen printing method using the screen plate provided with a printing pattern at a predetermined position of the screen in the plate, and moving the printing ink supplied to the upper surface of the screen while pressing with a squeegee. The screen plate is positioned by the screen plate positioning method described in any one of 3 above.
[0020]
In the screen plate positioning method and the screen printing method configured as described above, first, the outer surface of the screen frame is brought into contact with the contact portion of the jig, the outer surface is positioned as a reference, and then a printing pattern is provided on the screen. .
Therefore, when screen printing is performed with a screen plate, for example, after the screen plate is reversed or without reversing the screen plate, the outer surface of the screen frame is directly contacted with the positioning portion of the screen plate fixing portion of the screen printing apparatus. The printing pattern can be positioned at a predetermined position with respect to the screen plate fixing part simply by doing so.
Thereby, since the position of the printing pattern with respect to the jig is the same as the position of the printing pattern with respect to the screen plate fixing portion of the screen printing apparatus, the positioning of the printing pattern can be performed easily and accurately without taking time.
[0021]
The positioning method of the screen plate according to claim 2 is characterized in that the contact portion is provided so as to project toward the outer surface of the screen frame and at least two in a direction intersecting each other.
[0022]
Accordingly, the screen frame can be accurately positioned with respect to the two intersecting axes simply by contacting the outer surface of the screen frame with the contact portion and the positioning portion, so that the print pattern can be positioned more easily.
Thereby, the positioning of the print pattern can be easily performed without taking more time.
[0023]
According to a third aspect of the present invention, there is provided the screen plate positioning method, wherein the jig includes three contact portions, and two of the contact portions protrude in parallel with each other.
[0024]
As a result, the screen frame can be reliably positioned with respect to the two intersecting axes simply by bringing the outer surface of the screen frame into contact with the contact portion and the positioning portion, so that the print pattern can be positioned more easily.
Thereby, positioning of a printing pattern can be easily performed without taking much time.
[0025]
In addition, if the jig is a frame shape that surrounds the screen frame, the strength of the jig can be sufficiently ensured, so that when the outer surface of the screen frame abuts against the contact portion, the two axes intersecting each other The screen frame can be positioned more reliably.
Thereby, positioning of a printing pattern can be easily performed without taking much time.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. In each embodiment described below, the members and the like already described in FIGS. 1 to 4 are denoted by the same or corresponding reference numerals in the drawings, and the description is simplified or omitted.
[0027]
The screen plate positioning method and screen printing method of the first embodiment are shown in FIGS. 1 (A) to (C) and FIGS. 2 (A) to (B).
In FIG. 1A, a jig 10 is prepared in advance. The jig 10 includes a plurality of first to third contact portions 13 to 15 that can contact the outer surface 12 of the screen frame 11 (see (B)).
[0028]
In FIG. 1B, a screen 17 is stretched over the screen frame 11 and a photosensitive resin is applied thereto.
In FIG. 1C, the screen 17 and the screen frame 11 are housed in the jig 10, and the outer surface 12 of the screen frame 11 is in contact with the first to third contact portions 13 to 15, and the screen 17 is covered. By setting the exposure mask 17A on the printed matter (glass plate) side using a transparent tape or the like so that the print pattern is in a predetermined position with respect to the jig 10 (see FIG. 1C), and exposing and cleaning. A printing plate 18 is provided to form a screen plate 19. In FIG. 1C, the surface on the glass plate side faces upward.
Since the jig 10 is used to set the exposure mask 17A at a predetermined position on the screen 17, after the exposure mask 17A is set on the screen 17, the screen plate 19 is removed during the exposure and cleaning. The jig 10 may be removed.
[0029]
In FIG. 2A, the screen plate 19 is in an inverted state with respect to FIG. Thereby, in FIG. 2 (A), the surface at the side of a glass plate turns downward.
In FIG. 2B, the screen with the outer surface 12 of the screen frame 11 in contact with the first to third positioning portions 22 to 24 provided on the inner surface 21 of the screen plate fixing portion 20 of the screen printing machine 45. The screen frame 11 is fixed inside the plate fixing unit 20.
[0030]
The contents of FIGS. 1A to 1C and FIGS. 2A to 2B will be described in detail with reference to FIGS.
As shown in FIG. 3, the jig 10 has left and right side wall members 30, 31 arranged at a predetermined interval, and the front ends of the left and right side wall members 30, 31 are connected by a front connecting member 32, and the left and right side wall members By connecting the rear ends of 30, 31 with the rear connecting member 33, a frame-like body that surrounds the jig 10 is formed.
[0031]
The first and second contact portions 13 and 14 are provided on the inner side of the left side wall member 30 so as to project in parallel with each other, and the third contact portion 15 is provided on the inner side of the front connecting member 32.
Here, the left side wall member 30 and the front connecting member 32 are formed so as to intersect (orthogonal) each other.
[0032]
Thereby, the 1st-3rd contact parts 13-15 are arrange | positioned toward the outer surface 12 of the screen frame 11, and the 1st-2nd contact parts 13 and 14 and the 3rd contact part 15 are arranged. It can project in the direction which mutually cross | intersects.
Therefore, the screen frame 11 can be accurately positioned with respect to the two intersecting axes simply by bringing the outer surface 12 of the screen frame 11 into contact with the first to third contact portions 13, 14, 15. On the other hand, the exposure mask 17A is set so that the print pattern 18 of the screen 17 is at a predetermined position.
[0033]
The method of setting the exposure mask 17A so that the printed pattern 18 of the screen 17 is at a predetermined position with respect to the jig is not particularly limited as long as it can be set at an accurate position. For example, a method of aligning the four alignment marks 10A and the four alignment marks 17B provided on the exposure mask 17A may be employed (see FIG. 1C).
Therefore, in the case of the same print pattern 18, the print pattern 18 of the screen 17 is provided at the same position with respect to the jig 10 every time.
[0034]
Moreover, the intensity | strength of the jig 10 is fully securable by making the jig 10 into a frame-shaped body. Therefore, when the outer surface 12 of the screen frame 11 is brought into contact with the first to third contact portions 13 to 15, the screen frame 11 can be reliably positioned with respect to the two intersecting axes.
[0035]
On the other hand, the screen plate fixing part 20 of the screen printing device 45 has the left and right side wall members 40 and 41 arranged at a predetermined interval, and the front ends of the left and right side wall members 40 and 41 are connected by the front connecting member 42, By connecting the rear ends of the side wall members 40, 41 with the rear connecting member 43, a frame-like body that surrounds the screen plate fixing portion 20 is formed.
[0036]
The first and second positioning portions 22 and 23 are provided so as to protrude in parallel with each other on the inner side of the right side wall member 41, and the third positioning portion 24 is provided on the inner side of the front connecting member 42.
Here, the right side wall member 41 and the front connecting member 42 are formed so as to intersect (orthogonal) each other.
Thereby, the 1st-3rd positioning parts 22-24 are arrange | positioned so that it may face toward the outer surface 12 of the screen frame 11, and the 1st-2nd positioning parts 22 and 23 and the 3rd positioning part 24 are arranged. It can project in the direction which mutually cross | intersects.
[0037]
Thereby, the 1st-3rd positioning parts 22-24 are arrange | positioned so that it may face toward the outer surface 12 of the screen frame 11, and the 1st-2nd positioning parts 22 and 23 and the 3rd positioning part 24 are arranged. It can project in the direction which mutually cross | intersects.
Therefore, the screen frame 11 can be accurately positioned with respect to the two intersecting axes simply by bringing the outer surface 12 of the screen frame 11 into contact with the first to third positioning portions 22 to 24.
[0038]
Moreover, the strength of the screen plate fixing part 20 can be sufficiently ensured by making the screen plate fixing part 20 into a frame-like body. Therefore, when the outer surface 12 of the screen frame 11 is in contact with the first to third positioning portions 22 to 24, the screen frame 11 can be reliably positioned with respect to the two intersecting axes.
Therefore, in the case of the same print pattern 18, the print pattern 18 of the screen 17 is set at the same position with respect to the printing machine every time.
[0039]
As described above, the first to third contact portions 13 to 15 of the jig 10 and the first to third positioning portions 22 to 24 of the screen plate fixing portion 20 are symmetrical with respect to the imaginary line. It is comprised so that it may become.
That is, the positioning portions 22 to 24 are provided on the inner surface 21 of the screen plate fixing portion 20 at positions corresponding to the contact portions 13 to 15.
Thereby, the position of the printing pattern 18 with respect to the jig 10 is the same as the position of the printing pattern 18 with respect to the screen plate fixing unit 20.
[0040]
The screen plate 19 is stored in the jig 10 with the glass plate side facing upward, and the outer surface 12 of the screen frame 11 of the screen plate 19 is, for example, a cylinder (not shown) and an arrow (see FIG. 1C). It is made to contact | abut to the 1st-3rd contact parts 13-15.
In this state, after setting the exposure mask, the screen plate 19 is formed by providing the printing pattern 18 on the screen 17 by exposing and cleaning.
[0041]
Note that the surface of the screen plate 19 facing the glass plate faces upward in consideration of setting the exposure mask 17A and workability during exposure.
Therefore, in the case of the same print pattern 18, the print pattern 18 of the screen 17 is provided at the same position with respect to the jig 10 every time.
[0042]
Thereafter, as shown in FIG. 4, the screen plate 19 that is inverted so that the glass plate side surface of the screen plate 19 faces downward is placed in the screen plate fixing portion 20 of the screen printing device 45.
The outer surface 12 of the screen frame 11 of the screen plate 19 accommodated in the screen plate fixing portion 20 is moved as indicated by an arrow (see FIG. 2B) with a cylinder (not shown), for example, to form first to third. It is made to contact | abut to the positioning parts 22-24.
The screen printing device 45 performs screen printing by moving the printing ink supplied to the upper surface of the screen 17 while pressing it with a squeegee.
[0043]
As described above, after the screen frame 11 is positioned by the first to third contact portions 13 to 15 of the jig 10, the printing pattern 18 is provided on the screen 17, and when screen printing is performed, the screen plate 19 is replaced with the screen plate 19. Positioning can be performed by the first to third positioning portions 22 to 24 of the fixed portion 20.
Thereby, positioning of the printing pattern 18 can be easily performed without taking time.
Therefore, in the case of the same print pattern 18, the print pattern 18 of the screen 17 is set at the same position with respect to the printing machine every time.
[0044]
Further, by adopting the jig 10 and the screen plate fixing portion 20, even if the screen frame 11 of the screen plate 19 is distorted before coming into contact with the jig 10, the printing pattern 18 with respect to the screen printing device 45 is avoided. Can be accurately positioned at the same position every time.
[0045]
After the positioning of the printing pattern 18 is completed, a glass plate 46 (see FIG. 4) as a printing object is placed in a fixed position on the screen printing device 45, and then printing ink is put into the frame of the screen plate 19, and the squeegee 47 ( A predetermined pattern is printed on the glass plate 46 by moving in the direction of the arrow while pressurizing the inner surface of the screen 17 in FIG. 2 (B).
As a result, printing can be performed at the same position on the glass plate every time.
[0046]
In the above embodiment, the example in which the left wall member 30 and the front connecting member 32 of the jig 10 are formed to be orthogonal to each other has been described. However, the left wall member 30 and the front connecting member 32 are crossed so as not to be orthogonal to each other. Similarly, the example in which the left side wall member 40 and the front connection member 42 of the screen plate fixing portion 20 are formed to be orthogonal to each other has been described. However, the left side wall member 40 and the front connection member 42 It is also possible to cross each other so as not to be orthogonal.
[0047]
Moreover, although the said embodiment demonstrated the example which equipped the jig 10 with the 1st-3rd contact parts 13-15, it is not restricted to three contact parts, For example, two may be sufficient. Moreover, although the example which provided the 1st-3rd positioning parts 22-24 in the screen plate fixing | fixed part 20 was demonstrated, it is not restricted to three contact parts, For example, two may be sufficient.
Furthermore, although the said embodiment demonstrated the example which used the printing target object as the glass plate 46, it is not restricted to this, It is also possible to apply to another printing target object.
[0048]
The present invention is not limited to the above-described embodiment, and appropriate modifications, improvements, and the like are possible. The jig, the first to third contact portions, and the screen plate fixing exemplified in the above-described embodiment. The material, shape, dimension, form, number, arrangement location, thickness dimension, and the like of the first and third positioning portions are arbitrary and are not limited as long as the present invention can be achieved.
[0049]
【The invention's effect】
As described above, according to the present invention, as described in the screen plate positioning method of claim 1 and the screen printing method of claim 4, first, the outer surface of the screen frame is first brought into contact with the contact portion of the jig. Then, after positioning with respect to the outer surface, a print pattern is provided on the screen.
[0050]
Therefore, when screen printing is performed with the screen plate, the print pattern can be positioned at a predetermined position with respect to the screen plate fixing portion only by bringing the outer surface into contact with the positioning portion of the screen plate fixing portion.
As a result, the position of the printing pattern with respect to the jig is the same as the position of the printing pattern with respect to the screen plate fixing part, so positioning of the printing pattern can be performed easily and accurately without taking time, and production The printing position can be obtained with high accuracy.
[0051]
According to the present invention, as described in the screen plate positioning method according to claim 2, each contact portion is projected toward the outer surface of the screen frame and at least two are projected in a direction intersecting each other. . As a result, the screen frame can be accurately positioned with respect to the two intersecting axes simply by bringing the outer surface of the screen frame into contact with the contact portion, so that the print pattern can be positioned more easily.
Thereby, positioning of a printing pattern can be easily performed without taking more time, and productivity can be improved more.
[0052]
In the positioning method of the screen plate of claim 3, three contact portions are provided on the jig, and two of the contact portions are projected in parallel with each other. As a result, the screen frame can be reliably positioned with respect to the two intersecting axes simply by bringing the outer surface of the screen frame into contact with the contact portion, so that the print pattern can be positioned more easily.
Thereby, positioning of a printing pattern can be easily performed without taking much time, and productivity can be further improved.
[Brief description of the drawings]
FIGS. 1A to 1C are diagrams illustrating a method for positioning a screen plate according to the present invention.
FIGS. 2A to 2B are views for explaining a method of positioning a screen plate according to the present invention.
FIG. 3 is a plan view showing a jig and a screen plate fixing part used in the screen plate positioning method according to the present invention.
FIG. 4 is a perspective view showing a screen plate fixing portion and a screen plate used in the method for positioning a screen plate according to the present invention.
FIG. 5 is a perspective view illustrating a screen plate.
FIG. 6 is a diagram illustrating a method of printing a print pattern on a screen of a conventional screen plate.
FIG. 7 is a diagram for explaining a conventional screen plate positioning method;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Jig 10A Position alignment mark 11 Screen frame 12 Outer side surface 13 1st contact part (contact part)
14 Second contact part (contact part)
15 3rd contact part (contact part)
17 Screen 17A Exposure mask 17B Position mark 18 Print pattern 19 Screen plate 20 Screen plate fixing portion 21 Inner side surface 22 First positioning portion (positioning portion)
23 Second positioning part (positioning part)
24 3rd positioning part (positioning part)
45 Screen printer 46 Glass plate (printing object)

Claims (4)

In order to perform screen printing at a predetermined position of a printing object, the screen plate is formed by providing a printing pattern at a predetermined position of the screen in a screen plate in which a screen is stretched on a screen frame and a photosensitive resin is applied. A screen plate positioning method for fixing the screen frame inside a screen plate fixing portion provided in a screen printing apparatus,
Prepare a jig having a plurality of contact portions that can come into contact with the outer surface of the screen frame in advance, and provide a positioning portion corresponding to the contact portion of the jig on the inner surface of the screen plate fixing portion of the screen printing apparatus. And
An exposure mask is set so that the printed pattern is in a predetermined position with respect to the jig in a state where the outer surface of the screen frame of the screen plate coated with the photosensitive resin is in contact with the contact portion of the jig. By providing the printing pattern to form the screen plate,
Next, by fixing the screen frame in a state where the outer surface of the screen frame is in contact with the positioning portion of the screen printing apparatus, the position of the print pattern with respect to the jig and the position of the print pattern with respect to the screen plate fixing portion A method for positioning a screen plate, wherein the position is the same. 2. The method for positioning a screen plate according to claim 1, wherein the contact portion is provided so as to protrude toward an outer side surface of the screen frame and in a direction crossing each other. 3. The method for positioning a screen plate according to claim 2, wherein the jig has three contact portions, and two of the contact portions protrude in parallel with each other. In order to perform screen printing at a predetermined position of a printing object, the screen plate in which a screen is stretched on a screen frame and a printing pattern is provided at a predetermined position of the screen in a screen plate coated with a photosensitive resin is used. A screen printing method of moving the printing ink supplied to the upper surface of the screen while pressing with a squeegee,
A screen printing method, wherein the screen plate is positioned by the method of positioning a screen plate according to any one of claims 1 to 3.

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