JP5492757B2 - Filter device for ink jet printer, method of manufacturing filter device, and filter - Google Patents

Description

  Embodiments described herein relate generally to a filter device for an inkjet printer, a method for manufacturing the filter device, and a filter.

  The ink jet printer includes a filter device for filtering ink supplied to the ink jet head. This filter device is interposed between the ink tank and the inkjet head, and removes impurities in the ink by a filter such as a metal mesh or a nonwoven fabric.

  An example of the metal film filter is a nickel thin film formed by electroforming. By forming the filter by electroforming, no burr is generated in the filter, and the filter hole can be formed small. For this reason, a filter having excellent filtration characteristics can be formed.

  The filter device is formed by arranging the above-described filter inside a resin holder. The holder is composed of, for example, a member that communicates with the ink tank and a member that communicates with the ink jet head, and the two members sandwich the filter so that the filter is fixed inside the holder. A filter device is formed by welding two members sandwiching the filter, for example, by ultrasonic welding.

JP 2002-210960 A

  There is a difference between the linear expansion coefficient of the filter formed of the metal film and the linear expansion coefficient of the holder formed of resin. For this reason, there exists a possibility that a wrinkle may arise in the filter fixed to the holder, for example because of expansion and contraction of the holder by the heat generated at the time of welding.

  A gap is formed between the filter and the holder due to wrinkles generated in the filter. If this gap is larger than the hole of the filter, unfiltered ink is supplied to the inkjet head through the gap. For this reason, when wrinkles occur in the filter, the filter is discarded as a defective product, and the yield deteriorates.

  The objective of this invention is providing the filter apparatus for inkjet printers which can suppress the wrinkle of a filter, its manufacturing method, and the filter for inkjet printers which can suppress generation | occurrence | production of wrinkles.

A filter device for an ink jet printer according to one embodiment includes:
A holder having a first holder member, a second holder member fixed to the first holder member, and a filter chamber surrounded by the first holder member and the second holder member And a filter that is a metal film that has a filtration part in which a plurality of holes are formed, and an outer peripheral part that is provided integrally with the filtration part and surrounds the filtration part, and that partitions the filter chamber. And the outer peripheral portion of the filter is formed to be thicker than the filtering portion, and is arranged with a gap therebetween and is sandwiched between the first holder member and the second holder member. The cross-sectional area that opens into the filter chamber in the gap between the plurality of first portions by being crushed between the first portion and the plurality of first portions is defined as the cross-sectional area of the hole of the filtration unit. A second portion that is narrower than the second portion.

1 is a perspective view schematically showing a filter device, an ink tank, and an inkjet head according to a first embodiment. Sectional drawing which shows the filter apparatus of 1st Embodiment along the F2-F2 line of FIG. The top view which shows the filter before the filter apparatus of 1st Embodiment is assembled. Sectional drawing which shows a part of manufacturing process of the filter of 1st Embodiment roughly. Sectional drawing which shows a part of manufacturing process of the filter of 1st Embodiment after the state of FIG. 4 schematically. Sectional drawing which shows schematically a part of manufacturing process of the filter of 1st Embodiment after the state of FIG. Sectional drawing which shows schematically a part of manufacturing process of the filter of 1st Embodiment after the state of FIG. Sectional drawing which shows schematically a part of manufacturing process of the filter of 1st Embodiment after the state of FIG. FIG. 9 is a cross-sectional view schematically showing a part of the manufacturing process of the filter of the first embodiment after the state of FIG. 8. Sectional drawing which shows schematically a part of manufacturing process of the filter apparatus of 1st Embodiment. Sectional drawing which shows schematically a part of manufacturing process of the filter apparatus of 1st Embodiment in the state after FIG. The top view which shows roughly a part of filter before the filter apparatus which concerns on 2nd Embodiment is assembled. Sectional drawing which shows a part of filter of 2nd Embodiment schematically along the F13-F13 line | wire of FIG. Sectional drawing which shows a part of manufacturing process of the holder apparatus of 2nd Embodiment roughly. FIG. 15 is a cross-sectional view schematically showing a part of the manufacturing process of the filter device of the second embodiment after the state of FIG. 14.

  A first embodiment will be described below with reference to FIGS. 1 to 11. FIG. 1 is a perspective view schematically showing a filter device 10 for an ink jet printer, an ink tank 11, and an ink jet head 12. As shown in FIG. The filter device 10, the ink tank 11, and the ink jet head 12 are built in the ink jet printer.

  The filter device 10 is disposed in the middle of a pipe 13 that supplies ink from the ink tank 11 to the inkjet head 12. The ink stored in the ink tank 11 is filtered by the filter device 10 and supplied to the inkjet head 12.

  For example, oil-based ink is stored in the ink tank 11. The ink is not limited to this, and other types of ink may be used.

  The inkjet head 12 is a so-called edge shooter type inkjet head. The inkjet head 12 has a plurality of pressure chambers formed by piezoelectric elements, and ejects ink supplied to these pressure chambers from the plurality of nozzles 12a, respectively.

  FIG. 2 is a sectional view showing the filter device 10 along the line F2-F2 of FIG. As shown in FIG. 2, the filter device 10 includes a holder 21 and a filter 22. The holder 21 has a first holder member 25, a second holder member 26, and a filter chamber 27. The filter chamber 27 is surrounded by the first holder member 25 and the second holder member 26.

  The first holder member 25 is provided with an inlet 31, an upstream chamber 32, a first pressure contact portion 33, and a first fixing portion 34. The inflow port 31 opens to the upstream chamber 32 and is connected to the ink tank 11 via the pipe 13. The ink stored in the ink tank 11 flows into the upstream chamber 32 from the inlet 31 through the pipe 13. The upstream chamber 32 is a part of the filter chamber 27.

  The first pressure contact portion 33 is a frame-like surface surrounding the upstream chamber 32 and has high flatness. The first pressure contact portion 33 is formed to hold the filter 22. The first fixing portion 34 is a frame-like surface that surrounds the first pressure contact portion 33.

  The second holder member 26 is provided with an outflow port 36, a downstream chamber 37, and a second press contact portion 38. The outlet 36 opens to the downstream chamber 37 and is connected to the inkjet head 12 via the pipe 13. The downstream chamber 37 is a part of the filter chamber 27 and is provided on the opposite side of the upstream chamber 32 with the filter 22 in between. In other words, the filter chamber 27 in the holder 21 is partitioned into an upstream chamber 32 and a downstream chamber 37 by the filter 22.

  The second pressure contact portion 38 is a frame-like surface surrounding the downstream chamber 37 and has high flatness. The second pressure contact portion 38 is formed to hold the filter 22, and faces the first pressure contact portion 33 with the filter 22 interposed therebetween. The second fixing portion 39 is a frame-like surface that surrounds the second press-contact portion 38 and is fixed to the first fixing portion 34 by, for example, welding.

  FIG. 3 is a plan view showing the filter 22 before the filter device 10 is assembled. The filter 22 is formed in a substantially rectangular shape by a nickel thin film which is a kind of metal film, and has a filtering part 41 and an outer peripheral part 42.

  As shown in FIG. 3, the filter portion 41 is provided with a plurality of holes 45. The diameter of the hole 45 is, for example, 5 μm. Note that the particle diameter of the ink stored in the ink tank 11 is smaller than the diameter of the hole 45, and the ink can pass through the hole 45. On the other hand, impurities to be removed that are mixed in the ink are captured by the filtration unit 41 and removed.

  The outer peripheral part 42 is provided integrally with the filtering part 41 and surrounds the filtering part 41. The outer peripheral portion 42 has a plurality of first portions 47 and a plurality of second portions 48.

  The first portion 47 is formed to be thicker than the filtering portion 41 and projects toward the first holder member 25 as shown in FIG. The thickness of the first portion 47 is, for example, 10 μm. The plurality of first portions 47 are disposed with a gap 49 therebetween.

  As shown in FIG. 2, the first portion 47 is sandwiched between the first pressure contact portion 33 of the first holder member 25 and the second pressure contact portion 38 of the second holder member 26. Thereby, the filter 22 is fixed inside the holder 21.

  As shown in FIG. 3, the plurality of gaps 49 formed between the plurality of first portions 47 are each formed in a groove shape. The plurality of gaps 49 respectively extend in the direction from the outer edge 42 a of the outer peripheral portion 42 toward the filtering portion 41.

  The plurality of second portions 48 are respectively disposed between the plurality of first portions 47. The second portion 48 before the filter device 10 is assembled forms the same plane as the filtering portion 41. The thickness of the second part 48 is 5 μm, which is the same as the thickness of the filtration part 41. That is, the second portion 48 is formed thinner than the first portion 47.

  As shown in FIG. 2, in a state where the filter device 10 is assembled, the second portion 48 is crushed in a direction in which the adjacent first portions 47 approach each other. The second portion 48 is crushed to narrow the gap 49 or divide the gap 49. Due to the crushed second portion 48, the cross-sectional area of the gap 49 that opens to the upstream chamber 32 becomes narrower than the cross-sectional area of the hole 45 of the filtration part 41.

  Below, an example of the manufacturing method of the filter apparatus 10 is demonstrated. FIG. 4 is a cross-sectional view schematically showing a part of the manufacturing process of the filter 22. The filter 22 is manufactured by electroforming. As shown in FIG. 4, first, the first resist 52 is uniformly applied to the surface 51 a of the conductive substrate 51. The thickness of the applied first resist 52 is 5 μm, which is the same as the thickness of the filtration part 41 of the manufactured filter 22 and the thickness of the second part 48 of the outer peripheral part 42.

  Next, the first resist 52 is covered with the first pattern film 53, and the pattern is baked on the first resist 52. The first pattern film 53 is provided with a plurality of first pattern holes 54 corresponding to the plurality of holes 45 of the filtration part 41, and a part of the first resist 52 is exposed. By baking the pattern, the first resist 52 at the position corresponding to the first pattern hole 54 is cured.

  FIG. 5 is a cross-sectional view schematically showing a part of the manufacturing process of the filter 22 after the state of FIG. After the first resist 52 is cured, the first resist 52 other than the cured portion is removed. The first resist 52 that has not been cured by being covered with the first pattern film 53 is dissolved and removed by a developer such as an alkaline solution. Thereby, the hardened first resists 52 remain on the surface 51 a of the substrate 51. The plurality of hardened first resists 52 are formed in columnar shapes corresponding to the first pattern holes 54.

  Next, nickel is electroformed on the surface 51a of the substrate 51 on which the first cured resist 52 remains. Nickel grows in places other than the cured first resist 52 remaining, and forms the first layer 22a of the filter 22 that is a nickel thin film.

  The first layer 22 a is an intermediate product of the filter 22, and includes the filtering part 41, a part of the first part 47 and the second part 48 of the outer peripheral part 42. The thickness of the first layer 22 a is 5 μm, which is the same as the thickness of the first resist 52.

  FIG. 6 is a cross-sectional view schematically showing a part of the manufacturing process of the filter 22 after the state shown in FIG. After the first layer 22 a of the filter 22 is formed, the second resist 61 is uniformly applied on the first layer 22 a and the remaining first resist 52. The thickness of the applied second resist 61 is 5 μm, which is the difference between the thickness of the first portion 47 and the thickness of the second portion 48 of the outer peripheral portion 42 of the produced filter 22.

  Next, the second resist 61 is covered with the second pattern film 62, and the pattern is baked on the second resist 61. A second pattern hole 63 is provided in the second pattern film 62 and a part of the second resist 61 is exposed. The second pattern hole 63 corresponds to the filtering portion 41 and the second portion 48 of the outer peripheral portion 42. By baking the pattern, the second resist 61 at a position corresponding to the second pattern hole 63 is cured.

  FIG. 7 is a cross-sectional view schematically showing a part of the manufacturing process of the filter 22 after the state of FIG. After baking the pattern, the second resist 61 other than the cured portion is removed. The second resist 61 that is not cured by being covered with the second pattern film 62 is dissolved and removed by a developer such as an alkaline solution. As a result, the cured second resist 61 remains on the first layer 22 a of the filter 22. The cured second resist 61 is formed in a shape corresponding to the second pattern hole 63.

  FIG. 8 is a cross-sectional view schematically showing a part of the manufacturing process of the filter 22 after the state of FIG. After removing the uncured second resist 61, nickel is electroformed on the first layer 22a of the filter 22 where the cured second resist 61 remains. Nickel grows in places other than where the hardened second resist 61 remains. Thereby, the 1st part 47 of the outer peripheral part 42 in which one part was produced | generated by the 1st layer 22a is formed. A part of the first part 47 generated by the first layer 22a and a part of the first part 47 generated by the subsequent plating are integrally provided.

  FIG. 9 is a cross-sectional view schematically showing a part of the manufacturing process of the filter 22 after the state of FIG. After the first portion 47 of the outer peripheral portion 42 is formed, the cured first resist 52 and second resist 61 are removed. The first and second resists 52 and 61 are dissolved and removed by a stripping solution such as an alkaline solution.

  Next, the filter 22 is removed from the substrate 51. The filter 22 is formed by the above procedure.

  FIG. 10 is a cross-sectional view schematically showing a part of the manufacturing process of the filter device 10. In FIG. 10, the filter 22 is shown as a side view. As shown in FIG. 10, the formed filter 22 is disposed between the first holder member 25 and the second holder member 26. A protrusion 66 is provided on the second fixing portion 39 of the second holder member 26 before the filter device 10 is assembled. The protruding portion 66 protrudes toward the first fixing portion 34 of the first holder member 25.

  The first pressure contact portion 33 of the first holder member 25 and the second pressure contact portion 38 of the second holder member 26 sandwich the first portion 47 of the outer peripheral portion 42 of the filter 22. When the first portion 47 is sandwiched between the first and second pressure contact portions 33 and 38, the protruding portion 66 of the second fixing portion 39 comes into contact with the first fixing portion 34.

  With the protrusion 66 in contact with the first fixing portion 34, the first fixing portion 34 and the second fixing portion 39 are welded by ultrasonic welding. The protrusion 66 melts by ultrasonic welding and fixes the first fixing part 34 to the second fixing part 39. Thereby, the 2nd holder member 26 is fixed to the 1st holder member 25, and the holder 21 is formed. Due to the heat generated by the ultrasonic welding, the holder 21 and the filter 22 are heated and each expands.

  FIG. 11 is a cross-sectional view schematically showing a part of the manufacturing process of the filter device 10 after the state of FIG. As shown by the arrows in FIG. 11, after ultrasonic welding, the holder 21 and the filter 22 are cooled and contracted. Since the resin holder 21 has a larger linear expansion coefficient than the metal filter 22, the resin holder 21 contracts more than the filter 22.

  Due to the difference in shrinkage between the holder 21 and the filter 22, the second portion 48 of the outer peripheral portion 42 of the filter 22 is compressed in a direction in which the adjacent first portions 47 approach each other. Since the second portion 48 is formed thinner than the first portion 47, it is deformed and crushed by this compression. When the second portion 48 is crushed, the gap 49 between the first portions 47 is narrowed. As a result, the cross-sectional area of the gap 49 that opens to the upstream chamber 32 is narrower than the cross-sectional area of the hole 45 of the filtration part 41. Thus, the filter device 10 is manufactured.

  According to the filter device 10 configured as described above, when the holder 21 and the filter 22 contract, the second portion 48 of the outer peripheral portion 42 of the filter 22 is crushed between the first portions 47. That is, the second portion 48 serves as a buffer band for the external force applied to the filter 22 due to the difference in coefficient of linear expansion between the holder 21 and the filter 22. As a result, the filter 22 is wrinkled due to the difference in contraction amount between the holder 21 and the filter 22, and the impurities to be removed by the filter part 41 of the filter 22 through the gap formed by the wrinkle are prevented from flowing into the downstream chamber 37. it can. Therefore, the yield of the filter device 10 can be improved.

  Further, the gap 49 between the first portions of the outer peripheral portion 42 of the filter 22 is narrowed by the crushed second portion 48. This prevents impurities that should be removed by the filtration part 41 of the filter 22 from flowing into the downstream chamber 37 through the gap 49.

  On the other hand, when the general-purpose holder 21 that can be used for a filter other than the filter 22 is used, the thickness of the usable filter is determined by the distance between the first pressure contact portion 33 and the second pressure contact portion 38. The In the filter 22, the first portion 47 of the outer peripheral portion 42 formed to be thicker than the filtering portion 41 is sandwiched between the first and second pressure contact portions 33 and 38. For this reason, the filtration part 41 can be formed thinly with respect to the thickness of the prescribed filter used for the general-purpose holder 21. Since the diameter of the hole 45 of the filtration part 41 is determined by the thickness of the filtration part 41, the hole 45 can be made small.

  Furthermore, by providing the outer peripheral part 42 formed thicker than the filtering part 41, it is possible to improve the strength of the filter 22 and facilitate welding of the first holder member 25 and the second holder member 26. it can.

  In FIGS. 2 to 11, several second portions 48 and gaps 49 are provided on each side of the filter 22, but the number of the second portions 48 and gaps 49 is not limited thereto. For example, the second portion 48 and the gap 49 may be provided uniformly over the entire circumference of the outer peripheral portion 42.

  Next, a second embodiment will be described with reference to FIGS. Note that, in the embodiment disclosed below, the same reference numerals are assigned to components having the same functions as those of the filter device 10 of the first embodiment, and the description thereof is omitted.

  FIG. 12 is a plan view schematically showing a part of the filter 22 before the filter device 10 according to the second embodiment is assembled. FIG. 13 is a cross-sectional view schematically showing a part of the filter 22 along line F13-F13 in FIG. The filter 22 has a first surface 22 b facing the first holder member 25 and a second surface 22 c facing the second holder member 26. The second surface 22c is located on the opposite side of the first surface 22b.

  The first portion 47 of the outer peripheral portion 42 of the filter 22 is arranged in a matrix and includes a first convex portion 71 and a second convex portion 72. The 1st convex part 71 and the 2nd convex part 72 are arrange | positioned adjacent to each other. Before the filter device 10 is assembled, the first protrusion 71 projects from the first surface 22 b of the filter 22. Before the filter device 10 is assembled, the second protrusion 72 protrudes from the second surface 22 c of the filter 22.

  Below, an example of the manufacturing method of the filter apparatus 10 of 2nd Embodiment is demonstrated. FIG. 14 is a cross-sectional view schematically showing a part of the manufacturing process of the filter device. In FIG. 14, the filter 22 is shown as a side view. As shown in FIG. 14, the formed filter 22 is disposed between the first holder member 25 and the second holder member 26.

  15 is a cross-sectional view schematically showing a part of the manufacturing process of the filter device 10 after the state shown in FIG. The first pressure contact portion 33 of the first holder member 25 and the second pressure contact portion 38 of the second holder member 26 sandwich the first portion 47 of the outer peripheral portion 42 of the filter 22. As shown in FIG. 15, when the first portion 47 is sandwiched between the first and second pressure contact portions 33 and 38, the second portion 48 is deformed and crushed in the thickness direction of the filter 22.

  As the second portion 48 is crushed, the first convex portion 71 and the second convex portion 72 are aligned in the thickness direction of the filter 22. In other words, the first convex portion 71 and the second convex portion 72 are arranged side by side between the first and second press contact portions 33 and 38. Thereby, the 1st and 2nd convex parts 71 and 72 are clamped by the 1st and 2nd press-contact parts 33 and 38, respectively. Further, the gap 49 between the first portions 47 is narrowed.

  Even when the flatness of the first and second press contact portions 33 and 38 is low, the second portion 48 is flexibly deformed according to the shape of the first and second press contact portions 33 and 38. For this reason, the first and second convex portions 71 and 72 are clamped regardless of the flatness of the first and second pressure contact portions 33 and 38.

  In a state where the first and second convex portions 71 and 72 are sandwiched, the first fixing portion 34 and the second fixing portion 39 are welded by ultrasonic welding. Thereby, the holder 21 is formed. By ultrasonic welding, the holder 21 and the filter 22 are heated and expanded.

  After the ultrasonic welding, the holder 21 and the filter 22 are cooled and contracted. Since the resin holder 21 has a larger linear expansion coefficient than the metal filter 22, the resin holder 21 contracts more than the filter 22.

  The second portion 48 of the outer peripheral portion 42 of the filter 22 is formed thinner than the first portion 47. For this reason, the second portion 48 is deformed by the difference in contraction amount between the holder 21 and the filter 22 and is crushed in the direction in which the adjacent first portions 47 approach each other. When the second portion 48 is crushed, the gap 49 between the first convex portion 71 and the second convex portion 72 is narrowed. As a result, the cross-sectional area of the gap 49 that opens to the upstream chamber 32 is narrower than the cross-sectional area of the hole 45 of the filtration part 41. Thus, the filter device 10 is manufactured.

  According to the filter device 10 having the above-described configuration, the first pressure contact portion 33 of the first holder member 25 and the second pressure contact portion 38 of the second holder member 26 are used to form the first outer peripheral portion 42 of the filter 22. By sandwiching the portion 47, the second portion 48 is crushed in the thickness direction of the filter 22. The first and second convex portions 71 and 72 of the first portion 47 are held regardless of the flatness of the first and second press contact portions 33 and 38. In other words, the filter 22 has pseudo elasticity and is crushed in the thickness direction. Thereby, even if the flatness of the first and second pressure contact portions 33 and 38 is low, the hole 45 of the filtration portion 41 is interposed between the filter 22 and the first and second pressure contact portions 33 and 38. It is possible to suppress the generation of a larger gap.

  In the above embodiment, the first fixing portion 34 and the second fixing portion 39 are fixed by ultrasonic welding. However, the first fixing portion 34 and the second fixing portion 39 are not limited to this, and may be fixed by other means such as an adhesive. good.

  Furthermore, in the above embodiment, the second portion 48 is crushed due to expansion and contraction due to heat generation during ultrasonic welding. However, the present invention is not limited to this, and the second portion 48 may be crushed due to vibration or other factors. .

  In addition, in the above embodiment, the filter 22 is formed by electroforming. However, the present invention is not limited to this, and the filter 22 may be formed by other means such as half etching or diffusion bonding.

Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.
Hereinafter, the invention described in the scope of claims of the present application will be appended.
[1] A first holder member, a second holder member fixed to the first holder member, and a filter chamber surrounded by the first holder member and the second holder member. A holder with
A filter that is a metal film that has a filtration part in which a plurality of holes are formed, an outer peripheral part that is provided integrally with the filtration part and surrounds the filtration part, and partitions the filter chamber;
Comprising
The outer periphery of the filter is
A plurality of first portions that are formed thicker than the filtering portion and are arranged with a gap between each other and sandwiched between the first holder member and the second holder member,
A second portion that is crushed between the plurality of first portions so that a cross-sectional area of a gap between the plurality of first portions is narrower than a cross-sectional area of the hole of the filtration unit;
A filter device for an ink jet printer, comprising:
[2] The ink jet printer according to [1], wherein the gap between the plurality of first portions is formed in a groove shape extending in a direction from the outer edge of the outer peripheral portion toward the filtration portion. Filter device.
[3] The filter has a first surface facing the first holder member, and a second surface facing the second holder member,
The first portion of the outer peripheral portion includes a first protrusion protruding from the first surface and a second protrusion protruding from the second surface while being disposed adjacent to the first protrusion. And a convex portion of
When the second portion of the outer peripheral portion is crushed, the first convex portion and the second convex portion are aligned and sandwiched between the first holder member and the second holder member, [1] The inkjet printer according to [1], wherein a cross-sectional area of a gap between the first convex portion and the second convex portion is formed to be narrower than a cross-sectional area of the hole of the filtering portion. Filter device.
[4] A first holder member, a second holder member fixed to the first holder member, and a filter chamber surrounded by the first holder member and the second holder member. A holder with
A filter that is a metal film that has a filtration part in which a plurality of holes are formed, an outer peripheral part that is provided integrally with the filtration part and surrounds the filtration part, and partitions the filter chamber;
With
The outer periphery of the filter is
A plurality of first parts formed thicker than the filtration part and arranged with a gap therebetween;
A second portion thinner than the first portion provided between the plurality of first portions;
A method of manufacturing a filter device for an ink jet printer including:
Sandwiching the first portion of the outer peripheral portion between the first holder member and the second holder member;
A filter for an ink jet printer, wherein a cross-sectional area of a gap between the first parts is made smaller than a cross-sectional area of the hole of the filtering part by crushing the second part of the outer peripheral part. Device manufacturing method.
[5] By electroforming, a first layer that is an intermediate product of the filter including the filtration part, a part of the first part of the outer peripheral part, and the second part is formed;
The method for producing a filter device for an ink jet printer according to [4], wherein the filter is formed by electroforming on the first layer.
[6] The filter has a first surface facing the first holder member, and a second surface facing the second holder member,
The first portion of the outer peripheral portion includes a first protrusion protruding from the first surface and a second protrusion protruding from the second surface while being disposed adjacent to the first protrusion. And a convex portion of
The second portion is crushed by sandwiching the first portion between the first holder member and the second holder member, and the first convex portion and the second convex portion are aligned. [4] A method for manufacturing a filter device for an ink jet printer according to [4].
[7] A filtration part which is a metal film in which a plurality of holes are formed;
An outer peripheral part formed integrally with the filtration part and surrounding the filtration part;
Comprising
The outer periphery is
A plurality of first parts formed thicker than the filtration part and arranged with a gap therebetween;
A second part that is formed thinner than the first part and collapses when compressed in a direction in which adjacent first parts approach each other;
A filter for an ink jet printer, comprising:
[8] The inkjet printer according to [7], wherein the gap between the plurality of first portions is formed in a groove shape extending in a direction from the outer edge of the outer peripheral portion toward the filtration portion. Filter for.
[9] The filter has a first surface and a second surface located on the opposite side of the first surface,
The first portion of the outer peripheral portion includes a first protrusion protruding from the first surface and a second protrusion protruding from the second surface while being disposed adjacent to the first protrusion. And a convex portion of
When the second portion of the outer peripheral portion is crushed in the thickness direction of the filter, the first convex portion and the second convex portion are aligned, and the first convex portion and the second convex portion are The filter for an ink jet printer according to [7], wherein a cross-sectional area of a gap between the filters is narrower than a cross-sectional area of the hole of the filtration portion.

  DESCRIPTION OF SYMBOLS 10 ... Filter apparatus, 21 ... Holder, 22 ... Filter, 22b ... 1st surface, 22c ... 2nd surface, 25 ... 1st holder member, 26 ... 2nd holder member, 27 ... Filter chamber, 41 ... Filter part 42 ... outer peripheral part 42a ... outer edge 45 ... hole 47 ... first part 48 ... second part 49 ... gap, 71 ... first convex part, 72 ... second convex part.

Claims (9)

A holder having a first holder member, a second holder member fixed to the first holder member, and a filter chamber surrounded by the first holder member and the second holder member When,
A filter that is a metal film that has a filtration part in which a plurality of holes are formed, an outer peripheral part that is provided integrally with the filtration part and surrounds the filtration part, and partitions the filter chamber;
Comprising
The outer periphery of the filter is
A plurality of first portions that are formed thicker than the filtering portion and are arranged with a gap between each other and sandwiched between the first holder member and the second holder member,
By collapsing between said plurality of first portions, the cross-sectional area opening into the filter chamber of the gap between the plurality of first portions, the narrower than the cross-sectional area of the holes of the filtration unit 2 part,
A filter device for an ink jet printer, comprising:   2. The ink jet printer filter according to claim 1, wherein the gap between the plurality of first portions is formed in a groove shape extending in a direction from the outer edge of the outer peripheral portion toward the filtration portion. apparatus. The filter has a first surface facing the first holder member and a second surface facing the second holder member;
The first portion of the outer peripheral portion includes a first protrusion protruding from the first surface and a second protrusion protruding from the second surface while being disposed adjacent to the first protrusion. And a convex portion of
When the second portion of the outer peripheral portion is crushed, the first convex portion and the second convex portion are aligned and sandwiched between the first holder member and the second holder member, claim the cross-sectional area which is open to the filter chamber of the gap between the first protrusion and the second protrusion, characterized in that formed narrower than the cross-sectional area of the holes of the filtration unit 2. A filter device for an ink jet printer according to 1. A holder having a first holder member, a second holder member fixed to the first holder member, and a filter chamber surrounded by the first holder member and the second holder member When,
A filter that is a metal film that has a filtration part in which a plurality of holes are formed, an outer peripheral part that is provided integrally with the filtration part and surrounds the filtration part, and partitions the filter chamber;
With
The outer periphery of the filter is
A plurality of first parts formed thicker than the filtration part and arranged with a gap therebetween;
A second portion thinner than the first portion provided between the plurality of first portions;
A method of manufacturing a filter device for an ink jet printer including:
Sandwiching the first portion of the outer peripheral portion between the first holder member and the second holder member;
By crushing the second portion of the outer peripheral portion, characterized in that the cross-sectional area opening into the filter chamber of the gap between the first portion and narrower than the cross-sectional area of the holes of the filtration unit A method for manufacturing a filter device for an inkjet printer. By electroforming, a first layer which is an intermediate product of the filter including the filtering part, a part of the first part of the outer peripheral part, and the second part is formed,
The method for manufacturing a filter device for an ink jet printer according to claim 4, wherein the filter is formed by electroforming on the first layer. The filter has a first surface facing the first holder member and a second surface facing the second holder member;
The first portion of the outer peripheral portion includes a first protrusion protruding from the first surface and a second protrusion protruding from the second surface while being disposed adjacent to the first protrusion. And a convex portion of
The second portion is crushed by sandwiching the first portion between the first holder member and the second holder member, and the first convex portion and the second convex portion are aligned. The manufacturing method of the filter apparatus for inkjet printers of Claim 4 characterized by these. A filtration part which is a metal film in which a plurality of holes are formed;
An outer peripheral part formed integrally with the filtration part and surrounding the filtration part;
Comprising
The outer periphery is
A plurality of first parts formed thicker than the filtration part and arranged with a gap therebetween;
A second part that is formed thinner than the first part and collapses when compressed in a direction in which adjacent first parts approach each other;
A filter for an ink jet printer, comprising:   8. The filter for an ink jet printer according to claim 7, wherein the gap between the plurality of first portions is formed in a groove shape extending in a direction from the outer edge of the outer peripheral portion toward the filtration portion. . The filter has a first surface and a second surface located on the opposite side of the first surface;
The first portion of the outer peripheral portion includes a first protrusion protruding from the first surface and a second protrusion protruding from the second surface while being disposed adjacent to the first protrusion. And a convex portion of
When the second portion of the outer peripheral portion is crushed in the thickness direction of the filter, the first convex portion and the second convex portion are aligned, and the first convex portion and the second convex portion are The filter for an ink jet printer according to claim 7 , wherein a cross-sectional area that opens into the filter chamber in a gap between the two is narrower than a cross-sectional area of the hole of the filtering portion.

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