JPS6256120A - Preparation of sheet having fine hole - Google Patents

Abstract

PURPOSE:To make a desired number of fine holes on an insulating substance with a good accuracy by a method wherein column type top force and bottom force, having cavities, opening on one surface, and indented with multithread screw on the outer periphery of at least one of the forces, are employed. CONSTITUTION:A cavity 11 is opened on one face of a matrix 10, a multithread screw is indented on the outer peripheral surface of the column type matrix 10 and wires (Cu) 12 are wound in the grooves of the multithread screw so as to bridge over the opening of the cavity 11. The matrix 10, wound by the wires, is used as an top force and the matrix 10' of the same type is used as a bottom force while both matrixes are mated and epoxy resin or the like is poured into the cavities 11, 11' to cure it. Subsequently, the top force 10 is split from the bottom force 10' and the poured resin is taken out of the matrix. A molded resin mold 13 is machined into a direction orthogonal to the wires 12 to produce a thin sheet body 13' having a desired size while the wires are molten out of the thin sheet body 13' by employing corrosive liquid thereby forming very fine holes 14.

Description

【発明の詳細な説明】 技術分だ 本発明は、微細孔板作成方法、より詳細には、記録装置
の書込みヘッドに用いて好適な多針電極ヘッド用の微細
孔板を作成する方法に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method of making a microaperture plate, and more particularly to a method of making a microaperture plate for a multineedle electrode head suitable for use in a write head of a recording device.

凹− ファクシミリ装置等においては、書込みヘッドに多針電
極ヘッドを用いているが、この多針電極を取り付けるた
めに微細孔を有する薄板を使用する。In concave facsimile machines and the like, a multi-needle electrode head is used as a write head, and a thin plate having fine holes is used to attach the multi-needle electrode.

第８図は、上述のごとき微細孔板を作成する従来技術に
一例を説明するための図で、図中、１は微細ポンチ、２
はダイス、３は微細孔が形成されるポリイミドフィルム
、４及び５は該ポリイミドフィルムを挟持する銅板で、
該ポリイミドフィルム３を図示のように銅板４及び５に
て」ニドから挟持してダイス２の上に載せ、次いで、微
細ポンチ、１を押下して微細孔６をあけるものであるが
、孔６をあけた後に、図示のように、ポリイミドフィル
ム３に張っである銅が孔の中にたれ込み、孔の周囲にパ
リができたり、フィルムが変形したりする欠点があった
。FIG. 8 is a diagram for explaining an example of the prior art for producing the above-mentioned micro-perforated plate, in which 1 is a micro-puncher, 2
is a die, 3 is a polyimide film in which micropores are formed, 4 and 5 are copper plates sandwiching the polyimide film,
As shown in the figure, the polyimide film 3 is sandwiched between copper plates 4 and 5 and placed on the die 2, and then the fine punch 1 is pressed down to make a fine hole 6. After opening the hole, as shown in the figure, the copper covering the polyimide film 3 sag into the hole, resulting in formation of cracks around the hole and deformation of the film.

目　　　　　的 本発明は、」二連のごとき実情に鑑みでなされたもので
、特に、絶縁性物質に所望数の微細孔を精度よく作成す
ることを目的としてなされたものである。Purpose The present invention was made in view of the actual situation such as "double series", and in particular, the present invention was made for the purpose of accurately creating a desired number of micropores in an insulating material.

講−一」又 本発明は、上記目的を達成するために、−面に開口する
キャビティを有し、少なくとも一方の外周に多条ネジが
刻設された柱状体の上型及び下型を使用し、前記上型及
び下型の少なくとも一方の多条ネジに針線を前記キャビ
ティの上部を橋架するように巻回し、次いで、前記上型
と下型とを前記キャビティを対向して接合して前記キャ
ビティに樹脂を注型した後硬化させ、次いで、前記上型
と下型を分離して前記硬化樹脂を取り出して所望寸法の
薄板に加工し、その後、腐食液を用いて前記針線のみを
除去し、該針線の腐食によって生じた微細孔を有する薄
板を作成することを特徴としたものである。以下、本発
明の一実施例に基づいて説明する。In order to achieve the above object, the present invention uses an upper mold and a lower mold of a columnar body having a cavity opening on the − surface and having a multi-thread screw carved on the outer periphery of at least one side. Then, a needle wire is wound around a multi-thread screw of at least one of the upper mold and the lower mold so as to bridge the upper part of the cavity, and then the upper mold and the lower mold are joined with the cavities facing each other. After resin is poured into the cavity and cured, the upper mold and lower mold are separated, the cured resin is taken out and processed into a thin plate of desired dimensions, and then only the needle wire is removed using a corrosive liquid. This method is characterized by producing a thin plate having micropores caused by corrosion of the needle wire. Hereinafter, an explanation will be given based on one embodiment of the present invention.

第１図は、本発明の実施に使用する鋳型の一例を示す斜
視図で、図中、１ｏは柱状の鋳型、１１はキャビティで
、該キャビティ】１は鋳型１ｏの一面に開口している。FIG. 1 is a perspective view showing an example of a mold used in carrying out the present invention. In the figure, 1o is a columnar mold, 11 is a cavity, and the cavity 1 is open on one side of the mold 1o.

また、該柱状鋳型１０の外周面には多条ネジが刻設され
、該多条ネジの溝内に線材（Ｃｕ）１２が前記キャビテ
ィ１１の開口部を橋架するように巻回される。なお、こ
の時のネジピッチは０．０６２５〜０．２５＋ｍ位であ
る。Further, a multi-thread thread is carved on the outer peripheral surface of the columnar mold 10, and a wire (Cu) 12 is wound within the groove of the multi-thread thread so as to bridge the opening of the cavity 11. Note that the screw pitch at this time is approximately 0.0625 to 0.25+m.

第２図は、上述のごとくして線材が巻回された鋳型１０
を上型とし、上記と同様の鋳型１０’を下型として両鋳
型１０．１０’を重ね合わせた時の状態を示す斜視図、
第３図は、第２図のＡ−Ａ線断面図、第４図は、第３図
のＢ−Ｂ線断面図で。FIG. 2 shows a mold 10 in which the wire rod is wound as described above.
A perspective view showing a state when both molds 10 and 10' are overlapped with the upper mold and the same mold 10' as the lower mold,
3 is a sectional view taken along the line A-A in FIG. 2, and FIG. 4 is a sectional view taken along the line BB in FIG. 3.

図示例の場合、下型１０’には線材が巻回されていない
が、線材が巻回されているものを使用することも可能で
あり、その場合には、後述するような微細孔の列が２列
でき上る。上述のようにして」二型１０？下型１０′と
を重ね合わせ、キャビティ１−１．．１１’の中にエポ
キシ樹脂等を注型して硬化させ、次いで、上記上型１０
と下型］、０′とを分割して注型された樹脂を鋳型から
取り出す。In the illustrated example, the lower die 10' is not wound with a wire rod, but it is also possible to use one with a wire rod wound around it. will form two rows. As described above, ``Type 2 10?'' The lower mold 10' is overlapped to form the cavity 1-1. ．． Epoxy resin or the like is poured into the mold 11' and cured, and then the upper mold 10 is
and the lower mold] and 0' are separated and the cast resin is taken out from the mold.

第５図は、と述のごとくして取り出された成型品で、該
成型品１３は、図示のように、上述のごとくして注型さ
れた樹脂１３の真中に線材１２が通っている形状となる
。FIG. 5 shows the molded product 13 taken out as described above, and as shown in the figure, the molded product 13 has a shape in which the wire 12 runs through the middle of the resin 13 cast as described above. becomes.

第６図は、上述のごとくして形成された樹脂成型品１３
を線材１２と直角の方向に切削して所望寸法にし１図示
のように、薄板状体１３′にしたもので、この時、薄板
状体１３′の樹脂の中に線材１２が埋っている。FIG. 6 shows a resin molded product 13 formed as described above.
is cut in a direction perpendicular to the wire rod 12 to a desired size to form a thin plate-like body 13' as shown in the figure. At this time, the wire rod 12 is embedded in the resin of the thin plate-like body 13'.

第７図は、第６図に示した薄板状体１３′から前記線材
（Ｃｕ）を腐食液（Ｆ　ｅ−Ｃ１３）を用いて溶かし出
し、微細孔１４を形成した状態を示す。FIG. 7 shows a state in which the wire rod (Cu) is dissolved out of the thin plate-like body 13' shown in FIG. 6 using a corrosive liquid (Fe-C13) to form micropores 14.

効　　　果 以上の説明から明らかなように、本発明によると、機械
加工による孔明けに比して、より位置精度を及び孔径精
度の高い微細孔板を得ることができる。また、エポキシ
樹脂のような薄板への穴あけ機械加工は脆性材料の為非
常にむずかしいが。Effects As is clear from the above description, according to the present invention, it is possible to obtain a microperforated plate with higher positional accuracy and hole diameter accuracy than when holes are formed by machining. Additionally, drilling holes in thin plates such as epoxy resin is extremely difficult due to the brittle material.

本発明によると、このような脆性材料の薄板への微細孔
加工が容易であり、精度の良い孔が長尺ものでも可能で
ある。According to the present invention, it is easy to form fine holes in a thin plate of such a brittle material, and even long holes can be formed with high precision.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の実施に使用する鋳型の一例を示す斜
視図、第２図は、上下鋳型を重ね合わせた時の斜視図、
第３図は、第２図のＡ−Ａ線断面図、第４図は、第３図
のＢ−Ｂ線断面図、第５図は、成型品を取り出した時の
斜視図、第６図は、成型品を薄板状の切削した時の斜視
図、第７図は、本発明によって作成された微細孔板の斜
視図、第８図は、従来の微細孔板作成方法の一例を説明
するための図である。 １０．１０’・・・鋳型、１１・・・キャビティ、１２
・・・線材、１３・・・成型品、１４・・・微細孔。 特許出願人　　株式会社　リコー 第　１　図 第２図 第３図　　　　第４図 １５　　図 第　　７　図FIG. 1 is a perspective view showing an example of a mold used in carrying out the present invention, FIG. 2 is a perspective view when upper and lower molds are superimposed,
Figure 3 is a sectional view taken along the line A-A in Figure 2, Figure 4 is a sectional view taken along the line B-B in Figure 3, Figure 5 is a perspective view of the molded product taken out, and Figure 6 7 is a perspective view of a molded product cut into a thin plate, FIG. 7 is a perspective view of a microporous plate produced according to the present invention, and FIG. 8 illustrates an example of a conventional method for producing a microporous plate. This is a diagram for 10.10'... Mold, 11... Cavity, 12
... wire rod, 13 ... molded product, 14 ... micropore. Patent applicant Ricoh Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 15 Figure 7

Claims (1)

【特許請求の範囲】[Claims] 一面に開口するキャビティを有し、少なくとも一方の外
周に多条ネジが刻設された柱状体の上型及び下型を使用
し、前記上型及び下型の少なくとも一方の多条ネジに針
線を前記キャビティの上部を橋架するように巻回し、次
いで、前記上型と下型とを前記キャビティを対向して接
合して前記キャビティに樹脂を注型した後硬化させ、次
いで、前記上型と下型を分離して前記硬化樹脂を取り出
して所望寸法の薄板に加工し、その後、腐食液を用いて
前記針線のみを除去し、該針線の腐食によつて生じた微
細孔を有する薄板を作成することを特徴とする微細孔板
作成方法。An upper mold and a lower mold of a columnar body having a cavity opening on one side and a multi-thread screw engraved on the outer periphery of at least one are used, and a needle line is inserted into the multi-thread screw of at least one of the upper mold and the lower mold. The upper part of the cavity is wound so as to bridge the upper part of the cavity, and then the upper mold and the lower mold are joined with the cavities facing each other, and resin is cast into the cavity and cured. The mold is separated and the cured resin is taken out and processed into a thin plate of desired dimensions, and then only the needle wire is removed using a corrosive solution to create a thin plate with micropores created by the corrosion of the needle wire. A method for producing a microporous plate characterized by the following.