JPS61291148A - Antistatic treatment of ink jet head - Google Patents

Antistatic treatment of ink jet head

Info

Publication number
JPS61291148A
JPS61291148A JP13471985A JP13471985A JPS61291148A JP S61291148 A JPS61291148 A JP S61291148A JP 13471985 A JP13471985 A JP 13471985A JP 13471985 A JP13471985 A JP 13471985A JP S61291148 A JPS61291148 A JP S61291148A
Authority
JP
Japan
Prior art keywords
water repellent
resin
coupling agent
water
antistatic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13471985A
Other languages
Japanese (ja)
Other versions
JPH0643132B2 (en
Inventor
Yasuo Katano
泰男 片野
Kyuhachiro Iwasaki
岩崎 久八郎
Takuo Isayama
伊佐山 拓郎
Minoru Ameyama
飴山 実
Hiroshi Yamazaki
博史 山崎
Shuzo Matsumoto
松本 修三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP13471985A priority Critical patent/JPH0643132B2/en
Publication of JPS61291148A publication Critical patent/JPS61291148A/en
Publication of JPH0643132B2 publication Critical patent/JPH0643132B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/165Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

PURPOSE:To prevent the adhesion of dust to the nozzle side surface of an ink jet head and to reduce the effect to an ink droplet injecting direction by performing the antistatic treatment of ink jet head without damaging water repellency, by adding a conductive filler to the water repellent member or resin substrate of the ink jet recording head made of a resin of which the nozzle side surface received water repellent treatment. CONSTITUTION:A substrate 10 is made of an ABS resin and a water repellent member 11 is formed of a fluorocarbon type water repellent material to which 20X40wt% of a fine metal power has been added in a dispersed state. The resin substrate is coated with a silane coupling agent 14 as the pretreatment of water repellent treatment. The functional group of the silane coupling agent is directed to the resin substrate side and strongly bonded to the substrate while the other side of the coupling agent 14 shows strong bonding strength to an inorg. substance, that is, a metal filler. When a metal filler is mixed, the surface resistance value of the side thereof is lowered to bring about strong antistatic effect. Earth is taken from said metal filler part. Because the metal filler is concentrated to the interior of the water repellent member by the action of gravity, fluorine groups are arranged to the uppermost surface thereof and water repellency is not damaged.

Description

【発明の詳細な説明】 技術分野一 本発W(は、インクジェット記録装置のインクジェット
ヘッドに係り、特に、ヘッドへのゴミ等の付着防+!二
、インク滴噴射方向への影響を低減する為のヘッドの帯
電防止処理に関する。
Detailed Description of the Invention Technical field 1. W (W) relates to the inkjet head of an inkjet recording device, and in particular, to prevent dust from adhering to the head +! 2. To reduce the influence on the direction of ink droplet ejection This invention relates to antistatic treatment for heads.

従来技術 一般に、インクジエソ1へ記録装置のインクジェットヘ
ッドにおいては、インク論が付着し、目詰まりを起こさ
ない様に撥水処理を施し、更に、ゴミ等の付着防止の為
に帯電防止処理を施している。
Prior Art In general, inkjet heads of recording devices are treated with water repellent treatment to prevent ink from adhering to them and causing clogging, and are also treated with antistatic treatment to prevent dust from adhering to them. There is.

第3図は撥水処理を施した従来のインクジ、11 ’7
トヘソドの正面図、第4図はその拡大断面図で、図中、
■は樹脂ヘッド、2は撥水部材、3はノズル孔で、図示
のように、ノズル孔3の表面には撥水H1(材2が設け
られている。ところで、ヘッド部材である樹脂は、表面
抵抗値が1015〜101SΩと非常に大きく、帯電し
易く、放電しにくい。また、撥水部材であるフッ素)1
脂も同様に帯電し易い。そのため、ノズル側表面ば、帯
電のためゴミが付着し易く、ノズル孔をふさく可能性が
ある。
Figure 3 shows a conventional inkjet with water-repellent treatment, 11'7
The front view of Tohesodo, Figure 4 is an enlarged sectional view, and in the figure,
2 is a resin head, 2 is a water-repellent member, and 3 is a nozzle hole.As shown in the figure, a water-repellent H1 (material 2) is provided on the surface of the nozzle hole 3.By the way, the resin that is the head member is The surface resistance value is very large at 1015 to 101SΩ, and it is easy to charge and difficult to discharge.In addition, fluorine, which is a water-repellent material,
Fat is also easily charged. Therefore, dust is likely to adhere to the nozzle side surface due to the electrical charge, and there is a possibility that the nozzle hole may be blocked.

また、インクは極性溶液であるため、第5図に示す様に
、ノズル孔表面の帯電電荷量5が空間的に均一でない場
合、インク滴4が、電荷の大きい方向へ引っ張られ、噴
射方向が乱れる可能性がある。
Furthermore, since ink is a polar solution, if the amount of electrical charge 5 on the surface of the nozzle hole is not uniform spatially, as shown in FIG. There is a possibility of disturbance.

このため、ノズル側表面に帯電防止処理を施す必要が生
じる。ところで、一般に、帯電防止処理を施すと、固体
の表面抵抗値が下がり、放電が促進されるが、そのため
に界面活性剤を使用した場合、固体表面が親水性となっ
てしまい、撥水性を必要とするインクジェットへソドノ
ズル表面としては好ましくない。また表面に金属を付着
させた場合、固体表面はその金属物性を有することとな
る。そのため、第6図に示す様に、樹脂ヘッド1に設け
た撥水部材2の一ヒから帯電防1L剤6を付着させた場
合、撥水効果を損なう可能性がある。逆に、第7図に示
すように、樹脂ヘラ1川の表面に州電防止処理を行い、
その上に撥水処理を行った場合、撥水部材2の表面抵抗
値は高いままなので、帯電防止効果が半減してしまう。
Therefore, it is necessary to perform antistatic treatment on the nozzle side surface. By the way, antistatic treatment generally lowers the surface resistance of a solid and promotes electrical discharge, but if a surfactant is used for this purpose, the solid surface becomes hydrophilic and water repellency is required. It is not suitable for use as a nozzle surface for inkjet printing. Further, when a metal is attached to the surface, the solid surface has the physical properties of the metal. Therefore, as shown in FIG. 6, when the antistatic 1L agent 6 is attached from one side of the water repellent member 2 provided on the resin head 1, the water repellent effect may be impaired. On the other hand, as shown in Figure 7, the surface of the resin spatula 1 river is treated with anti-static treatment,
If a water repellent treatment is applied thereto, the surface resistance value of the water repellent member 2 remains high, and the antistatic effect is halved.

この例として、写真フィルム上に両性界面活性剤(スル
ホン酸系)を塗布し、保護層としてセルロース誘導体系
の疎水膜を形成する、Lうにした帯電防止写真ヘ−スが
提案されている(特開昭60−17741号公報)が、
セルロースは、耐インク性の優れた疎水膜とは言えず、
耐インク性のよいフッ素樹脂を使用した場合、帯電防止
効果が半減してしまい、また定着性も良くない。
As an example of this, an antistatic photographic paste has been proposed in which an amphoteric surfactant (sulfonic acid type) is coated on a photographic film to form a cellulose derivative-based hydrophobic film as a protective layer. Publication No. 17741/1983) is
Cellulose cannot be said to be a hydrophobic film with excellent ink resistance;
When a fluororesin with good ink resistance is used, the antistatic effect is halved and the fixing properties are also poor.

月的 本発明は、上述のごとき実情に鑑みてなされたもので、
411脂性インクジエツトヘツドのノズル側表面の撥水
性を10なうことなくヘッドの帯電防止処理を行い、ノ
ズルfil+表面へのゴミ等の付着を防止し、インク滴
噴射方向への影響を低減できるようにしたインクジェノ
°1−ヘッド提供することを目的とするものである。
The present invention was made in view of the above-mentioned circumstances.
411 Antistatic treatment is performed on the nozzle side surface of the oil-based ink jet head without reducing its water repellency to 10%, preventing dust from adhering to the nozzle fill surface and reducing the effect on the ink droplet ejection direction. The object of the present invention is to provide an inkjet inkjet 1-head.

構成 本発明は、前記目的を達成するために、ノズル側表面を
撥水処理した樹脂性インクジェットヘッドの撥水部材又
は樹脂基板に導電性フィラーを添加したことを特徴とし
たものである。以下、本発明の実施例に基づいて説明す
る。
Structure In order to achieve the above object, the present invention is characterized in that a conductive filler is added to a water-repellent member or a resin substrate of a resin inkjet head whose nozzle side surface is treated to be water-repellent. Hereinafter, the present invention will be explained based on examples.

先づ、前述の第7図の様に、樹脂表面に帯電防止処理を
行い、その−Lに撥水処理を行った場合でも、帯電防止
層のアースを十分にとり、撥水部材の厚さを十分薄くす
れば、電荷が撥水部材の厚さ方向に移動して放電され、
最表面層が帯電防止層である場合には劣るにしても、か
なりの帯電防止効果が期待される。その際、単に帯電防
止剤を塗布しただけでは撥水部材及び樹脂基板と帯電防
止剤とは結合が弱(、密着性が問題となる。そこで、本
発明においてば、帯電防1F剤として効果のある導電性
フィラーを撥水部材又は樹脂基板に添加し、帯電防止剤
と撥水部材又は樹脂基板との結合力を強め、更にこの撥
水部材と樹脂基板との間にカップリング剤を塗布し、両
者の密着性を高めると共に、導電性フィラーをアースす
るようにしたものである。
First, as shown in Figure 7 above, even if the resin surface is subjected to antistatic treatment and water repellent treatment is applied to -L, the antistatic layer is sufficiently grounded and the thickness of the water repellent material is reduced. If it is made thin enough, the charge will move in the thickness direction of the water-repellent material and will be discharged.
When the outermost layer is an antistatic layer, a considerable antistatic effect is expected, even if it is inferior. At that time, if the antistatic agent is simply applied, the bond between the water repellent member and the resin substrate and the antistatic agent is weak (adhesion becomes a problem. Therefore, in the present invention, the antistatic agent is effective as a 1F antistatic agent. A certain conductive filler is added to the water-repellent member or resin substrate to strengthen the bond between the antistatic agent and the water-repellent member or resin substrate, and a coupling agent is further applied between the water-repellent member and the resin substrate. In addition to increasing the adhesion between the two, the conductive filler is grounded.

第1図は、本発明による一実施例を示し、樹脂基板10
はABS樹脂!l11Jであり、撥水部材11はフッ素
系撥水剤とし、この中に金属微粉末例えばA1やNiを
20〜40wt%加え分散さセる。この金属フィラー1
2は、撥水剤ツー1−後、重力の作用により基板側に集
中する。その際、金属フィラーは無機物であるため、こ
のままでは基板と撥水部材との密着型が悪い。そこで、
撥水処理の前処理としてシランカップリング剤のような
カンプリング剤14を樹脂基板にコートする。この時、
シランカップリング剤の官能基は樹脂基板側を向き、基
板と強い結合をする。一方、カンプリング剤14のもう
一方の側は無機物即ち金属フィラーと強い結合を示す。
FIG. 1 shows an embodiment according to the present invention, in which a resin substrate 10
is ABS resin! 111J, the water repellent member 11 is made of a fluorine-based water repellent, and 20 to 40 wt % of fine metal powder, such as A1 or Ni, is added and dispersed therein. This metal filler 1
After applying the water repellent agent 2, water repellent 2 concentrates on the substrate side due to the action of gravity. At this time, since the metal filler is an inorganic substance, the adhesiveness between the substrate and the water repellent member is poor if left as is. Therefore,
As a pretreatment for water repellent treatment, a camping agent 14 such as a silane coupling agent is coated on the resin substrate. At this time,
The functional group of the silane coupling agent faces the resin substrate side and forms a strong bond with the substrate. On the other hand, the other side of the camping agent 14 exhibits a strong bond with the inorganic substance, ie, the metal filler.

これにより金属フィラーを混入した撥水部材は樹脂基板
と強い密着性を呈する。
As a result, the water-repellent member containing the metal filler exhibits strong adhesion to the resin substrate.

金属フィラーを混入すると、その側の表面抵抗値は10
16から10−’Ωへと低下し、強い帯電防止効果をも
たらす。この金属フィラ一部分からはアースをとるよう
にする。そして金属フィラーは重力の作用で撥水部材内
部へ集中するので、最表面はフッ素基が並び、撥水性を
損なうことはない。
When a metal filler is mixed, the surface resistance value on that side is 10
16 to 10-'Ω, resulting in a strong antistatic effect. A portion of this metal filler should be grounded. Since the metal filler concentrates inside the water-repellent member under the action of gravity, the outermost surface is lined with fluorine groups and does not impair water repellency.

第2図は、本発明による他の実施例を示L7.20は樹
脂2L扱であり、樹脂21に金属フィラー22を混入し
、金属フィラ一部分からアースをとる。
FIG. 2 shows another embodiment according to the present invention. L7.20 is treated as 2L of resin, in which a metal filler 22 is mixed into the resin 21, and a portion of the metal filler is grounded.

その際、樹脂基板表面は金属フィラーが並び、やはりこ
のままでは撥水部材との密着性が良くない。
At this time, the surface of the resin substrate is lined with metal fillers, and if left as is, adhesion to the water-repellent member is not good.

そこで第1図の場合と同様にシランカップリング剤をI
D水剤コー!・の前処理としてコ−1・する。この時カ
ップリング剤23の官能基は基板表面に並び撥水部材2
4と強い結合を示す。この様な構成とすることにより、
第1図の場合と同様に、撥水性帯電防11〕の効果が得
られる。
Therefore, as in the case of Figure 1, the silane coupling agent was
D water medicine!・Do Co-1・ as a preprocessing. At this time, the functional groups of the coupling agent 23 are aligned on the substrate surface and the water repellent member 2
4 indicates a strong bond. By having such a configuration,
As in the case of FIG. 1, the effect of the water-repellent static protection 11 can be obtained.

なお、前記実施例において導電性フィラーとして金属フ
ィラーを用いたが、カーボン微粒子、繊維状金属フィラ
ー、金属を蒸着した高分子フィラー、金属微粒子等を用
いても良い。また、カップリング剤もチタンカップリン
グ剤でも同様の効果が得られる。
Although a metal filler was used as the conductive filler in the above embodiments, fine carbon particles, fibrous metal fillers, polymer fillers on which metal is vapor-deposited, fine metal particles, etc. may also be used. Further, similar effects can be obtained by using a coupling agent or a titanium coupling agent.

効果− 以−1−の説明から明らかなように、本発明に。Lれば
、ノズル孔面に撥水処理を施した樹脂製−、ラドの撥水
部+A又は461脂基板に導電性フィラーを添加するよ
うにしたので、撥水性を10なうことなく帯電防Iトを
行うことができると共に、撥水部材と樹脂基板間にカッ
プリング剤を塗布するようにしたのでta水皿部材密着
性を良くすることができる。
Effects - As is clear from the explanation below -1-, the present invention has advantages. If L is made of resin with water-repellent treatment applied to the nozzle hole surface, a conductive filler is added to the RAD water-repellent part +A or 461 resin substrate, so it is antistatic without reducing the water repellency by 10%. In addition, since the coupling agent is applied between the water repellent member and the resin substrate, the adhesion of the water tray member can be improved.

更に、撥水処理、帯電処理方法が簡単なのでヘソISの
生産性を向上させることができる。
Furthermore, since the water repellent treatment and charging treatment methods are simple, the productivity of the belly button IS can be improved.

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

第1図は、本発明によるヘッド帯電防止処理の一実施例
を示す図、第2図は、本発明によるヘッド帯電防止処理
の他の実施例を示す図、第3図は、従来のヘッドの正面
図、第4図は、従来のヘソ1′のノズル部断面拡大図、
第5図は、帯電によるインク滴噴射方向の変化を示す図
、第6図、第7図は従来の帯電防1ト処理を示す図であ
る。 10.20・・・)81脂基扱、11.24・・・撥水
部材。 14.23・・・カップリング剤、12.22・・・導
電性フィラー、13・・・撥水性表面、21・・・樹脂
。 第  1  図 第3図   第4図 第5図   第6図
FIG. 1 is a diagram showing one embodiment of the head antistatic process according to the present invention, FIG. 2 is a diagram showing another embodiment of the head antistatic process according to the present invention, and FIG. 3 is a diagram showing a conventional head antistatic process. The front view and FIG. 4 are enlarged cross-sectional views of the nozzle part of the conventional navel 1'.
FIG. 5 is a diagram showing a change in the ejection direction of ink droplets due to charging, and FIGS. 6 and 7 are diagrams showing conventional antistatic treatment. 10.20...) 81 Resin-based treatment, 11.24... Water repellent material. 14.23... Coupling agent, 12.22... Conductive filler, 13... Water repellent surface, 21... Resin. Figure 1 Figure 3 Figure 4 Figure 5 Figure 6

Claims (4)

【特許請求の範囲】[Claims] (1)、ノズル側表面を撥水処理した樹脂性インクジェ
ットヘッドの撥水部材又は樹脂基板に導電性フィラーを
添加したことを特徴とするインクジェットヘッドの帯電
防止処理方法。
(1) A method for antistatic treatment of an inkjet head, characterized in that a conductive filler is added to a water repellent member or a resin substrate of a resin inkjet head whose nozzle side surface has been treated to be water repellent.
(2)、前記撥水部材と樹脂基板間にカップリング剤を
塗布したことを特徴とする特許請求の範囲第(1)項記
載のインクジェットヘッドの帯電防止処理方法。
(2) The method for antistatic treatment of an inkjet head according to claim (1), characterized in that a coupling agent is applied between the water repellent member and the resin substrate.
(3)、前記導電性フィラーとしてカーボン微粒子、繊
維状金属フィラー、金属を蒸着した高分子フィラー又は
金属微粒子を用いたことを特徴とする特許請求の範囲第
(1)項記載のインクジェットヘッドの帯電防止処理方
法。
(3) Charging of the inkjet head according to claim (1), characterized in that the conductive filler is carbon fine particles, fibrous metal filler, metal-deposited polymer filler, or metal fine particles. Prevention treatment method.
(4)、前記カップリング剤として、シランカップリン
グ剤を用いたことを特徴とする特許請求の範囲第(1)
項記載のインクジェットヘッドの帯電防止処理方法。
(4) Claim No. (1) characterized in that a silane coupling agent is used as the coupling agent.
The antistatic treatment method for an inkjet head described in .
JP13471985A 1985-06-19 1985-06-19 Inkjet head antistatic treatment method Expired - Fee Related JPH0643132B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13471985A JPH0643132B2 (en) 1985-06-19 1985-06-19 Inkjet head antistatic treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13471985A JPH0643132B2 (en) 1985-06-19 1985-06-19 Inkjet head antistatic treatment method

Publications (2)

Publication Number Publication Date
JPS61291148A true JPS61291148A (en) 1986-12-20
JPH0643132B2 JPH0643132B2 (en) 1994-06-08

Family

ID=15134997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13471985A Expired - Fee Related JPH0643132B2 (en) 1985-06-19 1985-06-19 Inkjet head antistatic treatment method

Country Status (1)

Country Link
JP (1) JPH0643132B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02153744A (en) * 1988-07-21 1990-06-13 Canon Inc Ink-jet recording head
EP0468712A2 (en) 1990-07-21 1992-01-29 Canon Kabushiki Kaisha Manufacturing method for ink jet recording head and ink jet recording head
US5905515A (en) * 1994-09-01 1999-05-18 Brother Kogyo Kabushiki Kaisha Water-repellent film for a nozzle plate of an ink ejecting device
US6000783A (en) * 1991-03-28 1999-12-14 Seiko Epson Corporation Nozzle plate for ink jet recording apparatus and method of preparing said nozzle plate
US6016601A (en) * 1991-03-28 2000-01-25 Seiko Epson Corporation Method of preparing the nozzle plate
US6409931B1 (en) 1998-01-26 2002-06-25 Canon Kabushiki Kaisha Method of producing ink jet recording head and ink jet recording head

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02153744A (en) * 1988-07-21 1990-06-13 Canon Inc Ink-jet recording head
EP0468712A2 (en) 1990-07-21 1992-01-29 Canon Kabushiki Kaisha Manufacturing method for ink jet recording head and ink jet recording head
US5365255A (en) * 1990-07-21 1994-11-15 Canon Kabushiki Kaisha Manufacturing method for ink jet recording head and ink jet recording head
US5594479A (en) * 1990-07-21 1997-01-14 Canon Kabushiki Kaisha Method for manufacturing ink jet recording head having water-repellent material
EP0771659A2 (en) * 1990-07-21 1997-05-07 Canon Kabushiki Kaisha Manufacturing method for ink jet recording head and ink jet recording head
EP0771659A3 (en) * 1990-07-21 1997-10-01 Canon Kk Manufacturing method for ink jet recording head and ink jet recording head
US5796415A (en) * 1990-07-21 1998-08-18 Canon Kabushiki Kaisha Manufacturing method for ink jet recording head and ink jet recording head
US6000783A (en) * 1991-03-28 1999-12-14 Seiko Epson Corporation Nozzle plate for ink jet recording apparatus and method of preparing said nozzle plate
US6016601A (en) * 1991-03-28 2000-01-25 Seiko Epson Corporation Method of preparing the nozzle plate
US6357857B1 (en) 1991-03-28 2002-03-19 Kiyohiko Takemoto Nozzle plate for ink jet recording apparatus and method of preparing said nozzle plate
US5905515A (en) * 1994-09-01 1999-05-18 Brother Kogyo Kabushiki Kaisha Water-repellent film for a nozzle plate of an ink ejecting device
US6409931B1 (en) 1998-01-26 2002-06-25 Canon Kabushiki Kaisha Method of producing ink jet recording head and ink jet recording head

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