JPS612564A - Inkjet recording head - Google Patents
Inkjet recording headInfo
- Publication number
- JPS612564A JPS612564A JP12169284A JP12169284A JPS612564A JP S612564 A JPS612564 A JP S612564A JP 12169284 A JP12169284 A JP 12169284A JP 12169284 A JP12169284 A JP 12169284A JP S612564 A JPS612564 A JP S612564A
- Authority
- JP
- Japan
- Prior art keywords
- control electrodes
- inkjet recording
- recording head
- electrodes
- control
- 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.)
- Pending
Links
- 230000006866 deterioration Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters 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
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters 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
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
- B41J2002/061—Ejection by electric field of ink or of toner particles contained in ink
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、多数の制御電極を設けている下板部材と上板
部材と側板部材とによりインク室を形成してなるインク
ジェット記録用ヘッドに関し、特に平面走査可能なスリ
ットノズルを有するインクジェット記録用ヘッドに関す
るものである。Detailed Description of the Invention [Field of Application of the Invention] The present invention relates to an inkjet recording head in which an ink chamber is formed by a lower plate member provided with a large number of control electrodes, an upper plate member, and a side plate member. In particular, the present invention relates to an inkjet recording head having a slit nozzle capable of plane scanning.
従来のこの種のインクジェット記録用ヘッドは。 This type of conventional inkjet recording head.
例えば特開昭５５−５１５６５号公報に開示されている
ように、インク室には多数の制御用電極が並設されてい
る。記録時これらの制御用電極は画像情報に対応した電
圧が印加され、電圧が印加された電極付近のインクを帯
電し、これにより、インクが記録紙方向に吸引されるよ
うにしている。For example, as disclosed in Japanese Patent Application Laid-Open No. 55-51565, a large number of control electrodes are arranged in parallel in an ink chamber. During recording, a voltage corresponding to image information is applied to these control electrodes, and the ink near the electrodes to which the voltage is applied is charged, so that the ink is attracted toward the recording paper.
このような従来のインクジェット記録用ヘッドにおいて
は、制御電極間はインクを介し容量成分で電気的につな
がっている。したがって、制御電極に電圧を印加するこ
とにより、インクは帯電される。このため、電圧を印加
した場合、制御電極の電位はある時定数で立上がってい
く。この時定数は各制御電極と接しているインクの形状
や電気的条件により決まる。In such a conventional inkjet recording head, the control electrodes are electrically connected via ink by a capacitive component. Therefore, by applying a voltage to the control electrode, the ink is charged. Therefore, when a voltage is applied, the potential of the control electrode rises with a certain time constant. This time constant is determined by the shape and electrical conditions of the ink in contact with each control electrode.
ここで、多数並設された制御電極のうち両端付近ではな
い制御電極においては、記録のために選ばれて印加され
る制御電極の近傍の制御電極は電位的に接地されている
ため、制御電極の電気的条件が一様となる。このため、
制御電極の容量はほぼ均一となり、制御電極上のインク
の帯電量も均一となる。このため、一様なインク滴によ
る記録が可能である。しかし、多数並設された制御電極
のうち両端付近の制御電極においては、片方の隣に制御
電極がないか少ないため、制御電極の電気的条件は一様
とはならない。このため、両端付近の制御電極の容量は
、制御電極のない側の多量のインクのために、両端付近
ではない制御電極の容量に比べ大きくなっている。Here, among the many control electrodes arranged in parallel, among the control electrodes that are not near both ends, the control electrodes near the control electrode selected for recording and applied are electrically grounded, so the control electrodes The electrical conditions become uniform. For this reason,
The capacitance of the control electrode becomes almost uniform, and the amount of charge of the ink on the control electrode also becomes uniform. Therefore, recording using uniform ink droplets is possible. However, among the many control electrodes arranged in parallel, the control electrodes near both ends have no or only a few control electrodes adjacent to one side, so the electrical conditions of the control electrodes are not uniform. Therefore, the capacitance of the control electrodes near both ends is larger than the capacitance of the control electrodes not near both ends due to the large amount of ink on the side without the control electrodes.
このように、このヘッドによる記録は、電気的時定数が
両端付近の制御電極と、そうでない制御電極とで異なる
ため、記録ドツト径の不均二性が発生し、印画品質が低
下する。As described above, in recording with this head, the electrical time constant differs between the control electrodes near both ends and the control electrodes other than those, resulting in non-uniformity in recording dot diameter and deterioration of printing quality.
本発明の目的は、インクジェット記録用ヘッドにおいて
、ヘッド全面において、むらのない記録を行うことので
きるインクジェット記録用ヘッドを提供することにある
。An object of the present invention is to provide an inkjet recording head that can perform recording without unevenness over the entire surface of the head.
本発明のインクジェット記録用ヘッドは、多数並設され
た制御電極の両端側に記録に寄与しない補助電極を設け
ると共に、この補助電極を電位的に接地することにより
、制御電極の全ての容量を均一にしたことを特徴とする
ものである。In the inkjet recording head of the present invention, auxiliary electrodes that do not contribute to recording are provided on both ends of a large number of control electrodes arranged in parallel, and the auxiliary electrodes are electrically grounded to make the capacitance of all the control electrodes uniform. It is characterized by the following.
以下、本発明のインクジェット記録用ヘッドの一実施例
を第１図により説明する。Hereinafter, one embodiment of the inkjet recording head of the present invention will be described with reference to FIG.
下板２には多数の制御電極１とその両端に制御電極と同
じピッチ、幅で記録に寄与しない補助電極１′が設けら
れている６３は上板、４は側板であり、これら下板２．
上板３．側板４によりインク室５が形成されている。制
御電極１には、ドライバ６により電圧に変換された通信
情報が印加される。また、補助電極１′の電位は、イン
ク吸引不能なＯｖ、即ち電位的に接地されている。The lower plate 2 is provided with a large number of control electrodes 1 and auxiliary electrodes 1' which do not contribute to recording and have the same pitch and width as the control electrodes at both ends. 63 is the upper plate, 4 is the side plate, and these lower plate 2 ．．
Top plate 3. An ink chamber 5 is formed by the side plate 4. Communication information converted into voltage by a driver 6 is applied to the control electrode 1 . Further, the potential of the auxiliary electrode 1' is Ov, where ink cannot be sucked, that is, the potential of the auxiliary electrode 1' is grounded.
これにより、記録のために選ばれ、印加される制御電極
１に近傍の電極は、電位的に接地されるが、前記補助電
極１′の存在のために、両端付近の制御電極の電気容量
は両端付近でない制御電極の電気容量と同一になり、こ
のためノズル全面において、記録のためインクに帯電す
る量が一様となる。As a result, the electrodes near the control electrode 1 selected for recording and to which the voltage is applied are electrically grounded, but due to the presence of the auxiliary electrode 1', the capacitance of the control electrode near both ends is The capacitance is the same as that of the control electrodes that are not near both ends, so that the amount of charge on the ink for recording becomes uniform over the entire surface of the nozzle.
よって、すべての制御電極１の時定数が等しくなり、ノ
ズル全面即ちヘッド全面において、記録ドツトの均一性
が良く、むらのない高品質な記録が可能となる６
次に１本発明のインクジェット記録用ヘッドの他の実施
例を第２図により説明する。Therefore, the time constants of all the control electrodes 1 are equal, and the uniformity of recording dots is good over the entire surface of the nozzle, that is, the entire surface of the head, making it possible to perform high-quality recording without unevenness.6 Next, 1. Another embodiment of the head will be described with reference to FIG.
下板２には多数の制御電極１と、その両端に制御電極と
同じ間隔で制御電極１より幅広い補助電極１′が設けら
れている。また、補助電極１′は電位的に接地されてい
る。The lower plate 2 is provided with a large number of control electrodes 1, and auxiliary electrodes 1', which are wider than the control electrodes 1, are provided at both ends thereof at the same spacing as the control electrodes. Further, the auxiliary electrode 1' is electrically grounded.
これにより、上述の実施例と同様に、ノズル全面におい
てむらのない高品質な記録が可能となる。This makes it possible to perform high-quality recording without unevenness over the entire surface of the nozzle, similar to the above-described embodiment.
本発明によれば、すべての制御電極１の容量が均一とな
るので、ヘッド全面においてむらのない高品質な記録が
得られる効果がある。According to the present invention, since the capacitance of all the control electrodes 1 becomes uniform, it is possible to obtain uniform and high-quality recording over the entire surface of the head.
第１図は本発明のインクジェット記録用ヘッドの一実施
例を説明する正面図、第２図は本発明のインクジェット
記録用ヘッドの他の実施例を説明する正面図である。
ｌ・・・制御電極、１′・・・補助電極、２・・・下板
、３・・・上板、４・・・側板、５・・・インク室、６
・・・ドライバ、７・・・画像信号。
第 １０
業Ｚ邑FIG. 1 is a front view illustrating one embodiment of the inkjet recording head of the present invention, and FIG. 2 is a front view illustrating another embodiment of the inkjet recording head of the present invention. l... Control electrode, 1'... Auxiliary electrode, 2... Lower plate, 3... Upper plate, 4... Side plate, 5... Ink chamber, 6
... Driver, 7... Image signal. No. 10 Business Z Village
Claims (1)
と側板部材とによりインク室を形成してなるインクジェ
ット記録用ヘッドにおいて、前記下板部材の制御電極群
の両端に、記録に寄与しない補助電極を設ける共に、こ
の補助電極を電位的に接地したことを特徴とするインク
ジェット記録用ヘッド。1. In an inkjet recording head in which an ink chamber is formed by a lower plate member provided with a large number of control electrodes, an upper plate member, and a side plate member, recording electrodes are provided at both ends of the control electrode group of the lower plate member. An inkjet recording head characterized in that an auxiliary electrode that does not contribute is provided and the auxiliary electrode is electrically grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12169284A JPS612564A (en) | 1984-06-15 | 1984-06-15 | Inkjet recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12169284A JPS612564A (en) | 1984-06-15 | 1984-06-15 | Inkjet recording head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS612564A true JPS612564A (en) | 1986-01-08 |
Family
ID=14817513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12169284A Pending JPS612564A (en) | 1984-06-15 | 1984-06-15 | Inkjet recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS612564A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01294145A (en) * | 1988-05-18 | 1989-11-28 | Komatsu Forklift Co Ltd | Conveyor for roll type conveyed material |
| JPH0682014U (en) * | 1993-05-01 | 1994-11-25 | 有限会社新港タイヤ商事 | Tire lifting device |
-
1984
- 1984-06-15 JP JP12169284A patent/JPS612564A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01294145A (en) * | 1988-05-18 | 1989-11-28 | Komatsu Forklift Co Ltd | Conveyor for roll type conveyed material |
| JPH0682014U (en) * | 1993-05-01 | 1994-11-25 | 有限会社新港タイヤ商事 | Tire lifting device |
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