JPH03234539A - Ink jet recorder - Google Patents
Ink jet recorderInfo
- Publication number
- JPH03234539A JPH03234539A JP2983590A JP2983590A JPH03234539A JP H03234539 A JPH03234539 A JP H03234539A JP 2983590 A JP2983590 A JP 2983590A JP 2983590 A JP2983590 A JP 2983590A JP H03234539 A JPH03234539 A JP H03234539A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- recording head
- air flow
- inkjet recording
- ink
- 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
- 239000000463 material Substances 0.000 claims abstract description 41
- 238000007664 blowing Methods 0.000 claims description 12
- 238000009835 boiling Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 36
- 238000001514 detection method Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 238000007639 printing Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
ｆ産業上の利用分野］
本発明は、インクを吐出して被記録材に記録を行なうイ
ンクジェット記録装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use] The present invention relates to an inkjet recording apparatus that performs recording on a recording material by ejecting ink.
プリンタ、複写機、ファクシミリ等の記録装置は、画像
情報に基づいて、紙やプラスチック薄板等の被記録材上
にドツトパターンから成る画像を記録していくように構
成されている。2. Description of the Related Art Recording devices such as printers, copying machines, and facsimile machines are configured to record images consisting of dot patterns on recording materials such as paper and thin plastic plates based on image information.
前記記録装置は、記録方式により、インクジェット式、
ワイヤピント弐、サーマル式、レーザービーム式等に分
けることができ、そのうちのインクジェット式（インク
ジェット記録装置）は、記録ヘッドの吐出口から記録液
（インク）の小滴を吐出飛翔させ、これを被記録材に付
着させて記録するように構成されている。The recording device may be an inkjet type,
It can be divided into wire focus type, thermal type, laser beam type, etc. Of these, inkjet type (inkjet recording device) ejects small droplets of recording liquid (ink) from the ejection opening of the recording head and covers the droplets. It is configured to be attached to a recording material for recording.
このインクジェット記録装置は、ノンインパクト方式の
ため騒音が低く、多色のインクを使用するカラー画像の
記録が容易であるなどの特徴を有している。This ink jet recording apparatus has features such as low noise because it is a non-impact type, and easy recording of color images using multicolor inks.
ただし、インクジェット記録装置では、記録液（インク
）を微細な吐出口から直接吐出させて記録を行なうので
、常に吐出口からインクを吐出し得る状態に保つ必要が
あり、そのために、他の方式の記録装置では見られない
特別な配慮が必要となる。However, since inkjet recording devices perform recording by directly ejecting recording liquid (ink) from fine ejection orifices, it is necessary to maintain a state in which ink can be ejected from the ejection orifices at all times. This requires special considerations not seen with recording devices.
例えば、記録中に発生するインクミストや紙ケバ等の微
細な異物が、記録ヘッドと被記録材との間を浮遊するな
どして吐出口面に付着し、付着物によって吐出口が塞が
れて吐出不良（不吐出を含む）になる場合あり、この吐
出不良を解消するために、吐出口面を拭き取るワイパー
ブレードなどの清掃手段を設けることが行なわれている
。For example, minute foreign matter such as ink mist and paper fluff generated during recording can float between the recording head and the recording material and adhere to the ejection port surface, causing the ejection port to be blocked by the deposits. In some cases, this may result in ejection failure (including ejection failure), and in order to eliminate this ejection failure, cleaning means such as a wiper blade for wiping the ejection port surface is provided.
〔発明が解決しようとする技術的課題］しかしながら、
従来のインクジェット記録装置では、吐出口面に付着し
た後の異物を接触方式で清掃する方法が採られていたの
で、異物が付着した時点から清掃する時点までの間で吐
出不良が生じてしまうことがあった。[Technical problem to be solved by the invention] However,
Conventional inkjet recording devices use a contact method to clean foreign matter that has adhered to the ejection orifice surface, which can result in ejection failures between the time the foreign matter adheres and the time it is cleaned. was there.
本発明は上記技術的課題に鑑みてなされたものであり、
本発明の目的は、吐出時に発生するインクミストや紙ケ
バ等の異物が記録ヘッドの吐出口面に付着することを防
止し得るインクジェット記録装置を提供することである
。The present invention has been made in view of the above technical problems, and
An object of the present invention is to provide an inkjet recording apparatus that can prevent foreign matter such as ink mist and paper fluff generated during ejection from adhering to the ejection port surface of a printhead.
本発明は、記録ヘッドの吐出口からインクを吐出し、こ
れを被記録材に付着させて記録するインクジェット記録
装置において、前記記録ヘッドと前記被記録材との間に
空気流を生じさせる空気流発生手段を有する構成とする
ことにより、吐出時に発生するインクミストや祇ケバ等
の異物が記録ヘッドの吐出口面に付着することを防止し
得るインクジェット記録装置を提供するものである。The present invention relates to an inkjet recording apparatus that ejects ink from an ejection port of a recording head and makes the ink adhere to a recording material for recording. The present invention provides an inkjet recording apparatus that is configured to include a generating means and can prevent foreign matter such as ink mist and fluff generated during ejection from adhering to the ejection orifice surface of the printhead.
請求項２の発明は、上記構成において、前記空気流発生
手段が、空気を送る送風手段または空気を吸引する吸引
手段である構成とすることにより、前述の目的を達成す
るものである。The invention according to claim 2 achieves the above object by configuring the airflow generating means to be a blowing means for sending air or a suction means for sucking air.
請求項３の発明は、上記構成において、前記記録へノド
および前記被記録材の近傍に湿度検出手段を設け、その
信号に基づいて、前記送風手段または前記吸引手段を制
御する構成とすることにより、より効率的に前述の目的
を達成するものである。According to a third aspect of the invention, in the above structure, a humidity detection means is provided near the recording throat and the recording material, and the air blowing means or the suction means is controlled based on a signal from the humidity detection means. , which achieves the aforementioned objectives more efficiently.
以下、図面を参照して本発明を具体的に説明する。 Hereinafter, the present invention will be specifically explained with reference to the drawings.
第１図は、本発明によるインクジェット記録装置の一実
施例を示す模式的側面図である。FIG. 1 is a schematic side view showing an embodiment of an inkjet recording apparatus according to the present invention.
本実施例は、多色記録用の複数のフルマルチインクジェ
ット記録ヘッドを有するインクジェット記録装置に、本
発明を適用した場合を示す。This embodiment shows a case where the present invention is applied to an inkjet recording apparatus having a plurality of full multi-inkjet recording heads for multicolor recording.
第１図において、１は、紙幅にわたる複数のフルマルチ
ヘッドＩＡ、ＩＢ、ＩＣ，ＩＤから成る記録ヘッドであ
り、各フルマルチヘッドＩＡ〜ＩＤからは、それぞれ色
の異なる（例えば、イエロ、マゼンタ、シアン、ブラン
ク）液滴（インク滴）が吐出される。In FIG. 1, reference numeral 1 denotes a recording head consisting of a plurality of full multi-heads IA, IB, IC, and ID spanning the width of the paper. cyan, blank) droplets (ink droplets) are ejected.
各フルマルチヘッドＩＡ−１０には複数の吐出口が設け
られ、各吐出口の内部（液体流路）には印加電圧により
吐出用熱エネルギーを発生する電気熱変換体（発熱素子
等）が配設されている。Each full multi-head IA-10 is provided with a plurality of ejection ports, and inside each ejection port (liquid flow path), an electrothermal converter (heating element, etc.) that generates thermal energy for ejection by applied voltage is arranged. It is set up.
前記フルマルチヘッドＩＡ−ＬＤは、熱エネルギーを利
用してインクを吐出するインクジェット記録ヘッドであ
って、熱エネルギーを発生するための電気熱変換体を備
えたものである。The full multi-head IA-LD is an inkjet recording head that ejects ink using thermal energy, and is equipped with an electrothermal converter for generating thermal energy.
また、これらのインクジェット記録へラドＩＡ〜ＩＤは
、前記電気熱変換体によって印加される熱工ぶルギーに
より生しる膜沸騰による気泡の成長によって、吐出口よ
りインクを吐出させ、記録２は、前記フルマルチヘッド
ＩＡ〜ＩＤを固定するためのヘッド取り付は枠、３は、
用紙やプラスチック薄板等の被記録材を吸着し搬送する
ための搬送ヘルド、４は、送給ローラ６によって矢印Ｆ
方向に送られてきた被記録材を前記搬送ベルト３に静電
吸着させるための吸着帯電器、５は、各フルマルチヘッ
ドＩＡ−ＩＤに対応する色のインクを供給するための４
個のインクミストリンジ、をそれぞれ示す。In addition, these inkjet recording pads IA to ID eject ink from the ejection openings by the growth of bubbles due to film boiling produced by the heat applied by the electrothermal converter, and in the recording 2, The head mounting for fixing the full multi-heads IA to ID is a frame; 3 is a frame;
A conveyance heald 4 for adsorbing and conveying a recording material such as paper or a thin plastic plate is moved by an arrow F by a feeding roller 6.
an adsorption charger 5 for electrostatically adsorbing the recording material sent in the direction on the conveyor belt 3;
ink mist strings, respectively.
前記搬送ヘルド３は、エンドレスヘルドであり、矢印Ｈ
方向に駆動される。The transport heald 3 is an endless heald, and the arrow H
driven in the direction.
前記フルマルチへラド１で記録された被記録材は、前記
搬送ベルト３により、矢印Ｓ方向へ排出される。The recording material recorded by the full multi-layer disc 1 is discharged in the direction of arrow S by the conveyor belt 3.
また、７は記録ヘッド（フルマルチヘッド）１と記録さ
れる被記録材との間に矢印Ｔ方向の空気流を生じさせる
送風ファン、８は湿度検出手段、９は記録ヘッド１と記
録される被記録材との間から空気を吸引して矢印Ｔ方向
の空気流を生じさせる吸引ファン、をそれぞれ示す。Further, 7 is a blower fan that generates an air flow in the direction of arrow T between the recording head (full multi-head) 1 and the recording material to be recorded, 8 is a humidity detection means, and 9 is recorded as the recording head 1. A suction fan that suctions air from between the recording material and the recording material to generate an air flow in the direction of arrow T is shown.
前記送風ファン７および前記吸引ファン９は、それぞれ
で、または両方で、記録ヘッド１と被記録材との間に空
気流を生しさせる空気流発生手段を構成するものである
。The blower fan 7 and the suction fan 9 each or both constitute an airflow generating means for generating an airflow between the recording head 1 and the recording material.
図示の例では、前記送風ファン（空気流発生手段）７は
被記録材搬送方向で記録ヘッド１の上流側に配設され、
前記吸引ファン（空気流発生手段）９は記録へラド１の
下流側に配設されている。In the illustrated example, the blower fan (airflow generating means) 7 is disposed upstream of the recording head 1 in the recording material conveyance direction,
The suction fan (airflow generating means) 9 is arranged downstream of the recording head 1.
前記湿度検出手段８は、記録ヘッド１および被記録材の
近傍に配設されており、該記録ヘッドＩと該被記録材と
の間の隙間内の相対湿度を検出する湿度センサで構成さ
れている。The humidity detection means 8 is disposed near the recording head 1 and the recording material, and is composed of a humidity sensor that detects the relative humidity in the gap between the recording head I and the recording material. There is.
次に、以上の構成を存するインクジェット記録装置の動
作について説明する。Next, the operation of the inkjet recording apparatus having the above configuration will be explained.
インクジェット記録装置では、インク液滴を吐出した時
のインクミストが吐出口面に結露したり、浮遊ミストが
吐出口面に付着し、それらの表面張力等の影響でインク
吐出不良（不吐出を含む）に至ってしまう場合がある。In inkjet recording devices, when ink droplets are ejected, ink mist condenses on the ejection orifice surface, floating mist adheres to the ejection orifice surface, and the surface tension of these causes ink ejection failure (including non-ejection). ) may result.
そこで、記録時には、前記送風ファン（空気流発生手段
）７を作動させて、フルマルチヘッドｌと搬送ヘルド３
上の被記録材との間に矢印Ｔ方向の空気流を生しさせる
。Therefore, during recording, the blower fan (airflow generating means) 7 is operated to ensure that the full multi-head l and transport heald 3
An air flow in the direction of arrow T is generated between the upper recording material and the upper recording material.
図示の例では、送風ファン７で、矢印Ｔ方向、すなわち
、被記録材搬送方向と同方向の空気流を発生させること
により、記録ヘッド（フルマルチヘッド）Ｉと被記録材
との間の相対湿度を下げ、ミストの結露や浮遊ミストの
付着が防止される。In the illustrated example, by generating an air flow in the direction of arrow T, that is, in the same direction as the recording material conveyance direction, with the blower fan 7, the relative position between the recording head (full multi-head) I and the recording material is Reduces humidity and prevents mist condensation and floating mist from adhering.
なお、前記吸引ファン（もう一つの空気流発生手段）９
を同時に作動させても良く、また、上記送風ファン７に
替えてこの吸引ファン９のみを作動させても良く、実質
上同じ作用効果が得られる。Note that the suction fan (another air flow generating means) 9
may be operated at the same time, or only this suction fan 9 may be operated instead of the above-mentioned ventilation fan 7, and substantially the same effect can be obtained.
第２図は、第１図のインクジェット記録装置において、
フルマルチヘッドの異物付着防止を行なう時の一動作例
を示すフローチャートである。FIG. 2 shows the inkjet recording apparatus shown in FIG.
12 is a flowchart showing an example of an operation when preventing foreign matter from adhering to a full multi-head.
第２図において、ステップ３１０１で電源を投入して記
録装置を起動し、ステップ５１０２で記録信号が送られ
てきたか否かを判別する。In FIG. 2, in step 3101 the power is turned on to start the recording apparatus, and in step 5102 it is determined whether a recording signal has been sent.
記録信号が送られてきて記録動作を開始すると、ステッ
プ５１０３で送風ファン７を作動させる。When the recording signal is sent and the recording operation is started, the blower fan 7 is activated in step 5103.
記録信号が送られてこなければ、そのままとする。If no recording signal is sent, leave it as is.
次に、ステップ５１０４において、送風ファン７をオン
にした状態で記録信号の有無を判別し、記録信号があれ
ばそのまま送風ファン７の運転を継続し、記録信号の無
い非記録状態になれば、ステップ５１０５で送風ファン
７を停止させた後、ステップ５１０２へ戻り、以上の動
作を繰り返す。Next, in step 5104, it is determined whether or not there is a recording signal with the blower fan 7 turned on, and if there is a recording signal, the blower fan 7 continues to operate, and if it is in a non-recording state with no recording signal, After stopping the blower fan 7 in step 5105, the process returns to step 5102 and the above operations are repeated.
第３図は第２図のシーケンスにおける記録動作および送
風動作の関係を示すタイミングチャートであり、上記ス
テップ５１０４で記録信号が無くなって非記録状態にな
れば、第３図中に矢印で示すように次の記録動作が開始
されるまで送風動作を停止させる。FIG. 3 is a timing chart showing the relationship between the recording operation and the blowing operation in the sequence shown in FIG. The air blowing operation is stopped until the next recording operation starts.
前記送風ファン７の送風方向は、第１図にも示すように
、記録ヘッドｌからのインク滴吐出方向と直角に近けれ
ば近いほど良い。As shown in FIG. 1, the blowing direction of the blower fan 7 is preferably as close to perpendicular to the direction of ink droplet ejection from the recording head 1 as possible.
その理由は、送風方向が第１図中上向きの場合、すなわ
ち、記録ヘッド１に向かう成分がある場合には、吐出口
内に空気が押し込められたり、インクミストを吐出口面
に付着させて吐出不良を助長する傾向が生し、一方、送
風方向が下向きの場合、すなわち、被記録材に向かう成
分がある場合には、該被記録材にインクミストを付着さ
せて汚してしまう傾向が生しるからである。The reason for this is that if the air blow direction is upward in Figure 1, that is, if there is a component directed toward the recording head 1, air may be forced into the ejection ports or ink mist may adhere to the ejection port surface, causing ejection failure. On the other hand, when the blowing direction is downward, that is, when there is a component directed toward the recording material, there is a tendency to cause ink mist to adhere to the recording material and stain it. It is from.
また、送風ファン７の送風量については、吐出口密度が
４００ｄｐ ｉで吐出口数が２５６のハブルジェットヘ
ソドを使用し、記録速度１５０ｍ／秒で実際に記録した
場合、風量０．３９イ／秒で充分な効果が得られた。In addition, regarding the air flow rate of the ventilation fan 7, when actually recording was performed at a recording speed of 150 m/sec using a hub jet head with a discharge port density of 400 dpi and a number of discharge ports of 256, the air flow rate was 0.39 i/sec. A sufficient effect was obtained.
以上説明したように、空気流発生手段により、記録ヘッ
ドｌと被記録材との間に強制的に空気流を生じさせるこ
とにより、記録中におけるインクミストや紙粉等による
吐出不良を効果的に防止することができた。As explained above, by forcibly generating airflow between the recording head l and the recording material using the airflow generation means, ejection failures caused by ink mist, paper dust, etc. during recording can be effectively prevented. could be prevented.
なお、送風方向と被記録材搬送方向との関係については
、上記実施例のように同し方向にする他、逆向き（第１
図中で右向き）にしても同様の好結果が得られた。Regarding the relationship between the air blowing direction and the recording material conveyance direction, in addition to setting them in the same direction as in the above embodiment, they may also be set in the opposite direction (the first
Similar good results were obtained even when the lens was turned to the right (in the figure).
また、前述の動作例では、送風ファン７のみを作動させ
てか、これは、吸引ファン９のみ、あるいは送風ファン
７と吸引ファン９の両方を作動させて空気流を生じさせ
ても良く、同様の効果が得られた。In addition, in the above-mentioned operation example, the air flow may be generated by operating only the blower fan 7, only the suction fan 9, or both the blower fan 7 and the suction fan 9. The effect was obtained.
次に、第１図のインクジェット記録装置において吐出口
面の異物付着防止を行なう時の他の動作例、すなわち、
前記湿度検出手段（センサ）８を使用して異物付着防止
を行なう場合について説明する。Next, another example of the operation when preventing foreign matter from adhering to the ejection orifice surface in the inkjet recording apparatus shown in FIG.
A case will be described in which the humidity detection means (sensor) 8 is used to prevent foreign matter from adhering.
本実施例は、インクミストの量が増えるなどして相対湿
度が高くなると、吐出口面に該インクミストや紙粉等の
他の異物が付着し易くなるが、相対湿度が低い場合には
異物が付着しないか、付着してもその量が微小であるこ
とに鑑み、相対湿度が一定値を越えた時に前記空気流発
生手段を作動させるものである。In this example, when the relative humidity increases due to an increase in the amount of ink mist, the ink mist and other foreign matter such as paper powder tend to adhere to the ejection port surface, but when the relative humidity is low, foreign matter In view of the fact that the air does not adhere, or even if it does, the amount is minute, the airflow generating means is activated when the relative humidity exceeds a certain value.
第４図は湿度検出センサ８の特性を例示するグラフであ
り、同図において、センサ抵抗値は、相対湿度に対して
略放物線状に増加している。FIG. 4 is a graph illustrating the characteristics of the humidity detection sensor 8, and in the graph, the sensor resistance value increases approximately parabolically with respect to relative humidity.
異物付着防止動作においては、相対湿度が設定湿度を越
えた時、例えば、相対湿度が９５％に達し温度検出セン
サ８から高湿度信号Ｓ、が生した時に、送風ファン７を
オンにして相対湿度を低下させるように制御される。In the foreign matter adhesion prevention operation, when the relative humidity exceeds the set humidity, for example, when the relative humidity reaches 95% and a high humidity signal S is generated from the temperature detection sensor 8, the blower fan 7 is turned on to detect the relative humidity. controlled to reduce the
第５図は、この湿度検出センサ８を使用する場合の動作
を示すフローチャートである。FIG. 5 is a flowchart showing the operation when using this humidity detection sensor 8.
第５図において、ステップＳ２０１で電源をオンにして
記録装置を起動した後、記録状態または非記録状態に係
わらず、ステップ５２０１で相対湿度が設定値より高い
か低いかを判別する。In FIG. 5, after turning on the power and starting up the printing apparatus in step S201, whether the relative humidity is higher or lower than a set value is determined in step 5201, regardless of whether the printing state is in a printing state or a non-printing state.
そこで、設定値より高い場合には、ステップ５２０３で
送風ファン７をオンにし、記録ヘッド１および被記録材
の近傍の相対湿度を低下させる。Therefore, if the relative humidity is higher than the set value, the blower fan 7 is turned on in step 5203 to reduce the relative humidity near the recording head 1 and the recording material.
一方、ステップ５２０３で相対湿度が設定値より低い場
合は、そのままとし、送風ファン７は作動させない。On the other hand, if the relative humidity is lower than the set value in step 5203, the relative humidity is left as is and the blower fan 7 is not operated.
次に、ステップ５２０４で相対湿度が設定値より低くな
ったことが確認されたら、ステップ５２０５へ進んで送
風ファン７を停止させ、ステップ５２０２へ戻り、以上
の動作を繰り返す。Next, if it is confirmed in step 5204 that the relative humidity has become lower than the set value, the process proceeds to step 5205 to stop the blower fan 7, returns to step 5202, and repeats the above operation.
本実施例においても、上記動作例では送風ファン７のみ
を作動させてか、これは、吸引ファン９のみ、あるいは
送風ファン７と吸引ファン９の両方を作動させて空気流
を生じさせても良く、同様の効果が得られた。In this embodiment as well, in the above operation example, only the blower fan 7 is operated, or only the suction fan 9, or both the blower fan 7 and the suction fan 9 may be operated to generate the airflow. , similar effects were obtained.
以上の各実施例では、第１図にも示すように、送風ファ
ン７または吸引ファン９によって、被記録材の搬送方向
と同方向（矢印Ｔ）に空気流を発生させたが、この空気
流の方向は該被記録材の搬送方向と逆の向きに発生させ
ることもできる。In each of the above embodiments, as shown in FIG. The direction can also be generated in the opposite direction to the conveyance direction of the recording material.
すなわち、送風ファン７および／または吸引ファン９を
、記録ヘッド１に対して、第１図とは反対側に配置して
、被記録材搬送方向の空気流を発生させ得るように構成
することができる。That is, the blower fan 7 and/or the suction fan 9 can be arranged on the opposite side of the recording head 1 from that shown in FIG. can.
さらに、前記空気流は、被記録材搬送方向を横切る方向
（例えば、略直角の方向）に発生させることもできる。Furthermore, the air flow can also be generated in a direction transverse to the recording material conveyance direction (for example, in a substantially perpendicular direction).
この場合は、前記送風ファン７および／または吸引ファ
ン９は被記録材の両側または片側に配置されることにな
る。In this case, the blower fan 7 and/or the suction fan 9 are arranged on both sides or one side of the recording material.
以上説明した各実施例および代替構造例によれば、記録
へノド１の吐出口面と被記録材との間に送風ファン７お
よび／または吸引ファン９で強制的に空気流を発生させ
る空気流発生手段を配設したので、インク吐出時に発生
するインクミストや紙粉等の異物が吐出口面に付着する
ことを効果的に防止でき、記録ヘッドｌの該付着による
吐出不良を効果的に防止することができた。According to each of the embodiments and alternative structure examples described above, an air flow is forcibly generated between the discharge port surface of the recording gutter 1 and the recording material by the blower fan 7 and/or the suction fan 9. Since the generating means is provided, it is possible to effectively prevent foreign matter such as ink mist and paper dust generated during ink ejection from adhering to the ejection port surface, and effectively prevent ejection failure due to such adhesion on the recording head l. We were able to.
本発明は、特にインクジェット記録方式の中でもバブル
ジェット方式の記録装置において、優れた効果をもたら
すものである。INDUSTRIAL APPLICATION This invention brings about an outstanding effect especially in the recording device of a bubble jet method among the inkjet recording methods.
その代表的な構成や原理については、例えば、米国特許
第４７２３１２９号明細書、同第４７４０７９６号明細
書に開示されている基本的な原理を用いて行なうのが好
ましい。As for typical configurations and principles thereof, it is preferable to use the basic principles disclosed in, for example, US Pat. No. 4,723,129 and US Pat. No. 4,740,796.
この方式は、所謂オンデマンド型、コンティニュアス型
のいずれにも通用可能であるが、特に、オンデマンド型
の場合には、液体（インク）が保持されているシートや
液路に対して配置されている電気熱変換体に、記録情報
に対応じていて核沸騰を越える急速な温度上昇を与える
少なくとも一つの駆動信号を印加することによって、電
気熱変換体に熱エネルギーを発生せしめ、記録ヘッドの
熱作用面に膜沸膣させて、結果的にこの駆動信号に一対
一対応し液体（インク）内の気泡を形成出来るので有効
である。This method can be applied to both the so-called on-demand type and the continuous type, but especially in the case of the on-demand type, it is necessary to place the liquid (ink) on the sheet or liquid path where it is held. By applying at least one drive signal to the electrothermal transducer that is attached to the recording head, the electrothermal transducer generates thermal energy by applying at least one drive signal that corresponds to recorded information and causes a rapid temperature rise exceeding nucleate boiling. This is effective because it causes a film to boil on the heat acting surface of the ink, resulting in the formation of bubbles in the liquid (ink) in one-to-one correspondence with this drive signal.
この気泡の成長、収縮により吐出用開口を介して液体（
インク）を吐出させて、少なくとも一つの滴を形成する
。Due to the growth and contraction of these bubbles, liquid (
ink) to form at least one droplet.
この駆動信号をパルス形状とすると、即時適切に気泡の
成長収縮が行なわれるので、特に応答性に優れた液体（
インク）の吐出が達成でき、より好ましい。このパルス
形状の駆動信号としては、米国特許第４４６３３５９号
明細書、同第４３４５２６２号明細書に記載されている
ようなものが適している。If this drive signal is in the form of a pulse, bubble growth and contraction will occur immediately and appropriately, so liquids with particularly excellent responsiveness (
Ink) can be ejected, which is more preferable. As this pulse-shaped drive signal, those described in US Pat. No. 4,463,359 and US Pat. No. 4,345,262 are suitable.
尚、上記熱作用面の温度上昇率に関する発明の米国特許
第４３１３１２４号明細書に記載されている条件を採用
すると、更に優れた記録を行なうことができる。Further, if the conditions described in US Pat. No. 4,313,124 concerning the temperature increase rate of the heat acting surface are adopted, even more excellent recording can be achieved.
記録へ、ドの構成としては、上述の各明細書に開示され
ているような吐出口、液路、電気熱変換体の組み合わせ
構成（直線状ｉ流路又は直角液流路）の他に熱作用部が
屈曲する領域に配置されている構成を開示する米国特許
第４５５８３３３号明細書、米国特許第４４５９６００
号明細書を用いた構成も本発明に含まれるものである。For the record, in addition to the combined configuration of the discharge port, liquid path, and electrothermal converter (straight i-channel or right-angled liquid channel) as disclosed in the above-mentioned specifications, U.S. Pat. No. 4,558,333 and U.S. Pat. No. 4,459,600 disclose a configuration in which the action portion is arranged in a bending region.
The present invention also includes a configuration using the specification of the above specification.
加えて、複数の電気熱変換体に対して、共通するスリン
トを電気熱変換体の吐出部とする構成を開示する特開昭
５９年第１２３６７０号公報や熱エネルギーの圧力波を
吸収する開孔を吐出部に対応させる構成を開示する特開
昭５９年第１３８４６１号公報に基づいた構成としても
本発明は有効である。In addition, Japanese Patent Application Laid-Open No. 123670 of 1982 discloses a configuration in which a common slint is used as a discharge part for a plurality of electrothermal converters, and a hole absorbing pressure waves of thermal energy is disclosed. The present invention is also effective as a configuration based on Japanese Patent Application Laid-Open No. 138461 of 1981, which discloses a configuration in which a discharge portion corresponds to a discharge portion.
更に、記録装置が記録できる最大記録媒体の幅に対応し
た長さを有するフルラインタイプの記録ヘッドとしては
、上述した明細書に開示されているような複数記録ヘッ
ドの組み合わせによって、その長さを満たす構成や一体
的に形成された一個の記録ヘッドとしての構成のいずれ
でも良いが、本発明は、上述した効果を一層有効に発揮
することができる。Furthermore, as a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus, the length can be increased by combining multiple recording heads as disclosed in the above-mentioned specification. Either a configuration that satisfies the above requirements or a configuration as a single recording head formed integrally may be used, but the present invention can more effectively exhibit the above-mentioned effects.
加えて、装置本体に装着されることで、装置本体との電
気的な接続や装置本体からのインクの供給が可能になる
交換自在のチップタイプの記録ヘッド、あるいは記録ヘ
ッド自体に一体的に設けられたカートリッジタイプの記
録ヘッドを用いた場合にも本発明は有効である。In addition, a replaceable chip-type recording head that is attached to the device body enables electrical connection to the device body and ink supply from the device body, or a chip-type recording head that is installed integrally with the recording head itself. The present invention is also effective when a cartridge type recording head is used.
又、本発明の記録装置の構成として設けられる、記録ヘ
ッドに対しての回復手段、予備的な補助手段等を付加す
ることは本発明の効果を一層安定できるので好ましいも
のである。Further, it is preferable to add recovery means, preliminary auxiliary means, etc. for the recording head, which are provided as a configuration of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized.
これらを具体的に挙げれば、記録ヘッドに対しての、キ
ャンピング手段、クリーニング手段、加圧或は吸引手段
、電気熱変換体或はこれとは別の加熱素子或はこれらの
組み合わせによる予備加熱手段、記録とは別の吐出を行
なう予備吐出モードを行なうことも安定した記録を行な
うために有効である。Specifically, these include a camping means, a cleaning means, a pressurizing or suction means, an electrothermal transducer or a separate heating element, or a preheating means for the recording head using a combination thereof. It is also effective to perform a preliminary ejection mode in which ejection is performed separately from printing in order to perform stable printing.
更に、記録装置の記録モードとしては黒色等の主流色の
みの記録モードだけではなく、記録へノドを一体的に構
成するか複数個の組み合わせによってでもよいが、異な
る色の復色カラー又は、混色によるフルカラーの少なく
とも一つを備えた装置にも本発明は極めて有効である。Furthermore, the recording mode of the recording device is not limited to a recording mode in which only mainstream colors such as black are recorded, but it is also possible to configure the recording nozzle integrally or by combining a plurality of recording nozzles; The present invention is also extremely effective for devices equipped with at least one full color image.
以上の説明から明らかなごとく、本発明によれば、記録
へノドの吐出口からインクを吐出し、これを被記録材に
付着させて記録するインクジェット記録装置において、
前記記録ヘッドと前記被記録材との間に空気流を生しさ
せる空気流発生手段を有する構成としたので、吐出時に
発生するインクミストや祇ケバ等の異物が記録へノドの
吐出口面に付着することを防止し得るインクジェット記
録装置が提供される。As is clear from the above description, according to the present invention, in an inkjet recording apparatus that ejects ink from the ejection port of the gutter to record and makes the ink adhere to a recording material for recording,
Since the configuration includes an airflow generating means for generating an airflow between the recording head and the recording material, foreign matter such as ink mist and fluff generated during ejection is prevented from reaching the ejection opening surface of the recording gutter. An inkjet recording device capable of preventing adhesion is provided.
請求項２の発明によれば、上記構成において、前記空気
流発生手段が、空気を送る送風手段または空気を吸引す
る吸引手段である構成としたので、前述と同様の効果を
達成し得るインクジェット記録装置が提供される。According to the invention of claim 2, in the above structure, the air flow generating means is configured to be a blowing means for sending air or a suction means for sucking air, so that the inkjet recording can achieve the same effect as described above. Equipment is provided.
請求項３の発明によれば、上記構成において、前記記録
へノドおよび前記被記録材の近傍に湿度検出手段を設け
、その信号に基づいて、前記送風手段または前記吸引手
段を制御する構成としたので、より効率的に前述と同様
の効果を達成し得るインクジェット記録装置が提供され
る。According to the invention of claim 3, in the above structure, a humidity detection means is provided near the recording throat and the recording material, and the air blowing means or the suction means is controlled based on a signal from the humidity detection means. Therefore, an inkjet recording apparatus is provided that can more efficiently achieve the same effects as described above.
第１図は本発明によるインクジェット記録装置の一実施
例を模式的に示す側面図、第２図は本発明によるインク
ジェット記録装置の一動作例を示すフローチャート、第
３図は第２図の動作における記録動作および送風ファン
駆動のタイミングチャート、第４図は第１図中の湿度検
出手段の特性を例示するグラフ、第５図は本発明による
インクジェット記録装置の他の動作例を示すフローチャ
ートである。
以下に、図面中の主要な構成部分を表す符号を列挙する
。
Ｌ ＩＡ、ＩＢ、Ｉ Ｃ，Ｌ Ｄ−−−−−−・記録
ヘッド、３−−−−被記録材搬送手段〔吸着搬送ヘルド
〕、５・−インクカートリッジ、７・−−一−−・送風
ファン（空気流発生手段）、８−・・−湿度検出手段（
センサ）、９−−−−一吸引フアン（空気流発生手段）
。FIG. 1 is a side view schematically showing an embodiment of an inkjet recording device according to the present invention, FIG. 2 is a flowchart showing an example of the operation of the inkjet recording device according to the present invention, and FIG. 3 is a side view schematically showing an example of the operation of the inkjet recording device according to the present invention. FIG. 4 is a graph illustrating the characteristics of the humidity detecting means in FIG. 1, and FIG. 5 is a flowchart illustrating another example of the operation of the inkjet recording apparatus according to the present invention. Below, symbols representing main components in the drawings are listed. L IA, IB, I C, LD --- Recording head, 3 --- Recorded material conveyance means [suction conveyance heald], 5 -- Ink cartridge, 7 --- 1 --- Blow fan (airflow generation means), 8-...-humidity detection means (
(sensor), 9 ---- one suction fan (air flow generating means)
.
Claims (7)
被記録材に付着させて記録するインクジェット記録装置
において、前記記録ヘッドと前記被記録材との間に空気
流を生じさせる空気流発生手段を有することを特徴とす
るインクジェット記録装置。(1) In an inkjet recording device that ejects ink from an ejection port of a recording head and attaches it to a recording material for recording, airflow generation that generates an airflow between the recording head and the recording material An inkjet recording device characterized by having a means.
は空気を吸引する吸引手段であることを特徴とする請求
項１に記載のインクジェット記録装置。(2) The inkjet recording apparatus according to claim 1, wherein the air flow generating means is a blowing means for sending air or a suction means for sucking air.
検出手段を設け、その信号に基づいて、前記送風手段ま
たは前記吸引手段を制御することを特徴とする請求項２
に記載のインクジェット記録装置。(3) A humidity detecting means is provided near the recording head and the recording material, and the blowing means or the suction means is controlled based on a signal from the humidity detecting means.
The inkjet recording device described in .
発生させる方向が、主走査方向または副走査方向である
ことを特徴とする請求項２に記載のインクジェット記録
装置。(4) The inkjet recording apparatus according to claim 2, wherein the direction in which air flow is generated between the recording head and the recording material is a main scanning direction or a sub-scanning direction.
応じて制御することを特徴とする請求項２に記載のイン
クジェット記録装置。(5) The inkjet recording apparatus according to claim 2, wherein the blowing means or the suction means is controlled according to an image signal.
クを吐出する記録ヘッドであって、熱エネルギーを発生
するための電気熱変換体を備えているインクジェット記
録ヘッドであることを特徴とする請求項１に記載のイン
クジェット記録装置。(6) A claim characterized in that the recording head is an inkjet recording head that ejects ink using thermal energy and is equipped with an electrothermal converter for generating thermal energy. Item 1. The inkjet recording device according to item 1.
ーにより生じる膜沸騰による気泡の成長によって、吐出
口よりインクを吐出させることを特徴とする請求項３に
記載のインクジェット記録装置。(7) The inkjet recording apparatus according to claim 3, wherein the ink is ejected from the ejection port by the growth of bubbles due to film boiling caused by the thermal energy applied by the electrothermal converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2983590A JPH03234539A (en) | 1990-02-09 | 1990-02-09 | Ink jet recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2983590A JPH03234539A (en) | 1990-02-09 | 1990-02-09 | Ink jet recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03234539A true JPH03234539A (en) | 1991-10-18 |
Family
ID=12287075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2983590A Pending JPH03234539A (en) | 1990-02-09 | 1990-02-09 | Ink jet recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03234539A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0604029A2 (en) * | 1992-12-21 | 1994-06-29 | NCR International, Inc. | Printing system including an ink jet printer |
| EP0790129A2 (en) * | 1996-02-13 | 1997-08-20 | Canon Kabushiki Kaisha | Liquid ejection apparatus, head unit and ink-jet cartridge |
| US6281912B1 (en) | 2000-05-23 | 2001-08-28 | Silverbrook Research Pty Ltd | Air supply arrangement for a printer |
| WO2001089847A1 (en) * | 2000-05-23 | 2001-11-29 | Silverbrook Research Pty. Ltd. | Air supply arrangement for a printer |
| WO2001089848A1 (en) * | 2000-05-24 | 2001-11-29 | Silverbrook Research Pty Ltd | Printhead capping arrangement |
| EP1273449A3 (en) * | 2001-07-06 | 2003-08-13 | Illinois Tool Works Inc. | Low debris fluid jetting system |
| US6652078B2 (en) | 2000-05-23 | 2003-11-25 | Silverbrook Research Pty Ltd | Ink supply arrangement for a printer |
| US6796731B2 (en) | 2000-05-23 | 2004-09-28 | Silverbrook Research Pty Ltd | Laminated ink distribution assembly for a printer |
| WO2004113083A1 (en) | 2003-06-13 | 2004-12-29 | Dimatix, Inc. | Apparatus for depositing droplets |
| AU2005200190B2 (en) * | 2000-05-24 | 2005-02-24 | Silverbrook Research Pty Ltd | Printer having printhead assembly with capping arrangement |
| AU2004233535B2 (en) * | 2000-05-24 | 2005-02-24 | Zamtec Limited | A printer including a printhead having positive air pressure zone |
| US6923866B2 (en) | 2003-06-13 | 2005-08-02 | Spectra, Inc. | Apparatus for depositing droplets |
| US6969144B2 (en) | 2002-11-23 | 2005-11-29 | Silverbrook Research Pty Ltd | Printhead capping mechanism with rotary platen assembly |
| US6984080B2 (en) | 2000-05-23 | 2006-01-10 | Silverbrook Research Pty Ltd | Laminated distribution structure |
| US6988840B2 (en) | 2000-05-23 | 2006-01-24 | Silverbrook Research Pty Ltd | Printhead chassis assembly |
| US7070257B2 (en) * | 2000-09-15 | 2006-07-04 | Silverbrook Research Pty Ltd | Double-sided printer |
| AU2005202041B2 (en) * | 2000-05-24 | 2006-08-10 | Zamtec Limited | Sealing means for an inkjet printhead |
| AU2005202040B2 (en) * | 2000-05-24 | 2006-08-17 | Zamtec Limited | Reducing nozzle buildup by providing positive air pressure zone |
| US7213989B2 (en) | 2000-05-23 | 2007-05-08 | Silverbrook Research Pty Ltd | Ink distribution structure for a printhead |
| SG152033A1 (en) * | 2000-05-24 | 2009-05-29 | Silverbrook Res Pty Ltd | Printhead with air supply arrangement. |
| WO2011090487A1 (en) * | 2010-01-25 | 2011-07-28 | Hewlett-Packard Development Company, L.P. | Hard imaging devices and hard imaging device operational methods |
| JP2016097658A (en) * | 2014-11-26 | 2016-05-30 | 京セラドキュメントソリューションズ株式会社 | Ink jet recording device |
-
1990
- 1990-02-09 JP JP2983590A patent/JPH03234539A/en active Pending
Cited By (67)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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