JP4106970B2 - Inkjet recording device - Google Patents

Inkjet recording device Download PDF

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Publication number
JP4106970B2
JP4106970B2 JP2002162889A JP2002162889A JP4106970B2 JP 4106970 B2 JP4106970 B2 JP 4106970B2 JP 2002162889 A JP2002162889 A JP 2002162889A JP 2002162889 A JP2002162889 A JP 2002162889A JP 4106970 B2 JP4106970 B2 JP 4106970B2
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Japan
Prior art keywords
ink
recording
recording medium
area
recording apparatus
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Expired - Fee Related
Application number
JP2002162889A
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Japanese (ja)
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JP2004009366A (en
Inventor
強 佐野
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.)
Seiko Epson Corp
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Seiko Epson Corp
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Filing date
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Priority to JP2002162889A priority Critical patent/JP4106970B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、印字データに基づいてインクを液滴として記録媒体に付着させて印刷を行うインクジェット記録装置に関する。
【0002】
【従来の技術】
ファクシミリ、カラーコピー機、ターミナルプリンタなど記録装置の記録ヘッドには、構造が簡単で容易にカラーデータが印刷が可能で、しかもコストが低いインクジェット記録ヘッドが使用されている。
一方、記録装置には記録ヘッドの他に記録媒体を印刷領域に搬送する給紙機構が設けられているが、単票紙を給紙する機構にあっては、複数枚が一度に印刷領域に搬送されやすく、これを防止するため、特開平5-105246号公報、特開平5-178483号公報、特開平8-24819号公報に見られるように、単票紙を格納するカセットに重送防止機構が設けられている。
【0003】
一方、インクジェット記録ヘッドのカラー印刷機能をより積極的に利用して写真品質の印刷を行う場合には、印画紙と同程度の厚みのベース材に、高分子材料からなる滲み止め層を形成した写真品質記録媒体が使用される。
【0004】
【発明が解決しようとする課題】
このような写真品質記録媒体は、高分子材料層が形成されている関係上、給紙機構による印刷領域への搬送時の相互の摩擦により静電気が発生し、静電吸着力により重送が発生しやすくなる。
本発明はこのような問題に鑑みてなされたものであって、その目的とするところは、インクジェット記録ヘッドの特性を積極的に利用して、特別な重送防止機構を必要とすることなく、写真品質記録媒体を一枚ずつ確実に印刷領域に供給することができるインクジェット記録装置を提供することである。
【0005】
【課題を解決するための手段】
このような問題を解消するために請求項1の発明においては、記録媒体収容領域から記録媒体を記録領域に搬送し、記録ヘッドからインクの液滴を選択的に前記記録媒体に吐出させるインクジェット記録装置において、前記吐出されたインクの液滴のミスト及び吐出されたインクの溶媒蒸気を前記記録媒体収容領域に導く手段を備えるようにした。
また、請求項2の発明においては、録媒体収容領域から記録媒体を記録領域に搬送し、記録ヘッドからインクの液滴を選択的に前記記録媒体に吐出し、また前記記録ヘッドへのインクの充填動作、及びインク滴吐出回復動作により排出されるインクを収容する廃インク溜を備えたインクジェット記録装置において、前記廃インク溜のインクの溶媒蒸気を前記記録媒体収容領域に導く手段を備えるようにした。
【0006】
【作用】
インク溶媒の蒸気により記録媒体の電荷の放電が促され、静電吸着力が低下して重送が防止される。
【0007】
【発明の実施の態様】
そこで以下に本発明の詳細を図示した実施例に基づいて説明する。
図1は、本発明のインクジェット記録装置の一実施例を示すものであって、記録装置本体1は、その中央部に単票紙を収容するカセット3が装着される装填口2と、印刷が終了した単票紙を排出する排出口4が形成されている。
【0008】
図2は、同上記録装置の印刷機構部の一実施例を示すものであって、記録ヘッド5は、図示しないインクタンクからインクの供給を受けつつ、キャリッジ6により記録媒体Pの幅方向に往復移動して記録媒体に印刷データに対応したインク滴を吐出する。
【0009】
カセット3の下部には、記録ヘッド5へのインクの充填動作や、インク滴吐出回復動作により排出されたインクを収容する廃インク溜7が配置されている。
また、印刷領域からカセット3の下部に延びるダクト8が設けられ、このダクト8には印刷領域からカセット3の下部に気体を送り出す送気手段9が設けられている。
【0010】
この実施例において、印刷を開始すると、カセット3に収容された単票紙が送り出しローラ10により1枚引き出されて記録領域に搬送され、所定の位置にセットされる。印刷データに対応して記録ヘッド5からインク滴が吐出されて印刷が開始される。
【0011】
ところで、カセット3は、廃インク溜7の上部に位置しているため、装置の暖気による滞留により廃インク溜7のインク溶媒の蒸気が流れ込み記録媒体の電荷が放電される。なお、放電の効果を高めるためには、カセット3の底面に蒸気の流入する貫通孔を形成したり、また導電処理を施しておくのが望ましい。
【0012】
一方、印刷が開始されて記録ヘッド5からインク滴が吐出されている状態では、インクミストや、記録媒体Pのインク滴から揮散したインク溶媒の蒸気が送気手段9によりダクト8を経由してカセット3に送り込まれ、単票紙に帯電していた電荷の放電が促進される。
【0013】
なお、上述の実施例においては印刷時に記録ヘッド5から吐出されるインク滴に起因するインク溶媒の蒸気を送気手段により強制的に記録媒体の収容領域に送り込んでいるが、カセットを、図3に示したように記録ヘッド5の走査領域よりも上部に配置することにより、送気手段を必要とすることなく、インク滴による蒸気を記録媒体の収容領域に送り込むことができる。
また、レイアウト上、廃インク溜7を記録媒体の収容領域の下方に配置できない場合には、ダクト等の気体ガイド手段により廃インク溜の蒸気を記録媒体の収容領域に導いても同様の作用を奏する。
【0014】
また、上述の実施例においては、インクジェット記録ヘッドを往復移動させて印刷するシリアル記録方式のものに例をとって説明したが、印刷幅程度の記録領域を備えたライン型インクジェット記録ヘッドを使用する記録装置に適用しても同様の作用を奏することは明らかである。
【0015】
さらに、上述の実施例においては、印刷データに対応してインク滴を吐出するオンデマンド型記録ヘッドを使用する記録装置に例を採って説明したが、インク滴を印刷データにかかわり無く発生させ、印刷データに対応して静電気力により記録媒体に移動させるコンテニアス型記録装置にあっては、不用なインクを受けるガターのインク溶媒を利用することにより、同様の作用を奏することは明らかである。
【0016】
【発明の効果】
以上説明したように本発明によれば、インク溶媒の蒸気を積極的に利用して記録媒体が収容されている領域の湿度を高めることができ、比較的静電気が生じやすい記録媒体であっても、重送を可及的に防止することができる。
【図面の簡単な説明】
【図1】本発明のインクジェット記録装置の一実施例を示す図である。
【図2】本発明のインクジェット記録装置の一実施例を示す断面図である。
【図3】本発明のインクジェット記録装置の他の実施例を示す断面図である。
【符号の説明】
1 記録装置本体
2 カセット
3 装填口
5 記録ヘッド
6 キャリッジ
7 廃インク溜
8 ダクト
9 送気手段
P 記録媒体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ink jet recording apparatus that performs printing by attaching ink as droplets to a recording medium based on print data.
[0002]
[Prior art]
As a recording head of a recording apparatus such as a facsimile, a color copier, or a terminal printer, an ink jet recording head that has a simple structure, can easily print color data, and is low in cost is used.
On the other hand, in addition to the recording head, the recording apparatus is provided with a paper feed mechanism that transports the recording medium to the print area. In order to prevent this from being easily transported, as shown in Japanese Patent Application Laid-Open No. 5-105246, Japanese Patent Application Laid-Open No. 5-178483, and Japanese Patent Application Laid-Open No. A mechanism is provided.
[0003]
On the other hand, when photographic quality printing is performed more positively using the color printing function of the ink jet recording head, a bleeding prevention layer made of a polymer material is formed on the base material having the same thickness as the photographic paper. Photo quality recording media are used.
[0004]
[Problems to be solved by the invention]
In such a photographic quality recording medium, because a polymer material layer is formed, static electricity is generated due to mutual friction during conveyance to the printing area by the paper feed mechanism, and double feeding is generated due to electrostatic adsorption force. It becomes easy to do.
The present invention has been made in view of such a problem, and the object thereof is to positively utilize the characteristics of the ink jet recording head without requiring a special double feed prevention mechanism, It is an object of the present invention to provide an ink jet recording apparatus capable of reliably supplying photo quality recording media one by one to a printing area.
[0005]
[Means for Solving the Problems]
In order to solve such a problem, in the first aspect of the invention, ink jet recording is performed in which the recording medium is transported from the recording medium accommodation area to the recording area, and ink droplets are selectively ejected from the recording head onto the recording medium. in the apparatus, and the solvent vapor of the droplets of the mist and discharged ink of the ejected ink to comprise means for guiding the recording medium accommodation area.
According to a second aspect of the present invention, the recording medium is transported from the recording medium containing area to the recording area, ink droplets are selectively ejected from the recording head onto the recording medium, and In an ink jet recording apparatus having a waste ink reservoir for storing ink discharged by a filling operation and an ink droplet discharge recovery operation, the inkjet recording apparatus includes means for guiding the solvent vapor of the ink in the waste ink reservoir to the recording medium storage area. did.
[0006]
[Action]
The discharge of the charge of the recording medium is promoted by the vapor of the ink solvent, and the electrostatic adsorption force is reduced to prevent double feeding.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Therefore, details of the present invention will be described below based on the illustrated embodiment.
FIG. 1 shows an embodiment of an ink jet recording apparatus according to the present invention. A recording apparatus main body 1 includes a loading port 2 in which a cassette 3 for storing a cut sheet is mounted at the center, and printing. A discharge port 4 for discharging the finished cut sheet is formed.
[0008]
FIG. 2 shows an embodiment of the printing mechanism of the recording apparatus. The recording head 5 reciprocates in the width direction of the recording medium P by a carriage 6 while receiving ink from an ink tank (not shown). It moves and ejects ink droplets corresponding to the print data onto the recording medium.
[0009]
Below the cassette 3 is disposed a waste ink reservoir 7 for storing ink discharged by the ink filling operation to the recording head 5 and the ink droplet ejection recovery operation.
Further, a duct 8 extending from the printing area to the lower part of the cassette 3 is provided, and this duct 8 is provided with an air supply means 9 for sending gas from the printing area to the lower part of the cassette 3.
[0010]
In this embodiment, when printing is started, the cut sheet accommodated in the cassette 3 is pulled out by the feed roller 10 and conveyed to the recording area and set at a predetermined position. Ink droplets are ejected from the recording head 5 corresponding to the print data, and printing is started.
[0011]
By the way, since the cassette 3 is positioned above the waste ink reservoir 7, the vapor of the ink solvent in the waste ink reservoir 7 flows due to the stay of the apparatus due to warm air, and the charge of the recording medium is discharged. In order to enhance the effect of discharge, it is desirable to form a through hole through which steam flows in the bottom surface of the cassette 3 or to conduct a conductive treatment.
[0012]
On the other hand, in a state where printing is started and ink droplets are ejected from the recording head 5, ink mist or vapor of the ink solvent volatilized from the ink droplets of the recording medium P passes through the duct 8 by the air supply means 9. Discharge of the electric charge fed into the cassette 3 and charged on the cut sheet is promoted.
[0013]
In the embodiment described above, the vapor of the ink solvent caused by the ink droplets ejected from the recording head 5 during printing is forcibly sent to the storage area of the recording medium by the air supply means. As described above, by disposing the recording head 5 above the scanning area, it is possible to feed the vapor generated by the ink droplets into the storage area of the recording medium without requiring an air supply unit.
Further, when the waste ink reservoir 7 cannot be disposed below the recording medium accommodation area due to the layout, the same effect can be obtained even if the vapor of the waste ink reservoir is guided to the recording medium accommodation area by a gas guide means such as a duct. Play.
[0014]
Further, in the above-described embodiment, the serial recording method for printing by reciprocating the inkjet recording head has been described as an example, but a line-type inkjet recording head having a recording area of about the printing width is used. It is clear that the same effect can be obtained even when applied to a recording apparatus.
[0015]
Furthermore, in the above-described embodiment, the recording apparatus using the on-demand type recording head that discharges ink droplets corresponding to the print data has been described as an example, but the ink droplets are generated regardless of the print data, In a continuous recording apparatus that moves to a recording medium by electrostatic force in response to print data, it is apparent that the same effect can be obtained by using an ink solvent of a gutter that receives unnecessary ink.
[0016]
【The invention's effect】
As described above, according to the present invention, the humidity of the area in which the recording medium is accommodated can be increased by actively utilizing the vapor of the ink solvent, and even a recording medium that is relatively susceptible to static electricity. , Double feeding can be prevented as much as possible.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of an ink jet recording apparatus of the present invention.
FIG. 2 is a cross-sectional view showing an embodiment of the ink jet recording apparatus of the present invention.
FIG. 3 is a cross-sectional view showing another embodiment of the ink jet recording apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Recording device main body 2 Cassette 3 Loading port 5 Recording head 6 Carriage 7 Waste ink reservoir 8 Duct 9 Air supply means P Recording medium

Claims (2)

記録媒体収容領域から記録媒体を記録領域に搬送し、記録ヘッドからインクの液滴を選択的に前記記録媒体に吐出させるインクジェット記録装置において、
前記吐出されたインクの液滴のミスト及び吐出されたインクの溶媒蒸気を前記記録媒体収容領域に導く手段を備えたインクジェット記録装置。
In an inkjet recording apparatus that transports a recording medium from a recording medium containing area to a recording area and selectively ejects ink droplets from a recording head onto the recording medium.
An ink jet recording apparatus provided with means for guiding a solvent vapor mist and discharged ink droplet of the ejected ink on the recording medium accommodation area.
記録媒体収容領域から記録媒体を記録領域に搬送し、記録ヘッドからインクの液滴を選択的に前記記録媒体に吐出し、また前記記録ヘッドへのインクの充填動作、及びインク滴吐出回復動作により排出されるインクを収容する廃インク溜を備えたインクジェット記録装置において、
前記廃インク溜のインクの溶媒蒸気を前記記録媒体収容領域に導く手段を備えたインクジェット記録装置。
The recording medium is transported from the recording medium containing area to the recording area, and ink droplets are selectively ejected from the recording head to the recording medium, and the recording head is filled with ink and the ink droplet ejection recovery operation. In an ink jet recording apparatus having a waste ink reservoir for containing discharged ink,
An ink jet recording apparatus comprising: means for guiding the solvent vapor of the ink in the waste ink reservoir to the recording medium accommodation region.
JP2002162889A 2002-06-04 2002-06-04 Inkjet recording device Expired - Fee Related JP4106970B2 (en)

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JP4106970B2 true JP4106970B2 (en) 2008-06-25

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