JPH08336984A - Ink jet printer - Google Patents
Ink jet printerInfo
- Publication number
- JPH08336984A JPH08336984A JP14316795A JP14316795A JPH08336984A JP H08336984 A JPH08336984 A JP H08336984A JP 14316795 A JP14316795 A JP 14316795A JP 14316795 A JP14316795 A JP 14316795A JP H08336984 A JPH08336984 A JP H08336984A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- ink
- nozzle
- hole
- wiping
- 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
Landscapes
- Ink Jet (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、インクジェットプリン
タに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet printer.
【０００２】[0002]
【従来の技術】従来、用紙の搬送方向に沿う多数のノズ
ルが形成されたインクジェットヘッドをキャリアに搭載
し、このキャリアをインクジェットヘッドとともに用紙
の幅方向に搬送する過程で、所望のノズルからインクを
飛翔させることにより印字するようにしたシリアルタイ
プのインクジェットプリンタがある。2. Description of the Related Art Conventionally, an ink jet head having a large number of nozzles formed along a paper conveyance direction is mounted on a carrier, and ink is ejected from a desired nozzle in the process of conveying the carrier together with the ink jet head in the paper width direction. There is a serial type ink jet printer that prints by flying.
【０００３】このようなインクジェットプリンタにおい
ては、ノズル内でのインクの固まりを主原因とする目詰
まりが生ずるため、印字領域外となるプラテンの端部付
近にメンテナンスステーションを設けている。このメン
テナンスステーションでは、キャッピングと称してノズ
ル内のインクの乾燥を防ぐためにノズルにキャップをす
ること、ワイピングと称してノズルに付着するインクの
固まりや異物を払拭すること、プライミングと称してノ
ズル内のインク滓をインクと共に吸引すること、等の処
置を行なっている。In such an ink jet printer, clogging occurs mainly due to the solidification of ink in the nozzles, and therefore a maintenance station is provided near the end of the platen outside the printing area. In this maintenance station, the nozzle is capped in order to prevent the ink inside the nozzle from being dried, called capping, the ink lumps and foreign substances adhering to the nozzle are wiped out, called wiping, and the nozzle inside the nozzle is called priming. It is taking measures such as sucking the ink slag together with the ink.
【０００４】[0004]
【発明が解決しようとする課題】高速印字の要求はイン
クジェットプリンタにも要求されているが、従来のシリ
アル型では高速化に限度がある。このため、数千にも及
ぶ多数のノズルが用紙の幅方向に沿って配列されたイン
クジェットヘッドを用いるライン型のインクジェットプ
リンタが開発されている。しかし、キャッピング、ワイ
ピング、プライミング等のメンテナンスの点で問題があ
る。The demand for high-speed printing is also demanded for ink jet printers, but the conventional serial type has a limit in speeding up. For this reason, a line-type inkjet printer has been developed which uses an inkjet head in which many thousands of nozzles are arranged along the width direction of the paper. However, there is a problem in terms of maintenance such as capping, wiping, and priming.
【０００５】すなわち、シリアル型の場合には、インク
ジェットヘッドをプラテンに沿って移動するキャリアの
移動長さを変えるだけでインクジェットヘッドをメンテ
ナンスポジションに移動させることができ、また、メン
テナンスポジションのスペースもそれほど広くする必要
がない。これに対して、ライン型の場合には、インクジ
ェットヘッドを移動させるキャリアがなく、インクジェ
ットヘッドをメンテナンスポジションに移動させるにし
ても別個に搬送機構を設けなければならない。また、イ
ンクジェットヘッドを移動させるにしても、インクジェ
ットヘッドの長さが非常に長くなるため、搬送機構の構
造が大掛かりとなり、しかも、メンテナンスポジション
のスペースを非常に大きくしなければならず、構造が大
型化するとともにコストが高くなる。That is, in the case of the serial type, the inkjet head can be moved to the maintenance position by simply changing the moving length of the carrier that moves the inkjet head along the platen, and the space for the maintenance position is not so large. It doesn't have to be wide. On the other hand, in the case of the line type, there is no carrier for moving the inkjet head, and even if the inkjet head is moved to the maintenance position, a separate transport mechanism must be provided. Further, even if the inkjet head is moved, the length of the inkjet head becomes very long, so the structure of the transport mechanism becomes large, and the space for the maintenance position must be made very large. Cost will increase as
【０００６】[0006]
【課題を解決するための手段】請求項１記載の発明は、
多数のノズルが用紙の搬送方向と直交する方向に配列さ
れたライン型のインクジェットヘッドと、前記ノズルの
配列方向に沿うスリット状のインク吸引孔が外周の一部
に軸方向に沿って形成されるとともに前記インク吸引孔
を負圧発生部に接続する中空孔が中心に形成された吸引
パイプと、少なくとも印台部と前記インク吸引孔に選択
的に連通されるスリット状の接続孔とが周方向に分割さ
れた外周面に形成されて前記吸引パイプの外周に回転自
在に嵌合された多機能パイプと、を備えている。According to the first aspect of the present invention,
A line type ink jet head in which a large number of nozzles are arranged in a direction orthogonal to the sheet conveying direction, and slit-shaped ink suction holes along the nozzle arrangement direction are formed in a part of the outer periphery along the axial direction. Along with the suction pipe having a hollow hole formed at the center for connecting the ink suction hole to the negative pressure generating portion, and at least the printing plate portion and the slit-shaped connection hole selectively communicating with the ink suction hole in the circumferential direction. A multifunctional pipe formed on the divided outer peripheral surface and rotatably fitted to the outer periphery of the suction pipe.
【０００７】請求項２記載の発明は、請求項１記載の発
明において、多機能パイプの周方向に分割された異なる
外周面のそれぞれに、分割されたノズルの配列領域に対
応する短い長さの接続孔を形成した。According to a second aspect of the invention, in the invention of the first aspect, each of the different outer peripheral surfaces divided in the circumferential direction of the multifunctional pipe has a short length corresponding to the array region of the divided nozzles. A connection hole was formed.
【０００８】請求項３記載の発明は、請求項１又は２記
載の発明において、多機能パイプの周方向に分割された
外周面にノズルを払拭する払拭部を形成した。According to a third aspect of the invention, in the invention according to the first or second aspect, a wiping portion for wiping the nozzle is formed on an outer peripheral surface of the multifunctional pipe divided in the circumferential direction.
【０００９】[0009]
【作用】請求項１記載の発明では、多機能パイプの回転
位置を選択し、印台部をノズルに対向させることにより
印字が可能となり、接続孔をノズルに対向させる負圧発
生部を駆動することにより、ノズル内のインクを多機能
パイプの接続孔と吸引パイプのインク吸引孔及び中空孔
を介して吸引するプライミングが可能となる。According to the first aspect of the present invention, printing can be performed by selecting the rotational position of the multi-function pipe and causing the printing plate portion to face the nozzle, and driving the negative pressure generating portion that makes the connection hole face the nozzle. As a result, it becomes possible to perform priming for sucking the ink in the nozzle through the connection hole of the multifunction pipe, the ink suction hole of the suction pipe, and the hollow hole.
【００１０】請求項２記載の発明では、多機能パイプの
回転位置を選択し、多機能パイプの所望の接続孔をノズ
ルに対向させることにより、全ノズルのうちの所望の配
列領域内のノズルを対象にプライミングが可能となる。According to the second aspect of the present invention, the rotational position of the multifunctional pipe is selected, and the desired connection hole of the multifunctional pipe is made to face the nozzle, so that the nozzles in the desired arrangement region among all the nozzles are selected. The target can be primed.
【００１１】請求項３記載の発明では、多機能パイプの
回転位置を選択して払拭部をノズルに対向させ、多機能
パイプを回転方向に振動させることにより、払拭部でノ
ズルを払拭するワイピングが可能となる。According to the third aspect of the present invention, the wiping unit wipes the nozzle by selecting the rotational position of the multifunctional pipe, causing the wiping unit to face the nozzle, and vibrating the multifunctional pipe in the rotational direction. It will be possible.
【００１２】[0012]
【実施例】本発明の一実施例を図面に基づいて説明す
る。図１に示すように、用紙Ｓの搬送方向の幅方向に沿
ってオンデマンド型のインクジェットヘッド１が固定的
に設けられている。このインクジェットヘッド１は、用
紙Ｓの搬送方向Ａと直交する方向（用紙Ｓの幅方向）に
沿って配列された多数のノズル（図示せず）を有する。
また、インクジェットヘッド１と平行な吸引パイプ２の
外周に多機能パイプ３が回転自在に嵌合されている。吸
引パイプ２は断面が円形で、この吸引パイプ２の外周の
一部にはインクジェットヘッド１のノズルの配列方向に
沿うスリット状のインク吸引孔４が軸方向に沿って形成
され、このインク吸引孔４に連通する中空孔５が中心に
形成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an on-demand type inkjet head 1 is fixedly provided along the width direction of the sheet S in the transport direction. The inkjet head 1 has a large number of nozzles (not shown) arranged along a direction (width direction of the paper S) orthogonal to the transport direction A of the paper S.
Further, a multifunctional pipe 3 is rotatably fitted on the outer circumference of a suction pipe 2 parallel to the inkjet head 1. The suction pipe 2 has a circular cross-section, and a slit-shaped ink suction hole 4 is formed along the axial direction along the arrangement direction of the nozzles of the inkjet head 1 at a part of the outer circumference of the suction pipe 2. A hollow hole 5 communicating with 4 is formed at the center.
【００１３】多機能パイプ３は外周面が周方向に六分割
された六角形の断面形状を有し、その異なる外周面
（辺）には、印台部６、インクジェットヘッド１のノズ
ルを閉塞する閉塞部７、ノズルを払拭する払拭部８、前
記インク吸引孔４に選択的に連通されるスリット状の接
続孔９Ｌ，９Ｃ，９Ｒが形成されている。接続孔９Ｌ，
９Ｃ，９Ｒ同士も多機能パイプ３の異なる外周面（辺）
に分散して放射状に配列され、それぞれ異なるノズルの
配列領域に対応する短い長さに定められている。本実施
例では、接続孔９Ｌはインクジェットヘッド１の左側の
略３分の１の領域に対応され、接続孔９Ｒはインクジェ
ットヘッド１の中央部の略３分の１の領域に対応され、
接続孔９Ｒはインクジェットヘッド１の右側の略３分の
１の領域に対応されている。また、隣接する接続孔９
Ｌ，９Ｃ，９Ｒの端部は、インクジェットヘッド１の分
割領域を互いに補うようにオーバーラップする長さに定
められている。前記閉塞部７は、ノズルを傷めず且つノ
ズルに密着可能な弾性材を貼付する等の手段により形成
され、前記払拭部８はブラシを貼付する等の手段により
形成されている。The multi-function pipe 3 has a hexagonal cross-sectional shape in which the outer peripheral surface is divided into six in the circumferential direction, and the different outer peripheral surfaces (sides) are closed by closing the print base 6 and the nozzles of the ink jet head 1. A portion 7, a wiping portion 8 for wiping the nozzle, and slit-shaped connection holes 9L, 9C, 9R selectively communicating with the ink suction hole 4 are formed. Connection hole 9L,
9C and 9R also have different outer peripheral surfaces (sides) of the multi-function pipe 3
Are arranged in a radial pattern and are set to have short lengths corresponding to different nozzle arrangement regions. In this embodiment, the connection hole 9L corresponds to the left third region of the inkjet head 1, and the connection hole 9R corresponds to the center third region of the inkjet head 1.
The connection hole 9R corresponds to an approximately one-third area on the right side of the inkjet head 1. In addition, the adjacent connection hole 9
The ends of L, 9C and 9R are set to have overlapping lengths so as to complement each other in the divided areas of the inkjet head 1. The blocking portion 7 is formed by means such as sticking an elastic material that does not damage the nozzle and can be adhered to the nozzle, and the wiping portion 8 is formed by means such as sticking a brush.
【００１４】図４に示すように、前記吸引パイプ２の両
端には、前記中空孔５に連通する接続管１０が形成さ
れ、これらの接続管１０に嵌合されたチューブ１１の先
端は廃インクケース（図示せず）の上面に接続されてい
る。この廃インクケースの上面は真空ポンプ等の負圧発
生部（図示せず）に接続されている。また、吸引パイプ
２の一端には多角形のボス１２が形成され、このボス１
２には正逆回転自在のステッピングモータ１３を保持す
る支持板１４の角孔１５が固定的に嵌合されている。そ
して、前記多機能パイプ３の一端に固定的に嵌合された
ギヤ１６に噛合されるギヤ１７がステッピングモータ１
３に直結されている。As shown in FIG. 4, connection pipes 10 communicating with the hollow holes 5 are formed at both ends of the suction pipe 2, and the ends of the tubes 11 fitted in these connection pipes 10 are made of waste ink. It is connected to the upper surface of a case (not shown). The upper surface of the waste ink case is connected to a negative pressure generating unit (not shown) such as a vacuum pump. Further, a polygonal boss 12 is formed at one end of the suction pipe 2, and the boss 1
A square hole 15 of a support plate 14 that holds a stepping motor 13 that can freely rotate in the forward and reverse directions is fixedly fitted in 2. The gear 17 meshed with the gear 16 fixedly fitted to one end of the multi-function pipe 3 is the stepping motor 1.
It is directly connected to 3.
【００１５】さらに、前記吸引パイプ２の両端の接続管
１０はそれぞれ支持アーム１８の一端に固定的に保持さ
れている。これらの支持アーム１８は、図２に示すよう
に、角棒１９により連結されているとともに、この角棒
１９の両端から突出する支点軸２０を介してフレーム
（図示せず）に回動自在に保持されている。さらに、一
方のアーム１８の他端は、図３に示すように、ソレノイ
ド２１のプランジャ２２に連結されている。すなわち、
ソレノイド２１を励磁させてプランジャ２２を上昇させ
たときに、角棒１９によって連結されている左右の支持
アーム１８を図３において支点軸２０を中心に反時計方
向に回動させることにより、前記多機能パイプ３を前記
インクジェットヘッド１の下方に退避させる構造であ
る。この場合、多機能パイプ３、吸引パイプ２、支持板
１４、ステッピングモータ１３は一つの組立体として一
体に変位する。Further, the connecting pipes 10 at both ends of the suction pipe 2 are fixedly held at one end of a supporting arm 18, respectively. As shown in FIG. 2, these support arms 18 are connected by a square bar 19, and are rotatably supported by a frame (not shown) via fulcrum shafts 20 projecting from both ends of the square bar 19. Is held. Further, the other end of the one arm 18 is connected to the plunger 22 of the solenoid 21, as shown in FIG. That is,
When the solenoid 21 is excited and the plunger 22 is raised, the left and right support arms 18 connected by the square rod 19 are rotated counterclockwise about the fulcrum shaft 20 in FIG. The structure is such that the functional pipe 3 is retracted below the inkjet head 1. In this case, the multi-function pipe 3, the suction pipe 2, the support plate 14, and the stepping motor 13 are integrally displaced as one assembly.
【００１６】このような構成において、ソレノイド２１
により多機能パイプ３等をインクジェットヘッド１の下
方に退避させ、ステッピングモータ１３を駆動すると、
その回転がギヤ１７及びギヤ１６を介して多機能パイプ
３に伝達される。すなわち、ステッピングモータ１３の
駆動パルス数に応じて多機能パイプ３の印台部６、閉塞
部７、払拭部８、接続孔９Ｌ，９Ｃ，９Ｌのうちの所望
の部分を上面に向け、ソレノイド２１への通電を遮断し
て多機能パイプ３等を上昇させることにより、多機能パ
イプ３の選択された部分がインクジェットヘッド１のノ
ズルに対向される。この場合、支持アーム１８が下降位
置から上昇位置まで回動するときに、多機能パイプ３は
支持アーム１８に対する相対位置は変らないが、インク
ジェットヘッド１に対する回転方向の位置が変化するの
で、その変化を見込んでステッピングモータ１３の回転
角度を決定する。In such a structure, the solenoid 21
When the stepping motor 13 is driven by retracting the multifunction pipe 3 and the like below the inkjet head 1 by
The rotation is transmitted to the multi-function pipe 3 via the gears 17 and 16. That is, according to the number of drive pulses of the stepping motor 13, a desired portion of the stamp pad portion 6, the closing portion 7, the wiping portion 8, and the connection holes 9L, 9C, 9L of the multifunctional pipe 3 is directed to the upper surface, and is directed to the solenoid 21. By cutting off the energization to raise the multifunctional pipe 3 and the like, the selected portion of the multifunctional pipe 3 faces the nozzle of the inkjet head 1. In this case, when the support arm 18 rotates from the lowered position to the raised position, the relative position of the multifunction pipe 3 with respect to the support arm 18 does not change, but the position in the rotational direction with respect to the inkjet head 1 changes, so that change. In consideration of this, the rotation angle of the stepping motor 13 is determined.
【００１７】図１（ａ）及び図３に示す状態は、多機能
パイプ３の印台部６をノズルに対向させ、両者間に用紙
Ｓを供給し、インクジェットヘッド１を駆動することに
より印字をする状態である。図１（ｂ）に示す状態は、
印字業務での印字中断時、或いは、不使用時に閉塞部７
をノズルに密着させてノズルのインクの乾燥、ノズルへ
の異物の付着を防止するキャッピング状態である。図１
（ｃ）に示す状態は、払拭部８をノズルに接触させ、ス
テッピングモータ１３を小刻みに往復回転させ、多機能
パイプ３を小刻みに回転方向に振動させることにより、
ノズルに付着するインクの固まりや異物を払拭するワイ
ピング状態である。図１（ｄ）に示す状態は、接続孔９
Ｌをノズルに密着させ、負圧発生部を駆動することによ
りノズルに詰まったインク滓を含むインクを、接続孔９
Ｌとインク吸引孔４と中空孔５とチューブ１１とを介し
て廃インクケースに吸引するプライミングの状態であ
る。In the state shown in FIGS. 1A and 3, printing is performed by driving the ink jet head 1 by feeding the paper S between the printing plate portion 6 of the multi-function pipe 3 and the nozzle. It is in a state. The state shown in FIG.
Blocking section 7 when printing is interrupted during printing or when it is not used
Is in a capping state in which the ink is dried and the foreign matter is prevented from adhering to the nozzle. FIG.
In the state shown in (c), the wiping portion 8 is brought into contact with the nozzle, the stepping motor 13 is reciprocally rotated in small steps, and the multi-function pipe 3 is vibrated in small directions in the rotational direction.
The wiping state is for wiping off ink lumps and foreign matter adhering to the nozzles. The state shown in FIG. 1D is the connection hole 9
By bringing L into close contact with the nozzle and driving the negative pressure generating portion, the ink containing the ink residue clogged in the nozzle is connected to the connection hole 9
It is a state of priming in which the ink is sucked into the waste ink case through L, the ink suction hole 4, the hollow hole 5, and the tube 11.
【００１８】このように、多機能パイプ３は印台部６に
よりプラテンとしての機能を有するだけでなく、回転位
置を選択することにより、ノズルのキャッピング、ワイ
ピング、プライミングを行なうことができる。これによ
り、長いライン型のインクジェットヘッド１をメンテナ
ンスのために移動させる必要がなく、印字ポジションと
メンテナンスポジションとを分ける必要がないため、構
造を簡略化するとともに小型化を図ることが可能であ
る。As described above, the multi-function pipe 3 not only has a function as a platen by the printing plate portion 6, but can also perform capping, wiping, and priming of the nozzle by selecting the rotational position. As a result, it is not necessary to move the long line type inkjet head 1 for maintenance, and it is not necessary to separate the printing position and the maintenance position, so that the structure can be simplified and the size can be reduced.
【００１９】また、インクジェットヘッド１は使用する
最大幅の用紙Ｓに対応する長さに定められ、そのノズル
の数は、Ａ４サイズの場合３００ＤＰＩで２５５２ノズ
ル、４００ＤＰＩで３４０２ノズルとなる。この数はシ
リアル型のインクジェットヘッドに比較すると２０倍強
となるため、全ノズルを使用しないサイズの用紙Ｓに印
字する場合においても、プライミングに際して全ノズル
からインクを吸うとインクが無駄になる。しかし、本実
施例のように、ノズルの配列領域に応じて接続孔９Ｌ，
９Ｃ，９Ｒを分散して多機能パイプ３に配設し、実際に
使用した領域のノズルに接続孔９Ｌ，９Ｃ，９Ｒの何れ
かを選択して対向させた状態でプライミングを行なうこ
とにより、不必要な部分のノズルからインクを吸うこと
がなく、これにより、インクの消費量を極めて少なくす
ることができる。Further, the ink jet head 1 is set to have a length corresponding to the paper S having the maximum width to be used, and the number of nozzles of the A4 size is 2552 nozzles at 300 DPI and 3402 nozzles at 400 DPI. Since this number is slightly more than 20 times that of a serial type inkjet head, even when printing is performed on the paper S of a size that does not use all the nozzles, if the ink is sucked from all the nozzles during priming, the ink will be wasted. However, as in the present embodiment, the connection holes 9L,
By disposing 9C and 9R in a distributed manner in the multifunctional pipe 3 and performing priming in a state in which any of the connection holes 9L, 9C, and 9R is selected and opposed to the nozzle in the actually used area, The ink is not sucked from the nozzles of the necessary portion, and thus the ink consumption can be extremely reduced.
【００２０】[0020]
【発明の効果】請求項１記載の発明は、ライン型のイン
クジェットヘッドのノズルの配列方向に沿うスリット状
のインク吸引孔とこのインク吸引孔を負圧発生部に接続
する中空孔とが形成された吸引パイプの外周に、少なく
とも印台部と前記インク吸引孔に選択的に連通されるス
リット状の接続孔とが周方向に分割された外周面に形成
された多機能パイプを回転自在に嵌合したので、多機能
パイプの回転位置を選択し、印台部をノズルに対向させ
ることにより、印字する状態を得ることができ、また、
接続孔をノズルに対向させて負圧発生部を駆動すること
により、ノズル内のインクを多機能パイプの接続孔と吸
引パイプのインク吸引孔及び中空孔とを介して吸引する
プライミングを行なう状態を得ることができる。したが
って、長いライン型のインクジェットヘッドをメンテナ
ンスのために移動させる必要がなく、印字ポジションと
プライミングポジションとを分ける必要がないため、構
造を簡略化するとともに小型化を図ることができる。According to the first aspect of the present invention, a slit-shaped ink suction hole along the nozzle arrangement direction of the line type ink jet head and a hollow hole connecting the ink suction hole to the negative pressure generating portion are formed. On the outer circumference of the suction pipe, at least a multi-functional pipe is rotatably fitted on the outer peripheral surface of which at least a printing plate portion and a slit-shaped connection hole that selectively communicates with the ink suction hole are circumferentially divided. Therefore, by selecting the rotation position of the multi-function pipe and making the printing plate section face the nozzle, it is possible to obtain a printing state.
By driving the negative pressure generating unit with the connection hole facing the nozzle, the ink in the nozzle is primed to be sucked through the connection hole of the multifunction pipe and the ink suction hole and hollow hole of the suction pipe. Obtainable. Therefore, it is not necessary to move the long line type inkjet head for maintenance, and it is not necessary to separate the printing position and the priming position, so that the structure can be simplified and the size can be reduced.
【００２１】請求項２記載の発明は、請求項１記載の発
明において、多機能パイプの周方向に分割された異なる
外周面のそれぞれに、分割されたノズルの配列領域に対
応する短い長さの接続孔を形成したので、多機能パイプ
の回転位置を選択し、多機能パイプの所望の接続孔をノ
ズルに対向させることにより、全ノズルのうちの所望の
配列領域内のノズルを対象にプライミングを行なうこと
ができる。したがって、インクの消費量を節減すること
ができる。According to a second aspect of the present invention, in the invention according to the first aspect, each of the different outer peripheral surfaces divided in the circumferential direction of the multifunctional pipe has a short length corresponding to the array region of the divided nozzles. Since the connection hole is formed, the rotation position of the multifunctional pipe is selected, and the desired connection hole of the multifunctional pipe is made to face the nozzle, thereby priming the nozzles in the desired arrangement region of all the nozzles. Can be done. Therefore, the amount of ink consumption can be reduced.
【００２２】請求項３記載の発明は、請求項１又は２記
載の発明において、多機能パイプの周方向に分割された
外周面にノズルを払拭する払拭部を形成したので、多機
能パイプの回転位置を選択して払拭部をノズルに対向さ
せ、多機能パイプを回転方向に振動させるだけの簡単な
構造により、払拭部でノズルを払拭するワイピングを行
なうことができる。According to a third aspect of the present invention, in the first or second aspect of the invention, since the wiping portion for wiping the nozzle is formed on the outer peripheral surface of the multi-functional pipe divided in the circumferential direction, the multi-functional pipe is rotated. Wiping for wiping the nozzle with the wiping unit can be performed by a simple structure in which the position is selected, the wiping unit is opposed to the nozzle, and the multifunction pipe is vibrated in the rotation direction.
【図１】本発明の一実施例を示すもので、（ａ）は一部
を断面にして印字を行なう状態を示す側面図、（ｂ）は
一部を断面にしてキャッピング状態を示す側面図、
（ｃ）は一部を断面にしてワイピング状態を示す側面
図、（ｄ）は一部を断面にしてプライミング状態を示す
側面図である。1A and 1B show an embodiment of the present invention, in which FIG. 1A is a side view showing a state in which printing is performed with a partial cross section, and FIG. 1B is a side view showing a capping state with a partial cross section. ,
(C) is a side view showing a wiping state with a part in section, and (d) is a side view showing a priming state with a part in section.
【図２】平面図である。FIG. 2 is a plan view.
【図３】側面図である。FIG. 3 is a side view.
【図４】分解斜視図である。FIG. 4 is an exploded perspective view.
１ インクジェットヘッド ２ 吸引パイプ ３ 多機能パイプ ４ インク吸引孔 ５ 中空孔 ６ 印台部 ８ 払拭部 ９Ｌ，９Ｃ，９Ｒ 接続孔 DESCRIPTION OF SYMBOLS 1 Inkjet head 2 Suction pipe 3 Multi-function pipe 4 Ink suction hole 5 Hollow hole 6 Stamp base part 8 Wiping part 9L, 9C, 9R Connection hole
Claims (3)
る方向に配列されたライン型のインクジェットヘッド
と、前記ノズルの配列方向に沿うスリット状のインク吸
引孔が外周の一部に軸方向に沿って形成されるとともに
前記インク吸引孔を負圧発生部に接続する中空孔が中心
に形成された吸引パイプと、少なくとも印台部と前記イ
ンク吸引孔に選択的に連通されるスリット状の接続孔と
が周方向に分割された外周面に形成されて前記吸引パイ
プの外周に回転自在に嵌合された多機能パイプと、を備
えたことを特徴とするインクジェットプリンタ。1. A line type ink jet head in which a large number of nozzles are arranged in a direction orthogonal to a sheet conveying direction, and a slit-shaped ink suction hole along the nozzle arrangement direction is axially provided in a part of the outer periphery. A suction pipe having a hollow hole formed in the center thereof for connecting the ink suction hole to the negative pressure generating portion, and a slit-shaped connection hole that selectively communicates with at least the printing plate portion and the ink suction hole. And a multifunctional pipe that is formed on the outer peripheral surface divided in the circumferential direction and is rotatably fitted to the outer periphery of the suction pipe.
る外周面のそれぞれに、分割されたノズルの配列領域に
対応する短い長さの接続孔を形成したことを特徴とする
請求項１記載のインクジェットプリンタ。2. The multi-function pipe is provided with a connection hole having a short length corresponding to each of the divided outer peripheral surfaces of the pipe in the circumferential direction, the connection hole having a short length corresponding to an arrangement region of the divided nozzles. Inkjet printer.
面にノズルを払拭する払拭部を形成したことを特徴とす
る請求項１又は２記載のインクジェットプリンタ。3. The inkjet printer according to claim 1, wherein a wiping portion for wiping the nozzle is formed on an outer peripheral surface of the multifunctional pipe divided in the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14316795A JPH08336984A (en) | 1995-06-09 | 1995-06-09 | Ink jet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14316795A JPH08336984A (en) | 1995-06-09 | 1995-06-09 | Ink jet printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08336984A true JPH08336984A (en) | 1996-12-24 |
Family
ID=15332482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14316795A Pending JPH08336984A (en) | 1995-06-09 | 1995-06-09 | Ink jet printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08336984A (en) |
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