JP7421515B2

JP7421515B2 - inkjet printer

Info

Publication number: JP7421515B2
Application number: JP2021080469A
Authority: JP
Inventors: 喜久男松場; 良介小林; 昭洋鈴木
Original assignee: Roland DG Corp
Current assignee: Roland DG Corp
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2024-01-26
Anticipated expiration: 2041-05-11
Also published as: JP2022174583A

Description

本発明は、インクジェットプリンタに関する。 The present invention relates to an inkjet printer.

従来から、インクジェット方式によって記録媒体に画像を印刷するインクジェットプリンタが知られている。この種のインクジェットプリンタは、例えば、記録媒体が載置されるプラテンと、プラテンに載置された記録媒体にインクを吐出するノズルを有するインクヘッドと、インクヘッドが搭載されたキャリッジとを備えている。キャリッジに搭載されるインクヘッドは、例えば、配置位置の変更が可能な金属製の板状部材に装着されており、寸法誤差や組付け誤差等を考慮してキャリッジに対するインクヘッドの位置を調整可能に構成されている。例えば、特許文献１には、印刷ヘッド（インクヘッド）が装着されるサブプレートの位置を調整するためのサブプレート位置調整機構を備えたプリンタが開示されている。 2. Description of the Related Art Inkjet printers that print images on recording media using an inkjet method have been known. This type of inkjet printer includes, for example, a platen on which a recording medium is placed, an ink head having a nozzle that discharges ink onto the recording medium placed on the platen, and a carriage on which the ink head is mounted. There is. The ink heads mounted on the carriage are mounted on a metal plate-like member whose position can be changed, for example, and the position of the ink heads relative to the carriage can be adjusted to account for dimensional errors, assembly errors, etc. It is composed of For example, Patent Document 1 discloses a printer including a sub-plate position adjustment mechanism for adjusting the position of a sub-plate on which a print head (ink head) is attached.

特許４７７９６６６号公報Patent No. 4779666

特許文献１に示す技術では、カム面を有する調整カムを回転させることによってインクヘッドが装着された調整プレートの位置を調整している。ここで、調整カムによるインクヘッドの位置調整は、ユーザーまたはサービスエンジニア（以下これらを作業者とする）によって手動で行われる。インクヘッドの位置調整は、例えば１０μｍ程度～１００μｍ程度の範囲で行われるため、どの程度回転させればどの程度位置が調整されるかの感覚をつかむのが困難である。さらに、目分量で調整カムを回転させてインクヘッドの位置を調整しているため位置調整の精度にばらつきが生じやすく、この結果、テストプリントを繰り返し行わなければならず作業者の負担が大きくなる虞がある。 In the technique disclosed in Patent Document 1, the position of an adjustment plate on which an ink head is attached is adjusted by rotating an adjustment cam having a cam surface. Here, the position adjustment of the ink head using the adjustment cam is manually performed by a user or a service engineer (hereinafter referred to as an operator). Since the position of the ink head is adjusted within a range of, for example, about 10 μm to about 100 μm, it is difficult to get a sense of how much the position will be adjusted by rotating the ink head. Furthermore, since the position of the ink head is adjusted by rotating the adjustment cam by eye, the accuracy of position adjustment tends to vary, and as a result, test prints have to be repeated, which increases the burden on the operator. There is a possibility.

本発明はかかる点に鑑みてなされたものであり、その目的は、キャリッジに対するインクヘッドの位置調整を精度よく行うことができるインクジェットプリンタを提供することである。 The present invention has been made in view of the above, and an object of the present invention is to provide an inkjet printer that can accurately adjust the position of an ink head with respect to a carriage.

本発明に係るインクジェットプリンタは、記録媒体が載置される載置台と、前記載置台より上方に配置され、主走査方向に移動可能なキャリッジと、前記キャリッジに搭載され、前記キャリッジに対する相対的な位置の変更が可能な板状部材と、前記板状部材に装着され、かつ、前記載置台に載置された前記記録媒体にインクを吐出するインクヘッドと、前記キャリッジに回転可能に設けられ、前記キャリッジに対する前記板状部材の相対的な位置を調整する位置調整部材と、を備えている。前記位置調整部材は、外周面に設けられ、かつ、前記板状部材に当接するカム面と、前記外周面よりも前記位置調整部材の回転中心側に位置する内面に形成され、かつ、放射状に延びる複数の突起と、を有し、前記キャリッジに対して回転することによって、前記カム面に当接する前記板状部材の位置を変更するように構成されている。前記キャリッジは、前記突起に係止する突状部を有している。前記位置調整部材を所定の角度だけ回転させたとき、前記突状部は前記突起を乗り越えるように構成されている。 An inkjet printer according to the present invention includes: a mounting table on which a recording medium is placed; a carriage arranged above the mounting table and movable in the main scanning direction; a plate-like member whose position can be changed; an ink head mounted on the plate-like member and discharging ink onto the recording medium placed on the mounting table; and rotatably provided on the carriage; and a position adjustment member that adjusts the relative position of the plate member with respect to the carriage. The position adjusting member is formed on a cam surface that is provided on an outer circumferential surface and comes into contact with the plate-like member, and on an inner surface that is located closer to the rotation center of the position adjusting member than the outer circumferential surface, and that extends radially. The plate member has a plurality of extending protrusions, and is configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage. The carriage has a protrusion that engages with the protrusion. When the position adjusting member is rotated by a predetermined angle, the protruding portion is configured to climb over the protrusion.

本発明のインクジェットプリンタによると、位置調整部材のカム面は板状部材に当接するため、位置調整部材が回転することによって、即ち、板状部材と当接するカム面の位置を変更させることによって、板状部材が移動する。このように、板状部材の位置が変更されるため、板状部材に装着されたインクヘッドのキャリッジに対する相対的な位置を調整することができる。ここで、位置調整部材の内面に形成された突起には、キャリッジに設けられた突状部が係止している。そして、位置調整部材を所定の角度だけ回転させると、突状部は突起を乗り越える。突状部が突起を乗り越えると、位置調整部材を把持している作業者の指先等にはクリック感が伝達される。このように、作業者は、クリック感を感じることによって、位置調整部材が所定の角度だけ回転したことを認識することができるため、クリック感に基づいてキャリッジに対するインクヘッドの位置調整を精度よく行うことができる。 According to the inkjet printer of the present invention, since the cam surface of the position adjustment member contacts the plate-like member, by rotating the position adjustment member, that is, by changing the position of the cam surface that contacts the plate-like member, The plate member moves. Since the position of the plate member is changed in this way, the relative position of the ink head attached to the plate member to the carriage can be adjusted. Here, a protrusion provided on the carriage is engaged with a protrusion formed on the inner surface of the position adjustment member. Then, when the position adjustment member is rotated by a predetermined angle, the protruding portion climbs over the protrusion. When the protruding portion passes over the protrusion, a click feeling is transmitted to the fingertips of the operator who is gripping the position adjustment member. In this way, the operator can recognize that the position adjustment member has rotated by a predetermined angle by feeling the click feeling, so the position of the ink head relative to the carriage can be adjusted accurately based on the click feeling. be able to.

本発明によれば、キャリッジに対するインクヘッドの位置調整を精度よく行うことができるインクジェットプリンタを提供することができる。 According to the present invention, it is possible to provide an inkjet printer that can accurately adjust the position of an ink head with respect to a carriage.

一実施形態に係るプリンタの正面図である。FIG. 1 is a front view of a printer according to an embodiment. 一実施形態に係るケースを取り外したインクヘッドユニットの斜視図である。FIG. 2 is a perspective view of an ink head unit with a case removed according to an embodiment. 一実施形態に係るケースおよびインクヘッドを取り外したインクヘッドユニットの平面図である。FIG. 2 is a plan view of an ink head unit from which a case and an ink head are removed according to an embodiment. 一実施形態に係る支持台の斜視図である。FIG. 2 is a perspective view of a support base according to one embodiment. 一実施形態に係る支持台に第１位置調整部材、第２位置調整部材、第１付勢部材および第２付勢部材が取り付けられた状態を示す斜視図である。It is a perspective view showing the state where a 1st position adjustment member, a 2nd position adjustment member, a 1st biasing member, and a 2nd biasing member are attached to a support base concerning one embodiment. 一実施形態に係る位置調整部材の斜視図である。It is a perspective view of the position adjustment member concerning one embodiment. 一実施形態に係る位置調整部材の斜視図である。It is a perspective view of the position adjustment member concerning one embodiment. 一実施形態に係る位置調整部材の平面図である。It is a top view of the position adjustment member concerning one embodiment. 一実施形態に係る位置調整部材のカム面のカム線図である。FIG. 3 is a cam line diagram of a cam surface of a position adjustment member according to an embodiment. 一実施形態に係る第１突状部が第１位置調整部材の突起に係止している状態を示す斜視図である。FIG. 7 is a perspective view showing a state in which the first protrusion according to one embodiment is engaged with the protrusion of the first position adjustment member. 一実施形態に係る第１縦壁に形成された開口を介して第１位置調整部材の凹溝に六角レンチでアクセスしている状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which a hexagonal wrench is accessing a groove of the first position adjustment member through an opening formed in a first vertical wall according to an embodiment. 一実施形態に係る第１位置調整部材および第２位置調整部材が初期位置に位置する状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which a first position adjustment member and a second position adjustment member according to an embodiment are located at initial positions.

以下、図面を参照しながら、本発明の実施形態に係るインクジェットプリンタ（以下単に「プリンタ」と称する）について説明する。なお、ここで説明される実施形態は、当然ながら特に本発明を限定することを意図したものではない。また、同じ作用を奏する部材・部位には同じ符号を付し、重複する説明は適宜省略または簡略化する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS An inkjet printer (hereinafter simply referred to as a "printer") according to an embodiment of the present invention will be described below with reference to the drawings. Note that the embodiments described here are, of course, not intended to particularly limit the present invention. In addition, the same reference numerals are given to members and parts that have the same function, and redundant explanations are omitted or simplified as appropriate.

図１は、本実施形態に係るプリンタ１０を示す正面図である。プリンタ１０は、記録媒体５に印刷を行う。記録媒体５は、例えば、長尺に形成され、ロール状に巻かれて用いられる。なお、記録媒体５は、ロール状に巻かれたものが所定の長さに切断されたシート状のものであってもよい。記録媒体５は、例えば、記録紙である。ただし、記録媒体５は、記録紙に限定されない。例えば、記録媒体５には、ポリ塩化ビニル（ＰＶＣ）、ポリエステルなどの樹脂材料から形成されたシート、台紙と台紙上に積層されかつ粘着剤が塗布された剥離紙とからなるシール材等が含まれる。 FIG. 1 is a front view showing a printer 10 according to this embodiment. The printer 10 prints on the recording medium 5. The recording medium 5 is, for example, formed into a long length and used by being wound into a roll. Note that the recording medium 5 may be in the form of a sheet that is wound into a roll and cut into a predetermined length. The recording medium 5 is, for example, recording paper. However, the recording medium 5 is not limited to recording paper. For example, the recording medium 5 includes a sheet made of a resin material such as polyvinyl chloride (PVC) or polyester, a sealing material made of a mount and a release paper laminated on the mount and coated with an adhesive. It will be done.

以下の説明では、左、右、上、下とは、プリンタ１０の正面にいる作業者から見た左、右、上、下をそれぞれ意味することとする。また、作業者がプリンタ１０の正面を向いているときにプリンタ１０の後部から作業者に向かう方向を前方、作業者からプリンタ１０の後部に向かう方向を後方とする。図面中の符号Ｆ、Ｒｒ、Ｌ、Ｒ、Ｕ、Ｄは、それぞれ前、後、左、右、上、下を表す。後述するキャリッジ２５（図２参照）は、左方および右方に移動可能に設けられている。プリンタ１０の後側を上流側と称し、プリンタ１０の前側を下流側としたとき、記録媒体５は、上流側から下流側に向けて搬送される。本実施形態では、キャリッジ２５の移動方向を主走査方向Ｙといい、記録媒体５の搬送方向を副走査方向Ｘという。ここでは、主走査方向Ｙは左右方向に対応し、副走査方向Ｘは前後方向に対応する。主走査方向Ｙと副走査方向Ｘとは直交している。ただし、主走査方向Ｙおよび副走査方向Ｘは特に限定される訳ではなく、プリンタ１０の形態等に応じて適宜に設定可能である。 In the following description, left, right, upper, and lower mean the left, right, upper, and lower, respectively, as viewed from the operator in front of the printer 10. Furthermore, when the operator is facing the front of the printer 10, the direction from the rear of the printer 10 toward the operator is defined as the front, and the direction from the operator toward the rear of the printer 10 is defined as the rear. The symbols F, Rr, L, R, U, and D in the drawings represent front, rear, left, right, top, and bottom, respectively. A carriage 25 (see FIG. 2), which will be described later, is provided so as to be movable leftward and rightward. When the rear side of the printer 10 is referred to as the upstream side and the front side of the printer 10 is referred to as the downstream side, the recording medium 5 is conveyed from the upstream side to the downstream side. In this embodiment, the direction in which the carriage 25 moves is referred to as a main scanning direction Y, and the direction in which the recording medium 5 is conveyed is referred to as a sub-scanning direction X. Here, the main scanning direction Y corresponds to the left-right direction, and the sub-scanning direction X corresponds to the front-back direction. The main scanning direction Y and the sub-scanning direction X are perpendicular to each other. However, the main scanning direction Y and the sub-scanning direction X are not particularly limited, and can be set as appropriate depending on the form of the printer 10 and the like.

図１に示すように、プリンタ１０は、プリンタ本体１０ａと、脚１１と、操作パネル１２と、記録媒体５が載置されるプラテン１６と、インクヘッドユニット２０と、キャリッジ移動機構７０と、媒体移動機構７５と、を備えている。プリンタ本体１０ａは、主走査方向Ｙに延びたケーシングを有する。脚１１は、プリンタ本体１０ａを支持するものであり、プリンタ本体１０ａの下面に設けられている。操作パネル１２は、例えばプリンタ本体１０ａの右側の前面に設けられている。ただし、操作パネル１２の位置は特に限定されない。操作パネル１２は、例えば、作業者が印刷に関する操作を行うものである。図示は省略するが、操作パネル１２には、例えば、解像度、インクの濃さなどの印刷に関する情報や、印刷中のプリンタ１０のステータスなどが表示される表示部、および、印刷に関する情報を入力するための入力部などが備えられている。 As shown in FIG. 1, the printer 10 includes a printer main body 10a, legs 11, an operation panel 12, a platen 16 on which a recording medium 5 is placed, an ink head unit 20, a carriage moving mechanism 70, and a medium A moving mechanism 75 is provided. The printer main body 10a has a casing extending in the main scanning direction Y. The legs 11 support the printer main body 10a, and are provided on the lower surface of the printer main body 10a. The operation panel 12 is provided, for example, on the front right side of the printer main body 10a. However, the position of the operation panel 12 is not particularly limited. The operation panel 12 is used by an operator to perform printing-related operations, for example. Although not shown, the operation panel 12 includes, for example, a display section that displays printing-related information such as resolution and ink density, the status of the printer 10 that is currently printing, and a section for inputting printing-related information. It is equipped with an input section for

プラテン１６は、記録媒体５へ印刷する際、記録媒体５を支持するものである。プラテン１６には、記録媒体５が載置される。記録媒体５への印刷は、プラテン１６上で行われる。図１に示すように、プラテン１６は主走査方向Ｙに延びている。プラテン１６は、プリンタ本体１０ａに支持されている。プラテンは、載置台の一例である。 The platen 16 supports the recording medium 5 when printing on the recording medium 5. The recording medium 5 is placed on the platen 16 . Printing on the recording medium 5 is performed on a platen 16. As shown in FIG. 1, the platen 16 extends in the main scanning direction Y. As shown in FIG. The platen 16 is supported by the printer main body 10a. A platen is an example of a mounting table.

図１に示すように、プリンタ１０は、主走査方向Ｙおよび上下方向に延びる中央壁１４を備えている。中央壁１４は、プリンタ本体１０ａに支持されている。中央壁１４は、プラテン１６の上方に配置されている。中央壁１４とプラテン１６との間には、記録媒体５が通過可能な間隙が形成されている。プリンタ１０は、ガイドレール１５を備えている。ガイドレール１５は、主走査方向Ｙに延びる。ガイドレール１５は、中央壁１４に設けられている。ガイドレール１５は、プラテン１６の上方に配置されている。 As shown in FIG. 1, the printer 10 includes a center wall 14 extending in the main scanning direction Y and in the vertical direction. The center wall 14 is supported by the printer main body 10a. Center wall 14 is located above platen 16. A gap is formed between the center wall 14 and the platen 16, through which the recording medium 5 can pass. The printer 10 includes a guide rail 15. The guide rail 15 extends in the main scanning direction Y. The guide rail 15 is provided on the central wall 14. The guide rail 15 is arranged above the platen 16.

キャリッジ移動機構７０は、プラテン１６に載置された記録媒体５に対してインクヘッドユニット２０の後述するキャリッジ２５（図２参照）を相対的に主走査方向Ｙに移動させる機構である。キャリッジ移動機構７０は、キャリッジ２５を主走査方向Ｙに移動させる。なお、キャリッジ移動機構７０の構成は特に限定されない。図１に示すように、キャリッジ移動機構７０は、第１プーリ７１と、第２プーリ７２と、無端状のベルト７３と、キャリッジモータ７４とを備えている。第１プーリ７１は、ガイドレール１５の左端側に設けられている。第２プーリ７２は、ガイドレール１５の右端側に設けられている。ベルト７３は、第１プーリ７１と第２プーリ７２とに巻き掛けられている。ベルト７３は、キャリッジ２５の背面上部に固定されている。第２プーリ７２には、キャリッジモータ７４が接続されている。ただし、キャリッジモータ７４は、第１プーリ７１に接続されていてもよい。ここでは、キャリッジモータ７４が駆動して、第２プーリ７２が回転することで、第１プーリ７１と第２プーリ７２との間においてベルト７３が走行する。これにより、キャリッジ２５は主走査方向Ｙに移動する。即ち、キャリッジモータ７４は、キャリッジ２５を主走査方向Ｙに移動させる。 The carriage moving mechanism 70 is a mechanism that moves a carriage 25 (see FIG. 2) of the ink head unit 20, which will be described later, in the main scanning direction Y relative to the recording medium 5 placed on the platen 16. The carriage moving mechanism 70 moves the carriage 25 in the main scanning direction Y. Note that the configuration of the carriage moving mechanism 70 is not particularly limited. As shown in FIG. 1, the carriage moving mechanism 70 includes a first pulley 71, a second pulley 72, an endless belt 73, and a carriage motor 74. The first pulley 71 is provided on the left end side of the guide rail 15. The second pulley 72 is provided on the right end side of the guide rail 15. The belt 73 is wound around the first pulley 71 and the second pulley 72. The belt 73 is fixed to the upper back surface of the carriage 25. A carriage motor 74 is connected to the second pulley 72 . However, the carriage motor 74 may be connected to the first pulley 71. Here, the belt 73 runs between the first pulley 71 and the second pulley 72 as the carriage motor 74 is driven and the second pulley 72 rotates. As a result, the carriage 25 moves in the main scanning direction Y. That is, the carriage motor 74 moves the carriage 25 in the main scanning direction Y.

媒体移動機構７５は、プラテン１６に載置された記録媒体５をキャリッジ２５に対して副走査方向Ｘに相対的に移動させるものである。媒体移動機構７５は、プラテン１６に載置された記録媒体５を副走査方向Ｘに移動させる。図１に示すように、媒体移動機構７５は、グリットローラ７６と、ピンチローラ７７と、保持シャフト７８と、図示しないフィードモータと、を備えている。 The medium moving mechanism 75 moves the recording medium 5 placed on the platen 16 relative to the carriage 25 in the sub-scanning direction X. The medium moving mechanism 75 moves the recording medium 5 placed on the platen 16 in the sub-scanning direction X. As shown in FIG. 1, the medium moving mechanism 75 includes a grit roller 76, a pinch roller 77, a holding shaft 78, and a feed motor (not shown).

図１に示すように、グリットローラ７６は、プラテン１６に設けられている。グリットローラ７６は、グリットローラ７６の上部が外部に露出するようにプラテン１６に埋設されている。グリットローラ７６は、主走査方向Ｙに並列している。グリットローラ７６は、ピンチローラ７７の下方に配置されている。グリットローラ７６は、ピンチローラ７７との間に記録媒体５を挟み込む。 As shown in FIG. 1, the grit roller 76 is provided on the platen 16. The grit roller 76 is embedded in the platen 16 so that the upper part of the grit roller 76 is exposed to the outside. The grit rollers 76 are arranged in parallel in the main scanning direction Y. The grit roller 76 is arranged below the pinch roller 77. The grit roller 76 pinches the recording medium 5 between it and the pinch roller 77 .

図１に示すように、ピンチローラ７７は、プラテン１６より上方に配置されている。ピンチローラ７７は、ガイドレール１５より下方に配置されている。ピンチローラ７７は、グリットローラ７６と対向する位置に配置されている。ピンチローラ７７は、プラテン１６に載置された記録媒体５を上から押さえる。 As shown in FIG. 1, the pinch roller 77 is arranged above the platen 16. The pinch roller 77 is arranged below the guide rail 15. The pinch roller 77 is arranged at a position facing the grit roller 76. The pinch roller 77 presses down the recording medium 5 placed on the platen 16 from above.

図１に示すように、保持シャフト７８は、主走査方向Ｙに延びる。保持シャフト７８は、ピンチローラ７７を保持する。保持シャフト７８が軸周りに回転することによって、ピンチローラ７７をグリットローラ７６に接近させたり、グリットローラ７６から離反させたりすることができる。保持シャフト７８は、プリンタ本体１０ａに回転可能に支持されている。フィードモータ（図示せず）は、グリットローラ７６に接続されている。グリットローラ７６とピンチローラ７７との間に記録媒体５が挟まれた状態で、フィードモータが駆動してグリットローラ７６が回転すると、記録媒体５は副走査方向Ｘに搬送される。 As shown in FIG. 1, the holding shaft 78 extends in the main scanning direction Y. The holding shaft 78 holds the pinch roller 77. By rotating the holding shaft 78 around the axis, the pinch roller 77 can be moved closer to or separated from the grit roller 76 . The holding shaft 78 is rotatably supported by the printer main body 10a. A feed motor (not shown) is connected to grit roller 76. When the feed motor is driven and the grit roller 76 rotates with the recording medium 5 sandwiched between the grit roller 76 and the pinch roller 77, the recording medium 5 is conveyed in the sub-scanning direction X.

図２に示すように、インクヘッドユニット２０は、ケース２２（図１参照）と、キャリッジ２５と、複数のインクヘッド２３と、を備えている。インクヘッド２３は、プラテン１６に載置された記録媒体５にインクを吐出する。インクヘッド２３は、記録媒体５に所定の画像を印刷する。インクヘッド２３は、インクを一時的に収容するインク収容部材２４と、インク収容部材２４に連通しかつ副走査方向Ｘに並ぶ複数のノズルから構成されたノズル列（図示せず）と、を有する。インク収容部材２４は、チューブ等を介して図示しないインクカートリッジに接続されている。本実施形態では、インクヘッド２３は、４つのインク収容部材２４を有し、インク収容部材２４には、例えば、シアンインク、マゼンタインク、イエローインクおよびブラックインクがそれぞれ収容される。ただし、インク収容部材２４の個数は、４つに限定されない。インクヘッド２３は、キャリッジ２５に搭載されている。より詳細には、インクヘッド２３は、キャリッジ２５に搭載された後述する板状部材４０に装着されている。インクヘッド２３は、キャリッジ２５の移動に伴って、主走査方向Ｙに移動可能に構成されている。インクヘッド２３は、第１インクヘッド２３Ａと、第２インクヘッド２３Ｂと、を含む。第１インクヘッド２３Ａおよび第２インクヘッド２３Ｂは、主走査方向Ｙに並ぶ。第２インクヘッド２３Ｂは、第１インクヘッド２３Ａより右方に配置されている。第２インクヘッド２３Ｂは、第１インクヘッド２３Ａに対して副走査方向Ｘに偏倚している。第２インクヘッド２３Ｂの前端は、第１インクヘッド２３Ａの前端より前方に位置する。本実施形態では、２つのインクヘッド２３がキャリッジ２５に搭載されている。ただし、インクヘッド２３の個数は２つに限定されない。なお、図２および図３では、ケース２２の図示を省略している。 As shown in FIG. 2, the ink head unit 20 includes a case 22 (see FIG. 1), a carriage 25, and a plurality of ink heads 23. The ink head 23 discharges ink onto the recording medium 5 placed on the platen 16. The ink head 23 prints a predetermined image on the recording medium 5. The ink head 23 includes an ink storage member 24 that temporarily stores ink, and a nozzle row (not shown) that communicates with the ink storage member 24 and is composed of a plurality of nozzles lined up in the sub-scanning direction X. . The ink storage member 24 is connected to an ink cartridge (not shown) via a tube or the like. In this embodiment, the ink head 23 has four ink storage members 24, and each of the ink storage members 24 stores, for example, cyan ink, magenta ink, yellow ink, and black ink. However, the number of ink storage members 24 is not limited to four. The ink head 23 is mounted on a carriage 25. More specifically, the ink head 23 is attached to a plate member 40, which will be described later, and which is mounted on the carriage 25. The ink head 23 is configured to be movable in the main scanning direction Y as the carriage 25 moves. The ink head 23 includes a first ink head 23A and a second ink head 23B. The first ink head 23A and the second ink head 23B are lined up in the main scanning direction Y. The second ink head 23B is placed to the right of the first ink head 23A. The second ink head 23B is offset in the sub-scanning direction X with respect to the first ink head 23A. The front end of the second ink head 23B is located forward of the front end of the first ink head 23A. In this embodiment, two ink heads 23 are mounted on the carriage 25. However, the number of ink heads 23 is not limited to two. Note that illustration of the case 22 is omitted in FIGS. 2 and 3.

キャリッジ２５は、プラテン１６より上方に配置されている。キャリッジ２５は、ガイドレール１５に係合している。キャリッジ２５は、ガイドレール１５に沿って主走査方向Ｙに移動可能に構成されている。キャリッジ２５は、ベース部材３０と、ベース部材３０を支持する支持部材２６と、を含む。支持部材２６は、ベース部材３０の後部に設けられかつ上下方向に延びる第１支持部材２７と、ベース部材３０の左側部に設けられかつ上下方向に延びる第２支持部材２８と、ベース部材３０の右側部に設けられかつ上下方向に延びる第３支持部材２９と、を含む。第２支持部材２８および第３支持部材２９は、第１支持部材２７に連結されている。第１支持部材２７、第２支持部材２８および第３支持部材２９は、ベース部材３０を支持する。 The carriage 25 is arranged above the platen 16. The carriage 25 is engaged with the guide rail 15. The carriage 25 is configured to be movable in the main scanning direction Y along the guide rail 15. Carriage 25 includes a base member 30 and a support member 26 that supports base member 30. The support member 26 includes a first support member 27 provided at the rear of the base member 30 and extending in the vertical direction, a second support member 28 provided on the left side of the base member 30 and extended in the vertical direction, and a second support member 28 provided at the left side of the base member 30 and extending in the vertical direction. A third support member 29 is provided on the right side and extends in the vertical direction. The second support member 28 and the third support member 29 are connected to the first support member 27. The first support member 27 , the second support member 28 , and the third support member 29 support the base member 30 .

図２に示すように、ベース部材３０は、板状に形成されたベース壁３２と、ベース壁３２の前部（即ち副走査方向Ｘの下流側の端部）から上方に延びる第１縦壁３４と、ベース壁３２の後部（即ち副走査方向Ｘの上流側の端部）から上方に延びる第２縦壁３６と、ベース壁３２の左部から上方に延びる第３縦壁３７と、ベース壁３２の右部から上方に延びる第４縦壁３８と、後述する板状部材４０が装着される支持台８０と、を有する。図３に示すように、ベース壁３２は、矩形状に形成されている。ベース壁３２には、開口３２Ｈが形成されている。ここでは、２つの開口３２Ｈが形成されている。ベース壁３２には後述する板状部材４０が配置される。図２に示すように、第１縦壁３４には、開口３４Ｈが形成されている。第３縦壁３７は、第２支持部材２８に連結されている。第４縦壁３８は、第３支持部材２９に連結されている。第１縦壁３４は、縦壁の一例である。 As shown in FIG. 2, the base member 30 includes a base wall 32 formed in a plate shape, and a first vertical wall extending upward from the front part of the base wall 32 (i.e., the downstream end in the sub-scanning direction X). 34, a second vertical wall 36 extending upward from the rear part of the base wall 32 (i.e., the upstream end in the sub-scanning direction X), a third vertical wall 37 extending upward from the left side of the base wall 32, and a base It has a fourth vertical wall 38 extending upward from the right side of the wall 32, and a support base 80 on which a plate member 40, which will be described later, is mounted. As shown in FIG. 3, the base wall 32 is formed in a rectangular shape. An opening 32H is formed in the base wall 32. Here, two openings 32H are formed. A plate member 40, which will be described later, is arranged on the base wall 32. As shown in FIG. 2, an opening 34H is formed in the first vertical wall 34. As shown in FIG. The third vertical wall 37 is connected to the second support member 28. The fourth vertical wall 38 is connected to the third support member 29. The first vertical wall 34 is an example of a vertical wall.

支持台８０は、ベース壁３２の下面に取り付けられる。支持台８０は、例えば、樹脂材料から形成されている。図４に示すように、支持台８０は、枠状に形成されている。支持台８０は、左右方向に延びる第１部分８１と、第１部分の左部から後方に延びる第２部分８２と、第１部分の右部から後方に延びかつ第２部分８２と対向する第３部分８３と、左右方向に延びかつ第２部分８２の後部および第３部分８３の後部に接続する第４部分８４とを含む。支持台８０には、開口８０Ｈが形成されている。開口８０Ｈは、第１部分８１、第２部分８２、第３部分８３および第４部分８４によって囲まれて形成されている。開口８０Ｈは、ベース壁３２の開口３２Ｈ（図３参照）と重なる。 The support stand 80 is attached to the lower surface of the base wall 32. The support stand 80 is made of, for example, a resin material. As shown in FIG. 4, the support stand 80 is formed into a frame shape. The support stand 80 includes a first part 81 extending in the left-right direction, a second part 82 extending rearward from the left part of the first part, and a second part 82 extending rearward from the right part of the first part and facing the second part 82. The fourth portion 84 extends in the left-right direction and connects to the rear part of the second part 82 and the rear part of the third part 83. An opening 80H is formed in the support base 80. The opening 80H is surrounded by a first portion 81, a second portion 82, a third portion 83, and a fourth portion 84. The opening 80H overlaps with the opening 32H in the base wall 32 (see FIG. 3).

図４および図５に示すように、支持台８０の第１部分８１には、後述する第１位置調整部材５１Ａが取り付けられる第１軸８５Ａと、後述する第２位置調整部材５１Ｂが第２軸８５Ｂと、第１位置調整部材５１Ａの後述する突起５２Ｃ（図７参照）に係止する第１突状部８６Ａと、第２位置調整部材５１Ｂの突起５２Ｃに係止する第２突状部８６Ｂと、後述する第２ねじりコイルばね９５Ｂを支持する第２支持軸８７Ｂと、第２ねじりコイルばね９５Ｂの一端および他端がそれぞれ係止する第２係止部８８Ｂと、が設けられている。支持台８０の第４部分８４には、後述する第１ねじりコイルばね９５Ａを支持する第１支持軸８７Ａと、第１ねじりコイルばね９５Ａの一端および他端がそれぞれ係止する第１係止部８８Ａと、後述する板状部材４０に挿入される回転軸８９と、が設けられている。第１軸８５Ａおよび第２軸８５Ｂは、上下方向に延びる。図３に示すように、第１軸８５Ａは、第２軸８５Ｂより前方かつ右方に配置されている。第２支持軸８７Ｂは、第１軸８５Ａより後方かつ右方に配置されている。回転軸８９は、第１支持軸８７Ａより前方かつ右方に配置されている。図４に示すように、第１突状部８６Ａは、上下方向に弾性変形可能な第１アーム部８６Ｃを介して第１部分８１に設けられている。第２突状部８６Ｂは、上下方向に弾性変形可能な第２アーム部８６Ｄを介して第１部分８１に設けられている。第１突状部８６Ａは、第１位置調整部材５１Ａが第１軸８５Ａに取り付けられた状態で、第１位置調整部材５１Ａの底壁５２（図７参照）の下方に配置される。第２突状部８６Ｂは、第２位置調整部材５１Ｂが第２軸８５Ｂに取り付けられた状態で、第２位置調整部材５１Ｂの底壁５２の下方に配置される。第１軸８５Ａ、第２軸８５Ｂ、第１突状部８６Ａ、第２突状部８６Ｂ、第１支持軸８７Ａ、第２支持軸８７Ｂ、第１係止部８８Ａ、第２係止部８８Ｂおよび回転軸８９は、支持台８０がベース壁３２に取り付けられたとき、ベース壁３２よりも上方に位置する。以下、第１突状部８６Ａおよび第２突状部８６Ｂをまとめて突状部８６と称することがある。 As shown in FIGS. 4 and 5, the first portion 81 of the support base 80 has a first shaft 85A to which a first position adjustment member 51A (described later) is attached, and a second shaft 85A to which a second position adjustment member 51B (described later) is attached. 85B, a first protrusion 86A that engages with a protrusion 52C (see FIG. 7) described below of the first position adjustment member 51A, and a second protrusion 86B that engages a protrusion 52C of the second position adjustment member 51B. A second support shaft 87B that supports a second torsion coil spring 95B, which will be described later, and a second locking portion 88B that locks one end and the other end of the second torsion coil spring 95B, respectively, are provided. The fourth portion 84 of the support base 80 includes a first support shaft 87A that supports a first torsion coil spring 95A, which will be described later, and a first locking portion to which one end and the other end of the first torsion coil spring 95A are respectively locked. 88A, and a rotating shaft 89 inserted into a plate-like member 40, which will be described later. The first shaft 85A and the second shaft 85B extend in the vertical direction. As shown in FIG. 3, the first shaft 85A is located forward and to the right of the second shaft 85B. The second support shaft 87B is arranged rearward and to the right of the first shaft 85A. The rotation shaft 89 is arranged forward and to the right of the first support shaft 87A. As shown in FIG. 4, the first projecting portion 86A is provided on the first portion 81 via a first arm portion 86C that is elastically deformable in the vertical direction. The second projecting portion 86B is provided on the first portion 81 via a second arm portion 86D that is elastically deformable in the vertical direction. The first protrusion 86A is arranged below the bottom wall 52 (see FIG. 7) of the first position adjustment member 51A with the first position adjustment member 51A attached to the first shaft 85A. The second protrusion 86B is arranged below the bottom wall 52 of the second position adjustment member 51B with the second position adjustment member 51B attached to the second shaft 85B. The first shaft 85A, the second shaft 85B, the first protrusion 86A, the second protrusion 86B, the first support shaft 87A, the second support shaft 87B, the first locking portion 88A, the second locking portion 88B, and The rotation shaft 89 is located above the base wall 32 when the support stand 80 is attached to the base wall 32. Hereinafter, the first protrusion 86A and the second protrusion 86B may be collectively referred to as the protrusion 86.

図３に示すように、インクヘッドユニット２０は、キャリッジ２５に対する相対的な位置の変更が可能な板状部材４０を備えている。板状部材４０には、インクヘッド２３が装着される。板状部材４０は、キャリッジ２５に搭載されている。より詳細には、板状部材４０は、支持台８０に載置された状態でキャリッジ２５のベース壁３２に固定されている。板状部材４０は、締結部材９０によってキャリッジ２５に固定されている。板状部材４０には、支持台８０の回転軸８９が挿入される挿入孔４０Ａが形成されている。挿入孔４０Ａは、前後方向に延びる長孔である。板状部材４０は、回転軸８９を中心に回転可能に設けられている。板状部材４０は、回転軸８９を中心にして前後方向（即ち副走査方向Ｘ）に移動可能に設けられている。板状部材４０には、平面視でベース壁３２の開口３２Ｈおよび支持台８０の開口８０Ｈと重なる開口４０Ｈが形成されている。板状部材４０に装着されるインクヘッド２３は、開口３２Ｈ、開口８０Ｈおよび開口４０Ｈ内に位置し、ノズル（図示せず）は支持台８０から外部に露出する。板状部材４０は、後述する第１位置調整部材５１Ａと当接する第１当接部４８Ａと、第２位置調整部材５１Ｂと当接する第２当接部４８Ｂと、後述する第１ねじりコイルばね９５Ａと当接する第３当接部４８Ｃと、第２ねじりコイルばね９５Ｂと当接する第４当接部４８Ｄと、を有する。 As shown in FIG. 3, the ink head unit 20 includes a plate member 40 whose position relative to the carriage 25 can be changed. The ink head 23 is attached to the plate member 40 . The plate member 40 is mounted on the carriage 25. More specifically, the plate member 40 is fixed to the base wall 32 of the carriage 25 while being placed on a support stand 80 . The plate member 40 is fixed to the carriage 25 by a fastening member 90. The plate member 40 is formed with an insertion hole 40A into which the rotating shaft 89 of the support stand 80 is inserted. The insertion hole 40A is a long hole extending in the front-rear direction. The plate member 40 is rotatably provided around a rotation shaft 89. The plate-shaped member 40 is provided so as to be movable in the front-rear direction (that is, the sub-scanning direction X) about the rotating shaft 89. The plate member 40 is formed with an opening 40H that overlaps the opening 32H of the base wall 32 and the opening 80H of the support base 80 in plan view. The ink heads 23 mounted on the plate member 40 are located within the openings 32H, 80H, and 40H, and the nozzles (not shown) are exposed to the outside from the support base 80. The plate member 40 includes a first contact portion 48A that contacts a first position adjustment member 51A, which will be described later, a second contact portion 48B, which contacts a second position adjustment member 51B, and a first torsion coil spring 95A, which will be described later. It has a third contact portion 48C that comes into contact with the second torsion coil spring 95B, and a fourth contact portion 48D that comes into contact with the second torsion coil spring 95B.

図３に示すように、板状部材４０は、第１インクヘッド２３Ａ（図２参照）が装着される第１板状部材４１Ａと、第２インクヘッド２３Ｂ（図２参照）が装着される第２板状部材４１Ｂとを含む。第１板状部材４１Ａと第２板状部材４１Ｂとは同じ形状を有する。第１板状部材４１Ａおよび第２板状部材４１Ｂは、主走査方向Ｙに並ぶ。第２板状部材４１Ｂは、第１板状部材４１Ａより右方に配置されている。第２板状部材４１Ｂは、第１板状部材４１Ａに対して副走査方向Ｘに偏倚している。第２板状部材４１Ｂの前端は、第１板状部材４１Ａの前端より前方に位置する。第１板状部材４１Ａをキャリッジ２５に固定する第１締結部材９１Ａと、第２板状部材４１Ｂをキャリッジ２５に固定する第２締結部材９１Ｂとは、主走査方向Ｙに関して少なくとも一部が重なるように配置されている。本実施形態では、第１締結部材９１Ａと第２締結部材９１Ｂとは、主走査方向Ｙに関して距離Ｌ１だけ重なっている。なお、本実施形態では、第１板状部材４１Ａの前後方向の位置は予め定められており、第１板状部材４１Ａは、前後方向には移動しない。 As shown in FIG. 3, the plate member 40 includes a first plate member 41A to which the first ink head 23A (see FIG. 2) is attached, and a first plate member 41A to which the second ink head 23B (see FIG. 2) is attached. 2 plate-like members 41B. The first plate member 41A and the second plate member 41B have the same shape. The first plate member 41A and the second plate member 41B are lined up in the main scanning direction Y. The second plate member 41B is disposed to the right of the first plate member 41A. The second plate member 41B is biased in the sub-scanning direction X with respect to the first plate member 41A. The front end of the second plate-like member 41B is located forward of the front end of the first plate-like member 41A. The first fastening member 91A that fixes the first plate-like member 41A to the carriage 25 and the second fastening member 91B that fixes the second plate-like member 41B to the carriage 25 are arranged so that at least a part thereof overlaps in the main scanning direction Y. It is located in In this embodiment, the first fastening member 91A and the second fastening member 91B overlap by a distance L1 in the main scanning direction Y. In addition, in this embodiment, the position of the first plate-like member 41A in the front-rear direction is determined in advance, and the first plate-like member 41A does not move in the front-rear direction.

図３に示すように、インクヘッドユニット２０は、板状部材４０を副走査方向Ｘに付勢する第１ねじりコイルばね９５Ａと、板状部材４０を主走査方向Ｙに付勢する第２ねじりコイルばね９５Ｂと、を備えている。第１ねじりコイルばね９５Ａは、板状部材４０の第３当接部４８Ｃに当接し、板状部材４０を前方に向けて付勢する。第２ねじりコイルばね９５Ｂは、板状部材４０の第４当接部４８Ｄに当接し、板状部材４０を左方に向けて付勢する。副走査方向Ｘに関して、第１ねじりコイルばね９５Ａ、板状部材４０および第１位置調整部材５１Ａの順に並ぶ。即ち、板状部材４０は、第１ねじりコイルばね９５Ａと第１位置調整部材５１Ａとの間に位置する。板状部材４０は、第１ねじりコイルばね９５Ａと第１位置調整部材５１Ａとに挟持されている。主走査方向Ｙに関して、第２ねじりコイルばね９５Ｂ、板状部材４０および第２位置調整部材５１Ｂの順に並ぶ。即ち、板状部材４０は、第２ねじりコイルばね９５Ｂと第２位置調整部材５１Ｂとの間に位置する。板状部材４０は、第２ねじりコイルばね９５Ｂと第２位置調整部材５１Ｂとに挟持されている。なお、第１板状部材４１Ａに関しては、第１ねじりコイルばね９５Ａは設けられていない。第１ねじりコイルばね９５Ａは、第１付勢部材の一例である。第２ねじりコイルばね９５Ｂは、第２付勢部材の一例である。 As shown in FIG. 3, the ink head unit 20 includes a first torsion coil spring 95A that biases the plate member 40 in the sub-scanning direction A coil spring 95B is provided. The first torsion coil spring 95A contacts the third contact portion 48C of the plate member 40 and biases the plate member 40 forward. The second torsion coil spring 95B contacts the fourth contact portion 48D of the plate-like member 40 and biases the plate-like member 40 toward the left. Regarding the sub-scanning direction X, the first torsion coil spring 95A, the plate member 40, and the first position adjustment member 51A are arranged in this order. That is, the plate member 40 is located between the first torsion coil spring 95A and the first position adjustment member 51A. The plate member 40 is held between the first torsion coil spring 95A and the first position adjustment member 51A. In the main scanning direction Y, the second torsion coil spring 95B, the plate member 40, and the second position adjustment member 51B are arranged in this order. That is, the plate member 40 is located between the second torsion coil spring 95B and the second position adjustment member 51B. The plate member 40 is held between the second torsion coil spring 95B and the second position adjustment member 51B. Note that the first plate member 41A is not provided with the first torsion coil spring 95A. The first torsion coil spring 95A is an example of a first biasing member. The second torsion coil spring 95B is an example of a second biasing member.

図３に示すように、インクヘッドユニット２０は、キャリッジ２５に対する板状部材４０の相対的な位置を調整する位置調整部材５０を備えている。位置調整部材５０は、キャリッジ２５に回転可能に設けられている。位置調整部材５０は、キャリッジ２５に対して回転することによって、後述するカム面５２Ｂに当接する板状部材４０の位置を変更するように構成されている。図６に示すように、位置調整部材５０は、略円柱形状に形成されている。位置調整部材５０は、底壁５２と、底壁５２の外縁から上方に向けて延びる側壁５４と、底壁５２の中央部から上方に延びる支持壁５６と、を有する。図７に示すように、底壁５２は、円環状の底面５２Ａと、板状部材４０に当接するカム面５２Ｂとを有する。底面５２Ａは、内面の一例である。カム面５２Ｂは、位置調整部材５０の外周面に設けられている。底面５２Ａは、カム面５２Ｂが設けられた位置調整部材５０の外周面よりも位置調整部材５０の回転中心側（即ち後述する第１軸８５Ａまたは第２軸８５Ｂ側）に位置する。底壁５２には、上下方向に貫通する貫通孔５２Ｈが形成されている。貫通孔５２Ｈは、支持壁５６を貫通する。貫通孔５２Ｈには、第１軸８５Ａ（図３参照）または第２軸８５Ｂ（図３参照）が挿入される。位置調整部材５０は、第１軸８５Ａおよび第２軸８５Ｂを中心に回転可能に構成されている。底壁５２は、底面５２Ａに形成され、かつ、放射状に延びる複数の突起５２Ｃを有する。突起５２Ｃは、周方向に沿って等間隔に配置されている。突起５２Ｃには、支持台８０の第１突状部８６Ａ（図４参照）または第２突状部８６Ｂ（図４参照）が係止する。 As shown in FIG. 3, the ink head unit 20 includes a position adjustment member 50 that adjusts the relative position of the plate member 40 with respect to the carriage 25. The position adjustment member 50 is rotatably provided on the carriage 25. The position adjustment member 50 is configured to change the position of the plate member 40 that comes into contact with a cam surface 52B, which will be described later, by rotating with respect to the carriage 25. As shown in FIG. 6, the position adjustment member 50 is formed into a substantially cylindrical shape. The position adjustment member 50 has a bottom wall 52, a side wall 54 extending upward from the outer edge of the bottom wall 52, and a support wall 56 extending upward from the center of the bottom wall 52. As shown in FIG. 7, the bottom wall 52 has an annular bottom surface 52A and a cam surface 52B that comes into contact with the plate member 40. As shown in FIG. The bottom surface 52A is an example of the inner surface. The cam surface 52B is provided on the outer peripheral surface of the position adjustment member 50. The bottom surface 52A is located closer to the rotation center of the position adjustment member 50 than the outer peripheral surface of the position adjustment member 50 provided with the cam surface 52B (that is, on the side of the first shaft 85A or second shaft 85B described later). A through hole 52H is formed in the bottom wall 52 and extends through the bottom wall 52 in the vertical direction. The through hole 52H passes through the support wall 56. A first shaft 85A (see FIG. 3) or a second shaft 85B (see FIG. 3) is inserted into the through hole 52H. The position adjustment member 50 is configured to be rotatable about the first shaft 85A and the second shaft 85B. The bottom wall 52 has a plurality of protrusions 52C formed on the bottom surface 52A and extending radially. The protrusions 52C are arranged at equal intervals along the circumferential direction. A first protrusion 86A (see FIG. 4) or a second protrusion 86B (see FIG. 4) of the support base 80 is engaged with the protrusion 52C.

図６に示すように、カム面５２Ｂは、底壁５２の側面を構成する。本実施形態の底壁５２は、等速度カムである。等速度カムは、その回転角度とカム面５２Ｂに当接する板状部材４０の変位量とが線形関係を保つように構成されたカムである。図８に示すように、カム面５２Ｂが始点５２Ｓから終点５２Ｅまで回転する間に板状部材４０は距離Ｐだけ直線的に変位する。板状部材４０が距離Ｐの中間に位置するときの板状部材４０とカム面５２Ｂとが当接する点を原点５２Ｘとすると、図９に示すように、カム面５２Ｂが反時計回りに角度θだけ回転（即ち－θだけ回転）して、板状部材４０と当接する点が原点５２Ｘから始点５２Ｓに移動すると、板状部材４０の変位量は「－２／Ｐ」となり、カム面５２Ｂが時計回りに角度θだけ回転（即ちθだけ回転）して、板状部材４０と当接する点が原点５２Ｘから終点５２Ｅに移動すると、板状部材４０の変位量は「２／Ｐ」となる。本実施形態では、θは１８０°であるが、これに限定されない。 As shown in FIG. 6, the cam surface 52B constitutes a side surface of the bottom wall 52. The bottom wall 52 of this embodiment is a constant velocity cam. The constant velocity cam is a cam configured such that its rotation angle and the amount of displacement of the plate member 40 that contacts the cam surface 52B maintain a linear relationship. As shown in FIG. 8, the plate member 40 is linearly displaced by a distance P while the cam surface 52B rotates from the starting point 52S to the ending point 52E. Assuming that the point where the plate member 40 and the cam surface 52B contact when the plate member 40 is located in the middle of the distance P is the origin 52X, the cam surface 52B rotates counterclockwise at an angle θ as shown in FIG. When the point of contact with the plate-like member 40 moves from the origin 52X to the starting point 52S by rotating by -θ (that is, rotating by -θ), the displacement amount of the plate-like member 40 becomes "-2/P", and the cam surface 52B When the plate member 40 is rotated clockwise by an angle θ (that is, rotated by θ) and the point of contact with the plate member 40 moves from the origin 52X to the end point 52E, the displacement amount of the plate member 40 becomes “2/P”. In this embodiment, θ is 180°, but is not limited to this.

図６に示すように、側壁５４は、底壁５２の外縁に沿って形成されている。側壁５４には、上方から下方に向けて凹む複数の凹溝５４Ｈが形成されている。図１１に示すように、凹溝５４Ｈには、例えば、六角レンチのような工具１００を挿入可能に形成されている。工具１００を用いることによって、ベース部材３０の外部から凹溝５４Ｈにアクセスすることができる。即ち、ベース部材３０の第１縦壁３４に形成された開口３４Ｈを介して凹溝５４Ｈにアクセスすることができる。本実施形態では、６つの凹溝５４Ｈが略等間隔で形成されているが、凹溝５４Ｈの数および間隔はこれに限定されない。図６に示すように、位置調整部材５０は、側壁５４の上端に形成され、かつ、カム面５２Ｂの中間位置（即ち原点５２Ｘ）を示す目印５５を有する。目印５５は、三角形状に形成された第１目印５５Ａおよび第２目印５５Ｂを含む。図８に示すように、第１目印５５Ａは、原点５２Ｘの側方に位置し、頂点が原点５２Ｘを指している。第２目印５５Ｂは、始点５２Ｓおよび終点５２Ｅの側方に位置し、頂点が原点５２Ｘを指している。図１２に示すように、板状部材４０をベース壁３２に搭載するときに、後述する第１位置調整部材５１Ａの第１目印５５Ａの先に板状部材４０の第１当接部４８Ａを位置させ、かつ、後述する第２位置調整部材５１Ｂの第１目印５５Ａの先に板状部材４０の第２当接部４８Ｂを位置させることによって、第１位置調整部材５１Ａおよび第２位置調整部材５１Ｂを予め設定された設計値にセットすることができる。支持壁５６は、筒状に形成されている。図６に示すように、支持壁５６は、貫通孔５２Ｈに挿入された第１軸８５Ａおよび第２軸８５Ｂを支持する。 As shown in FIG. 6, the side wall 54 is formed along the outer edge of the bottom wall 52. The side wall 54 is formed with a plurality of grooves 54H recessed from above to below. As shown in FIG. 11, the groove 54H is formed into which a tool 100 such as a hexagonal wrench can be inserted, for example. By using the tool 100, the groove 54H can be accessed from the outside of the base member 30. That is, the groove 54H can be accessed through the opening 34H formed in the first vertical wall 34 of the base member 30. In this embodiment, six grooves 54H are formed at approximately equal intervals, but the number and spacing of grooves 54H are not limited to this. As shown in FIG. 6, the position adjustment member 50 has a mark 55 formed at the upper end of the side wall 54 and indicating the intermediate position (i.e., the origin 52X) of the cam surface 52B. The mark 55 includes a first mark 55A and a second mark 55B formed in a triangular shape. As shown in FIG. 8, the first mark 55A is located on the side of the origin 52X, and its apex points to the origin 52X. The second mark 55B is located to the side of the starting point 52S and the ending point 52E, and its apex points to the origin 52X. As shown in FIG. 12, when mounting the plate member 40 on the base wall 32, the first contact portion 48A of the plate member 40 is positioned beyond a first mark 55A of a first position adjustment member 51A, which will be described later. and by positioning the second contact portion 48B of the plate member 40 beyond the first mark 55A of the second position adjustment member 51B, which will be described later, the first position adjustment member 51A and the second position adjustment member 51B can be set to a preset design value. The support wall 56 is formed into a cylindrical shape. As shown in FIG. 6, the support wall 56 supports the first shaft 85A and the second shaft 85B inserted into the through hole 52H.

図３に示すように、位置調整部材５０は、板状部材４０の位置を調整する第１位置調整部材５１Ａおよび第２位置調整部材５１Ｂを含む。第１位置調整部材５１Ａは、キャリッジ２５に対する板状部材４０の相対的な副走査方向Ｘの位置を調整する。即ち、第１位置調整部材５１Ａは、板状部材４０の前後方向の位置を調整する。第２位置調整部材５１Ｂは、キャリッジ２５に対する板状部材４０の相対的な回転角度を調整する。即ち、第２位置調整部材５１Ｂは、板状部材４０の傾きを調整する。第１位置調整部材５１Ａは、第２位置調整部材５１Ｂよりも前方（即ち副走査方向Ｘの下流側）に位置する。第２位置調整部材５１Ｂは、インクヘッド２３よりも前方に位置する。なお、本実施形態では、第１板状部材４１Ａの副走査方向Ｘの位置は変更しないため、第１板状部材４１Ａに関しては、第１位置調整部材５１Ａは設けられていない。 As shown in FIG. 3, the position adjustment member 50 includes a first position adjustment member 51A and a second position adjustment member 51B that adjust the position of the plate member 40. The first position adjustment member 51A adjusts the relative position of the plate member 40 in the sub-scanning direction X with respect to the carriage 25. That is, the first position adjustment member 51A adjusts the position of the plate member 40 in the front-rear direction. The second position adjustment member 51B adjusts the rotation angle of the plate member 40 relative to the carriage 25. That is, the second position adjustment member 51B adjusts the inclination of the plate member 40. The first position adjustment member 51A is located in front of the second position adjustment member 51B (that is, on the downstream side in the sub-scanning direction X). The second position adjustment member 51B is located in front of the ink head 23. In this embodiment, since the position of the first plate member 41A in the sub-scanning direction X is not changed, the first position adjustment member 51A is not provided for the first plate member 41A.

図３に示すように、第１位置調整部材５１Ａは、第１軸８５Ａに回転可能に取り付けられている。第１位置調整部材５１Ａは、第１軸８５Ａを中心に回転する。図１０に示すように、第１位置調整部材５１Ａの突起５２Ｃには、第１突状部８６Ａが係止している。第１位置調整部材５１Ａを所定の角度（例えば１°～５°、好ましくは３°。）だけ回転させたとき、第１突状部８６Ａ（図４も参照）は第１位置調整部材５１Ａの突起５２Ｃ（図７も参照）を乗り越えるように構成されている。第１突状部８６Ａが突起５２Ｃを乗り越えるときに第１アーム部８６Ｃは、下方に弾性変形する。第１突状部８６Ａが突起５２Ｃを乗り越えて第１アーム部８６Ｃが元の状態に復元するときに、第１突状部８６Ａが別の突起５２Ｃと当接して係止する。このときに、第１位置調整部材５１Ａにクリック感が発生する。第２位置調整部材５１Ｂは、第２軸８５Ｂに回転可能に取り付けられている。第２位置調整部材５１Ｂは、第２軸８５Ｂを中心に回転する。第２位置調整部材５１Ｂの突起５２Ｃには、第２突状部８６Ｂが係止している。第２位置調整部材５１Ｂを所定の角度（例えば１°～５°、好ましくは３。°）だけ回転させたとき、第２突状部８６Ｂ（図４参照）は第２位置調整部材５１Ｂの突起５２Ｃ（図７参照）を乗り越えるように構成されている。第２突状部８６Ｂが突起５２Ｃを乗り越えるときに第２アーム部８６Ｄ（図４参照）は、下方に弾性変形する。第２突状部８６Ｂが突起５２Ｃを乗り越えて第２アーム部８６Ｄが元の状態に復元するときに、第２突状部８６Ｂが別の突起５２Ｃと当接して係止する。このときに、第２位置調整部材５１Ｂにクリック感が発生する。 As shown in FIG. 3, the first position adjustment member 51A is rotatably attached to the first shaft 85A. The first position adjustment member 51A rotates around the first shaft 85A. As shown in FIG. 10, the first protrusion 86A is engaged with the protrusion 52C of the first position adjustment member 51A. When the first position adjustment member 51A is rotated by a predetermined angle (for example, 1° to 5°, preferably 3°), the first protrusion 86A (see also FIG. 4) rotates the first position adjustment member 51A. It is configured to climb over the protrusion 52C (see also FIG. 7). When the first projecting portion 86A climbs over the protrusion 52C, the first arm portion 86C is elastically deformed downward. When the first protruding portion 86A rides over the protrusion 52C and the first arm portion 86C is restored to its original state, the first protruding portion 86A abuts and locks another protrusion 52C. At this time, a click feeling occurs in the first position adjustment member 51A. The second position adjustment member 51B is rotatably attached to the second shaft 85B. The second position adjustment member 51B rotates around the second shaft 85B. A second projecting portion 86B is engaged with the projection 52C of the second position adjustment member 51B. When the second position adjusting member 51B is rotated by a predetermined angle (for example, 1° to 5°, preferably 3°), the second projecting portion 86B (see FIG. 4) 52C (see FIG. 7). When the second projecting portion 86B climbs over the protrusion 52C, the second arm portion 86D (see FIG. 4) is elastically deformed downward. When the second protrusion 86B climbs over the protrusion 52C and the second arm portion 86D returns to its original state, the second protrusion 86B abuts and locks another protrusion 52C. At this time, a click feeling occurs in the second position adjustment member 51B.

以上のように、本実施形態のプリンタ１０によると、位置調整部材５０の底壁５２のカム面５２Ｂは板状部材４０に当接するため、位置調整部材５０が回転することによって、即ち、板状部材４０と当接するカム面５２Ｂの位置を変更させることによって、板状部材４０が移動する。このように、板状部材４０の位置が変更されるため、板状部材４０に装着されたインクヘッド２３のキャリッジ２５に対する相対的な位置を調整することができる。ここで、底壁５２の底面５２Ａに形成された突起５２Ｃには、キャリッジ２５に設けられた突状部８６が係止している。そして、位置調整部材５０を所定の角度だけ回転させると、突状部８６は突起５２Ｃを乗り越える。突状部８６が突起５２Ｃを乗り越えると、位置調整部材５０を把持している作業者の指先等にはクリック感が伝達される。このように、作業者は、クリック感を感じることによって、位置調整部材５０が所定の角度だけ回転したことを認識することができるため、クリック感に基づいてキャリッジ２５に対するインクヘッド２３の位置調整を精度よく行うことができる。 As described above, according to the printer 10 of the present embodiment, the cam surface 52B of the bottom wall 52 of the position adjustment member 50 comes into contact with the plate-like member 40, so that when the position adjustment member 50 rotates, the cam surface 52B of the bottom wall 52 of the position adjustment member 50 The plate member 40 is moved by changing the position of the cam surface 52B that contacts the member 40. Since the position of the plate member 40 is changed in this way, the relative position of the ink head 23 attached to the plate member 40 with respect to the carriage 25 can be adjusted. Here, a protrusion 86 provided on the carriage 25 is engaged with a protrusion 52C formed on the bottom surface 52A of the bottom wall 52. Then, when the position adjustment member 50 is rotated by a predetermined angle, the protrusion 86 climbs over the protrusion 52C. When the protrusion 86 passes over the protrusion 52C, a click feeling is transmitted to the fingertips of the operator holding the position adjustment member 50. In this way, the operator can recognize that the position adjustment member 50 has rotated by a predetermined angle by feeling the click feeling, so the operator can adjust the position of the ink head 23 with respect to the carriage 25 based on the click feeling. It can be done with high precision.

本実施形態のプリンタ１０では、キャリッジ２５は、回転軸８９を備え、板状部材４０は、回転軸８９が挿入されかつ副走査方向Ｘに延びる挿入孔４０Ａを備え、位置調整部材５０は、キャリッジ２５に対する板状部材４０の相対的な副走査方向Ｘの位置を調整する第１位置調整部材５１Ａと、キャリッジ２５に対する板状部材４０の回転軸８９を中心とした相対的な回転角度を調整する第２位置調整部材５１Ｂと、を含む。これにより、キャリッジ２５に対するインクヘッド２３の相対的な副走査方向Ｘの位置および傾きを調整することができる。 In the printer 10 of this embodiment, the carriage 25 includes a rotating shaft 89, the plate member 40 includes an insertion hole 40A into which the rotating shaft 89 is inserted and extends in the sub-scanning direction The first position adjustment member 51A adjusts the position of the plate member 40 relative to the carriage 25 in the sub-scanning direction A second position adjustment member 51B is included. Thereby, the relative position and inclination of the ink head 23 in the sub-scanning direction X with respect to the carriage 25 can be adjusted.

本実施形態のプリンタ１０では、第２位置調整部材５１Ｂは、インクヘッド２３よりも副走査方向Ｘの下流側に位置し、第１位置調整部材５１Ａは、第２位置調整部材５１Ｂよりも副走査方向Ｘの下流側に位置する。これにより、第１位置調整部材５１Ａおよび第２位置調整部材５１Ｂをキャリッジ２５上にコンパクトに配置することができる。 In the printer 10 of this embodiment, the second position adjustment member 51B is located downstream of the ink head 23 in the sub-scanning direction X, and the first position adjustment member 51A is located downstream of the ink head 23 in the sub-scan direction Located on the downstream side in direction X. Thereby, the first position adjustment member 51A and the second position adjustment member 51B can be arranged compactly on the carriage 25.

本実施形態のプリンタ１０は、板状部材４０を副走査方向Ｘに付勢する第１ねじりコイルばね９５Ａと、板状部材４０を主走査方向Ｙに付勢する第２ねじりコイルばね９５Ｂと、を備え、副走査方向Ｘに関して、第１ねじりコイルばね９５Ａ、板状部材４０および第１位置調整部材５１Ａの順に並び、主走査方向Ｙに関して、第２ねじりコイルばね９５Ｂ、板状部材４０および第２位置調整部材５１Ｂの順に並ぶ。これにより、板状部材４０をキャリッジ２５に容易に載置することができる。また、キャリッジ２５に対する板状部材４０の基準位置を容易に設定することができる。 The printer 10 of this embodiment includes a first torsion coil spring 95A that biases the plate member 40 in the sub-scanning direction X, and a second torsion coil spring 95B that biases the plate member 40 in the main scan direction Y. The first torsion coil spring 95A, the plate member 40 and the first position adjustment member 51A are arranged in this order in the sub-scanning direction The two position adjustment members 51B are arranged in this order. Thereby, the plate-like member 40 can be easily placed on the carriage 25. Further, the reference position of the plate member 40 with respect to the carriage 25 can be easily set.

本実施形態のプリンタ１０では、位置調整部材５０は、略円柱形状に形成され、円環状に形成された底面５２Ａと、カム面５２Ｂと、を有する底壁５２と、底壁５２から上方に向けて延びる側壁５４と、を有し、突状部８６は、底壁５２の下方に配置されている。かかる構成によると、位置調整部材が把持しやすくなる。また、突状部８６を底壁５２の下方に配置するため、位置調整部材の配置の自由度が高まる。 In the printer 10 of this embodiment, the position adjustment member 50 is formed in a substantially cylindrical shape, and includes a bottom wall 52 having an annular bottom surface 52A and a cam surface 52B, and a position adjustment member 50 directed upward from the bottom wall 52. The protruding portion 86 is disposed below the bottom wall 52. According to this configuration, the position adjustment member can be easily held. Further, since the protruding portion 86 is disposed below the bottom wall 52, the degree of freedom in arranging the position adjustment member is increased.

本実施形態のプリンタ１０では、底壁５２は、等速度カムである。これにより、位置調整部材５０の回転角度と板状部材４０の変位量との関係が直線状で表される（リニアに変化する）ため、キャリッジ２５に対するインクヘッド２３の位置調整をより精度よく行うことができる。 In the printer 10 of this embodiment, the bottom wall 52 is a constant velocity cam. As a result, the relationship between the rotation angle of the position adjustment member 50 and the displacement amount of the plate member 40 is expressed linearly (changes linearly), so that the position of the ink head 23 with respect to the carriage 25 can be adjusted with higher precision. be able to.

本実施形態のプリンタ１０では、側壁５４には、上方から下方に向けて凹む複数の凹溝５４Ｈが形成されている。これにより、作業者は側壁５４を容易に掴むことができる。また、凹溝５４Ｈに例えば六角レンチ等の工具１００を嵌め込むことによって、位置調整部材５０を回転させることができるようになる。 In the printer 10 of this embodiment, the side wall 54 is formed with a plurality of grooves 54H that are recessed from above to below. This allows the worker to easily grasp the side wall 54. Further, by fitting a tool 100 such as a hexagonal wrench into the groove 54H, the position adjustment member 50 can be rotated.

本実施形態のプリンタ１０では、キャリッジ２５は、板状部材４０が配置される板状に形成されたベース壁３２と、ベース壁３２の副走査方向Ｘの下流側の端部から上方に延びる第１縦壁３４と、を有するベース部材３０を備え、第１縦壁３４には、ベース部材３０の外部から凹溝５４Ｈにアクセス可能な開口３４Ｈが形成されている。位置調整部材５０の周りに他の部材（例えばインクヘッド２３）が配置されることによって、キャリッジ２５の外部から位置調整部材５０にアクセスすることが困難な場合があり得る。このような場合でも、第１縦壁３４に開口３４Ｈが形成されることにより、ベース部材３０の外部から凹溝５４Ｈにアクセスすることができるため、例えば六角レンチ等の工具１００を用いることによって、位置調整部材５０を回転させることができる。 In the printer 10 of the present embodiment, the carriage 25 includes a base wall 32 formed in a plate shape on which the plate member 40 is arranged, and a base wall 32 extending upward from the downstream end of the base wall 32 in the sub-scanning direction X. The first vertical wall 34 has an opening 34H that allows access to the groove 54H from the outside of the base member 30. When other members (for example, the ink head 23) are arranged around the position adjustment member 50, it may be difficult to access the position adjustment member 50 from outside the carriage 25. Even in such a case, since the opening 34H is formed in the first vertical wall 34, the groove 54H can be accessed from the outside of the base member 30, so for example, by using a tool 100 such as a hex wrench, The position adjustment member 50 can be rotated.

本実施形態のプリンタ１０では、位置調整部材５０は、側壁５４の上端に形成され、かつ、カム面５２Ｂの原点５２Ｘを示す目印５５を有する。これにより、板状部材４０をキャリッジ２５に搭載するときに、目印５５の先に板状部材４０との当接位置を位置させることで、位置調整部材５０を予め設定された設計値にセットすることができる。 In the printer 10 of this embodiment, the position adjustment member 50 has a mark 55 formed at the upper end of the side wall 54 and indicating the origin 52X of the cam surface 52B. As a result, when the plate member 40 is mounted on the carriage 25, the position adjustment member 50 is set to a preset design value by locating the contact position with the plate member 40 beyond the mark 55. be able to.

本実施形態のプリンタ１０では、板状部材４０は、第１インクヘッド２３Ａが装着される第１板状部材４１Ａと、第１板状部材４１Ａに対して主走査方向Ｙに並びかつ副走査方向Ｘに偏倚して配置され、かつ、第２インクヘッド２３Ｂが装着される第２板状部材４１Ｂと、を含み、第１板状部材４１Ａをキャリッジ２５に固定する第１締結部材９１Ａと、第２板状部材４１Ｂをキャリッジ２５に固定する第２締結部材９１Ｂとは、主走査方向Ｙに関して少なくとも一部が重なるように配置されている。第１板状部材４１Ａと第２板状部材４１Ｂとが主走査方向Ｙに並ぶため、キャリッジ２５全体の主走査方向Ｙの長さが長くなり得る。しかしながら、第１板状部材４１Ａと第２板状部材４１Ｂとは副走査方向Ｘにずれて配置されており、かつ、第１締結部材９１Ａと第２締結部材９１Ｂとが主走査方向Ｙに関して少なくとも一部が重なるように配置されているため、第１板状部材４１Ａと第２板状部材４１Ｂとの主走査方向Ｙの距離を短くすることができる。この結果、キャリッジ２５の主走査方向Ｙの大型化を抑制することができる。 In the printer 10 of this embodiment, the plate-like member 40 is arranged in the main scanning direction Y with respect to the first plate-like member 41A to which the first ink head 23A is attached, and in the sub-scanning direction. a first fastening member 91A that fixes the first plate member 41A to the carriage 25; The second fastening member 91B that fixes the two plate-like members 41B to the carriage 25 is arranged so as to at least partially overlap in the main scanning direction Y. Since the first plate member 41A and the second plate member 41B are lined up in the main scanning direction Y, the length of the entire carriage 25 in the main scanning direction Y can become long. However, the first plate-like member 41A and the second plate-like member 41B are arranged offset in the sub-scanning direction X, and the first fastening member 91A and the second fastening member 91B are at least Since they are arranged so as to partially overlap, the distance between the first plate member 41A and the second plate member 41B in the main scanning direction Y can be shortened. As a result, it is possible to suppress the carriage 25 from increasing in size in the main scanning direction Y.

以上、本発明の好適な実施形態について説明した。しかし、上述の実施形態は例示に過ぎず、本発明は他の種々の形態で実施することができる。 The preferred embodiments of the present invention have been described above. However, the above-described embodiments are merely illustrative, and the present invention can be implemented in various other forms.

上述した実施形態では、位置調整部材５０の貫通孔５２Ｈに第１軸８５Ａまたは第２軸８５Ｂが挿入され、位置調整部材５０が第１軸８５Ａまたは第２軸８５Ｂを中心に回転可能に構成されていたが、これに限定されない。例えば、位置調整部材５０の底面５２Ａから下方に延びる軸が設けられ、支持台８０に該軸が挿入される挿入孔が形成されていてもよい。これにより、位置調整部材は、軸を中心に回転することができる。 In the embodiment described above, the first shaft 85A or the second shaft 85B is inserted into the through hole 52H of the position adjustment member 50, and the position adjustment member 50 is configured to be rotatable about the first shaft 85A or the second shaft 85B. However, it is not limited to this. For example, a shaft may be provided that extends downward from the bottom surface 52A of the position adjustment member 50, and an insertion hole into which the shaft is inserted may be formed in the support base 80. Thereby, the position adjustment member can rotate around the axis.

上述した実施形態では、キャリッジ２５は回転軸８９を備え、板状部材４０は回転軸８９が挿入されかつ副走査方向Ｘに延びる挿入孔４０Ａを備えていたが、これに限定されない。例えば、キャリッジ２５が挿入孔４０Ａを備え、板状部材４０が回転軸８９を備えていてもよい。 In the embodiment described above, the carriage 25 was provided with the rotating shaft 89, and the plate member 40 was provided with the insertion hole 40A into which the rotating shaft 89 was inserted and extending in the sub-scanning direction X, but the present invention is not limited thereto. For example, the carriage 25 may include the insertion hole 40A, and the plate member 40 may include the rotation shaft 89.

上述した実施形態では、カム面５２Ｂは、底壁５２の側面の全体を構成していたが、底壁５２の側面の一部のみを構成していてもよい。即ち、カム面５２Ｂは、平面視で略円弧状であってもよい。 In the embodiment described above, the cam surface 52B constitutes the entire side surface of the bottom wall 52, but may constitute only a part of the side surface of the bottom wall 52. That is, the cam surface 52B may have a substantially arc shape in plan view.

上述した実施形態では、位置調整部材５０の底面５２Ａに形成された突起５２Ｃに、突起５２Ｃより下方に位置する第１突状部８６Ａまたは第２突状部８６Ｂが係止するように構成されていたが、これに限定されない。例えば、位置調整部材５０の上面（上下方向に関して底面５２Ａと反対側の面）に突起５２Ｃが形成され、突起５２Ｃに係止する第１突状部８６Ａおよび第２突状部８６Ｂを突起５２Ｃより上方に位置させてもよい。 In the embodiment described above, the first protrusion 86A or the second protrusion 86B located below the protrusion 52C is configured to engage with the protrusion 52C formed on the bottom surface 52A of the position adjustment member 50. However, it is not limited to this. For example, a protrusion 52C is formed on the upper surface of the position adjustment member 50 (the surface opposite to the bottom surface 52A in the vertical direction), and the first protrusion 86A and the second protrusion 86B that are engaged with the protrusion 52C are moved from the protrusion 52C. It may also be located above.

ここで開示される技術は様々なタイプのプリンタに適用することができる。上述した実施形態で示したロール状の記録媒体５を搬送する、所謂、Roll-to-Rollタイプのプリンタ１０の他、例えばフラットベッドタイプのプリンタにも同様に適用することができる。 The techniques disclosed herein can be applied to various types of printers. In addition to the so-called roll-to-roll type printer 10 that conveys the roll-shaped recording medium 5 shown in the embodiment described above, the present invention can be similarly applied to, for example, a flatbed type printer.

１０プリンタ（インクジェットプリンタ）
１６載置台（プラテン）
２３インクヘッド
２５キャリッジ
４０板状部材
４１Ａ第１板状部材
４１Ｂ第２板状部材
５０位置調整部材
５１Ａ第１位置調整部材
５１Ｂ第２位置調整部材
５２底壁
５２Ａ底面
５２Ｂカム面
５２Ｃ突起
５４側壁
８６突状部
８６Ａ第１突状部
８６Ｂ第２突状部 10 Printer (inkjet printer)
16 Mounting table (platen)
23 Ink head 25 Carriage 40 Plate member 41A First plate member 41B Second plate member 50 Position adjustment member 51A First position adjustment member 51B Second position adjustment member 52 Bottom wall 52A Bottom surface 52B Cam surface 52C Protrusion 54 Side wall 86 Protrusion 86A First protrusion 86B Second protrusion

Claims

a mounting table on which the recording medium is mounted;
a carriage disposed above the mounting table and movable in the main scanning direction;
a plate-like member mounted on the carriage and whose position relative to the carriage can be changed;
an ink head attached to the plate-like member and discharging ink onto the recording medium placed on the mounting table;
a position adjustment member rotatably provided on the carriage and adjusting the relative position of the plate member with respect to the carriage;
The position adjustment member is
a cam surface provided on the outer peripheral surface and in contact with the plate-shaped member;
a plurality of protrusions formed on an inner surface located closer to the rotation center of the position adjustment member than the outer peripheral surface and extending radially;
configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage,
The carriage has an elastically deformable arm part, and a protrusion provided at the tip of the arm part and engaged with the protrusion,
The inkjet printer is configured such that when the position adjustment member is rotated by a predetermined angle, the protrusion portion is configured to climb over the protrusion.

a mounting table on which the recording medium is mounted;
a carriage disposed above the mounting table and movable in the main scanning direction;
a plate-like member mounted on the carriage and whose position relative to the carriage can be changed;
an ink head attached to the plate-like member and discharging ink onto the recording medium placed on the mounting table;
a position adjustment member rotatably provided on the carriage and adjusting the relative position of the plate member with respect to the carriage;
The ink head includes a first ink head and a second ink head,
The plate-like member is
a first plate member provided with the first ink head;
a second plate-like member provided with the second ink head;
The first plate-like member and the second plate-like member are each configured to be able to change their relative positions with respect to the carriage,
The position adjustment member is
a cam surface provided on the outer peripheral surface and in contact with the plate-shaped member;
a plurality of protrusions formed on an inner surface located closer to the rotation center of the position adjustment member than the outer peripheral surface and extending radially;
configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage,
The carriage has a protrusion that engages with the protrusion,
The inkjet printer is configured such that when the position adjustment member is rotated by a predetermined angle, the protrusion portion is configured to climb over the protrusion.

a mounting table on which the recording medium is mounted;
a carriage disposed above the mounting table and movable in the main scanning direction;
a plate-like member mounted on the carriage and whose position relative to the carriage can be changed;
an ink head attached to the plate-like member and discharging ink onto the recording medium placed on the mounting table;
a position adjustment member rotatably provided on the carriage and adjusting the relative position of the plate member with respect to the carriage;
The position adjustment member is
a cam surface provided on the outer peripheral surface and in contact with the plate-shaped member;
a plurality of protrusions formed on an inner surface located closer to the rotation center of the position adjustment member than the outer peripheral surface and extending radially;
configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage,
The carriage has a protrusion that engages with the protrusion,
When the position adjustment member is rotated by a predetermined angle, the protrusion is configured to climb over the protrusion,
The ink head includes a first ink head and a second ink head,
The plate-shaped member is arranged in the main scanning direction and offset in the sub-scanning direction with respect to a first plate-shaped member to which the first ink head is attached, and a second plate-like member to which the second ink head is attached;
A first fastening member that fixes the first plate-like member to the carriage and a second fastening member that fixes the second plate-like member to the carriage are arranged so that at least a portion thereof overlaps in the main scanning direction. An inkjet printer.

The carriage includes either a rotating shaft and an insertion hole into which the rotating shaft is inserted and extends in the sub-scanning direction,
The plate-like member includes the other of the rotating shaft and the insertion hole,
The position adjustment member is
a first position adjustment member that adjusts the relative position of the plate member with respect to the carriage in the sub-scanning direction;
The inkjet printer according to any one of claims 1 to 3 , further comprising a second position adjustment member that adjusts a relative rotation angle of the plate-like member to the carriage around the rotation axis.

a mounting table on which the recording medium is mounted;
a carriage disposed above the mounting table and movable in the main scanning direction;
a plate-like member mounted on the carriage and whose position relative to the carriage can be changed;
an ink head attached to the plate-like member and discharging ink onto the recording medium placed on the mounting table;
a position adjustment member rotatably provided on the carriage and adjusting the relative position of the plate member with respect to the carriage;
The carriage includes either a rotating shaft and an insertion hole into which the rotating shaft is inserted and extends in the sub-scanning direction,
The plate-like member includes the other of the rotating shaft and the insertion hole,
The position adjustment member is
a cam surface provided on the outer peripheral surface and in contact with the plate-shaped member;
a plurality of protrusions formed on an inner surface located closer to the rotation center of the position adjustment member than the outer peripheral surface and extending radially;
a first position adjustment member that adjusts the relative position of the plate member with respect to the carriage in the sub-scanning direction;
a second position adjustment member that adjusts a relative rotation angle of the plate member with respect to the carriage around the rotation axis ;
configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage,
The carriage has a protrusion that engages with the protrusion,
The inkjet printer is configured such that when the position adjustment member is rotated by a predetermined angle, the protrusion portion is configured to climb over the protrusion.

The second position adjustment member is located downstream of the ink head in the sub-scanning direction,
The inkjet printer according to claim 4 , wherein the first position adjustment member is located downstream in the sub-scanning direction from the second position adjustment member.

a first biasing member that biases the plate member in the sub-scanning direction;
a second biasing member that biases the plate member in the main scanning direction;
With respect to the sub-scanning direction, the first biasing member, the plate member, and the first position adjustment member are arranged in this order,
The inkjet printer according to any one of claims 4 to 6 , wherein the second biasing member, the plate member, and the second position adjustment member are arranged in this order with respect to the main scanning direction.

The position adjustment member is formed in a substantially cylindrical shape,
a bottom wall having the inner surface formed in an annular shape and the cam surface;
a side wall extending upward from the bottom wall;
The inkjet printer according to any one of claims 1 to 7 , wherein the protrusion is located below the bottom wall.

The inkjet printer according to claim 8 , wherein the side wall has a plurality of grooves recessed from above to below.

a mounting table on which the recording medium is mounted;
a carriage disposed above the mounting table and movable in the main scanning direction;
a plate-like member mounted on the carriage and whose position relative to the carriage can be changed;
an ink head attached to the plate-like member and discharging ink onto the recording medium placed on the mounting table;
a position adjustment member rotatably provided on the carriage and adjusting the relative position of the plate member with respect to the carriage;
The position adjustment member is
a cam surface provided on the outer peripheral surface and in contact with the plate-shaped member;
a plurality of protrusions formed on an inner surface located closer to the rotation center of the position adjustment member than the outer peripheral surface and extending radially;
configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage,
The carriage has a protrusion that engages with the protrusion,
When the position adjustment member is rotated by a predetermined angle, the protrusion is configured to climb over the protrusion,
The position adjustment member is formed in a substantially cylindrical shape,
a bottom wall having the inner surface formed in an annular shape and the cam surface;
a side wall extending upward from the bottom wall;
the protrusion is arranged below the bottom wall,
The inkjet printer, wherein the bottom wall is a constant velocity cam.

The inkjet printer according to claim 10 , wherein the side wall has a plurality of grooves recessed from above to below.

a mounting table on which the recording medium is mounted;
a carriage disposed above the mounting table and movable in the main scanning direction;
a plate-like member mounted on the carriage and whose position relative to the carriage can be changed;
an ink head attached to the plate-like member and discharging ink onto the recording medium placed on the mounting table;
a position adjustment member rotatably provided on the carriage and adjusting the relative position of the plate member with respect to the carriage;
The position adjustment member is
a cam surface provided on the outer peripheral surface and in contact with the plate-shaped member;
a plurality of protrusions formed on an inner surface located closer to the rotation center of the position adjustment member than the outer peripheral surface and extending radially;
configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage,
The carriage has a protrusion that engages with the protrusion,
When the position adjustment member is rotated by a predetermined angle, the protrusion is configured to climb over the protrusion,
The position adjustment member is formed in a substantially cylindrical shape,
a bottom wall having the inner surface formed in an annular shape and the cam surface;
a side wall extending upward from the bottom wall;
the protrusion is arranged below the bottom wall,
A plurality of grooves recessed from above to below are formed in the side wall,
The carriage includes a base member having a plate-shaped base wall on which the plate-shaped member is arranged, and a vertical wall extending upward from a downstream end of the base wall in the sub-scanning direction,
An inkjet printer, wherein the vertical wall has an opening that allows access to the groove from the outside of the base member.

a mounting table on which the recording medium is mounted;
a carriage disposed above the mounting table and movable in the main scanning direction;
a plate-like member mounted on the carriage and whose position relative to the carriage can be changed;
an ink head attached to the plate-like member and discharging ink onto the recording medium placed on the mounting table;
a position adjustment member rotatably provided on the carriage and adjusting the relative position of the plate member with respect to the carriage;
The position adjustment member is
a cam surface provided on the outer peripheral surface and in contact with the plate-shaped member;
a plurality of protrusions formed on an inner surface located closer to the rotation center of the position adjustment member than the outer peripheral surface and extending radially;
configured to change the position of the plate member in contact with the cam surface by rotating with respect to the carriage,
The carriage has a protrusion that engages with the protrusion,
When the position adjustment member is rotated by a predetermined angle, the protrusion is configured to climb over the protrusion,
The position adjustment member is formed in a substantially cylindrical shape,
a bottom wall having the inner surface formed in an annular shape and the cam surface;
a side wall extending upward from the bottom wall;
a mark formed on the upper end of the side wall and indicating an intermediate position of the cam surface ;
The inkjet printer, wherein the protruding portion is disposed below the bottom wall.