JP2006231547A - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

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JP2006231547A
JP2006231547A JP2005045511A JP2005045511A JP2006231547A JP 2006231547 A JP2006231547 A JP 2006231547A JP 2005045511 A JP2005045511 A JP 2005045511A JP 2005045511 A JP2005045511 A JP 2005045511A JP 2006231547 A JP2006231547 A JP 2006231547A
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moving
image forming
carriage
forming apparatus
force transmitting
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JP4508903B2 (en
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Shingo Masaoka
心吾 正岡
Tsuneo Maki
恒雄 牧
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the accuracy of a position of a carriage cannot be maintained because a guiding material for guiding the carriage is bent when great acceleration is applied to a connecting part between the carriage and a timing belt during acceleration and halt. <P>SOLUTION: This image forming apparatus comprises a moving-force transmission member 6 which is slidably held by a guide rod 5 provided along the moving direction of the carriage 4 slidably held by guide rods 2 and 3, and which has moving-force transmission parts 6a and 6b abutting on the carriage 4 in such a manner as to be displaceable in a direction different from the moving direction. The member 6 is moved by the timing belt 15, and only the moving force in the moving direction, which is transmitted by the member 6, is transmitted to the carriage 4 via the transmission parts 6a and 6b, so that the carriage 4 can be moved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は画像形成装置に関し、特に画像形成手段を走査して画像を形成する画像形成装置に関する。   The present invention relates to an image forming apparatus, and more particularly to an image forming apparatus that scans an image forming unit to form an image.

プリンタ、ファクシミリ、複写装置、プロッタ、プリンタ／ファックス／複写機複合機等の各種画像形成装置としては、記録液（例えばインク）の液滴を吐出する液体吐出ヘッドで構成した記録ヘッドをキャリッジに搭載して、このキャリッジを被記録媒体（以下「用紙」ともいうが、材質を紙に限定するものではなく、また、記録材、被記録材、記録媒体、記録紙、転写材などとも称されるものを含む。）の搬送方向に対して直交する方向にシリアルスキャン（主走査）させるとともに、用紙を記録幅に応じて間歇的に搬送し、搬送と記録を交互に繰り返すことによって用紙に画像を形成（記録、印刷、印字、印写も同義で使用する。）するシリアル型画像形成装置がある。   As various image forming apparatuses such as printers, facsimiles, copying machines, plotters, printer / fax / copier multifunction machines, etc., a recording head composed of a liquid discharging head that discharges recording liquid (for example, ink) droplets is mounted on the carriage. The carriage is also referred to as a recording medium (hereinafter referred to as “paper”, but the material is not limited to paper, and is also referred to as recording material, recording material, recording medium, recording paper, transfer material, etc.) Serial scanning (main scanning) in a direction orthogonal to the conveyance direction), the sheet is intermittently conveyed according to the recording width, and the image is printed on the sheet by alternately repeating conveyance and recording. There is a serial type image forming apparatus for forming (recording, printing, printing, and printing are also used synonymously).

このような画像形成装置において、画像形成手段としての記録ヘッドを搭載した移動体としてのキャリッジを主走査方向に移動させる主走査駆動機構としては、特許文献１に記載されているように、駆動モータで回転する駆動プーリとアイドラプーリの間に、主走査方向に沿って張り渡されたタイミングベルト（歯付きベルト）に、キャリッジの一部を結合したものが知られている。
特開平９−３００７６６号公報 In such an image forming apparatus, as a main scanning drive mechanism for moving a carriage as a moving body mounted with a recording head as an image forming unit in the main scanning direction, as described in Patent Document 1, a drive motor is described. It is known that a part of a carriage is coupled to a timing belt (toothed belt) stretched along a main scanning direction between a driving pulley and an idler pulley that rotate in the above.
JP-A-9-300766

このような主走査駆動機構において、キャリッジの回転を防止するために、特許文献２には記録ヘッド及びキャリッジがその合成重心位置を貫く位置において案内部材に支持されているようにすることが、特許文献３にはベルト類がキャリッジの駆動負荷のほぼ中心部を通ってキャリッジと連結されているようにしたものが記載されている。
特開平６−２６２８１６号公報 特開２０００−１７７１９３号公報 In such a main scanning drive mechanism, in order to prevent the carriage from rotating, Patent Document 2 discloses that the recording head and the carriage are supported by the guide member at a position passing through the combined center of gravity. Document 3 describes a belt that is connected to the carriage through almost the center of the driving load of the carriage.
JP-A-6-262816 JP 2000-177193 A

しかしながら、上述したような主走査駆動機構にあっては、キャリッジとタイミングベルトとの間の連結部（結合部）に移動力が加わると、特に、加速時及び停止時に大きな加速度が加わると、キャリッジとキャリッジを案内する案内部材との間において、キャリッジの移動方向以外の力が発生して、キャリッジを支持する案内部材を撓ませ、これによって、キャリッジが目標とする位置とずれて往復移動し、液滴の着弾位置がずれて画像品質が劣化するという課題がある。   However, in the main scanning drive mechanism as described above, when a moving force is applied to the connecting portion (connecting portion) between the carriage and the timing belt, particularly when a large acceleration is applied during acceleration and stopping, the carriage And a guide member that guides the carriage, a force other than the movement direction of the carriage is generated to bend the guide member that supports the carriage, thereby causing the carriage to reciprocate away from the target position, There is a problem that the landing position of the droplet is shifted and the image quality is deteriorated.

本発明は上記の課題に鑑みてなされたものであり、移動体に対して加速時や停止時に移動方向以外の力が作用して画像品質が劣化することを防止した画像形成装置を提供することを目的とする。   The present invention has been made in view of the above problems, and provides an image forming apparatus that prevents the image quality from deteriorating due to a force other than the moving direction acting on the moving body during acceleration or stopping. With the goal.

上記の課題を解決するため、本発明に係る画像形成装置は、移動体の移動方向に沿って設けたガイド部材に摺動自在に保持され、移動体に対して移動方向とは異なる方向に変位可能に当接する移動力伝達部を有する移動力伝達部材を備え、移動体に対する移動力を、移動力伝達部材を介して移動体に伝達する構成とした。   In order to solve the above problems, an image forming apparatus according to the present invention is slidably held by a guide member provided along a moving direction of a moving body, and is displaced in a direction different from the moving direction with respect to the moving body. A moving force transmitting member having a moving force transmitting portion that comes into contact with the moving body is provided, and the moving force with respect to the moving body is transmitted to the moving body via the moving force transmitting member.

ここで、移動力伝達部材の移動力伝達部が移動体に伝達する移動力の作用点が、移動体の移動方向における移動体の自重による重心軸上とほぼ一致していることが好ましい。また、移動力伝達部材の移動力伝達部は１箇所であることが好ましい。さらに、移動体及び移動力伝達部材の少なくともいずれかは、案内部材又はガイド部材に対して載置された状態で保持されていることが好ましい。また、移動体と移動力伝達部材の移動力伝達部との間には緩衝部材を介在していることが好ましい。   Here, it is preferable that the action point of the moving force transmitted to the moving body by the moving force transmitting portion of the moving force transmitting member substantially coincides with the center of gravity axis due to the weight of the moving body in the moving direction of the moving body. Moreover, it is preferable that the moving force transmission part of a moving force transmission member is one place. Furthermore, it is preferable that at least one of the moving body and the moving force transmission member is held in a state of being placed on the guide member or the guide member. Moreover, it is preferable that a buffer member is interposed between the moving body and the moving force transmitting portion of the moving force transmitting member.

本発明に係る画像形成装置によれば、移動体の移動方向に沿って設けたガイド部材に摺動自在に保持され、移動体に対して移動方向とは異なる方向に変位可能に当接する移動力伝達部を有する移動力伝達部材を備え、移動体に対する移動力を、移動力伝達部材を介して移動体に伝達するので、移動体に対して加速時や停止時に移動方向以外の方向の力が作用することを防止できて、画像品質が向上する。   According to the image forming apparatus of the present invention, the moving force that is slidably held by the guide member provided along the moving direction of the moving body and contacts the moving body so as to be displaceable in a direction different from the moving direction. A moving force transmission member having a transmission portion is provided, and the moving force with respect to the moving body is transmitted to the moving body via the moving force transmission member. It can be prevented from acting, and the image quality is improved.

以下、本発明の実施の形態について添付図面を参照して説明する。まず、本発明の第１実施形態に係る画像形成装置について図１ないし図３を参照して説明する。なお、図１は同画像形成装置の主走査部の平面説明図、図２は同じく側面説明図、図３は同じく背面説明図である。   Embodiments of the present invention will be described below with reference to the accompanying drawings. First, an image forming apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 is an explanatory plan view of the main scanning portion of the image forming apparatus, FIG. 2 is an explanatory side view, and FIG. 3 is an explanatory back view.

この画像形成装置は、側板１Ａ、１Ｂ間に、被記録媒体の搬送方向（副走査方向）と直交する方向（主走査方向）に案内部材である２本のガイドロッド２、３を横架し、これらのガイドロッド２、３に、画像形成手段である液体吐出ヘッドで構成した複数の記録ヘッド１０を搭載した移動体であるキャリッジ４を主走査方向（図で上下方向）に摺動自在に保持している。   In this image forming apparatus, two guide rods 2 and 3 that are guide members are horizontally mounted between side plates 1A and 1B in a direction (main scanning direction) orthogonal to a recording medium conveyance direction (sub-scanning direction). The carriage 4, which is a moving body, on which a plurality of recording heads 10 constituted by liquid ejection heads as image forming means are mounted on these guide rods 2, 3 is slidable in the main scanning direction (vertical direction in the figure). keeping.

このキャリッジ４にはガイドロッド２、３が挿通するガイドブッシュ４Ａ、４Ｂを取り付けている。つまり、キャリッジ４を主走査方向に貫通する穴を形成し、この穴内に軸受部材であるガイドブッシュ４Ａ、４Ｂを嵌め込み（通常は端面から１０ｍｍ程度の幅を有している）、ガイドブッシュ４Ａ、４Ａ間、４Ｂ、４Ｂ間はガイドロッド２、３と接触しないように空間を十分取り、軸受部材の部分のみでガイドロッド２、３と接触する構成としている。   Guide bushes 4A and 4B through which the guide rods 2 and 3 are inserted are attached to the carriage 4. That is, a hole penetrating the carriage 4 in the main scanning direction is formed, and guide bushes 4A and 4B, which are bearing members, are fitted into the holes (usually having a width of about 10 mm from the end surface). Between 4A, 4B and 4B, a sufficient space is provided so as not to contact the guide rods 2 and 3, and the guide rods 2 and 3 are contacted only by the bearing member.

また、側板１Ａ、１Ｂに横架したガイド部材であるガイドロッド５にキャリッジ４の移動方向に沿って移動力伝達部材６を摺動自在に保持している。この移動力伝達部材６には、キャリッジ４を主走査方向の両側で挟み込むように移動力伝達部６a、６ｂを設け、移動力伝達部６a、６ｂは移動方向（主走査方向）以外の方向では移動体に対して変位可能に当接させている。   Further, a moving force transmission member 6 is slidably held along a moving direction of the carriage 4 on a guide rod 5 which is a guide member horizontally mounted on the side plates 1A and 1B. The moving force transmitting member 6 is provided with moving force transmitting portions 6a and 6b so as to sandwich the carriage 4 on both sides in the main scanning direction, and the moving force transmitting portions 6a and 6b are in directions other than the moving direction (main scanning direction). The movable body is in contact with the movable body so as to be displaceable.

一方、後板（又は前板）１Ｃの主走査方向の一方側端部付近には駆動モータ（主走査モータ）１１を取り付け、この駆動モータ１１の軸に取り付けた駆動プーリ１２と、後板（又は前板）１Ｃの主走査方向の他方側端部付近に回転自在に軸支し、ばね部材１４によってテンションを掛けた従動プーリ１３との間に、主走査方向に沿って周回するタイミングベルト１５を張架している。   On the other hand, a driving motor (main scanning motor) 11 is attached to the vicinity of one end of the rear plate (or front plate) 1C in the main scanning direction, and a driving pulley 12 attached to the shaft of the driving motor 11 and a rear plate ( Or a front belt) A timing belt 15 that is rotatably supported in the vicinity of the other side end of the main scanning direction 1C and circulates along the main scanning direction between the driven pulley 13 that is tensioned by the spring member 14. Is stretched.

そして、移動力伝達部材６の移動力伝達部６ａとは反対側に設けた連結部６ｂにタイミングベルト１５を連結結合し、駆動モータ１１を回転駆動することによってタイミングベルト１５を介して移動力伝達部材６が主走査方向に移動するようにしている。   Then, the timing belt 15 is connected and coupled to the connecting portion 6b provided on the opposite side of the moving force transmitting member 6 from the moving force transmitting portion 6a, and the driving motor 11 is rotationally driven to transmit the moving force via the timing belt 15. The member 6 is moved in the main scanning direction.

また、側板１Ａと１Ｂとの間にはキャリッジ４の主走査方向位置を検出するために、リニアスケール１７を主走査方向に平行に配設している。このリニアスケール１７の側板１Ａ側にはバネ部材１８を設けて、常に張力が働いてリニアスケール１７が張られた状態を保つようにしている。このエンコーダ１１は、透明のフィルムに図３に示すように主走査方向と垂直になるように黒い細いライン１７ａを等間隔で形成したものである。   A linear scale 17 is disposed between the side plates 1A and 1B in parallel to the main scanning direction in order to detect the position of the carriage 4 in the main scanning direction. A spring member 18 is provided on the side of the linear scale 17 on the side plate 1A so that tension is always applied to keep the linear scale 17 stretched. The encoder 11 is a transparent film in which thin black lines 17a are formed at equal intervals so as to be perpendicular to the main scanning direction as shown in FIG.

そして、キャリッジ４側にはリニアスケール１７のライン１７ａを検出するフォトセンサなどからなるエンコーダセンサ１９を設けている。これらのリニアスケール１７とエンコーダセンサ１９によってキャリッジ４の主走査方向位置を検出するためのリニアエンコーダを構成している。   On the carriage 4 side, an encoder sensor 19 including a photo sensor for detecting the line 17a of the linear scale 17 is provided. These linear scale 17 and encoder sensor 19 constitute a linear encoder for detecting the position of the carriage 4 in the main scanning direction.

このように構成した画像形成装置において、駆動モータ１１はリニアエンコーダを構成するエンコーダセンサ１９で検出されたキャリッジ４の位置情報に基づいて回転駆動され、正転と逆転を所定量繰り返す。この駆動モータ１１の回転によって駆動プーリ１２が回転し、タイミングベルト１５が図３に示すように主走査方向（矢示方向）に往復移動することによって、タイミングベルト１５に連結されている移動力伝達部材６も連動して主走査方向に往復移動する。   In the image forming apparatus configured as described above, the drive motor 11 is rotationally driven based on the position information of the carriage 4 detected by the encoder sensor 19 constituting the linear encoder, and repeats forward rotation and reverse rotation by a predetermined amount. The driving pulley 12 is rotated by the rotation of the driving motor 11, and the timing belt 15 reciprocates in the main scanning direction (arrow direction) as shown in FIG. The member 6 also reciprocates in the main scanning direction in conjunction with it.

この移動力伝達部材６が主走査方向に往復移動することによって移動力伝達部６aがキャリッジ４に移動力を伝達し、キャリッジ４は移動力伝達部材６に同期して主走査方向に往復移動することになる。   As the moving force transmitting member 6 reciprocates in the main scanning direction, the moving force transmitting portion 6a transmits the moving force to the carriage 4, and the carriage 4 reciprocates in the main scanning direction in synchronization with the moving force transmitting member 6. It will be.

ここで、移動力伝達部材６は、停止状態から動作状態、又は動作状態から停止状態に移行するとき、例えば、図１に示すように連結部６ｃに力Ｆａが発生する。これにより、移動力伝達部材６の両端に力Ｆｂと力Ｆｃが発生し、ガイドロッド５をたわませる力が働くことになる。   Here, when the moving force transmission member 6 shifts from the stopped state to the operating state or from the operating state to the stopped state, for example, a force Fa is generated in the connecting portion 6c as shown in FIG. As a result, the force Fb and the force Fc are generated at both ends of the moving force transmitting member 6, and a force for bending the guide rod 5 acts.

このとき、移動力伝達部材６の移動力伝達部６ａ、６ｂとキャリッジ４とは移動方向以外の方向に変位可能（摺動可能）に接触しているだけであるので、力Ｆｂと力Ｆｃはキャリッジ４には直接伝わらず、滑って逃げてしまい、キャリッジ４には移動方向以外の力は作用しないことになる。   At this time, since the moving force transmitting portions 6a and 6b of the moving force transmitting member 6 and the carriage 4 are only in contact with each other so as to be displaceable (slidable) in directions other than the moving direction, the forces Fb and Fc are Instead of being transmitted directly to the carriage 4, it slips away and no force other than the moving direction acts on the carriage 4.

したがって、移動力伝達部材６の移動によってはガイドロッド２、３を撓ませる力が発生せず、キャリッジ４は目標とする位置を移動し、記録ヘッド１０から吐出する液滴の着弾位置ズレが防止されるので、画像品質が劣化することを防止できる。   Therefore, the movement of the moving force transmission member 6 does not generate a force that bends the guide rods 2 and 3, and the carriage 4 moves to a target position, thereby preventing the landing position deviation of the droplets discharged from the recording head 10. Therefore, it is possible to prevent the image quality from deteriorating.

このように、移動体の移動方向に沿って設けたガイド部材に摺動自在に保持され、移動体に対して移動方向とは異なる方向に変位可能に当接する移動力伝達部を有する移動力伝達部材を備え、移動体に対する移動力を、移動力伝達部材を介して移動体に伝達するので、移動体に対して加速時や停止時に移動方向以外の方向の力が作用することを防止できて、画像品質が向上する。   As described above, the moving force transmission having the moving force transmitting portion that is slidably held by the guide member provided along the moving direction of the moving body and abuts the moving body so as to be displaceable in a direction different from the moving direction. Since the moving force for the moving body is transmitted to the moving body via the moving force transmission member, it is possible to prevent the force in the direction other than the moving direction from acting on the moving body when accelerating or stopping. , Improve the image quality.

次に、本発明の第２実施形態に係る画像形成装置について図４及び図５を参照して説明する。なお、図４は同画像形成装置の主走査部の平面説明図、図５は同じく側面説明図である。
この実施形態では、移動力伝達部材６の移動力伝達部６ａ、６ｂによるキャリッジ４を移動させるための移動力の作用点を、図４に示すように、キャリッジ４の自重における重心軸上と一致させるようにしている。 Next, an image forming apparatus according to a second embodiment of the present invention will be described with reference to FIGS. 4 is an explanatory plan view of the main scanning unit of the image forming apparatus, and FIG. 5 is an explanatory side view.
In this embodiment, the action point of the moving force for moving the carriage 4 by the moving force transmitting portions 6a and 6b of the moving force transmitting member 6 coincides with the center of gravity axis on the weight of the carriage 4 as shown in FIG. I try to let them.

すなわち、キャリッジ４を移動させるときに、重心軸上以外に移動力を作用させた場合、図４に示すように、慣性力Ｆｄがキャリッジ４の重心に働き、キャリッジ４の各軸受部（ガイドブッシュ４Ａ、４Ｂの部分）には力Ｆｅ、Ｆｆ、Ｆｇ、Ｆｈが発生し、ガイドロッド２、３が撓み、キャリッジ４は目標とする位置からずれて移動し、画像が劣化することになる。   That is, when a moving force is applied to the carriage 4 other than on the center of gravity axis, the inertial force Fd acts on the center of gravity of the carriage 4 as shown in FIG. 4A and 4B), forces Fe, Ff, Fg, and Fh are generated, the guide rods 2 and 3 are deflected, and the carriage 4 is shifted from the target position to deteriorate the image.

これに対して、この実施形態のように、キャリッジ４を移動させる移動力をキャリッジ４の重心軸上に作用させることで、移動方向以外の力Ｆｅ、Ｆｆ、Ｆｇ、Ｆｈは発生せず、キャリッジ４を目標とする位置に移動でき、画像が劣化するのを防止することができる。   On the other hand, as in this embodiment, by applying a moving force for moving the carriage 4 on the center of gravity axis of the carriage 4, forces Fe, Ff, Fg, Fh other than the moving direction are not generated, and the carriage 4 can be moved to a target position, and deterioration of the image can be prevented.

次に、本発明の第３実施形態に係る画像形成装置について図６を参照して説明する。なお、図６は同画像形成装置の主走査部の平面説明図である。
この実施形態では、移動力伝達部材６は、片側の移動力伝達部６ｂを排して、更にガイドロッド５との係合部分を主走査方向で短くし、主走査方向での小型化を図っている。 Next, an image forming apparatus according to a third embodiment of the present invention will be described with reference to FIG. FIG. 6 is an explanatory plan view of the main scanning unit of the image forming apparatus.
In this embodiment, the moving force transmitting member 6 eliminates the moving force transmitting portion 6b on one side and further shortens the engaging portion with the guide rod 5 in the main scanning direction, thereby reducing the size in the main scanning direction. ing.

この場合、キャリッジ４を移動させる移動力は片方向にしか働かなくなるため、移動力伝達部６ａの先端は、図６に示すように鍵状部６ｄとし、キャリッジ４側にも同じく鍵状の突起部４ａを設けて、鍵状部６ｄと突起部４ａとが引っ掛かるようにしている。また、移動力伝達部６ａの先端部の鍵状部６ｄとキャリッジ４の側面とは接触して摺動可能となっており、隙間Ｌを設けることで、移動力伝達部材６が加速時もしくは停止時に傾いたときでも、キャリッジ４には移動方向以外の力が発生しないようにしている。   In this case, since the moving force for moving the carriage 4 works only in one direction, the tip of the moving force transmitting portion 6a is a key-like portion 6d as shown in FIG. The part 4a is provided so that the key-like part 6d and the protrusion 4a are hooked. Further, the key-like portion 6d at the tip of the moving force transmitting portion 6a and the side surface of the carriage 4 are slidable in contact with each other, and by providing a gap L, the moving force transmitting member 6 is accelerated or stopped. Even when tilted, the carriage 4 does not generate any force other than the moving direction.

次に、本発明の第４実施形態に係る画像形成装置について図７を参照して説明する。なお、図７は同画像形成装置の主走査部の平面説明図である。
この実施形態では、移動力伝達部材６の移動方向の略中央部に移動力伝達部６ｅを設け、キャリッジ４側には背面部側に切り欠き部４ｂを形成し、この切り欠き部４ｂに移動力伝達部６ｅを移動方向以外の方向に変位可能に嵌め込んでいる。これによって、第３実施形態よりも更に小型化することができる。 Next, an image forming apparatus according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 7 is an explanatory plan view of the main scanning unit of the image forming apparatus.
In this embodiment, the moving force transmitting member 6 is provided with a moving force transmitting portion 6e at a substantially central portion in the moving direction, a notch portion 4b is formed on the back surface side on the carriage 4 side, and the moving portion is moved to the notched portion 4b. The force transmitting portion 6e is fitted so as to be displaceable in a direction other than the moving direction. As a result, the size can be further reduced as compared with the third embodiment.

次に、本発明の第５実施形態に係る画像形成装置について図８を参照して説明する。なお、図８は同画像形成装置の主走査部の側面説明図である。
この実施形態では、キャリッジ４に半円状のガイドブッシュ２４Ａ、２４Ｂを設けて、この半円状のガイドブッシュ２４Ａ、２４Ｂをガイドロッド２、３上に載置してキャリッジ４を保持することにより、キャリッジ４を上方に持ち上げるだけでガイドロッド２、３から取り外せるようにしている。また、移動力伝達部材６にも半円状のガイドブッシュ２６Ａを設けて、この半円状のガイドブッシュ２６Ａをガイドロッド５上に載置して移動力伝達部材６を保持することにより、移動力伝達部材６を上方に持ち上げるだけでガイドロッド５から取り外せるようにしている。 Next, an image forming apparatus according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 8 is an explanatory side view of the main scanning unit of the image forming apparatus.
In this embodiment, the carriage 4 is provided with semicircular guide bushes 24A and 24B, and the semicircular guide bushes 24A and 24B are placed on the guide rods 2 and 3 to hold the carriage 4. The guide rods 2 and 3 can be removed simply by lifting the carriage 4 upward. Further, the moving force transmission member 6 is provided with a semicircular guide bush 26A, and the semicircular guide bush 26A is placed on the guide rod 5 to hold the moving force transmission member 6, thereby moving the movement force transmission member 6. The force transmission member 6 can be removed from the guide rod 5 simply by lifting it upward.

このように構成することで、これにより、メンテナンスや交換が容易に行える。   With this configuration, it is possible to easily perform maintenance and replacement.

次に、本発明の第６実施形態に係る画像形成装置について図９を参照して説明する。なお、図９は同画像形成装置の主走査部の平面説明図である。
この実施形態では、移動力伝達部材６の移動力伝達部６ａ、６ｂにはキャリッジ４の側面に接触する弾性体、例えば、ゴムやスポンジやバネ（バネは板バネやつる巻バネ、特に、ゴムは減衰特性が優れており最適である。）などで形成した緩衝部材２１を設けている。これにより、キャリッジ４への加速時及び停止時の衝撃力を緩衝、吸収させることができる。 Next, an image forming apparatus according to a sixth embodiment of the present invention will be described with reference to FIG. FIG. 9 is an explanatory plan view of the main scanning unit of the image forming apparatus.
In this embodiment, the moving force transmitting portions 6a and 6b of the moving force transmitting member 6 include elastic bodies such as rubber, sponge, and spring (the spring is a leaf spring, a helical spring, especially rubber). Is excellent in damping characteristics and is optimal. Thereby, the impact force at the time of acceleration and stop to the carriage 4 can be buffered and absorbed.

次に、本発明の第７実施形態に係る画像形成装置について図１０を参照して説明する。なお、図１０は同画像形成装置の主走査部の平面説明図である。
この実施形態では、前述した図７に示す第４実施形態の移動力伝達部材６の移動力伝達部６ｅと切り欠き部４ｂの少なくとも主走査方向両側面との間に、ゴムなどの弾性体からなる緩衝部材２２を設けている。 Next, an image forming apparatus according to a seventh embodiment of the present invention will be described with reference to FIG. FIG. 10 is an explanatory plan view of the main scanning unit of the image forming apparatus.
In this embodiment, an elastic body such as rubber is used between the moving force transmitting portion 6e of the moving force transmitting member 6 of the fourth embodiment shown in FIG. 7 and at least both side surfaces in the main scanning direction of the notch portion 4b. The buffer member 22 is provided.

この場合、緩衝部材２２はキャップ形状又は中空の円筒状に形成して移動力伝達部６ｅの外周部に嵌め込むようにすれば、取り付け作業が容易になる。   In this case, if the buffer member 22 is formed in a cap shape or a hollow cylindrical shape and is fitted into the outer peripheral portion of the moving force transmitting portion 6e, the mounting operation is facilitated.

次に、本発明の第８実施形態に係る画像形成装置について図１１を参照して説明する。なお、図１１は同画像形成装置の主走査部の平面説明図である。
この実施形態では、前述した図６に示す第３実施形態と同様に、移動力伝達部材６に片側の移動力伝達部６ａだけを設けるとともに、この移動力伝達部６ａのキャリッジ４側の面にゴムなどの弾性体からなる緩衝部材２３を接着やネジ止め、はめ込みなどで固定している。そして、緩衝部材２３のキャリッジ４側をフランジ部２３ａとして、キャリッジ４側には緩衝部材２３のフランジ部２３ａが嵌まり込む切り欠き部を形成して、主走査方向のいずれの方向についてもキャリッジ４に移動力を伝達できるようにしている。 Next, an image forming apparatus according to an eighth embodiment of the present invention will be described with reference to FIG. FIG. 11 is an explanatory plan view of the main scanning unit of the image forming apparatus.
In this embodiment, as in the third embodiment shown in FIG. 6 described above, only the moving force transmitting portion 6a on one side is provided on the moving force transmitting member 6, and the surface of the moving force transmitting portion 6a on the carriage 4 side is provided. A buffer member 23 made of an elastic material such as rubber is fixed by bonding, screwing, or fitting. Then, the carriage 4 side of the buffer member 23 is used as a flange portion 23a, and a notch portion into which the flange portion 23a of the buffer member 23 is fitted is formed on the carriage 4 side, so that the carriage 4 can be used in any direction of the main scanning direction. The movement force can be transmitted to the.

なお、本発明はプリンタ構成の画像形成装置に限らず、複写装置、ファクシミリ装置、複写装置／プリンタ／ファクシミリ装置の複合機などの画像形成装置にも適用することができる。   The present invention can be applied not only to an image forming apparatus having a printer configuration but also to an image forming apparatus such as a copying machine, a facsimile machine, and a copier / printer / facsimile machine composite machine.

本発明の第１実施形態に係る画像形成装置の主走査部の平面説明図である。FIG. 2 is an explanatory plan view of a main scanning unit of the image forming apparatus according to the first embodiment of the present invention. 同じく側面説明図である。It is a side explanatory view similarly. 同じく正面説明図である。It is front explanatory drawing similarly. 本発明の第２実施形態に係る画像形成装置の主走査部の平面説明図である。FIG. 6 is an explanatory plan view of a main scanning unit of an image forming apparatus according to a second embodiment of the present invention. 同じく側面説明図である。It is a side explanatory view similarly. 本発明の第３実施形態に係る画像形成装置の主走査部の平面説明図である。FIG. 10 is an explanatory plan view of a main scanning unit of an image forming apparatus according to a third embodiment of the present invention. 本発明の第４実施形態に係る画像形成装置の主走査部の平面説明図である。FIG. 10 is an explanatory plan view of a main scanning unit of an image forming apparatus according to a fourth embodiment of the present invention. 本発明の第５実施形態に係る画像形成装置の主走査部の側面説明図であるFIG. 10 is an explanatory side view of a main scanning unit of an image forming apparatus according to a fifth embodiment of the present invention. 本発明の第６実施形態に係る画像形成装置の主走査部の平面説明図である。FIG. 14 is an explanatory plan view of a main scanning unit of an image forming apparatus according to a sixth embodiment of the present invention. 本発明の第７実施形態に係る画像形成装置の主走査部の平面説明図である。FIG. 10 is an explanatory plan view of a main scanning unit of an image forming apparatus according to a seventh embodiment of the present invention. 本発明の第８実施形態に係る画像形成装置の主走査部の平面説明図である。It is a plane explanatory view of the main scanning part of the image forming apparatus concerning an 8th embodiment of the present invention.

符号の説明Explanation of symbols

１Ａ、１Ｂ…側板
１Ｃ…後板
２、３…ガイドロッド
４…キャリッジ
５…ガイドロッド
６…移動力伝達部材
６ａ、６ｂ、６ｅ…移動力伝達部
１０…記録ヘッド
１１…主走査モータ（駆動モータ）
１２…駆動プーリ
１３…従動プーリ
１４…ばね部材
１５…タイミングベルト
１７…リニアスケール
１８…バネ部材
１９…エンコーダセンサ DESCRIPTION OF SYMBOLS 1A, 1B ... Side plate 1C ... Rear plate 2, 3 ... Guide rod 4 ... Carriage 5 ... Guide rod 6 ... Movement force transmission member 6a, 6b, 6e ... Movement force transmission part 10 ... Recording head 11 ... Main scanning motor (drive motor) )
DESCRIPTION OF SYMBOLS 12 ... Drive pulley 13 ... Driven pulley 14 ... Spring member 15 ... Timing belt 17 ... Linear scale 18 ... Spring member 19 ... Encoder sensor

Claims (5)

被記録媒体を搬送する方向と直交する方向に配設した案内部材に前記被記録媒体に画像を形成する画像形成手段を備えた移動体を摺動自在に保持し、前記移動体を前記案内部材に沿って移動させながら画像を形成する画像形成装置において、
前記移動体の移動方向に沿って設けたガイド部材に摺動自在に保持され、前記移動体に対して移動方向とは異なる方向に変位可能に当接する移動力伝達部を有する移動力伝達部材を備え、前記移動体に対する移動力を、前記移動力伝達部材を介して前記移動体に伝達することを特徴とする画像形成装置。 A moving member provided with image forming means for forming an image on the recording medium is slidably held on a guide member disposed in a direction orthogonal to the direction in which the recording medium is conveyed, and the moving member is held by the guide member. In an image forming apparatus that forms an image while moving along
A moving force transmitting member having a moving force transmitting portion that is slidably held by a guide member provided along a moving direction of the moving body and abuts displaceably in a direction different from the moving direction with respect to the moving body. And an image forming apparatus for transmitting a moving force to the moving body to the moving body via the moving force transmitting member. 請求項１に記載の画像形成装置において、前記移動力伝達部材の移動力伝達部が前記移動体に伝達する移動力の作用点が、前記移動体の移動方向における移動体の自重による重心軸上とほぼ一致していることを特徴とする画像形成装置。   2. The image forming apparatus according to claim 1, wherein an action point of the moving force transmitted to the moving body by the moving force transmitting portion of the moving force transmitting member is on the center of gravity axis due to the weight of the moving body in the moving direction of the moving body. And an image forming apparatus characterized by substantially matching the same. 請求項１又は２に記載の画像形成装置において、前記移動力伝達部材の移動力伝達部が１箇所であることを特徴とする画像形成装置。   3. The image forming apparatus according to claim 1, wherein the moving force transmitting member has one moving force transmitting portion. 4. 記請求項１ないし３のいずれかに記載の画像形成装置において、前記移動体及び移動力伝達部材の少なくともいずれかは、前記案内部材又はガイド部材に対して載置された状態で保持されていることを特徴とする画像形成装置。   4. The image forming apparatus according to claim 1, wherein at least one of the moving body and the moving force transmission member is held in a state of being placed on the guide member or the guide member. An image forming apparatus. 請求項１ないし４のいずれかに記載の画像形成装置において、前記移動体と移動力伝達部材の移動力伝達部との間には緩衝部材を介在していることを特徴とする画像形成装置。
5. The image forming apparatus according to claim 1, wherein a buffer member is interposed between the moving body and the moving force transmitting portion of the moving force transmitting member.
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JP2007168084A (en) * 2005-12-19 2007-07-05 Brother Ind Ltd Scanner
JP2014030965A (en) * 2012-08-03 2014-02-20 Seiko Epson Corp Recording device
US11467272B2 (en) 2014-10-30 2022-10-11 Koninklijke Philips N.V. Compressive sensing in forming ultrasound images
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JP2003266850A (en) * 2002-03-20 2003-09-25 Seiko Epson Corp Carriage fitting device and recording apparatus fitted therewith
JP2004230798A (en) * 2003-01-31 2004-08-19 Canon Inc Serial device
JP2004268337A (en) * 2003-03-06 2004-09-30 Seiko Epson Corp Liquid ejector

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JPH02130176A (en) * 1988-11-10 1990-05-18 Matsushita Electric Ind Co Ltd Serial printer
JP2002144659A (en) * 2000-11-15 2002-05-22 Seiko Epson Corp Carriage attaching device and recording apparatus
JP2003266850A (en) * 2002-03-20 2003-09-25 Seiko Epson Corp Carriage fitting device and recording apparatus fitted therewith
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JP2007168084A (en) * 2005-12-19 2007-07-05 Brother Ind Ltd Scanner
US7946677B2 (en) 2005-12-19 2011-05-24 Brother Kogyo Kabushiki Kaisha Reciprocating apparatus, and printer including reciprocating apparatus
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US11939715B2 (en) 2018-12-28 2024-03-26 Ricoh Company, Ltd. Liquid discharge device, liquid discharge apparatus, and dyeing apparatus

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