JPS63173676A - Carriage carrying device - Google Patents
Carriage carrying deviceInfo
- Publication number
- JPS63173676A JPS63173676A JP581287A JP581287A JPS63173676A JP S63173676 A JPS63173676 A JP S63173676A JP 581287 A JP581287 A JP 581287A JP 581287 A JP581287 A JP 581287A JP S63173676 A JPS63173676 A JP S63173676A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- drive
- carriage
- recording
- drive pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006866 deterioration Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はシリアル型の記録装置において、記録ヘッドを
搭載したキャリッジを往復動させるためのキャリッジ搬
送装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a carriage conveying device for reciprocating a carriage on which a recording head is mounted in a serial type recording apparatus.
（従来の技術〕
記録装置にはプリンタやファクシミリがあり、記録ヘッ
ドに設けた複数のドツト形成素子を画像データ等の記録
情報に基づいて駆動し、記録シート（記録用紙、プラス
チック薄板等の記録媒体）上にドツトパターンを形成す
る構成が用いられている。(Prior Art) Recording devices include printers and facsimile machines, in which multiple dot forming elements provided in a recording head are driven based on recording information such as image data, and a recording sheet (recording paper, a recording medium such as a thin plastic plate) is driven. ) is used in which a dot pattern is formed on the surface.
この種記録装置の記録型式としては、記録ヘッドを記録
シートの搬送方向に直交する方向（幅方向）に移動させ
ながら記録するシリアル型、１行分まとめて記録するラ
インプリント型および１頁分をまとめて記録するページ
プリント型などがある。The recording formats of this type of recording device include a serial type that records while moving the recording head in the direction (width direction) perpendicular to the conveyance direction of the recording sheet, a line print type that records one line at a time, and a line print type that records one line at a time. There are page print types that record all at once.
本発明はシリアル型の記録装置において、記録ヘッドを
搭載したキャリッジを記録領域で往復させるキャリッジ
搬送装置を対象とする。The present invention is directed to a carriage conveying device for reciprocating a carriage carrying a print head in a print area in a serial type printing apparatus.
第３図は従来のキャリッジ搬送装置を示す斜視図である
。FIG. 3 is a perspective view showing a conventional carriage conveyance device.
記録シー）１は不図示の駆動機構により所定のタイミン
グで回転駆動されるプラテン２によってＹ方向に搬送さ
れる。このプラテン２に間隔をもって或いは記録シート
１を介して圧接可能に記録ヘッド（サーマルヘッド、イ
ンクジェットヘッド、ワイヤドツト式ヘッド等）３が配
設され、このヘッド３はキャリッジ４に搭載されている
。キャリッジ４はプラテン２に平行配設された一対のガ
イド軸５に支持され、該ガイド軸５に沿って水平移動す
ることができる。ガイド軸５の下部には、該ガイド軸５
に平行して無端の駆動ベルト６が配設され、この駆動ベ
ルト６０両端は、駆動プーリ７及び従動プーリ８の各々
に張架され、駆動プーリ７の回転によって駆動ベルト６
が回転する。駆動ベルト６０所定位置にキャリッジ４が
係着され、駆動ベルト６の回転と共にキャリッジ４が移
動する。駆動プーリ７は駆動モータ９の回転軸に軸着さ
れ、駆動モータ９の回転に応じて駆動ベルト６が移動す
ると共に、駆動モータ９の回転が逆転することによって
駆動ベルト６は移動方向を反転する。The recording sheet 1 is conveyed in the Y direction by a platen 2 which is rotationally driven at a predetermined timing by a drive mechanism (not shown). A recording head (thermal head, ink jet head, wire dot type head, etc.) 3 is disposed on the platen 2 at intervals or in pressure contact with the recording sheet 1, and this head 3 is mounted on a carriage 4. The carriage 4 is supported by a pair of guide shafts 5 arranged parallel to the platen 2, and can move horizontally along the guide shafts 5. At the lower part of the guide shaft 5, the guide shaft 5
An endless drive belt 6 is disposed in parallel with the drive belt 6, and both ends of the drive belt 60 are stretched around each of a drive pulley 7 and a driven pulley 8, and as the drive pulley 7 rotates, the drive belt 6
rotates. The carriage 4 is engaged with a predetermined position of the drive belt 60, and the carriage 4 moves as the drive belt 6 rotates. The drive pulley 7 is pivotally attached to the rotating shaft of the drive motor 9, and the drive belt 6 moves according to the rotation of the drive motor 9, and when the rotation of the drive motor 9 is reversed, the direction of movement of the drive belt 6 is reversed. .
駆動ベルト６は、図示のように駆動プーリ７の回転を滑
りなく伝達するために歯形状の凹凸部が内周面の全域に
形成され、これに対応して駆動プーリ７にピニオンが用
いられている。As shown in the figure, the drive belt 6 has tooth-shaped uneven parts formed over the entire inner peripheral surface in order to transmit the rotation of the drive pulley 7 without slipping, and a pinion is used for the drive pulley 7 correspondingly. There is.
以上の構成において、記録開始時には、図示せぬ制御部
によって、ヘッド３が記録開始位置にくるように駆動モ
ータ９を回転させる。ついで記録データに基づいて記録
ヘッド３を駆動しながら、記録状況に合わせつつ、駆動
ベルト６が図の右方向へ移動するように駆動モータ９を
ステップ状に回転させる。１行分の記録が終了する（図
示せぬ位置センサ又はスイッチによって終了を検出）と
、駆動モータ９は回転方向を反転し、駆動ベルト６の回
転方向を逆にして連続回転し、記録ヘッド３を記録開始
位置へ移動させる。記録ヘッド３が戻されたのち、次の
行の記録が前述と同様にして実行される。In the above configuration, at the time of starting recording, the drive motor 9 is rotated by a control section (not shown) so that the head 3 comes to the recording start position. Next, while driving the recording head 3 based on the recording data, the drive motor 9 is rotated in steps so that the drive belt 6 moves to the right in the figure in accordance with the recording situation. When recording for one line is completed (the end is detected by a position sensor or switch (not shown)), the drive motor 9 reverses its rotational direction, and the drive belt 6 rotates continuously with the rotational direction reversed, and the recording head 3 Move to the recording start position. After the recording head 3 is returned, recording of the next line is executed in the same manner as described above.
しかし、従来のキャリッジ搬送装置にあっては、高精細
の印字を得るためにキャリッジを微少移動させた場合、
歯形が全周に設けられているため駆動ベルトと駆動プー
リないしは従動プーリとの噛み合い時の負荷変動の影響
を受けやすい。However, with conventional carriage conveyance devices, when the carriage is moved slightly to obtain high-definition printing,
Since the tooth profile is provided all around the circumference, it is susceptible to load fluctuations when the drive belt meshes with the drive pulley or the driven pulley.
また、高速印字を行う場合、駆動ベルト自体の振動がキ
ャリッジに伝わるため、記録品位を劣化させるという問
題がある。従来、ベルトの振動を抑制するために、第３
図のように従動プーリ８に図示Ａ方向のテンション力を
与え、ベルト張力を大きくする手段がとられている。し
かし、ベルト張力を大きくするためには、ベルト強度を
上げねばならないと共に、ベルトの伸び及び耐久性の点
で問題がある。Furthermore, when high-speed printing is performed, vibrations of the drive belt itself are transmitted to the carriage, resulting in a problem of deterioration of recording quality. Conventionally, in order to suppress belt vibration, a third
As shown in the figure, a measure is taken to apply a tension force in the direction A in the figure to the driven pulley 8 to increase the belt tension. However, in order to increase the belt tension, it is necessary to increase the belt strength, and there are problems with belt elongation and durability.
本発明の目的は、このような従来の問題を解決でき、駆
動ベルトの噛み合いの影響およびベルト振動の影響を抑
制でき、記録の高速化及び高精細化が可能なキャリッジ
搬送装置を提供することである。An object of the present invention is to provide a carriage conveyance device that can solve these conventional problems, suppress the effects of drive belt meshing and belt vibration, and enable faster and more precise recording. be.
本発明は、ヘッドの往復時に駆動プーリに接する範囲の
駆動ベルトの内周面にのみ歯形状を施し、他の部分を一
様な厚みの平ベルトにすることにより、ベルト回転時の
負荷変動及びベルト振動を低減することを可能にし、も
って、上記目的を達成するものである。The present invention has a tooth shape only on the inner circumferential surface of the drive belt in the range that contacts the drive pulley when the head reciprocates, and the other parts are made into a flat belt with a uniform thickness. This makes it possible to reduce belt vibration, thereby achieving the above object.
以下、第１図及び第２図を参照して本発明を具体的に説
明する。The present invention will be specifically described below with reference to FIGS. 1 and 2.
第１図は本発明の一実施例を示す正面図であり、第２図
はキャリッジを始端から終点へ移動させた状態を示す正
面図である。FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a front view showing a state in which the carriage is moved from a starting end to an ending point.
第１図および第２図に示すように、キャリッジ４が始端
から終点に至るまで駆動プーリ７に接するベルト内周面
にのみ凹凸を設けた歯形ベルト部１１、及び該歯形ベル
ト部１１以外を一様な厚みにした平ベルト部１２より成
る駆動ベルトｌＯを用いると共に、平ベルト部１２のみ
に接するプーリに歯形を有せず表面が滑らかな従動プー
リ１３を用いるようにしたものである。As shown in FIGS. 1 and 2, the carriage 4 has a toothed belt section 11 which is provided with unevenness only on the inner peripheral surface of the belt that contacts the drive pulley 7 from the start end to the end point, and the toothed belt section 11 is fixed. A driving belt 10 consisting of a flat belt portion 12 having a different thickness is used, and a driven pulley 13 having a smooth surface and having no tooth profile is used as a pulley that contacts only the flat belt portion 12.
以上の構成において、記録開始時には、キャリッジ４は
第１図の状態にあり、駆動プーリ７は歯形ベルト部１１
の駆動始端部にあり、記録処理の進行にともなって駆動
ブーＵ ７は時計方向にステップ回転し、キャリッジ４
は図の右方向へステップ移動する。なお、記録部分が無
く且つＣＲが出されていない状態のもとでは、駆動モー
タ９はキャリッジ４が反転位置に到達するまで連続回転
する。In the above configuration, at the start of recording, the carriage 4 is in the state shown in FIG.
As the recording process progresses, the drive boo U7 rotates in steps clockwise, and the carriage 4
moves step to the right in the figure. Note that in a state where there is no recording portion and the CR is not output, the drive motor 9 continuously rotates until the carriage 4 reaches the reverse position.
第２図はキャリッジ４が最大限移動し、終点に到達した
状態を示し、駆動ベルトは歯形ベルト部１１の駆動終端
部が駆動プーリ７に歯合している。FIG. 2 shows a state in which the carriage 4 has moved to the maximum extent and has reached the end point, and the driving end of the toothed belt portion 11 of the drive belt is in mesh with the drive pulley 7.
この状態に到達すると同時に駆動モータ９は逆回転し、
これによって駆動ベルト１０の回転方向が反転し、キャ
リッジ４は第１図の状態に戻される。At the same time as this state is reached, the drive motor 9 rotates in reverse,
As a result, the direction of rotation of the drive belt 10 is reversed, and the carriage 4 is returned to the state shown in FIG.
以後、例えば１頁分の記録終了まで、キャリッジ４は１
行分の記録を行うたびに往復動する。 キャリッジ４が
１往復することによって、駆動ベル１−１０が駆動プー
リ７に歯合する範囲は歯形ベルト部１１の範囲内である
。したがって駆動ベルト１０と駆動プーリ７の噛み合い
による負荷変動は、歯形ベルト部１１の領域でのみ発生
し、噛み合い部分を有しない平ベルト部１２の領域では
負荷変動を生じない。After that, for example, the carriage 4 will move 1 until the recording of one page is completed.
It moves back and forth every time a line is recorded. The range in which the drive bell 1 - 10 meshes with the drive pulley 7 by one reciprocation of the carriage 4 is within the range of the toothed belt portion 11 . Therefore, load fluctuations due to the meshing of the drive belt 10 and the drive pulley 7 occur only in the region of the toothed belt portion 11, and no load fluctuations occur in the region of the flat belt portion 12, which does not have a meshing portion.
さらに、平ベルト部１２は、凹部を有しないためにベル
ト厚を一定にでき、伸び及び強度を一定にでき、ベルト
振動を抑制することができる。平ベルト部１２の厚さ及
び長さは予め任意に設定できるため、伸び及び耐久性を
考慮したベルト張力に応じた寸法ならびに搬送装置系の
固有振動数に応じた共振の生じない寸法に設定できる。Further, since the flat belt portion 12 does not have a concave portion, the belt thickness can be kept constant, elongation and strength can be kept constant, and belt vibration can be suppressed. Since the thickness and length of the flat belt portion 12 can be set arbitrarily in advance, they can be set to dimensions that correspond to the belt tension in consideration of elongation and durability, and to dimensions that do not cause resonance according to the natural frequency of the conveying device system. .
以上の説明から明らかな如く、本発明によれば、駆動ベ
ルトの駆動プーリに接する部分のみに凹凸形状の歯形ベ
ルト部を形成すると共に従動プーリに接する部分に一定
肉厚の平ベルト部を形成する構成にしたので、ベルト振
動ならびに噛合駆動による負荷変動の影響を低減し、記
録品位の劣化を防止しうるキャリッジ搬送装置が提供さ
れる。As is clear from the above description, according to the present invention, an uneven toothed belt portion is formed only in the portion of the drive belt that contacts the drive pulley, and a flat belt portion with a constant thickness is formed in the portion that contacts the driven pulley. With this configuration, a carriage conveying device is provided that can reduce the influence of load fluctuations due to belt vibration and meshing drive, and can prevent deterioration of recording quality.
第１図は本発明によるキャリッジ搬送装置の一実施例を
示す正面図、第２図は第１図の実施例におけるキャリッ
ジ移動時の正面図、第３図は従来のキャリッジ搬送装置
の斜視図である。
１・−・・・−−一−−記録シート、２−・・・−一−
−−・−プラテン、３−一−−−−・・記録ヘッド、４
−・−・・−−−−一・キャリッジ、５−・−・−・−
・・ガイド軸、７−・−−−−一・・−・駆動プーリ、
８−・−・〜・−・−・従動プーリ、１０−・−・−−
−−一駆動ベルト、１１−・・・−・・・歯形ベルト部
、１２・−・−−−−−一平ベルト部。FIG. 1 is a front view showing an embodiment of a carriage transport device according to the present invention, FIG. 2 is a front view of the embodiment shown in FIG. 1 when the carriage is moving, and FIG. 3 is a perspective view of a conventional carriage transport device. be. 1.--...--1--recording sheet, 2--.--1-
---Platen, 3-1--Recording head, 4
−・−・・−−−−1 Carriage, 5−・−・−・−
・・Guide shaft, 7-・----1・・・Drive pulley,
8-・-・〜・−・−・Driven pulley, 10−・−・−−
---1 drive belt, 11---toothed belt section, 12-----1 flat belt section.
Claims (2)
トにキャリッジ結合し、前記駆動プーリを回転させて前
記キャリッジを搬送するキャリッジ搬送装置において、
前記駆動ベルトの前記駆動プーリに接する部分に該駆動
プーリに噛合する歯形部を形成し、かつ前記従動プーリ
に接する部分を一様な厚みに形成することを特徴とする
キャリッジ搬送装置。(1) A carriage conveyance device in which a carriage is coupled to a drive belt stretched between a drive pulley and a driven pulley, and the carriage is conveyed by rotating the drive pulley,
A carriage conveying device characterized in that a toothed portion that engages with the drive pulley is formed in a portion of the drive belt that contacts the drive pulley, and a portion that contacts the driven pulley is formed to have a uniform thickness.
長にしたことを特徴とする特許請求の範囲第１項に記載
のキャリッジ搬送装置。(2) The carriage conveying device according to claim 1, wherein the length of the toothed portion is equal to the moving distance of the carriage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP581287A JPS63173676A (en) | 1987-01-13 | 1987-01-13 | Carriage carrying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP581287A JPS63173676A (en) | 1987-01-13 | 1987-01-13 | Carriage carrying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63173676A true JPS63173676A (en) | 1988-07-18 |
Family
ID=11621492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP581287A Pending JPS63173676A (en) | 1987-01-13 | 1987-01-13 | Carriage carrying device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63173676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01141053U (en) * | 1988-03-22 | 1989-09-27 | ||
| EP0972645A1 (en) * | 1998-07-16 | 2000-01-19 | Hewlett-Packard Company | Belt drive arrangement |
-
1987
- 1987-01-13 JP JP581287A patent/JPS63173676A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01141053U (en) * | 1988-03-22 | 1989-09-27 | ||
| EP0972645A1 (en) * | 1998-07-16 | 2000-01-19 | Hewlett-Packard Company | Belt drive arrangement |
| US6123473A (en) * | 1998-07-16 | 2000-09-26 | Hewlett-Packard Company | Belt drive arrangement for a printhead carriage |
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