JPS615973A - Plane scanning type printer - Google Patents

Plane scanning type printer

Info

Publication number
JPS615973A
JPS615973A JP12701584A JP12701584A JPS615973A JP S615973 A JPS615973 A JP S615973A JP 12701584 A JP12701584 A JP 12701584A JP 12701584 A JP12701584 A JP 12701584A JP S615973 A JPS615973 A JP S615973A
Authority
JP
Japan
Prior art keywords
belt
rotary encoder
movement
carriage
head
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
Application number
JP12701584A
Other languages
Japanese (ja)
Inventor
Toshiyuki Iwazawa
岩澤 利幸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12701584A priority Critical patent/JPS615973A/en
Publication of JPS615973A publication Critical patent/JPS615973A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00Character- or line-spacing mechanisms
    • B41J19/18Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/20Positive-feed character-spacing mechanisms

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)

Abstract

PURPOSE:To prevent detection accuracy from being lowered due to an ink mist adhered to a head or the like, by a construction wherein movement of a belt fixed to a head carriage is detected through the number of pulses generated by a rotary encoder. CONSTITUTION:The head carriage 15 is fixed to the belt 13, and the belt 13 is driven by rotating a motor 11, thereby reciprocating the carriage. The movement of the belt is detected through the number of pulses generated by the rotary encoder 16. The encoder 16 is of the hermitically sealed type, so that the detection accuracy is not lowered even in the presence of an ink mist, and minute movements can be detected by enhancing the resolving power.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は記録ヘッドを平面内で往復移動させ一〇画像を
記録する平面走査型プリンタに関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a plane scanning printer that records ten images by moving a recording head back and forth within a plane.

従来例の構成とその閤題点 従来の平面走査型プリンタの1つの例を第1図に示す。Structure of conventional example and its issues An example of a conventional flat scanning printer is shown in FIG.

同図に於いて、1i″ltモータ、2はモータのグーリ
、3はベルト、4は滑車、6はへラドキャリッジである
。6はリニアスケールであり、等間隔に目盛又は穴7が
あけられておりキャリッジ6の移動の際フォトセンサ8
で、目盛又は穴7を光学的に検出しパルス信号として出
力するものである。リニアスケール6、穴7、フォトセ
ンサ8でリニアエンコーダを形成している。
In the figure, 1i''lt motor, 2 is the motor's googly, 3 is the belt, 4 is the pulley, and 6 is the helad carriage. 6 is the linear scale, with scales or holes 7 made at equal intervals. When the carriage 6 moves, the photo sensor 8
The scale or hole 7 is detected optically and outputted as a pulse signal. The linear scale 6, hole 7, and photo sensor 8 form a linear encoder.

このようにリニアエンコーダを平面走査型プリンタに使
用した場合、ヘッドから出るインクミスト等でリニアス
ケール6が汚れ、精度が落ちてくる。又スケール目盛7
の密度は、物理的に制限がある為に、高密度、つまり微
細な位置検出が、不可能であった。したがって正確な印
字制御ができない欠点があった。
When a linear encoder is used in a plane scanning printer in this way, the linear scale 6 becomes dirty with ink mist etc. emitted from the head, resulting in a decrease in accuracy. Also scale graduation 7
Due to physical limitations on the density, high-density, that is, fine position detection, has been impossible. Therefore, there was a drawback that accurate printing control could not be performed.

発明の目的 本発明に以上の欠点を解消するもので、精度の劣化が々
く高精細なヘッド位置検出が可能なヘッド移動機構を有
する平面走査プリンタを得ることを目的としたものであ
る。
OBJECTS OF THE INVENTION It is an object of the present invention to overcome the above-mentioned drawbacks, and to provide a flat scanning printer having a head moving mechanism that is capable of high-definition head position detection without much deterioration in accuracy.

発明の構成 本発明はモータおよび滑車間に架張されたベトの移動に
応じてヘッドキャリッジを移動させ、モータもしくは滑
車の回転またはベルトの移動に応じて回転するロータリ
ーエンコーダーを設けた平面走査型プリンタである。ロ
ータリーエンコーダのパルス出力によりヘッドキャリッ
ジ、即ち記録ヘッドの位置が正確に検出されるので、記
録位置を正確に制御することができる。
Structure of the Invention The present invention provides a plane scanning printer that moves a head carriage in accordance with the movement of a belt stretched between a motor and a pulley, and is provided with a rotary encoder that rotates in accordance with the rotation of the motor or pulley or the movement of a belt. It is. Since the position of the head carriage, that is, the recording head, is accurately detected by the pulse output of the rotary encoder, the recording position can be accurately controlled.

実施例の説明 以下本発明の実施例について図面とともに説明する。Description of examples Embodiments of the present invention will be described below with reference to the drawings.

第2図は本発明の〜実施例で、11けモータ、12はモ
ータグーリ、13はタイミングベルトのよう彦すべり摩
擦の大きいベルト、14は滑車、15は記録ヘッドを搭
載したヘッドキャリッジ、16は密ぺい式のロータリー
エンコーダ、17はカプラー、18.19は一\ツドキ
ャリッジの水平移動の両端に配された位置センサである
。ヘッドキャリッジ16が、左端位置上ンサ18に隣接
した状態が待期状態となる。そこで位置センサ18゜1
9の出力をカウンタのリセット信号とし、ロータリーエ
ンコーダ16のパルス出力信号をカウンタ入力信号とす
れば、位置センサ18,19とキャリッジ15との距離
がカウンター出方と比例するのでキャリッジの移動位置
が検出される。
Figure 2 shows an embodiment of the present invention, with 11 motors, 12 a motor gully, 13 a belt with high sliding friction such as a timing belt, 14 a pulley, 15 a head carriage with a recording head mounted thereon, and 16 a closed-loop belt. 17 is a coupler, and 18 and 19 are position sensors placed at both ends of the horizontal movement of the flat carriage. The state in which the head carriage 16 is at the left end position adjacent to the upper sensor 18 is in a standby state. Therefore, the position sensor 18°1
If the output of 9 is used as the counter reset signal and the pulse output signal of the rotary encoder 16 is used as the counter input signal, the distance between the position sensors 18, 19 and the carriage 15 is proportional to the direction of the counter output, so the moving position of the carriage is detected. be done.

このロータリーエンコーダ16は密べい式であるから、
ヘッドからのインクミストに対しても検出精度が下らず
、又、微細移動検出に対しても、分解能の高いロータリ
ーエンコーダを選ぶが又は回転数逓倍用のギヤ付ロータ
リーエンコーダを使用することによって容易に実現でき
る。
Since this rotary encoder 16 is a closed-loop type,
Detection accuracy does not decrease even for ink mist from the head, and for fine movement detection, it is easy to select a rotary encoder with high resolution or use a rotary encoder with a gear for multiplying the rotation speed. can be realized.

第3図は本発明の他の実施例を示す。第2図と異なる点
は、ロータリーエンコーダ26を滑車14の軸とカプラ
ー27で直結した点と、端位置センサ18,19の丁度
中間に中央センサ3oを設けた点である。。その他の部
分は第2図と同様であり同一符号を付して説明を省略す
る。ロークリ−エンコーダ26の動作は第2図のロータ
リーエンコーダ16と同じであるから説明は省略する。
FIG. 3 shows another embodiment of the invention. The difference from FIG. 2 is that the rotary encoder 26 is directly connected to the shaft of the pulley 14 by a coupler 27, and that a central sensor 3o is provided exactly between the end position sensors 18 and 19. . Other parts are the same as those in FIG. 2, are given the same reference numerals, and explanations are omitted. The operation of the rotary encoder 26 is the same as that of the rotary encoder 16 shown in FIG. 2, so a description thereof will be omitted.

又、中央センサ3oは、ヘッドキャリッジ15の移動位
置をより正確に把握する為に設けたものであり、とのセ
ンサ出力によってカウンター出力を補正することにより
、より精度のよい位置検出ができる。
Further, the central sensor 3o is provided to more accurately grasp the moving position of the head carriage 15, and by correcting the counter output with the sensor output, more accurate position detection can be performed.

第4図は本発明の更に他の実施例を示し、ヘッドキャリ
ッジ移動時の正面図を示す。図において第2図と同一部
分には同一符号を付して説明を省略する041はキャリ
ッジ16にとりつけられた被検知物である。第2図と異
なる点は、ロータリーエンコーダ16がモータ11の軸
と直結しないで、ベルト13をプーリ37とローラ38
で滑らないようにはさむことによって、キャリッジ15
の移動、つまりベルト13の移動をプーリー37でとら
え、それを回転運動に変えて、ロータリーエンコーダ1
6でパルス出力を出す点である。この方法であればより
微細な位置の移動検出をする場合ロータリーエンコーダ
16のブーりの径を小さくすれば簡単に実現できる。
FIG. 4 shows still another embodiment of the present invention, and shows a front view when the head carriage is moving. In the figure, the same parts as those in FIG. The difference from FIG. 2 is that the rotary encoder 16 is not directly connected to the shaft of the motor 11, but instead connects the belt 13 to the pulley 37 and roller 38.
Carriage 15
The movement of the belt 13, that is, the movement of the belt 13, is captured by the pulley 37 and converted into rotational movement, and the movement of the belt 13 is detected by the rotary encoder 1.
6 is the point at which the pulse output is output. With this method, when detecting movement at a more minute position, it can be easily realized by reducing the diameter of the bore of the rotary encoder 16.

発明の効果 以上のように本発明はへ、ドキャリノジをベルトに固定
して、モータの回転運動によりベルトを駆動してヘッド
キャリッジを往復運動させ、このベルトの移動をロータ
リーエンコーダのパルス数で検出するようにした平面走
査型プリンタでへ。
Effects of the Invention As described above, the present invention is characterized in that a carriage is fixed to a belt, the belt is driven by the rotational movement of a motor to cause a head carriage to reciprocate, and the movement of this belt is detected by the number of pulses of a rotary encoder. With a flat scanning printer.

ドのインクミスト等による検出精度の劣化を防ぐことが
でき、また1分解能の高いロータリーエンコーダを使用
するか、又は50−タリー1ンコーダのプーリ径を小さ
くすることにより、リニアエンコーダでは不可能であっ
た微細な移動検出ができ乙。
In addition, by using a rotary encoder with a high 1-resolution or by reducing the pulley diameter of the 50-tally 1 encoder, it is possible to prevent deterioration of detection accuracy due to ink mist, etc. on the encoder, which is impossible with a linear encoder. It is possible to detect minute movements.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来の平面走査型プリンタにおけるヘッドキャ
リッジ移動機構を示す正面図、第2図及び第3図は各々
本発明による平面走査型プリンタにおけるヘッドキャリ
ッジ移動機構の実施例を示す平面図、第4図は本発明に
よる平面走査型プリンタにおけるヘッドキャリッジの吏
ニ他の実施例を示す正面図である。 11 ・・・モータ、12 ・モータフ“−1ノ、13
・・タイミングベルト、14・・・・滑車、15  ・
ヘッドキャリッジ、16.26   ロータIJ−エン
コーダ、17.27   カプラー、1B、19゜3o
  位置センサ、37−7’−1ハ 38・ ・ローラ
FIG. 1 is a front view showing a head carriage moving mechanism in a conventional flat scanning printer, and FIGS. 2 and 3 are plan views showing an embodiment of the head carriage moving mechanism in a flat scanning printer according to the present invention. FIG. 4 is a front view showing another embodiment of the head carriage in the flat scanning printer according to the present invention. 11...Motor, 12 -Motor ``-1'', 13
・・Timing belt, 14・・Pulley, 15・
Head carriage, 16.26 Rotor IJ-encoder, 17.27 Coupler, 1B, 19°3o
Position sensor, 37-7'-1c 38. Roller.

Claims (2)

【特許請求の範囲】[Claims] (1)モータおよび滑車間に架張されたベルトと、前記
ベルトの移動に応じて移動するヘッドキャリッジと、前
記ヘッドキャリッジの移動範囲端部に配された位置セン
サと、前記モータもしくは滑車の回転またはベルトの移
動に応じて回転するロータリーエンコーダとを備えたこ
とを特徴とする平面走査型プリンタ。
(1) A belt stretched between a motor and a pulley, a head carriage that moves according to the movement of the belt, a position sensor placed at the end of the movement range of the head carriage, and rotation of the motor or pulley. or a rotary encoder that rotates according to the movement of the belt.
(2)ロータリーエンコーダのパルス出力を計数するカ
ウンタを位置センサの出力でリセットする特許請求の範
囲第1項記載の平面走査型プリンタ。
(2) The plane scanning printer according to claim 1, wherein a counter that counts the pulse output of the rotary encoder is reset by the output of the position sensor.
JP12701584A 1984-06-20 1984-06-20 Plane scanning type printer Pending JPS615973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12701584A JPS615973A (en) 1984-06-20 1984-06-20 Plane scanning type printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12701584A JPS615973A (en) 1984-06-20 1984-06-20 Plane scanning type printer

Publications (1)

Publication Number Publication Date
JPS615973A true JPS615973A (en) 1986-01-11

Family

ID=14949573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12701584A Pending JPS615973A (en) 1984-06-20 1984-06-20 Plane scanning type printer

Country Status (1)

Country Link
JP (1) JPS615973A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5225029A (en) * 1990-11-22 1993-07-06 Fuji Photo Film Co., Ltd. Apparatus for feeding end securing tapes
US5450106A (en) * 1992-04-14 1995-09-12 Canon Kabushiki Kaisha Recording apparatus provided with a magnetic encoder for a scanning carriage
JP2002029113A (en) * 2000-07-17 2002-01-29 Mimaki Engineering Co Ltd Ink jet recorder
JP2002361857A (en) * 2001-06-12 2002-12-18 Mimaki Engineering Co Ltd Ink jet printer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5225029A (en) * 1990-11-22 1993-07-06 Fuji Photo Film Co., Ltd. Apparatus for feeding end securing tapes
US5450106A (en) * 1992-04-14 1995-09-12 Canon Kabushiki Kaisha Recording apparatus provided with a magnetic encoder for a scanning carriage
JP2002029113A (en) * 2000-07-17 2002-01-29 Mimaki Engineering Co Ltd Ink jet recorder
JP2002361857A (en) * 2001-06-12 2002-12-18 Mimaki Engineering Co Ltd Ink jet printer
JP4587424B2 (en) * 2001-06-12 2010-11-24 株式会社ミマキエンジニアリング Inkjet printer

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