JPS60225768A - Printhead driving circuit for dot type serial printer - Google Patents

Printhead driving circuit for dot type serial printer

Info

Publication number
JPS60225768A
JPS60225768A JP8313484A JP8313484A JPS60225768A JP S60225768 A JPS60225768 A JP S60225768A JP 8313484 A JP8313484 A JP 8313484A JP 8313484 A JP8313484 A JP 8313484A JP S60225768 A JPS60225768 A JP S60225768A
Authority
JP
Japan
Prior art keywords
dot
coil
transistor
turned
serial printer
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
JP8313484A
Other languages
Japanese (ja)
Inventor
Kinji Kamitsubara
上津原　謹爾
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8313484A priority Critical patent/JPS60225768A/en
Publication of JPS60225768A publication Critical patent/JPS60225768A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/30—Control circuits for actuators

Landscapes

  • Dot-Matrix Printers And Others (AREA)

Abstract

PURPOSE:To drive all dots on a printhead of a dot type serial printer with a less number of circuits than the number of dots by providing a driving circuit which is adapted to drive one dot each on the right and left sides with one circuit. CONSTITUTION:Transistors 1 and 5 are turned ON and current of a coil 3 flows. When the transistor 1 is turned OFF ahead, current flows through the transistor 5 and a diode 7 from the coil 3 and moreover, when the transistor 5 is turned OFF, energy of the coil is consumed through the diodes 6 and 7 therefrom 3. Then the transistors 2 and 5 on the left side are turned ON and current flows through a coil 4. When the transistor 2 is turned OFF ahead, current flows through the transistor 5 and a diode 8 from the coil 4 and when the transistor 5 is turned OFF, energy of the coil is consumed through the diodes 6 and 8 from the coil 4. In this manner, one dot each on the right and left side of a dot wire is driven with one circuit thereby reducing the number of circuits by a half the number of dot wires.

Description

【発明の詳細な説明】 （技術分野） 本発明はドツト式シリアルプリンタのプリントヘッド駆
動回ＭＫ　即するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a print head drive circuit MK of a dot type serial printer.

（従来技術） 従来ドツト式シリアルプリンタのプリントヘッド１実動
回路は第１図に示すようｖＣ纏２列に並んだドツトの右
側と左側を切刃分けるトランジスタ１０１゜１０２およ
び各ドラトラ駆動する為の複数のトランジスタ１０３に
より構成されていた。(Prior Art) As shown in Fig. 1, the actual circuit for the print head 1 of a conventional dot-type serial printer includes transistors 101 and 102 that separate the cutting edges of the right and left sides of the dots arranged in two rows of VC, and transistors 101 and 102 for driving each dot. It was composed of a plurality of transistors 103.

従って、従来のプリントヘッド駆動回路は印字品質同上
の為のドツト数の増加に伴ない回路数が増え、かつその
部品点数も多くなるという欠点を有していた。Therefore, the conventional print head drive circuit has the disadvantage that the number of circuits increases as the number of dots increases in order to achieve the same print quality, and the number of components thereof also increases.

（発明の目的） 本発明の目的は従来のプリントヘッド駆動回路における
かかる欠点を除去すると共にドツト式シリアルプリンタ
のプリントヘッドの全ドツトを、そのドツト数よりも少
ない回路数で駆動することの出来るプリントヘッド駆動
回路を提供することにある。(Object of the Invention) An object of the present invention is to eliminate such drawbacks in conventional print head drive circuits, and to provide a print head that can drive all the dots of the print head of a dot type serial printer with fewer circuits than the number of dots. An object of the present invention is to provide a head drive circuit.

（発明の構成） 本発明によればドツトワイヤが右側と左側の縦２列に千
鳥４ｊ−んだプリントへ、ドを有するドツト式シリアル
プリンタにおいて、右側と左側の１ドツトずつを１つの
回路で駆動する駆動回路を設けたことｆ％徴とするドツ
ト式シリアルプリンタのプリントヘッド駆動１ｒＩｌ路
が得られる・（実施例） 次に木発すの一実施例について、図面を参照して説明す
る。第２図は本発明の一実施例分示す回路図である。こ
こではコイル３およびコイル４を励磁する場合につめて
説明する。第２図において、本実施例は右側と左側の縦
２列にならんだドツトの右側ｆ　ＪＥＫ動するコイルの
内の１コイル３と、同左（ｉｔｌｌを駆動するコイルの
内の１コイル４と、右側と左側おのおのを励磁するトラ
ンジスタ（駆動回路）１．２と、右側、左側両方全励磁
するトランジスタ（駆動回路）５と、コイルのバック廿
−ジ吸収用のダイオード６と、フライホイーリング回路
用のダイオード７．８とを含む。(Structure of the Invention) According to the present invention, in a dot-type serial printer having dots in which dot wires are arranged in two vertical rows on the right and left sides in a staggered manner, one dot on the right side and one dot on the left side can be driven by one circuit. By providing a drive circuit that provides a drive circuit, a print head drive path for a dot type serial printer with f% characteristics can be obtained. (Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a circuit diagram showing one embodiment of the present invention. Here, the case where the coil 3 and the coil 4 are excited will be explained. In FIG. 2, this embodiment has two vertical rows of dots on the right side and the left side, one coil 3 of the moving coils, one coil 4 of the coils on the left (one coil 4 of the coils driving itll), Transistors (drive circuits) 1 and 2 that excite the right and left sides respectively, transistors (drive circuits) 5 that fully excite both the right and left sides, a diode 6 for absorbing coil backlash, and a flywheel circuit. diodes 7.8.

まずＸ実施例は第３図のタイムチャートに示すようニ、
トランジスタ１と５がオンし、コイル３に電流が流れる
。トランジスタ１が先にオフすると、電流はコイル３か
らトランジスタ５．ダイオード７を通って流れ、更にト
ランジスタ５がオフコイルのエネルギーを消皆する。次
に左１ｕ１（用のトランジスタ２と５がオンしコイル４
に電流が流れる。トランジスタ２が先にオフすると電流
はコイル４からトランジスタ５．ダイオード８を通って
流れ、更にトランジスタ５がオフすると、コイル４から
タ゛イオード６，８全通してコイルのエネルギーを消費
している０以上の動作の繰＋ｊｇ　（、により右側と左
側とを交互に励磁することによりＳ　１つのトランジス
タで２ドツト分を駆動する。First, in the X embodiment, as shown in the time chart of Fig. 3,
Transistors 1 and 5 are turned on, and current flows through coil 3. If transistor 1 turns off first, current flows from coil 3 to transistor 5. It flows through diode 7 and transistor 5 dissipates the off-coil energy. Next, transistors 2 and 5 for left 1u1 are turned on, and coil 4
A current flows through. If transistor 2 is turned off first, current will flow from coil 4 to transistor 5. The current flows through the diode 8, and when the transistor 5 is turned off, the current flows from the coil 4 to the diodes 6 and 8, and the right side and the left side are alternately energized by +jg(, By doing this, one transistor S drives two dots.

（発明の効果） 本発明は以上説明したように、縦２列に千鳥扶並んだド
ツトワイヤの左、右それぞれ１ド、トずつを１つの回路
で駆動することにより１回路数がドツトワイヤ数の半分
ですむ為部品の大幅な削減が出来る等の効果がある。(Effects of the Invention) As explained above, the present invention uses one circuit to drive one dot and one dot on each of the left and right sides of dot wires arranged in a staggered pattern in two vertical rows, thereby reducing the number of circuits to half the number of dot wires. This has the effect of significantly reducing the number of parts.

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

第１図は従来のプリントヘッド駆動回路を示す回路図、
第２図は本発明の一実施例を示す回路図。 用３図はこの一実施例におけるタイムチャートを示す図
である。 １・・・・・・右側励稼用トランジスタ、２・・・・・
・左側励磁用トランジスタ％　３・・・・・右側ドツト
駆動用コイル、４・、・・・・左側ドツト駆動用コイル
、５・川・・両側共用トランジスタ、６・・・・・・バ
ックサージ吸収用ダイオード、７・・・・・右側用７ラ
イホイーリングダイオード％　８・・・・・・左（ｉ＋
１１用７ライホイーリングダイオード。 第３　図Figure 1 is a circuit diagram showing a conventional print head drive circuit.
FIG. 2 is a circuit diagram showing an embodiment of the present invention. Figure 3 is a diagram showing a time chart in this embodiment. 1... Right excitation transistor, 2...
・Left side excitation transistor% 3... Right side dot drive coil, 4... Left side dot drive coil, 5... Transistor shared on both sides, 6... Backsurge absorption Diode for 7...7 right wheeling diode% 8...Left (i+
7 rye wheeling diode for 11. Figure 3

Claims (1)

【特許請求の範囲】[Claims] ドットワイヤが右側と左側の縦２列に千鳥状に並んだプ
リントへ、ソド＆！するドツト式シリアルプリンタにお
いて、右側と左側の１ド、トずつを１つの回路で駆動す
る駆動回路を設けたこと全特徴トスるドツト式シリアル
プリンタのプリントへ、ラド駆動回路。To the print where the dot wires are arranged in a staggered pattern in two vertical rows on the right and left sides, Sodo &! The dot type serial printer has a drive circuit that drives each dot and dot on the right and left sides with one circuit.All features of the dot type serial printer include a rad drive circuit for printing.
JP8313484A 1984-04-25 1984-04-25 Printhead driving circuit for dot type serial printer Pending JPS60225768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8313484A JPS60225768A (en) 1984-04-25 1984-04-25 Printhead driving circuit for dot type serial printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8313484A JPS60225768A (en) 1984-04-25 1984-04-25 Printhead driving circuit for dot type serial printer

Publications (1)

Publication Number Publication Date
JPS60225768A true JPS60225768A (en) 1985-11-11

Family

ID=13793726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8313484A Pending JPS60225768A (en) 1984-04-25 1984-04-25 Printhead driving circuit for dot type serial printer

Country Status (1)

Country Link
JP (1) JPS60225768A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5071269A (en) * 1988-04-04 1991-12-10 Oki Electric Industry Co., Ltd. Wiring of actuators in a wire-dot print head
US5241904A (en) * 1989-10-20 1993-09-07 Hitachi Koki Co., Ltd. Dot like printer employing overlapped current applying sequence to coils of different groups

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5071269A (en) * 1988-04-04 1991-12-10 Oki Electric Industry Co., Ltd. Wiring of actuators in a wire-dot print head
EP0339794B1 (en) * 1988-04-04 1992-07-29 Oki Electric Industry Company, Limited Wire-dot print head
US5241904A (en) * 1989-10-20 1993-09-07 Hitachi Koki Co., Ltd. Dot like printer employing overlapped current applying sequence to coils of different groups

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