JPS6222841U

JPS6222841U -

Info

Publication number: JPS6222841U
Application number: JP11546185U
Authority: JP
Priority date: 1985-07-26
Filing date: 1985-07-26
Publication date: 1987-02-12

Description

[Brief explanation of the drawing]

第１図は本考案の電磁式印字ヘツドの一実施例
を示す模式図、第２図ａ，ｂは第１図中のコイル
の接続図、インダクタンスの特性図、第３図は従
来の電磁式印字ヘツドの模式図、第４図ａ，ｂ，
ｃは第３図中の駆動コイルの等価回路図、印加電
圧波形図、電流波形図である。１……鉄心、２……ヨーク、３……アマチユア
、４……第１のコイル、５……第２のコイル、６
……ワイヤ、７……もどしバネ、８……駆動コイ
ル、９……フレーム、１０……スイツチ。 Figure 1 is a schematic diagram showing one embodiment of the electromagnetic printing head of the present invention, Figures 2a and b are connection diagrams of the coils and inductance characteristics in Figure 1, and Figure 3 is a conventional electromagnetic type head. Schematic diagram of the print head, Figure 4a, b,
c is an equivalent circuit diagram, an applied voltage waveform diagram, and a current waveform diagram of the drive coil in FIG. 3. 1...Iron core, 2...Yoke, 3...Amateur, 4...First coil, 5...Second coil, 6
... wire, 7 ... return spring, 8 ... drive coil, 9 ... frame, 10 ... switch.

Claims

[Scope of utility model registration request]

A wire for dotting dots on recording paper at one end, an armature made of a magnetic material to which the other end of the wire is fixed, an iron core, one end fixed to the iron core, and the other end of the armature fixed to the other end. a yoke made of magnetic material and rotatably fixed at the end;
It has a drive coil that winds a conducting wire around the iron core, and a helical return spring that has one end fixed to the wire and the other end fixed to a frame and winds the wire, and a current is applied to the drive coil. In an electromagnetic printing head that performs printing by causing the wire to flow and projecting the wire onto the surface of the recording paper, the drive coil has a first coil and a second coil wound around the iron core, and the drive coil has a first coil and a second coil wound around the iron core. is wound around an iron core, generates a magnetic flux in the same direction as the magnetic flux generated by the first coil in the iron core, is electrically connected in parallel with the first coil with mutual inductance, and is connected to the drive coil. An electromagnetic print head having an inductance that is substantially smaller than an inductance of either of the first and second coils.