JPS5894477A - Dot matrix printer - Google Patents

Abstract

PURPOSE:To enable a group of electromagnets to be closely arranged and contrive to make a dot matrix printer smaller in size and higher in accuracy, by a method wherein movable pieces of electromagnets engaged with a plurality of dot printing elements aligned in a vertical direction are bent, and engaging positions are dispersed in the direction of the main shaft of the printer. CONSTITUTION:For example, in a dot matrix printer wherein dot printing elements 1 consisting of sheets are stacked in the direction of the thickness of the sheets and guide bodies 5 are fitted over the stack of the elements 1, engaging parts 2 provided respectively for the elements 1 are appropriately staggered from each other in respect of the longitudinal direction of the elements 1 so that the engaging positions between the movable pieces 41-43 of the electromagnets 3 and the engaging parts 2 are not concentrated on a part. On the other hand, since the group of the electromagnets 3 are arranged in a plane orthogonal to the direction of the main shaft of the printer (the direction of the printing action of printing parts provided at front ends of the elements 1), the movable pieces 41-43 of the electromagnets 3 are bent so as to be engaged with the engaging parts 2 corresponding respectively thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an impact dot matrix printer comprising a plurality of dot printing elements 9.

m for drive control engaged with each dot printing element respectively.
ff 1 stone 11 is 1 Normal dot matrix printer main axis direction (driver) F4] 1! Since the dot elements are arranged in an l plane circle perpendicular to the dot printing element (the direction of printing operation of the Ube provided in gl), if you increase the number of dot printing elements and try to obtain clear printing, the electromagnetic wall [ I can do it! By arranging the dots in the dot matrix printer H, the design will be designed to avoid a significant increase in the volume of the dot matrix printer. As a result, it is required to downsize the process and minimize the arc, making it difficult to process one part and assemble it.

Therefore, this invention is based on the above-mentioned movable piece.

The above-mentioned disadvantages are eliminated by distributing the engagement positions in the direction of the main axis of the dot matrix printer.

The following is an explanation based on an embodiment in which the present invention is applied to a dot matrix printer consisting of a thin @O dot element.
)...*1 in the thickness direction, and the ends of the open bales and the guide bodies (5) and (6) are fitted to form a dot matrix printer as shown in 811WA. In this case, the engaging portions (il) (B)... provided in each dot printing element are shifted in position from each other in the longitudinal direction of the dot printing element (1) (1)... , movable piece 141) ---
・0 and dot printing element (1) formed so that the engagement positions of the engaging portions (2) (fi)... are not concentrated at the lQ location.
(1)...Form it into the shape shown in [, respectively. That is, the electromagnet +8) (II) that engages with each dot printing element (1) (1)...
-・Q group ri.

As shown in FIG. For example, the movable piece I (6) of the electromagnet (R) (3)...
)... are the corresponding engagements 1i(1)(1), respectively.
The IC1 must be bent to engage with... In other words, the engaging portion (1) shown in Fig. 8 (Fig. 118 (8)) is .

Figure S (Screaming engagement @ (il) dot printing element (1)
In addition, the engagement part (fi) of II diagram (8) is installed in Figure 8 (the second edition shown in (2)).
Since the dot printing element α) is provided in the longitudinal direction of the electromagnet (1) shown in FIG. - are respectively bent as shown in rLllI. Since the dots and K are dispersed in the direction of the main axis of the dot matrix printer at each locking position, confusion in the locking positions can be avoided! Niru.

Now, in this constructed vc'M rt7t dot matrix printer, if the special electromagnet ('a) is energized by the resistor, this electromagnet (a specific dot print connected to the barrel) will be activated. Element α) performs a dotting operation on the printing paper. Therefore, dot matrix printers
Move in the direction perpendicular to the main @iI while receiving σ,
q! r dots and Ushibukko (1) (1)... are done at the same time or next to 1 and the circle dot operation [If done, #c on the printed paper
, the desired characters (including symbols, graphs, and figures such as Japanese cedars) are printed as dot group #'c1.

The above is an example of a dot matrix printer consisting of a thin plate dot printing element, but the present invention can also be applied to a dot matrix printer using a wire ttjE for the dot printing element. Since the dot 1 trix printer is constructed as described above, even if the number of annularly arranged stones increases with the increase in the number of dot printing elements, the close range #llK engagement position will not be complicated. Therefore, it will not be difficult to secure the required locking position. In addition, there is no need to increase the difficulty of machining one part due to the high precision of TFCFK, such as the carving of the movable piece that secures the locking position, or to repeatedly move the assembly machine. It is extremely easy to increase the number of dot printing elements in order to obtain sharper and sharper prints, and the volume of dot matrix printers can also be significantly increased.

[Brief explanation of drawings]

wA indicates tTa when this O is applied to a dot matrix printer in which the dot printing element is in the form of a thin plate. Figure 1rjA is a perspective view of a dot matrix printer. Figure 1 is a cross-sectional view of Figure 1, which is similar to Figure 1, Figure 3 is a view from the arrow σ in Figure IIs, Figure 8 (B) is a view from the arrow B shown in Figure IIs, Figure 1 (The information is the 0 arrow view shown in Figure 2. Symbol explanation <1)...Dot printing element 俤)...
Engagement part (8)... Electromagnet K! l (Rotation) 0...Movable piece (5)...Guide body
(6)・・・Printing Department General Applicant
Fumi Sekiguchi Patent attorney Ryo Hayashi
@-1 Figure 1 Figure 2

Claims (1)

[Claims] In an impact type printer #C, which prints characters, etc. by controlling a plurality of vertically arranged dot printing elements while scanning them in the kaI direction, each of which is driven by an electromagnet, the movable piece of the electromagnet that engages with the dot printing element is moved. A dot matrix printer in which the dot matrix printer is formed by folding and each engaging position shell is configured to have one outer shell in the direction of the main axis of the printer.