JPS5823645Y2 - Tashinki Rokudenkiyoku - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a multi-needle recording electrode used in an electrostatic recording device such as a facsimile.

Generally, in this type of multi-needle electrode device, a recording signal is distributed by a circuit as shown in FIG.

That is, in the figure, 1 is a needle electrode arranged in a line, 2 is a back electrode, and 3 is an electrostatic recording paper transferred between the needle electrode 1 and the back electrode 2.

The needle electrodes 1 are arranged in blocks 1□, 12 to 1 each of a plurality of needle electrodes.
o, 20, 2□~2o...N1. It is divided into N electrode blocks N2 to Nn, and the corresponding needle electrodes of each block are connected in parallel according to the arrangement order.
A drive circuit A is configured by al, a2 to a.

On the other hand, the back electrode Sl corresponds to each block of the multi-needle electrode 1.
.

S2 to SN are provided, and lead wires from these constitute a drive circuit B.

Recording is performed using the matching needle electrodes of the drive circuits A and B, and predetermined characters, illustrations, etc. are formed as electrostatic latent images on the recording paper 3.

A multi-needle recording electrode suitable for this distribution method usually consists of a needle electrode 1 consisting of a large number of insulated wires fixed in resin, each connected to a predetermined position on a separately provided internal wiring terminal board, and then the whole is further wrapped in resin. It has a structure that allows it to be sealed or stored in a case.

However, among these types of multi-needle recording electrodes, there are those that have a large number of external connection terminals, such as those that have an integral structure with the upper recording needle and back electrode and apply the recording voltage from one side of the recording paper, and those that have a narrow recording width. The drive circuit a1. In the case where there are many numbers a2 to a, the wiring work to the terminal board becomes extremely complicated, leading to incorrect wiring, and the device becomes larger.

The present invention aims to improve this point, and will be explained in detail below based on the illustrated embodiment.

Drive circuit a1. First, a2 to a are each of a plurality of blocks, and in the illustrated embodiment, A1. A2. It is divided into 3 blocks of A3.

FIG. 2 shows an example of the printed circuit board 4 used in this proposal, in which a required number of conductor patterns 6 are formed on an insulating plate 5, and a land is provided at one end of each conductor 6 for passing an insulated wire and soldering. There is.

Each block A1 of the drive circuit A. A2. A3 is connected to the same number of printed circuit boards 40, 4□, and 43.

After that, each printed circuit board 4□, 42, 43 is fixed in an upright state with resin 7 so as to form a roughly rectangular shape, but at this time each printed circuit board is not completely embedded;
As shown in FIG. 3, the upper part is made to protrude from the flat part of the electrode.

Then, a connector is directly inserted into this protrusion 8 to perform recording.

The number of connector insertion portions 8 may be increased or decreased as necessary.
Further, it is possible to provide this not only on one surface as shown in the third figure but also on other surfaces other than the recording electrode surface.

According to the present invention having the above configuration, the drive circuits a1゜a2~
a) was divided into blocks of multiple wires and connected to the same number of printed circuit boards 4 as the blocks, and the connector insertion portion was provided upright on the plane of the multi-needle electrode, so there was a risk of incorrect wiring, and the system Moreover, even if the number of external connection terminals increases, the multi-needle electrode can be manufactured without increasing the external dimensions, and the device can be miniaturized, which has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of a multi-needle electrode type electrostatic recording device for explaining the present invention. FIG. 2 is a plan view showing an example of an internal wiring terminal board used in the present invention, and FIG. 3 is a perspective view of a multi-needle electrode shown in an embodiment of the present invention. 1...Needle electrode, Z...Back electrode, 3.
... Electrostatic recording paper, soil ... Printed circuit board, 5
...Insulating plate, 6...Conductor pattern, 7
...Resin, 8...Protrusion, SA, SB
~SN... Back electrode, A, B... Drive circuit.

Claims (1)

[Scope of utility model registration request] A needle electrode consisting of a large number of insulated wires is divided into electrode blocks of n wires each, and corresponding needle electrodes of each block are connected in parallel according to the arrangement order, al, a.
In the multi-stylus recording electrodes comprising drive circuit A, drive circuit a1.2-a. A2 to an are divided into a plurality of blocks each, connected to the same number of printed circuit boards 4 as the blocks, stood upright so that each printed circuit board 4 protrudes from the flat part of the electrode, and fixed with resin 7, A multi-needle recording electrode characterized in that the protruding portion 8 is a connector insertion portion.