JPH01229654A - Electrode head - Google Patents

Abstract

PURPOSE:To enable a support material of an electrode head to record stable printing by obtaining enough strength to load of a platen and tension of a recording material, by a method wherein a block is fixed by attaching a protection cover to all surface of either rear surface of a second and a third support materials pinching an electrode needle arranged to a first support material. CONSTITUTION:Support materials 2a, 2b are so fixed by adhesives as to pinch electrode needles 1a, 1b under a state wherein only joint parts of the electrode needles 1a, 1b to a support material 2c are exposed. Driving IC 4a, 4b and circuit substrates 7a, 7b are attached to a base substrate 3. The electrode needles 1a, 1b, the driving ICs 4a, 4b and electric circuits formed on the circuit substrates 7a, 7b are connected to fine wire conductors 5a, 5b, 6a, 6b by a TAB method. The circuit substrates 7a, 7b are connected to a connector 10 by conductor wires 9a, 9b. Then, a protection cover attaching block 9a is fixed to a part of a rear surface of the support material 2a by adhesives, and a protection cover attaching block 9b is fixed to all the rear surface of the support material 2b by adhesives. An electrode head is completed by attaching protection covers 11a, 11b with a screw 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electrode head for recording electrical signals on a recording medium.

BACKGROUND OF THE INVENTION In recent years, office automation systems have required a variety of terminals. Among these, there is a great demand for recording devices that convert electrical signals into visible images, so-called printers, and recording devices using various methods have been produced to date.

Recording devices suitable for use with electrode needles, such as discharge recording devices and electrolytic recording devices, are excellent in terms of high speed, record preservation, and economy. However, these devices were not good. In other words, the resolution is not very good and the resolution is 5~
6 dosoto/fi was common.

As a means to solve this problem, a scratching head (for example, Japanese Patent Application No. 178537/1983) was filed in which a hexagonal boron nitride sintered body was used as a support for the t-pole needle.
fi high resolution printing quality can now be obtained. Furthermore, as a means to form 1i scratching needles, copper foil is photoetched on both main surfaces of the hexagonal boron nitride sintered body, and the electrode needles on both main surfaces are sandwiched between the hexagonal boron nitride sintered bodies. Head manufacturing method (for example, Japanese Patent Application No. 1983-74605)
and yoko-a (for example, Japanese Patent Application No. 62-90222) have been proposed. Hereinafter, the above-mentioned conventional electrode head will be explained with reference to the drawings. FIG. 2 is a sectional view of a conventional electrode head. In FIG. 2, the xi needles 1a and lb are used to apply electrolytic copper in stripes (line width: 62.5 μm) on a support 2C of hexagonal boron nitride (for example, Denka boron nitride sintered body manufactured by Denki Kagaku Kogyo Co., Ltd.). , line spacing 62.
The support body 2C and the electrode needles 1a are parallel electrical conductors with a resolution of 5 μm, that is, a resolution of 8 lines/U.

Support body 2a with only the connecting portion of 1b exposed.

The electrode needles 1a and 2b are fixed with an adhesive (not shown) so as to sandwich the electrode needles 1a and 2b. The base substrate 3 includes drive ICs 4a, 4b and a circuit board 7a.

7b is attached, electrode needles 1a, lb and drive IC 4
a, 4b and the circuit board? a,? The electrical circuit (not shown) formed on b is a thin wire conductor 5a.

5b, 6a, and 6b are connected using the TAB method, and the circuit board 17i is connected.
7a, 7b and the connector 10 are conductor wires 11a.

11b. And the support body 2a.

The protective cover can be attached to a part of the back side of block 2b using blocks 8a and 8.
b is fixed with an adhesive (not shown), and the protective covers lla and llb are attached with screws 12. FIG. 3 shows the operating principle of a discharge printer, in which electrical signal energy from an electrical signal source 13 passes through the electrode needles 1a, lb and the ground electrode 14 to remove the metal vapor deposited layer 16 on the recording medium 15, thereby printing and recording. Out. Electrode needle 1a during recording.

1b gradually wears out due to discharge, so the electrode needles la, l
Support 2a corresponding to the wear rate of b.

While scraping 2b and 2c with the recording body 13, the electrode needles la,
By making the lb slightly protrude from the supports 2a, 2b, and 2c, stable recording can be performed continuously. However, in the case of an electrode head having such a structure, the support is deflected by the platen load and the tension of the recording medium during print recording, making it impossible to perform stable print recording. Moreover, since this electrode head prints and records while scraping the support, it is necessary to lengthen the support according to the required lifespan, and the longer the lifespan, the longer the support becomes and the structure becomes more flexible.

Problems to be Solved by the Invention As mentioned above, in an electrode head that has a structure in which a block is fixed by attaching a protective cover to a part of the support, the support flexes due to the platen load and the tension of the recording medium during print recording, making it difficult to record stable prints. The problem was that it was not possible.

Means for Solving the Problems In view of the above-mentioned problems, the present invention provides a second support that holds an electrode needle disposed on a first support. The purpose of attaching a protective cover to the entire back surface of either one of the third supports is to obtain an electrode head capable of stable print recording by fixing the block.

Function: In the present invention, the support of the electrode head has sufficient strength against the platen load and the tension of the recording medium by the above-described means, so that stable print recording can be performed.

EXAMPLE Hereinafter, an electrode head according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of the electrode head of the present invention.

In FIG. 1, electrode needles 1a and lb are made of electrolytic copper in the form of stripes (vA width 62.5 μm , a line spacing of 62.5 μm1 (resolution of 8 lines/fi), and the supports 2a and 2b are connected with only the connecting portions of the support 2c and the electrode needles 1a and lb exposed. Electrode needle 1a, lb
It is fixed with an adhesive (not shown) so as to sandwich it.

Drive ICs 4a, 4b and circuit boards 7a, 7b are attached to the base board 3, and the tti needles 1a, lb and the drive IC
4a, 4b and circuit board 7a, ? The electrical circuit (not shown) formed on b is a thin wire conductor 5a.

5b, 6a, 6b are connected by the TAB method, and the circuit board 7a
, 7b and the connector 10 are connected by conductor wires 9a, 9b. Then, a block 9a is used to attach the protective cover to a part of the back surface of the support body 2a, and a block 9b is fixed to the entire back surface of the support body 2b with an adhesive (not shown). 11b was attached to complete the electrode head. The operation of the electrode head configured as described above will be explained.The electrode head of the present invention receives the platen load and recording tension during print recording by the support and the protective cover fixed to the entire back surface of the support by the block. As a result, sufficient strength of the support portion can be obtained, eliminating bending and allowing stable print recording.

Effects of the Invention As is clear from the above explanation, the present invention has a second support which holds a T scratching needle disposed on a first support. By fixing the block to the entire rear surface of either of the 3rd sides, it is possible to obtain sufficient strength against the platen load and the tension of the recording medium, eliminating deflection of the support and ensuring stable printing records. It is possible to obtain an electrode head that can be used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an electrode head according to an embodiment of the present invention, FIG. 2 is a block diagram of a conventional electrode head, and FIG. 3 is a diagram of the operating principle of a discharge printer. la, lb... Electrode needle, 2a, 2b, 2c...
... Support body, 3 ... Base substrate, 4a, 4
b...Drive IC, 5a, 5 b, 6
a, 6 b・----Thin wire conductor, ? a, 7b・
...Circuit board, 8a, 8b...Protective cover installation block, 9a, 9b...Conductor wire, 10
...... Connector, 11a, 11b... Protective cover, 12... Screw, 13... Electric signal source, 14... Earth electrode, 15...
-Recording body, 16...Metal deposited layer.

Claims (2)

[Claims] (1) A plurality of electrode needles are formed on a part of the back surface of one of the second and third supports that sandwich the plurality of electrode needles disposed on both main surfaces of the first support, and on a part or the entire surface of the other back surface. An electrode head characterized in that a mounting block for a protective cover that protects a base substrate, a drive IC, and a circuit board connected to the support body of No. 1 is fixed. (2) The electrode head according to item (1), wherein the first, second, and third supports are made of a sintered body containing hexagonal boron nitride.