JPH11320945A - Electrode, method for forming the same and electrode unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an aspect ratio of an edge face of an electrode wire section to be nearly one when the electrode wire section is of a type of thin film. SOLUTION: This electrode comprises a substrate 11, a thin film type electrode wire section 12 formed on the top face of the substrate 11 and a mold section 13 that covers the external faces of the substrate 11 and electrode wire section 12. One edge face of the electrode wire section 12 is diagonally cut to make an inclined face 12A. As a result, a dimension L of the edge face of the electrode wire section 12 in the height direction is formed to be greater than the thickness (t) of the electrode wire section so that the ratio of the dimension L with a dimension L1 in the lateral direction becomes near 1:1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode, a method for forming the same, and an electrode unit, and more particularly, to an electrode having an enlarged end surface exposed area of an electrode wire, a method for forming the same, and an electrode unit.

[0002]

2. Description of the Related Art Recently, an ink film is formed on a rotating drum made of a metal member using conductive ink by computer control, and a character pattern or the like is formed by energizing and coagulating (solidifying) ink dots. After that, a high-speed printing system for transferring to a predetermined sheet has been developed (for example, see FIGS.
4). This high-speed printing system is a direct printing system (electronic image forming system) that does not require a plate, and has an advantage that a clear and uniform printed matter can always be printed regardless of the number of prints.

In the printing system of this method, when the ink dots on the rotating drum are energized and coagulated (solidified), the ink dots are set between a fine pitch electrode provided on the rotating drum and a metallic rotating drum. The ink dots are agglomerated and solidified by instantaneous energization, and thereafter, only the solidified image is formed by scraping unimaged ink that has not been energized (image revealing), which enables high-speed transfer to the specified paper It has become.

[0004] In this case, adjacent ink dots are in an overlapping state or almost in contact with each other, and the ink dots at positions several dots apart from each other are inevitable for minute characters and the like. Is set to a minute interval. For this reason, the diameter and the interval between the electrode wires of the fine pitch electrode for performing the current aggregation (solidification) are often in the unit of μm.

As electrodes used in the above-described high-speed printing system, for example, as shown in FIGS.
An electrode wire 10 is attached to a glass plate 100 as a pair of upper and lower insulating materials.
1 are arranged at equal pitch intervals and sandwiched, and the end faces of the respective electrode wires 101 are arranged on the same plane to enable energization.

As another electrode, an electrode is used in which a conductive member disposed on a substrate is etched to form a thin-film electrode line portion, and the outer surface of the electrode line except the end surface is covered.

[0007]

However, in the former electrode, since a core-shaped electrode wire 101 is used, there is a certain limit in forming a fine pitch between the electrode wires 101. However, there is an inconvenience that processing for maintaining a uniform pitch is also very troublesome.

In the case of forming an electrode by etching,
The aspect ratio, that is, the aspect ratio, when the electrode wire is viewed from the end face, that is, the aspect ratio, cannot be made close to 1: 1. This is a factor that greatly reduces the above-described ink dot aggregation accuracy.

[0009]

SUMMARY OF THE INVENTION The present invention has been devised in view of the disadvantages of the prior art, and its object is to set each electrode wire at equal intervals and with high precision, and to provide an end face of the electrode wire. An object of the present invention is to provide an electrode capable of improving the dot aggregation accuracy by making the aspect ratio as close as possible to 1: 1 as much as possible, a method of forming the electrode, and an electrode unit.

[0010]

In order to achieve the above object, an electrode according to the present invention comprises: an electrode wire portion formed on a substrate in a relatively thin film shape relative to the substrate; And a mold part for covering the outer surface of the part, and at least the electrode wire part is cut obliquely so that the end face of the electrode wire part is formed as an inclined surface. Here, the inclination angle at which the electrode wire portion is cut obliquely is not particularly limited, but is set within a range in which the vertical dimension and the horizontal dimension of the end face of the electrode wire portion are as close to 1: 1 as possible. Can be. By adopting such an end shape of the electrode wire, it is possible to improve the accuracy of aggregation of ink dots when the present electrode is applied to the high-speed printing system described above. The electrode goes through an electrode line forming step of forming an electrode line portion, a molding step of covering the electrode line formed in the electrode line forming step, and a cutting step of obliquely cutting an end face of the electrode line portion. Can be obtained by:

Further, the electrode unit according to the present invention comprises a printed circuit board provided with an electrode portion in which end faces of a plurality of electrode wires are linearly arranged and exposed; An electrode drive circuit section for driving a wire in response to an external command, a connector section for receiving an external drive command for the electrode drive circuit section, a wiring section for connecting these sections to be individually operable, and covering the electrode section A mold portion to be cut, the electrode wire portion is cut obliquely, and the end face of the electrode wire portion is exposed so as to be an inclined surface,
The configuration is adopted. With such a configuration, in addition to having the above-described effects, the connection work between the electrode portion and the printed circuit board is not required, and workability particularly during maintenance and the like is improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a cross-sectional view of a main part of an electrode according to a first embodiment, and FIG. 2 is a view taken in the direction of arrow A in FIG. I have. In these figures,
The electrode 10 is provided on a substrate 11 made of glass, ceramic, or the like, and is provided on the substrate 11 in a thin film shape relatively to the substrate 11, and has a thickness t of 1 with respect to the width L1. / 2, and a mold part 13 made of an insulating material such as glass which is disposed on the upper surface side of the substrate 11 and the electrode wire part 12 and covers the substrate 11 and the electrode wire part 12. It is provided with. Here, for example, copper (C
u), nickel (Ni), Fe-Ni (iron-nickel)
Alternatively, it is formed using a conductive member such as Fe-Ni-Cr (chromium) as a raw material.

The right end face of the electrode 10 in FIG. 1 is a portion directed toward the rotating drum in the high-speed printing system described above, and the right end face is cut in an oblique direction so that the end face of the electrode wire portion 12 is formed. It is formed so as to be an inclined surface 12A. At this time, in the present embodiment, the right end face of the electrode 10 is cut obliquely as a whole, but it may be cut so that at least the end face of the electrode wire portion 12 becomes an inclined face.

By forming such an inclined surface 12A, the vertical dimension L of the electrode wire portion 12A becomes larger than the thickness t of the electrode wire portion 12, and is 1: 1 with respect to the horizontal size L1. It will be provided so that it may approach. Therefore, even when the thin film electrode wire portion 12 is employed, the accuracy of ink dot aggregation in a high-speed printing system can be improved.

In forming the electrode 10, FIG.
As shown in (A), a conductive surface 15 is provided on the upper surface of a substrate 11 with a material having good conductivity such as copper, and the electrode surface 12 is formed at predetermined intervals by etching the conductive surface 15. (See FIG. 3B). Then, as shown in FIG. 3 (C), after providing the mold portion 13 on the upper surface of the substrate 11 and the electrode wire portion 12, a cutting process is performed so that one end thereof becomes the inclined surface 12A. The electrode 10 having the end face structure to be formed can be formed.

[Second Embodiment] Next, a second embodiment of the present invention will be described.
Will be described with reference to FIG. In the second embodiment, a printed circuit board provided with an electrode drive circuit section and the like is
The present embodiment is characterized in that an electrode portion in which the electrodes 10 according to the first embodiment are arranged in layers is directly provided and integrated.

That is, in FIG. 4, reference numeral 20 denotes an electrode unit. The electrode unit 20 includes a printed circuit board 22 provided with an electrode portion 20A in which the electrode end faces of the plurality of electrode wire portions 12 are disposed on an oblique line and exposed, and an electrode wire portion 12 provided on the printed board 22. Drive circuit unit 24 such as an LSI for conducting conduction according to an external command
And a connector section 25 for receiving a drive command from the outside to the electrode drive circuit section 24, and a wiring section 26 for connecting these sections so as to be individually operable. In FIG. 4, reference numeral 27 denotes an adhesive layer for laminating and integrating the electrodes 10 obtained in the first embodiment.

According to the second embodiment, the same operation and effect as those of the first embodiment are provided, and the workability is improved when the electrode drive circuit 24 and the like are maintained. There is.

The present invention is not limited to the above embodiments, and various design changes can be made as long as the inclined surface 12A of the electrode wire portion 12 is formed and a constant aspect ratio is obtained. is there.

[0021]

As described above, according to the first and second aspects of the present invention, the end face of the electrode wire portion is formed as an inclined surface to increase the exposed dimension of the electrode wire portion in the height direction. Since the electrode can be provided and the aspect ratio can be improved, when the electrode is applied to a high-speed printing system, an unprecedented excellent effect that the aggregation accuracy of ink dots can be improved can be obtained.

According to the third aspect of the present invention, the connection work between the electrode section and the printed circuit board becomes unnecessary, so that the workability in maintenance and the like can be improved, and the signal processing of the electrode drive circuit section and the like can be performed. It is also possible to improve workability in maintenance of a circuit (LSI) and the like.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a first embodiment of the present invention.

FIG. 2 is a side view of FIG. 1 viewed from a direction A.

FIGS. 3A to 3C are explanatory diagrams illustrating a method for forming an electrode according to the first embodiment.

FIG. 4 is a schematic side view showing a second embodiment of the present invention.

FIG. 5 is a schematic exploded perspective view showing a conventional electrode forming method.

FIG. 6 is a schematic perspective view showing a conventional electrode.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Electrode, 11 ... Substrate, 12 ... Electrode wire part, 12A ... Inclined surface, 13 ... Mold part, 20
... Electrode unit, 20A ... Electrode part, 22 ...
Printed circuit board, 24 ... electrode drive circuit section, 25 ...
Connector part, 26 ... wiring part

Claims (3)

[Claims] An electrode wire portion formed on the substrate in a thin film shape relatively to the substrate, and a mold portion covering outer surfaces of the substrate and the electrode wire portion, wherein at least the electrode wire portion is provided. An electrode which is cut obliquely and formed such that an end surface of the electrode wire portion becomes an inclined surface. 2. An electrode line forming step of forming an electrode line portion on a substrate, a molding step of covering the electrode line formed in the electrode line forming step, and cutting at least obliquely cutting an end face of the electrode line portion. And a method for forming an electrode. 3. A printed circuit board provided at one end with an electrode portion having end faces of a plurality of electrode wires arranged linearly and exposed, and a printed circuit board provided on the printed circuit board, the electrode wires being responsive to an external command. An electrode drive circuit section that drives the electrode section, a connector section that receives an external drive command to the electrode drive circuit section, a wiring section that connects these sections so as to be individually operable, and a mold section that covers the electrode section. An electrode unit, wherein the electrode wire portion is cut obliquely and exposed such that an end surface of the electrode wire portion becomes an inclined surface.