JPS6072733A - Electrode head - Google Patents

Abstract

PURPOSE:To eliminate the deterioration of the quality of printing by forming the thickness in the direction perpendicular to the laminating direction of a laminate by twice or less of laminating pitch, thereby obviating the increase in the contacting area with a recording medium by wear due to contact with the medium. CONSTITUTION:The thickness (t) of a laminate is formed in the same size as the pitch (l) of a laminated layer. Thus, even if the end of an electromagnetic head is worn due to the discharge or friction at the printing time, the contacting area of an electrode head with discharge destructive recording sheet does not increase, but constant contacting area can be always maintained. Accordingly, a polishing mechanism for holding the containing area constantly can be eliminated, the resolution of printing in the advancing direction of the head can be set to the same as the resolution in the laminating direction. Even if the thickness (t) of the laminate is increased to twice of the pitch (l) of the laminated layer, the resolution is deteriorated in response to the thickness of the laminated, but the quality of printing can be preferably maintained. When the thickness of the laminate exceeds twice of the pitch of the laminated layer, the shape of the dots to be printed becomes unstable, and the quality of printing is deteriorated.

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.

Conventional configurations and their problems In recent years, with the spread of office automation, the demand for recording devices that convert electrical signals into visible images, so-called printers, has increased, and higher quality performance has been required. Various types of recording devices have been created.

The electrode head already proposed by the present inventors will be described below with reference to the drawings. FIG. 1 is a perspective view of the writing part of the discharge breakdown recording device proposed by the present inventors.

The discharge breakdown record is evaporated aluminum layer 12, black layer 13. The vapor-deposited aluminum layer of the discharge breakdown recording paper 11 consisting of the base paper layer 14 was grounded, and an electrode head to which a voltage was applied was brought into contact with the vapor-deposited aluminum layer.

The vapor-deposited aluminum layer in the contact area of the third page is removed by heating or discharge destruction to expose the underlying black layer for recording.

As such, an electrode head that is capable of high-resolution recording has been proposed, in which the tip of the stacked body 3 in which electrically conductive layers 1 and electrically insulating layers 2 are alternately stacked is shaped into a V-shape. Since the tip of the character 7 is pressed against a recording medium such as discharge destruction recording paper, the contact surface of the electrode head with the recording medium is worn out due to discharge and friction, increasing the contact area and deteriorating print quality. In order to prevent deterioration of print quality due to this wear, a polishing device is required to keep the tip of the electrode head in a constant shape, which complicates the structure of the recording device.

OBJECTS OF THE INVENTION An object of the present invention is to prevent the contact area between the tip of the electrode head and the recording medium from increasing even when the electrode head is worn.

An object of the present invention is to provide an electrode head that enables high-resolution recording.

Structure of the Invention The electrode head of the present invention includes electrical conductor layers and electrical insulator layers that are alternately stacked at a constant pitch to form a laminate, and the laminate has a thickness in the direction perpendicular to the lamination direction. is constant in the vicinity of the contact portion with the recording body and is not more than twice the pitch, and one end of the portion of the laminate made to be less than twice the pitch is pressed against the recording bell body; This is characterized in that recording is performed by passing current between the electrically conductive layer and the recording medium, and as a result, the contact area with the recording medium does not increase due to wear caused by contact with the recording medium, and the print quality is improved. This realizes an electrode head using a laminate that does not deteriorate.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2a is a perspective view of an electrode head and a recording medium in one embodiment of the present invention. In FIG. 2a, 11 is discharge breakdown recording paper, a vapor-deposited aluminum layer 12, a black layer 13. It consists of a base paper layer 14, to which an electrode head 10 consisting of an electrically conductive layer 8 and an electrically insulating layer 9 is brought into contact for recording. The principle of recording has been explained in the conventional example, so it will be omitted for 5 pages. Further, FIG. 2 is a sectional view of the surface of the electrode head that comes into contact with the discharge breakdown recording paper, and in this embodiment, the pitch β of the lamination and the thickness t of the lamination are made to be the same size.

The feature of this embodiment is that the thickness t of the laminate is made equal to the pitch l of the laminate, and ■ Even if the tip of the electrode head is worn out due to discharge or friction during printing, the electrode head and discharge The contact area with the destructive recording paper does not widen and a constant contact area can be maintained at all times, eliminating the need for a polishing mechanism to keep the contact area constant. It has the feature that it is possible to make the resolution the same as the resolution in the stacking direction. This is a feature that cannot be obtained in the conventional example described above.

In this example, the thickness of the laminate was made the same as the pitch of the laminate, but even if the thickness of the laminate was increased to twice the pitch of the laminate, the image quality would depend on the thickness of the laminate. Although the print quality deteriorates accordingly, the print quality remains good.If the thickness of the laminate exceeds twice the pitch of the laminate, the shape of the printed dots becomes unstable and the print quality deteriorates.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a perspective view of an electrode head according to another embodiment of the present invention. In FIG. 3, 8 is an electrically conductive layer, 9 is an electrically insulating layer, and 10 is an electrode head consisting of the electrically conductive layer 8 and the electrically insulating layer 9. Detailed explanation will be omitted. An electrically insulating support 16 is provided on the rear side with respect to the direction of movement of the electrode head.

For example, the thickness of the laminate is 100 μm if the printing resolution is 10 dots per 1 rrrIn;
If there are 20 dots per layer, the thickness is 60 μm, and the higher the resolution, the thinner the layer becomes, making the laminate more likely to break. To solve this problem, it is possible to prevent the laminate from folding by providing a support behind the electrode head. However, when a resin is used for the support, the support may be deformed by the heat generated by discharge during printing, making it difficult to obtain stable printing. It is recommended to use an alumina substrate or the like that has good thermal conductivity.

FIG. 4 on page 7 is a perspective view of an electrode head according to still another embodiment of the present invention. In FIG. 4, the electrode head 10, the electrically conductive layer 8, and the electrically insulating layer 9 prevent the
To prevent dust and debris from adhering to areas other than the contact surface with the recording medium during recording. In addition, it is also possible to send out the laminate when the contact between the laminate and the recording medium deteriorates due to wear. In the non-example, supports 1 and 1B were made of the same material, but they were made of different materials. FIG. 6 is a perspective view of an electrode head according to still another embodiment of the present invention.

In FIG. 6, the one-electrode head 10, the electrically conductive layer 8, and the electrically insulating layer 9 are the same as those in FIGS. 2, 3, and 4, and therefore their description will be omitted. If the end surface of the support is in the same plane as the contact surface of the electrode with the recording medium as shown in Figures 3 and 4, the contact between the support and the recording medium will cause scratches on the surface of the recording medium. GO-72733 (3) may be passed. In order to solve this problem, the support 19
By shortening the length of the support as shown in the figure, it is possible to prevent the support from coming into contact with the recording medium even when the electrode body is in contact with the recording medium, thereby preventing the recording medium from being scratched.

Further, the electrode head of the present invention can be used not only in the recording device described in the embodiment, but also in a recording device that performs recording by passing current between an electrical conductor and a recording medium.

Effects of the Invention As is clear from the above explanation, the present invention forms a laminate by alternately laminating electrical conductor layers and electrical insulating layers at a constant pitch, and the thickness in the direction perpendicular to the lamination direction is The laminate is formed so that the pitch is constant in the vicinity of the contact portion with the recording medium and is twice or less than the pitch, and one end of the portion of the laminate that is twice or less is pressed against the recording medium to form an electrical conductor. Recording is performed by energizing the connection between the layer and the recording medium, so the resolution of the print can be easily changed by simply changing the pitch of the lamination, and the 9/9 of the laminated body due to friction during printing can be easily changed. - Even when the laminate is worn out, the thickness of the laminate is constant, so the contact area with the recording medium remains unchanged, and the printing resolution can be kept constant, resulting in stable quality printing.

Furthermore, by providing an electrically insulating support on the opposite side to the moving direction of the laminate or in front and back, it is possible to prevent the thin laminate from breaking.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a perspective view of an electrode head already proposed by the present inventors, and Figs. 2 a and b are perspective views of an electrode head in an embodiment of the present invention, and a cross section of the electrode head. Figures, Figures 3 to 5
The figure is a perspective view of an electrode head in another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Electric conductor layer, 2... Electric insulator layer, 3... Electrode head, 6... Electric conductor layer, 6... ...electrical insulator layer, 7...
. . . to the electrode,)", , 8 . . . electrical conductor layer,
9... Electric insulator layer, 10... Electrode head, 11... Discharge breakdown recording paper, 12...
... Vapor-deposited aluminum layer, 13... Black layer, 14.
...Base paper layer. 16...Support, 17...Support, 1
8...Support, 19...Support. Funeral Figure 1 Figure 2 (Mountain 2 (b) Figure 3

Claims (4)

[Claims] (1) Electric conductor layers and electrical insulator layers are alternately laminated at a constant pitch to form a laminate, and the thickness of the laminate in the direction perpendicular to the lamination direction is the contact portion with the recording medium. The pitch is constant in the vicinity of , and is not more than twice the pitch, and one end of the portion of the laminate that is made not more than twice the pitch is pressed against the recording body, and the electrically conductive layer and the recording body are An electrode head that performs recording by applying current between the electrode head and the electrode head. (2) A support body is provided on the opposite side of the moving direction of the laminated body with respect to the direction in which the laminated body moves relative to the recording medium. electrode head. (3) The electrode head according to claim 1, characterized in that supports are provided before and after the laminate in the direction in which the laminate moves relative to the recording medium. 27・;・ (4) The electrode head according to claim 2 or 3, wherein the tip of the support does not contact the recording medium.