JPH07112741B2 - Recording device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a recording apparatus for recording such as printing.

[Technical background of the invention and its problems]

As a recording apparatus of this type, a recording apparatus having a structure as shown in FIG. 3 is conventionally known.

The electrostatic recording sheet 1 is a sheet capable of accumulating electrostatic charges,
The insulating layer 3 is formed on the conductive sheet 2, and the toner head 4 ′ moves relatively on the sheet 1. In the conventional toner head 4 ', a plurality of strip-shaped conductive magnetic material patterns 6 are formed on a non-magnetic insulating substrate 5 at regular intervals as shown in FIG.
The conductive pattern 7 electrically connected to each of them is formed. A magnet 8 is arranged so as to face the conductive pattern 7.

At the time of recording, the insulating layer 3 of the electrostatic recording sheet 1 is charged in advance, and the conductive magnetic toner 9 is evenly attached thereto by electrostatic force. In this state, while applying a pulse voltage corresponding to the information to be recorded from the pulse voltage source 10 between the conductive pattern 7 and the conductive sheet 2, the electrostatic recording sheet 1
Passing under the toner head 4'in the direction of the arrow,
The electrostatic recording sheet 1 is selectively neutralized in response to the application of the pulse voltage, the conductive magnetic toner 9 on that area loses its adhesive force, and is separated by the magnetic force of the magnet 8. Therefore, if the pulse power source 10 is modulated (turned on or off) according to the information to be recorded, recording can be performed on the electrostatic recording sheet 1 with the conductive magnetic toner 9.

As a specific design example of the toner head 4'in such a recording apparatus, for example, when printing recording is performed at a density of 8 lines / mm, the width of the conductive magnetic material pattern 6 is about 50 μm. Further, the thickness of the conductive magnetic material pattern 6 is 50 μm because it is necessary to sufficiently attract the toner 9.
Degree is necessary.

As described above, in the conventional toner head, the conductive magnetic material pattern needs to have a thickness of at least about 50 μm in order to sufficiently adsorb the toner as a magnetic material. However, since the conductive magnetic material pattern acts as an electrode for applying a pulse, a dot having a width of 50 μm or more is formed in the sub-scanning direction (the moving direction of the electrostatic sheet), resulting in a reduction in resolution. Have.

Further, if the conductive magnetic material pattern 6 having such a width and thickness is to be formed by, for example, sputtering or dry etching, it takes about 24 hours for sputtering and about 20 hours for dry etching, which results in extremely high productivity. It is difficult to put it into practical use because it is low.

[Object of the Invention]

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a recording apparatus having a greatly improved resolution and a recording apparatus including a toner head having a structure that is easily manufactured. To do.

[Outline of Invention]

In the recording apparatus according to the present invention, the insulating substrate, the plurality of strip-shaped conductive electrode patterns formed on the insulating substrate, and the strip-shaped conductive electrode pattern formed on the strip-shaped conductive electrode pattern are electrically connected to each other. And a strip-shaped electrically conductive electrode pattern, the strip-shaped conductive electrode pattern and the magnetic sheet are integrally laminated, and the tip portion of the magnetic sheet and the tip portion of the strip-shaped conductive electrode pattern are formed. Are arranged to face the electrostatic recording sheet, the strip-shaped conductive electrodes selectively remove static electricity from the electrostatic recording sheet, and the magnetic material sheet selectively adsorbs toner on the electrostatic recording sheet. It is characterized by.

〔The invention's effect〕

According to the present invention, by forming a comb-shaped magnetic material sheet on the patterned conductive strip electrode,
The role of the electrode and the magnetic substance is given to the belt-shaped conductive electrode for the action of the electrode for selectively eliminating the static electricity on the electrostatic recording sheet, and the action for the magnetic substance sheet for selectively adsorbing the toner on the electrostatic recording sheet after the electricity elimination. It becomes possible to form the strip-shaped conductive electrode with a film thickness of 50 μm or less by sharing the above-mentioned factors. Since the strip-shaped conductive electrode can be formed small, the applied pulse width can be made sufficiently small and the resolution can be greatly improved.

Further, since the magnetic material sheet has a comb shape, the resolution in the main scanning direction (direction in which the strip-shaped conductive electrodes are arranged) is also improved.

Further, the production of the toner head can be achieved by applying a photoresist on both sides of one magnetic sheet in advance, exposing and developing, and then etching from both sides of the sheet to form a pattern, which has a width and a thickness of about 50 μm. Even a sheet can be easily patterned. Therefore, the productivity can be significantly improved as compared with the conventional one.

Example of Invention

1A and 1B are a perspective view and a sectional view of a toner head of a recording apparatus according to an embodiment of the present invention. The insulating substrate 5 is made of a non-magnetic insulating material such as glass or ceramic and is formed in a plate shape. This insulating substrate 5
A plurality of conductive electrode patterns 11 serving as individual conductors are formed on the upper surface, and a magnetic material sheet 13 previously formed in a comb shape is attached on the conductive electrode patterns 11 via an insulating sheet 12.

Here, the following method can be used to previously form the comb-shaped magnetic sheet 13. That is, first 50
A magnetic sheet having a thickness of μm is prepared. This magnetic material sheet is a conductive magnetic material sheet containing iron, for example.
Next, a photoresist is applied to both sides of the magnetic sheet, exposed and developed, and then an etching solution is sprayed from both sides of the sheet to form a comb-shaped pattern. By using the double-sided etching method in this way, the pattern formation speed is greatly improved, and since the individual magnetic electrodes do not come apart due to the comb shape, it is easy to etch with a width of 50 μm. You can do it.

2A and 2B show the configuration of the recording apparatus of the present invention. In the figure, 14 is a magnet, and the magnetic force lines generated from this magnet 14 are the branch portions 13-1 and 13 of the comb-shaped magnetic material sheet 13.
-2, 13-3 ..., and the conductive magnetic toner 9 previously attached on the insulating layer 3 on the conductive sheet 2 is attracted by being divided for each bit. In this state, the conductive electrode 11
When the electrostatic recording sheet 1 is passed below the toner head 4 while applying a pulse voltage corresponding to the information to be recorded from the pulse power supply 10 between the electroconductive recording sheet 1 and the electroconductive sheet 2, the electrostatic recording sheet 1 receives the pulse voltage. The toner 9 on that area loses its adhesive force and is separated by the magnetic force of the magnet 14.

In this way, the operation works without any problem, and high-resolution recording can be realized.

The present invention is not limited to the above embodiment,
If the magnetic sheet 13 is non-conductive, the insulating sheet 12 is unnecessary. In addition, the present invention can be variously modified without departing from the scope of the invention.

Further, the present invention is a recording apparatus for recording by recording a conductive magnetic toner evenly adhered onto an electrostatic recording sheet, and then selectively discharging the toner by a toner head to separate the toner. The toner head shown in FIG. 2 can also be used in a recording apparatus for recording by selectively attaching toner to the electrostatic recording sheet by the toner head.

[Brief description of drawings]

1A and 1B are a perspective view and a sectional view of a toner head of a recording apparatus according to an embodiment of the present invention, and FIG. 2A and FIG.
(B) is a diagram showing the configuration of the recording apparatus of the present invention using the toner head of FIG. 1, FIG. 3 is a diagram showing the configuration of a conventional recording apparatus, and FIG. 4 is a side view of the conventional toner head. is there. 1 ... Electrostatic recording sheet, 2 ... Conductive sheet, 3 ... Insulator layer, 4 ... Toner head, 5 ... Insulating substrate, 6 ...
… Band-shaped conductive magnetic material, 7 ... conductive pattern, 8 ... Magnet, 9 ... Toner, 10 ... Pulse voltage source, 11 ... Band-shaped conductive electrode pattern, 12 ... Insulation sheet, 13 ... Magnetic Body sheet, 14 ... Magnet

Claims (1)

[Claims] 1. An electrically insulating substrate, a plurality of strip-shaped conductive electrode patterns formed on the insulating substrate, and the strip-shaped conductive electrode patterns formed on the strip-shaped conductive electrode pattern are electrically insulated from each other. And the strip-shaped conductive electrode pattern and the magnetic sheet are integrally laminated, and the tip of the magnetic sheet and the tip of the strip-shaped conductive electrode pattern are electrostatically formed. The strip-shaped conductive electrodes are arranged to face the recording sheet, the electrostatic recording sheet is selectively neutralized, and the magnetic sheet selectively adsorbs the toner on the electrostatic recording sheet. Recording device.