JPH0624866B2 - Recording device - Google Patents

Description

The present invention relates to an image forming method in which ink is ejected to form an image on a recording member.

"Prior Art" Various types of output devices have been developed for the purpose of outputting an image signal processed by a computer, a word processor, or the like.

Among these, the one that directly forms an image on a recording member such as a recording sheet is that the recording device itself can be downsized,
Because of its low price, it is regarded as the most suitable output device for small computers that have become widespread in recent years.

As such an output device, a wire dot system or an inkjet system is well known.

In the wire dot method, an ink ribbon coated with a pressure-sensitive wax and a recording paper are superposed, and a metal wire is struck from above to transfer the ink to perform recording.

Further, in the inkjet method, ink is contained in a sealed container, a pressure pulse is applied to the container, and the ink is ejected from an ejection port (orifice) of the container to perform recording.

[Problems to be Solved by the Invention] While these methods are effective in achieving miniaturization, they have the following problems.

First, in the wire dot method, noise is generated because the wire hits the ink ribbon. Further, in order to maintain the mechanical strength, the wire diameter cannot be made thinner than a certain value. Therefore,
It was difficult to increase the image density (the number of pixels in a unit area), and it was difficult to increase the resolution.

On the other hand, the ink jet system cannot reduce the size of the ink ejection mechanism due to its operating mechanism. Therefore, it is necessary to mechanically scan the ink ejection device in order to perform recording with a required image density. Therefore, the recording speed is reduced. Further, there is also a drawback that the ink ejection port is easily clogged due to the insoluble substance contained in the ink or the solidification of the ink itself.

The present invention has been made in view of the above points, and provides a recording apparatus capable of directly recording an image on a recording member at a high image density without causing problems such as ink clogging. The purpose is.

“Means for Solving Problems” In the recording apparatus of the present invention, a recording electrode in which a plurality of unit electrodes composed of a main electrode and an auxiliary electrode are provided on an insulating substrate, and a heat-meltable ink layer on the outer peripheral portion. The conductive support is formed so that the surface of the heat-meltable ink layer is always in contact with the insulating substrate that forms the recording electrode, and the main electrode and the auxiliary electrode that form the unit electrode for recording the recording electrode. A voltage applying means for applying a pulse voltage between the main electrode and the conductive support, and a means for receiving ink flying from the hot-melt ink layer by the voltage applying means. And a recording member supply means for supplying the recording member.

[Operation] As described above, in the present invention, the ink of the heat-fusible ink layer is caused to fly by applying a voltage between the unit electrode and the conductive support. The ink is locally melted by a spark discharge phenomenon generated between the unit electrode and the conductive support, and the ink flies toward the recording member and adheres to the recording member surface in a dot shape. This dot becomes one recording pixel.

The unit electrodes are arranged in a line so that each unit electrode records one pixel. An image can be recorded on these unit electrodes by selectively applying a voltage according to an image signal and simultaneously subscanning the recording member in the direction orthogonal to the row of unit electrodes.

Here, when pulsed voltages having different polarities are simultaneously applied to the unit electrode and the conductive support with respect to a predetermined reference potential, a potential difference corresponding to the sum of absolute values of the pulsed voltages is generated between them. Occurs.

As a result, recording can be performed using a pulsed voltage having a smaller absolute value than in the case where a pulsed voltage is applied to only one of the unit electrode or the conductive support.

Also, by heating or pressurizing the heat-meltable ink layer,
By smoothing the surface, it is possible to remove the irregularities generated on the surface of the heat-meltable ink layer after the ink has flown.

Also, by dividing the unit electrode into a predetermined number of electrode groups and shifting the timings of applying the voltages to the unit electrodes that form the electrode group and performing so-called time-division driving, it is possible to reduce the size of the power supply. You can

Furthermore, the unit electrode is composed of a main electrode and an auxiliary electrode, and an appropriate voltage is applied between the main electrode and the conductive support, while a discharge is generated between the main electrode and the auxiliary electrode. The discharge between the main electrode and the auxiliary electrode induces a discharge between the main electrode and the conductive support.

Thereby, the discharge starting voltage can be further reduced.

[Example] (Outline of recording apparatus) Fig. 1 is a schematic configuration diagram of a recording apparatus suitable for carrying out the present invention.

In this device, a heat-meltable ink layer 2 is formed on a conductive support 1, a recording electrode 5 having a plurality of unit electrodes 3 is arranged above it, and a recording member 6 is arranged above it. It has been configured.

The conductive support 1 is biased in the direction toward the recording electrode 5 by a spring (not shown) or the like to press the outer surface of the heat-meltable ink layer 2 against the recording electrode 5.

Further, a transport roll 7 is provided on the back surface of the recording member 6 and is configured to press the recording member 6 toward the recording electrode 5 by a spring or the like (not shown). The carrying roll 7 rotates in the direction of the arrow 8 to carry the recording member 6, and performs the sub-scanning.

At the same time, the conductive support 1 is also driven to rotate in the direction of arrow 9.

On the other hand, on the outer surface of the heat-meltable ink layer 2, a smoothing roll 11 is arranged so as to be in contact with the outer surface. The smoothing roll 11 is pressed against the hot-melt ink layer 2 by a spring or the like (not shown) and rotates in the direction of arrow 12. Also,
A heating means (not shown) is configured to heat the smoothing roll 11 to a predetermined temperature.

Further, a DC bias power supply 13 for applying a predetermined negative voltage to the ground potential is connected to the conductive support 1, and a first recording power supply 14 for applying a negative pulse is inserted in series with the DC bias power supply 13. Has been done.

Further, a DC bias power supply 16 for applying a predetermined positive voltage is also connected to each unit electrode 3 constituting the recording electrode 5, and a second recording power supply for applying a positive polarity pulse in series with the DC bias power supply 16. 17 is inserted.

The heat-meltable ink layer 2 is solid at room temperature in which carbon black, a coloring pigment, a coloring dye, and the like are dispersed in a binder such as wax and resin that dissolves and decomposes at a relatively low temperature.

Both the conductive support 1 and the unit electrode 3 are made of a conductive metal.

In order to explain the structure of the recording electrode, FIG. 2 shows a perspective view of the main part of the apparatus shown in FIG.

As shown in this figure, the recording electrode 5 has a structure in which a large number of needle-shaped conductors 3 (which are called unit electrodes in the present invention) are embedded in parallel in a spacer 4 made of an insulator. ing.

The tip of each unit electrode 3 is exposed in the through hole 10 provided in the spacer 4. Also, at the rear end of the unit electrode 3,
The second recording power source 17 and the DC bias power source 16 are connected to each other.

Returning to FIG. 1 again, it can be seen that the through hole 10 of the recording electrode 5 described in FIG. 2 is located just above the heat-meltable ink layer 2. As described later, the ink of the hot-melt ink layer 2 flies toward the recording member 6 through the through holes 10.

(Recording Operation) The apparatus configured as described above records an image as follows.

First, a pulse voltage is simultaneously applied to any of the unit electrodes 3 and the conductive support 1 from the first recording power source 14 and the second recording power source 17.

As a result, a discharge is generated between the unit electrodes 3 and the conductive support 1, and the discharge energy causes a part of the heat-meltable ink layer to be melted and softened and vaporized. The ink flies through the through holes 10 toward the surface of the recording member 6.

In this way, dots are recorded on the recording member 6.

Since the dots attached to the recording member 6 are carbon black, pigments, dyes, etc. dispersed in wax, resin, etc., they have a strong adhesive force and do not require any post-treatment such as pressurizing and heating.

(Role of Spacer) In the above embodiment, the unit electrode 3 and the heat-fusible ink layer 2
The distance between the outer surface and the outer surface has a great influence on the discharge starting voltage. That is, if the distance fluctuates randomly, the discharge generated between the conductive support 1 and the unit electrode 3 becomes unstable accordingly. Therefore, the heat-meltable ink layer 2 is constantly pressed against the spacer 4 to keep this distance stable.

Further, since the ink gradually diffuses during flight, it is necessary to keep the distance between the outer surface of the heat fusible ink layer 2 and the recording member 6 constant and to make the size of the recorded dots constant.

Further, if ink enters the gap between the recording member 6 and the recording electrode 5, the shape of the recorded dots will be disturbed.

Therefore, the transport roll 7 presses the recording member 6 against the spacer 5.

(Role of Smooth Roll) When a voltage is applied between the unit electrode 3 and the conductive support 1 and the ink near the surface of the heat-meltable ink layer 2 flies, irregularities are generated in that portion.

The heat-meltable ink layer 2 is synchronized with the sub-scanning of the recording member 6,
It rotates in the direction of arrow 9 in FIG. 1 together with the conductive support 1.
A smoothing roll 11 is provided in order to smooth the uneven portion again as it was.

The smoothing roll 11 can also smooth the surface of the heat-meltable ink layer 2 only by the pressing force. However, if the smoothing roll 11 is heated, the smoothing process becomes easier.

As a result, stable dot recording can be performed for a long period of time.

(Application of Recording Voltage) In order to perform the above recording, the following voltages may be applied between the conductive support 1 and the unit electrodes 3, respectively. In this embodiment, the recording electrode 5 has a thickness of 70 μm.
A unit electrode 3 made of nickel or tungsten and having a diameter of 50 μm and embedded in parallel at a density of 8 per 1 mm was used in an insulator of m to 200 μm.

3A to 3D are voltage waveform diagrams showing an example of the recording voltage applied to the conductive support 1 and the unit electrodes 3.

In this figure, the upper part represents the voltage applied to the unit electrode 3, and the lower part represents the voltage applied to the conductive support 1.

First, a DC bias voltage of -φRV (700V) is applied to the conductive support 1 in advance by the DC bias power supply 13 shown in FIG.

On the other hand, a DC bias voltage of + φCV is applied to the unit electrode 3 in advance by the DC bias power supply 16 shown in FIG.

The pulse width Δt (10 to 100) is supplied by the recording power source 14 and the second recording power source 17 shown in FIG. 1, respectively.
μsec) pulse voltage is applied. The polarities are opposite to each other.

The absolute values of these voltages are VR and VS (300
~ 700V).

First, as shown in FIG. 3A, the conductive support 1 and the unit electrodes 3 are formed.
When only the DC bias voltages φR and −φC are applied to both of the above, no discharge occurs between the two.

The potential difference (φR + φC) V of the two DC bias voltages is selected as such.

Next, as shown in FIG. 3 b or c, even when the pulsed voltage is applied to only the conductive support 1 or the unit electrode 3, that is, only one of them, no discharge occurs between the two.
The pulsed voltages VR and VC are selected to have such a voltage.

Then, as shown in FIG. 3d, when the pulsed voltages VR and VC are simultaneously applied to the conductive support 1 and the unit electrodes 3, discharge occurs between the two, causing ink to fly.

That is, (φR + VR) + (φC + VC) V (H in the figure
ΦR, VR, φC, and VC are selected so that discharge occurs only when a potential difference of (indicated by) is generated.

The discharge start voltage between the conductive support 1 and the unit electrode 3 is
It depends on the conductivity of the hot-melt ink layer 2. If the insulating property of the heat-meltable ink layer 2 is high, the discharge start voltage is high,
If the conductivity of the hot-melt ink layer is high, the discharge start voltage is low. This voltage is in the range of 1 to 10 KV in the case of the hot-melt ink layer 2 in which the ink having the volume resistivity of about 10 to 10 ⁶ Ω · cm is formed to the thickness of 1 cm to 2 cm.

Further, by repeating the recording, the thickness of the heat-meltable ink layer 2 formed on the conductive support 1 is gradually reduced. This also lowers the discharge starting voltage. Therefore,
The thickness of the heat-meltable ink layer 2 is detected by a predetermined sensor, and the voltage (voltage H in FIG. 3d) applied between the conductive support 1 and the unit electrode 3 is measured according to the decrease in the thickness. It is preferable to control so as to gradually decrease.

As a result, it is possible to prevent erroneous discharge caused by the voltage H being too high.

By doing so, the output voltage of the recording power supplies 14 and 17 connected to the conductive support 1 or the unit electrode 3 can be made sufficiently low.

This makes it possible to reduce the size of the drive power supply circuit.

(Other Method of Applying Recording Voltage) In FIG. 4, the voltage VR (upper stage) applied to the unit electrode 3 when the DC bias voltage is set to “0” and the voltage applied to the conductive support 1. The voltage −VC (middle) and the potential difference (VR + VC) generated between them (lower) are shown.

In this embodiment, a pulsed voltage −VC having a constant period is applied to the conductive support 1 regardless of the recording operation.

Here, the recording electrode 5 has, for example, the following configuration. That is, tungsten wires having a diameter of 90 μmφ are arranged in parallel at a density of 6 wires per 1 mm, and the wires are
0 μm polyester film (Toray Industries, Inc .: Lumirror)
I made something sandwiched between. The ends of each wire and the edges of the polyester film were aligned so as to be on the same plane.

Further, an aluminum rod having a diameter of 16 mm was used as the conductive support 1, and the heat-meltable ink layer 2 was formed on the aluminum rod so that the outer diameter was 30 mm.

The heat-meltable ink layer 2 was composed of 30% by weight of carbon black (Valcan XC-72R manufactured by Cabot, USA) and wax (Nissan Montan Wax 738 manufactured by Arakawa Chemical Industry Co., Ltd.).
A) A blending ratio of 70% by weight was used.

Again, returning to FIG. 4, the upper part of the drawing is shown as ON when dot recording is performed and OFF when no dot recording is performed.

When recording dots, a VR voltage is applied to the unit electrode 3, and the potential difference between the unit electrode 3 and the conductive support 1 is VR + VC, as shown in the figure. Further, when the dot recording is not performed, this potential difference is the maximum VC.

Here, in the figure, the discharge start voltage V1 and the discharge stop voltage V0 between the unit electrode 3 and the conductive support 1 are indicated by a chain line.
And are displayed.

That is, VR + VC is larger than the discharge start voltage V1, and VC is the discharge start voltage V1 and the discharge stop voltage V0.
It has been selected to be between.

Furthermore, in this embodiment, after the voltage VR + VC is applied between the unit electrode 3 and the conductive support 1 for a time t1, the pulse width is selected so that the potential difference between the two is always zero for a time t2. Has been done.

The time t1 is set to a time sufficient to generate the discharge required for recording, and the time t2 is set to a time sufficient to stop the discharge.

As a result, the ions around the unit electrode 3 after the discharge is diffused and erroneous discharge or the like thereafter can be prevented. This time t
According to the experiment, it was found that 2 is preferably about 20 μsec or more.

For example, the conductive support 1 is grounded and the unit electrode 3 is
A device is prepared in which dots of sufficient density are recorded when a pulsed voltage of 0 V and 100 μsec is applied. Using this device, the conductive support 1 is -200V, frequency 5K.
A pulsed voltage of Hz and a duty of 50% is applied in advance, and +200 V, 100 μse is synchronized with this pulse.
A pulse voltage for recording of c was applied to the unit electrode 3.

This also made it possible to record dots with sufficient density.

On the other hand, for comparison, a DC voltage of −200 V is continuously applied to the conductive support 1 and +200 V and 10 V are applied to the unit electrode 3.
When a pulse voltage for recording of 0 μsec was applied,
The dot shape may be disturbed, and erroneous discharge may occur in the portion of the unit electrode 3 to which no voltage is applied.

This is because the discharge is generated between any of the unit electrodes 3 and the conductive support 1 to ionize the periphery thereof,
Immediately after that, the discharge start voltage between them is lowered to cause an erroneous discharge, or the time until the discharge is stopped is prolonged between the unit electrode 3 that started the discharge and the conductive support 1. is there.

In the above method, these points are solved by appropriately providing a time during which no voltage is applied.

FIG. 5 shows another voltage applying method.

In this embodiment, the conductive support 1 is provided with + VC to -VC.
A voltage that changes regularly is applied periodically. Then, the recording pulsed voltage VR is applied to the unit electrode 3 at a frequency twice this cycle.

In this case, when recording dots, a voltage of VC + VR is applied between the unit electrode 3 and the conductive support 1, and this is selected to be higher than the discharge start voltage V1.
There is no difference from the embodiment shown in FIG.

However, in the OFF state where no dots are recorded, the potential difference between the unit electrode 3 and the conductive support 1 decreases to −VC, and a negative voltage is applied between them. By doing so, the ions between the unit electrodes 3 and the conductive support 1 generated by the discharge are neutralized, and the effect of preventing erroneous discharge is further enhanced.

In order to prevent reverse discharge, VC is selected so as not to reach the reverse discharge start voltage −V1.

(Divisional driving) As described above, the pulsed voltage is selectively applied between the unit electrodes 3 and the conductive support 1 to generate discharge, but discharge is generated in many unit electrodes 3. In this case, if so-called full line driving is performed, a large amount of discharge energy is required.

In order to reduce the size of the power supply circuit that supplies this discharge energy, it is advisable to perform the following division drive.

6 to 8 show circuits and time charts for explaining the driving method.

In FIG. 6, the unit electrodes 3 are arranged in the order of arrangement from the left to M.
It is divided into N sets of electrode groups 21 each. Then, the first unit electrode of each electrode group 21 is electrically connected to the lead wire E1, and similarly, the M unit electrodes are sequentially electrically connected to the lead wires E2 to EN.

On the other hand, the conductive support 1 is
It is divided into N with a width equal to the arranged width of each electrode group. This was designated as C1-CN.

For example, if a voltage is simultaneously applied between one of the unit electrodes of the electrode group 21 on the left end and the conductive support C1 on the left end by a pulse as shown in FIG. A dot is recorded at the position where

Here, as shown in FIG. 8, a pulsed voltage having a pulse width Δt is applied to the conductive supports C1 to CN in a time division manner.

That is, in this case, a pulsed voltage is applied to the conductive support C1 at the timing of time t1, and similarly, the same pulsed voltage is sequentially applied to the conductive support C2 to CN during the time t2 to tN. The voltage is applied exclusively.

On the other hand, for the unit electrode 3, as shown in FIG. 7, from the time t1 to tN, the pulse voltage is applied to the lead wires E1 to EM in the order of the first electrode group and the second electrode group. Are supplied at the same time. This pulsed voltage corresponds to the image signal to be recorded.

This makes it possible to sequentially and exclusively discharge the electrode groups 21 of each set from the left to the right end of the unit electrode 3 in the period from t1 to tN.

(Structure of Recording Electrode) The recording electrode 5, as shown in FIG.
Since they are arranged at a minute interval, the intervals of the through holes 10 provided therein are also very narrow, which may cause problems in manufacturing and strength.

Therefore, as shown in FIG. 9, the through holes 10 provided in the spacer 4 are arranged so as to be inclined with respect to the recording member transport direction 20 (sub-scanning direction). In this way, the mutual intervals of the through holes 10 can be made sufficiently wide.

In this case, since the dots to be recorded are displaced from each other in the sub-scanning direction, the image signals applied to the unit electrodes 3 are delayed by a fixed time and recording is performed.

In order to make the interval between the unit electrodes 3 wider, the through holes 10 may be arranged obliquely and the unit electrodes 3 may be alternately drawn out in a zigzag pattern in both directions as shown in FIG.

Further, as shown in FIG. 11, if the arrangement direction of the unit electrodes 3 and the conveyance direction 20 of the recording member are made orthogonal to each other,
The distance D ′ between the recording dots can be made shorter than the distance D between the unit electrodes 3.

When the recording electrode as described above is used, as shown in FIG. 12, the spacer 4 is used by being curved along with the heat-meltable ink layer 2.

(Use of seed flame discharge) As described above, the voltage applied between the unit electrodes 3 and the conductive support 1 for recording dots is preferably lower.

FIG. 13 shows an embodiment of an apparatus capable of causing discharge at a lower voltage.

In this device, there is no through hole in the recording electrode 5, and discharge is generated at one end edge thereof.

FIG. 14 shows the main part of the edge of the recording electrode 5. The spacer 4 is composed of two layers of insulators 41 and 42, and the main electrode 31 is arranged in parallel and embedded between them. Then, the auxiliary electrode 32 is arranged above it via the insulator 41. The main electrode 31 and the auxiliary electrode 32 form a unit electrode 3.

The spacer 4 is in contact with the heat-meltable ink layer 2, and the heat-meltable ink layer 2 is formed and supported on the conductive support 1 with a certain thickness.

Such a recording electrode 5 is driven by applying a pulsed voltage as shown in FIG.

First, a negative voltage −VB that changes in a constant cycle is applied between the main electrode 31 and the conductive support 1. This voltage has a value lower than the discharge start voltage between the conductive support 1 and the main electrode 31.

On the other hand, when dots are to be recorded, the voltage VT is applied between the main electrode 31 and the auxiliary electrode 32 in synchronization with the application of the voltage -VB.

The voltage VT is higher than the discharge start voltage between the main electrode 31 and the auxiliary electrode 32. The distance between the main electrode 31 and the auxiliary electrode 32 is set to be very small, and this voltage VT is relatively low, which is acceptable.

When the voltage VT is applied between the main electrode 31 and the auxiliary electrode 32, a discharge is generated here. By the discharge, the main electrode 3
1 is ionized around and is induced by this, and the main electrode 31
Electric discharge also occurs between the conductive support 1 and the conductive support 1.

That is, in this embodiment, even if the voltage applied between the main electrode 31 and the conductive support 1 is low, the discharge between the main electrode 31 and the auxiliary electrode 32 becomes a pilot fire and the discharge starts. Then, dots are recorded.

Also in this case, recording can be controlled by applying a relatively low voltage pulsed voltage between the auxiliary electrode 32 and the main electrode 31.

When discharge occurs between the unit electrodes 3 and the conductive support 1, a voltage drop occurs due to the discharge current. Due to this voltage drop, the discharge between the other electrodes during discharge may become unstable, and sufficient discharge energy may not be obtained.

Therefore, in FIG. 16, a resistor 33 is inserted in series between the second recording power source 17 for applying a pulsed voltage to the main electrode 31 and the main electrode 31.

When a discharge occurs, this resistance causes a voltage drop, and the discharge stabilizes.

In addition, this prevents the occurrence of erroneous discharge and promptly stops the discharge.

FIG. 17 shows another embodiment of the recording electrode 5 which causes such a pilot discharge.

In this embodiment, the main electrodes 31 and the auxiliary electrodes 32 are alternately arranged in parallel on the same plane. The same operation can be performed with such a structure.

"Modification" Almost the same recording can be performed even if the voltage applied between the unit electrode and the conductive support is reversed in polarity from that of the embodiment.

Further, in the above-mentioned examples, the conductive support and the heat-meltable ink layer are formed in a concentric and concentric shape, but it may have any shape capable of continuously supplying the heat-meltable ink layer, for example, an endless belt shape. It does not matter if it is a thing or a sheet.

Further, if the through hole provided in the spacer is circular, a circular dot can be recorded, but this may be another shape such as a square or a triangle.

[Advantages of the Invention] As described above, according to the present invention, the unit electrode is composed of two electrodes, that is, the main electrode and the auxiliary electrode. The voltage applied to the support can be reduced, and a high-density image can be recorded with high image quality by a small-sized and low-cost device.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a recording apparatus of the present invention, FIG. 2 is a perspective view of a main part thereof, and FIGS. 3, 4 and 5 are voltage waveforms for explaining a recording voltage applying method. 6 and 6 are wiring diagrams of unit electrodes and a conductive support for divisional driving, FIGS. 7 and 8 are time charts for driving them, and FIGS. 9 and 10.
FIG. 11 and FIG. 11 are plan views showing an embodiment of a recording electrode,
FIG. 12 is a schematic configuration diagram of a recording device using these, FIG. 13 is a schematic configuration diagram of another recording device suitable for carrying out the present invention, and FIG. 14 is a main part showing another embodiment of the recording electrode. FIG. 15 is an end view, FIG. 15 is a pulse-like voltage waveform diagram showing the driving method, and FIGS. 16 and 17 are end views showing the main part of another embodiment of the recording electrode. 1 ... Conductive support, 2 ... Hot-melt ink layer, 3 ... Unit electrode, 4 ... Spacer, 5 ... Recording electrode, 6 ... Recording member, 21 ... Electrode group, 31 ... Main Electrode, 32 ... Auxiliary electrode.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-157874 (JP, A) JP-A-59-39560 (JP, A) JP-B-49-47180 (JP, B1)

Claims (1)

[Claims] 1. A recording electrode having a plurality of unit electrodes composed of a main electrode and an auxiliary electrode provided on an insulating substrate, and a heat-meltable ink layer formed on an outer peripheral portion of the recording electrode, the insulating electrode constituting the recording electrode. A pulse voltage is applied between a conductive support arranged so that the surface of the heat-meltable ink layer is always in contact with the substrate, and a main electrode and an auxiliary electrode which form a unit electrode for recording the recording electrode. A recording member for supplying a voltage applying means for applying a high-voltage pulse voltage between the main electrode and the conductive support, and a recording member for receiving ink flying from the heat-meltable ink layer by the voltage applying means. A recording device comprising: a supply unit.