JPS6219477A - Current-sensitized transfer device - Google Patents

Abstract

PURPOSE:To use a heating sheet for a long time without discarding it and contrive a lower running cost of the device, by providing a heating sheet consisting of a resistor layer and a conductor layer in the form of an endless loop, and providing an ink coating means in a transfer device. CONSTITUTION:The heating sheet 11 consisting of the resistor layer 1 and the conductor layer 2 is passed over the ink coating means 12, with the conductor layer 2 opposed to a roller 17 in the coating means 12. An ink layer 3 is provided on the sheet 11 by coating to produce an ink sheet 19, and an electrode unit 8 and the resistor layer 1 of the ink sheet 19 make contact with each other. A recording paper 10 and the ink layer 3 of the ink sheet 19 are pressed by a pressure roller 9, upon which heat generated locally at the resistor layer 1 beneath a pin electrode 7A is transmitted to the heat-fusible ink layer 3 of the ink sheet 19, and an ink of the ink layer 3 is melted dotwise and is transferred onto a recording paper 10, thereby recording.

Description

[Detailed Description of the Invention] [Summary] Among the ink sheets for electrical transfer comprising a resistor layer, a conductor layer, and a heat-melting ink layer, a heat generating sheet comprising a resistor layer and a conductor layer constituting the sheet. This electric transfer device is formed by endlessly circulating a heat-generating sheet, and a device for applying ink to the heat-generating sheet is provided inside the transfer device, so that the heat-generating sheet can be used repeatedly, thereby reducing the running cost of the device.

[Industrial application field]

The present invention relates to an electric transfer device, and in particular, the transfer device is provided with an ink application mechanism, and a heat generating sheet is formed in an endless shape with a resistor layer and a conductive layer constituting the ink sheet of the transfer device, and ink is applied to the heat generating sheet. The present invention relates to an electrical transfer device that reduces running costs by extending the life of the ink sheet forming material by performing transfer recording while applying the ink sheet.

A resistor layer, a conductor layer, and a heat-melting ink layer are laminated,
A recording paper is placed on the ink layer side of an ink sheet that rotates endlessly, and an electrode unit consisting of a pin electrode and an electrode of the opposite polarity is pressed from the resistor layer side.
The current transfer device, which transfers the ink in the ink layer to the recording paper by energizing the electrode unit, can perform high-speed recording because there is no heat accumulation phenomenon in the head compared to thermal transfer recording devices using conventional thermal print heads. It is possible.

In such an electric transfer device, it is desired to maintain a long life of the material for forming the ink sheet and reduce the running cost of the device.

[Conventional technology]

FIG. 4 shows a conventional electrical transfer device as described above.
This will be explained using FIG.

As shown in FIGS. 4 and 5, resistor layer 1, conductor layer 2. An ink sheet 4 having a laminated heat-melting ink layer 3
is formed in an endless loop shape, and the conveyance roller 5
, 6 in the direction of arrow A.

A pin electrode 7A is placed at a predetermined position around this ink sheet 4.
An electrode unit 8 formed around the electrode 7A via the resin 13 and consisting of an electrode 7B of opposite polarity is brought into contact with the resistor layer 1 side of the ink sheet 4, and a pulse voltage is applied to the electrode unit 8. Apply.

Further, a pressure roller 9 is installed opposite to this electrode unit 8, and using this pressure roller 9, a recording paper 10 is laminated on the ink layer 3 between the pressure roller 9 and the electrode unit 8. be transported.

In this way, the ink layer 3 of the ink sheet 4 is partially melted and transferred and recorded onto the recording paper 10, and this electrode unit 8 is capable of handling the heat accumulation phenomenon like a thermal print head used in conventional thermal transfer recording. Therefore, even if printing is performed at high speed, an accident such as previously transferred and recorded information being retransferred onto the recording paper does not occur, making high-speed printing possible.

The ink sheet 4 used here is
An improvement on the one disclosed in Japanese Patent No. 22917, in which conductive carbon is dispersed in polycarbonate and the resistivity is 10-10.
It is formed by laminating a resistor layer 1 of 103Ω-2 and a conductor layer 2 made of metal aluminum on top of which a heat-melting ink layer 3 is provided, and the electrode unit 8 is made by IBM Technical. Disclo
Sure Bulletin Vol, 23+ No9
It has the same shape as that disclosed in .

[Problem that the invention seeks to solve]

By the way, in the ink sheet used for such transfer recording, after the transfer recording, the ink in the ink layer 3 is partially melted and transferred to the recording paper 10, so there are areas on the surface of the ink layer where the ink has drained. It has an uneven shape.

Therefore, if an ink sheet with an ink layer with an uneven surface is used for transfer recording, a transferred image of uniform density cannot be obtained, and the ink sheet is usually discarded once transfer recording is completed. There was a problem in that the consumption of water was large and the running cost of the device was high.

[Means for solving problems]

FIG. 1 is a schematic diagram showing the main parts of the current transfer device of the present invention.
As shown in the figure, the apparatus of the present invention laminates a resistor layer 1 and a conductor layer 2, which are constituent elements of an ink sheet, to form a heat generating sheet 11 in an endless loop shape, and a transport mechanism 5.
6 to circulate the sheet 11, while the heat generating sheet 11
An ink application means 12 is provided at a position separated by a predetermined distance from the electrode unit 8 that contacts the resistor layer 1 and the pressure roller 9 that opposes it.

[Effect]

In the current transfer device of the present invention, a heat generating sheet 11 consisting of a resistor layer 1 and a conductive layer 2 is formed in an endless loop shape, an ink applying means 12 is provided inside the transfer device, and an ink layer 3 is formed on the heat generating sheet 11. The heating sheet 11 coated with the ink layer 3 can be used for a long time without being discarded, thereby reducing the running cost of the apparatus.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing the main parts of the current transfer device of the present invention.
As shown in the figure, the apparatus of the present invention has a heat generating sheet 1 formed by laminating a resistor layer 1 and a conductor layer 2, which are constituent elements of an ink sheet.
11 is formed into an endless loop shape, and this heat generating sheet 1
A conveyance mechanism 5: 6 is provided to circulate the heat generating sheet 11, and an ink applying means 12 is provided at a predetermined position around the heat generating sheet 11.

Furthermore, a pin electrode 7 is placed in contact with the resistor layer 1 of the heat generating sheet 11 at a predetermined distance from the ink application means 12.
A heating sheet 11 is provided with an electrode unit 8 consisting of an electrode 7B in the opposite direction to the pin electrode 7A, and facing the unit 8, an ink layer 3 is formed by a coating means 12.
A pressure roller 9 is provided with the recording paper 10 interposed therebetween.

Here, as shown in FIG. 2, the heat generating sheet 11 described above is composed of a resistor layer 1 and a conductor layer 2 laminated thereon, and the thickness of the resistor layer 1 is suitably 5 to 10 μl. For example, good printing was obtained when polycarbonate in which conductive carbon black was dispersed was used, and the resistivity was set to 10 to 10<3>Ω.

The conductor layer 2 is formed by laminating aluminum foil, a vapor-deposited layer of metal aluminum, or a stainless steel film on the resistor layer 1 to a thickness of 0.1 μm to 1 μm.

Further, the electrode unit 8 has the structure shown in FIG.
This electrode 7 is composed of an electrode 7B surrounding it and having a polarity opposite to that of the electrode 7B.
A is formed by a tungsten needle with a diameter of 25 μm.

The operation of such an electric transfer device will be described with reference to FIG. 1 and FIG. The ink is passed over the ink application means 12 so as to face the rotating roller 17 of the application means 12 .

The ink applying means 12 includes an ink storage container 16 equipped with a heater 15 for melting a heat-melting ink 14 made of a low melting point material such as paraffin wax and a coloring material such as carbon black, and an ink storage container 16 installed in this container 16. It consists of a rotating roller 17. This rotating roller 17 is preferably one used in ordinary gravure printing. The rotating roller 1 is attached to the heat generating sheet 11 passing over the rotating roller 17.
In step 7, the hot-melt ink 14 is scraped up, and the ink is applied while controlling the thickness of the ink with a doctor blade 18.

In this way, the ink layer 3 is applied and formed on the heat generating sheet 11 to form the ink sheet 19.
9 reaches the electrode unit 8, and the electrode unit 8 and the resistance layer 1 of the ink sheet 19 come into contact.

Therefore, as shown in Fig. 3, using the electrode unit 8, the voltage between the electrodes 7^ and 7B is 5 to 50v1, and the pulse width is 0.1 to 50v.
A pulse signal of 10 seconds is sent, and the resistive masonry of the ink sheet 19 is selectively heated by this pulse signal. Further, the pressure roller 9 is used to press the recording paper 10 and the ink layer 3 of the ink sheet 12. Then, the partial heat generated in the resistance layer 1 directly under the pin electrode 7A is transmitted to the heat-melting ink layer 3 of the ink sheet 19 via the conductive layer 2, melting the ink in the ink layer 3 in dots and forming the recording paper 10. Record the transcription above.

The transfer density obtained on the recording paper in this way is 0, D
, had a value of 1.0 to 1.5, and printing with clear transfer density was obtained.

In this way, the heat generating sheet 11 can be used repeatedly, and the cost required for the material for forming the ink sheet 19 is therefore reduced, thereby reducing the running cost of the apparatus.

〔Effect of the invention〕

As is clear from the above description, according to the current transfer device of the present invention, the only member consumed in the -times of transfer is the transferred heat-melting ink, which consists of a resistor layer and a conductor layer. Since the heat generating sheet can be used repeatedly, it has the effect of reducing the running cost of the device.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the current transfer device of the present invention, FIG. 2 is a schematic diagram of the coating means of the device of the present invention, and FIG. 3 is a schematic diagram showing the state of the transfer section of the device of the present invention. FIG. 4 is a schematic diagram showing a conventional device, and FIG. 5 is a schematic diagram showing an ink transfer state. In the figure, 1 is a resistor layer, 2 is a conductor layer, 3i is an ink layer, 5.6 is a transport mechanism, 7A and 7B are pin electrodes, 8 is an electrode unit,
9 is a pressure roller, 10 is a recording paper, 11 is a heat generating sheet, 1
2 is an ink application means, 13 is a resin layer, 14 is a hot-melt ink, 15 is a heater, 16 is a container, 17 is a rotating roller, 18 is a doctor blade, and 19 is an ink sheet. @ 1 g Chapter 21! 1 The 51st school of scolding = AI 9 state material fighting or m $ 3 g + 4ur $ Lh Kyovsha KIXJ Chapter 4 diagram layer 4Σ71 bright state t/Fv figure on the cane @ 5 figure

Claims (1)

[Claims] An electrode unit having a pin electrode and an electrode of opposite polarity to the pin electrode is brought into contact with the resistance layer of the ink sheet consisting of a resistance layer, a conductor layer, and an ink layer, and a voltage is applied to the electrode unit. An electric current transfer device that melts the ink of the ink sheet and transfers it to a recording paper by applying an electric current to the ink sheet. 11), a conveyance mechanism (5, 6) for the heat generating sheet (11), and a transport mechanism (5, 6) for the heat generating sheet (11).
An ink coating means (12) for coating ink on the conductor layer (2) of 1) and an ink layer (3) coated on the heat generating sheet (11), which is in contact with the electrode unit (8). A heating sheet (1
1) A current transfer device characterized in that it is provided with a recording paper (10) that passes together with the recording paper (10).