JPS61185467A - Electrifying transfer device - Google Patents

Abstract

PURPOSE:To obtain a high-speed, low-running cost electrifying transfer device enabling a heating sheet and an ink roll to be used repeatedly by a method in which a heat-melt ink in a rolled form is separated from thermal sheet. CONSTITUTION:A heating sheet 10 which is turned by rotary feeding mechanisms 11 and 12 in such a way that the resistor layer 4 of the heating sheet 10 of an endless loop form is contacted with an electrode unit 14 is put between the unit 14 and a heat-melt ink roll 13. The resistor layer 4 is locally heated by current from the unit 14, and the heat serves to melt in spots the ink 16 of the ink roll 13 through a conductor layer 3 and to transfer the ink 16 to the layer 3 of the heating sheet 10. A heating roll 15 comes into contact with the surface of the roll 13 deprived of the ink 16 and melts the ink of the surface for smoothening. The ink 16 transferred to the layer 3 is pressed with a recording paper 7 between the heating mechanism 18 and the presser 19, again melted, and transferred in the form of spotted ink 20 to the paper 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a recording device, and particularly to an electric transfer device that is high-speed and has low running costs.

[Prior art]

The current-carrying recording material disclosed in JP-A-55-22917 has a semiconductive heat generating layer, which can contain a coloring material, and as shown in FIG. 3, a metal-containing resin layer 1, a semiconductive resin layer 2
, a conductive layer 3. The metal-containing resin rfj1 is a resistive layer 2i, and the semiconductive resin layer 2 is a resistive layer that can contain a coloring material.

When the pin electrode 14-a contacts the metal-containing resin layer 1, the current returns to the electrode 14-b of the opposite polarity via the semiconductive resin layer 2 and the conductive layer 3. At this time, the semiconductive resin layer 2 is the conductive layer 3.
At the same time, it is destroyed by discharge, adheres to the recording paper 17, and is transferred.

Note that the electrode unit 14 shown in FIG.
nical Disclosure Bulletin
It is of the same type as the electrode unit disclosed in Vol. 23+ m9, and has a pin electrode 14-a in the center. Such a recording apparatus can perform high-speed recording because there is no N heat generated by a thermal head in general thermal transfer recording.

〔problem〕

In the conventional recording device, the electrically conductive recording material is used as the protective layer 1.
The problem is that the manufacturing cost of the sheet is high because it is composed of one sheet consisting of multiple layers of resistor/ink rI2 and conductive layer 3, and the running cost is high because the entire material of one sheet is consumed in one recording. There is.

Note that the electrode unit 14 has a narrow tip surface, so recording IE1
7 cannot be pressed with sufficient force, so if the paper quality is rough, clear images cannot be obtained, and fixation after transfer is poor.

[Solution]

The above problem is that an electrode unit having a pin electrode and an electrode of opposite polarity, a resistive layer, a conductive layer, and a hot melt ink are arranged in contact with each other in this order, and a pulse voltage is not applied from the pin electrode. This is an electrical transfer device that applies heat to a resistive layer to generate heat, and uses this heat to locally melt the hot-melt ink and transfer it to recording paper, and is formed into an endless loop consisting of a resistive layer 4 and a conductive layer 3. A heat generating sheet 10,
An electrode unit 14, a heat-melting ink roll 13 that presses in cooperation with the electrode unit 14, an energization section that includes a heating roll 15 that comes into contact with the ink roll 13, and a heating mechanism 18 located at a distance from this and a heating mechanism 18 that cooperates with it. The heat-generating sheet 1-10 is rotatably conveyed through a transfer section provided with a pressing member 19 for operation, and the heat-generating sheet 1-10 is conveyed between the electrode unit 14 and the heat-melting ink roll 13 in the energization section. The resistance layer 4 of the heating sheet 1-10 is sandwiched between
is brought into contact with the electrode unit 14 and the heat-melting ink roll 13 is brought into rotational contact with the conductive layer 3 of the heat generating sheet lo to transfer the locally melted ink 16 to the conductive layer 3,
The surface of the ink is smoothed by bringing the heating roll 15 into rotational contact with the heat-melting ink roll 13 from which the ink 16 has passed, and in the transfer section, the heating sheet 10 and the recording paper 17 are placed between the heating mechanism 18 and the pressing member 19. This can be achieved by an electrically conductive transfer device which is provided so that the ink 16 on the conductive WiS of the heat generating sheet 10 is melted again and transferred onto the recording paper 17 by pressing the ink.

〔Example〕

First, the main parts of the electrical transfer device of the present invention shown in FIG. 2 will be explained.

The heat generating sheet 10 consists of a resistive layer 4 and a conductive layer 3. The resistive layer 4 has an appropriate thickness of 5 to 20 μm steel, and can be made of polycarbonate with conductive carbon dispersed therein. A resistivity of 10 to 1000 Ω was required for obtaining good printing. Further, as the conductive layer 3, an aluminum foil, a resistance layer made of aluminum vapor-deposited, or a stainless steel film can be used. The appropriate thickness of the conductive layer 3 is 0.1 to 1 μm.

The heat-melting ink roll 13 is made by dispersing a coloring material such as carbon black in wax, and forming the roll into a roll with a diameter of 30 mm, which is rotated while being pressed against the electrode unit 14. On the other hand, a heating roll 15 with a low diameter is used. ink roll 1
3 so that it is in rotational contact with it.

The electrode needle 14 is the IBM Bullet.
A pin electrode 14-a which is the same type as the electrode described in in,
It has a counter electrode 14-b surrounding it with an insulating layer interposed therebetween. The pin electrode 14-a is made of tungsten and has a diameter of 25 mm.
It is μm.

As shown in FIG. 1, the heat-generating sheet 10 is formed into an endless loop, and placed in the rotary photographing mechanisms 11 and 12 so that the resistance layer 4 is in contact with the electrode unit 14, and the peripheral speed is 0.1 to 1 m. /s and rotated at 4 energizing stations, the heat-generating sheet 10 is connected to the electrode unit 14 and the heat-melting ink roll 1.
3, and the resistor FM4 of the heat generating sheet 10 contacts the electrode unit 14.

A signal is sent from the electrode unit 1-14 at an interelectrode voltage of 5 to 50 V and a pulse width of 0.1 to Longs, and the electric current causes the resistor N4 of the heat generating sheet to locally generate heat by Joule heat. The conductive layer 3 of the heat-generating sheet 10 is a heat-melting ink roll 1
3, the pin electrode 14- of the electrode unit 14
The localized heat of the resistive layer 4 directly under a is transmitted to the ink layer 5 via the conductive layer 3, melting the ink 16 on the ink roll 13 in dots and transferring it to the conductive layer 3 of the heat generating sheet. The heating roll 15 contacts the surface of the ink roll 13 from which the ink 16 has passed, melting the ink on the surface and smoothing it. The ink 16 transferred to the conductive layer 3 is conveyed as the heat generating sheet 10 rotates, and is transferred to the heat generating sheet 10 in the transfer section.
is pressed together with the recording paper 17 between the heating mechanism 18 and the pressing member 19, and the ink 16 on the conductive layer 3 of the heating sheet 1-10 is melted again and transferred to the recording paper 17 as dots of ink 20. .

The obtained transfer results have a transfer density of 1.0 to 1.50. D.

I was able to get the printout.

〔Effect of the invention〕

Since the current transfer device of the present invention forms the heat-melting ink into a roll and separates it from the heat-generating sheet, the heat-generating sheet consisting of a resistive layer and a conductive layer and the ink roll can be used repeatedly, thereby reducing running costs. Since the surface of the hot-melting ink roll is smoothed by the heated roll, its service life can be extended, and since the transfer section is separated from the energized section, it transfers well even when the recording paper is rough. It can be established.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the current transfer device of the present invention, FIG. 2 is a sectional view of the current supply section of the current transfer device of the present invention, and FIG. 3 is a sectional view of the main part of the current transfer device of the prior art. It is. DESCRIPTION OF SYMBOLS 1... Metal-containing resin (protective) layer, 2... Semiconductive resin (resistance and ink) layer, 3... Conductive layer, 4... Resistance layer, 10... Heat generating sheet, 11, 12...Rotate li! ! Feeding mechanism, 13... Heat-melting ink roll, 14... Electrode unit, 14-a... Pin electrode, 14-b... Opposite polarity electrode, 15... Heating roll, 16... Transfer ink on heat generating sheet, 17.
...Recording paper, 18...Heating mechanism, 19.
...Press member, 20...Transfer ink on recording paper. Figure 1 Figure 2

Claims (1)

[Claims] 1. An electrode unit having a pin electrode and an electrode of opposite polarity, a resistive layer, a conductive layer, and a heat-melting ink are arranged in contact with each other in this order, and from the pin electrode It is an electrical transfer device that applies a pulse voltage to a resistive layer to generate heat, and the heat melts the hot melt ink locally and transfers it to recording paper. The heat-generating sheet 10 thus formed, an electrode unit 14, a hot-melting ink roll 13 that cooperates with the electrode unit 14 to press, an energizing section that includes a heating roll 15 that contacts this ink roll 13, and a section located away from this. It has mechanisms 11 and 12 for rotating and conveying the heat-generating sheet 10 through a transfer section provided with a heating mechanism 18 and a pressing member 19 that cooperates with the heating mechanism 18, and in the energization section, the electrode unit 14 and the heat-melting ink roll 13 are connected to each other. With the heat generating sheet 10 in between, the resistance layer 4 of the heat generating sheet 10 is brought into contact with the electrode unit 14, and the heat melting ink roll 13 is brought into contact with the conductive layer 3 of the heat generating sheet 10.
The locally melted ink 16 is transferred to the conductive layer 3 by bringing the heating roll 15 into rotational contact with the heat-melting ink roll 13, and the surface of the ink is smoothed by bringing the heating roll 15 into rotational contact with the heat-melting ink roll 13. and a pressing member 19 to press the heat generating sheet 10 and the recording paper 17 to melt the ink 16 on the conductive layer 3 of the heat generating sheet 10 again and transfer it to the recording paper 17. Device.