JPS59227492A - Electrifying transfer recording medium - Google Patents

Abstract

PURPOSE:To achieve a printing on a plain paper while enabling a high-speed printing and a color printing with a high resolution by laminating a conductor layer, a semiconductor layer and an electrifying layer on one main surface of an electrically insulating heat conductor layer sequentially while a hot melting ink layer is laminated on the other main surface thereof. CONSTITUTION:An electrifying transfer recording medium is piled on a body 206 to be transferred, an electrode stylus 207 is pressed on an electrifying layer 204 and then, a voltage is applied between the electrode stylus and a conductor layer 202 from a power source 208. Consequently, current flows through the electrifying layer to heat a part of a semiconductor layer 203. The resulting heat melts a hot melting ink layer 211 right below a heat conductor layer 201 therethrough to be attached to a body 206 to be printed. Thereafter, when the electrifying transfer recording medium is separated from the body being printed, a part 212 of the hot melting ink is left to enable a printing. In this case, the attaching of debris of the semiconductor layer to the body to be printed due to electrification is prevented by the heat conductor layer 201 thereby producing a clear dot shape and color.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrically conductive transfer recording material for printing figures or images converted into electrical signals onto a printing substrate.

Structure and Problems of Conventional Examples Many methods have been considered in the past for printing figures or images converted into electrical signals onto a printing substrate.

For example, there is a method of converting an electrical signal into an optical signal and then printing a figure or image on paper using a so-called xerographic procedure.

There is also a method called wire dot, in which the ink ribbon is struck with a thin wire and struck onto the paper. There is also a method called inkjet, in which figures or images are printed by ejecting droplets from a nozzle. Another method is to print on thermal paper using a thermal head.

There is also a method in which a current is passed from an electrode pin onto discharge rupture paper to break the metal film and print figures or images.

However, each of these methods has drawbacks.

For example, in the xerography method, the image formation method is complicated, and the device is large and needs to be well maintained (fist wire dot). The quality of graphics and graphics is not very good, and the printing speed is slow. Furthermore, since the inkjet method uses a thin nozzle, there are problems such as clogging of the nozzle hole, and the speed is also slow. Those that use thermal paper or discharge-destroyed paper have a problem in that the printed matter is special paper rather than plain paper, and those that use thermal paper have the disadvantage of slow speed. A method called thermal transfer was devised for printing on plain paper. In this method, a sheet coated with heat-melting ink is layered on top of plain paper, and a thermal head prints on top of it.
There are problems with resolution and speed.

FIG. 1(a) shows a cross-sectional view of a known conventional electrical transfer recording material. Usually, the conductor layer 101 is a vapor deposited layer of aluminum or the like and is made to have a low electrical resistance. The semiconductor layer 102 is a resistor made of resin containing carbon powder. The current-carrying layer 103 is made of resin containing copper powder,
Electric conductivity in the thickness direction is increased.

In the printing method, a needle electrode is brought into contact with the current-carrying layer 103 from above, and a voltage is applied between the needle electrode and the conductive layer 101. At this time, if there is a printing material on the side of the conductor layer 101, the conductor layer 1o1 and the semiconductor layer 102 are heated and destroyed by the energization, and a part of them adheres to the material to be printed. This phenomenon occurs in a short period of time (1) It is possible to print at a relatively high speed.

That is, a printing speed of 100 μs/dot is possible, which is 10 times faster than printing using a thermal head such as thermal recording or thermal transfer. FIG. 1(b) shows another conventional electrical transfer recording material, which has almost the same structure as FIG. 1(a), or has another color ink layer 104 under the conductor layer 101. is the provision. By doing so, colors can also be printed.

Such electrical transfer recording materials are attracting attention because they enable high-speed printing. However, when the conductor layer 102 breaks down, the droplets adhere around the dots, making the dots unclear, and in the case of color, the color becomes muddy. Furthermore, each layer was only mechanically weak due to its structure, making it difficult to use.

OBJECT OF THE INVENTION The object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to provide an electrical transfer recording material that can be printed on plain paper, has high resolution, can be printed at high speed, and can also print in color. The goal is to provide the following.

Structure of the Invention The current transfer recording material of the present invention has a conductor layer, a semiconductor layer, and a current conductive layer laminated in this order on the entire surface of an electrically insulating heat conductor layer, and further includes a conductor layer, a semiconductor layer, and a current conductor layer. It has a structure in which a layer of heat-melting ink is laminated on the surface, which enables high-speed, high-resolution, and cloud-free color printing.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an enlarged sectional view of one embodiment of the current transfer recording material of the present invention. In the same figure, 201 is an electrically insulating heat conductor layer, which is preferably a thin plastic sheet with a thickness of about 6 to 5 Qμ. For example, polyester terephthalate, polyvinyl chloride, etc. can be used.

202 is a conductor layer υ, 600-100C of Al1 etc.
People's metal vapor deposition film is good. 203 is a semiconductor layer, which is made of a resin containing a conductivity imparting agent and having a thickness of about 1 to 5 μm. As the conductivity imparting agent, metal powder and carbon are preferable.

A conductive layer 204 is made of resin containing a conductivity imparting agent and having a thickness of approximately 1 to 50 μm, similar to the semiconductor layer 203 .

However, in this case, the resistance values in the thickness direction of the conductive layer 204 and the semiconductive layer 203 are adjusted so that the semiconductive layer 203 has a larger resistance value. Further, the resistance in the plane direction of the current conductor layer 204 and the semiconductor layer 203 is adjusted to be smaller than the resistance in the plane direction of the conductor layer 202. The relationship between these resistance values is, for example, similar to the relationship in the electrical transfer recording material described in detail in the Journal of the Image Communication Society, Vol. 11, No. 1, pages 3 to 9, 1982. The above-mentioned document also describes the structure of the current-carrying layer semiconductor layer. 206 is a heat-melting ink, which is made of a low-melting resin (for example, wax, uncured epoxy, etc.) containing a color or black pigment or dye.

A method of printing using the electrically conductive transfer recording material shown in FIG. 2 according to the embodiment of the present invention will be described with reference to FIG. 3. As shown in FIG. 3, a current-carrying transfer recording material is placed on a transfer target 206 (usually paper), and the electrode needles 207'i are pushed onto the current-carrying layer 204, and the electrode needles and the conductive layer 202 are As a result, a current flows through the current-carrying layer as shown at 209 in the figure, heating a part (210) of the semiconductor layer 203. Due to this heat, the heat-melting ink layer 211 directly below the heat conductor layer 201'i is melted, and the printing material 20
Attach to 6.

Thereafter, when the electrical transfer recording material is separated from the printing medium as shown in the figure, a portion 212 of the heat-melting ink remains and printing is not possible. In this case, the thermal conductor layer 201 prevents the destruction of the semiconductor layer from adhering to the printing material due to energization.
Clear dot shapes and colors can be obtained.

Effects of the Invention As is clear from the above description, the present invention includes laminating a conductor layer, a semiconductor layer 2, and a conductive layer in this order on an electrically insulating heat conductor layer, and further laminating a conductive layer under the heat conductor layer. It has a structure in which heat-melting ink layers are laminated, and unlike conventional electrical transfer recording materials, droplets from the broken semiconductor layer do not attach to the printing material because of the heat conductor layer. You can obtain the vivid colors and density of meltable ink itself. Furthermore, if a plastic sheet is used as the heat conductor layer, a mechanically strong current transfer recording material can be obtained. Furthermore, since the heating mechanism remains the same as in the past, the printing speed remains the same and high-speed printing is possible as in the past.

[Brief explanation of drawings]

FIGS. 1(a) and (bl are sectional views of a conventional current transfer recording material, respectively, FIG. 2 is a sectional view of a current transfer recording material according to an embodiment of the present invention, and FIG. 3 is a sectional view of a current transfer recording material using the same recording material. It is a diagram showing a recording method. 101, 202... Current carrying layer, 102, 203...
...Semiconductor layer, 103, 204... Current conducting layer, 201... Electrically insulating thermal conductor layer, 1
04゜205...Thermofusible ink layer, 2o6・
...Printed material, 207... Electrode needle, 20
8...Power supply. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure (0-) (Sparrow) Figure 2 2// Procedural amendment April 72, 1988 Dear Commissioner of the Japan Patent Office 2 Name of the invention Electric transfer recording material 3 Relationship with the case of the person making the amendment Patent application Address 1006 Bold Kadoma, Kadoma City, Osaka Name (582) Representative of Matsushita Electric Industrial Co., Ltd.
Toshihiko Yamashita 4 Agent 571 Address 1006 Oaza Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Text will be added to the column for the detailed explanation of the invention in Item 1 subject to amendment 5. ``Example: A sheet of polyethylene terephthalate with a thickness of 10μ is used as the heat conductor layer, and a 6e
An aluminum vapor-deposited film was formed. The surface resistance of this aluminum vapor-deposited film was 7 to 10 Ω/sq. The following composition for the semiconductor layer: 100 parts by weight of butyral resin (degree of polymerization: 17
00, butyralization degree 65%) 200 parts by weight of channel plaque and 1600 parts by weight of ethyl alcohol were formed on the conductor layer to a thickness of 10 μm. The surface resistance of this semiconductor layer is 2X
It was 10 Q/sq. Next, as a current-carrying layer, the following composition was used: 100 parts by weight of butyral resin (polymerization degree: 17)
00, butyralization degree 65) Copper powder 120 parts by weight toluene
200 parts by weight ethyl acetate
200 parts by weight was formed on the semiconductor layer to a thickness of 15 microns. The surface resistance at this time is 2 x 10 Q/B
It was q. Next, on the lower side of the thermal conductor layer, the following composition: vinyl chloride vinyl acetate copolymer 100 parts by weight carnauba wax
70 parts by weight Castor wax 110 parts by weight Carbon black 40 parts by weight Ethyl acetate 510 parts by weight Toluene
170 parts by weight of the heat-melting ink layer was formed to a thickness of 5 microns to obtain a five-layer laminate with a total thickness of 45 microns of an electrically conductive transfer recording material.

Claims (1)

[Claims] A conductive layer on the entire surface of an electrically insulating thermal conductive layer. An electrically conductive transfer recording material in which a semiconductor layer and two conductive layers are sequentially laminated, and a heat-melting ink layer is further laminated on the other main surface of the thermally conductive layer.