JPS59120495A - Electric current sensitized transfer recording material - Google Patents

Abstract

PURPOSE:An electric current sensitized transfer recording material excellent in dot quality, mechanical strength, durability and heat resistance and easy to handle, which is comprised of a base layer consisting mainly of an aromatic polyamide and carbon black and an ink layer. CONSTITUTION:The objective electric current sensitized transfer recording material 1, 1' is obtained by providing a two-layer construction consisting of, in the order of from a recording electrode side, a base layer 11 comprising 70- 97% of an aromatic polyamide [e.g., poly(m-phenyleneisophthalamide)] and 3- 30% of carbon black and an ink layer 13 (e.g., a layer comprising low molecular weight polystyrene, a wax, a coloring component or the like) or a three-layer construction of the base layer 11, the ink layer 13 and an intermediate layer 12 (e.g., a layer comprising a thermoplastic resin such as a copolymer of vinyl chloride and vinyl acetate, a flexibility-imparting agent such as a phthalic acid ester, a silicone resin base intermediate releasable layer 12' or the like) which is provided, as required, between the base layer 11 and the ink layer 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording material for electrical transfer, and more specifically to a 9-noise typewriter, 1, an electronic computer, and a computer.
The present invention relates to a recording material for electrical transfer, which is useful for printing records such as outputs or copies of electronic transmission records.

As electronic computers and facsimile machines have gradually become more sophisticated, printers, which are floor equipment, have also come to occupy an important position. These terminal devices can be broadly classified into impact printers (mechanical printers) and non-innocuous printers, and the recording methods of the latter include (1) 1@, child photo, and (2)
) thermal recording, (3) discharge recording, (4) thermal transfer, (5)
Electric transfer is known. However, the former impact printer has a defect in that it cannot avoid the noise generated due to its mechanism.

On the other hand, the recording method for the latter (non-impact printer) is also advantageous in that line segments do not occur, but has various I''cfJ M f.

That is, in the electrophotographic method, the process is complicated because it simulates the five steps of resisting, exposing, developing, transferring, and cleaning.
Reliability of consistently obtaining high quality transferred images 1. The disadvantage is that the device is smaller.

In the heat-sensitive recording method, there are still problems with the storage stability of the heat-sensitive recording material used therein, and the heat-sensitive recording material itself has the disadvantage that it is processed paper and plain paper cannot be used. The discharge recording method is advantageous in that discharge transfer to plain paper is possible, but it has the disadvantage that odor and burnt residue are produced due to discharge breakdown. Since the thermal transfer method uses a thermal head, it is difficult to produce high-density images.
There are drawbacks such as (the limit is about m5ec/dot).

Even with the same non-impact printer method, the above is also Q]
In contrast, the electric transfer method (Gal '4. Transfer recording method) prints 141 commercial secret fK images on plain paper, and the recording speed is J.
Shun also has the advantage that the equipment used in the method can also be made into a compact. For this reason, in the history of the current transfer material (recording material f4 for current transfer) used in this method, several sub-systems have been made to further improve the method.

To give an example, (1) Japanese Patent Application Laid-Open No. 54-872349
1□”C6i, *□0□cc %,.□1.1□8.1
An electrical transfer material has been proposed that is provided with a transfer layer mainly composed of a thermoplastic polymer resin that is soluble in a solvent that does not damage the substrate and has a softening point lower than that of the substrate. Here, as a preferred substrate (i.e. base layer) I
+ A polycarbonate resin containing particles of electrically conductive carbon black is exemplified. However, although the current transfer material disclosed herein has good cold resistance in the transfer layer (i.e., ink layer), it has drawbacks such as poor mechanical strength and thermal resistance of the base layer. can receive a child.

(11) Japanese Patent Publication No. 55-12394, Japanese Patent Publication No. 53-72
No. 46, JP 56-8276@, JP 55-123
In publications such as No. 93, 4i7. A two-layer conductive transfer paper with a conductive ink layer is described, but the anisotropic conductive paste layer here is made using special and highly complex materials such as metal powder and manufacturing methods. Because of this, the cost is 6. Further, since it is difficult to uniformly disperse the gold k]j powder, there is a drawback that the dot shape is distorted and the plowing force is reduced due to a non-uniform paste.

In addition, the heat resistance and strength of the layer in contact with the electrode needles of many conventional recording materials for electrical transfer were not sufficient, resulting in insufficient dot density and damage due to heat under conditions (high applied voltage - current). The stylus of the receiver got dirty easily. On the other hand, when high heat resistance is used, the DI' conductivity is insufficient and the sheet is easily torn, making it difficult to scan the electrode needles smoothly. Furthermore, in the multi-layer structure of 1-Kiroku I, the -B1~ of the base layer is transferred along with the transferred ink, resulting in uneven dot density and dot shape, resulting in poor dot quality compared to the single-layer type. There were some disadvantages as well.

In addition, as mentioned above, in conventional electrical transfer recording materials, the layer in contact with the electrode needles did not have sufficient strength, so great care must be taken when handling them during manufacturing, cartridge setting, transportation, etc. The reality was that it was necessary.

The object of the present invention is to provide a recording material for energization I that can obtain sufficient dot density and has excellent dot quality, mechanical strength, durability, and heat resistance. [0] Another object of the present invention is to provide a recording material for electrical transfer that is easy to remove.

That is, in this case, the recording medium and the recording material for transfer are placed one on top of the other, and the recording material (the return path is in contact with the pole and recorded on the surface of the bone). Contact with the recording medium and apply pressure to record, apply +frt 'iff to the recording material, and transfer the ink onto the Mi1 record F + I2 recording medium. Mouth to be treated: l
It's the same record, 4 feeding power, 3 servings, and 1 serving.

It has a two-layer structure consisting of a base and an ink layer, or a three-layer structure consisting of a base layer, a middle layer and an ink layer, and the base layer is made of aromatic polyamide and carhop rack. It is characterized by having as its main component.

Hereinafter, the present invention will be further explained in detail with reference to the drawings. ;1-S1 figure shows the base layer (Bal
A cut-away diagram of the recording material 1 of the present invention consisting of 13 and 21 ink Bfj (I) 13 and 21 ink Bfj (I), FIG. 2 is a pace) W (
B) It is a cross-sectional view of the recording material 1' of the present invention, which has a three-layer structure of 11, an intermediate layer 012, and an ink layer (I) 13. Here, the intermediate layer 12 must be provided with a diameter of 9A.

The main functions required of each layer are (a) a type that generates Joule heat in the base layer 11 and (b) a type that generates Joule heat in the ink layer 13. However, what is common to both types θ] is that the base layer 1 on the L pole needle side is
1 is that the ink layer 13 has high heat resistance because it is necessary to prevent heat damage and stylus staining, and that the ink layer 13 has a low softening point. In the recording material of the type (b) above, in which the intermediate layer 12 is provided, the intermediate layer 12 is less likely to generate heat than the fourth layer 11 and the ink layer 13, so in this case The intermediate TA 12 is formed with at least a flexible film layer. Providing an intermediate F@12 is beneficial in many ways.
, and this will probably be buried in P3 by Sao) H9 and Akira.

In order to fully discover the above functions, it is necessary to set the air resistance (R) of each layer in the recording material shown in Figure 1 to be 1>RB for the type (a). can be,
For the type (b) mentioned above, it is necessary to set Rx. On the other hand, in the recording material shown in FIG. 2, the electrical resistance (+1) of each layer needs to be set to R1>RB or (t R1>RM>RB for the type (a) mentioned above. For type (0), it is necessary to set Rx such that RJ3>RI or RB>1m).

Due to this relationship, especially in the recording material shown in FIG. 2, the intermediate layer 12 is used to separate the base layer 11 and the ink layer 13, or
The intermediate layer 12i is trapped, reducing the amount generated in the Pace M11 by 6 cars, solving problems such as damage to the base layer 11 due to heat and dirt on the stylus, and reducing contact resistance with the stylus. As a result, there are fewer missing dots, and the dots remain sharp in the ink layer 13. .

In addition, if the base layer 11 and a release agent are used in the intermediate layer, a more desirable recording material can be obtained. That is, as shown in FIG. 3, when the heat generated by the current from the stylus 6 is concentrated directly below the stylus 6, only the portion of the intermediate peeling layer 12' where the heat is concentrated is exposed to the base 1 and the base 11. The ink is transferred to the recording medium 2 together with the ink layer 13. This allows for dot quality, sharp and uniform bales.

The following 45 materials are used to form each layer.

It goes without saying that the base layer 11 has heat resistance or water rupture, but as mentioned earlier, it improves the tear strength IK and heat resistance when the recording material (ink sheet, ink ribbon) has a dirt + 4 strength. In order to make it easier to handle the sheets or ink cartridges during production, cartridge setting, transportation, etc., and to minimize damage caused by passage of the surface of the pace pigeon, the present invention is particularly designed to Aromatic polyamide as a binder, Lord, -,, -ゎ18
o1.1 Ah, car off, 9th, 8th The sheet-like material that was made for 1 minute has been used once again. Here, the ratio of aromatic polyamide and carbon black is 7 [)]
~97 units, and the latter 3~30 units are appropriate.

Aromatic or mibolyamide ρ is, for example, disclosed in Japanese Patent Application Laid-open No. 1983-
Although it is described in '35797, it can be used. ! [''The aromatic polyamide used in 1v in the uninvention is the general formula % formula % (However, Ar1. Ar2 and Ar3 are both 21
Aromatic groups of songs, which may be the same or different. ) is a compound represented by Specifically, poly(m-phenylene isophthalamide), poly(m-phenylene terephthalamide), poly(p-phenylene isophthalamide), poly(p-) □enylene terephthalamide), s? I) (4,4'-oxydiphenylene terephthalamide), poly(4,4'-oxydiphenylene isophthalamide), poly(m-benzamide)
Examples include p-benzamide and p-benzamide.

Among them, poly(In-phenylene isophthalamide),
7') (rn-Phenylene terephthalamide) is prepared in a film form using a wet method (ft1f, rolling method).
．． It is useful in that it can produce a heat ray that causes the bath to irradiate, and in this regard, dimethylporamide, dimethylacetolimide, N-methyl-2-pyrrolidone, etc. are suitable for the heat radiation 5 in the front layer.

In any case, the above aromatic polyamides may be used alone or in combination of two or more. In addition, the resin 2 inder component (aromatic ijξ” ryamide) forming Torera Pace 11 was softened at 180°C.
The intermediate layer preferably has the following content: 2 or intermediate release layer 1
A resin having a softening point of 150°C or higher is suitable for 2'. The softening point has a low forming ability, and the sheet does not have sufficient strength, so it may become soft due to the heat generated during reporting, or giH (< Shita (9)
In the second film, Zukokichi is able to fulfill his role as a hero.

Here, a/d fat d5 that can be used in the intermediate layer 12 includes, for example, chloride-diru-vinyl acetate copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-acrylonitrile copolymer, acrylic acid ester-acrylonitrile copolymer , acrylic is ester-vinylidene chloride copolymer, acrylic ester-styrene copolymer, methacryl l'l;f
fi Ester-acrylonyl l-Ul copolymer, methacrylic acid ester-vinylidene chloride copolymer, methacrylic acid ester-styrene copolymer, urethane elastomer, nylon silicone dJ fat, nitrocellulose
Polyamide resin, polyvinyl fluoride, vinyl chloride; redene-acrylonitrile copolymer, butadiene-acrylonitrile copolymer, polyamide resin, polyvinyl butyral,
Cellulose derivatives (cellulose acetate butyrate,
Cellulose diacetate, cellulose triacetate, cellulose propioate, nitrocell [coast mark]
), 7I? Recarbonate, styrene-butadiene co-i
'lj polymer, polyester P, #l lI&, chlorovinyl ether-acrylic acid ester copolymer, amine (
U1 fat, each Ijl synthetic rubber thermoplastic +t1; r, +
Oil and mixtures thereof, etc. Other K(ζ′[1 sec 2
Added plasticity l for cellulose VC, boiler γi
Polyester (W'r)
hmm? (branch type), polyvinyl alcohol, nylon, styrene-butadiene copolymer (low styrene type), styrene-acrylic copolymer, styrene with plasticizer added, vinyl chloride-r″l'9tG vinyl copolymer ,
Polyvinyl butyral and those added with a flexibility imparting agent are preferred.

Phthal ester is used as a regression agent.

Rin! These include esters, fatty esters, glycols, and fats and oils.

Further, for the intermediate release layer 12', a resin with a release effect is selected for the purpose of aiding ink transfer, and examples include silicone, methyl methacrylate, polyethylene, polypropylene, fluorine-containing polymer, and polyvinyl alcohol. , polyester (vs. cellulose)
Cellulose resin (vs. polyester), F'ij silicon silicide, charcoal, red sea bream, sium, etc., and oxidation!
1371 Binder systems that contain carbonates, chlorinated rubber, etc., commercially available peeling products (1)
Myristint), chromic chloride, etc. can be used.

Mil JR 412 (Junior 1 (11 Ei 11!;
tlf]11i ] 2'), it is preferable to conduct the source heat there more efficiently and to keep it relatively high in resistance (1 (1' to 106Ω)), and to A relatively low grinding force (10°~
It is preferable to set it to 103Ω).

On the other hand, the ink layer 13 is formed by forming the ink layer 13 (as 1°d ink,
There is no softening point and the flag fish is 50-200'C.
0 to 120°C, and the first is low-molecular polystyrene, styrene-butyl methacrylate copolymer, and low-molecular polyamide, and the second is waxes such as carnano wax, linseed oil, etc. It is best to use oils, fats, and various modified rosins. Ink IN 13 uniη? 11 to the shape (diameter and round shape) of the electrode needle, and at the same time, the resin used therein should have a softening value within the above-mentioned range. It is necessary to have a moderate to high melting point. Melting point is 50
If it is lower than 200°C, it will cause scumming during conveyance or due to pressure JF, and if it is higher than 200°C, it will melt with low energy and will not form a suitable thermal transfer ink.

Furthermore, a coloring component is added and dispersed in the ink layer 13;
This coloring ingredient (envy color face, [, coloring dye) is the J&
It constitutes a heat transfer ink together with a part of the resin (painter) present in the surrounding area.These coloring components include carbon blanks (particularly fiber-type power, jimp hooks, acetylene silk, lamp blanks, etc.)
In addition, examples of organic or inorganic dyes/pigments for coloring include phthalocyanine, alkali sol, slit black, hengedine yellow, fast red, crisscross iolet, iron chloride, and cadmium sulfide.

Creating the recording material of the present invention (Pace!r
4] i and ink continuation 13 or base layer 1],
In order to match the electric folds of the intermediate layer 12 (including the intermediate peeled layer 12') and the ink j & 13 to the above-mentioned I9', each (organic or non-organic)
) n:4 ingredients are added to each of the above layers in an appropriate amount of:11.

#n 11:i Aiwa uses thick and heavy carbon blanks (which are also ideal as coloring ingredients), and Tsuei's carbon black, graphite, and oil blanks are representative examples. It can be opened.

In order to actually produce the recording material of the present invention, it is sufficient to disperse or dissolve the materials necessary for each layer in an appropriate solvent and then apply and dry them on a glass plate, metal plate, etc., in order to maintain the film thickness. The ink layer 13 has a thickness of 1 to 1 μm, preferably 2 to 4 μm, and the intermediate layer 2 has a thickness of 5 to 211 pm, preferably 5-1 [1 pm].
, base) VJ11, 5 to 10 μnl, preferably 3 to 5 μm, and then peeled from a glass plate, metal plate, etc. Medium LHI peeling with peeling C property 1
When providing tnowo'J12', the film thickness is equal to that of ink layer 1.
3 is the same as above, intermediate peeling rule S12' is 05
~5μtn Preferably 1~3μm 1 layer 11 is 5~5μtn
2() μm, preferably 5 to IQpm.

MJ Ml: As a solvent, in addition to the previously mentioned dimethylpolamide, dimethylacetamide, N-nonal-2-pyrrolidone, σ, tetrahydrofurano, 1,
2-dichloroethane/, methyl ethyl ketone, toluene,
Examples include petroleum ether, ethyl acetate, dimethylpolamide, and methanol.

In order to carry out electrical transfer recording using the recording material for transfer, for example, the third
Similar to the conventional method shown in the figure, the ink layer 13 is WjFj with the recording body 2, and the intermediate layer 12 (or intermediate peeling 1 to 12
′), the return electrode 4 is brought into contact with the base layer 11 via the
Further, it is sufficient to apply current to this base layer 11 from the recording applied voltage 5 (no. B)
in the case of〕.

When ``f+'i'' is applied to ``h'' self-record discrimination 1'', ■the degree of attrition and dispersion directly under ``self-recorded plan 1'' is maximum, and the return journey is 15v 4
is 8 [θ which has a larger contact area than the recording needle 3
), as it approaches the return path ``U'', the current expands and the density of the curvature decreases.The Joule heat generated from this current flow softens or melts the ink and transfers it to the recording medium 2.Here, On the recording medium 2, a 'tod flow (+uj 1δ corresponding to the g number ζ) is formed.

Takuden, U) Eiken, it; is approximately 1゛: There is a large color tube in the formation, but generally it is 1() ~ 200■.
1° hour 0.05~1? ? 1sec, scan H&'y
3 to 2 n pieces/hour IW. The recording material 1' and the recording body 2 are arranged in layers in accordance with optical alignment. The recording material of the present invention does not transfer all of the coloring components onto the recording medium 2 even when a strong current is passed through it, so it is difficult to use it repeatedly.
] It is Noh.

The above-described current transfer recording method uses a recording material 1' shown in FIG.
Although the explanation is based on the recording material 1 shown in FIG.
The same applies to

As described above, by using the recording material of the present invention, a high quality image can be quickly formed on a recording medium such as plain paper with low recording energy. This is because the recording material has a two-layer structure of a base layer and an ink layer, or a three-layer structure of a base layer, an intermediate layer, and an ink layer, and the functions of each layer are separated. It became clear that by making the prints a certain type (with a 1-middle separation), excellent art collections could be obtained.

Historically, the base layer in the recording material of the present invention has a completely different composition from the conventional special and expensive anisotropic one-layer base layer, and has been rapidly developed into a homogeneous base layer containing seven materials. Since a dispersion layer is sufficient, it is more uniform than a special anisotropic base layer, and has the effect of allowing high-quality dot recording that is faithful to the shape of the recording needle.

In addition, in the recording material of the present invention, by increasing the mechanical strength (particularly tear strength) and heat resistance of the base layer, even better and sharper dot recording can be achieved with higher reliability.

Next, examples and comparative examples will be shown. Please note that all the sections are offshore sections.

Example 1 m-phenylene terephthalamide 9
A mixture consisting of 1 part J quantified calcium 5 parts 85 parts N-methyl-2-pyrrolidone was dispersed in a ball mill for 120 hours, and the mixture was dispersed on a glass plate with a cap of 200 After applying by casting using a PM blade and drying for 1118 minutes in a dryer at 110°C, it was immersed in cold water at about 5°C for 1 minute and peeled off from the glass plate.
1 [shita. Next, after rinsing in water at about 20°C, in a wet state, it was stretched twice in each direction, lengthwise and horizontally, and then heat-treated at 300°C for 10 minutes to a thickness of about 2011 m1 and 60 ton air resistance. A base layer sheet of Ω was obtained. Next, on top of this, a mixture consisting of 85 parts of oligostyrene (softening point 65°C), 15 parts of carbon plastic (Kenchen Prink 2, manufactured by Japan Easy Co., Ltd.) and 900 parts of cyclohexane was heated in a ball mill for 24 hours. It was applied using a blade with a gap of 100 pm and dried for 1 minute at io o °C with a dryer to a thickness of about 5 μm.
An ink layer was formed.

The blood resistance of the entire ink sheet (recording material for electrical transfer) made in this way is 5.5Ω, and the mechanical strength of this material is a tensile strength of 1200 f/20.
pm, tear strength [150? At 720 μm, it was confirmed that the rain was raining with sufficient intensity.

Recording was carried out on this ink sheet using a multi-stylus with a diameter of approximately 6077771 mm and arranged in two rows in a staggered manner with a recording voltage of 8F/III+, under the conditions of applying a pressure of 150V1 for 0.1 msec. When I did this,
Clear, high-density characters with a dot density of 1.4 were printed on plain paper (recording material) at a height of 16 dots per image.

Additionally, this ink sheet can be used to record 10,000 characters.
i: Even after repeated testing, no marks were observed on the surface of the multi-stylus. This is the heat deformation temperature of the base layer in this ink sheet, or 250 to 30 (
It is thought that the temperature was as high as 1'C, and as a result, no heat buildup of the base layer occurred.

Example m - Example 1 except that a mixture consisting of 9 parts of phenylene isophthalamide, 9 parts of carbon black (Ketjen Black, manufactured by Japan Easy Co., Ltd.), 1 part of calcium chloride, 2 parts, and 88 parts of dimethylacetamide was used as the material for the paste layer sheet. An ink sheet was created in exactly the same manner.

Here, the base layer sheet has a JkJ of about 15 μm.
11 The resistance is 100Ω, and the ink layer has a thickness of about 3μ.
m, and the resistance of the entire ink sheet was set to IOKΩ.

Next, this ink sheet was slit to a width of 6.35 rtrm, stored in a cartridge, and then recorded under the same conditions as in Example 1.The ink sheet was then printed on plain paper at a high resolution of 16 dots/rail at a dot density of 1. 2, clear and dense characters were obtained.

Moreover, this character quality remained the same even when 10,000 characters were recorded repeatedly. This is thought to be due to the high heat deformation temperature at the bottom, as described in the first example. In addition, this slit ink ribbon (J') '+:';'
x 5 parts m.

Palm Example 1 Triacetate cellulose 93
A mixture of 1,400 parts of 7-part carbon blank (Ketjen Black, Japan Easy TL!J!) and 7-part cyclized methylene was dispersed in a ball mill for 24 hours, spread on a 300 μm polyester film plate, and dried in a dryer. A base J?4 with a resistance of 100 Ω and jν of about 15 μm was formed on the base layer in the same manner as in Example 1. After forming an ink layer (irradiation, thickness of about 3 μm), the base layer and the ink layer were separated together with a polyester film glass 11 to obtain an ink sheet. The entire sheet was 0)'[j, and the air resistance was set to 5Ω.

) 2, then use this ink sheet to print /AHj'
t1. When recording under the same conditions as 1, dots/A
With s IP, l 1, 2, sharp characters were printed on the paper H4f. In addition, since the heat deformation temperature of the base layer of this ink sheet is about 180 parts, some multi-stylus stains were observed, and the character quality was maintained until 10,000 characters were repeatedly recorded. .

However, the mechanical strength of this θ) ink sheet is tensile strength 500y/15μm1 tear strength 2n
The r/i is weak at 5 μm, and it is confirmed that the ink ribbon often breaks when slit to a width of 6.35 and prints the ribbon, and the ink ribbon often breaks during recording inside the cartridge. It was done.

Comparative Example 2 Polycarbonate 9
Example 1 was repeated, except that the material for the paste layer sheet was prepared by dispersing a mixture consisting of 1 part carbon blank (Kenchen Pink, manufactured by Nippon Easy Co., Ltd.) and 100 parts of 1,2-dichloroethane for 24 hours in a ball mill. I created 7 comparison sheets in exactly the same way. world,
Base here! Thickness is approximately 15μm, nausea resistance 50
The ink layer had a thickness of about 3 μm, and the ink sheet was rubbed so that the entire ink sheet had a resistance of 14i and an air resistance of 4Ω.

Next, this ink sheet track width 6. When the paper was slit to 35 mm, stored in a cartridge, and then recorded under the same conditions as in Example 1, soft and sharp characters of 1.1 to 1.2 in the dot-gummy group were initially obtained on plain paper. It is observed that when 100 to 1000 characters are recorded repeatedly, the dot density decreases to 0.5 to 1.0.

When the surface of the multi-stylus was observed after repeated recordings, it was found that there were some cracks caused by the heat in the base layer. This is considered to be due to the low heat distortion temperature II of the base layer, which is about 120°C.

Example 3 Same base layer as Example 2 (Rude, approximately 15 1 parts m
.

turtle. Apply a layer of silicone morning oil (95 parts, 13 parts, 5 parts of xylene, 900 parts of silicone resin) onto the air resistance (1 fl O KΩ) using a blade with a gap of 50 μn1.
It was dried at 80° C. for 1 minute to form an approximately 2 μm JulQ) intermediate layer. Furthermore, low molecular weight styrene is added on this intermediate layer.
80 parts Ketjenblack 20 parts cyclohexane 900 parts 711) Key 1! Apply with a Tsubu 1110 prn blade and dry at 70°C for 1 minute to a thickness of approximately 3 μm.
A thick (1) ink layer was formed and an ink sheet was prepared. By the way, this ink sheet as a whole is the best! It was Ω in i9.

Next, a signal 'Ichikawa 10 (IV, 1ijO0 when applied) was applied to this ink sheet using the same device used in Example 1.
When recording was carried out under the condition of L m5ec , sharp characters with a dot density of 1.5 were recorded on the Sotra fiber (recording body). Furthermore, even after repeated recording of 10,000 characters using a dwarf ink sheet, the same print quality remains.
j・It was done.

Although this ink sheet lifting platform did not confirm 9'IL in the test, it is assumed that the 11th and 10th grade of junior high school class is responsible for the 0 heat generation due to energization (see Figure 4). 7111 Example 1 and Example 2.
It is thought that the number of characters recorded repeatedly has become possible.

4. Figures 1 and 2 are cross-sectional views from two sides of the recording material according to the present invention, and Figures 3 and 4 are diagrams showing the outline of the recording material according to the present invention. be.

Claims (1)

[Claims] 1. Align the recording medium and the recording material for electrical transfer,
Used in an electrical transfer recording method in which a return electrode is brought into contact with the recording material, and a recording electrode needle is applied to the surface of the recording material to apply a voltage to energize the recording material and transfer ink onto the recording medium. The above-mentioned recording material has a two-layer structure consisting of a base layer and an ink layer from the recording electrode side, or a three-layer structure consisting of a base layer, an intermediate layer and an ink layer, and the base layer is made of aromatic polyamide and carbon. A recording material for electrical transfer that is characterized by containing black as its main component.