JPS61230966A - Current supply transfer recording method - Google Patents

Abstract

PURPOSE:To enable high speed recording and to make it possible to lower the running cost of a transfer body, by reducing the frictional resistance between the transfer body and an image receiving body and making the running speed of the transfer body lower than that of the image receiving body. CONSTITUTION:A transfer body 1 is constituted by providing a transfer layer 3 containing a coloring material and a lubricating material to a substrate 2 having conductivity. In order to increase the relative speed of an image receiving body 4 and the transfer body 1, the solid lubricating material 3a protruded from the surface of the transfer layer 3 is contained in the transfer layer 3. In order to impart lubricity, a surfactant and a liquid lubricating material are used other than said solid lubricating material 3a. Because the running speed of the transfer body 1 can be made slower than that of the image receiving body 4, the running cost of the transfer body 1 can be lowered to a large extent.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electrical transfer recording method that proposes the economical use of a transfer member in which the traveling speed of the transfer member is lower than that of an image receptor.

Conventional technology A transfer body with a transfer layer formed on one side of a substrate is pressed against an image receptor, the transfer body is energized according to an image signal to generate heat, and a part of the transfer layer is transferred to the image receptor to form characters. An electric transfer recording method for forming one image per figure has been proposed. The transfer layer used in this method uses heat-melting ink, and
The traveling speeds of the transfer body and the image receptor were the same (Japanese Patent Application Laid-open No. 59
-45194)〇On the other hand, in thermal transfer recording, a method has been proposed in which recording is performed by using heat-melting ink at different running speeds of a transfer body and a receiver (Japanese Patent Laid-Open No. 59-129
196).

Problems to be Solved by the Invention Compared with normal thermal transfer recording methods, the current transfer recording method as described above requires less recording energy and can perform high-speed recording because a signal current flows inside the transfer body having a transfer layer. It has characteristics. However, because the configuration of the transfer body, which is a consumable item that is consumed in large quantities for high-speed recording, is complicated,
There was a problem with the high cost.

The present invention is intended to solve the problems of current transfer and thermal transfer, and aims to provide a recording method that requires less recording energy, can perform high-speed recording, and reduces the running cost of the transfer member. shall be.

Means for Solving the Problems In the current transfer recording method of the present invention, a transfer body, on which a transfer layer is formed on one surface of a transfer substrate, and an image receptor are brought into pressure contact, and the transfer body is energized in accordance with an image signal to generate heat. In a method for transferring a part of a transfer member to an image receptor.

It is characterized in that the traveling speed of the transfer body is lower than the traveling speed of the image receptor.

The current from the energizing head in response to the working image signal flows near the transfer layer of the transfer body, thereby efficiently generating heat and transferring the transfer layer to the image receptor.

At this time, if the transfer layer contains a sublimable dye, the dye transfers to the image receptor due to sublimation or diffusion phenomena, resulting in letters.

form an image. When a heat-melting dye is included, two character images are formed by melt transfer. By reducing the frictional resistance between the transfer body and the image receptor, the traveling speed of the transfer body can be made lower than the traveling speed of the image receptor. By this operation, a large number of image receiving screens can be obtained with a small amount of transfer material.

Embodiment The principle of the recording method of the present invention is shown in FIG. Reference numeral 1 denotes a transfer body, which has a transfer layer 3 containing a coloring material and a lubricant on a conductive substrate 2 having a thickness of 3 to 20 μm. It is preferable that the transfer layer 3 also has appropriate conductivity. 4 is the image receptor,
An image is formed on its surface. The signal current generated from the signal source 6 enters the inside of the transfer body from the current-carrying electrode 6, flows along the dotted line indicated by 8, and returns to the signal source 6 through the return electrode 7. 9 is a platen roller, and 10 is a roller for fixing the return electrode. Recording is performed according to the above-mentioned principle while adjusting the tension so that the traveling speed of the transfer member becomes v/n (n is an integer) with respect to the traveling speed V of the image receptor.

FIG. 2 is an enlarged sectional view of another embodiment of the transfer body and image receptor portion. A conductor 11 made of metal or the like with a thickness of several thousand layers is provided at the center of the transfer body so as to reduce the electrical resistance, and a solid lubricant is provided on the transfer layer 3 protruding from the surface of the transfer layer in order to increase the relative speed between the image receptor and the transfer body. 3a is included. In addition, the image receptor 4 is provided with a dyeing layer 4b on the surface of its base 4a to make it easier to capture the coloring material. It is preferable to include a lubricant in the adhesion layer as well. Also.

It is also necessary to improve the heat resistance and releasability of the transfer layer and dyed layer. FIG. 3 shows the circuit of the current flowing inside the transfer body. 81 to 86 indicate the resistance of each part. When a metal such as aluminum is used for the conductor 11, resistances 82, 83, and 84 are small, and resistances 81 and 86 are the largest. FIG. 4 shows a plan view of an embodiment in which a current is returned to the outside of the transfer body. Since the surface other than the color material pattern 3' is a conductor, the feedback electrode 7
When the current is returned to the outside from 0!, the resistance of 86 in FIG. FIG. 5 shows a current-carrying head 12 in which a current-carrying electrode 5' and a return electrode 7' are integrated. Reference numeral 13 denotes a cylindrical rod made of heat-resistant glass or the like, on the surface of which a large number of electrode pairs can be formed by thin film, thick film photolithography, or the like. 14 is a support body that supports the rod 13. In this case, two locations 81 and 86 generate particular heat. However, a homogeneous image can be obtained by appropriately designing the electrode spacing on the current-carrying head and the conductivity of the transfer body.

Next, the transfer body and the image receptor will be explained in more detail.

In order to form the above-described current circuit on the transfer body, it is necessary that the conductivity in the thickness direction of the transfer body is greater in the interior than in the vicinity where the current-carrying electrode contacts. Transfer substrates include polyimide, aromatic polyamide, polyester, polyesterimide, polyetherimide, polyethersulfone, polyetheretherketone, polysal7one, polycarbonate, polyphenylene oxide, polyphenylene sulfide, polyarylate, Teflon, urethane, and polyquinoxaline. Aromatic polymers, aromatic heterocyclic polymers, polymer chelate compounds, polyschiff bases, fluorinated carbides, etc. that contain conductive particles such as graphite, carbon, aluminum, etc., or impurities in polyacetylene, polychenylene, etc. Polymer synthetic metals with added ions are used.

When a sublimable dye is used, the transfer layer contains various additives in addition to a disperse dye, a basic dye, etc. and a high melting point binder. Also, pigments when heat-melting dyes are used.

Contains dyes, carnauba wax, waxes such as wood wax, beeswax, and various additives. In order to impart conductivity, fine particles of carbon, metal, etc. may be included. In order to impart lubricity, the following surfactants, solid and liquid lubricants are used.

As the surfactant, various conventionally well-known surfactants can be used. For example, carboxylates, sulfonates, sulfate ester salts.

Various anionic surfactants such as phosphate ester salts.

Various aliphatic amine salts, aliphatic quaternary ammonium salts.

Various cationic surfactants such as aromatic quaternary ammonium salts and heterocyclic quaternary ammonium salts, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, etc., polyoxyethylene glycerin fatty acid esters, polyoxyethylene sorbitan Ether ester m+pov ethylene glycol fatty acid ester such as fatty acid ester, fatty acid monoglyceride, sorbitan fatty acid ester, propylene glycol fatty acid ester, 7. Ester type such as m fatty acid ester.

Various nonionic surfactants such as nitrogen-containing types such as fatty acid alkanolamide, polyoxyethylene fatty acid amide, polyoxyethylene alkylamine, and alkylamine oxide, various amphoteric surfactants such as various betaine types, aminocarboxylate types, imidacillin derivatives, etc. Surfactants, fluoroalkyl (C2-C2°) carboxylic acids, monoperfluoroalkyl (06-C16) ethyl phosphates, various 7-fluorocarbon surfactants such as perfluorooctane sulfonic acid jetanolamide, polyether modification silicone oil.

There are various silicone surfactants such as carboxyl-modified silicone oil, alkylar, aralkyl polyether-modified silicone oil, various modified silicone oils, and various copolymers of polyoxyalkylene glycol and silicone.

A solid lubricant is a lubricant that is solid or semi-solid at 25° C. and 1 atmosphere. For example, various alcohols such as stearic alcohol and mannitol.

Fatty acids such as stearic acid and montanic acid, fatty acid esters such as stearyl stearate, cetyl palmitate, and pentaerythritol tetrastearate, waxes such as microcrystalline wax and polyolefin wax, and their partial oxides, fluorides, and chlorides. These include aliphatic hydrocarbons such as valmitic acid amide, fatty acid amide such as ethylene bisstearic acid amide, stearic acid carbide carbon heptafluoride, talc, and the like.

A liquid lubricant is a substance that is liquid at 26° C. and 1 atm and exhibits lubricating properties.

Mono-based oil, alkylbenzene, polybutene.

Alkylnaphthalene, alkyldiphenylethane.

Synthetic oils such as phosphate esters, saturated hydrocarbons, animal and vegetable oils,
mineral oil, ethylene glycol, propylene glycol,
Examples include glycols such as polyalkylene glycol, glycerin and glycerin derivatives, esters such as butyl stearate, and liquid paraffin.

Paper, coated paper, and synthetic paper are used for the substrate of the image receptor.
Regardless of the dye, it is desirable to provide a layer that imparts lubricity to the surface. When using a sublimable disperse dye in the transfer layer, the dyeing layer provided on the image-receiving substrate is made of saturated or unsaturated polyester resin to provide heat resistance, releasability, and slipperiness to improve color development. Various additives are included to achieve this.

Various inorganic fine particles,
A mold release agent is used. Regardless of the pigment, the aforementioned surfactants, solid and liquid lubricants are used to impart lubricity.

The transfer body and image receptor shown below were moved at a relative running speed of 1:6.
Drive frequency IKH when recording using the energized head shown in the figure
An image containing halftones close to that of printing was obtained with an energy of 8.z, energization pulse type 8, and printing power of 11/cA, and therefore, the amount of consumption of the transfer member could be reduced to the conventional level.

That is, a transfer layer containing a sublimable disperse dye, a 9 μm film containing an aromatic polyamide resin and 20% by weight of graphite as a transfer substrate, and a coated synthetic paper with a polyester base, a polyester resin, inorganic particles, and an image receptor as a transfer layer.
A wax containing polypropylene wax and silicone oil was used.

Effects of the Invention As described above, the electric transfer recording method of the present invention requires less recording energy than the heat-sensitive transfer recording method, and can record nine images of characters at high speed. Since it can be made smaller, the running cost of the transfer body can be significantly reduced.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle of the recording method of the present invention, Fig. 2 is an enlarged sectional view showing an example of the configuration of the recording section, Fig. 3 is an electric circuit diagram connecting the transfer body and the signal source, and Fig. 4 is a transfer diagram. FIG. 6 is a plan view showing a portion for extracting a return current from the body, and a sectional view of another embodiment of the current-carrying head. 1... Transfer body, 2... Substrate, 3...
...Transfer layer, 3a...Solid slip material, 4...
...Image receptor, 5...Electrification electrode. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) Electric transfer in which a transfer body with a transfer layer formed on one surface of a base is pressed against an image receptor, and the transfer body is energized according to an image signal to generate heat, thereby transferring a part of the transfer layer to the image receptor. 1. An electrical transfer recording method characterized in that the traveling speed of a transfer member is made lower than the traveling speed of an image receptor. (2) The electrical transfer recording method according to claim 1, wherein the transfer layer contains a lubricant on its surface. (3) The electrical transfer recording method according to claim 1, wherein the image receptor includes a lubricant on its surface.