JP3386173B2 - Recording device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device for use in a printer or the like, which prints on a recording medium such as thermal paper with a thermal head.

[0002]

2. Description of the Related Art Conventionally, in an image forming process of a recording device, as shown in FIG. The back side of the recording body 2 (the recording body substrate 2 a ) by contacting with the body film 2 b
Receding contact angle to form a shown region (latent image) corresponding to the heating temperature on the recording film 2 b by selectively heated by heating means such as thermal head 1 from containing Akirairozai in this region The recording material was supplied and visualized.

[0003]

However, in the above-mentioned conventional recording apparatus, the latent image forming liquid 4 on the porous body 3 is used.
Of the amount of impregnation is not constant, the recording film or dripping occurs becomes excessive supply of the latent image forming liquid 4 to 2 b, etc. a latent image forming amount supplied to the inverse is insufficient is incomplete There is a problem of
Therefore, a mechanism for supplying the latent image forming liquid 4 and a mechanism for controlling the amount of impregnation are separately required, which causes a problem that the configuration becomes complicated. In view of the above, the present invention solves the above-mentioned problems of the prior art and allows the latent image forming liquid holding member to be impregnated with the latent image forming liquid without providing a latent image forming liquid supply mechanism, an impregnation amount control mechanism, or the like. It is an object of the present invention to provide a recording device capable of maintaining a constant value.

[0004]

The gist of the present invention is to provide a recording body comprising a substrate and a recording body film formed on the surface of the substrate, and a latent image forming liquid impregnated into the recording body film.
The recording medium film includes a latent image forming liquid holding member that forms a thin layer of a latent image forming liquid on the surface of the recording medium when in contact with the recording medium, and heating means for heating from the substrate side of the recording medium. In the recording apparatus, a latent image is formed by forming a receding contact angle according to the heating temperature on the recording medium, and a recording material containing a coloring material is brought into contact with the latent image to form a visible image. A cross-linked polymer is used as the holding member, and the vapor pressure during heating is changed as the latent image forming liquid.
This is because a liquid whose pressure is below atmospheric pressure was used.

[0005]

Therefore, the latent image forming liquid slightly exudes in the polymer cross-linked body impregnated with the latent image forming liquid, and a thin layer of the latent image forming liquid is formed on the surface of the recording medium when contacting the recording medium. In this state, when the recording medium is selectively heated by the heating means, a latent image is formed. The bleeding of the latent image-forming liquid on the surface of the crosslinked polymer only forms a very thin layer, and does not cause dripping. Further, addition of the latent image forming liquid
The vapor pressure at the time of heating is equal to or lower than the normal pressure, the evaporation amount due to heating of the latent image forming liquid and the evaporation amount over time are extremely small, and the latent image forming liquid is not insufficient. In this way, the impregnated amount of the latent image forming liquid of the crosslinked polymer is kept substantially constant.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, the crosslinked polymer 5 as a latent image forming liquid holding member is impregnated with the latent image forming liquid 4 and is in contact with the recording material film 2 b of the recording material 2. A latent image is formed by pressing the thermal head 1, which is a heating means, from the back side (recording body substrate 2 a ) of the above. The crosslinked polymer 5 is made of rubber, gel or the like, and the latent image forming liquid 4 is used.
For this, silicone oil or the like having a vapor pressure at the time of heating equal to or lower than atmospheric pressure is used. Therefore, it is possible to use a silicone rubber, silicone gel or the like obtained by crosslinking silicone as a polymer cross-linked product. In this case, since the silicone rubber and the silicone gel contain the oil component before cross-linking, it is not necessary to separately impregnate the latent image forming liquid 4.

[0007] In this configuration, the crosslinked polymer 5 there is elastic, it tends to follow the irregularities of the recording film 2 b surface, good contact between the recording medium 2. Further, since the latent image forming liquid 4 slightly exudes on the surface of the polymer cross-linked body 5, the recording body 2
Thin layer of the latent image forming liquid 4 are formed on the recording film 2 b surface is contacted with. In this state, the recording body 2 is selectively heated by the thermal head 1 from the substrate 2a side, and an area showing a receding contact angle corresponding to the heating temperature, that is, a latent image is formed. A recording material (ink) containing a color developing material is brought into contact with this latent image to visualize it.

By the way, since the bleeding of the latent image forming liquid on the surface of the polymer crosslinked body 5 is such that an extremely thin layer is formed, even if the polymer crosslinked body 5 and the recording body 2 are separated, There is almost no adhesion of the latent image forming liquid 4 to 2. Also,
Since the vapor pressure of the latent image forming liquid 4 is low, the amount of evaporation of the latent image forming liquid 4 due to heating and the amount of evaporation with time after formation of the latent image are extremely small, so that the latent image forming liquid 4 can be used for a long time.

Next, examples in which various materials are used in the above structure will be shown. In Example 1, as a recording body 2, a fluorine-containing acrylate material TG-702 (manufactured by Daikin Industries, Ltd.) was diluted with Freon 113 at a volume ratio of 3 times and coated on a polyimide film (Toray DuPont, thickness 12.5 μm). After that, use the one dried at 130 ℃ for 30 minutes,
Silicone rubber (SE1891K, manufactured by Toray Dow Corning Silicone) was used as the latent image forming liquid holding member 5, and silicone oil (oil before silicone gel crosslinking) was used as the latent image forming liquid 4. As a result of the implementation, the latent image could be formed without replenishing the latent image forming liquid 4.

Further, in Example 2, as the recording body 2, a solution-polymerized fluorinated acrylate material VISCOAT 17F (manufactured by Osaka Organic Chemical Industry) was diluted with Freon 113, and a polyimide film (Toray DuPont, thickness 12.5) was used.
μM) and then dried at 130 ° C. for 30 minutes, and as the latent image forming liquid holding member 5, silicone gel (SE1887GEL, manufactured by Toray Dow Corning Silicone) is used. Silicone oil (oil before silicone gel crosslinking) was used as 4. As a result of the execution, the latent image could be formed without replenishing the latent image forming liquid as in Example 1.

Further, in Example 3, as the recording body 2, a fluorine-containing acrylate material VISCOAT 17F (manufactured by Osaka Organic Chemical Industry) was solution-polymerized (solution: 1-1-1 trichloroethane) and diluted with Freon 113. After coating a polyimide film (Toray DuPont, thickness 12.5 μm) and drying at 130 ° C. for 30 minutes, the latent image forming liquid holding member 5 was used as a silicone gel (SE188).
6 GEL, manufactured by Toray Dow Corning Silicone Co., Ltd., and silicone oil (oil before silicone gel crosslinking) was used as the latent image forming liquid 4. As a result of the execution, the latent image could be formed without replenishing the latent image forming liquid as in Example 1.

[0012]

As described above, since the polymer cross-linked body is used as the latent image forming liquid holding member which is impregnated with the latent image forming liquid and the liquid having a low vapor pressure is used as the latent image forming liquid, the latent image forming is performed. Without providing a liquid supply mechanism or an impregnation amount control mechanism for controlling the impregnation amount of the latent image forming liquid to the latent image forming liquid holding member,
The latent image forming liquid can be kept almost constant by avoiding the imbalance of the supply amount such as the latent image forming liquid becoming insufficient or conversely excessive, and stable recording can be performed with a simple configuration. it can.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a recording apparatus showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a portion A of FIG. 1 showing the composition of a crosslinked polymer.

FIG. 3 is a schematic configuration diagram showing a conventional recording apparatus.

[Explanation of symbols]

1 heating means 2 recording 2a substrate 2b Recording body film 3,5 Latent image forming liquid holding member 4 Latent image forming liquid 5 cross-linked polymer

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B41L 17/00-17/06 B41M 5/00 B41M 5/26

Claims (4)

(57) [Claims] 1. A recording medium comprising a substrate and a recording medium film formed on the surface of the substrate, and a latent image forming liquid impregnated therein, and the latent image forming liquid is formed on the surface of the recording medium at the time of contact with the recording medium film. Forming a thin layer of
And a heating means for heating the recording medium from the substrate side, forming a latent image by forming a receding contact angle on the recording medium film according to the heating temperature. In a recording apparatus for forming a visible image by bringing a recording material containing a coloring material into contact with an image, the latent image forming liquid holding member is made of a crosslinked polymer, and the latent image forming liquid has a constant vapor pressure during heating. A recording device characterized by being below the pressure . 2. A latent image forming liquid impregnated with a recording medium comprising a substrate and a recording medium film formed on the surface of the substrate and the latent image forming liquid when the recording medium is contacted. Forming a thin layer of
A latent image forming liquid holding member for heating, a heating unit for heating from the substrate side of the recording body, and an image removing unit are provided, and a latent image is formed by forming a receding contact angle on the recording body film according to the heating temperature. In the recording apparatus, the latent image is formed by contacting a recording material containing a coloring material with the recording material to form a visible image, and the image is transferred to recording paper, and then the image is erased by heating by an image removing unit. The recording device, wherein the latent image forming liquid holding member is made of a crosslinked polymer, and the vapor pressure of the latent image forming liquid when heated is not higher than atmospheric pressure . 3. The recording apparatus according to claim 1, wherein a silicone rubber is used as the crosslinked polymer. 4. The recording apparatus according to claim 1, wherein a silicone gel is used as the crosslinked polymer.