JPS582628Y2 - Composite roll recording paper using thermal ink film - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a composite roll recording paper using a heat-sensitive ink film that does not sag during use.

A thermal ink film is obtained by mixing a thermoplastic material into an ink composition that is solid at room temperature and becomes fluid or viscous at high temperatures, and further adding a material with an adhesive effect. Ink is applied to one side of a thin polyester film.

In this recording method using a thermal ink film, a heating element is attached to the film side of the thermal ink film, and a recording paper (plain paper, etc.) is attached to the ink side, and the heating element such as a thermal head is heated to generate zero heat. Recording is obtained by transferring only the portion of the ink adhered to the ink film that is heated by the heating element onto the recording paper.

In order to obtain a recording surface using the above-mentioned recording method, a roll-shaped recording paper as shown in FIG. 1 has conventionally been used.

That is, in FIG. 1, 1 is a thermal ink film;
2 is a recording paper, and 3 is a composite roll recording paper which is stacked closely together with the thermal ink film 1 on the outside and the recording paper 2 on the inside to form a single roll.

FIG. 2 shows an example of recording using the composite roll recording paper 3 as shown in FIG. The arrayed thermal heads 6 are friction plates for applying back tension.

To record, the feed row 24 is rotated by a motor (not shown) and fed out to the left (in the direction of the arrow).
This is done by selectively heating a heating element (not shown) of the thermal head 5 according to the image signal and transferring the ink in the heated portion from the thermal ink film 1 to the recording paper 2. 1 is wound outward on the composite roll recording paper 3, as the composite roll recording paper 3 is fed out, the thermal ink film 1 becomes slack between the thermal head 5 and the composite roll recording paper 30, as shown in FIG. As a result, when the thermal ink film 1 is fed between the feed roller 4 and the thermal head 5, wrinkles occur, resulting in deterioration of image quality.

In order to solve these drawbacks, this invention constructs a composite roll recording paper so that the heat-sensitive ink film is on the inside.

This invention will be explained below with reference to the drawings.

FIG. 3 is a configuration diagram of a composite roll recording paper using a thermal ink film showing an embodiment of this invention, where 1 is a thermal ink film, 2 is a recording paper, and 3' is a recording paper 2 with the thermal ink film 1 inside. This is a composite roll recording paper that is stacked on top of each other with the paper on the outside to form a single roll.

FIG. 4 shows a state in which recording is performed using a composite roll recording paper 3' with the thermal ink film 1 on the inside as in this embodiment.

When the thermal ink film 1 and the recording paper 2, which have been recorded by the thermal head 5, are fed out to the left (in the direction of the arrow) by the feed roller 4, the recording paper 2 wound on the outside becomes slack.

Generally, in order to reduce the energy required for recording, the film constituting the thermal ink film 1 is
A very thin material of ~20 μm is used.

On the other hand, since the thickness of the recording paper 2 is generally 50 to 70 μm, even if the recording paper 2 sag as shown in FIG.
Because it is thicker, it is less prone to wrinkles.

On the other hand, since the thermal ink film 1 uses very thin polyester, the portion heated by the thermal head 5 tends to stretch and wrinkle.

Therefore, if the thermal ink film 1 is used under constant tension due to the action of the friction plate 60 as shown in FIG. 4, wrinkles can be prevented.

On the other hand, since the recording paper 2 is not deformed by the heat of the thermal head 5 and is thick and strong, it will not wrinkle even if it sag as shown in FIG. 4.

As explained above, this idea was developed by stacking a low-strength thermal ink film on the inside and a high-strength recording paper on the outside to form a roll-shaped composite roll recording paper. Since tension can always be applied, it is possible to prevent the thermal ink film from wrinkling, which has the advantage that recording can be performed without deterioration of image quality.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of a composite roll recording paper using a conventional impression ink film, Figure 2 is a diagram showing the sagging of the heat-sensitive ink film that occurs when recording is performed using the composite roll recording paper of Figure 1; Figure 3 is a configuration diagram of a composite roll recording paper using a heat-sensitive ink film, showing an example of this invention.
FIG. 4 is a diagram showing the state of slack in the thermal ink film and the recording paper when recording is performed using the composite roll recording paper of FIG. 3. In the figure, 1 is a thermal ink film, 2 is a recording paper, 3' is a composite roll recording paper, 4 is a feed roller, and 5 is a thermal head.

Claims (1)

[Scope of utility model registration request] A thin band-shaped film is coated with a recording ink that is solid at room temperature and becomes fluid or viscous at high temperatures on one side, and a recording paper is placed on the outside, and the recording paper is placed inside the thermosensitive ink film. Composite roll recording paper using a heat-sensitive ink film, which is characterized by being tightly rolled up on the ink-coated surface.