JPS6364781A - Thermal transfer recording apparatus - Google Patents

Abstract

PURPOSE:To erase the information of a printing manuscript remaining on a transfer film after use, by transferring the ink remaining on the transfer ink film after recording to an auxiliary recording medium by an auxiliary thermal recording head. CONSTITUTION:An image reversed in white and black with respect to a printing manuscript remains on a transfer ink film 11 after transfer due to a thermal recording head 12. The transfer ink film 11 having the residual image is uniformly heated over the entire width thereof by an auxiliary thermal recording head 15 and the residual ink is entirely melted to be transferred to auxiliary recording paper 16. Therefore, there is no residual information on the transfer ink film taken up as a take-up roll 11b and there is no possibility of leakage of a secret. The ink of the residual image on the transfer ink film 11 is entirely transferred to the auxiliary recording paper 16 but, by repeatedly using said auxiliary recording paper 16, informations are recorded in an overlapped state and become unreadable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thermal transfer recording device, and more particularly to a thermal transfer recording device having a function of erasing recorded information remaining on a transfer ink film after recording.

Conventional technology Conventionally, in a thermal transfer recording device using a transfer ink film, the transfer ink film and recording paper as a recording medium are overlapped and conveyed while being pressed against a thermal recording head by a platen roller. Binary information is sent line by line to the thermal recording head, and the thermal recording head applies heat only to the bits of the black information part of the information, melting or sublimating the ink applied on the transfer ink film, and transferring it to the platen roller. It is attached to the recording paper by pressure. Here, the transfer ink film is generally mounted in the form of a roll, pulled out from the roll, conveyed over a thermal recording head, and then wound up to form a roll.

Problems to be Solved by the Invention However, with this configuration, the recorded contents of the original document can be known by looking at the transfer ink film after use, so there is a risk of confidential information leakage, and it is difficult to print confidential documents. In such cases, there was a problem in that the ink film had to be manually processed after printing.

The above problem arises for the following reasons. That is, in transfer recording, recording is performed by transferring a part of the ink of the transfer ink film onto the recording paper, so for example, as shown in FIG.
When printed, as shown in Fig. 3, an image 4 in which the black and white of the printed document is reversed remains on the transfer ink film 3, and if you look at the transfer ink film after printing, you can see what kind of content was printed on the document. It's easy to understand.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a thermal transfer recording device capable of erasing information of a printed document remaining on a used transfer ink film.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an auxiliary thermal recording head and an auxiliary thermal recording head in the travel path of the transfer ink film used for recording after passing through the thermal recording head. The recording medium is provided with an auxiliary recording medium that is supplied so as to overlap the transfer ink film, and a pressure roller that overlaps the auxiliary recording medium with the transfer ink film and presses it against the auxiliary thermal recording head. .

Effect of the present invention With the above-described structure, the ink remaining on the transfer ink film after recording is partially or completely removed.
The information can be transferred to an auxiliary recording medium by an auxiliary thermal recording head, thereby making the information of the printed document on the transfer ink film unreadable. In addition, the auxiliary recording medium to which the residual information of the transfer ink film has been transferred may be printed with a ground pattern to hide the characters in advance, or by repeated use, the information transferred thereon may become unreadable. It can be done.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1st
FIG. 1 is a side view schematically showing a thermal transfer recording apparatus according to an embodiment of the present invention. In the figure, reference numeral 11 denotes a transfer ink film, which is fed out from a feeding roll lla and wound onto a winding roll llb. 1
2 is a thermal recording head that inputs image information corresponding to the document to be printed and heats a transfer ink film to be described later; 13 is a recording paper that is a recording medium for recording image information; 1;
4 is a platen roller that overlaps the transfer ink film 11 and the recording paper 13 and presses it against the thermal recording head 12; 15 is arranged on the travel path of the transfer ink film 11 after recording, and uniformly heats almost the entire width of the transfer ink film 11 to heat the remaining An auxiliary thermal recording head 16 is an auxiliary recording medium which is an auxiliary recording medium to which residual ink on the transfer ink film 11 is transferred. The structure is as follows. Note that a winding driving means (not shown) is also connected to the feeding roll 16a, and is configured to be able to rewind the auxiliary recording paper 16 wound onto the winding roll 16b. 17 is a pressure roller that presses the transfer ink film 11 and the auxiliary recording paper 16 against the auxiliary thermal recording head 15. Next, the operation of the above-mentioned apparatus will be explained.

When recording is started, recording information is sent to the thermal recording head 12 to generate heat in the necessary bit portions, thereby heating and melting the ink applied on the transfer ink film 11. The melted ink is transferred onto the recording paper 13 by the pressure of the platen roller 14, forming a necessary image. The recording paper 13 and the transfer ink film 11 move in directions A and B, respectively, in synchronization with the recording speed, and the platen roller 1
4 rotates in the C direction.

Here, on the transfer ink film ll after being transferred by the thermal recording head 12, black bits of the printing original are missing.
An image that is exactly the same black and white reversal of the printed manuscript remains.

The transfer ink film 11 with this residual image passes through the auxiliary thermal recording head 15, where it is heated evenly over its entire width, all remaining ink is melted, and the pressure of the pressing roller 17 is applied to the transfer ink film 11. Yoshi auxiliary recording paper 1
6. At this time, the pressure roller 17 is rotating in the D direction, and the auxiliary recording paper 16 is moving in the E direction. The auxiliary recording paper 16 wound onto the take-up roll 16b is wound onto the original feeding roll 16a at an appropriate time (for example, after one recording is completed or after the auxiliary recording paper reaches the end). returned and used repeatedly.

By going through the above process, there is no residual information on the transfer ink film used for recording by the thermal recording head 12 and wound up as take-up roll llb, and even if it is removed and disposed of, there is no risk of secret leakage. There's no fear. In addition, all of the ink with the residual image of the transfer ink film 11 is transferred onto the auxiliary recording paper 16, but by repeatedly using this auxiliary recording paper 16, information is recorded in an overlapping manner, making it unreadable. Become. Therefore, even if this auxiliary recording paper 16 is discarded after use, there is no risk of secret leakage. Note that when the remaining ink of the transfer ink film 11 is transferred onto a new auxiliary recording paper 16 for the first time, it is possible to see the printed information from the transfer ink, but it is not possible to remove the auxiliary recording paper 16 from the device in this state. This is not a particularly important drawback, as it is not disposed of. If it is desired to make the characters unreadable in this case as well, it is sufficient to print a background pattern on the auxiliary recording paper 16 in advance to hide the characters.

By operating the auxiliary thermal recording head 15 as described above, it is possible to make the residual image on the transfer ink film unreadable. There may be no. Therefore, the auxiliary thermal recording head 15 is installed on the operation panel of the recording device.
A residual information erasing switch is provided to switch between activation and deactivation, and the switch can be operated only when necessary.
Preferably, the auxiliary thermal recording head 15 is configured to be operable.

In the above embodiments, a heat-melting transfer ink film is used, but the present invention is not limited thereto, and a heat-sublimation transfer ink film may also be used. Further, as a mechanism for supplying the auxiliary recording paper 16 to the auxiliary recording head 15, a feed roll 16a and a take-up roll 16b are used.
However, this can also be changed; for example, the outer diameter of the pressure roller 17 may be increased and an auxiliary recording paper may be wrapped around the outer circumference of the pressure roller 17. Further, in the above embodiment, the auxiliary thermal recording head 15 uniformly heats the entire width of the transfer ink film 11 and transfers all the remaining ink onto the auxiliary recording paper 16. This configuration allows the structure of the heating part of the auxiliary thermal recording head 15 to be extremely simple, and has the advantage of making the auxiliary thermal recording head 15 inexpensive. However, the present invention is not limited to this configuration. The head 15 may print appropriate characters, symbols, patterns, etc. in a superimposed manner so that the print by the thermal recording head 12 becomes unreadable.

Effects of the Invention As is clear from the above description, the present invention provides an auxiliary thermal recording head and an auxiliary thermal recording head that is attached to the travel path of the transfer ink film used for recording after passing through the thermal recording head. By providing an auxiliary recording medium that is supplied so as to overlap the transfer ink film, and a pressure roller that overlaps the auxiliary recording medium with the transfer ink film and presses it against the auxiliary thermal recording head, the remaining on the transfer ink film after recording is provided. It is possible to transfer part or all of the ink on the transfer ink film to an auxiliary recording medium, making it possible to make the information on the printed original on the transfer ink film unreadable, and to dispose of the transfer ink film as it is. Even if the transfer ink film is disposed of, there is no secret leakage, and in other words, there is no need for processing to prevent secret leakage when disposing of the transfer ink film.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a thermal transfer recording device according to an embodiment of the present invention, FIG. 2 is a plan view of a recording paper on which thermal transfer recording was performed, and FIG. 3 is a perspective view showing the transfer ink film used at that time. 01...Recording paper, 3...Transfer ink film, 11...Transfer ink film, 11
a... Feeding roll, 11b... Winding roll, 12
... Thermal recording head, 13... Recording paper, 14... Platen roller, 15... To auxiliary thermal recording 7. C, 16.
...Auxiliary recording paper, 16a...Feeding roll, 16b.
・Name of the winding agent: Patent attorney Toshio Nakao and 1 other person1
1-m-Transfer ink film 12-Thermal needle head 13-Recording machine 14-Platen roller 15-° Bow auxiliary Jiaojifeng head I6-KanpuN yakusou-dai

Claims (1)

[Claims] a thermal recording head, a transfer ink film arranged to pass through the thermal recording head, a platen roller that overlaps the transfer ink film and a recording medium and presses it against the thermal recording head, and after passing through the thermal recording head an auxiliary thermal recording head disposed at a position in contact with the transfer ink film; an auxiliary recording medium supplied so as to overlap the transfer ink film at the auxiliary thermal recording head; 1. A thermal transfer recording apparatus comprising: a pressure roller which is superimposed on the auxiliary thermal recording head and presses the auxiliary thermal recording head.