JPS587376A - Tension mechanism for ink film - Google Patents

Abstract

PURPOSE:To eliminate wrinkles or droopings even when the ink film of a wide width is utilized by a method wherein the reeling forces of the ink film for thermal transferring are equalized and a tension roller keeping a stripping angle between a recording paper and the ink film in constant is provided. CONSTITUTION:After the ink film 6, reeled out of a supplying reel 2, is put on the recording paper 8, reeled out of the supplying reel 7, they are fed inbetween a theremal head 11 and a platen 12 to effect a printing, then, the recording paper is received by a feed roller 9 while the ink film 6 is stripped from the recording paper 8 by a strip roller 4, thereafter, is reeled by a reeling roller 3 through the tension roller 5. The tension roller 5 is constituted of a plurality of pipe shaped bodies 5a-5n. By passing the ink film through such tension roller 5, the ink film is given an uniform tension even after the ink film 6 is extended or contracted complicatedly and carried with the wrinkles or droopings, and thereby enabling the printing of high quality.

Description

[Detailed Description of the Invention] Ink film hook 9 for thermal transfer of the present invention
This is about the first mechanism.

After the ink film is heated by the thermal head and the ink is transferred, there may be wrinkles and sagging due to the heat stretching of the base material. In the process, the entire surface of the ink film must be stretched with a tensile force to eliminate wrinkles and sagging, and the cutting angle FIl must be kept constant.

However, wrinkles and sag occurring in wide ink films used in 7-axis printers, printers, etc. are often caused by partial expansion and contraction. Even if it was possible to remove the sag in the wrinkles of both 11Hb, it was not possible to remove the sag in the midline fold. In addition, the method of removing creases and sagging of the ink film by applying a heavy weight to the tension row 20 weight indicated by reference numeral 1 in Fig. 1 and Fig. It was defective and even had the drawback that the thin ink film would break.

The purpose of this invention is to eliminate wrinkles and sag caused by expansion and contraction of wide ink film, and to maintain a constant angle of release of ink film. The disdainful tension mechanism t-
It is about providing.

According to the present invention, the ink film transferred from the thermal head and the platen and adhered to the recording paper is peeled off from the recording paper and taken up by the winding reel 9e11L.In the peeling process 9, a plurality of pipe shapes are formed. t tension roller and the shaft that passes through it.

By providing a combined tension mechanism, each tension row 2 corresponds to the elongation of the ink film according to its respective weight, and the tension of the entire surface of the wide ink film is equalized by 1 & 0. The tensile ink is designed to keep the angle of the recording paper and ink film on the ripping roller at a constant value even in the winding ink, making it possible to create a transfer recorder with good print image quality.

Hereinafter, the present invention will be described with reference to FIG.
- Explain in detail with reference.

FIG. 3 is a schematic diagram of a natural transfer stamping apparatus for carrying out the present invention, and FIG. 4 is a detailed diagram of one example of the tensioning mechanism of the present invention.

Figures 3 and 4 show the ink film winding mechanism and the recording paper feeding mechanism of the thermal transfer system.

The relationship between the transfer mechanism and the ink film tension mechanism is shown.

First, when showing the ink film feeding mechanism in FIG. 5, what is indicated by the reference numeral 2 is a supply reel, and a take-up reel S is provided horizontally facing each other. A peeling roller 4 and a tension roller 5 are provided. Six lines of ink film wound into a supply reel are wound around a take-up reel 5 via a peeling row 24 and a tension row 25.

Next, referring to the recording paper feeding mechanism, the one indicated by the reference numeral 7'''C is a recording paper supply reel, which is unwound onto the recording paper 8L ink film 6 on which the supply reel 79 has been wound, and the feed roller 59.IQ. I was guided between the two and had sex.

Next, referring to transfer@#II, a thermal head 1li (provided above the unwound ink ribbon 6t) is placed between the supply reel 2 and the line-scoring roller 4, and furthermore, the ink ribbon 6t
A platen 12t is provided above the thermal head 11 so as to sandwich the recording paper 8t. Finally, to show the first and fourth tension mechanisms, the tension row 25 has a pipe shape of 5 m, 5 b, 5 c, and 5 m.
It is made up of multiple pieces called -5m, and is combined with a tension ring 13 that passes through it. The shaft 13 of the casing is provided with a vertical guide groove 15a.

15b so that it can be moved up and down.

When operating the thermal transfer recording device constructed as described above, first, the recording paper rolling mechanism is driven to rotate the feed rollers 9, 1o and the platen at the same circumferential speed in the direction of the arrow. Subsequently, when the transfer mechanism is driven, the thermal head 11 moves upward and is closely pressed against the platen 12 while overlapping the ink film 6 and recording paper 87.

゛At this time, if the thermal head 11 is heated, the ink on the ink film 6 will be transferred to the recording paper 8.
Also, at this time, since they are rotating on the back plate, they are pressed tightly and the paper 8 and ink film 6 are sent out from the top 11 to the back plate 12 and the paper at the same speed.

When the ink film 6 is fed out, the tension roller 5
Then, the ink ribbon winding mechanism 9 is driven, and the take-up reel 5 is rotated in the direction of the arrow to take up the ink ribbon 6, and the tension roller 5 is moved again to the position fjkt-10000.

Through a series of operations by the tension roller 5 and the winding force 9 of the reel 5, the winding force of the ink ribbon 6 is kept approximately constant.

Next, the peeling operation of the recording paper 8 and the ink film 6 will be described. In the transfer operation 9, the recording paper 8 and the ink film 6 sent out from the grating 12 and the thermal head 11 are guided tL over the cover plate 94, and then the recording paper 8 is the feed 90-ra 9, 10, and the ink film 6 is tensioned*
-55/-1 The ink film 6, which has been selectively or selectively treated and heated by the transfer operation at a fixed peeling angle [given and peeled], expands and contracts in a complicated manner, causing wrinkles and sagging. 9. This is exposed on top of the cover roller 4 or immediately after the cover roller 2.

The tension mechanisms y5a, 5b, 5a, ----5n apply uniform tension to the entire width of the ink film 6, adapting to the wrinkles and sagging caused by the ink film.

As explained above, this tension mechanism 25a, ! lb,
5a,...5n correspond to each other, so if the ink film 6 is wide and the t1 recording rim 8
By keeping the tension angle constant over the entire width, it is possible to obtain print quality without sagging 20. Also, depending on this tension mechanism, it is necessary to overextend the tension force on the ink film 9. This may cause misprints such as transfer misalignment between the border paper and the ink film, as well as broken ink film.
Good print quality without causing scratches - quality T40

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a film conveying device having a conventional tension mechanism 1, Fig. 2 is a conventional film tension mechanism, and Fig. 5 is a thermal transfer layout including a humorous example of a tension mechanism according to the present invention. A schematic configuration diagram of the device, and FIG. 4 is a detailed diagram of the tension mechanism related to misfire. 1. Tension roller, L supply reel. Five take-up reels, four years old.翫TENKUYONRO, 7, Ll, l, a
：ノ、；）C・・”-1゜5a,5b,5o---
--5n, Thea V1M7*-ra. & ink film, Z supply reel. a Border paper, 9 feed rollers. 1 (L feed gt2-ra, It's natural head. 12, Graten, 15 tension shaft. 14 & side wall, 1 French side wall, 15a, guide groove, 15h guide groove. Applicant Daini Seikosha Co., Ltd. Kueto Patent Attorney Mogami

Claims (1)

[Claims] (1) A thin ink film made of base material is superimposed on a recording paper, and placed in a thermal transfer machine that obtains a transfer record by heating it on a thermal head. In/7(#Af)t;
C Angle 1/Lt--An ink film tensioning mechanism having at least 1% or more of tensioning angles for holding the footrest. The patent described in item 1 of this scope is characterized in that the tensile roll xpk has a plurality of pipe shapes and is combined with a penetrating shaft to eliminate partial wrinkles and sagging of the ink film. Ink film tension mechanism.