JPH04107069U - Ink ribbon feeding mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] A feeding mechanism in an ink ribbon cassette of a thermal transfer printing device, in particular, to prevent the occurrence of wrinkles in the ink ribbon and eliminate uneven winding. [Configuration] Ink ribbon drive unit 6 that sends the ink ribbon
, a load unit 3 that applies a load to the feeding of the ink ribbon on the supply side, a take-up roller drive unit that rotates the take-up roller 7 at a speed higher than the ink ribbon feed speed by the ink ribbon drive unit 6, and this take-up roller drive. A sliding mechanism 30 is provided between the winding roller and the winding roller.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention is an ID card, for example, in which images such as a face, name, and characters are printed on a magnetic card, etc. An example of a thermal transfer printing device for creating cards such as optical cards, IC cards, etc. The present invention relates to a feeding mechanism within a link ribbon cassette.

0002

[Conventional technology]

In the ink ribbon feeding mechanism of a conventional thermal transfer device, for example, the supply roller The ink ribbon is fed by rotating the take-up roller with the roller in a free state. Or, during that time, the rollers are clamped to keep the ink ribbon conveying speed constant. A constant velocity mechanism is provided.

0003

[Problem that the idea aims to solve]

However, in the above-mentioned ink ribbon feeding mechanism, the ink ribbon cannot be wound. Changes in the number of rotations (diameter) may cause fluctuations in the ink ribbon feed speed, and furthermore, Wrinkles may occur on the ink ribbon due to slipping of the roller or take-up roller, resulting in the printed image being distorted. Image quality has deteriorated.

0004

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention aims to solve the above problems by In addition, the load section that applies load to the feeding of the ink ribbon on the supply side and the take-up roller are installed. A take-up roller drive that rotates at a speed higher than the feeding speed of the ink ribbon by the ink ribbon drive unit. A sliding mechanism is provided between the moving part and the take-up roller drive part and the take-up roller. The ink ribbon feeding mechanism was configured as follows.

[0005]

[Effect]

By moving the ink ribbon while applying a load on the supply side, the supply roller Eliminate slack and apply tension to the ink ribbon between the ink ribbon and the thermal head to prevent wrinkles. To prevent the occurrence of In addition, by interposing a sliding mechanism between the take-up roller and the drive unit, Can send cribbons with constant force and speed.

[0006]

【Example】

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, Figure 1 is based on the present invention. A schematic configuration diagram of such an ink ribbon feeding mechanism, FIG. 2 is a schematic configuration diagram of a load section of the mechanism, 3 is a side view of FIG. 2, FIG. 4 is a schematic configuration diagram of the winding side mechanism of the same mechanism, and FIG. 5 is a side view of FIG. FIG. 6 is a side view, FIG. 6 is a perspective view of the take-up roller, and FIG. 7 is a schematic configuration diagram of the movement amount detection section. .

[0007] This ink ribbon feeding mechanism is used for ink coated with heat-melting or sublimation ink. The ink ribbon 1 is wound around the supply roller 2, and the ink ribbon is pulled out from the supply roller 2. 1 between the recording medium 4 and the thermal head 5 via the brake mechanism section 3 which is a load section. The ribbon is fed through the ribbon drive unit 6 at a constant speed and wound up by the take-up roller 7. printing The thermal head 5 presses the ink ribbon 1 against the recording medium 4. This is done by heating the head 5 in accordance with an image signal and transferring ink to the recording medium 4.

[0008] The brake mechanism section 3 is provided on the outer peripheral surface of the cassette F as shown in FIGS. 2 and 3. Brake rubber roller 11 wrapped with rubber 11a and this brake rubber roller 1 1 is provided with a presser roller 12 that presses down the ink ribbon 1, and when the cassette is loaded. Structure in which the ink ribbon 1 is held between the brake rubber roller 11 and the presser roller 12 It becomes. Then, the gear 13 is fixed to the end of the brake rubber roller 11. By meshing the gear 14 with the gear 13, when feeding the ink ribbon 1, It plays the role of a brake that applies a load.

[0009] The ribbon drive unit 4 has a winding drive roller 15 and an input to this winding drive roller 15. A presser roller 16 presses the ink ribbon 1, and a take-up roller 15 holds the ink ribbon. 1 and a winding roller 17 for bringing the material into close contact with each other. The application roller 17 is made of a material such as metal with good slippage, and the winding drive roller 15 is The outer periphery is wrapped with a non-slip material such as rubber, and the presser roller 16 is wrapped with a spring material. It is pressed against the take-up drive roller 15. As a result, ink ribbon 1 is wrapped It is brought into close contact with the winding drive roller 15 by the holding roller 17 and the presser roller 16, It is sent by the rotation of the winding drive roller 15.

0010 Further, gears 21 to 24 are interposed between the winding drive roller 15 and the winding roller 7. so that the rotation of the winding drive roller 15 is transmitted to the winding roller 7. There is. At this time, the diameter of the gear 21 is made larger than the diameter of the winding drive roller 15. Or, the diameter of the take-up roller 7 is made larger than the gear 24, and the take-up drive roller The amount of feed of the ink ribbon 1 by the take-up roller 7 is determined by the feed amount of the ink ribbon 1 by the The amount of winding is increased. That is, the take-up roller 7 is connected to the ink ribbon drive section. The ink ribbon is rotated at a speed higher than the feeding speed of the ink ribbon according to No. 6. This results in , if the ink ribbon 1 is sequentially wound by the winding roller 7, the winding diameter becomes even larger. Since the conveyance amount of the ink ribbon 1 increases, the ink ribbon 1 is transferred to the take-up roller 7. When installing the core to be wound, there is a slippage between the winding roller 7 and the core as shown in Fig. 6. By providing the mechanism 30, the ink ribbon 1 is always wound around the core with a constant movement amount. You can take it.

[0011] Here, the winding roller 7 inserts an inner cylinder 32 into an outer cylinder 31 that rotates integrally with the gear 24. The ink ribbon core 34 is rotatably arranged, and the ink ribbon core 34 is fixed to the inner cylinder 32 by a convex portion 33. At the same time, a spring 35 for sliding adjustment is compressed between the outer cylinder 31 and the inner cylinder 32. Ru.

0012 As shown in FIG. 7, a motor that rotationally drives the gear 21 of the winding drive roller 15 The encoder 26 is fixed to the motor shaft of the motor 25, and the encoder 26 is sandwiched between the encoder 26 and the encoder 26. If a transmission type photosensor 27 consisting of a light emitting element and a light receiving element facing each other is provided, The amount of movement of the clip ribbon 1 can be detected.

[0013]

[Effect of the idea]

As explained above, according to the present invention, no load is applied on the ink ribbon supply side. Since the paper is fed continuously, there is no ink between the supply roller and the thermal head. This eliminates sagging in the bong, prevents wrinkles, and improves the quality of printed images. Rotate the take-up roller at a speed higher than the feed speed of the ink ribbon, and Since a sliding mechanism is interposed between the roller and the drive unit, the ink ribbon can be applied with a constant force. It can be fed at high speed and uneven winding will not occur.

[Brief explanation of drawings]

[Fig. 1] Schematic configuration diagram of an ink ribbon feeding mechanism according to the present invention

[Figure 2] Schematic diagram of the load section of the mechanism

[Figure 3] Side view of Figure 2

[Figure 4] Schematic configuration diagram of the winding side mechanism of the same mechanism

[Figure 5] Side view of Figure 4

[Fig. 6] Perspective view of the take-up roller

[Figure 7] Schematic configuration diagram of the movement amount detection section

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Ink ribbon, 2... Supply roller, 3... Brake mechanism part, 4... Recording medium, 5... Thermal head, 6... Ribbon drive part, 7... Winding roller, 11... Brake rubber roller, 15... Winding drive roller , 21-24...gear, 30
...Sliding mechanism.

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Toshio Hirano 3-12 Moriya-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Within Japan Victor Co., Ltd. (72) Creator Shigeru Kato 3-12 Moriya-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Within Japan Victor Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An ink ribbon feeding mechanism that feeds an ink ribbon wound around a supply roller while winding it around a take-up roller. A load section that applies a load to the feeding of the ink ribbon on the supply side of the drive section, a take-up roller drive section that rotates the take-up roller at a speed higher than the feed speed of the ink ribbon by the ink ribbon drive section, and this take-up roller drive section. and a sliding mechanism interposed between the winding roller and the winding roller.