KR960005459Y1 - Ink ribbon feeding device - Google Patents

Abstract

None.

Description

Wrinkle prevention device of ink ribbon

1 is a schematic side view of the present invention.

Figure 2 is an exploded perspective view of the main part of the present invention.

* Explanation of symbols for main parts of the drawings

1: thermal head 2: platen roller

3: head roller 4: guide roller

5, 6: ink ribbon support rod 7: recording paper

8: guide roller fixing plate 9: head roller fixing plate

10: thermal head fixing plate 11: fixing pin

12: bolt A, B: fixing hole

13: fixing bracket

The present invention relates to an apparatus for preventing wrinkles of ink ribbons, which are frequently generated in a mechanical apparatus of a thermal transfer recording method using ink ribbons and plain paper, unlike thermal recording methods for recording images using thermal paper.

Ideally, to avoid creases in the ink ribbon, the paper should be transported while maintaining parallelism between the head rollers, guide rollers, and thermal head and platen rollers on the winding and unwinding sides of the ink ribbon. That is, when any of the above elements is out of parallelism, the ink ribbon is fed obliquely and wrinkle of the ink ribbon occurs.

For example, if the parallelism of the head roller, which is the supply side of the ink ribbon, is different from other elements, the ink ribbon flows in a skewed manner and wrinkles of the ink ribbon occur.

And, in practice, it is impossible to keep the parallelism of the elements constant because they have tolerances in product formation.

Accordingly, the present invention provides an ink ribbon wrinkling prevention device which maintains a transfer state without wrinkling by matching the parallelism of the guide roller and the head roller by tension according to the transfer of the ink ribbon as devised to solve the above problems. The purpose is.

In order to achieve the above object, the present invention provides a thermal head, a platen roller installed in contact with a lower portion of the thermal head, and a head roller and a guide positioned at both sides of the thermal head to guide the inflow and transfer of ink ribbon. An ink ribbon wrinkle preventing device having a roller, a head roller fixing plate and a guide roller fixing plate fixed to and supporting the head roller and the guide roller and fixedly installed on the thermal head fixing plate, wherein the fixing piece is located on the upper portion of the thermal head. A thermal head fixing plate configured to fix the media log, and the fixing holes having a predetermined size penetrate the central portions at both sides thereof; A fixing bracket each mounted vertically to a central portion of the upper surface of the guide roller fixing plate and the head roller fixing plate, the fixing bracket having the same size as the fixing hole of the thermal head fixing plate; The guide roller fixing plate and the head roller fixing plate are inserted so as to penetrate the fixing bracket and the fixing hole of the fixing bracket, and to maintain parallelism when the head roller 3 and the guide roller 4 are misaligned. It characterized in that it comprises a fixture provided to be able to swing from side to side.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a schematic side view of the present invention, Figure 2 is an exploded perspective view of the main design of the present invention, 1 is a thermal head, 2 is a platen roller, 3 is a head roller, 4 is a guide roller, 5 and 6 ink ribbon The support rod, 7 recording paper, 8 guide roller fixing plate, 9 head roller fixing plate, 10 thermal head fixing plate, 11 fixing pin, 12 bolt A, B fixing hole, and 13 fixing bracket, respectively.

As shown in the drawings, the present invention provides a guide roller fixing plate 8 to which the guide roller 4 is fixed and a head roller fixing plate 9 to which the head roller 3 is fixed to the thermal head fixing plate 10. Thus, the fixing holes A of a predetermined size are formed to penetrate the central portions of both sides of the thermal head fixing plate 10, and at the center of their upper surface to form the center of gravity of the guide roller fixing plate 8 and the head roller fixing plate 9. The fixing brackets 13 are mounted vertically, respectively, and the fixing holes A and the fixing holes B of the same size are formed in the upper center portion of the fixing bracket 13, respectively.

In addition, a fixing tool 11 is provided such that the fixing hole B of the fixing bracket 13 is inserted into the fixing hole A of the thermal head fixing plate 10, and the head roller 3 is a guide roller ( 4) The guide roller fixing plate 8 and the head roller fixing plate 9 can be swayed left and right about each fixing hole A and B into which the fixture 11 is fitted so that parallelism can be maintained when distortion occurs. do.

Here, the fastener 11 is composed of one fixing pin and an E-ring fastened to both sides of the fixing pin, as shown in FIG. 2, and as another embodiment, the fastener 11 includes the head roller fixing plate. The guide roller fixing plate using two fixing pins that can fix each of the center of gravity of the (9) and the center of gravity of the guide roller fixing plate 8 and the thermal head fixing plate 10 at the same time instead of one fixing pin ( 8) and the head roller fixing plate 9 can be moved independently.

In addition, the bolt 12 which is not described is a fastener for fixing the head roller 3 and the guide roller 4 to the fixing plates 8 and 9.

According to the present invention, the guide roller fixing plate 8 and the head roller fixing plate 9 are automatically moved by the tension of the ink ribbon even when the incidence of the ink ribbon is not parallel so that the parallelism of one element related to the transfer of the ink ribbon is changed. By moving together, it is possible to prevent wrinkle of the ink ribbon.

Claims (3)

A thermal head 1, a platen roller 2 installed to be in contact with the lower portion of the thermal head 1, and a head roller positioned at both sides of the thermal head 1 to guide the inflow and transfer of the ink ribbon. (3) and the guide roller (4), the head roller fixing plate (9) and the guide roller fixing plate for fixing and supporting the head roller (3) and the guide roller (4) and fixedly installed on the thermal head fixing plate (10) (8) An ink ribbon wrinkle prevention device, comprising: an upper portion of the thermal head (1) fixed to a medium by a fixing piece, and formed to have a fixing hole (A) of a predetermined size in a central portion at both sides thereof. A thermal head fixing plate 10; The guide roller fixing plate 8 and the head roller fixing plate 9 are mounted vertically to the center of their upper surface so as to form a center of gravity of the guide roller fixing plate 8, and fixed to the center of the same size as the fixing hole A of the thermal head fixing plate 10. A fixing bracket 13 on which a hole B is formed; And inserted into the fixing hole B of the fixing bracket 13 and the fixing hole A of the thermal head fixing plate 10 to maintain parallelism when the head roller 3 and the guide roller 4 are distorted. Ink ribbon wrinkle prevention, characterized in that it comprises a fastener (11) provided so that the guide roller fixing plate (8) and the head roller fixing plate (9) around the fixing holes (A, B) so as to swing from side to side Device. According to claim 1, The fastener 11 is a fixing pin for passing through the fixing hole (B) of the fixing bracket 13 and the fixing hole (A) of the thermal head fixing plate 10 at the same time, and An ink ribbon wrinkle preventing device, characterized in that consisting of an E-ring fitted to prevent the release pin. The apparatus of claim 1, wherein the fastener (11) comprises fixing pins for fixing the head roller fixing plate (9) and the guide roller fixing plate (8) separately to the thermal head fixing plate.