KR20220074162A - Thermal transfer printer having guide type swing lever - Google Patents

Abstract

The present invention relates to a thermal transfer printing apparatus having a guide swing lever, and in particular, a swing lever that rotates so that a swing gear is engaged with a reel gear and a rotation guide supported on an inner wall of a frame to enable stable operation. It relates to a thermal transfer printing apparatus having a guide swing lever.

Description

Thermal transfer printing device with guide swing lever {THERMAL TRANSFER PRINTER HAVING GUIDE TYPE SWING LEVER}

The present invention relates to a thermal transfer printing apparatus having a guide swing lever, and more particularly, a swing lever that rotates to engage a reel gear with a swing gear and a rotation guide supported on the inner wall of a frame for stable operation It relates to a thermal transfer printing apparatus having a guide swing lever that enables it.

Recently, with the spread of various wireless communication terminals equipped with camera functions and computing functions, including smartphones, tablet PCs, or notepads, users are taking pictures or receiving application services using wireless communication terminals.

For this reason, a thermal transfer printing apparatus that interworks with a wireless communication terminal to instantly print a photo taken by the wireless communication terminal or provides various printed materials as a part of a terminal application service has been popularized.

The thermal transfer printing device uses a method of transferring the ink such as dye or pigment applied to the ink ribbon onto the printing paper by applying heat to the ink ribbon with a thermal print head (TPH). do.

1 illustrates a conventional thermal transfer printing apparatus as an example. As shown, the thermal transfer printing apparatus 200 is configured such that the cartridge 100 is inserted from the side.

In addition, the thermal transfer printing apparatus 200 includes a printer body 210 and a side cover 220 formed with an insertion hole into which the cartridge 100 is inserted, the printer body 210 is printed after printing. and an outlet 212 through which paper is taken out.

The side cover 220 is rotatably installed on the side of the printer body 210 to selectively open and close the cartridge insertion port according to whether the cartridge 100 is mounted or detached.

2 and 3 show the cartridge mounted in the thermal transfer printing apparatus in more detail.

As shown, the cartridge 100 accommodates the ink ribbon and the printing paper, and the supply reel 120, the take-up reel 130, the cartridge cover part 140 and the pressurization are installed in the cartridge body part 110 of the frame structure. It includes a hole 150 .

Here, the cartridge body 110 includes a printing paper receiving unit 111 in which printing paper is accommodated, and a ribbon frame 114 in which a supply reel 120 and a take-up reel 130 are mounted to transport the ink ribbon.

The cartridge cover unit 140 is composed of a supply reel cover 140a that covers the supply reel 120 and a take-up reel cover 140b that covers the take-up reel 130, and these covers have a ribbon guide for guiding the transfer of the ink ribbon. are provided respectively.

Therefore, the thermal transfer printing apparatus 200 receives the printing paper and the ink ribbon through the cartridge 100, and then applies heat to the thermal transfer head while placing the ink ribbon on the printing paper so that the ink is transferred (printed). do.

For example, in a state in which the ink ribbon is stacked on the printing paper, one color is transferred by applying heat to the ink ribbon with the thermal transfer head while transferring them forward at the same time, and the method of transferring only the printing paper to the rear after returning the other color is repeated. do.

To this end, the thermal transfer printing apparatus 200 is a driving engine (ENG, engine) for inputting the ink ribbon and the printing paper to form a single path for transferring the ink ribbon to one side and a multi-path for reciprocating the printing paper back and forth several times. includes

4, the cartridge 100 is assembled in the frame F of the engine, and the engine ENG and the cartridge 100 assembled with each other are integrally attached to the printer body 210 of the thermal transfer printing apparatus 200. installed to enable printing.

At this time, the thermal transfer printing apparatus controls the timing of the take-up reel 130 for supplying the ink ribbon and the feed roller (not shown) for supplying the printing paper, so that they are interlocked or released via a rotatable swing lever.

Specifically, a swing gear meshed with the feed gear of the feed roller is provided, and the feed gear and the swing gear are axially coupled to the swing lever so that the swing gear is meshed with or released from the reel gear according to the forward and backward rotation direction of the swing lever.

Therefore, when the swing lever is rotated to one side (the front side), the swing gear meshes with the reel gear, and in this meshed state, the take-up reel 130 and the feed roller rotate simultaneously and interlock with each other.

However, in the prior art as described above, as the swing lever repeats the operation of rotating around the feed roller, if the posture of the swing lever is changed or vibration occurs, the interlocking state between the take-up reel 130 and the feed roller becomes unstable. there was

For example, a phenomenon in which the swing gear is unstablely meshed with the reel gear of the take-up reel or cannot rotate while the gears are engaged due to excessively strong meshing occurs, and in severe cases, there is a problem leading to separation or damage of the swing lever.

Patent Publication 10-2015-0088402 Registered Patent 10-1507064 Patent Publication 10-2015-0088402 Registered Patent 10-1486327

The present invention is to solve the above-mentioned problems, a guide swing lever that enables a stable operation by providing a rotation guide supported on the inner wall of the frame to a swing lever that is rotated so that the swing gear is engaged with the reel gear. An object of the present invention is to provide a thermal transfer printing apparatus.

To this end, in the thermal transfer printing apparatus having a guide swing lever according to the present invention, an ink ribbon and a cartridge 100 for supplying printing paper are coupled to a frame in which a driving engine ENG is installed, the ink ribbon a reel gear provided at the axial end of the take-up reel for winding; a feed gear spaced a predetermined distance backward from the reel gear and provided at an axial end of a feed roller for conveying the printing paper; a swing gear meshed with the feed gear between the reel gear and the feed gear; a swing lever to which the feed roller is shaft-coupled to one side, the swing gear is shaft-coupled to the other side, and the swing gear rotates around the shaft center of the feed roller to engage the reel gear; and a rotation guide provided on the swing lever and supported by abutting against the inner surface of the frame during rotation as it protrudes toward the outside of the swing lever.

In this case, the swing lever includes a lever body; a first coupling part formed at a lower portion of the lever body and to which the feed roller is axially coupled; and a second coupling part formed at an eccentric forward position from the upper portion of the first coupling part of the lever body, and to which the swing gear is shaft coupled.

In addition, the rotation guide is preferably provided at an eccentric position toward the front from the upper portion of the second coupling portion.

In addition, it is preferable that a plurality of fine protrusions having a round surface are protruded from the support surface in contact with the frame in the rotation guide.

In addition, a stopper provided under the first coupling part and installed in the locking part formed in the frame so that one end or the other end is caught by the locking part according to the swing operation of the swing lever to limit the swing angle to within a set range. It is preferable to do

In addition, it is preferable to further include an auxiliary guide provided on the swing lever and supported in contact with the parts constituting the engine ENG when it is rotated as it protrudes toward the inner direction of the swing lever.

In addition, the platen roller is installed to be spaced apart from the rear side of the feed roller, raising the ink ribbon and the printing paper in contact with the thermal transfer head; and a link member disposed inside the swing lever, to which the platen roller is shaft-coupled to one side and the feed roller is shaft-coupled to the other side, wherein the auxiliary guide is adapted to fit the outer surface of the link member It is preferable that it is formed to protrude inward so as to be touched and supported.

As described above, the present invention is mounted on a thermal transfer type printing apparatus and driven to supply ink ribbon and printing paper. In particular, a swing lever, which is rotated to engage the swing gear with the reel gear, is provided with a rotation guide supported on the inner wall of the frame to enable stable operation.

1 to 4 are views showing a thermal transfer printing apparatus according to the prior art.
5 is a perspective view showing a thermal transfer printing apparatus having a guide swing lever according to the present invention.
Figure 6 is an exploded view showing the cartridge of the present invention.
7 is an embodiment showing an ink ribbon and printing paper applicable to the present invention.
8 is a top view of a thermal transfer printing apparatus having a guide swing lever according to the present invention.
9 is a bottom view of a thermal transfer printing apparatus having a guide swing lever according to the present invention.
10 is a partial view showing the front driving unit of the present invention.
11 is a block diagram showing the front drive unit of the present invention.
12 is an exploded view showing the front driving unit of the present invention.
13 is a device state diagram showing the rotation guide of the present invention.

Hereinafter, a thermal transfer printing apparatus having a guide swing lever according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5, the present invention can be applied to a thermal transfer printing apparatus including a frame (FR), a cartridge 300 and an engine 400, the cartridge 300 is inserted and mounted in the frame (FR), the ink ribbon and The printing paper is put in, and the engine 400 is mounted on the frame FR to operate a reel or a roller so that the ink ribbon and the printing paper are transported.

In the illustrated embodiment, the frame (FR) is made of a wall structure bent at both ends of the bottom surface and the width direction of the bottom surface (FR). As described above, the engine 400 is installed in the frame FR, and the cartridge 300 is assembled by sliding insertion through the insertion hole formed in the side of the frame FR.

Referring first to the cartridge 300 through FIG. 6 , the cartridge 300 is a ribbon frame 310 , a supply reel 320 , a winding reel 330 , a supply guide 340 , and a winding guide 350 as an embodiment. and a cassette 360 .

In this configuration, the ribbon frame 310 includes a pair of left and right frames spaced apart from each other in the width direction, and the supply guide 340 and the winding guide 350 cross the ribbon frame 310 in a state spaced apart in the front and rear directions, respectively. installed on the

The supply reel 320 is rotatably installed on the ribbon frame 310, and the ink ribbon is guided through the supply guide 340 when rotating. The take-up reel 330 is rotatably installed on the ribbon frame 310 at the rear of the supply reel 320 to wind the ink ribbon 10 drawn in by the take-up guide 350 .

A tension guide 351 may be further provided between the supply reel 320 and the take-up reel 330 . The tension guide 351 is detachably assembled to the fitting frame 352 on both sides thereof, whereby the transfer path of the ink ribbon 10 is sequentially formed.

The cassette 360 is provided at the front end of the ribbon frame 310 and is coupled to the ribbon frame 310 through an assembly method in an embodiment. At this time, the front side is the direction in which the printing paper 20 is drawn out from the cassette 360 . Accordingly, the cassette 360, the supply reel 320, and the take-up reel 330 are sequentially arranged from the rear side to the front side.

According to the above configuration, a plurality of printing papers 20 stacked in the accommodating part of the cassette 360 are slidably drawn out by the engine 400 to the front side, and on the supply reel 320 by the take-up reel 330 The transferred ink ribbon 10 is positioned.

As described again below, the engine 400 includes a servo motor, a gear assembly (reduction gear), and several reels or rollers for transporting the printing paper and the ink ribbon, the printing paper 20 and the ink ribbon 10 is transferred at the designed timing.

In addition, a thermal print head (TPH) is disposed in an empty space between the supply guide 340 and the winding guide 350 to apply heat to the ink ribbon 10 on which ink is applied. Therefore, printing is made on the printing paper 20 being transferred from the lower side.

For example, as shown in FIG. 7, in a state in which the ink ribbon 10 is stacked on the printing paper 20, they are simultaneously transferred to the front, and one color is transferred by applying heat to the ink ribbon 10 with a thermal transfer head (TPH). , then repeats the method of transferring other colors after returning only the printing paper 20 to the rear.

At this time, the ink provided by the ink ribbon 10 includes a dye 13a to implement colors such as cyan, magenta and yellow, and a thermal transfer head (TPH). It is transferred to the printing paper 20 in a sublimation method according to the amount of heat transferred from the.

In addition, the pigment (pigment, 13b) to implement the point may also be included. The pigment is usually placed on the back side of the color dye to be printed on it after printing the color, and is transferred to the printing paper in a molten manner.

The overcoating layer 14 provided behind the point ink (pigment) layer is for forming an overlay layer that protects the printing surface of the printing paper 20, and depending on the ink, the color ink layer 13a and the point ink layer ( 13b) is transferred and then coated.

8, the engine 400 includes a rear driving unit installed on the rear side of the frame (FR), a front driving unit installed on the front side of the frame (FR), and a thermal transfer head (TPH) installed between the rear driving unit and the front driving unit. is comprised of

Here, the rear driving unit puts the printing paper accommodated in the cassette 360 toward the front side where the thermal transfer head (TPH) is installed. For example, after the printing paper is discharged from the first cassette 360, the printing paper move back and forth.

To this end, the rear driving unit includes a rear motor 410 , a rear gear assembly 411 , an idle gear 412 , a pickup roller 413 , and a pickup lever 414 , the upper front portion of the cassette 360 . The rotating pickup roller 413 comes into contact with the printing paper 20 exposed through the guide hole 361 formed therethrough, and the printing paper 20 is put in.

Specifically, the rotation shaft of the rear motor 410 and the input end of the rear gear assembly 411 are connected, and the output end of the rear gear assembly 411 meshes with the idle gear 412 (gear meshing). The idle gear 412 meshes with a gear provided at one end of the shaft of the pickup roller 413 .

In addition, as the other end of the shaft of the pickup roller 413 is fixed to the pickup lever 414 whose front end is rotated in a seesaw type, when it descends during rotation by the rear motor 410, the printing paper through the guide hole 361 The printing paper 20 is put in contact with (20). Conversely, when the pickup roller 413 rises, the supply is released until the printing of the pre-loaded printing paper 20 is finished.

9, the bottom of the engine 400 is provided with a slide plate 420 that moves forward and backward, and the slide plate 420 includes a pickup plate 421 extending upward from the outer side of the rear part and the center side of the front part. Includes a lifter 422 provided in the.

In addition, the slide plate 420 has a length set so that the lifter 422 can be inserted into the lower part of the platen roller ('440' in FIG. 10) and lifted when sliding forward, and the pickup plate 421 has an insertion groove. 421a is formed long in the longitudinal direction.

Accordingly, when the idle gear 412 rotates in a state where the rotating protrusion 412a protruding inward from the outer circumferential surface of the idle gear 412 is inserted into the insertion groove 421a of the pickup plate 421, the slide plate 420 is It moves forward to lift the platen roller 440 .

As above, when the platen roller 440 is rotated (clockwise) and lifted by the slide plate 420, the ink ribbon 10 and the printing paper 20 are brought into close contact with the thermal transfer head (TPH) to achieve thermal transfer. do.

10 and 11, the front driving part of the frame FR includes a front motor 430, a front gear assembly (refer to '431' in FIG. 9), a platen roller 440, a feed roller 450, The pressure roller 460 and the swing gear 470 are installed, and the feed gear 451 is provided at both ends of the feed roller 450 .

In addition, the platen plate 441 on which the platen roller 440 and the feed roller 450 are mounted at one end and the other end respectively so that the platen roller 440 rotates around the feed roller 450 and swing at both ends The gear 470 includes a bracket 461 that is rotatably installed.

In addition, the link member 480 and the feed roller 450 are shaft-coupled to the shaft of the platen roller 440 and the shaft of the feed roller 450 to limit the rotation of the swing lever and the swing gear 470 within a set range. and a swing lever 490 axially coupled to the shaft of the swing gear 470 and the shaft of the swing gear 470 .

At this time, the front motor 430 drives the feed roller 450 by being engaged with one side of the feed gear 451 of the feed roller 450 through a front gear assembly 431 such as a reduction gear. Of course, although not shown, it is also applicable to a type in which the take-up reel 330 is driven by meshing with the reel gear 331 according to an embodiment.

The platen roller 440 is supported on the spring to absorb shock when it comes into contact with the thermal transfer head (TPH), and the rear side of the platen plate 441 on which the platen roller 440 is installed is rotatable with the frame (FR). It is not bound to and has a free end.

The feed roller 450 is rotatably supported on the frame FR or the like in front of the platen roller 440 , and the pressure roller 460 is disposed above the feed roller 450 to include the feed roller 450 and the pressure roller. The ink ribbon 10 and the printing paper 20 are bitten between the 460 so that they can be transferred.

The swing gear 470 is always engaged with the feed gear 451 at the end of the feed roller 450 , and the swing gear 470 is rotated (swinged) based on the shaft center of the feed roller 450 to form the take-up reel 330 . When engaged with the reel gear 331 , the take-up reel 330 is rotated (interlocked) in synchronization with the rotation of the feed roller 450 .

Specifically, when the swing lever 490 rotates clockwise (based on the drawing) based on the axial center of the feed roller 450 by the thrust according to the rotation of the feed gear 451, the swing gear 470 rotates the take-up reel 330 ) is meshed with the reel gear 331 and interlocked.

According to this configuration, printing proceeds while the ink ribbon 10 and the printing paper 20 are transferred forward through between the feed roller 450 and the pressure roller 460 . In addition, when the printing paper 20 is moved backward, the engagement between the swing gear 470 and the take-up reel 330 is released (not engaged), so that only the printing paper 20 is transported backward by the pickup roller 413 , The next color or point is waiting for printing.

Accordingly, when the swing gear 470 is meshed again, the process in which the printing paper 20 moved backward together with the ink ribbon 10 is transferred forward again is repeated. That is, a single path for transferring the ink ribbon 10 to one side and a multiple path for reciprocating the printing paper 20 back and forth are formed several times.

On the other hand, for example, to which the present invention is applied to the thermal transfer printing apparatus having the above configuration, the reel gear 331 is provided at the axial end of the take-up reel 330 for winding the ink ribbon 10, and the feed gear 451 ) is provided at the axial end of the feed roller 450 for transferring the printing paper 20 in a state spaced apart from the reel gear 331 by a predetermined distance to the rear side.

In addition, the swing gear 470 is meshed with the feed gear 451 between the reel gear 331 and the feed gear 451, and the feed roller 450 is shaft-coupled to one side of the swing lever 490, and the other A swing gear 470 is shaft-coupled to the side. The swing lever 490 rotates the swing gear 470 around the axis of the feed roller 450 to engage the reel gear 331 .

At this time, as shown in FIG. 12 , the present invention further includes a rotation guide 491 , which is provided on the swing lever 490 , and is formed to protrude toward the outside of the swing lever 490 . Abuts against the inner surface of the frame (FR) during rotation to be supported.

Therefore, even when the swing lever 490 repeats the operation of rotating around the feed roller 450 , the swing lever 490 is supported on the wall surface of the frame FR through the rotation guide 491 , the swing lever 490 . ) prevents the posture from being distorted or vibration during rotation, enabling stable and precise driving.

For example, it is possible to prevent a phenomenon in which the swing gear 470 is not meshed with the reel gear 331 of the take-up reel 330 or is excessively deeply meshed and the gears are not rotated in the meshed state by improving the operation stability. .

More specifically, the swing lever 490 includes a lever body 490a, a first coupling part 490b formed under the lever body 490a and to which a feed roller 450 is shaft-coupled, and the first coupling part ( It is formed at an eccentric position from the upper portion of the 490b to the front side and includes a second coupling portion 490c to which the swing gear 470 is shaft-coupled.

Therefore, after assembling the end of the feed roller 450 into the first coupling part 490b having a hollow part, the cap (CAP) is assembled on the shaft to prevent separation, and the second coupling part 490c has a swing gear. Insert the hook (HK) protruding from the shaft center of the 470 to prevent separation.

In this configuration, the above-described rotation guide 491 is provided on the upper portion of the lever body 490a, and a stopper 492 is provided on the lower portion to limit excessive rotation of the swing lever 490. In addition, an auxiliary guide 493 protruding inwardly is provided on the side.

Specifically, the rotation guide 491 is provided in a position eccentric to the front from the upper portion of the second coupling portion 490c, for example, a shape protruding outward from the portion moved clockwise in the second coupling portion 490c. has

Therefore, when the rotation guide 491 protruding outward than the lever body 490a as shown in FIG. 13 is supported in contact with the inner wall of the frame FR for mounting the engine 400, the swing lever 490 is distorted during operation or Stable swing operation is possible by suppressing shaking or vibration.

However, it is preferable that a plurality of fine protrusions 491a having a round surface are respectively protruded from the support surface in contact with the frame FR in the rotation guide 491 . For example, the hemispherical fine protrusion reduces friction with the frame FR and enables support during rotation, so that the swing lever 490 rotates stably even without lubricating the frame FR.

The stopper 492 is provided in the lower portion of the first coupling part 490b as an embodiment, and is installed in the stopping part formed in the frame FR, so that one end or the other end is caught by the stopping part according to the swing operation of the swing lever 490 . Limit the swing angle within the set range.

The locking part may be applied, for example, by cutting a part of the frame FR to form an opening, and the stopper 492 is inserted into the opening and has a wing shape that is spaced apart from the upper end of the opening to a lower side by a certain height. Therefore, the rotation range (angle) is limited as the front or rear end is caught on the top of the opening during rotation.

According to this, the ink ribbon ( 10) to be accurately wound on the take-up reel 330 .

The auxiliary guide 493 is provided on the swing lever 490 together with the rotation guide 491 . As the auxiliary guide 493 protrudes toward the inner direction of the swing lever 490, it is supported in contact with the inner component constituting the engine 400 when it is rotated.

Accordingly, the above-described rotation guide 491 is supported on the outside and the auxiliary guide 493 is supported on the inside to enable stable support on the inside and outside of the swing lever 490 .

However, if the support is possible, the auxiliary guide 493 may be supported by various parts located inside it depending on the type of the printing apparatus, but may be supported by the link member 480 here.

As described above, the platen roller 440 is shaft-coupled to one side of the link member 480 and the feed roller 450 is shaft-coupled to the other side. In addition, the auxiliary guide 493 is supported on a part (rear exposed surface) that is assembled inside the feed gear 451 and partially exposed.

Therefore, it is possible to stably support the rotation (swing) of the swing lever 490 by the auxiliary guide 493 as well as the rotation guide 491 .

In the above, specific embodiments of the present invention have been described above. However, the spirit and scope of the present invention are not limited to these specific embodiments, but various modifications and variations are possible within the scope that does not change the gist of the present invention. You will understand when you grow up.

Therefore, since the embodiments described above are provided to fully inform those of ordinary skill in the art to which the present invention belongs the scope of the invention, it should be understood that they are exemplary in all respects and not limiting, The invention is only defined by the scope of the claims.

FR: frame
300: cartridge
310: ribbon frame 320: supply reel
330: take-up reel 340: supply guide
350: winding guide 360: cassette
400: engine
410: rear motor 411: rear gear assembly
412: idle gear 413: pickup roller
414: pickup lever 420: slide plate
430: front motor 431: front gear assembly
440: platen roller 450: feed roller
451: feed gear 460: pressure roller
470: swing gear 480: link member
490: swing lever 491: rotation guide
492: stopper 493: auxiliary guide

Claims (7)

In the thermal transfer printing apparatus in which the cartridge 300 for supplying the ink ribbon 10 and the printing paper 20 to the frame FR equipped with the driving engine 400 is coupled,
a reel gear 331 provided at the shaft end of the take-up reel 330 for winding the ink ribbon 10;
a feed gear 451 spaced apart from the reel gear 331 by a predetermined distance to the rear side and provided at the shaft end of the feed roller 450 for transferring the printing paper 20;
a swing gear (470) meshed with the feed gear (451) between the reel gear (331) and the feed gear (451);
The feed roller 450 is shaft-coupled to one side, and the swing gear 470 is shaft-coupled to the other side. a swing lever 490 for engaging 331 ; and
A rotation guide 491 provided in the swing lever 490 and supported in contact with the inner surface of the frame FR when it is rotated as it is formed to protrude toward the outside of the swing lever 490; Thermal transfer printing apparatus having a guide swing lever, characterized in that. According to claim 1,
The swing lever 490 is
a lever body (490a);
a first coupling portion (490b) formed at a lower portion of the lever body (490a) and to which the feed roller (450) is shaft-coupled; and
and a second coupling part (490c) formed at an eccentric front side from the upper part of the first coupling part (490b) of the lever body (490a) and to which the swing gear (470) is shaft-coupled; A thermal transfer printing device having a guide swing lever. 3. The method of claim 2,
The rotation guide 491 is,
Thermal transfer printing apparatus having a guide swing lever, characterized in that it is provided at an eccentric position from the upper portion of the second coupling portion (490c) to the front side. 4. The method of claim 3,
In the rotation guide 491,
A thermal transfer printing apparatus having a guide swing lever, characterized in that a plurality of fine protrusions having a round surface are protruded from a support surface in contact with the frame (FR). 4. The method of claim 3,
It is provided under the first coupling part 490b, and is installed in the locking part formed in the frame FR, so that one end or the other end is caught by the locking part according to the swing operation of the swing lever 490 and a swing angle is set. Thermal transfer printing apparatus having a guide swing lever, characterized in that it further comprises a stopper (492) for limiting within the range. According to claim 1,
It is provided on the swing lever 490, and as it is formed to protrude toward the inside of the swing lever 490, it further includes an auxiliary guide 493 supported in contact with the parts constituting the engine 400 when it is rotated. Thermal transfer printing apparatus having a guide swing lever, characterized in that. 7. The method of claim 6,
a platen roller 440 installed to be spaced apart from the rear side of the feed roller 450 and elevating the ink ribbon 10 and the printing paper 20 so as to contact the thermal transfer head (TPH); and
It is disposed on the inside of the swing lever 490, the platen roller 440 is shaft-coupled to one side, and a link member 480 to which the feed roller 450 is shaft-coupled to the other side; further comprising,
The auxiliary guide (493) is a thermal transfer printing apparatus having a guide swing lever, characterized in that it protrudes inwardly so as to be supported in contact with the outer surface of the link member (480).

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