KR19980015628A - Thermal transfer type color printer and thermal transfer film - Google Patents

Abstract

1. Technical field to which the invention described in the claims belongs

Thermal transfer type color printer and thermal transfer film

2. Technical Challenges to be Solved by the Invention

The problem is that the time required for copying is long and the supply and transport of the film and the paper are performed by driving a plurality of motors.

3. The point of the solution of the invention

The present invention relates to a thermoelectric conversion device which senses transfer of a thermal transfer film (60) by a photosensor (11) and melts and transfers ink adhered to the thermal transfer film (60) 10); A film supply / transfer unit 20 for supplying and transferring a thermal transfer film to a lower portion of the thermal transfer unit 10; A paper feeding / feeding unit feeding a print sheet between the thermal transfer unit 10 and the print roller to print a color and then returning to a rotary mode; A driving unit 40 for interlocking the film supply / conveyance unit 20 and the paper supply / conveyance unit 30 with one drive source; And a discharge unit (50) for discharging the discharged print paper to the outside and discharging the printed print paper of each color to the outside. The print paper (50) is sandwiched between the first color (61) 70) constitutes a space portion (65) in which ink is not adhered by a length required for transferring from the paper feed roller (34) to the copy paper (H).

4. Important Uses of the Invention

A thermal transfer type color printer and a thermal transfer film which can simplify the structure of the apparatus, reduce the manufacturing cost, reduce the size of the apparatus, and shorten the printing time of various colors

Description

Thermal transfer type color printer and thermal transfer film

In general, in a thermal transfer type color printer, a printing ink adhered on a thermal transfer film is melted due to the heat of a heating element (TPH: thermal printing head), and the melted ink is transferred to a printing paper, It is a device that prints in the same color as the manuscript.

This conventional color printer is a color printer in which the T.Pitch H 2 is brought into close contact with the upper portion of the printing roller 1 at a predetermined pressure and the T.P. Hitch 2 in close contact with the printing roller 1 H and the guide rollers 4 are provided on both sides of the lower portion of the paper pick-up 2 so that the thermal transfer film 3 is transferred between the paper pick-up 2 and the print roller 1. [ And 4A, respectively, and the paper feeding rollers 5 and 5A are provided on both sides of the printing roller 1. [ A driving motor (not shown) is connected to the printing roller 3, the guide roller 4, and the feeding roller 5 to drive the rollers, respectively.

In the operation of the conventional color printer having the above-described structure, when the cover of the printer is first opened, the T / P 2 is raised, and when the cover is closed after inserting the thermal transfer film 3 The sheet of paper 2 is lowered and brought into close contact with the upper portion of the printing roller 1 at a predetermined pressure and guided to guide rollers 4 and 4 which rotate by the driving of the film transfer motor And the printing paper 6 guided to the paper feeding rollers 4, 4A rotated by the driving of the paper conveying motor is conveyed. At this time, the heating element of the T.p. H 2 generates heat to melt the printing ink adhered on the thermal transfer film 3, and the melted ink is transferred to the printing paper 6 transporting the lower portion thereof to perform printing The printing process will be described in more detail as follows.

The three primary colors are sequentially adhered to the thermal transfer film 3, and these three primary colors are sequentially transferred to the printing paper. The print paper 6 guided through the paper feed rollers 5 and 5A separated from the print roller 1 and rotated by the paper feed motor is transported to the initial print position. The thermal transfer film 3 and the printing paper 6 are transferred after the T.Pitch H 2 is brought into close contact with the printing roller 1 at a predetermined pressure so that the thermal transfer film 3 and the printing paper 6 are transferred 1 color printing is performed.

When the printing of the first color is completed as described above, the T.Pitch H 2 is lifted and separated from the printing roller 1, and the motor for conveying the paper reversely rotates to rotate the printing paper 6 printed with the first color And returns to the initial printing position by feeding it to its original state. At this time, the thermal transfer film 3 is kept in a stopped state without being transported.

When printing of the first color is completed through this process and the printing paper 6 is returned to the initial printing position, the T.P.H 2 is brought into close contact with the printing roller 1, 6 is transferred to a position coinciding with the second color of the thermal transfer film 3 to complete the printing of the second color. Then, while repeating a series of steps of raising the paper 2 and restoring the printing paper 6, the third color, and the fourth, fifth, Color printing is performed.

Conventional color printers transfer printing paper between a T.P.H. and a printing roller together with a thermal transfer film to print a color, to return printing paper of one color to the initial printing position at the rear, and to print the next color There is a problem that copying is performed while repeating the above-described process.

A motor for bringing the thermal transfer film 3 into close contact with the printing roller 1 and a motor for transferring the thermal transfer film 3 to transfer the printing paper 6 in the forward and reverse directions And thus the structure is complicated, the manufacturing cost is increased, and the size of the device is increased.

1 is a schematic diagram of a conventional color printer

FIG. 2 is a block diagram of a color printer to which the present invention is applied

3 is a block diagram of the driving unit of the present invention

4 is a plan view of a thermal transfer film to which the present invention is applied

Fig. 5 is a schematic view showing the configuration of a main part

FIG. 6 is a schematic view showing the configuration of the main part showing the operation state of the sheet-

Description of the Related Art [0002]

10: thermal transfer part 11: photosensor

12: T.P.H 20: Film supply / transfer section

21: supply roller 22: winding roller

30: paper feed / transfer unit 31: print roller

32: Support roller 33: Feed belt

34: Feed roller 37: Guide plate

40: driving part 41: motor

42: drive gear 43, 44: driven gear

45: idle gear 50:

51: operating member 52: solenoid

53: Exhaust tray 60: Thermal transfer film

64: sensing line 65:

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a conventional color printer, and FIG. 2 is a configuration diagram of a color printer to which the present invention is applied.

The color printer to which the present invention is applied includes a thermal transfer unit 10 for sensing the transfer of the thermal transfer film, transferring the melted adhesive ink onto the printing paper, A film supply / transfer unit 20 for supplying and transferring a thermal transfer film to a lower portion of the thermal transfer unit 10; A paper feeding / feeding unit 30 for feeding a print sheet between the thermal transfer unit 10 and the print roller to print a color and returning the print sheet to a rotary mode; A drive unit 40 for interlocking the film supply / conveyance unit 20 and the paper supply / conveyance unit 30 with one drive source, and a paper discharge unit 50 for guiding and discharging the print paper, The following will be described in more detail.

When the cover of the printer is opened, the thermal transfer unit 10 is lifted at the same time. When the cover is closed after inserting the thermal transfer film 60, the thermal transfer unit 10 is lowered, (TPH) 12, which is in close contact with the pressure, and a photosensor 11 for sensing the sensing line of the thermal transfer film 60 and controlling the operation is provided on the lower side of the TPH . The film supply / conveyance unit 20 is provided with a supply roller 21 for winding a thermal transfer film 60 therearound in front of the T.Pitch H 12 and feeding the same, And a transfer roller 21 for transferring the thermal transfer film 20 supplied from the supply roller 21 to the thermal transfer section 10 at the rear end side of the supply roller 21 A guide roller 23 for guiding the thermal transfer film 60 having passed through the thermal transfer section 10 to the winding roller 22 is formed on the leading end side of the winding roller 22. [

The paper feeding / conveying unit 30 is provided with a printing roller 31 directly below the T / P 12 and a supporting roller 32 at the front opposite to the supporting roller 32. The supporting roller 32 And guide rollers 35 and 36 are formed directly under the print rollers 31 and under the print rollers 31. The guide roller 35 and the guide rollers 35 and 36 are installed in the lower portion of the print roller 31, A guide plate 37 for guiding the rotation of the printing paper 70 is formed on the outside of the printing roller 31 and the supporting roller 32 by interposing a rubber transfer belt 33 therebetween, And a paper feed tray 38 is formed in front of the paper feed roller 32 and the paper feed roller 34.

The driving unit 40 is configured to mount one motor 41 at a predetermined position between the winding roller 22 and the printing roller 31 as shown in Figure 3 and to drive the driving force of the motor 41 to the take- And a plurality of gears each having a predetermined gear ratio so as to be able to be simultaneously transmitted to the printing roller 22 and the printing roller 31. The driving gear 42 is provided on the motor 41, Driven gears 43 and 44 having predetermined gear ratios are provided in the driving roller 22 and the printing roller 31. A motor 41 is interposed between the driving gear 42 and the driven gears 43 and 44, And the idle gear 45 for transmitting the rotational force of the drive gear 42, which is shoveled in the drive gear 42, to the driven gears 43 and 44 at the same time.

The discharge unit 50 is configured such that the operation member 51 is rotated forward and backward around a predetermined position in the center of the chamber immediately after the printing roller 31 and the operation member 51 is moved forward The solenoid 51 is connected to block the conveying path of the sheet and the exhaust tray 53 is horizontally connected to the rear of the upper end of the operating member 51. [ The operation member 51 has a curved guide surface 51A formed at its upper end so as to block the guide path when the guide roller is separated from the chamber immediately behind the print roller 31, And constitutes a hinge 51B serving as a turning center of the member 51, and a spring 51C is elastically connected to the rear of the lower portion.

In the thermal transfer film 60 used in the color printer, the printing paper 70 is sandwiched between the sensing line 61 and the first color 61 by the paper rollers 34 12 by a length required for transferring the ink to the recording medium.

The operation of the present invention will now be described in detail.

When the cover of the printer is first opened, the T.P. H is raised, and when the cover is closed after inserting the thermal transfer film 60, the rising T.P. H (12) The driving force of the driving unit 40 motor 41 is transmitted to the winding roller 22 and the thermal transfer film 60 wound on the supply roller 21 is brought into contact with the upper portion of the transfer roller 31 at a predetermined pressure. To the H12 side. When the sensing line 61 of the transferred thermal transfer film 60 is sensed by the photosensor 11 through the above process, the transfer of the thermal transfer film 60 is stopped and the ends of the thermal transfer film 60 are aligned. When the printing paper 70 is inserted into the paper feed tray 38 and the start button is operated, the winding roller 22 and the printing roller 31 are rotated by the driving force of the driving unit 40, The space portion 65 of the thermal transfer film 60 is conveyed backward and the thermal transfer film 60 and the thermal transfer film 60 are aligned with each other, The first color 61 of the first color is matched. When the first colors 61 are thus matched, the printing ink adhered to the thermal transfer film 60 is melted by the heat of the heating element of the T.Pitch H 12, and the melted ink is ejected onto the printing paper 70 And the printing is started. The printing paper 70 to be printed as described above is rotationally transferred along the conveying belt 33 which is rotated by the driving of the printing roller 31 as shown in FIG. 5, The printing of the first color is completed when it passes through the roller 31 and the T.Pitch H. 12.

After the printing of the first color 61 is completed while being guided by the conveyance belt 33 as described above, when the leading end of the printing paper 70 reaches the pixel position of the paper P. hitch 12 again, The front end of the second color 62 of the four-film film 60 coincides with the front end of the first color 61 and is rotated and transferred simultaneously through the same process as the printing of the first color 61. The third color 63 or the fourth, fifth, The printing of the colors is continuously performed through the same process as the printing of the first and second colors.

The printing of the second color in the reverse order of the last color is completed and the rear end of the printing paper 70 is guided to the guide surface 51A of the operating member 51 of the paper discharge unit 50. [ The solenoid 52 operates to move the lower end of the actuating member 51 backward as shown in FIG. When the lower end moves backward, the upper end of the actuating member 51 is turned forward about the hinge 51B so that the upper portion of the guide surface 51A is pressed against the surface of the conveying belt 33 wound around the printing roller 31 So that the transfer path is shut off. The printing paper 70 that has been subjected to the last color printing and is conveyed along the conveyance belt 33 is guided on the upper surface of the operation member 51 and discharged to the discharge tray 53. [

The film feeding and feeding process and the sheet feeding and feeding process are performed simultaneously by the rotation of the winding roller 22 and the printing roller 31 in which a plurality of gears having a predetermined gear ratio are engaged with one motor 41 .

The present invention can transfer the thermal transfer film and the printing paper with a single motor and convey the printing paper in one direction, thereby simplifying the structure of the device, reducing the manufacturing cost, making it possible to miniaturize the device, The printing time can be shortened.

The present invention provides a thermal transfer type color printer and a thermal transfer film which can drive a thermal transfer film and a print sheet with a single motor and can shorten a printing time by transferring a print sheet in one direction.

Claims (6)

A thermal transfer section 10 for detecting the transfer of the thermal transfer film 60 by the photoelectric sensor 11 and for melting and transferring the ink adhered to the thermal transfer film 60 by the T.P. H ; A film supply / transfer unit 20 for supplying and transferring a thermal transfer film to a lower portion of the thermal transfer unit 10; A paper feeding / conveying unit 30 for feeding a printing paper 70 between the thermal transfer unit 10 and the printing roller so as to print a color and then to return to a rotary mode; A driving unit 40 for interlocking the film supply / conveyance unit 20 and the paper supply / conveyance unit 30 with one drive source; And a discharge unit (50) for discharging the printing paper (70) printed with each color by guiding the printing paper (70) outward. The space between the sensing line 61 and the first color 61 is limited by the length of time required for the printing paper 70 to be conveyed from the paper feed roller 34 to the T / 65. The thermal transfer film of the thermal printer color printer according to claim 1, The film supply / transfer unit (20) according to claim 1, A supply roller 21 for winding and feeding a thermal transfer film 60 is provided on the front side of the heat transfer sheet 12 with a space therebetween and a heat transfer film And a guide roller 23 for guiding the thermal transfer film 60 supplied from the supply roller 21 to the thermal transfer section 10 at the rear end side of the supply roller 21, Wherein a guide roller (24) for guiding the thermal transfer film (60) passed through the thermal transfer section (10) to the winding roller (22) is formed at the tip end side of the roller (22). The sheet feeding / feeding part (30) according to claim 1, A printing roller 31 is disposed directly under the paper 12 and a supporting roller 32 is disposed in front of the printing roller 31. A paper feeding roller 34 is disposed directly above the supporting roller 32, Guide rollers 35 and 36 are directly under the printing rollers 31 and the conveying belts 33 are connected to the printing rollers 31 and the supporting rollers 32, A guide plate 37 for guiding the rotation of the printing paper 70 is formed on the outer periphery thereof and a paper feed tray 38 is formed in front of the support roller 32 and the paper feeding roller 34. [ Color printer. The driving unit (40) according to claim 1, Driven gears 43 and 44 having predetermined gear ratios are provided in the winding roller 22 and the printing roller 31 respectively and the drive gear 42 and the driven gear 43 are rotatably supported by the motor 41. The drive gear 42, And an idle gear 45 for transmitting the rotational force of the drive gear 42 provided in the motor 41 to the driven gears 43 and 44 at the same time is provided between the driven gears 43 and 44 Thermal printer color printer. The discharge unit (50) according to claim 1, An actuating member 51 which rotates forward about the hinge 51B at the center of the chamber immediately behind the printing roller 31 to block the paper conveying passage is formed, and the actuating member 51 is provided at the lower end of the actuating member 51, Wherein the solenoid (52) constitutes a solenoid (52) for operating the front and rear sides of the operation member (51), and the discharge tray (53) is formed behind the upper end of the operation member (51).