KR20070054009A - Roll paper cartridge and printer employing the same - Google Patents

Abstract

A printer using a paper cartridge for smoothing the unwinding and rewinding of the transfer paper in a printer using a transfer paper wound in a roll, and a printer employing the same. The printer paper cartridge of the present invention has an outer case having a first opening formed through the inner and outer parts and connected in the left and right directions, and a second installed in the outer case so as to be rotatable and extending in the left and right through the inner and outer parts. A cylindrical inner case having an opening, and a paper roll in close contact with the inner circumferential surface of the inner case, wound inwardly from the inner circumferential surface, and having a distal end exposed through the second opening. In a preferred embodiment, between the first opening and the second opening in the outer case, the paper leading portion exposed to the power through the second opening from the printer in a state mounted inside the printer to the outside of the first opening The conveying means for making it is provided further. It is possible to prevent the transfer paper from being removed from the bobbin, preventing the transfer of the transfer paper, reducing the number of parts, reducing the cost, and reducing the amount of curl.

Printer, Recording Paper Roll, Paper Roll, Paper Roll, Roll

Description

Roll paper cartridge and printer employing the same}

1 is a perspective view of one embodiment of a printer according to the present invention;

2 is a cross-sectional view of the printer shown in FIG.

3 is a perspective view of one embodiment of the transfer paper roll case shown in FIG.

Figure 4 is a view for explaining the phenomenon that the transfer paper roll is unfolded and rewound in the transfer paper roll case assembly process of FIG.

Figure 5a is an exploded perspective view of another embodiment of the transfer paper roll case shown in FIG.

Figure 5b is a cross-sectional view of the transfer paper roll case of Figure 5a.

6 shows the cutter assembly shown in FIG. 2.

7 is a cross-sectional view taken along the line A-A of the cutter assembly shown in FIG.

8A and 8B are views for explaining the protrusion bar operation when cutting the recording paper in the cutter assembly shown in FIG.

Figures 9a and 9b is a view for explaining the operation of the protrusion bar during the platen lifting up and down in the cutter assembly shown in FIG.

10 is a block diagram showing the electrical configuration of the printer shown in FIGS. 1 and 2;

11A to 11F are views for explaining the operation of the printer shown in Figs.

<Description of Symbols for Major Parts of Drawings>

2: housing, 4: cover, 5: hinge, 6: printer frame 10: ribbon cartridge

16: opening part, 20: transfer paper roll case, 20a: opening part, 20b: rotating shaft,

20c: first cover, 20d: second cover, 20e: locking jaw, 20f: hook

21a: sub pinch, 21b: counter pinch

22: transfer paper, 24: supply reel, 26: ink ribbon, 28: winding reel

30: rib, 32: opening part, 34: crown piece, 36: idling gear

38: head receiving groove, 40: heat sink, 42: heat sink fins, 58: platen

70: discharge roller carrier, 72: discharge roller, 74: driven driven roller, 76: lever

78: recording paper outlet

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer apparatus, and more particularly, to a printer apparatus for printing onto a recording paper wound in a roll form.

As is well known, a thermal transfer printer refers to a printer in which a dye on a thermal transfer ribbon is transferred to and fixed on a recording medium by applying heat to a thermal transfer ribbon to which a dye is applied. Such thermal transfer printers are divided into sublimation type thermal transfer methods in which dyes are transferred by sublimation according to the thermal transfer method of dyes, and melt type thermal transfer methods in which dye is transferred by melting the thermal recording heads. The company method is mainly used in the card printer for issuance of ID card, etc. that can identify the employee's identity in the company, and the melt-type thermal transfer method is widely used in a barcode printer for printing a bar code containing product information.

Such a thermal transfer printer advances the ink ribbon and the transfer paper while pressing the ink ribbon and the transfer paper to the thermal recording head by a platen, and locally heats the thermal recording head to transfer the ink on the ink ribbon to the transfer paper. Print as possible. In the case of a color printer, after printing with ink of one color, transfer the transfer paper in the opposite direction, and then print with ink of another color, and in this manner, three colors of ink on the transfer paper are plane-sequential. Full color is realized by printing with.

On the other hand, there has been proposed a printer using a transfer paper wound in a roll form so that the transfer paper cassette is unnecessary, thereby reducing the size and installation area of the printer itself and reducing the time required for feeding. For example, Patent Application No. 0520578 (Invention name: Thermal transfer printer having a thermal transfer ribbon and a recording medium-integrated cartridge) registration publication and Patent Application No. 10-2005-0077076 (Invention name: Roll type recording medium is used) The printer describes a printer in which a transfer paper roll on which a transfer paper is wound, a supply reel on which an unused ink ribbon is wound, and a take-up reel on which an used ink ribbon is wound are all inserted into one cartridge. The printer described in the above patents and patent applications performs printing by transferring a plurality of color dyes applied to an ink ribbon in a plane sequential manner while repeating the unwinding and winding of the transfer paper wound on the transfer paper roll, and recovering the used ink ribbon to be wound up. On the other hand, the printed sheet of paper is cut by the cutter and then discharged through the outlet.

By the way, in a printer using a transfer paper wound in the form of a roll, the tendency of the transfer paper wound on the bobbin to unfold inside the cartridge or the case tends to be strong due to the physical property of the transfer paper being thick and stiff. Accordingly, the transfer paper wound on the bobbin may be brought into close contact with the cartridge or the inner circumferential surface of the case by unwinding from the bobbin. Such a phenomenon may be applied to the transfer paper such as during transfer of the transfer paper onto the transfer paper roll in the printing process. It can happen in a moment when the tension weakens. If this happens, if you want to rewind the transfer paper to the transfer paper roll during the printing process, the transfer paper roll does not rotate normally and acts as a large impedance to the rewinding of the transfer paper in order to further unfold it in close contact with the inner peripheral surface of the cartridge or the case. This causes a problem in that the transfer sheet rewinds, which makes it difficult to proceed with normal printing.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a technical problem is to provide a paper cartridge for smoothing the unwinding and rewinding of the transfer paper in a printer using a transfer paper wound in a roll. .

In addition, another object of the present invention is to provide a printer employing such a paper cartridge.

The printer paper cartridge for achieving the above technical problem is an outer case having a first opening formed through the inner and outer parts and connected in the left and right directions, and is rotatably installed inside the outer case and opened in the left and right direction through the inner and outer parts. A cylindrical inner case having a second opening formed thereon, and a paper roll in close contact with the inner circumferential surface of the inner case, wound inward from the inner circumferential surface, and having a distal end exposed through the second opening.

In a preferred embodiment, between the first opening and the second opening in the outer case, the paper leading portion exposed to the power through the second opening from the printer in a state mounted inside the printer to the outside of the first opening The conveying means for making it is provided further.

On the other hand, the printer of the present invention for achieving the above another technical problem is a paper cartridge having a paper wound in the form of a roll, a capstan for transferring the paper by applying a friction force to the surface of the paper, and printing on the paper And a platen for selectively adhering the paper to the recording head. Here, the paper cartridge has an outer case having a first opening formed through the inner and outer parts and connected in the left and right directions, and a second opening formed to be rotatable inside the outer case and connected through the inner and outer parts in the left and right direction. And a paper roll having a cylindrical inner case provided in close contact with the inner circumferential surface of the inner case, wound inwardly from the inner circumferential surface, and having a distal end exposed through the second opening.

In a preferred embodiment, the paper cartridge is installed between the first opening portion and the second opening portion in the outer case, and the paper front end portion exposed through the second opening portion while being mounted inside the printer through the first opening portion. It is further provided with a conveying means for conveying. In this case, the printer is preferably provided with power generation and transmission means for driving the transfer means.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 shows an embodiment of a printer according to the present invention. The printer according to the present embodiment is a sublimation type thermal transfer printer, which has a housing (2) having a substantially cylindrical shape, a printer frame (6) installed and fixed inside the frame (2), and detachable within the frame (6). It is provided with a cartridge 10 that is installed. In a preferred embodiment, the upper surface of the frame 2 is made in the form of a lid so that it can be separated from the lower frame when the cartridge 10 is replaced. In addition, it is preferable that a part of the lid 4 is rotated about the hinge 5 so as to be opened and closed, so that the recording sheet 99 on which printing is completed can be taken out. On the other hand, it is preferable that a liquid crystal display (not shown in FIG. 1) and a keypad (not shown in FIG. 1) for displaying the printer state are provided on the outer peripheral surface of the printer. In addition, it is preferable to form a locking step (not shown) on one side of the outer peripheral surface of the printer to prevent the printer from falling off from the installation surface when the printer falls down.

2 is a cross-sectional view of the printer shown in FIG. Hereinafter, for convenience of description, the right side of FIG. 2 is referred to as 'front' and the left side is referred to as 'back'.

The cartridge 10 is a frame for storing the transfer paper and the ink ribbon. The cartridge 10 includes a rear accommodating portion 12 having an outer circumferential surface having a substantially cylindrical shape, and a front accommodating portion extending from the upper and lower portions of the rear accommodating portion 12 toward the front. (14). The portion where the rear receiving portion 12 and the front receiving portion 14 meet at the bottom of the cartridge 10 may accommodate the capstan 50 and / or the pinch roller 52 and the cutter assembly 56 of the printer as described below. Indented upwards 18 is formed so as to extend in the horizontal direction. Transfer paper openings 16 for penetrating the transfer paper 22 in the groove 18 direction are formed at the bottom of the rear housing part 12.

Inside the rear accommodating portion 12, a transfer paper roll case 20 in which the transfer paper 22 is wound therein is rotatably installed. An opening 20a is formed on the outer circumferential surface of the transfer paper roll case 20 so that the transfer paper 22 penetrates and is drawn out. In front of the transfer paper roll case 20, the sub pinch 21a and the counter pinch 21b for guiding the transfer paper 22 drawn out from the transfer paper roll case 20 between the capstan 50 and the pinch roller 52 are left and right directions. It is installed to connect with.

An unused ink ribbon 26 is wound inside the front accommodating portion 14, and a supply reel 24 for releasing and supplying the ink ribbon 26 during the printing process is rotatably installed, and used above the groove 18. A winding reel 28 which winds and collects the ink ribbon 26 is rotatably installed. Between the supply reel 24 and the take-up reel 28, ribs 30 for structurally supporting the cartridge 10 are formed in the form of partition walls connected to the left and right, and an ink ribbon 26 at the lower end of the ribs 30. The opening 32 for passing () is provided. It is preferable that a crown-shaped metal piece 34 is attached to the top of the rear surface of the rib 32 to open the link ribbon 26 from side to side to prevent wrinkles.

On the other hand, in the front of the rib 30, a head receiving groove 38 for accommodating the thermal recording head 56 of the printer penetrates in the left and right direction at the bottom of the cartridge 10. As shown in FIG. Above the head receiving groove 38, a heat dissipation plate 40 for dissipating heat generated from the thermal recording head 56 to the external heat dissipation fins 42 is provided. A partition 44 is formed in front of the head receiving groove 38 to thermally isolate the supply reel 24 from the thermal recording head 56 and the heat sink 40, and an ink ribbon 26 is formed at the bottom of the partition 44. An opening 46 for passing the passage is provided. Accordingly, the ink ribbon 26 wound around the supply reel 24 passes through the opening 46, the lower side of the head receiving groove 38, and the opening 32, and then winds up the reel 28 via the idling gear 36. Coiled on A capstan 50 is installed below the groove 18 on the bottom of the cartridge 10 to apply a frictional force to the back of the transfer paper 22 by rotating by a power source (not shown) so that the transfer paper 22 can be transported without sliding. do. The pinch roller 52 is supported by a spring, not shown, and is installed to be in contact with the capstan 50 in the horizontal direction. In front of the capstan 50 and the pinch roller 52, a cutter assembly 54 for cutting the transfer paper portion (hereinafter, referred to as 'recording paper') on which printing is completed is installed.

On the other hand, the thermal recording head 56 is disposed in the left and right direction inside the head receiving groove 38 of the cartridge 10, and one end of the thermal recording head 56 is fixed to the printer frame 6. In the thermal recording head 56, fine heat generating elements are arranged in a line, and each heat generating element can individually generate heat in response to a signal from the printer control unit. Under the thermal recording head 56, the platen 58 for crimping the transfer paper 22 and the ink ribbon 26 to the thermal recording head to promote heat transfer and transfer is seated by the platen support 60. It is installed, the platen support 60 is raised and lowered by the cutter assembly 54 as will be described later in the state that the front can be rotated about the hinge 62.

A discharge roller carrier 70 is installed between the platen 58 and the recording paper discharge port 78 in which the discharge roller 72 and the discharge driven roller 74 are connected to each other and installed therein. The lever 76 can be rotated. The discharge roller carrier 70 maintains the state shown in FIG. 2 in the non-printing state, and when the transfer paper is to be taken out in the printing process, the transfer paper drawn by rotating by the lever 76 in the clockwise direction in the drawing is pulled out. The portion is capable of moving the tip along the inner circumferential surface of the cylindrical housing. A plurality of guide protrusions are formed on the outer circumferential surface of the discharge roller 72 to flatten the transfer paper and prevent slipping of the transfer paper. In order to prevent the transfer paper from creasing inside the printer in the process of ejecting the transfer paper, the discharge roller 72 rotates at a slightly faster speed (for example, at 1.1 times the speed) than the capstan 50, so that the transfer paper is excessive. It is desirable to have a slip device that causes slip to occur when a tensile force of a certain magnitude or more is applied to prevent a tensile force from being applied. Such a slip device itself can be easily implemented by those skilled in the art using, for example, felt and spring, so a detailed description thereof will be omitted.

The transfer paper roll case 20 has a cylindrical shape in an assembled state, and a rotation shaft 20b is provided on the left and right sides so as to rotate in both directions in a state installed inside the cartridge 10.

3 shows an embodiment of the transfer paper roll case 20 shown in FIG. In the present embodiment, the transfer paper roll case 20 includes a first cover 20c and a second cover 20d formed by cutting in the left and right directions, and the first and second covers 20c and 20d are hinged. Are combined. In a preferred embodiment, the pivot shaft 20b is provided at both end surfaces of the first and second covers 20c and 20d. However, in another embodiment, the rotation shaft 20b may be provided on the left and right surfaces of the first cover 20c. Engagement jaws 20e are formed on both sides of one of the first and second covers 20c and 20d, and hooks 20f are formed on the other sides. On the other hand, an opening 20a is formed in one or both of the first and second covers 20c and 20d so that the transfer paper 22 can be penetrated out.

Such transfer paper roll case 20 is assembled as follows. First, the transfer paper roll is inserted into the first cover 20c, and the leading end of the transfer paper is taken out of the opening 20a to be fixed by the worker by hand or by a work tool. In this state, when the pressure for releasing the transfer paper roll is released, the transfer paper roll is unfolded inside the first cover 20c due to the physical property of the stiff transfer paper due to its thick thickness, as shown in FIG. 4. The first cover 20c is brought into close contact with the inner circumferential surface and is wound inward from the inner circumferential surface of the first cover 20c with a larger diameter than before. In this state, the assembly is completed by covering the second cover 20d and fastening the hook 20f to the locking jaw 20e.

5A and 5B show another embodiment of the transfer paper roll case 20. In the present embodiment, the transfer paper roll case 20 includes a first cover 20g and a second cover 20h formed by cutting in the front-rear direction, and each side surface of each of the first and second covers 20g and 20h. The rotating shaft 20i is installed in the. In this embodiment, looking at the assembly process of the transfer paper roll case 20, first insert the transfer paper roll in the first cover (20g) as in the embodiment of Figure 3, the transfer paper front end portion outside the opening 20a Withdrawal and fixed by hand or by work tool. In this state, when the press for maintaining the wound state of the transfer paper roll is released, the transfer paper roll is unfolded inside the first cover 20c due to the physical property of the stiff transfer paper due to its thick thickness, and the inner circumferential surface of the first cover 20g. It is brought into close contact with the sheet, and is wound inward from the inner circumferential surface of the first cover 20g with a larger diameter than before. In this state, the assembly is completed by fitting the second cover 20h and fastening the hook 20i to the locking jaw 20j.

6 and 7 specifically illustrate the cutter assembly 54 shown in FIG. 2.

The cutter support part 100 which mechanically supports the cutter assembly 54 has an opening 102 penetrating in the front and rear direction to the left and right, and the width of the opening 102 is forward to smoothly insert the transfer paper. The narrower it becomes. The front surface of the cutter support part 100 is formed with a recess 104 for accommodating the upper cutting blade 110 and the lower cutting blade 120. The upper surface of the recess 104 is formed with a groove 106 for accommodating the upper end of the upper cutting blade 110, the left and right ends of the groove 106 is an opening that communicates with the front surface of the cutter support (100) ( 108 is formed so that the clip 130 can be fastened.

The upper cutting blade 110 includes a horizontal portion 112 that extends in the left and right direction, and vertical portions 114 and 116 that extend downward from both ends of the horizontal portion 112. The lower end of the horizontal part 112 partially covers the opening 102 of the cutter support part 100, and the lower end of the rear part of the horizontal part 112 is chamfered at an angle to operate as a blade.

The lower cutting blade 120 includes a horizontal portion 122 that extends in the left and right direction, and a vertical portion 124 that extends downward near the center of the horizontal portion 122. The front lower end of the horizontal portion 122 is chamfered at an angle to operate as a blade. In particular, the width of the horizontal portion 122 is formed to become wider as it proceeds from one end to the other end, it is preferable that the cutting proceeds in the transverse direction from any one during cutting of the transfer paper. The vertical portion 124 of the lower cutting blade 120 has a through hole 126 penetrating back and forth. In a preferred embodiment, the through hole 126 has a shape in which the second through part 126b is continuous in the left direction (refer to FIG. 6) from the lower end of the first through part 126a in the form of a right semicircle.

A motor (not shown) is installed below the cutter support part 100, and the motor is connected to the cam 140 installed on the rear surface of the lower cutting blade 120. The protruding rod 142 is integrally formed on the front surface of the cam 140 to correspond to the through hole 126 of the lower cutting blade 120. When the cam 130 rotates as the motor rotates, the protruding rod 142 formed on the cam 140 moves up and down the lower cutting blade 120 while being fitted into the through hole 126 of the lower cutting blade 120. You can raise and lower with.

On the other hand, in the preferred embodiment, the cam 140 of the cutter assembly 54 performs the function of raising and lowering the platen support 60 and the platen 58 as well as the lower cutting blade 120. To this end, a through hole 61 having a similar shape to the through hole 126 of the lower cutting blade 120 is formed on the rear surface of the platen support 60. The through hole 61 has a form in which the fourth through portion 61b is extended in the right direction (see FIG. 6) from the lower end of the left semicircular third through portion 61a.

The cutter assembly 54 as described above is assembled as follows. First, the upper cutting edge 110 is positioned in front of the recess 104 of the cutter support 100, and then the upper cutting edge 54 is fitted to the recess 106 of the cutter support 100, thereby cutting the upper cutting edge 110. The back surface of the blade 110 is brought into close contact with the entire surface of the recess 104 of the cutter support part 100. Then, after the protrusion bar 142 penetrates the through hole 126 of the lower cutting 120, the lower cutting 120 is in close contact with the front surface of the cutter support 100 and the upper cutting blade 110. After the assembly, the assembly is completed by fitting the clips 130 at both ends.

In the above embodiment, the cutter assembly 54 operates as follows.

First, the transfer paper cutting operation will be described with reference to FIGS. 8A and 8B. In the steady state (t = T0), the protruding rod 142 of the cam 140 is located at a point where the semicircle portion and the straight portion of the through hole 126 of the lower cutting blade 120 meet, and at this time, the cam 140 The protruding rod 142 is also located at a point where the semicircle portion and the straight portion meet with respect to the platen support 60 and the through hole 61. In this state, when the cam 140 rotates clockwise in the drawing, the force is applied to the upper inner wall of the lower cutting blade 120 and the through hole 126 while sliding in the straight portion of the lower cutting blade 120 and the through hole 126. It is added to thereby raise the lower cutting blade 120 upward (t = T1, T2). Accordingly, the blades of the upper cutting blade 110 and the lower cutting blade 120 meet and cross each other to cut the transfer paper 22. When the cutting is completed, the cam 140 is rotated counterclockwise again to return to the original position, whereby the lower cutting blade 120 returns to the original position. In this cutting process, the protruding rod 142 of the cam 140 does not affect the movement of the platen support 60 while sliding in the semicircular portion of the platen support 60 through-hole 61.

Next, the raising and lowering operation of the platen support 60 will be described with reference to FIGS. 9A and 9B. As above, in the normal state (t = T0), the protruding rod 142 of the cam 140 is located at the point where the semicircle portion and the straight portion of the through hole 126 of the lower cutting blade 120 meet, and at this time, the cam ( The protrusion bar 142 of the 140 is also located at the point where the semi-circle portion and the straight portion meet with respect to the platen support 60 through hole 61. In this state, when the cam 140 rotates counterclockwise in the drawing, the cam 140 slides inside the straight portion of the through hole 61 of the platen support 60 and is positioned on the upper inner wall of the through hole 61 of the platen support 60. The force is applied, thereby lifting the platen support 60 upward (t = T3, T4). At this time, the platen support 60 is rotated about the hinge 62 on the opposite side to be in close contact with the thermal transfer head 56 to press the transfer paper 22 and the ink ribbon 26 to the thermal transfer head 56 The dye applied to the ink ribbon 26 is transferred to the transfer paper 22. When the ink ribbon dye transfer to the transfer paper is completed, the cam 140 rotates clockwise again to return to the original position, and the platen support 60 returns to the original position. In the cutting process as described above, the protruding rod 142 of the cam 140 does not affect the movement of the lower cutting blade 120 while sliding in the semicircular portion of the lower cutting blade 120 and the through hole 126.

Thus, in the preferred embodiment of the present invention, only one motor and the cam can implement both the transfer paper cutting and platen lifting operation.

FIG. 10 shows the electrical configuration of the printer shown in FIGS. 1 and 2. The printer is connected to an information apparatus such as a PC, for example, to receive print data and to print. The printer controller 150 is connected to the external information device through the interface unit 152, stores print data received from the external information device in the memory 154, and controls the overall operation of the printer to perform printing. The memory 154 stores firmware for the operation of the controller 150 and buffers the print data received from the external information device. In such a printer, the control unit 150 controls the heat generation of the thermal recording head 56 by applying a thermal control signal to the thermal recording head 56 in accordance with the print data. In addition, the control unit 150 is the transfer paper roll 20, the ribbon winding reel 28, the capstan 50, the platen 58, the discharge roller 72, and the cutter assembly driving motor through the motor drive unit 156 ( Control the rotation of the (not shown). The transfer paper roll 20, the ribbon winding reel 28, the capstan 50, the platen 58, the discharge roller 72, and the cutter assembly driving motor include a motor installed in the right frame of the frame body, for example, a gear or a belt. Coupled to the same power transmission means are driven by a coupler, the power transmission means or the coupler itself can be easily implemented by those skilled in the art to which the present invention belongs, the detailed description thereof will be omitted. On the other hand, the controller 150 displays the printer status on the display 158, and accepts a user's operation command through the keypad 160.

Such a printer operates as follows.

In the initial installation, the printer is in a state as shown in FIG. 11A, where the transfer paper is wound between the sub-pinch 21a and the counter pinch 21b while the transfer paper is wound inside the transfer paper roll case 20. . Since the initial position of the front end of the transfer paper is determined at the time of assembling the cartridge 10, the state immediately after replacing the cartridge 10 while the printer is in use is also shown in Fig. 11A.

In this state, when the print button is pressed, the sub pinch 21a and the counter pinch 21b are rotated by the action of a motor and a gear (not shown) provided inside the side of the printer housing, whereby the transfer paper 22 ) The tip is drawn out through the opening 20a of the transfer paper roll case 20, and is drawn out through the transfer paper opening 16 provided on the bottom surface of the cartridge 10 by the subsequent rotation of the sub pinch 21a and the counter pinch 21b. It is inserted between the capstan 50 and the pinch roller 52. By the clockwise rotation of the capstan 50 and thus the rotation of the pinch roller 52, the transfer paper tip passes through the cutter assembly 54 and reaches above the platen 58. Subsequent rotation of the transfer paper roll 16, the capstan 50 and the pinch roller 52 causes the transfer paper tip to pass through the discharge roller 72 and the discharge driven roller 74 to reach the state shown in FIG. 11B. The state is just before starting the transcription.

Thereafter, as shown in FIG. 11C, the protruding rod 142 of the cam 140 in the cutter assembly 54 lifts the platen support 60 upwards, whereby the platen support 60 is reversed. The platen 58 is raised by rotating about the hinge 62 in the center, and is pressed against the thermal recording head 56 at an appropriate pressure with the ink ribbon 26 and the transfer paper 22 interposed therebetween. The transfer paper 22 is conveyed backward by being caught between the capstan 50 and the pinch roller 52 which rotate counterclockwise. At this time, the transfer paper roll case 20 installed so as to be able to rotate freely about the rotation shaft 20b is rotated clockwise in the drawing while being pushed backward by the thick and stiff transfer paper, and the transfer paper roll case 20 And back through the space between the cartridge housing. On the other hand, the take-up roller 28 rotates counterclockwise to allow the ink ribbon 26 to proceed at the same speed as the transfer paper, and the platen 58 also rotates counterclockwise to cause the transfer paper 22 to rotate by friction. The ink ribbon 26 is made to proceed at a constant speed. In this state, the yellow (Y) color dye on the ink ribbon 26 is transferred to the transfer paper by subliming or melting the ink ribbon 26 by applying heat to the thermal recording head 56 in contact with the ink ribbon 99. The settling printing begins.

As shown in Fig. 11D, when the end of the transfer paper reaches the printing point between the thermal recording head 56 and the platen 58 and the printing of the yellow (Y) color is finished, the rotation speed of the capstan 50 is detected. As shown in FIG. 11E, the rotation of the capstan 50 and the pinch roller 52 is stopped by the controller 150, and the cam 140 in the cutter assembly 54 rotates to protrude the rod 142 and the platen. The turn support 60 is returned to its original position, whereby the platen support 60 is rotated about the hinge 62 on the opposite side and the platen 58 is lowered. At this time, when the winding roller 28 detects by the ribbon sensor (not shown) that the tip portion of the magenta (M) color of the ink ribbon reaches the printing point between the thermal recording head 56 and the platen 58. Can be further rotated.

Then, by the rotation of the sub pinch 21a and the counter pinch 21b, the transfer paper roll case 20 rotates along the counterclockwise direction, and the capstan 50 rotates clockwise, so that the transfer paper 22 moves forward. The transfer paper tip is passed through the discharge roller 72 and the discharge driven roller 74 to return to the state shown in Fig. 11B. Subsequently, as shown in FIG. 11C, the platen 58 is raised by the action of the cam 140 in the cutter assembly 54 so as to sandwich the ink ribbon 26 and the transfer paper 22 therebetween. 56, and the capstan 50, the transfer paper roll 20 and the take-up roller 28 are rotated while the thermal recording head 56 is heated to generate magenta (M) colors.

When the printing of magenta (M) color is finished, as shown in FIG. 11E, the rotation of the sub pinch 21a and the counter pinch 21b and the capstan 50 and the pinch roller 52 is stopped, and the cutter assembly 54 is stopped. Cam 140 in) rotates to return the protruding rod 142 and the platen support 60 to the original position, and thus the platen support 60 is rotated about the hinge 62 on the opposite side to the platen (58) falls. Subsequently, the transfer paper roll case 20 is rotated counterclockwise by the rotation of the sub pinch 21a and the counter pinch 21b, and the capstan 50 is rotated clockwise so that the end of the transfer paper is discharge roller 72 and discharge. It passes through the driven roller 74 and returns to the state shown in FIG. 8B. Subsequently, as shown in FIG. 11C, the platen 58 is raised by the action of the cam 140 in the cutter assembly 54 so as to sandwich the ink ribbon 26 and the transfer paper 22 therebetween. 56, and the capstan 50, the transfer paper roll 20 and the take-up roller 28 are rotated while the thermal recording head 56 generates heat to print cyan color. In addition, when the ink ribbon is provided with a black (B) or an overcoating (ov) dye layer for preventing deterioration of the printing layer, the dye layer is printed in the same manner.

When printing of all the dye layers is finished, the rotation of the capstan 50 and the pinch roller 52 and the transfer paper roll 20 is stopped and the cam 140 of the cutter assembly 54 is stopped as shown in FIG. 11E. By action, the platen 58 descends. Thereafter, the transfer paper roll 20 rotates counterclockwise and the capstan 50 rotates clockwise to transfer the transfer paper. When the tip of the portion printed on the transfer paper reaches the cutter assembly 54, the cam 140 in the cutter assembly 54 rotates to apply a force to the upper inner wall of the lower cutting blade 120 through hole 126. Accordingly, the lower cutting blade 120 is lifted upward. Accordingly, the blades of the upper cutting blade 110 and the lower cutting blade 120 meet and cross each other to cut the transfer paper 22. When the cutting is completed, the cam 140 is rotated counterclockwise again to return to the original position, whereby the lower cutting blade 120 returns to the original position. Subsequently, while the discharge roller 72 and the discharge driven roller 74 rotate to transport the recording paper 22a, the lever 76 rotates to displace the discharge roller carrier 70 in the state shown in FIG. Accordingly, the recording paper 22a is discharged to the discharge port 78. When discharge of the recording sheet 22a is completed, the discharge roller carrier 70 is restored to its original state.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. For example, in the above description, the transfer paper, the ribbon supply reel, and the ribbon reel have been described with the center of the printer installed in one cartridge. The transfer can also be applied when this cartridge is provided. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, according to the present invention, in a printer using a transfer paper wound in a roll form, a problem that may occur due to unfolding of the transfer paper inside the transfer paper case due to the physical characteristics of the thick and stiff transfer paper, for example, By unwinding from the bobbin, it is possible to prevent the phenomenon of being in close contact with the cartridge or the inner circumferential surface of the case and hindering the transfer of the transfer paper, and to transfer the transfer paper to the capstan only with the weak rotational force of the suspension. In addition, the bobbin for winding the transfer paper, as well as the motor and gear for driving the transfer paper in the forward and reverse direction can be omitted, there is an effect of reducing the number of parts, cost reduction, control function for precisely driving the transfer paper in both directions This becomes unnecessary and there is an effect of increasing the reliability of the product.

In addition, since the transfer paper is not wound on the bobbin but is wound close to the inner circumference of the case, the diameter of the transfer paper roll is increased, thereby reducing the amount of paper curl, that is, the amount of paper curl generated during the maintenance of the wound state. . In addition, since the empty space between the cartridge and the transfer paper roll case may be about the thickness of the transfer paper, it can be made compact without increasing the overall size of the printer. On the other hand, since only a short end portion of the transfer paper in the transfer paper cartridge is exposed to the outside of the transfer paper roll case, there is an advantage that the installation or assembly is easy.

Claims (4)

A paper cartridge installed inside the printer An outer case having a first opening formed in a lateral direction through the inner and outer parts; A cylindrical inner case rotatably installed in the outer case and having a second opening formed in a lateral direction through the inner and outer parts; And A paper roll in close contact with an inner circumferential surface of the inner case and wound inwardly from the inner circumferential surface, and having a distal end exposed through the second opening; Paper cartridge having a. The method of claim 1, Is installed between the first opening and the second opening, the power is transferred from the printer in a state mounted inside the printer for transferring the paper leading end exposed through the second opening to the outside of the first opening Conveying means; Paper cartridge further comprising. A paper cartridge having paper rolled up in a roll form; A capstan for conveying the paper by applying a frictional force to the surface of the paper; A recording head for printing on the paper; And A platen for selectively adhering the paper to the recording head; And the paper cartridge is An outer case having a first opening formed in a lateral direction through the inner and outer parts; A cylindrical inner case rotatably installed in the outer case and having a second opening formed in a lateral direction through the inner and outer parts; And A paper roll in close contact with an inner circumferential surface of the inner case and wound inwardly from the inner circumferential surface, and having a distal end exposed through the second opening; A printer having a. 4. The method of claim 3, wherein the paper cartridge is The paper leading part installed between the first opening and the second opening in the outer case, and exposed through the second opening in a state of being mounted inside the printer, is transferred to the capstan through the first opening. Conveying means for; Further provided, And the printer further comprises power generation and transmission means for driving the transfer means.

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