KR100976723B1 - CONTAINING DEVICE for PRINTING PAPER - Google Patents

Abstract

The present invention relates to a printing paper storage device in which printing paper for printing (photo paper) is wound and stored in a roll form.

In the embodiment of the present invention, the paper case 20 in which the printing paper 22 is rolled up and accommodated in a roll form, the paper case 20 is accommodated, restrains the paper case 20 stored therein, and the printing paper 22 at the time of printing. In the printing paper storage device including a cartridge (10) for supporting the drive of the paper case 20 so that the paper case 20 is supplied, the paper case 20 has a semi-cylindrical shape corresponding to each other so that the wound printing paper 22 is accommodated A first cover 102 and a second cover 104 formed of: The hook 106 and the hook engaging jaw 108 are formed on the first cover 102 and the second cover 104 to correspond to each other, respectively, to couple and separate the first cover 102 and the second cover 104. ; It is formed on the paper case 20 in a horizontal direction and is formed on one side of the paper case 20 so as to be driven by the power of the paper opening 21 and the slip and power transmission device 130 through which the printing paper 22 is discharged. And a support shaft 129 provided on the other side of the paper case 20 so that rotation is supported by the cartridge 10, and the rear accommodating part 12 is an outer surface of the paper case 20. It is formed in a semi-cylindrical shape to correspond to the cartridge opening 16 formed in the horizontal direction in the lower portion so that the printing paper 22 wound on the paper case 20 is discharged, and one end of the paper case 20 is accommodated A through hole 150 formed at one side of the rear accommodating part 12 to be rotated, and a support shaft receiving groove 153 formed at the other side of the rear accommodating part 12 so that the other end of the paper case 20 is accommodated and rotated. It includes.

Printer, printing paper, paper roll, roll, mobile, digital camera

Description

Printing paper storage device {CONTAINING DEVICE for PRINTING PAPER}

1 is a perspective view of a printer according to the present invention.

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

Figure 3 is a view showing the form of printing paper according to the present invention.

4A and 4B are perspective views of the paper case shown in FIG.

5A and 5B are perspective views showing an embodiment of a slip and power transmission device for driving the paper case shown in FIGS. 4A and 4B.

FIG. 5C is a side view of the slip and power train of FIG. 5A; FIG.

Fig. 6 is a view showing the lower side of the rear housing of the cartridge in which the paper case is installed;

7 is a view for explaining a phenomenon that the paper roll is unfolded and rewound in the paper case assembly process.

Figures 8a and 8b is a view for explaining the process of unwinding and winding the paper roll in the state that the cartridge is installed in the printer.

9 is a view for explaining the brake operation of the brake protrusion of the paper case and the locking jaw of the cartridge.

10 is a view showing the electrical configuration of the printer shown in FIG. 1 and FIG.

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

<Description of the symbols for the main parts of the drawings>

2: printer housing, 4: recording paper outlet, 6: printer frame

10: cartridge, 16: cartridge opening, 20: paper case

21: paper opening, 22: printing paper, 24: ribbon feed reel

26: ink ribbon, 28: ribbon winding reel, 30: rib

32: rib opening, 34: crown, 36: idling gear

38: head receiving groove, 40: heat sink, 42: heat sink,

50: capstan, 52: pinch roller, 58: platen

70: discharge roller, 72: discharge driven roller

The present invention relates to a printing paper storage device in which printing paper for printing is wound and stored in a roll form.

Generally, a thermal transfer printer refers to a printer in which a dye on a thermal transfer ribbon is transferred to a recording medium to be fixed by applying heat to a thermal transfer ribbon coated with a dye.

Such thermal transfer printers are classified into a sublimation type thermal transfer method in which dyes are transferred by sublimation, and a melt type thermal transfer method in which dyes are transferred by melting a thermal recording head according to a thermal transfer method of a dye. It is mainly used in printers for printing photographed images.

In addition, digital cameras have become more comparable to film as the resolution of imaging devices such as charge-coupled devices (CCD) and CMOS image sensors has increased dramatically, and thus, the prevalence of digital cameras for taking pictures by such imaging devices This rapidly expanding situation has digital cameras in almost every home.

In this case, a high resolution color printer capable of printing a photograph taken by a digital camera has been proposed. In this case, the conventional high-resolution color printer for photo printing typically adopts a thermal transfer method that realizes full color by printing three colors of ink on a paper in a plane-sequential manner. Such thermal transfer printers use pre-cut print media. Printing paper cassettes are required because of the use, and since the printing paper cassettes protrude out of the printer, a large installation area is required.

The present invention has been made in accordance with the above needs, the printing paper is rolled up in the form of a roll to reduce the installation space of the printing paper, to prevent the unwinding of the printing paper during the movement, the printing paper is supplied accurately at the time of printing To provide a printing paper storage device that can be.

An embodiment of the present invention for achieving the above technical problem is that the paper case 20, the paper case 20 is accommodated in the printing paper 22 is rolled and accommodated in a roll form and restrains the received paper case 20 In the printing paper storage device including a cartridge 10 for supporting the driving of the paper case 20 so that the printing paper 22 is supplied at the time of printing, the paper case 20 is accommodated by the wound printing paper 22. A first cover 102 and a second cover 104 formed to have a semi-cylindrical shape corresponding to each other; The hook 106 and the hook engaging jaw 108 are formed on the first cover 102 and the second cover 104 to correspond to each other, respectively, to couple and separate the first cover 102 and the second cover 104. ; It is formed on the paper case 20 in a horizontal direction and is formed on one side of the paper case 20 so as to be driven by the power of the paper opening 21 and the slip and power transmission device 130 through which the printing paper 22 is discharged. And a support shaft 129 provided on the other side of the paper case 20 so that rotation is supported by the cartridge 10, and the rear accommodating part 12 is an outer surface of the paper case 20. It is formed in a semi-cylindrical shape to correspond to the cartridge opening 16 formed in the horizontal direction in the lower portion so that the printing paper 22 wound on the paper case 20 is discharged, and one end of the paper case 20 is accommodated A through hole 150 formed at one side of the rear accommodating part 12 to be rotated, and a support shaft receiving groove 153 formed at the other side of the rear accommodating part 12 so that the other end of the paper case 20 is accommodated and rotated. It includes.

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

1 shows an example of a printer employing the present invention. The printer to which the present invention is applied is a sublimation type thermal transfer printer, and a recording paper discharge port 4 for discharging the portion of the printing paper on which printing is completed is formed on the front of the printer housing 2. One side plate 6 of the housing can be opened and closed by pivoting around a hinge (not shown) at the bottom to perform a work such as cartridge replacement.

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'.

According to an embodiment of the present invention, the cartridge 10 is configured to accommodate the printing paper and the ink ribbon as one body, and has a rear accommodating portion 12 having an outer circumferential surface of a substantially cylindrical shape, and the rear accommodating portion 12. It includes a front receiving portion 14 continued from the front toward. The area where the rear housing portion 12 and the front housing portion 14 meet at the bottom of the cartridge 10 is recessed upwardly 18 to accommodate the capstan 50 and / or pinch roller 52 of the printer. It is indented and formed from this lower side. On the bottom of the rear accommodating part 12, a printing paper cartridge opening 16 for penetrating the printing paper 22 is elongated in the horizontal direction.

Inside the rear housing 12, a paper case 20 in which printing paper 22 is wound therein is rotatably installed. On the outer circumferential surface of the paper case 20, a paper opening 21 is formed in the left and right directions so that the printing paper 22 can be drawn out through the pipe. In the present invention, the printing paper for printing is wound in the form of a roll in the paper case 20, and in particular, is in close contact with the inner circumferential surface of the paper case and is wound inward from the inner circumferential surface.

3 shows the form of the printing paper 22 wound inside the paper case 20. The printing paper 22 is made of a thick material suitable for storing photographs as well as printing photographs, and the upper surface, that is, the printing surface is polished. Particularly, in the present invention, the printing paper 22 has a perforation 22a formed or cut in a transverse direction at a predetermined length, ie, every photograph length, from the front end thereof. After that, the user can easily cut the sheet simply by bending and folding the microhole pattern portion. In the following description and the utility model registration claims, the micropore patterns or sheaths formed in this way for easy cutting of the printing paper will be referred to as partial cutting processing portions. On the other hand, in one embodiment, the back of the printing paper 22 may be marked with a mark indicating the leading end of the paper on the portion or the portion immediately after the cut portion.

Referring again to FIG. 2, an unused ink ribbon 26 is wound inside the front housing portion 14, and a ribbon supply reel 24 for releasing and supplying the ink ribbon 26 during the printing process is rotatably installed. Above the 18, a ribbon winding reel 28 which winds and collects the used ink ribbon 26 is rotatably provided. Between the ribbon supply reel 24 and the ribbon winding reel 28, ribs 30 for structurally supporting the cartridge 10 are formed in the form of a partition wall extending from side to side, and an ink ribbon at the bottom of the ribs 30 A rib opening 32 for passing the 26 is provided. The ribs 30 are preferably integrally formed with the ribs 30 to the cartridge frame at the upper end of the rear surface of the rib opening 32 so as to unfold the link ribbon 26 from side to side.

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 heat dissipation fan 42 of the printer is provided. A partition 44 is formed in front of and above the head receiving groove 38 to thermally isolate the ribbon supply reel 24 from the thermal recording head 56 and the heat sink 40, and the heat sink 40 and the partition wall 44. The space between) acts as a vent. A partition opening 46 is provided at the bottom of the partition 44 to allow the ink ribbon 26 to pass therethrough. As a result, the ink ribbon 26 wound around the ribbon supply reel 24 has a partition opening 46 at the bottom of the partition 44, a lower side of the head receiving groove 38, and a rib opening 32 at the bottom of the rib 30. After passing through it is wound on the ribbon winding reel (28) via the idling gear (36).

On the other hand, in the printer, the lower side of the groove 18 on the bottom of the cartridge 10 is rotated by a power source (not shown) to apply frictional force to the back side of the printing paper 22 so that the printing paper 22 can be conveyed without sliding. Capstan 50 is installed to allow. The pinch roller 52 is supported by a spring, not shown, and is installed to be in contact with the capstan 50 in the lateral direction. In front of the capstan 50 and the pinch roller 52, a cutter assembly 54 for cutting a portion of the printing paper (hereinafter referred to as 'recording paper') where printing is completed is installed.

Inside the head receiving groove 38 of the cartridge 10, the thermal recording head 56 is disposed in the left and right direction and 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. Below the thermal recording head 56, a platen 58 is provided to press the printing paper 22 and the ink ribbon 26 onto the thermal recording head 56 to promote heat transfer and transfer.

A discharge roller 70 and a discharge driven roller 72 are connected to each other between the platen 58 and the recording paper discharge port 4. On the outer circumferential surface of the discharge roller 70, a plurality of guide protrusions are formed to flatten the printing paper and prevent slippage of the printing paper. In order to prevent the printing paper from creasing inside the printer during the discharge of the printing paper, the discharge roller 70 rotates at a slightly higher speed (for example, at 1.1 times the speed) than the capstan 50, and thus printing It is desirable to have a slip device that causes slip to occur when a tensile force of a certain size or more is applied to prevent excessive tensile force on the paper. 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.

4A and 4B show an embodiment of the paper case 20 shown in FIG.

In the present embodiment, the paper case 20 has a cylindrical shape in an assembled state, and includes a first cover 102 and a second cover 104 formed by being cut along a plane including a rotation center axis. A plurality of hooks 106 are formed on both sides of one of the first cover 102 and the second cover 104, and the hook engaging jaw 108 is formed on the other side of the first cover 102 in correspondence with the hooks 106. It is. Accordingly, after the paper roll is inserted into the first cover 102 or the second cover 104, the hooks 106 are fitted to the hook hooking jaw 108 corresponding to the first cover 102. 102 and the second cover 104 are combined. In order to facilitate insertion and fastening of the paper roll, grooves 102a and 104a are preferably formed at the front edge portions of the first cover 102 or the second cover 104, respectively.

The paper case 20 is installed inside the printer housing 2 and may be driven by a power transmission device having a slip function (hereinafter, referred to as a 'slip and power transmission device'). For driving, one side of the paper case 20 has a drive shaft accommodating portion 110 for accommodating the clutch of the slip and power transmission device (148 of FIG. 5A) in the form of a cylindrical sleeve, drive shaft accommodating portion 110 One or more drive shaft blades 112 are formed on the inner circumferential surface thereof. On the other hand, a support shaft 129 which is installed in the cartridge 10 and freely rotatable is provided on the side opposite to the drive shaft accommodating portion 110 in the paper case 20.

On the other hand, a plurality of first locking projections 114 are formed to protrude laterally along the outer circumferential surface of the drive shaft accommodating part 110 on the side surface on which the drive shaft accommodating part 110 is formed in the paper case 20. In addition, a plurality of second locking protrusions 116 protrude in the circumferential direction at one edge of the outer circumferential surface of the paper case 20. In addition, one side of the paper case 20 is formed to protrude in a blade shape, for example, a brake protrusion 120 having a rectangular plate shape. On the other hand, one side of the paper case 20 is formed with at least one elastic support plate 122, the side panel is cut in the form of 'dimple' and its end is semi-cylindrically convex in the case, the paper case (20) The edges of the roll of paper being rolled up inside are aligned.

5A-5C show one embodiment of a slip and power train. In the illustrated embodiment, the slip and power transmission device 130 has a rotating shaft 131, the upper and lower sides except the center portion of the rotating shaft 131, the outer peripheral surface of the D-shaped cut parallel to the axis D -Cut is formed.

In the upper D-cut portion, a first disk 132, a first slip pad 134, a power transmission gear 136, a second slip pad 138, and a second disk 140 are sequentially installed from above. . The first disk 132 is provided with a sleeve 133 upwards, and the second compression spring 142 is inserted into the sleeve 133 and then fixed by the second stopper 143. In the center of the first disk 132 and the second disk 140, an insertion hole having the same shape as the cross section of the rotating shaft 131 having the D-cut is formed, so that the first disk 132 and the second disk 140 ) Rotates the same as the rotating shaft 131. On the other hand, in the center of the power transmission gear 136, the first slip pad 134 and the second slip pad 138 is formed an insertion hole having an inner diameter slightly larger than the diameter of the rotation shaft 131, the external force is applied If not, it is possible to rotate freely outside the rotary shaft (131).

The first stopper 144, the first compression spring 146, and the clutch 148 are inserted into the lower D-cut portion of the rotation shaft 131 sequentially from below. One or more clutch blades 149 are formed on the outer circumferential surface of the clutch 148 to correspond to the drive shaft blades 112 of the drive shaft accommodating part 110.

Each drive shaft blade 112 formed in the drive shaft accommodating portion 110 of the paper case 20 and the clutch blades 149 formed on the outer circumferential surface of the clutch 148 have a larger gap between the blades than the thickness, so that the clutch The clutch blade 149 formed on the outer circumferential surface of 148 is preferably applied to the drive shaft blade 112 of the drive shaft accommodating portion 110 so that the backlash is imparted in rotation. In a preferred embodiment, the drive shaft blades 112 formed on the inner circumferential surface of the drive shaft accommodating portion 110 and the clutch blades 149 formed on the outer circumferential surface of the clutch 148 are two or three, respectively. The angle is close to about 120 ° or about 180 °. The operation of the backlash in the printer operation will be described later.

The slip and power transmission device 130 as described above acts as follows. In the upper D-cut portion of the rotary shaft 131, the first disk 132 and the second disk 140 have the same shape as the outer peripheral surface of the rotary shaft 131 having the D-cut and the rotational shaft ( Make the same rotary motion as 131). On the other hand, the power transmission gear 136 may be rotated by a motor (not shown) in the state fitted to the rotary shaft 131. On the other hand, the clutch 148 performs the same rotational movement as the rotation shaft 131. With the slip and power transmission device 130 assembled therein, the first disk 132, the first slip pad 134, the power transmission gear 136, the second slip pad 138, and the second disk. 140 is compressed by the restoring force of the second compression spring 142. Therefore, when rotational force is applied from the motor (not shown) to the power transmission gear 136, if the rotational resistance is not large, the power transmission gear 136 is compressed in the first slip pad 134 and the second slip pad. The first disk 132 and the second disk 140 are rotated by the media 138, respectively, and the rotational force of the first disk 132 and the second disk 140 is transmitted to the clutch 148 through the rotation shaft 131. ), The clutch 148 is able to rotate the paper case (20). On the other hand, due to the operation of the printer capstan 50, as described later, when the rotation direction or rotation speed of the rotation shaft 131 and the power transmission gear 136 is different, the first slip pad 134 and the second slip pad ( 138) On both sides, the compression force of the second compression spring 142 is overcome and slip is generated so that the rotational force of the power transmission gear 136 is transmitted to the first disk 132, the second disk 140, and the rotating shaft 131 intact. Will not be.

6 shows the inside of the lower side of the rear housing 12 of the cartridge 10 in which the paper case 20 is installed. On the side of the cartridge 10, a third locking protrusion 152 is formed to protrude inward from a lower side of the through hole 150 for installing the drive shaft accommodating part 110 of the paper case 20. The four locking projections 154 are integrally formed with the elastic piece 156 and provided. On the other hand, on the bottom of the cartridge 10, a brake engaging jaw 158, for example, having a rectangular plate shape is formed to protrude upward in the form of a blade.

This paper case 20 is assembled as follows. First, the paper roll is inserted into the second cover 104, and then the paper tip is drawn out of the paper opening 21. In this state, when the pressure for releasing the roll of the paper roll is released, the paper roll is unfolded inside the second cover 104 due to the physical property of the stiff printing paper due to its thick thickness. As described above, the second cover 104 comes into close contact with the inner circumferential surface thereof and is wound inward from the inner circumferential surface of the second cover 104 with a larger diameter than before. In such a state, when the first cover 102 is covered and the hooks 106 are fitted to the hook stoppers 108, the assembly of the paper case 20 is completed.

When the assembled paper case 20 is installed in the cartridge 10, two adjacent protrusions of the plurality of first locking protrusions 114 formed along the outer circumferential surface of the drive shaft accommodating part 110 of the paper case 20 are provided. The third locking protrusion 152 of the inner circumferential surface of the cartridge 10 is pinched therebetween, and between two adjacent protrusions of the plurality of second locking protrusions 116 formed at one edge of the outer circumferential surface of the paper case 20. The fourth locking protrusion 154 of the inner peripheral surface of the cartridge 10 is pinched. Accordingly, the paper case 20 is rotated within the cartridge 10 by vibrations generated during the carriage or other handling, thereby preventing the paper roll tip from entering the paper case 20 or coming out excessively. It is also possible to prevent the paper roll tip from being pushed or pulled out arbitrarily.

On the other hand, when the cartridge 10 as described above is installed inside the printer, the clutch 148 of the slip and power transmission device 130 installed inside the printer housing 2 is the drive shaft receiving portion 110 of the paper case 20. ), The paper roll connecting portion 138 of the paper case 20 is pushed while being supported by the spring 136, and thus the first locking protrusion 114 of the paper case 20 and the cartridge 10 are pushed. The lock between the third locking protrusions 152 is released. To this end, the support shaft 129 provided on the side opposite to the drive shaft receiving portion 110 in the paper case 20 is preferably spring-supported on the inner peripheral surface of the cartridge 10 or the printer housing (2). In addition, during the installation process, a protrusion (not shown) installed inside the side of the printer housing pushes the fourth locking protrusion 154 of the cartridge 10 outward, that is, in a direction away from the center of the paper case. The lock between the second locking protrusion 116 of the paper case 20 and the fourth locking protrusion 154 of the cartridge 10 is released. Therefore, in the state in which the cartridge 10 is installed inside the printer, the paper case 20 can rotate according to the rotation of the motor regardless of the first to fourth locking protrusions 114, 116, 152, and 154.

In the preferred embodiment of the printer shown in Figs. 1 and 2, the printing paper 22 is pulled out to the thermal recording head 56 side in preparation for printing and the paper case 20 in the process of printing for one color. ) To the side. The capstan 50 and the clutch 148 are driven by the same motor. Here, each time a new printing is performed, the transfer of the printing paper 22 is slipped and the power transmission device 130 until the printing paper 22 is snapped between the capstan 50 and the pinch roller 52 in the printing start step. Although, the conveyance of the printing paper 22 is controlled by the capstan 50 afterwards. To this end, as described above, the slip and power transmission device 130 is provided with slip devices 132 to 143, and the drive shaft blades 112 formed on the inner circumferential surface of the drive shaft accommodating part 110 of the paper case 20. And a backlash between the clutch blades 149 formed on the outer circumferential surface of the clutch 148 and the clutch 148 rotates the paper case 20 than the speed at which the capstan 50 rotates the paper case 20. By setting it large, after the printing paper 22 is bitten between the capstan 50 and the pinch roller 52 in the printing start step, the clutch 148 is no-load operation, that is, without applying rotational force to the paper case 20. The clutch blade 149 formed on the outer circumferential surface of the clutch 148 is allowed to idle between the drive shaft blades 112 formed on the inner circumferential surface of the drive shaft receiving portion 110 of the paper case 20.

The specific rotation speed ratio of the capstan 50 and the clutch 148 for this purpose is the backlash angle given between the drive shaft blade 112 formed on the inner circumferential surface of the coaxial receiving portion 110 and the clutch blade 149 formed on the outer circumferential surface of the clutch 148. It is decided according to. The following table exemplarily shows a ratio relationship between the rotation speed of the paper case 20 by the capstan 50 and the rotation speed of the paper case 20 by the clutch 148.

Backlash angle By capstan
Paper Case Rotation Speed By clutch
Paper Case Rotation Speed Speedboat 180 ㅀ 360 ㅀ / standard time 540 ㅀ / standard time 1: 1.50 120 ㅀ 360 ㅀ / standard time 480 ㅀ / standard time 1: 1.33 90 ㅀ 360 ㅀ / standard time 450 ㅀ / standard time 1: 1.25 60 ㅀ 360 ㅀ / standard time 420 ㅀ / reference time 1: 1.17 30 ㅀ 360 ㅀ / standard time 390 ㅀ / reference time 1: 1.08

That is, for example, when the backlash angle is 120 DEG, the speed at which the clutch 148 attempts to rotate the paper case 20 is set to be 1.33 times higher than the speed at which the capstan 50 tries to rotate the paper case 20. It is preferable.

The printing process of the printer will be described in detail with reference to FIGS. 8A and 8B centering on the process of unwinding and winding the paper roll.

When the cartridge 10 is mounted in the printer and just before the start of a new printing, the paper roll is in a state where the tip is exposed out of a portion of the paper case 20 (step (1) in Fig. 8A). In this state, when the print button is pressed, the paper case 20 is rotated by the rotational power transmitted from the clutch 148 of the slip and power transmission device 130 to the drive shaft accommodating portion 110 of the paper case 20. In the figure is rotated counterclockwise, so that the portion of the printing paper 22 exposed to the outside of the paper case 20 is transported along the inner wall of the cartridge 10, the front end portion of the printing paper cartridge opening of the cartridge 10 It is conveyed toward the capstan 50 via 16 (step (2) of FIG. 8A). When the transfer of the printing paper 22 continues, the printing paper leading end reaches the capstan 50 and is pinched between the capstan 50 and the pinch roller 52, and immediately afterwards, the brake protrusion 120 of the paper case 20. ) Is caught by the brake engaging jaw 158 of the cartridge 10 (step (3) of Figure 8a).

From this time, the conveyance of the printing paper 22 is controlled by the capstan 50 and the pinch roller 52. That is, since the brake protrusion 120 of the paper case 20 cannot be caught and rotated by the brake engaging jaw 158 of the cartridge 10, the rotary shaft 131 and the clutch 148 in the slip and power transmission device 130. ) Cannot rotate, and the first slip pad 134 and the second slip pad 138 are disposed between the power transmission gear 136 and the first disk 132 and the second disk 140 due to the rotational resistance. Slip occurs between them. Then, in the state where the paper case 20 is stopped, the paper roll is rotated while being slid from the inner circumferential surface of the paper case 20 to be pulled out by the capstan 50 and the pinch roller 52 (step (4) of FIG. 8A). ). This printing paper conveyance is continued until the printing paper leading end passes by the printing length from the thermal recording head 56 (step (5) in Fig. 8B).

Printing by the thermal recording head 56 is started at the position where the printing paper 22 has reached step (5) of FIG. 8B. From this time, the capstan 50 and the pinch roller 52 rotate in the reverse direction, whereby the printing paper 22 is conveyed toward the paper case 20. Here, due to the stiffness of the printing paper 22, the printing paper 22 pushed by the capstan 50 rotates the paper case 20 counterclockwise in the drawing (step (6) of FIG. 8B). . At this time, the clutch 148 of the slip and power transmission device 130 also rotates, but the paper case 20 itself is rotating and the clutch 148 is rotating faster than the capstan 50 and the paper case 20. Since the backlash is provided between the drive shaft blade 112 formed on the inner circumferential surface of the drive shaft accommodating portion 110 and the clutch blade 149 formed on the outer circumferential surface of the clutch 148, the clutch blade 149 of the clutch 148 is a sheet of paper. The load shaft rotates without contacting the drive shaft blades 112 of the case 20. The capstan 50 can rotate the paper case 20 while transferring the printing paper 22 with the minimum load. Printing paper transfer and printing are continued until the printing paper leading end reaches the thermal recording head 56 (step (7) of Fig. 8B).

When the printing paper 22 reaches the position of the step (7) of Fig. 8B, when the capstan 50 and the pinch roller 52 are rotated in order to print the next color, the printing paper 22 reaches the step (5) of Fig. 8B again. The printing paper is conveyed until the clutch blade 149 of the clutch 148 is rotated without load without contacting the drive shaft blade 112 of the paper case 20, the capstan 50 to the printing paper 22 As it is pulled out, the paper case 20 rotates counterclockwise, and within the cartridge 10, the printing paper 22 is transported along the inner wall of the cartridge 10, and its front end reaches the position of step (5) of FIG. 8B. Until the transfer continues.

The printing of the next color by the thermal recording head 56 is started at the position where the printing paper 22 reaches the step (5) of FIG. 8B, and the steps (5) to ((b) of FIG. 8B until the printing of all the colors are completed. The printing paper transfer process of step 7) is repeated. When printing of all colors is completed, the capstan 50, the discharge roller 70, and the discharge driven roller 72 rotate to discharge the printing paper front end through the recording paper discharge port 4. When the user folds away the printed portion of the printing paper, the paper case 20 is rotated by the capstan 50, and the paper case 20 returns to step (1) of FIG. 7A.

Meanwhile, in the process of transferring the printing paper 22, the brake protrusion 120 of the paper case 20 is caught by the brake latching jaw 158 of the cartridge 10 as in step (3) of FIG. Due to excessive rotation of the case 20, it is possible to prevent a problem in the printing paper 22 in the paper opening 21. That is, if the brake protrusion 120 is not present, the paper case 20 is rotated more than that shown in step (3) of FIG. 7A to reach a state as shown in FIG. 9A, and thus the printing paper 22 ) May be sharply refracted at the paper opening 21 of the paper case 20, and may be difficult to discharge. However, in the case of providing the brake protrusion 120 as in the present embodiment, as shown in FIG. 9B, the printing paper side shape becomes smooth and can be smoothly transferred. In addition, this type of brake facilitates printing even when printing panoramas or other wide photographs (the length of the print paper length direction).

FIG. 10 shows the electrical configuration of the printer shown in FIGS. 1 and 2. Here, the printer is directly connected to, for example, a mobile device such as a digital camera or a portable telephone to receive print data and perform printing. The mobile device interface unit 200 is a connection port for connecting a mobile device. In one embodiment, the mobile device interface 200 is connected to the mobile device via a USB cable. The controller 202 controls the overall operation of the printer. In particular, the control unit 202 requests to transmit the picture list or the picture data to the mobile device through the mobile device interface unit 200 in response to the manipulation of the keypad 204 of the user, and displays the received picture list or the picture data ( 206). To this end, the printer according to the preferred embodiment receives a picture data from the mobile device, and a program capable of displaying the corresponding picture on the display 206 is loaded and executed.

When the user applies a print command through the keypad 204, the control unit 202 controls the thermal recording head 56 and the motor drive unit 208 to cause the printing operation to proceed. That is, the controller 202 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 202 is a paper case 20, ribbon supply reel 24, ribbon winding reel 28, capstan 50, platen 58, discharge roller 70 through the motor drive unit 208 To control the rotation. The memory 210 stores a program for the operation of the controller 202 and stores and buffers print data received from the mobile device.

On the other hand, the paper sensor 212 detects the mark of the partially cut processing site on the back of the printing paper 22 and provides the detection signal to the control unit 202 so that the control unit 202 can correctly recognize the position of the leading edge of the printing paper. To help. The ribbon sensor 214 detects the tip of each color in the ink ribbon.

Such a printer operates as follows.

As mentioned above, the printer of the present invention waits in a state where the tip of the printing paper 22 is transferred from the thermal recording head 56 to the position that is past the print length, that is, to the position shown in Fig. 11A. In this state, after the user operates the keypad 204 to display the list of pictures stored in the mobile device on the display 206, the printing is started when one of the pictures is selected and a print command is issued.

First, as shown in Fig. 11B, the platen 58 is raised to press the appropriate pressure on the thermal recording head 56 with the ink ribbon 26 and the printing paper 22 therebetween. The printing paper 22 is conveyed backward by being caught between the capstan 50 which rotates counterclockwise and the pinch roller 52 which rotates clockwise correspondingly. Due to the stiffness of the printing paper 22, the printing paper 22 pushed by the capstan 50 rotates the paper case 20 counterclockwise in the drawing, and the printing paper 22 in the cartridge 10. ) Is pressed against the outer circumferential surface of the paper case 20 and wound. On the other hand, the ribbon winding reel 28 is rotated counterclockwise to allow the ink ribbon 26 to proceed at the same speed as the printing paper, the platen 58 also rotates counterclockwise to print paper ( 22 and the ink ribbon 26 to proceed at a constant speed. In this state, the yellow (Y) color dye on the ink ribbon 26 is transferred to the printing 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. After the printing job is settled.

As shown in Fig. 11C, when the printing paper tip 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 capstan 50 and the pinch roller 52 Rotation is stopped, and the platen 58 is lowered as shown in Fig. 11D. At this time, the ribbon reel 28 may be detected by a ribbon sensor (not shown) such that the tip portion of the magenta (M) color of the ink ribbon reaches a printing point between the thermal recording head 56 and the platen 58. Can be rotated additionally.

Then, the rotation direction of the capstan 50 and the pinch roller 52 is changed again to print the magenta (M) color so that the paper case 20 rotates counterclockwise and the printing paper 22 is moved forward again. do. Here, the clutch blade 149 of the clutch 148 is rotated without load without contacting the drive shaft blade 112 of the paper case 20, the paper case 20 is the capstan 50 to the printing paper 22 It is rotated counterclockwise by the pulling force. When the leading edge of the printing paper 22 is conveyed toward the capstan 50 of the cartridge 10 and returned to the state shown in FIG. 11A, the platen 58 is raised as shown in FIG. 11B to raise the ink ribbon 26 and The thermosensitive recording head 56 is heated by pressing the thermosensitive recording head 56 at an appropriate pressure with the printing paper 22 therebetween, while the capstan 50, the paper case 20, and the ribbon winding reel 28 rotate. The magenta (M) color is printed.

When the printing of the magenta (M) color is finished, the rotation of the capstan 50 and the pinch roller 52 is stopped, and the platen 58 is lowered as shown in Fig. 11D. Then, the rotation direction of the capstan 50 and the pinch roller 52 is changed again to print the cyan color, so that the paper case 20 rotates counterclockwise, and the printing paper 22 moves forward again. Transferred. Here, the clutch blade 149 of the clutch 148 is rotated without load without contacting the drive shaft blade 112 of the paper case 20, the paper case 20 is the capstan 50 to the printing paper 22 It is rotated counterclockwise by the pulling force. When the leading edge of the printing paper 22 is conveyed toward the capstan 50 of the cartridge 10 and returned to the state shown in FIG. 11A, the platen 58 is raised as shown in FIG. 11B to raise the ink ribbon 26 and The thermosensitive recording head 56 is heated by pressing the thermosensitive recording head 56 at an appropriate pressure with the printing paper 22 therebetween, while the capstan 50, the paper case 20, and the ribbon winding reel 28 rotate. Thus, printing of cyan color is performed. When the ink ribbon is provided with an overcoating (OC) dye layer for preventing black (B) or print layer deterioration, the dye layer is printed in the same manner as above.

When the printing for all the dye layers is finished, the rotation of the capstan 50 and the pinch roller 52 and the paper case 20 is stopped and the platen 58 is lowered as shown in Fig. 11E. Thereafter, the paper case 20 is rotated counterclockwise by the capstan 50, and the printing paper is conveyed forward. When printing paper transfer is continued and the leading edge reaches the discharge roller 70 and the discharge driven roller 72, the printing paper is transferred by the discharge roller 70 and the discharge driven roller 72, and the leading edge is externally discharged through the recording paper discharge port 4. Is discharged. In this state, the printer notifies the end of printing through a beep sound or a guide voice. Accordingly, the user can fold and detach the printed portion of the print sheet. After a predetermined time has elapsed after the end of printing, the paper case 20 is rotated by the capstan 50, and the paper case 20 returns to the state of FIG. 11A.

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 printer is directly connected to, for example, a mobile device such as a digital camera or a portable telephone to receive print data and perform printing, but in the modified embodiment, the printer is connected to an information device such as a PC to receive print data. It may be.

On the other hand, in the above description, the paper sensor 212 is described as detecting the leading end of the printing paper roll, but in another embodiment of the present invention, the paper sensor 212 is immediately before the recording paper discharge port 4 or the discharge roller 70 and It may be installed near the discharge driven roller 72 to perform a function of detecting whether the recording sheet is completely discharged. It goes without saying that a plurality of paper sensors may be provided to detect both the leading end portion of the printing paper roll and the printed printing paper portion, that is, the end portion of the recording paper.

On the other hand, although the printing paper and the ribbon supply reel and ribbon winding reel has been described centering on a printer installed in one cartridge, the present invention is not limited thereto, and the ribbon supply reel and ribbon winding reel are manufactured as separate cartridges and used for printing. But it can also be applied if it is provided in the cartridge.

Furthermore, instead of installing in the form of a cartridge having a separate independent housing, the paper case 20 may be installed directly in the printer. In such a case, among the members described as being formed in the cartridge in the above description, for example, the third locking protrusion 152, the fourth locking protrusion 154, the brake engaging jaw 158, and the like may be used as the paper case ( 20) may be provided at the site for receiving.

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 seen from above, the embodiment according to the present invention, the printing paper is wound in the form of a roll, less space for installation of the printing paper, to prevent the unwinding of the printing paper during the movement, the printing paper is supplied correctly when printing Can be. Accordingly, the printer to which the present invention is applied has the effect that the volume as well as the weight is significantly reduced than the existing printer.

In addition, the present invention can generate a slip when the rotational force of the capstan for transferring the printing paper and the rotational force of the driving motor for rotating the paper case containing the printing paper to prevent the breakage of the printing paper to accurately supply the printing paper. There is an advantage to that.

Claims (6)

A paper case 20 in which the printing paper 22 is wound and accommodated in a roll form; The paper case 20 is accommodated, the print including a cartridge (10) to support the drive of the paper case 20 so as to restrain the paper case 20 accommodated and the printing paper 22 is supplied at the time of printing In the paper storage device, The paper case 20 A first cover 102 and a second cover 104 formed in semi-cylindrical shapes corresponding to each other to accommodate the wound printing paper 22; Hooks 106 and hook catching jaws formed on the first cover 102 and the second cover 104 to correspond to each other, respectively, to couple and separate the first cover 102 and the second cover 104 ( 108); A paper opening 21 formed in the paper case 20 in a horizontal direction to discharge the printing paper 22; A power connector provided on one side of the paper case 20 to be driven by a slip and a power transmission device 130; It includes a support shaft 129 provided on the other side of the paper case 20 so that rotation is supported in the cartridge 10, The rear compartment 12 A cartridge opening 16 formed in a semi-cylindrical shape so as to correspond to an outer surface of the paper case 20, and formed to extend horizontally in a lower portion so that the printing paper 22 wound on the paper case 20 is discharged; A through hole 150 formed at one side of the rear accommodating part 12 so that one end of the paper case 20 is accommodated and rotated; And a support shaft receiving groove (153) formed at the other side of the rear housing part (12) so that the other end of the paper case (20) is accommodated and rotated. The method of claim 1, The power connection portion A drive shaft receiving part 110 formed in a cylindrical sleeve shape on one side of the paper case 20 so that one end of the slip and power transmission device 130 is inserted; Printing paper storage device including a plurality of drive shaft blades 112 are formed at a predetermined interval inside the drive shaft receiving portion 110 so that one end of the slip and power transmission device (130). The method of claim 1, Constraining the rotation of the paper case 20 during the handling of the cartridge 10, further comprising a rotational restraining portion is released by the slip and power transmission device 130, The rotation restraint part A plurality of first locking protrusions 114 spaced apart from each other at a predetermined interval on the outer side of the power connection part and formed to protrude laterally; Printing paper storage device including a third locking projection (152) formed in the lower portion of the through hole 150 so as to correspond to the first locking projection (114). The method of claim 1, Further comprising an auxiliary restraining portion for restraining the rotation of the paper case 20 during handling of the cartridge 10, the restraint is released by the projection formed on the inside of the printer housing (2), The auxiliary restraint unit An elastic piece 156 which is formed by cutting from one side of the rear accommodating part 12 to a lower part and is spread outward from the inner side of the rear accommodating part 12 by the protrusion part; A fourth locking protrusion 154 formed on the elastic piece 156; Printed paper storage device comprising a plurality of second locking projections 116 spaced apart at regular intervals on the outer edge of the paper case 20 so as to correspond to the fourth locking projections 154 and protruded radially. The method of claim 1, Further comprising a slip generating unit for generating a slip of the slip and the power transmission device 130 so that the printing paper 22 is drawn out, The slip generation unit A brake engaging jaw 158 formed under the through hole 150; Printing paper storage device including a brake protrusion (120) formed in a rectangular plate shape on one side of the paper case 20 to be caught by the locking step (158). The method of claim 1, Printing paper storage device further comprises an elastic support plate 122 is formed convex inward from one side of the paper case 20 to align the edge of the wound printing paper (22).

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