JP4359956B2 - Printing head and card printer using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a print head and a card printer using the same. Specifically, by providing a guide body for guiding the print medium in the vicinity of the head portion of the print head, the print medium can be supported at two points, the head portion and the guide body, so that the front end side and the rear of the print medium are supported. It is designed to enable stable printing at the end.
[0002]
[Prior art]
2. Description of the Related Art Thermal transfer type printers, so-called card printers, that can print (print) a color image or the like on one side or both sides of a printing medium such as a card using a plastic material are known.
The outline of this card printer will be described with reference to FIG. 17. This card printer uses a ribbon cartridge 37 containing a roll-shaped ink ribbon 36, and uses transport rollers 28 and 29 on the upper surface of the platen roller 26. A rectangular card 2 is conveyed. Then, a head portion 33A (see the figure) of a thermal transfer printing head (thermal head) 33 is pressure-bonded to the platen roller 26 via the ink ribbon 36, and the card 2 is transported in this state to the printing head 33 in a predetermined manner. By giving the color image data, the color image is thermally transferred onto the surface of the card 2.
[0003]
As the card 2, for example, a card that satisfies the ISO (International Organization for Standardization) standard can be used. As shown in FIG. 18, the magnetic stripe 3 is formed along the longitudinal direction of the card 2. In addition, an IC memory (Integrated Circuit) 4 is embedded in the vicinity of the tip on the opposite side of the magnetic stripe 3.
Further, as the ink ribbon 36, a color ribbon using a sublimable dye can be used. FIG. 19 shows an example of the configuration. Each of the yellow Y, magenta M, cyan C, and black B dyes is applied over a predetermined length, and a lamination process can be performed after the black B dye band. Thus, the film-like sheet L is stuck. Then, color image printing and laminating processing are performed with Y, M, C, B, and L as one set.
[0004]
[Problems to be solved by the invention]
By the way, since the card 2 is conveyed while being sandwiched between the plurality of conveying rollers 27 to 30 as shown in FIG. 20, the card 2 travels while receiving different forces (crimping force) as follows.
(1) Force by the conveying rollers 27 and 28 and the platen roller 26 (example in FIG. 20)
(2) Force by transport roller 28 and platen roller 26 (3) Force by transport roller 28, platen roller 26, and transport roller 29 (example in FIG. 21)
(4) Force by the platen roller 26 and the transport roller 29 (5) Force by the platen roller 26 and the transport rollers 29 and 30 The platen roller 26 and the plurality of transport rollers 27 to 30 are not arranged on the same plane. In many cases, they are arranged with a slight difference in elevation as shown in FIG. In order to obtain a stable crimping force to the card 2 in addition to the variation in the mounting accuracy, a height difference as shown in FIG. 23 is provided.
[0005]
When there is a height difference as shown in FIG. 22, the card 2 is conveyed in a left-up state in the first half of the printing (see FIG. 23), is conveyed in the horizontal state in the middle board conveyance state (see FIG. 24), and in the second half. It is conveyed in a state of rising to the right (see FIG. 25). Therefore, the bending method of the card 2 differs depending on the transport position of the card 2, and the contact angle of the head portion (heat generating portion) 33A that contacts the card 2 is different. In combination with the change in the contact angle, there may be a case where the printing density unevenness or the ink ribbon 36 is wrinkled due to the change in the pressure-bonding force as described above. This phenomenon is particularly noticeable when printing at the leading end of the card 2 or when printing at the trailing end.
[0006]
If the platen roller 26 and the plurality of transport rollers 27 to 30 can be arranged on the same plane, the occurrence of such uneven printing density can be suppressed as compared with the conventional case. However, even if they are arranged on the same plane, FIG. 23 and FIG. In some cases, it is not parallel (perpendicular to the printing head 33). For this reason, it is inevitable that the contact angle between the print head 33 and the card 2 changes, or that the contact force of the print head 33 is uneven due to a change in the pressing force.
Therefore, the present invention solves such a conventional problem. In particular, by preventing the contact angle at the front and rear end portions of the card from changing, the contact unevenness of the print head is improved, and the front surface of the card is improved. The present invention proposes a print head capable of performing stable print processing and a card printer using the print head.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, in the printing head according to the first aspect of the present invention, in the vicinity of the belt-shaped heating element, the card-like printing medium conveyed on the platen roller by the conveyance roller is retracted in the conveyance direction. On the side, the card-like printing medium is supported at two points with the heating element, and the contact angle and the pressing force of the heating element with respect to the card-like printing medium are determined. in which the guide body uniform from tip to the rear end portion is provided.
In the card printer according to the invention described in claim 6, and the platen roller, by giving Do contact pressure through the ink ribbon to the card-shaped printing medium that will be conveyed onto the platen roller with al picture image information by the transport roller comprising a printing head for transferring an image to a card-shaped printing medium, the printing head in the vicinity of the protrusion heating element, the exit side of the conveying direction of the card-like printing medium conveyed, substantially as ridges heating element The card-shaped printing medium is supported at two points, the same height and the ridge heating element, and the contact angle and the crimping force of the ridge heating element with respect to the card-like printing medium are determined from the front end of the card-like printing medium being conveyed. the guide body is provided with a uniform to the rear end, the card-shaped printing medium conveyed on the platen roller, in which to perform the printing while supported at two points of impact Article heating element and the guide body .
[0008]
In the present invention, a card as a printing medium is conveyed while always in contact with the head portion of the printing head and a protrusion guide provided in the vicinity thereof, and printing is performed in that state. As a result, the contact condition between the head portion and the card on the card front end side and the card rear end side is stable, and the contact unevenness of the print head is reduced, so that the print density can be made uniform.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a printing head according to the present invention and a card printer using the same will be described in detail with reference to the drawings. Also in the following embodiments, it is assumed that the card 2 to be used is a card having a configuration as shown in FIG. 18, and the ink ribbon 36 having a configuration as shown in FIG. 19 is used. The card conveyance system is also substantially the same, and the vertex of the platen roller 26 is slightly higher than the conveyance plane with respect to the conveyance plane of the plurality of conveyance rollers 27-30.
[0010]
In the card printer 20 shown in FIG. 1, a card transport unit 24 is inserted through a cleaning roller 22 formed by a pair of rollers in which a card 2 is inserted and inserted from a card insertion slot 21 </ b> A provided on the right side of a housing 21. As a result, the card 2 is transported along the transport path CR.
[0011]
The card transport unit 24 includes a pair of transport rollers 27 and 28 provided on the card entry side of the platen roller 26, and a pair of transport rollers 29 and 30 provided on the card exit side of the platen roller 26. Each is pivotally supported at predetermined intervals along the conveyance path CR. Each of the conveying rollers 27 to 30 is composed of a pair of upper and lower rollers that are in rolling contact with each other. In this example, a rotational force is applied to an upper roller from a drive motor (not shown).
[0012]
A head holding mechanism unit 38 including a head unit 32 is provided above the card transport unit 24 at a predetermined position facing the platen roller 26. A print head 33 that is a thermal transfer head is supported at the tip of the head unit 32, and the print head 33 is extended in a direction in which it is pressed against the platen 26 by a head holding mechanism 38, or is shortened in a direction away from the platen 26. Such an operation is given. The ribbon cartridge 37 has the belt-like ink ribbon 36 as described above, and this is wound between the supply reel 34 and the take-up reel 35.
[0013]
In the printing mode, the head holding mechanism 38 is driven to press the printing head 33 against the platen roller 26 via the ink ribbon 36 and the card 2 positioned on the platen roller 26. In this state, a predetermined print signal is applied to the print head 33 to generate heat, and the ink on the ink ribbon 36 is thermally transferred to the surface of the card 2 to print a color image or the like.
[0014]
A magnetic head 41 is disposed on the lower roller side of the conveying roller 29. The magnetic head 41 is brought into contact with the lower surface of the card 2 only during recording and reproduction, and the magnetic head 41 is separated from the conveying path CR except during recording and reproduction. It is made to do.
The magnetic head 41 is exposed, and information based on a predetermined recording signal is recorded on the magnetic stripe 3 formed on one surface of the card 2. Then, by immediately reproducing the recorded information, it can be determined whether or not there is a recording error in the magnetic stripe 3.
[0015]
A plurality of optical interrupter-type optical sensors 42, 43 and 44 in this example are provided on the card conveyance path CR, and the conveyance state of the card 2 is detected.
In the vicinity of the card discharge port 21 </ b> B of the housing 21, a rotary transport unit 25 is provided along the transport path CR. The rotation transport unit 25 includes a rotation mechanism unit 45 that is supported so as to be rotatable about a rotation shaft 46. The rotation mechanism unit 45 includes first and second flipper rollers 47 and 48 each consisting of a pair of upper and lower rollers, and is pivotally supported via a rotation shaft 46 while maintaining a symmetrical positional relationship. Then, a rotational force is applied to each upper roller from a drive motor (not shown).
[0016]
By using the rotary conveyance unit 25, the card 2 is turned upside down and then returned to the printing head 33 side to allow printing on the back side of the card. Further, the following processing is also possible. .
An IC recording / reproducing unit 50 is provided in the vicinity of the rotary conveying unit 25, and the card 2 fed out from the IC 2 when the rotary conveying unit 25 is rotated counterclockwise as shown in FIG. When inserted into the insertion slot 50A, the terminals of the IC memory 4 provided on the other surface of the card 2 come into contact with an interface connector (not shown). As a result, information is recorded and reproduced, and it is possible to determine whether or not there is a recording error in the IC memory 4 by immediately reproducing the recorded information.
[0017]
A defective card tray 51 is further provided on the oblique lower surface side of the rotary conveyance unit 25, and the card 2 in which a recording error to the magnetic stripe 3 or a recording error to the IC memory 4 has occurred is utilized. The defective card tray 51 is then discharged.
Photo interrupter type optical sensors 52 and 53 are provided on the first and second flipper rollers 47 and 48 side, so that the conveyance state of the card 2 can be detected.
[0018]
The card transport unit 24, the rotary transport unit 25, the head holding mechanism unit 38, the magnetic head 41, and the IC recording / reproducing unit 50 described above are driven to predetermined states in accordance with the control of a host computer (not shown) as control means. Is done. Print data, recording information, and the like are also supplied from the host computer side.
[0019]
Next, the configuration and operation of the head holding mechanism 38 will be described with reference to FIG. As shown in FIG. 3, the head holding mechanism portion 38 includes a head unit 32 that supports the printing head 33, cam means 69, a lever member 65 that moves in contact with the cam means 69, and the lever member 65. The connecting member 66 transmits the movement to the head unit 32. The support member 61 is attached to the housing 21 so as to be rotatable about the fixed shaft 60 in the direction indicated by the arrow a. The rear end of the head unit 32 is supported at the other end of the support member 61 so as to be rotatable in the direction indicated by the arrow b around the support shaft 62.
[0020]
A coil spring 63 is attached between the head unit 32 and the support member 61 so that the head unit 32 can rotate integrally with the support member 61 in the direction indicated by the arrow a about the fixed shaft 60. Has been made.
The substantially triangular lever member 65 is attached so as to be rotatable about a fixed shaft 64 in a direction indicated by an arrow c. The cam means 69 can rotate in the direction of arrow e. And it has the cam groove 69B as shown also in FIG. 4, and the pin 70 which moves along this cam groove 69B is engaged. The pin 70 is planted on the lever member 65.
[0021]
By forming the cam grooves 69B of the cam means 69 symmetrically as shown in FIG. 4, the printing head 33 can be brought into contact with and separated from the platen roller 26 with a predetermined stroke. 3 shows a state of the original position separated from the platen roller 26, FIG. 5 shows a state where the platen roller 26 is moved to a position close to the platen roller 26, and FIG. 6 shows a state of rolling contact with the platen roller 26.
[0022]
Further, by forming a plurality of inflection points A1 to A5 in the cam groove 69B as shown in FIG. 4, the movement as shown in FIG. 7 can be imparted to the head unit 32, and the platen roller 26 is brought into rolling contact with the platen roller 26. The head portion of the printing head 33, that is, the heat generating portion 33A can be pressed strongly. Here, the point A1 is the initial position of the cam means 69.
The guide grooves 92 shown in FIG. 7 are for guiding the engaging pins 32 </ b> A provided at the left and right ends of the head unit 32. Accordingly, the protrusion heating element 33A of the printing head 33 can be reliably brought into contact with the top of the platen roller 26.
[0023]
In the present invention, the print head 33 supported by the head unit 32 as described above is configured as follows.
FIG. 8 shows the details. The print head 33 has a head main body 90 attached to the lower surface of the base substrate 89, and a heating element 33A as a head portion having a protruding protrusion on the lower surface of the head main body 90. Is provided. A plate-shaped guide piece 92 whose end face is slightly bent via an auxiliary plate 91 is provided at the right end portion of the heat generating body 33A so that an ink ribbon 36 described later can be smoothly guided to the heat generating body 33A side. .
[0024]
A ribbon guide body 94 is also provided in the vicinity of the heating element 33 </ b> A opposite to the guide piece 92 so that the ink ribbon 36 is not cut. This is a protective guide piece for preventing the ink ribbon 36 from being cut by the end p of the print head 33. Therefore, the ribbon guide body 94 is bent as shown in FIG. 9 and the bent end surface q is molded so as to have a rounded cross-sectional shape.
[0025]
As shown in FIG. 9, the ribbon guide body 94 is bent into a substantially L shape to form a vertical portion 95, and the other bent piece 97 functions as a guide body so that the entire shape is slightly curved. The tip portion is further bent inward slightly. In other words, it is formed as a curved surface with a large curvature. The left and right ends of the bent piece 97 are partly cut and further bent so that the cross-section is L-shaped, and is used as the adjustment auxiliary member 96.
[0026]
Here, as shown in FIG. 8, the vertical portion 95 is fixed to a part of the L-shaped mounting plate 98 and is selected to have such a length that the auxiliary member 96 can be screwed to the lower surface side of the mounting plate 98. The The mounting plate 98 is screwed to the substrate 89.
As shown in the figure, the bent piece 97 has such a length that its end face is opposed to the side surface (slope portion) of the heating element 33A with a small clearance when the ribbon guide body 94 is attached to the substrate 89. Selected. Further, the overall shape is selected so that the end surface slightly enters the side surface of the heating element 33A. This is to prevent the tip of the card 2 from entering the bent piece 97 as will be described later.
[0027]
When the ribbon guide body 94 is attached and fixed to the substrate 89, as shown in FIG. 8, the outer surface 97a of the bent piece 97 protrudes slightly (approximately ΔH = 0 to 0.1 mm) from the apex of the heating element 33A. The attachment position of the guide body 94 is selected. When such a positional relationship is selected, the card 2 is transported to the platen roller 26 side as shown in FIG. 10, and the tip of the card passes through the heating element 33 </ b> A, so that the card tip is placed on the outer surface 97 a of the bent piece 97. Upon contact, the outer surface 97a is used as a guide and enters along the outer surface 97a. Then, when the card 2 is further conveyed and reaches the initial position at which printing on the card 2 starts (referred to as the conveyance position in FIG. 10), the card 2 also contacts the heating element 33A, and the outer surface of the bent piece 97 It will be in the state which also contacted 97a. That is, the card 2 is supported at the tip of the card by the two points of the heating element 33A and the bent piece 97, and more specifically, the three points of these and the platen roller 26.
[0028]
With this three-point support, the apex of the heating element 33A and the outer surface 97a of the bent piece 97 are substantially flush with each other, so that the card 2 is supported in a substantially parallel state. Therefore, it is exactly the same as the supporting state of the figure described in the conventional example. As a result, the contact angle of the heating element 33A with respect to the card 2 and the pressure-bonding force are the same as shown in the figure, and therefore the contact angle when the card 2 is transported to almost the center, and the contact unevenness of the print head is greatly improved. The As a result, a stable printing process can be realized even at the leading end of the card 2, and the occurrence of uneven printing density can be suppressed.
[0029]
This condition is the same at the rear end of the card. FIG. 11 shows a state when the card 2 is transported to the terminal print position. Even in this case, the rear end portion of the card 2 is maintained at the three points of the outer surface 97a of the bent piece 97, the top portion of the heating element 33A, and the top portion of the platen roller 26. The cards 2 are held in parallel with each other. As a result, the contact angle at that time becomes the same as in FIG. 24, and the pressing force to the card 2 can be kept uniform, so that stable printing processing can be realized. Therefore, it is possible to achieve a high-quality print with no print density unevenness. There is no occurrence of wrinkles in the ink ribbon 36.
[0030]
FIG. 12 shows another embodiment of the present invention. Although the overlapping description of the same part as FIG. 8 is omitted, this embodiment sets the height of the outer surface 97a of the bent piece 97 functioning as a guide body as an auxiliary member. 96 allows fine adjustment. Therefore, as shown in FIG. 12, the auxiliary member 96 is formed to be slightly shorter than the thickness of the entire printing head, and is screwed to the mounting plate 98 via the spacer 100 made of an elastic body.
By adjusting the amount of this screwing, the height of the outer surface 97a of the bent piece 97 relative to the protrusion heating element 33A can be finely adjusted. By this fine adjustment, it is possible to finely adjust the parallelism by supporting two or three points when the card 2 enters and leaves the end face, that is, the contact angle of the printing head 33 with respect to the card 2 is constant.
[0031]
FIG. 13 shows a case where screws are fixed via a coil spring 101 instead of the spacer 100, and the same operation and effect as in FIG. 12 can be obtained. Further, by making the thermal head 33 flexible by using a coil spring or the like, the impact at the time of collision with the bent piece 97 when the leading end of the card 2 enters is softened, and the contact condition of the thermal head 33 against the card 2 is abrupt. Change can be suppressed.
In any of the above-described embodiments, the guide body of the printing head is configured by using a part of the ribbon guide body 94, but the guide body 97 (97B, 97C) can be formed on the main body itself as shown in FIG. . In this case, the guide members 97B and 97C for the ridges are integrally formed on the left and right side surfaces of the ridge heat generator 33A while maintaining a small clearance from the ridge heat generator 33A. This provides a three-point support configuration.
[0032]
The pair of guide bodies 97B and 97C are rounded so that the front ends thereof are curved surfaces having a large curvature so that they also function as guides for the ink ribbon 36.
In the present invention, when the printing head 33 is pressure-bonded to the card 2, a guide body 97 is provided so that the front end side and the rear end side of the card 2 can be supported in parallel. The formation position and the number of formation are arbitrary as shown in FIG. 15A and 15B and FIGS. 16A and 16B are examples of two-point support, and FIGS. 15C and 16C are examples of three-point support.
[0033]
【The invention's effect】
As described above, in the present invention, the guide body is provided in the vicinity of the heating element of the printing head. The present invention also enables an image to be printed on a card-like print medium using a print head having such a guide body.
According to this, since the card which is the printing medium can be supported by the guide body and the heating element, the contact angle of the printing head with respect to the card becomes almost constant over the entire surface of the card, and various density unevenness with respect to the card of the printing head is caused. Can improve.
[0034]
In other words, whether the print is on the front end of the card or the print on the rear end of the card, the printing conditions are almost completely the same as when printing the center of the card. Unevenness and unevenness of the pressure-bonding force are improved, and uneven printing density (density unevenness perpendicular to the card conveying direction) at the front end and rear end of the card can be almost completely eliminated. In addition, a change in the hit condition of the print head due to a load change is also suppressed, and thereby density unevenness due to the load change can be improved. Similarly, since the hit condition is uniform, streaky density unevenness in the same direction as the head conveyance direction is also improved. Thus, it has a feature that various density unevenness due to unevenness per head against the card can be improved.
[0035]
In addition, since the contact angle is constant, obstacles such as wrinkles on the ink ribbon can be removed. That is, due to unstable head contact conditions, wrinkles occur in the ink ribbon during high density or high speed printing, and as a result, wrinkled density unevenness occurs in the printed image. This wrinkle-like density unevenness is greatly improved by stabilizing the contact conditions. For this reason, the card printer according to the present invention has the characteristics that the maximum density can be increased more than before, so that the printing density can be improved and the printing speed can be increased.
Therefore, the present invention is very suitable when applied to a print head for printing a color image or the like on a relatively thick and hard card-like print medium, and a card printer using this print head.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a main part showing an embodiment of a card printer according to the present invention.
FIG. 2 is a configuration diagram of a main part in an operating state showing an embodiment of a card printer according to the present invention.
FIG. 3 is a configuration diagram showing an embodiment of a head holding mechanism, and shows an initial state.
FIG. 4 is a plan view of the cam means.
FIG. 5 is a configuration diagram illustrating an operation state when the head holding mechanism moves to a position close to a platen roller.
FIG. 6 is a configuration diagram illustrating an operation state in which a head holding mechanism is pressed against a platen roller.
FIG. 7 is a diagram illustrating a moving state of the head unit.
FIG. 8 is a configuration diagram of a main part showing an embodiment of a printing head according to the present invention.
FIG. 9 is a perspective view showing an embodiment of a ribbon guide body.
FIG. 10 is a diagram illustrating a state in which a card front end side is conveyed to a platen roller.
FIG. 11 is a view showing a state immediately before the rear end side of the card is withdrawn from the platen roller.
FIG. 12 is a configuration diagram showing another embodiment of the printing head according to the present invention (part 1);
FIG. 13 is a configuration diagram showing another embodiment of the print head according to the present invention (part 2);
FIG. 14 is a configuration diagram showing another embodiment of the print head according to the present invention (part 3);
FIG. 15 is a configuration diagram showing another embodiment of the print head according to the present invention (part 4);
FIG. 16 is a configuration diagram showing another embodiment of the print head according to the present invention (part 5);
FIG. 17 is an explanatory diagram showing a concept of a card printer.
FIG. 18 is a diagram illustrating a relationship between a card and a print head.
FIG. 19 is a configuration diagram of an ink ribbon.
FIG. 20 is a diagram showing a card carrying state (No. 1).
FIG. 21 is a diagram showing a card carrying state (No. 2).
FIG. 22 is a diagram illustrating a relationship between a platen roller and a conveyance roller.
FIG. 23 is a diagram showing a state when entering a card.
FIG. 24 is a diagram when the card is conveyed to the center of the platen roller.
FIG. 25 is a diagram showing a state when a card is withdrawn.
[Explanation of symbols]
26 ... Platen roller, 27-30 ... Conveying roller, 33 ... Printing head, 33A ... Head part (heating element), 32 ... Head unit, 36 ... Ink ribbon, 38. ..Head holding mechanism, 90 ... head body, 94 ... ribbon guide body, 97 ... guide body (folded piece), 97a ... outer surface

Claims (10)

In the vicinity of the belt-shaped heating element, on the exit side in the conveyance direction of the card-like print medium conveyed on the platen roller by the conveying roller, the height is substantially the same as the heating element, and the above two points with the heating element Provided is a guide body that supports the card-like printing medium and makes the contact angle and the pressure-bonding force of the heating element to the card-like printing medium uniform from the front end portion to the rear end portion of the card-like printing medium to be conveyed . mark image head. The guide body 請 Motomeko 1 printing head according ink ribbon guide member is used. The guide member is Ru bent pieces der constructed by bending a plate member 請 Motomeko 2 printing head according. The bent piece is formed as a curved surface having a large curvature,
The bent piece end face printing head of the heating element 請 Motomeko 3, wherein attached to the body so that while retaining the spacing small Xu a side surface of the heating element. The guide body printing head 請 Motomeko 1, wherein integrally formed on the heat-generating body in the vicinity to the heating element. And the platen roller, a printing head for transferring an image by Do contact pressure through the ink ribbon to the card-shaped printing medium that will be transported onto the platen roller gives et picture image information to the card-shaped printing medium by the conveying roller Prepared,
The printing head is located in the vicinity of the ridge heating element , on the exit side in the conveyance direction of the card-like print medium to be conveyed, and is almost the same height as the ridge heating element, and two points with the ridge heating element. The guide body that supports the card-like printing medium and uniformizes the contact angle and the crimping force of the protrusion heating element to the card-like printing medium from the front end portion to the rear end portion of the card-like printing medium to be conveyed. Is provided,
The card-shaped printing medium conveyed to the platen roller on, mosquitoes and to perform printing while supported at two points of the ridges heating body and the guide body Dopurinta. The guide body card printer 請 Motomeko 6 wherein the ink ribbon guide member is used. The guide member 請 Motomeko 7, wherein the card printer Ru bent piece der constructed by bending a plate member. The bent piece is formed as a curved surface having a large curvature,
The bent piece end face card printer of the heating body mounted請 Motomeko 8 according to the body so that while retaining the spacing small Xu a side surface of the heating element. The guide body near to the card printer 請 Motomeko 6, wherein integrally formed on the heat-generating body into the heating body.

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