JP3473240B2 - Printer device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal transfer type printer device.

[0002]

2. Description of the Related Art FIG. 20 shows, for example, JP-A-2-185449.
FIG. 21 is a side view showing a state in which the conventional printer device shown in Japanese Patent Laid-Open Publication is waiting for printing, and FIG. 20 and 21,
Reference numeral 1 is a thermal head that is a member that generates heat for performing thermal transfer recording, 2 is a platen provided at a position facing the thermal head 1, 3 is a recording medium, and 4 is yellow, magenta, and cyan on a base film. Ink sheets in which the above three colors are repeatedly applied in order of several tens of screens in the order of yellow, magenta, and cyan respectively, 5 is an ink sheet take-up reel for winding the used ink sheet 4 in a roll, 6 Is an ink sheet supply side reel that stands by in a state in which the ink sheet 4 is wound up in a roll so that the ink sheet 4 before use can be supplied when necessary, and 7 is arranged facing the platen 2. A pinch roller 8 provided to press the platen to convey the recording medium 1,
Is a thermal head holding member fixed to the thermal head for holding the thermal head 1, 9 is a heat radiating member fixed to the thermal head for cooling the thermal head 1, and 10 is for pressing the thermal head 1 against the platen 2. A pressing spring for generating a pressing force for the thermal head 11, a thermal head 1, a thermal head holding member 3, and a heat radiating member 9.
The thermal head unit holding member is provided to hold the entire thermal head unit including the above and to hold down the pressing spring 10, 12 is a cooling fan provided to cool the thermal head 1, and 13 is the thermal head 1. , The center of rotation when the entire thermal head unit including the thermal head holding member 3 and the heat dissipation member 9 is rotated.

Next, the operation will be described. The conventional printer device is configured as described above. For example, in FIG. 20, the recording medium 3 is conveyed to the platen 2 and then stopped, and at this time, the thermal head 1 moves to the platen 2
Waiting above. When printing from this state, as shown in FIG.
The entire thermal head unit including the thermal head 1, the thermal head holding member 3, the heat radiating member 9, the thermal head unit holding member 11 and the like rotates, and the thermal head 1 and the platen 2 come into contact with each other and are moved to a state where they are further pressed. To do. In this state, the recording medium 1 and the ink sheet 4
Of the thermal head 1, and at the same time, a predetermined electric signal is sent to the thermal head 1 to generate heat in the heat generating portion of the thermal head 1 and the heat is transmitted to the ink sheet 4 to melt or sublime the ink and cause the surface of the recording medium 3 to reach. Printing is performed by fixing the ink. At this time, the cooling fan 12 is operated to cool the thermal head 1 at the same time in order to prevent the temperature from rising due to heat generation.

[0004]

In the conventional printer device as described above, since the thermal head moves due to the rotational movement around a certain fulcrum, when the thermal head and its peripheral parts are rotationally moved, many However, there is a problem that the device becomes large in size because it requires a space.

Further, in order to bring the movement of the thermal head close to a linear movement, it is necessary to increase the distance between the thermal head and the center of rotation, and the parts connecting the thermal head and the center of rotation become large in size. Further, there is a problem that the entire apparatus becomes large.

Further, there has been a problem that the thermal head can only be moved by rotational movement and cannot perform a plurality of other tasks.

Further, since there is no means for precisely determining the positional relationship between the thermal head and the platen when the thermal head descends to the position of the platen in order to print from the state of standing by at the upper part due to the rotational movement. In addition, there is a problem in that the positional relationship is not stable every time printing is performed and a good printing result cannot be obtained.

Further, the factor that precisely determines the positional relationship between the thermal head and the platen when the thermal head descends to the position of the platen for printing from the state of standing by at the upper part due to rotational movement is the thermal head itself. The positional relationship between the thermal head and the platen at the time of printing may vary depending on the product because it depends on the accuracy of each of the multiple components that connect the center of rotation of the thermal head and the accuracy of assembly of these components. There was a problem that stable performance could not be exhibited.

The present invention has been made in order to solve the above problems, and a first object thereof is to reduce the space required when the thermal head moves so as to downsize the apparatus. Is.

A second object is to downsize the apparatus by downsizing the parts around the thermal head that are attached to the thermal head.

A third object is to allow the thermal head to perform a motion other than the rotary motion.

A fourth object is that the thermal head and the platen are precisely positioned whenever printing is performed.

A fifth object is that the positioning accuracy of the thermal head and the platen when printing is not influenced by the accuracy of each component or the assembly accuracy.

[0014]

A printer device according to the present invention is a thermal head that generates heat in response to an input signal.
A platen for conveying the recording medium, and
At the start of recording, set the thermal head to the platen
While rotating about an axis parallel to the central axis,
A thermal head that moves linearly in the direction of approaching the platen.
Operation control means .

[0015]

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[0028]

BEST MODE FOR CARRYING OUT THE INVENTION In the printer device according to the embodiment of the present invention, the space required when the thermal head moves can be reduced.

Further, the mechanism for moving the thermal head can be realized with a simple structure, and the space required when the thermal head moves can be reduced.

Further, the mechanism for moving the thermal head can be realized with a small number of parts, and further, the space required for moving the thermal head can be reduced.

Further, the mechanism for moving the thermal head can be realized with a simple structure, and the space required for moving the thermal head can be reduced.

Further, the space required when the thermal head moves can be made small, and even though the thermal head has a simple structure, when the thermal head moves, other work other than moving is performed at the same time. It can be carried out.

Further, the space required when the thermal head moves can be made small, and despite the simple structure, when the thermal head moves, other work other than moving is performed at the same time. It can be carried out.

Also, the space required when the thermal head moves can be made small, and despite the simple structure, when the thermal head moves, other work other than moving is performed at the same time. It can be carried out.

Also, the space required when the thermal head moves can be made small, and despite the simple structure, when the thermal head moves, other work besides movement is also performed at the same time. It can be carried out.

Further, the space required when the thermal head moves can be made small, and despite the simple structure, when the thermal head moves, other work other than the movement is performed at the same time. It can be carried out.

Further, a mechanism for moving the thermal head can be realized with a simple structure and a small number of parts, and a space required for moving the thermal head can be reduced. The positions of the thermal head and the platen can be precisely positioned when performing printing.

Further, the mechanism for moving the thermal head can be realized with a simple structure and a small number of parts, and the space required for moving the thermal head can be reduced. The positions of the thermal head and the platen can be precisely positioned when performing printing.

Further, the mechanism for moving the thermal head can be realized with a simple structure and a small number of parts, and the space required for moving the thermal head can be reduced. The positions of the thermal head and the platen can be precisely positioned when performing printing.

Further, the mechanism for moving the thermal head can be realized with a simple structure and a small number of parts, and the space required for moving the thermal head can be reduced. The positions of the thermal head and the platen can be precisely positioned when performing printing.

Further, a mechanism for moving the thermal head can be realized with a simple structure and a small number of parts, and a space required for moving the thermal head can be reduced. The positions of the thermal head and the platen can be precisely positioned when performing printing.

The present invention will be specifically described below with reference to the drawings showing the embodiments thereof. Embodiment 1. 1 is a perspective view of a printer device according to a first embodiment of the present invention. In the figure, 1-6 and 8-1
Reference numeral 2 is exactly the same as or equivalent to the above conventional apparatus. 14 is a pair of left and right pins having a circular cross section fixed to the thermal head 1 for moving the thermal head 1, and 15 is the pin 1 of the thermal head 1 similar to the pin 14.
A pair of left and right pins having a circular cross section fixed below 4 and 16 when the thermal head 1 moves
And pin 14 and pin 1 for guiding pin 15
A pair of left and right bearings fixed to the inside of the thermal head unit holding member 11 having two oblong holes having the same width as the diameter of 5 and a length longer than the diameters of the pins 14 and 15. Reference numeral 17 is a cylindrical cam for moving the thermal head 1 up and down, 18 is a camshaft fixed to the cylindrical cam 17 and rotatably held at the same time as the cylindrical cam 17, and 19 is fixed to one end of the camshaft. Gear,
Reference numeral 20 is a motor which is a drive source for moving the thermal head 1 up and down, and 21 is a pinion gear which is fixed to the output shaft of the motor 20 and meshes with the gear 19. 2 is a side view showing a state of the printer device according to the first embodiment of the present invention when waiting for printing, and FIG. 3 is a front view showing a state of the printer device according to the first embodiment of the present invention when waiting for printing. Figure 4
FIG. 5 is a side view showing a state during printing of the printer device according to the first embodiment of the present invention, and FIG. 5 is a front view showing a state during printing of the printer device according to the first embodiment of the present invention. In the figure, reference numeral 22 denotes a pair of supply side transport rollers for supplying and transporting the recording medium 3 to the inside of the apparatus, and 23 denotes a pair of discharge side transport rollers for transporting and discharging the recording medium 3 inside the apparatus, A Is the conveying direction during printing of the recording medium 3,
B is the winding direction during printing of the ink sheet 4, and C is the wind direction of the cooling fan 12.

Next, the operation will be described. The printer device according to the first embodiment of the present invention is configured as described above. First, in FIG. 2, the recording medium 3 is conveyed to the platen 2 and then stopped. Waiting above. When printing from this state, the motor 20 shown in FIG. 1 or FIG.
To rotate. Along with this rotation, the pinion gear 20 fixed to the output shaft of the motor 20 rotates, the gear 19 meshing with the pinion gear 20 rotates, and the camshaft 18 fixed to the gear 19 also rotates. Then, the cylindrical cam 17 fixed to the cam shaft 18 rotates, and from the state in which the major radius of the cylindrical cam 17 is on the upper side as shown in FIG. 2, the minor radius of the cylindrical cam 17 is on the upper side as shown in FIG. It becomes a state. At this time, the entire thermal head unit including the thermal head 1 is pressed downward by the pressing force of the pressing spring 10 and moves downward by the difference between the major radius and the minor radius of the cylindrical cam 17. The thermal head unit has a pin 14 and a pin 15 fixed to the thermal head 1 and a bearing 16 having a pin 15 fixed to the thermal head unit holding member 11.
It is guided to the oval groove of and moves downward by only linear motion without rotating motion. Thermal head 1
Is pressed against the platen 2 with the ink sheet 4 and the recording medium 3 interposed therebetween, and the state shown in FIG. 4 or 5 is obtained. In this state, the platen 2 is rotated by a drive source and a drive system (not shown) to start conveying the recording medium 1 in the A direction, and the ink sheet 4 is further moved by a drive source and a drive system (not shown). The conveyance is started so that it is wound in the direction. At the same time, a predetermined electric signal is sent to the thermal head 1, the heat generation portion of the thermal head 1 generates heat, the heat is transferred to the ink sheet 4, the ink is melted or sublimated, and the ink is fixed on the surface of the recording medium 3 to print an image. Is done. At this time, for the purpose of preventing the temperature rise due to heat generation of the thermal head 1, the cooling fan 12 operates to blow air in the direction of C to cool the heat dissipation member 9, and as a result, the heat dissipation member 9 is fixed. Is cooled, and it becomes possible to print a high-density image requiring high energy and continuous printing.

As described above, since the thermal head unit including the thermal head 1 and the members around the thermal head 1 is moved not by the rotary motion about a certain fulcrum but by the linear motion, when the thermal head 1 moves. Since the space required for the device is small, the entire device can be downsized. Further, since the motor 20, the speed reduction system and the cylindrical cam 17 are used as means for moving the thermal head 1 by linear movement, a mechanism for moving the thermal head 1 can be realized with a simple configuration. Pin 14 having a circular cross section on both sides of the head unit
Bearing 1 having fixed holes 15 and 15 and having an oval hole
6 is fixed to the thermal head unit holding member 11 which does not move even when the thermal head moves, and when the thermal head unit moves, the pin is guided along the oval hole of the bearing 16 and, as a result, Since the thermal head 1 or the thermal head unit is linearly moved, and the mechanism for moving the thermal head 1 can be realized with a simple structure, the device can be constructed at low cost.

Embodiment 2. FIG. 6 is a front view showing a state of the printer apparatus according to the second embodiment of the present invention during printing standby, and FIG. 7 is a front view showing a state of the printer apparatus according to the second embodiment of the present invention during printing. . 6 and 7, 1 to 3, 8, 10, 11, 14 to 16 are exactly the same as or correspond to those in the first embodiment. 24
Is an electromagnetic solenoid fixed to the thermal head unit holding member 11, 25 is fixed to an operating portion inside the electromagnetic solenoid 24 at one end, and is fixed to the thermal head holding member 8 at the other end. It is an electromagnetic solenoid actuator that moves up and down in a straight line.

Next, the operation will be described. The printer device according to the second embodiment of the present invention is configured as described above. First, in FIG. 6, the recording medium 3 is conveyed to the platen 2 and stopped. At this time, the thermal head 1 moves to the platen 2. Waiting above. At this time, no current is flowing through the electromagnetic solenoid 24, and at that time, the actuator is set to be held upward so as to lift the thermal head unit upward against the force of the pressing spring 10. When printing from this state, a current is passed through the electromagnetic solenoid 24 to move the actuator 25 downward. Along with this, the thermal head holding member fixed to the tip of the actuator 25 is pushed downward by the force of the pressing spring 10, and as a result, the thermal head moves downward only by linear movement without rotating movement. To do. The thermal head 1 is
The platen 2 is provided with the ink sheet 4 and the recording medium 3 interposed therebetween.
It is pressed against and becomes the state shown in FIG. From this state, the printing operation and cooling of the thermal head are performed in the same manner as in the first embodiment.

As described above, since the electromagnetic solenoid 24 is used as a means for moving the thermal head unit including the thermal head 1 and its peripheral members by linear movement, the mechanism for moving the thermal head 1 requires a small number of parts. Since it can be realized, the assemblability is good, and as a result, the cost can be reduced, and the space required for moving the thermal head 1 is reduced, so that the entire apparatus can be downsized.

Embodiment 3. 8 is a side view showing a state of the printer apparatus according to the third embodiment of the present invention in a print standby state, and FIG. 9 is a front view showing a state of the printer apparatus according to the third embodiment of the present invention in a print standby state, FIG. 10 is a side view showing a printing state of the printer apparatus according to the third embodiment of the present invention, and FIG. 11 is a front view showing a printing state of the printer apparatus according to the third embodiment of the present invention. 8, 9, and 1
0 and FIG. 11, 1 to 6, 8 to 23 and A,
B and C are exactly the same as or correspond to those in the first embodiment. 26 is a pin 15 on the side surface of the thermal head 1.
Is longer than the pin 15 and is fixed below the pin 15. The pair of left and right positioning pins 27 has a circular cross section and is provided to determine the position of the thermal head 1 when printing is performed. A positioning block for deciding the position of the thermal head 1 when contacting with the thermal head 1, 28 is fixed at one end to the thermal head unit holding member 11 and the other end is a free end, and a fulcrum on the thermal head 1 is provided. A pair of left and right leaf springs are provided to apply a biasing force to the positioning pin 26 so as to give a rotational force with a center, 29 is a center of rotation when the thermal head 1 rotates, and 30 is fitted with the pin 15. Then pin 15
So that it can slide up and down, a slotted hole at the bottom of the bearing 16 having a width approximately the same as the diameter of the pin 15, 31 is fitted with the pin 14 and the pin 14 can slide up and down. In addition, the upper side of the bearing 16 having a width larger than the diameter of the pin 14 so that it can be moved to the left and right as well, so that the right side surface of the wide side slot matches the right side surface of the slot 30. Is configured. Further, D is a direction in which the thermal head unit including the thermal head 1 and its peripheral members rotates about the rotation center 29.

FIG. 12 is a perspective view showing a positioning block used for determining a position in printing of the printer device according to the third embodiment of the present invention. In the figure, 27a is a slope portion of the positioning block 27, and 27b is a positioning portion of the positioning block 27 that determines the position of the thermal head 1 during printing. Further, FIG. 13 shows a thermal head 1 of a printer device according to a third embodiment of the present invention.
It is a perspective view which shows the leaf spring used in order to give the rotational force centering on a certain fulcrum. In the figure, 28a is a fixed portion of the leaf spring 28 to the thermal head unit holding member 11, 28b is a free end portion of the leaf spring 28 which comes into contact with the positioning pin 26, and 28c is a spring portion which is bent by elastic deformation. FIG. 14 is a side view showing a state in which the thermal head 1 of the printer device according to the third embodiment of the present invention moves from the standby state to the printing state, and FIG. 15 shows the printer device according to the third embodiment of the present invention. It is a schematic diagram which shows the relationship between the positioning pin 26 and the positioning block 27 when the thermal head 1 moves from a standby state to a printing state.

Next, the operation will be described. The printer device according to the third embodiment of the present invention is configured as described above. First, in FIG. 8, the recording medium 3 is conveyed to the platen 2 and then stopped. Waiting above. At this time, since the free end portion 28b of the leaf spring 28 exerts a biasing force on the positioning pin 26, the thermal head unit including the thermal head 1 and its peripheral members has a time centered on the pin 15, that is, the rotation center 29. Although it rotates around, the pin 14 cannot rotate when it hits the left side surface of the wide and long hole portion 31 of the bearing, and the thermal head 1 stands still with a slight inclination. FIG. 9 is a front view showing this state. When printing is performed from this state, the motor 20 shown in FIG. 9 is rotated. Along with this rotation, the pinion gear 20 fixed to the output shaft of the motor 20 rotates, the gear 19 meshing with the pinion gear 20 rotates, and the camshaft 18 fixed to the gear 19 also rotates. The cylindrical cam 17 fixed to the cam shaft 18
Rotates, as shown in FIG. 8, the major radius of the cylindrical cam 17 is on the upper side, and the minor radius of the cylindrical cam 17 is on the upper side as shown in FIG. At this time, the pressing spring 10
The entire thermal head unit including the thermal head 1 is pressed downward by the pressing force of, and moves downward by the difference between the major radius and the minor radius of the cylindrical cam 17.

As shown in FIG. 13, in the leaf spring 28, the fixed portion 28a is fixed to the thermal head unit holding member 11, and the free end portion 28b fixes the positioning pin 26.
In FIG. 8, the thermal head 1 is urged to rotate clockwise. Even if the thermal head 1 starts to move downward in this state, since the free end portion of the leaf spring 28 has a downward width, the positioning pin 26 fixed to the thermal head 1 moves downward simultaneously with the thermal head 1. Even if it moves, it does not come off and continues to generate urging force. Next, as shown in FIG. 15, first, the positioning pin 26 is
As shown in the state A, it stands by upward, but as shown in the state B, it gradually moves downward and then the positioning pin 26
As shown in the state C, as it hits the slope portion 27a of the positioning block 27, as shown in the state C, as it moves further downward, the biasing force of the leaf spring 28 is resisted as shown in the state D. And gradually moves to the right side in the figure along the slope portion 27a. Then, as shown in the state E, when it moves to the right to the positioning portion 27b, the positioning pin 26 does not move further to the right due to the biasing force of the leaf spring 28, and the positioning portion 27b of the positioning block 27 does not move. Moves only downward while being pressed against. Since the positioning pin 26 is fixed to the thermal head 1, as shown in FIG. 14, the thermal head 1 moves downward while moving from state a to state a, state c,
As in state D and state E, the pin 15 or the center of rotation 29
Around the center, it moves downward while rotating counterclockwise.

Through the above-described operation, the thermal head 1 is pressed against the platen 2 with the ink sheet 4 and the recording medium 3 interposed therebetween, and the state shown in FIG. 10 or 11 is obtained. In this state, the platen 2 is rotated by a drive source and a drive system (not shown) to start conveying the recording medium 1 in the A direction, and the ink sheet 4 is further moved by a drive source and a drive system (not shown). The conveyance is started so that it is wound in the direction. At the same time, a predetermined electric signal is sent to the thermal head 1, the heat generation portion of the thermal head 1 generates heat, the heat is transmitted to the ink sheet 4, the ink is melted or sublimated, and the ink is fixed on the surface of the recording medium 3 to print an image. Is done. At this time, for the purpose of preventing the temperature rise due to heat generation of the thermal head 1, the cooling fan 12 operates to blow air in the direction of C to cool the heat dissipation member 9, and as a result, the heat dissipation member 9 is fixed. Is cooled,
It is possible to print a high-density image that requires high energy and continuous printing.

As described above, the thermal head unit including the thermal head 1 or members around the thermal head 1 moves while linearly moving, and the thermal head 1
One end is fixed to a thermal head unit holding member 11 that does not move in a linear motion so that the thermal head 1 can be rotated in one direction about a fulcrum, and the other end is a free end.
It has a plate spring that contacts and biases the positioning pin 26 fixed to the
By pressing the positioning pin 26 against the positioning block 27, it is possible to perform the positioning accurately when the thermal head 1 performs recording, so that it is possible to provide a device with high printing quality, and this positioning mechanism has a small number of parts. Since it is realized with a simple structure, an inexpensive device can be provided, and the space required when the thermal head 1 moves is reduced, so that the entire device can be downsized.

Fourth Embodiment FIG. 16 is a side view showing a state of the printer device according to the fourth embodiment of the present invention during printing standby, and FIG. 17 is a side view showing a state of the printer device according to the fourth embodiment of the present invention during printing. . 16 and 1
7 in 1 to 6, 8 to 18, 22, 23, 26 to 2
7b, 29 to 31, A, B, C and D are the same as those in the third embodiment.
Is exactly the same as or equivalent to. In FIG. 16 and FIG. 17, reference numeral 32 designates one end fixed to the non-moving apparatus side and the other end fixed to the thermal head 1 or the thermal head holding member 8 to rotate about a fulcrum on the thermal head 1. The tension spring is provided to generate a biasing force that gives

Regarding the operation, in FIGS. 16 and 17, the thermal head 1 is moved to the pin 15, that is, the center of rotation 2.
The procedure is the same as that of the third embodiment except that the urging force for rotating clockwise around 9 is realized not by the leaf spring but by the tension force of the tension spring 32.

As described above, the thermal head unit including the thermal head 1 or the members around the thermal head 1 moves while linearly moving, and the thermal head 1
It has a tension spring whose one end is fixed to the device side that does not move in a linear motion and the other end is fixed to the thermal head 1 or the thermal head holding member 8 so that it can rotate in one direction around a certain fulcrum. Since the rotational movement due to this spring force presses the positioning pin 26 against the positioning block 27, the thermal head 1 can be precisely positioned when performing recording, so that an apparatus with high printing quality can be provided. Further, since this positioning mechanism is realized with a simple configuration with a small number of parts, an inexpensive device can be provided, and further, the space required when the thermal head 1 moves is reduced, so that the entire device is Can be miniaturized.

Embodiment 5. FIG. 18 is a side view showing a state of the printer apparatus according to the fifth embodiment of the present invention during printing standby, and FIG. 19 is a side view showing a state of the printer apparatus according to the fifth embodiment of the present invention during printing. . 18 and 1
9 in 1 to 6, 8 to 18, 22, 23, 26 to 2
7b, 29 to 31, A, B, C and D are the same as or correspond to those in the third embodiment. 18 and 1
In FIG. 9, 33 is an urging force that fixes one end to the thermal head unit holding member 11 that does not move and the other end to the thermal head 1 to give a rotational force about a fulcrum on the thermal head 1. Is a compression spring provided for generating

Regarding the operation, in FIGS. 18 and 19, the thermal head 1 is moved to the pin 15, that is, the rotation center 2.
The third embodiment is the same as the third embodiment except that the biasing force for rotating clockwise around 9 is realized by the compression spring 33 instead of the leaf spring.

As described above, the thermal head unit including the thermal head 1 or the members around the thermal head 1 moves while linearly moving, and the thermal head 1
It has a compression spring in which one end is fixed to the thermal head unit holding member 11 which does not move in a linear motion and the other end is fixed to the thermal head 1 so as to be rotatable in one direction around a certain fulcrum, By the rotational movement by the spring force, the positioning pin 26 is pressed against the positioning block 27, so that the thermal head 1 can be precisely positioned when performing recording, so that an apparatus with high printing quality can be provided. Since the positioning mechanism is realized by a simple configuration with a small number of parts, an inexpensive device can be provided, and the space required when the thermal head 1 moves is reduced, so that the entire device can be downsized. it can.

[0060]

The present invention is configured as described above.
Therefore, at the start of recording on the printer device, the server
Reduces the space needed for the Mulhead to move
You can

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[Brief description of drawings]

FIG. 1 is a perspective view showing a printer device according to a first embodiment of the present invention.

FIG. 2 is a side view showing a state in which the printer apparatus according to the first embodiment of the present invention stands by for printing.

FIG. 3 is a front view showing a state in which the printer device according to the first embodiment of the present invention stands by for printing.

FIG. 4 is a side view showing a state during printing of the printer device according to the first embodiment of the present invention.

FIG. 5 is a front view showing a state during printing of the printer device according to the first embodiment of the present invention.

FIG. 6 is a front view showing a state in which the printer device according to the second embodiment of the present invention stands by for printing.

FIG. 7 is a front view showing a state during printing of the printer device according to the second embodiment of the present invention.

FIG. 8 is a side view showing a state in which the printer apparatus according to the third embodiment of the present invention stands by for printing.

FIG. 9 is a front view showing a state in which the printer device according to the third embodiment of the present invention stands by for printing.

FIG. 10 is a side view showing a state during printing of the printer device according to the third embodiment of the present invention.

FIG. 11 is a front view showing a state during printing of the printer device according to the third embodiment of the present invention.

FIG. 12 is a perspective view showing a positioning block used to determine a position in printing of the printer device according to the third embodiment of the present invention.

FIG. 13 is a perspective view showing a leaf spring used to apply a rotational force about a certain fulcrum to the thermal head of the printer device according to the third embodiment of the present invention.

FIG. 14 is a side view showing a state where the thermal head of the printer device according to the third embodiment of the present invention moves from the standby state to the printing state.

FIG. 15 is a schematic diagram showing a relationship between a positioning pin and a positioning block when the thermal head of the printer device according to the third embodiment of the present invention moves from the standby state to the printing state.

FIG. 16 is a side view showing a state in which the printer device according to the fourth embodiment of the present invention stands by for printing.

FIG. 17 is a side view showing a state during printing of the printer device according to the fourth embodiment of the present invention.

FIG. 18 is a side view showing a state in which the printer device according to the fifth embodiment of the present invention stands by for printing.

FIG. 19 is a side view showing a state during printing of the printer device according to the fifth embodiment of the present invention.

FIG. 20 is a side view showing a state in which the conventional printer device is in a print standby state.

FIG. 21 is a side view showing a state during printing of a conventional printer device.

[Explanation of symbols]

1 thermal head, 2 platen, 3 recording medium, 4
Ink sheet, 5 ink sheet take-up side reel, 6 ink sheet supply side reel, 7 pinch roller, 8 thermal head holding member, 9 heat radiating member, 10 pressing spring,
11 thermal head unit holding member, 12 cooling fan, 13 rotation center of thermal head, 14, 15
A pair of left and right pins, 16 a pair of left and right bearings, 17 cylindrical cams, 18 cam shafts, 19 gears, 20 motors,
21 pinion gear, 22 supply side transport roller, 23
Discharge side transport roller, 24 Electromagnetic solenoid, 25 Electromagnetic solenoid actuator, 26 Positioning pin, 2
7 positioning block, 7a slope part of positioning block, 27b positioning part of positioning block,
28 leaf spring, 28a leaf spring fixed portion, 28b leaf spring free end portion, 28c leaf spring spring portion, 29
Center of rotation, 30 bearing long hole portion, 31 wide bearing long hole portion, 32 tension spring, 33 compression spring, A conveying direction during printing of recording medium, B ink sheet winding direction, C
Wind direction of cooling fan, rotation direction of D thermal head.

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshinori Tsunoda 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Masami Tomita 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Machinery Co., Ltd. (56) Reference Japanese Unexamined Patent Publication No. 6-340144 (JP, A) Actual development No. 4-30960 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B41J 25 / 312 B41J 2/32 B41J 25/316

Claims (3)

(57) [Claims] 1. A thermal that generates heat in response to an input signal.
Head, a platen that conveys the recording medium, and the thermal head when recording on the recording medium is started.
Is rotated about an axis parallel to the central axis of the platen.
And move linearly toward the platen.
A printer apparatus comprising: a thermal head operation control means for controlling the operation . 2. A thermal head operation control means is a thermistor.
Rotate the head around an axis parallel to the center axis of the platen.
Comprising a spring arranged to generate a rotating force
The printer device according to claim 1, wherein the printer device is a printer. 3. The thermal head at the start of recording
The thermal head so that the position of
Thermal head stop position control means to stop
The printer device according to claim 1 or 2 .