JPH0443334Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a thermal transfer recording device capable of performing color recording on rolled recording paper and folded recording paper.

(B) Prior Art Recently, various recording devices have been made capable of color recording, and thermal transfer recording devices have also become capable of color recording as seen in Japanese Patent Application Laid-Open No. 140266/1983. It is configured.

Such a thermal transfer recording device uses an ink sheet having a plurality of color ink layers, and records with each ink layer sequentially on a recording paper.
Each time thermal transfer recording using one ink layer is completed, the recording paper is returned to the initial position.

On the other hand, there is a thermal transfer recording apparatus that can selectively use rolled recording paper and folded recording paper, as disclosed in Japanese Patent Application Laid-Open No. 60-206683 filed by the present applicant.

3 and 4 show side views of such a thermal transfer recording device.

First, FIG. 3 shows the state in which a roll of recording paper is used. The ink sheet 2 pulled out from the ink sheet roll 1 is moved to the guide shaft 3 and the first
Thermal head 5 via head guide shaft 4
and the rotatable platen 6, and the second
It reaches the take-up roll 11 via the head guide shaft 7, the contact between the conveyance roller 8 and the pressure roller 9, and the guide shaft 10.

On the other hand, the recording paper 1 is pulled out from the lower end side of the recording paper roll 12 mounted between the pair of holders 108.
3 is an insertion opening 15 of an insertion path 15 which is provided through a guide roller 14 between two plates with a slight gap between them.
a, passes through the space between the first conveyance roller 16 and the first pressure roller 17, passes through the space between the thermal head 5 and the platen 6, and then passes through the space between the second conveyance roller 18 and the second pressure roller. 19, and reaches the discharge port 20a of a discharge passage 20, which is provided between two plates with a slight gap between them.

The thermal head 5 has a pair of plate brackets 21
The platen 6 can be freely moved toward and away from the platen 6.

The plate-shaped bracket 21 has a substantially V-shape consisting of a first branch part 22 and a second branch part 23, and a connecting part of each branch part is rotatably supported by a shaft 24.
A thermal head 5 is disposed on the first branch 22,
A cam pressure shaft 26 having a cam pressure roller 25 is disposed on the second branch 23 . Further, the plate-shaped bracket 21 is connected to the tip of the second branch 23 and the shaft 27.
shaft 2 by a spring 28 stretched between
It is urged to rotate clockwise around 4.

A cam support shaft 30 having a fan-shaped eccentric cam 29 is disposed above and parallel to the cam pressure shaft 26, and the cam pressure roller 25 and the eccentric cam 29 are opposed to each other.

The thermal head 5 is moved toward and away from the platen 6 by appropriately rotating the cam support shaft 30 by a drive motor (not shown).
That is, when the eccentric cam 29 is positioned above the cam support shaft 30, the plate bracket 21
is urged to rotate clockwise around the shaft 24 by a spring 28, and the thermal head 5 is rotated clockwise around the shaft 24.
press against. On the other hand, when the eccentric cam 29 is positioned below the cam support shaft 30, the eccentric cam 29 pushes down the cam pressure shaft 26, and the plate-shaped bracket 21 resists the biasing force of the spring 28 and rotates around the shaft 24. Rotate counterclockwise to
Thermal head 5 is spaced apart from platen 6.

Note that the lamp 31 and the color sensor 32, which are arranged opposite to each other with the ink sheet 2 in between, detect the color of the ink sheet 2, and when the ink sheet 2 used has a plurality of color inks, the color sensor 32 is used to detect the color of the ink sheet 2. signals are used.

Each of the above-mentioned parts is attached to a pair of fixed side plates 40 and a pair of movable side plates 42 arranged slightly inside and parallel to these fixed side plates and rotatable about a shaft 41.

An ink sheet roll 1, a guide shaft 3, a thermal head 5 and its peripheral portion, a conveyance roller 8, a guide shaft 10, and a take-up roll 11 are attached to the pair of fixed side plates 40.

The pair of movable side plates 42 include the recording paper roll 12,
Guide roller 14, first conveyance roller 16, first pressure roller 17, platen 6, second conveyance roller 18
and a second pressure roller 19 are attached.

On the other hand, FIG. 4 shows how the folded recording paper is used. The ink sheet 2 is installed in exactly the same manner as shown in FIG. 3 above.

When using the folded recording paper 50, a cylindrical guide shaft 51 is installed between the holders 108 instead of the recording paper roll 12.

The folded recording paper 50 is guided from the outside to the inside of the apparatus by a guide plate 60 attached to the rear upper part of the apparatus.

The guide plate 60 includes a main plate 61 and a holding plate 62.
It consists of The main plate 61 has a side plate 63 which is bent on both sides, and one end of the side plate 63 protrudes from the front end of the main plate 61, and the tip is suspended downward, and the L-shaped arm 6
It has become 4. Furthermore, a hook portion 65 is formed at the tip of the arm 64. The holding plate 62 has protrusions 66 at both rear ends rotatably engaged with step-shaped notches 67 provided in the side plate 63, and locking portions 68 are provided at both rear ends. By coming into contact with this, the movement of the presser plate 62 in the clockwise direction is restricted, and the presser plate 62 can be maintained in an upright position.
Then, the guide plate 60 allows the hook portion 65 at the tip of the L-shaped arm 64 to come into contact with the shaft 52 while the main plate 61 is in an upright position, and the main plate 61 can be moved clockwise in this state. As a result, the main board 61 is set.

Then, by inserting the folding recording paper 50 between the main plate 61 and the presser plate 62 with the presser plate 62 upright, and then rotating the presser plate 62 counterclockwise, the folding recording paper 50 is inserted. 50 is prevented from skewing by the side plates 63, and is guided forward by the presser plate 62 without curving upward.

In this way, the folded recording paper 50 guided into the apparatus passes through the upper surface of the guide shaft 51, and then the recording paper 13 pulled out from the recording paper roll 12 described above
installed along the same route.

The cylindrical guide shaft 53 is mounted with the protrusions 54 at both ends resting on the notches 109 at the rear of the upper part of the holder 108 so that the lower surface of the guide shaft 53 comes into contact with the folded recording paper 50 .

Thus, with the thermal head 5 and the platen 6 in pressure contact, the ink sheet 2 and the recording paper 1 are
One ink of the ink sheet 2 is injected onto the recording paper 13 (or the folded recording paper 50) by driving the thermal head 5 to generate heat while simultaneously conveying the folded recording paper 3 (or the folded recording paper 50) to the left in the figure. A thermal transfer recording is made by layer.

(c) Problems to be solved by the invention By the way, when color recording is performed using the above-mentioned thermal transfer recording device, after recording with one ink layer is completed, the recording paper 13 (or folded recording paper 50) is It is necessary to transport it toward the center right to return it to its initial state.

At this time, as shown in FIG.
2, the roll 12 is rotated counterclockwise in the figure to rewind the recording paper 13 onto the roll 12. As shown in FIG. In this case, the guide shaft 5
Turn 1 clockwise in the figure and fold the recording paper 5.
It will return 0. That is, when rewinding the recording paper 13 or the folded recording paper 50, a drive system is required to rotate the recording paper roll 12 and the guide shaft 50 in different directions depending on the recording paper used.

Therefore, an object of the present invention is to perform such rotation in different directions with a simple configuration.

(d) Means for solving the problem The present invention solves the problem in a tensioned state of a transmission belt that is stretched to transmit rotational force to a rotating body that rotates a guide shaft that conveys a recording paper roll or folded recording paper. According to the type of the recording paper roll and the folded recording paper, the transmission belt can be changed to parallel or cross-over, and a pulley is provided to press the outer circumferential surface of the transmission belt when the belt is parallel. It is characterized by

(E) Effect According to the present invention, the rotation direction of the rotating body can be arbitrarily set simply by changing the tension state of the transmission belt to parallel or cross-stretching, and when the transmission belt is stretched in parallel, the outer circumferential surface of the transmission belt is pressed by a pulley.

(F) Embodiment FIGS. 1 and 2 are perspective views showing the rotation drive mechanism of the recording paper roll 12 and the guide shaft 50 when the recording paper roll 12 and the folded recording paper 50 are used, respectively.

In both figures, a drive shaft 10 is rotated counterclockwise in the figures by a drive motor (not shown) during recording.
0, a gear pulley 101 is attached, and a gear belt 103 is stretched between the gear pulley 101 and a gear pulley 102 rotatably provided on the movable side plate 42. Furthermore, gear pulley 1
A gear belt 106 is stretched between a gear pulley (not shown in the figure) formed integrally with the rotary shaft 102 and a gear pulley 105 attached to the rotating shaft 104.

Here, the gear belt 106 can freely change the tensioning state to parallel or cross-stretching, and in FIG. 1 it is stretched in a parallel state, and in FIG. They are strung in a criss-cross manner. That is, to change the gear belt 106 from parallel as shown in FIG. 1 to cross as shown in FIG. 2, after removing the auxiliary pulley 107, the operator removes the gear belt 106 from the gear pulley 105 and puts the gear belt 106 in the cross. Change it and hang it on the gear pulley 105 again. Note that the distance between the centers of gear pulley 102 and gear pulley 105 is always the same regardless of how the gear belt 106 is hooked, so when the gear belt 106 is hooked in parallel, the tension of the gear belt 106 is lower than when it is hooked across. It will come loose. Therefore, when the gear belt 106 is hung in parallel, the gear belt 106
By pressing the outer peripheral surface of the belt 10
An auxiliary pulley 107 for applying tension to the movable side plate 42 is arranged so as to be freely attachable to the movable side plate 42.

Although not shown in the figure, the tip of the rotating shaft 104 protrudes inward from the holder 108 so that the tip can hold the recording paper roll 12 or the guide shaft 51 and transmit rotational force thereto. It is composed of

In this configuration, when the drive shaft 100 is rotated clockwise by a drive motor (not shown), in FIG. The recording paper roll 12 is rotated clockwise in FIG. 1 by the rotation shaft 104, and the recording paper 13 is rewound. On the other hand, in FIG. 2, the rotational force of the drive shaft 100 is reversed by the gear belt 106 and transmitted to the rotating shaft 104, and the guide shaft 51 is rotated counterclockwise in FIG. 50 is returned.

(g) Effects of the invention According to the invention, the transmission belt, which can be changed to parallel or cross-over by the operator's manual operation, can be used to connect the recording paper roll or the folded recording paper. The guide shaft is placed on a rotating body that holds and rotates the guide shaft, and when the transmission belt is hung in parallel, a pulley is placed that presses the outer peripheral surface of the transmission belt and applies tension to the transmission belt. Therefore, regardless of how the transmission belt is hung, a constant tension can always be applied to the transmission belt.

Further, when rewinding the recording paper of the recording paper roll or the folded recording paper, there is no need to provide a drive system for rotating the recording paper roll or the guide shaft in different directions, resulting in a very simple configuration.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention,
FIG. 1 is a perspective view of a main part showing a state in which a recording paper roll is used, and FIG. 2 is a perspective view of a main part showing a state in which a folded recording paper is used. 3 and 4 show preferred examples, with FIG. 3 being a side view showing a state in which a recording paper roll is used, and FIG. 4 being a side view showing a state in which a folded recording paper is used. 12...Recording paper roll, 13...Recording paper, 50
... Folding recording paper, 51 ... Guide shaft, 10
0... Drive shaft, 104... Rotating shaft, 106... Gear belt.

Claims (1)

[Claims for Utility Model Registration] A rotating body that holds and rotates a recording paper roll or a guide shaft, a platen, and a thermal head provided opposite to the platen; Recording on this recording paper is made possible by installing a recording paper roll and supplying the recording paper pulled out from this recording paper roll between the platen and the thermal head, and also attaching the guide to the rotating body. A thermal transfer recording device capable of recording on folded recording paper by attaching a shaft and bringing the folded recording paper into contact with the outer surface of the guide shaft, and then supplying the folded recording paper between the platen and the thermal head facing each other. , tension is applied to transmit the rotational force to the rotating body so that the rotating body is rotated in a direction opposite to the direction in which the recording paper roll or folded recording paper is fed between the platen and the thermal head. a transmission belt which can be hung in parallel or crosswise depending on the type of the recording paper roll and the folded recording paper; and a pulley that applies tension to the transmission belt by pressing the outer circumferential surface of the transmission belt so that it is in a tensioned state similar to that in the case of cross-crossing. Thermal transfer recording device.