JPH0320124Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a recording device that can use rolled recording paper and continuous recording paper, and in particular, to a conveyance structure when continuous recording paper is used. The present invention relates to a recording device having such characteristics.

(B) Prior Art Conventionally, in a recording device using continuous paper, for example, folded recording paper, the folded recording paper is
As seen in Japanese Utility Model Publication No. 57-32421, the recording paper is sent out from the recording paper reservoir by a feed roller with a sprocket and supplied to the printing section.

By the way, a feed roller with a sprocket cannot be used in a recording apparatus that can use rolled recording paper or single sheet recording paper in addition to such folded recording paper. Therefore, in order for this recording device to convey the folded recording paper normally without causing it to run, it is necessary to maintain a good balance of pressure between the conveyance roller and the folded recording paper at all times, but this is extremely difficult. It is.

(c) Purpose of the invention The purpose of the invention is to feed continuous recording paper normally without causing it to skew.

(d) Structure of the invention The recording device of the invention has a housing, a pair of reel plates disposed inside the housing, a platen, and a recording head facing the platen, and has a housing between the reel plates. This recording device records on the recording paper by feeding the recording paper fed out from the held roll of recording paper between the opposing platen and the recording head, and further includes continuous recording paper. an opening formed in the casing for feeding into the casing; a first guide shaft detachably mounted on the top of the reel plate; and a first guide shaft mounted between the reel plates in place of the rolled recording paper. the continuous recording paper fed through the opening is brought into contact with the lower peripheral surface of the first guide shaft, and then brought into contact with the upper peripheral surface of the second guide shaft. Therefore, the present invention is characterized in that the continuous recording paper is supplied between opposing sides of the platen and recording head while regulating both ends of the continuous recording paper by the pair of reel plates, and recording is performed on the continuous recording paper.

(E) Embodiment The thermal transfer recording device of the present invention is characterized in that it can use both rolled recording paper and folded recording paper. FIG. 1 shows the state before the recording paper is attached, and FIGS. 2 and 3 show the state when the rolled recording paper (RP) is used. Here, FIG. 3 shows the fixed side plate 31 and the movable side plate 3 on the right side.
The second prize is omitted from the illustration. The ink sheet 1a pulled out from the ink sheet roll 1 is
After passing through the guide roller 2, passing through the gap between the thermal head 3 and the rotatable platen 4, and further passing through the gap between the conveyance roller 5 and the pressure roller 6, passing through the guide roller 7, and then passing through the take-up roll 8. It is wound up.
The drive gear 9 is rotationally driven by a motor 10, and this rotational driving force is transmitted via a transmission gear 11 to a gear 12 fixed to the conveyance roller 5, so that the conveyance roller 5 is rotationally driven. Further, the take-up roll 8 is hollow, and both ends thereof are connected to second left and right reel plates 5.
0,51, and the second left reel plate 5
The rotational driving force of the motor 10 is transmitted to the transmission gear 13, the transmission shaft 14, and a gear (not shown).
Therefore, the take-up roll 8 is rotationally driven. Therefore, when the motor 10 rotates, the ink sheet 1a is drawn out from the ink sheet roll 1 by the rotation of the conveyance roller 5, and is finally wound up on the take-up roll 8.

The rolled recording paper (RP) is guided by the guide roll 15.
The ink sheet 1a is guided through the insertion port 16 to the space between the thermal head 3 and the platen 4, moves between the thermal head 3 and the platen 4 together with the ink sheet 1a, and is discharged from the discharge port 17. The thermal head 3 is biased to rotate clockwise around a shaft 18 by a spring body 20 disposed between its lower end 3a and a shaft 19, and is in pressure contact with the platen 4. Therefore, the ink on the ink sheet 1a located between the thermal head 3 and the platen 4 is transferred and recorded onto the rolled recording paper (RP) in a pattern corresponding to the heat generation pattern of the thermal head 3.

The thermal head 3 is connected to the head release lever 2.
1 allows it to be separated from the platen 4. The head release lever 21 is composed of a first lever 22 that rotates around a shaft 24 and a second lever 23 that is bent counterclockwise around a shaft 25 by a spring body 26. The first lever 22 has a hook portion 27 formed at its lower end, and the hook portion 27 engages with a contact roller 28 located halfway on the second lever 23 . Further, the shaft 25 is connected to the second lever 2
The shaft 25 is further provided with an engaging pawl 29 that engages with the lower end 3a of the thermal head 3. When the first lever 22 is rotated counterclockwise, the hook portion 27 comes into contact with the contact roller 28 . Furthermore, when the first lever 22 is rotated, the second lever 2
3 rotates clockwise together with the shaft 25 around the shaft 25 against the action of the spring body 26. Therefore, when the engaging claw 29 comes into contact with the lower end 3a of the thermal head 3 and pushes it up, the thermal head 3 rotates counterclockwise about the shaft 18 against the action of the spring body 20. Separate from platen 4. Here, the contact roller 28 is moved clockwise in a circular orbit by the first lever 22. When the contact roller 28 is positioned beyond the highest point of this circular orbit, the urging force of the spring body 26 causes the first lever 22 to move beyond the highest point again and return to its original position. The hook portion 27 presses the abutment roller 28 from above to prevent it, and the first lever 22 and the second lever 23 are held in the above position. (Figures 1 and 2) That is, head release lever 2
1 has a stable point when the thermal head 3 and platen 4 are in contact with each other and when they are separated from each other, and these states are maintained.

Each of the above components is attached to a pair of fixed side plates 31 of the housing 30 and a pair of movable side plates 32 arranged slightly inside and parallel to these fixed side plates. (FIGS. 1 and 2) A fixed side plate 31 has rotating shafts for the ink sheet roll 1, guide roller 2, conveyance roller 5, guide roller 7, take-up roll 8, and thermal head 3, as well as a motor 10. A transmission system for the rotational driving force of the motor, a head release lever 21, etc. are supported.

A pair of movable side plates 32 support a platen 4, a pressure roller 6, and a roll of recording paper (RP).

Thus, the transmission shaft 14 to which the transmission gear 13 is attached
penetrates the pair of fixed side plates 31 and supports the pair of movable side plates 32 rotatably about the transmission shaft 14.

A stop pin 33 and a lock pin 34 are arranged at the rear upper ends of the pair of fixed side plates 31, respectively, and when the pair of movable side plates 32 rotate clockwise, the rear ends of the pair of movable side plates 32 touch the stop pins 33. limited by contact. Further, a lock lever 36 is arranged at the rear end of the pair of movable side plates 32 and is rotatable together with the shaft 35 (FIGS. 1 and 2).
By locking the lock lever 36 with the lock pin 34, the abutting state is locked. At this time, the thermal head 3 comes into elastic contact with the platen 4, and the pressure roller 6 comes into contact with the conveyance roller 5.

FIG. 1 shows a state in which the movable side plate 32 is rotated counterclockwise about the transmission shaft 14. At this time, the ink sheet roll 1 is exposed, so that the ink sheet roll 1 can be easily replaced.

The ink sheet roll 1, take-up roll 8, and roll-shaped recording paper (RP) have hollow rotation shafts to facilitate their replacement, and the first to third left and right reels are connected to each other from both sides. Boards 40, 41,
They are pressed and clamped at 50, 51, 60, and 61.
1st and 3rd left and right reel plates 40, 41, 60, 6
1 have the same structure. FIG. 4 shows the third left and right reel plates 60, 61. The third left reel plate 60 is fixed to the movable side plate 32 together with the shaft 62, and the third right reel plate 61 is fixed to the other movable side plate 32. It is attached to a fixed shaft 63 so as to be movable forward and backward in the direction of the shaft, and is further urged leftward by a spring 64. Therefore, by retreating the third right reel plate 61 against the action of the spring 64, the rolled recording paper (RP) can be easily loaded and unloaded.

Here, the diameter of the third left and right reel plates 60, 61 is as follows:
Approximately 2 to 5 times larger than the maximum diameter of the roll recording paper (RP) (i.e., the diameter of the roll recording paper (RP) when not in use)
Therefore, the third left and right reel plates 60 and 61 serve as guide plates at both ends of the roll of recording paper (RP) when the roll of recording paper (RP) is fed out, and the roll of recording paper is tilted. prevent the occurrence of

As shown in FIG. 5, the second left and right reel plates 50 and 51 are integrally rotatably attached to a shaft 52 fixed to the fixed side plate 31 together with a pulley 53, The right reel plate 51 is attached to a shaft 54 fixed to the other stationary side plate 31 so as to be able to move forward and backward in the direction of the shaft and rotate freely, and is further urged leftward by a spring 55.

In such a configuration, the pair of movable side plates 32
With it flipped upwards as shown in Figure 1,
The ink sheet roll 1, the ink sheet 1a, and the take-up roll 8 are set at predetermined positions, and after the setting is completed, the pair of movable side plates 32 are rotated clockwise and locked. Then, the head release lever 21 is manually operated to separate the thermal head 3 and the platen 4, and the rolled recording paper (RP) mounted between the third left and right reel plates 60 and 61 is inserted through the guide roll 15. It is inserted through the opening 16 and between the thermal head 3 and platen 4. When further inserted, the leading end of the rolled recording paper (RP) is discharged from the discharge port 17. In this state, manually operate the head release lever 21 again to release the thermal head 3.
By bringing the platen 4 into contact with the platen 4, thermal transfer recording onto a roll of recording paper (RP) becomes possible.

FIGS. 6 and 7 respectively show the process and state of mounting the folded recording paper (FP). The ink sheet roll 1, the ink sheet 1a, and the take-up roll 8 are installed in exactly the same manner as in the case of the roll-shaped recording paper (RP) described above.

When folded recording paper (FP) is used, a second guide shaft 81 is pressed and held between third left and right reel plates 60 and 61 instead of rolled recording paper (RP). This second guide shaft 81 has a cylindrical shape.

The folded recording paper (FP) is guided into the housing 30 by a guide plate 70 attached to the upper rear part of the housing 30.

The guide plate 70 includes a main plate 71 and a holding plate 72.
It consists of The main plate 71 has a side plate 73 whose both sides are bent. One end of the side plate 73 protrudes from the front end of the main plate 71 and the tip is suspended downward, forming an L-shaped arm 7.
4. Furthermore, a hook portion 75 is formed at the tip of the arm 74. The presser plate 72 has protrusions 76 at both rear ends rotatably engaged with step-shaped notches 77 provided in the side plate 73, and locking portions 78 are provided at both rear ends. By coming into contact with this, the clockwise movement of the presser plate 72 is restricted, and the presser plate 72 can be maintained in an upright position.
Then, in the guide plate 70, with the main plate 71 in an upright position, the hook portion 75 at the tip of the L-shaped arm 74 is brought into contact with the shaft 35 exposed from the opening 30a, and the main plate 71 is rotated clockwise in this state. By moving in the direction, the main plate 7 is attached to the top surface of the housing 30.
It is set with 1 placed on it.

Then, with the presser plate 72 upright, the folded recording paper (FP) is inserted into the main plate 7 from the rear of the housing 30.
1 and the press plate 72, and then press the press plate 7.
2 in the counterclockwise direction, the folded recording paper (FP) is prevented from being skewed by the side plates 73, and is guided forward by the presser plate 72 without being curved upward.

Folding paper (FP) guided in this way
is inserted through the insertion port 16 via the second guide shaft 81 and the guide roll 15, passes through the space between the thermal head 3 and the platen 4, and is discharged from the discharge port 17. In addition, such folding recording paper (FP)
When installing the thermal head 3, the thermal head 3 and the platen 4 are once separated by operating the head release lever 21, as in the case where the roll-shaped recording paper (RP) described above is set.

Next, the first guide shaft 80 is mounted with the protrusions 80a at both ends placed on the notches 60a, 61a provided at the upper rear portions of the third left and right reel plates 60, 61. The first guide shaft 80 is made of plastic, for example.

By these first and second guide shafts 80 and 81, the folding recording paper (FP) is moved to the guide plate 70.
The folded recording paper (FP)
compared to the case without the first guide shaft 80, both ends thereof are guided over a longer distance by the third left and right reel plates 60, 61, and both ends are reliably connected to the third left and right reel plates 60, 61. The folding recording paper (FP) is guided by the
By being bent in different directions by the second guide shafts 80 and 81, the apparent rigidity is increased and skewing is prevented.

(f) Effects of the invention According to the invention, when continuous recording paper is used, the pair of reel plates that hold the recording paper also serve as transport guides at both ends of the recording paper when roll-shaped recording paper is used. By using this, it is possible to guide both ends of the continuous recording paper without specifically providing conveyance guides for both ends of the continuous recording paper.

Further, in the above-mentioned guiding operation, by providing the first guide shaft and the second guide shaft, the length of the continuous recording paper guided by the reel plate becomes longer, and the continuous recording paper can be reliably guided. Furthermore,
The continuous recording paper is curved, apparently increasing its rigidity. Therefore, the continuous recording paper can be transported normally without being skewed.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIGS. 1, 2 and 6 are perspective views showing different states, FIGS. 3 and 7 are side sectional views showing different states, and FIGS. 4 and 6 are perspective views showing different states. Figure 5 is a sectional view of the main part. 3... Thermal head, 4... Platen, 21
...Head release lever, 60, 61...3rd
Left and right reel plate, 70... Guide plate, 80... 1st
Guide shaft, 81...second guide shaft.

Claims (1)

[Scope of utility model registration request] It has a housing, a pair of reel plates disposed within the housing, a platen, and a recording head facing the platen, and records paper that is unwound from a roll of recording paper held between the reel plates. The recording device records on recording paper by supplying continuous recording paper between the opposed platen and the recording head, the recording device further comprising a continuous recording paper formed in the casing for supplying the continuous recording paper into the casing. a first guide shaft that is detachably mounted on the upper part of the reel plate, and a second guide shaft that is mounted between the reel plates in place of the rolled recording paper; By bringing the supplied continuous recording paper into contact with the lower circumferential surface of the first guide shaft and then with the upper circumferential surface of the second guide shaft, the continuous recording paper is 1. A recording apparatus characterized in that the recording paper is supplied between opposing sides of the platen and the recording head while regulating both ends of the recording paper, and recording is performed on continuous recording paper.